Moving Beyond the Authority of the Doctor: Highlighting the Importance of Patient Input in Diagnosis

A comprehensive study highlights the importance of assessing patient experience with medical diagnosis, especially in complex diseases such as neuropsychiatric lupus. This suggests a shift to a more collaborative approach between patients and clinicians to improve diagnostic accuracy and patient satisfaction.

Research highlights the need to incorporate patients’ lived experiences into medical diagnosis and advocates for a more collaborative relationship between patients and clinicians to enhance diagnosis. Accuracy and patient satisfaction.

Experts today called for more value to be given to patients’ “lived experiences” after a study of more than 1,000 patients and clinicians found multiple instances of patient underreporting. There is.

The study, led by a team from the University of Cambridge and King’s College London, found that clinicians ranked patients’ self-assessment as the least important in making diagnostic decisions, and patients were more likely to overestimate or underestimate their symptoms. It was found that patients were evaluated more frequently than patients reported doing so.

One patient shared a common sentiment that disbelief is “degrading and dehumanizing,” adding: As if I don’t have authority over it and what I’m feeling isn’t valid, in which case it’s a very dangerous environment…When I tell them the symptoms, they think the symptoms are I would say wrong, otherwise I could not feel the pain there or in that way. ”

Diagnostic issues of neuropsychiatric lupus

In a study published today (December 18th), RheumatologyUsing the example of lupus neuropsychiatric, an incurable autoimmune disease that is particularly difficult to diagnose, researchers examined the different values ​​clinicians place on 13 different types of evidence used in diagnosis. . This includes evidence such as brain scans, patient views, and observations of family and friends.

Less than 4% of clinicians ranked patient self-assessment among the top three types of evidence. Clinicians ranked themselves among the highest despite admitting that they often lack confidence in diagnoses that involve less visible symptoms such as headaches, hallucinations, and depression. It has been reported that such “neuropsychiatric” symptoms can lead to poor quality of life and early death, and are more often misdiagnosed and therefore not treated correctly than more visible symptoms such as rashes. It has been.

Aiming for a collaborative relationship between patients and clinicians

Sue Farrington, co-chair of the Rare Autoimmune Rheumatic Diseases Alliance, said: “We are moving away from the paternalistic and often dangerous ‘doctor knows best’ mentality and towards patients with lived experience. “The time has come for experienced physicians to move towards a more equal relationship.” The learned experience works more collaboratively. ”

Almost half (46%) of the 676 patients reported never or rarely being asked about their self-assessment of their illness, while others were very positive. I talked about my experiences. Some clinicians, particularly psychiatrists and nurses, value patient views, with a Welsh psychiatrist explaining: “Patients often arrive at the clinic having undergone multiple evaluations, researched their condition to a very high level, and worked hard to understand what’s going on with their body. …They are often expert diagnosticians in their own right.”

Lead author Dr Melanie Sloan, from the University of Cambridge’s School of Public Health and Primary Care, said: After all, these are people who know what it’s like to live with their condition. However, we also need to ensure that clinicians have time to fully investigate each patient’s symptoms, which is difficult within the constraints of our current healthcare system. ”

Gender and ethnicity in diagnosis

It was felt that the personal characteristics of patients and clinicians, such as ethnicity and gender, could influence the diagnosis, and there was a recognition that women in particular were more likely to be told that their symptoms were psychosomatic. The data showed that male clinicians were statistically more likely to state that patients were exaggerating their symptoms. Patients were more likely than clinicians to say that their symptoms were directly caused by the disease.

Conclusion: Emphasize patient contribution in diagnosis

While the study authors acknowledge that patients’ reasoning is sometimes inaccurate, there are many potential benefits to incorporating patients’ “attributional insights” and experiences into decision-making (diagnostic accuracy, They concluded that there is a high likelihood that this will result in a reduction in misdiagnosis, an increase in patient satisfaction, etc. diagnosis. This comes at a time when it is widely known that diagnostic tests for neuropsychiatric lupus erythematosus, like many other autoimmune diseases and long-term COVID-19 infections, are “not enlightening,” according to one neurologist. Especially important.

Lead study author Dr Tom Pollack, from the Institute of Psychiatry, Psychology and Neuroscience at King’s College London, said: mistaken. However, especially when diagnostic tests are not advanced enough to consistently detect these diseases, evaluating both perspectives in combination can reduce misdiagnosis, improve clinician-patient relationships, and improve symptom reporting. There could be more trust and openness. ”

Reference: “Attribution of neuropsychiatric symptoms and prioritization of evidence in the diagnosis of neuropsychiatric lupus: A mixed methods analysis of patient and clinician perspectives from the international INSPIRE study” Melanie Sloan, Laura Andreoli, Michael S. Zandi, Rupert Harwood, Melvi Pitkanen, Sloan by Sam, Colette Barea, Eftalia Massu, Chris Whincup, Michael Bosley, Felix Norton, Mandeep Ubi, David Jayne, Guy Leszziner, James Brimicombe, Wendy Dement, Kate Middleton, Caroline Gordon, David D’Cruz, Thomas A. Pollack, December 18, 2023, Rheumatology.
DOI: 10.1093/Rheumatology/kead685

This research was funded by The Lupus Trust and LUPUS UK.

Source: scitechdaily.com

ServiceNow to further explore task mining through recent acquisition

ServiceNow announced this morning It is said that it is acquiring a Czech task mining company. Ultimate Suite This gives companies new ways to see and understand the flow of work in their business. The companies haven’t disclosed the price, but the three-year-old startup has raised 768,000 euros (about $839,000), so it’s probably not that big of a deal.

Task mining is part of process mining, a growing global market that helps companies understand the flow of work within an organization, look for bottlenecks, and increase efficiency. please consider that selonis, one of the leading startups in this space, has raised $2.4 billion and is valued at $13 billion as of October 2022. Ultimate Suite is substantially smaller, having raised less than $1 million, but it provides another tool to ServiceNow’s task mining arsenal, says Eduardo, ServiceNow’s vice president and general manager of process mining. His manager is Mr. Chiocconi.

Before acquiring Ultimate Suite, the company had the ability to drill down into workflows, but not down to the user task level. “And when we investigated and discovered where certain inefficiencies were, we lacked the ability to inspect or understand what individual users were doing. , that’s exactly what Ultimate Suite Task Mining is here to help us with,” Chiocconi told his TechCrunch.

He says the goal is actually to build more efficient business processes, and the addition of Ultimate Suite gives them more capabilities to do that. “Insights without action are of little value, so once we find out exactly what needs to be fixed, we also have the ability to automate some of the inefficiencies for end-to-end efficiency.” The idea is to offer it on the same platform. Finish the business process.”

The plan is to integrate Ultimate Suite’s functionality with ServiceNow’s process mining capabilities. “If you look at how ServiceNow has made acquisitions in the past, we pride ourselves on organically building these capabilities into our integrated platform,” Chiocconi said. This means that it will no longer be sold as a separate product. “Our overall objective is to re-platform all of this IP and create more value for our customers by learning how it can be derived from Ultimate Suite and surface as an organic extension of process mining. to bring about.”

This is ServiceNow’s third acquisition related to AI and automation in the past few years. Get AI-powered workflow tools G2K in May This year, and at the end of 2020, Canadian startup Element AI joined us.

Source: techcrunch.com

Dragonfly: NASA’s Drone Mission Set for 2028

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Dragonfly Mission

An artist’s impression of a dragonfly flying over the dunes of Saturn’s moon Titan. NASA has cleared the mission team to proceed with development for a July 2028 launch.Credit: NASA/Johns Hopkins APL/Steve Gribben

The Dragonfly mission is moving toward building nuclear-powered drones. SaturnThe satellite Titan is aiming to be launched in 2028. The mission, which will involve extensive collaboration and technological advances, aims to investigate Titan’s organic matter and its potential links to life.

NASA’s Dragonfly mission team is moving forward with the next stage of development of an innovative car-sized nuclear-powered drone that plans to fly and land over the organic-rich sands of Saturn’s large moon Titan.

NASA has cleared Dragonfly to proceed with design and manufacturing work on its final mission, known as Phase C. The launch preparation date was revised to July 2028.

Artist’s impression of a dragonfly on the surface of Titan. Credit: NASA/Johns Hopkins APL

Overcome challenges and prepare for Titan: “The Dragonfly team successfully overcame many technical and programmatic challenges in this bold attempt to collect new science on Titan,” said Nicola Fox, associate administrator for NASA’s Science Mission Directorate in Washington.

Dragonfly, NASA’s only mission to the surface of another oceanic world, is designed to probe the complex chemistry that is the precursor to life. It will be equipped with cameras, sensors and samplers to survey the area. The water froze on the surface of the ice.

Artist’s impression of a dragonfly flying over Titan. Credit: Johns Hopkins University/APL

Teamwork and technical milestones: “Dragonfly is a very bold experiment that has never been done before,” said Elizabeth “Zibi” Turtle, Dragonfly principal investigator at APL.

Saturn’s largest satellite that will collect data in 2028. Credit: Johns Hopkins Applied Physics Laboratory

Collaborative initiatives and future expectations: “The dedication of the Dragonfly team was nothing short of heroic,” said Bobby Brown, APL Director of Space Exploration.

APL manages NASA’s Dragonfly mission. The team includes key partners from NASA’s Goddard Space Flight Center in Greenbelt, Maryland; Lockheed Martin Space in Littleton, Colorado; Sikorsky, Lockheed Martin Corporation. NASA’s Ames Research Center in Silicon Valley, California. NASA’s Langley Research Center in Hampton, Virginia. Pennsylvania State University in State College, Pennsylvania. Marine Space Science Systems (San Diego, California); Honeybee Robotics, Pasadena, California; NASA’s Jet Propulsion Laboratory in Southern California. French Space Agency (CNES) in Paris. German Aerospace Center (DLR) in Cologne, Germany. and Japan Aerospace Exploration Agency (JAXA) in Tokyo.



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Source: scitechdaily.com

European Regulatory Challenges Lead to Cancelation of $20 Billion Adobe and Figma Acquisition Plan

Adobe finally makes a huge $20 billion bid to acquire rival Figma officially deadThis comes after the companies announced today that their acquisition plans had been scrapped due to regulatory pushback in Europe.

The deal, first announced last September, has always attracted regulatory scrutiny due to its size and the fact that it removed one of Adobe’s major rivals from the shadows. Ta. The U.S. Department of Justice (DoJ) Take a closer look at the transaction For the most part in 2023, news has not yet been filed to prevent the deal from happening. Appeared Before the weekend, Adobe and Figma had met with the Department of Justice in a last-ditch effort to avoid legal action.

Regardless, both companies were already facing significant headwinds in Europe. In late November, the UK announced that the proposed acquisitionharm innovation”, following similar findings in the European Union (EU), which announced a similar course of action in August.

The core of the concern is that Figma is the “clear market leader” in interactive product design tools and acts as a “constraining influence” on Adobe in the digital asset creation tools space. was. Therefore, if Adobe acquires Figma, Figma is a “valid competitor.”

in Today’s blog postFigma CEO and co-founder Dylan Field said the “co-decision” was reached because the two companies were unable to convince regulators of the differences between their products and businesses.

“This is not the outcome we were hoping for, despite spending thousands of hours with regulators around the world detailing the differences between our business, our products, and the markets we serve. We no longer see a path forward for regulatory approval of this transaction,” Field said.

This is a developing story.Please update the latest information.

Source: techcrunch.com

IBM’s $2.3 billion acquisition of StreamSets and WebMethods from Software AG

IBM is distributing two data integration assets from Germany-based enterprise software company Software AG for 2.13 billion euros ($2.3 billion).

The all-cash transaction will see IBM take ownership. stream set Data integration platform acquired by Software AG just last year and WebMethods, acquired by Software AG for more than $500 million back in 2007.

It’s worth noting that Software AG itself was acquired by Silver Lake earlier this year, obtaining majority ownership of 63% before raising the investment amount to $2.4 billion, 85% or more during September. Silver Lake today just bought it. It owns 93% of Software AG, which will soon be delisted from the public market.

integrated

For IBM, the purchase of Software AG’s Integration Platform-as-a-Service (IPAAS) toolset fits into a broader commitment to hybrid cloud that the company has strengthened over the years with a series of major acquisitions. Includes the company’s $34 acquisition in 2018 of Red Hat for $1 billion and most recently its $4.6 billion acquisition of Apptio in June.

Although cloud computing offers many benefits to enterprises, vendor lock-in and aversion to a single cloud environment are increasing, leading to a more hybrid approach, one that relies on local on-premises infrastructure for security and low-latency purposes. A potentially dependent approach is required. Leverage one or more public cloud providers for specific resources as needed.

However, this means you need to manage and process data that may be stored in a variety of applications, both on-premises and across multiple private or public clouds. And this is where data integration systems come in, allowing companies to build pipelines that can pool data regardless of its location or format.

And this is effectively what IBM is buying with StreamSets and WebMethods: technology that spans the various layers that make up application and data integration, including API management, which WebMethods specifically provides.

Data is also the foundation of AI, and like almost every business today, IBM has been upping its AI game lately. In fact, this year the company introduced a new data science platform called Watsonx. It provides tools to build and deploy AI and manage all your data sources in one platform. And this is where IBM’s two acquisitions will come into play.

“Together with IBM’s Watsonx AI and data platform and its application modernization, data fabric, and IT automation products, StreamSets and webMethods help clients realize the full potential of their applications and data.” IBM said. Rob Thomas, Senior Vice President and Chief Commercial Officer of Software, said in a press release.

Source: techcrunch.com

Verdane invests $65 million in media monitoring startup Meltwater

melt waterwhich first made its name in media monitoring and has since become active in business intelligence using AI and big data analysis techniques, is welcoming new investors. VardhanThe Norwegian private equity firm, which earlier this year closed a more than $1 billion fund to invest in the expansion of high-tech companies, acquired an 11% stake in Meltwater, valuing the company at €542 million. 92 million dollars), with a stock value of approximately 542 million euros (approximately 592 million dollars). $65 million. But that’s not the only sticking point in the deal.

The investment will be made through Verdan, which will acquire a significant stake in Fountain Venture, an investment vehicle controlled by Meltwater’s founder and current chairman, Jørn Risegen.

Meltwater was listed on the Norwegian Stock Exchange until early this year.Mr. Risegen oversaw the company’s taking private. early this year The remaining stake was held through Fountain in a deal with two private equity firms, Alter and Merlin. (This go-private deal was the last disclosed valuation and the one currently cited by Meltwater.) Verdhan invested in Fountain Venture rather than directly in Meltwater. This is because, in partnership with Fountain, we plan to jointly invest in startups active in the following areas in the future. love.

Joakim Kaempferd, president of Verdun, said the partnership will also allow the company to acquire a stake in HR firm Jobilon, but Meltwater has much larger assets.

“The trade here is really a portfolio trade,” he said. “We have acquired Mr Jorn’s investment company and have an implied direct stake in Meltwater and Nordic recruitment company Jovilon, with Meltwater being the largest asset in our portfolio.” Jovilon’s current ARR is approx. 5 million euros, but Meltwater, which was founded in Norway but is now headquartered in San Francisco, has an ARR of about 500 million euros, he added.

The deal highlights several important themes in Europe’s technology industry and the world of venture capital.

The first is the fact that tech companies continue to put significant pressure on their valuations. Meltwater’s current market cap is just under $600 million, which is actually less than the funding the company raised over the years (more than $700 million) when it was a private startup. pitch book data), and less than half of its valuation when it went public in December 2020 at more than $1 billion.

The second is the nature of the trade at the moment and the efforts investors are making to avoid risk. The European market is particularly tight at the moment. Venture capital firm Atomico conducts deep research into Europe’s funding landscape each year (along with a number of third-party research firms and other companies participating in the ecosystem), and estimates that funding will be halved in 2023. It turned out that That has fallen to just $43 billion, with private equity firms participating more heavily in deals to make up for the decline from VCs.

In this context, it is noteworthy that Verdane chose to invest in Fountain Venture rather than directly in Meltwater. This would give Verdan a stake in Meltwater, as well as Jovilon and any other stake that Fountain and Lysegen might be interested in. Then you lose the leverage of focusing on just one business. Verdane itself has only recently begun spreading its wings into investing in startups across Europe and beyond. Partnering with a partner to help lead the way is a much lower-risk approach to more ambitious initiatives.

From a technology perspective, companies like Meltwater are at a crossroads these days. The company’s roots lie in humans physically sifting through stacks of newspapers every day, cutting out the parts that mention company names, collating them, and sending them to their customers so they can better track their status. It probably came from business. It was featured in the media.

The decline of print media digitized that effort, but then the rise of social media turned it into a broader game, sentiment analysis, where words became structured and usually unstructured data. Ta. The influx of a whole new set of tools to glean insights from data has turned a media challenge into a technical challenge. Meltwater built his AI in-house and acquired a series of companies in his analytics integration efforts. (The most high-profile of these acquisitions was undoubtedly DataSift, a groundbreaking company that was an early Twitter friend of his and used to monetize Twitter’s firehose.) has worsened.)

But now it has a much bigger competitive threat. Companies like OpenAI and generative AI innovations will once again change the game from a search (consumer and business) perspective and how all kinds of business intelligence work is performed.

Unsurprisingly, Lyseggen said Meltwater’s focus feels like a throwback to what is essentially a solved problem, although it could well be made more efficient by competitors. Despite this, we believe there are further opportunities for our company.

“I see OpenAI’s ChatGPT as the ‘Netscape moment’ that ushered in this new era,” he said. This is interesting. Although Netscape isn’t part of what we use today, it certainly changed the way the world searches for information. “AI is changing the game as players challenge the old guard. We think Meltwater’s tech stocks are already the most modern and AI-centric of its category. We’re going to continue to do that and we’re really looking forward to it. We’re working very hard.” Meltwater today announced that it produces approximately 1 billion daily transactions for its communications, marketing and PR clients. announced that they were analyzing the document.

Source: techcrunch.com

Fra Mauro: Transforming Cartography into a Science with the Epic Medieval Map

Fra Mauro’s beautiful and intricate world map

History_docu_photo/Alamy

When I was in Venice a few years ago, I visited the Corer Museum to absorb the history of the city. Located in St. Mark’s Square, this museum features imposing statues and paintings of naval battles and ancient weapons. However, as I passed the last exhibition room, another artifact caught my eye, hanging alone in an alcove. It was a map of the world, or “mappa mundi” in Latin, and it was unlike any other map I had ever come across.

The world depicted here in an 8-foot-diameter gold frame is a combination of lapping blue ocean and off-white land, all covered in handwritten notes. It was one of the most beautiful, beautifully intricate things I’ve ever seen.

Created 550 years ago by a monk called Fra Mauro, the map was largely ignored for centuries, but it shows a level of accuracy not present in previous maps. Considering this, it is a deplorable situation. If you turn it upside down, you can recognize it as a map of Africa and Eurasia, with Mauro placed south at the top.

After visiting Venice, I decided to find out more about this map. This project culminated in my book. The dark sea begins here. I spent over a year researching his literature on world maps, poring over Mauro’s creations, and trying to understand what he was trying to say. It turned out to be part of the inflection point from the Middle Ages to the Renaissance.

Source: www.newscientist.com

May Mobility’s autonomous microtransit may be more profitable than robotaxis

Self-driving car company May Mobility has partnered with transportation technology company Via to launch the first self-driving on-demand microtransit service on public roads in Sun City, Arizona. This milestone is in line with May Mobility’s goal to begin passenger-only operations by 2023. It also suggests that a gradual approach to commercializing autonomous driving could work well for startups.

Sun City is a planned community for “active retired adults.” Launching an unmanned microtransit service in this environment isn’t as flashy as putting robotaxis on the streets of San Francisco or autonomous transportation at Phoenix’s airport. However, thanks to this, the company expanded smoothly and avoided getting into trouble.

May’s strategy of partnering with cities to integrate autonomous microtransit services into existing public transportation also laid the groundwork for more challenging deployments in the future. Carlos Cruz Casas, chief innovation officer for the Miami-Dade County Department of Public Works, told TechCrunch that May Mobility, also in partnership with Via, will launch an on-demand shuttle service in Miami. Neither May Mobility nor Via responded to TechCrunch for confirmation.

Rival Cruise Corp. launched an unmanned robotaxi fleet in Miami before towing its entire fleet after a pedestrian was hit and dragged by one of its General Motors-backed vehicles in October. Remember, we started testing in just one day. Cruise subsequently had its license to operate in California suspended and last week laid off 900 employees and several executives.

By keeping its head down and deploying small, May has so far been able to expand without major disruption. The company operates shuttles to designated stops on campus and along fixed routes in Ann Arbor, Michigan, and Arlington, Texas. Most recently, May partnered with Via to launch an on-demand service in Grand Rapids, Michigan. A Grand Rapids customer can summon his one of May’s Toyota Sienna Autono-MaaS AVs from within a designated geofenced area.

Steve Miller, a risk management consultant specializing in self-driving cars at the U.S. Insurance Bureau, told TechCrunch that more controlled, low-speed shuttles and on-demand services like those offered by May and competitor Veep are on the horizon. He said he expected that. Beep operates self-driving shuttles to provide transportation for residents of the Lake Nona community in Florida and public transportation in Peachtree Corners, Georgia. Beep also provides transportation for guests at Disney’s Celebration Resort and Wilderness Lodge Resort.

“What we’re seeing as we’re talking about commercial deployment is that the industry is really focused on trucking and shuttle transportation, like Veep and May Mobility-type shuttles.” said Miller, noting that the development of Level 2 advanced driver assistance software for OEMs is important. It’s also trending in AV startups. “And the reason these two are in the lead is because they both have the advantage of being in a defined operational domain. They’re in a controlled environment. That’s what makes robotaxis difficult. The problem is that there are many edge cases that cannot be modeled at this time.”

Meanwhile, May said the company’s multi-policy decision-making system is well-equipped to deal with edge cases. According to the company, the system “runs real-time onboard simulations to analyze thousands of possible scenarios every second and select and execute the safest scenario.”

Miller also said that today’s funding environment encourages companies to focus on sustainability around their core business rather than achieving moonshot goals. In November, May raised $105 million, bringing its total funding up to $300 million.

“With so many cities and municipalities in the U.S. and so many transportation subsidies, we’re going to see more shuttle-type operations,” Miller said. “So I think we’re going to see interest from cities, airports, transportation hubs. There’s a lot of opportunity to connect to mass transit, and I think that’s pretty lucrative.”

Suncity unmanned operation begins

May Mobility’s first passenger-only service in Sun City will request a “select group of initial passengers” to be picked up or dropped off in one of the company’s Autono-MaaS minivans from various stops, according to the company. It is said to give an opportunity.

The free service will initially operate on public roads from 4pm to 6pm, Monday to Friday. A company spokesperson said expansion was imminent but depended on May’s careful and thoughtful approach to safety, passenger feedback and community trust.

Passengers can book on-demand rides through May Mobility’s app, available on Google Play and the Apple App Store. Residents interested in becoming early riders can apply online.

Source: techcrunch.com

Can animals dream? And if they do, what do they think about?

One day in the fall of 2020, Daniella Ressler I drove home with a car full of jumping spiders. Her lab was closed due to COVID-19 restrictions, so Rosler had no choice but to take the specimens home after spending the day corralling them in a dry field. That night, when she happened to check on them, the spiders hanging and not moving “I’ve never seen this before,” says Rosler, a behavioral ecologist at the University of Konstanz in Germany. She immediately returned to the scene with her colleagues. “We started photographing them just out of curiosity,” she says.

They observed the same behavior, but only at night. Even stranger, a few months later, close monitoring of the lab using a night vision camera revealed that there wasn’t just a spider present. He was twitching slightly, but his eyes were moving.. This is similar to what happens when humans dream, and creates an irresistible expectation that spiders are dreaming too.

Jumping spiders aren’t the only non-human animal in which evidence of dream states has recently been discovered. Signs of dreams, and even nightmares, can be found in every species of the animal kingdom, from pigeons to octopuses. “Once you understand the functions involved in dreaming, it makes perfect sense that animals dream,” Ressler says. But still, questions remain. Do other animals dream like us, and if so, what are they dreaming about? This is not easy to understand, but it is worth doing, as it may help us understand the purpose of human dreams.

Source: www.newscientist.com

Spiral Galaxies Emitting “Forbidden” Emissions

This image from the Hubble Space Telescope shows MCG-01-24-014. It is a spiral galaxy with an active galactic nucleus located 275 million light-years away and is classified as a Type 2 Seyfert galaxy. Seyfert galaxies are often closer to Earth than quasars and are distinguished by their unique spectra, especially the “forbidden” emission of type 2 Seyferts.Credit: ESA/Hubble & NASA, C. Kilpatrick

this swirl hubble space telescope This image shows a bright spiral galaxy known as MCG-01-24-014, located about 275 million light-years from Earth. MCG-01-24-014 is called an active galaxy because, in addition to being a well-defined spiral galaxy, it has a very energetic core known as an active galactic nucleus (AGN) .

More specifically, it is classified as a Type 2 Seyfert galaxy. Seyfert galaxies are home to one of the most common subclasses of AGNs, along with quasars. The exact classification of AGNs is nuanced, but Seyfert galaxies tend to be relatively nearby where the host galaxy can be clearly detected alongside the central AGN, whereas quasars are always very distant AGNs and their Its incredible brightness exceeds that of its host galaxy.

Understanding Seyfert galaxies and their spectra

Both Seyfert galaxies and quasars have further subclasses. For Seyfert galaxies, the main subcategories are type 1 and type 2. They are distinguished from each other by their spectra (the pattern created when light is split into its constituent wavelengths). The spectral lines emitted by Type 2 Seyfert galaxies are particularly associated with certain so-called “forbidden” emissions.

To understand why synchrotron radiation from galaxies is thought to be forbidden, it helps to understand why the spectrum exists in the first place. Spectra look the way they do because certain atoms and molecules absorb and emit light very reliably at very specific wavelengths.

The reason is quantum physics. Electrons (tiny particles orbiting the nucleus of atoms and molecules) can only exist at very specific energies, so electrons can only lose or gain very specific amounts of energy. These very specific amounts of energy correspond to specific wavelengths of light that are absorbed or emitted.

Discharge prohibition phenomenon

Forbidden emission lines are therefore spectral emission lines that should not exist according to certain rules of quantum physics. However, quantum physics is complex, and some of the rules used to predict quantum physics use assumptions that are appropriate for laboratory conditions on Earth.

Under these rules, this release is “prohibited” and ignored because it is unlikely. But in space, in the midst of incredibly energetic galactic nuclei, those assumptions no longer apply, and “forbidden” light has a chance to shine towards us.

Source: scitechdaily.com

Tamara, a BNPL platform and shopping giant in Saudi Arabia, achieves $1 billion valuation following $340 million Series C funding round

Tamara, the buy-now-pay-later platform for consumers in Saudi Arabia and the Gulf Cooperation Council region, has recently completed a C round of funding that raised $340 million. This recent funding brings the company’s valuation to $1 billion, making it the first fintech unicorn startup in the region. SNB Capital and Sanabil Investments led the Series C round, alongside other backers such as Shorooq Partners, Pinnacle Capital, and Impulse. This round includes primary capital and some secondary equity transactions, marking one of the largest investments in fintech in the region. Tamara has raised a total of $500 million in equity funding, including secondaries, and over $400 million in debt funding.

Established in 2020, Tamara has quickly gained traction and currently boasts over 10 million users in Saudi Arabia, UAE, and Kuwait. The platform allows consumers to shop, pay in installments, and make bank transfers, and it has partnered with 30,000 merchants, including popular names like SHEIN, IKEA, Jarir, Noon, eXtra, and Farfetch.

The rise in popularity of buy-now-pay-later services in Saudi Arabia has seen significant growth, driven by the booming e-commerce market. According to a report from last year, the number of registered customers for BNPL services increased from 76,000 in 2020 to 3 million in 2021 and 10 million in 2022. With Saudi Arabia’s huge potential for digital payments, the market is expected to grow significantly in the next few years.

CEO Alsukhan emphasized the importance of building a customer-centric payment solution and the platform’s commitment to Shariah compliance. Tamara prides itself on offering a friendly and transparent service, focusing on avoiding unnecessary fees and helping customers make timely payments by offering risk management tools and options based on their financial capabilities.

Tamara’s long-term vision includes expanding its revenue sources and introducing new products and services beyond buy-now-pay-later. The platform plans to strengthen its integration into the shopping journey, introduce a buyer protection program, and enhance its card functionality for in-store transactions.

The recent funding not only represents a significant milestone for Tamara but also signals the region’s growing potential in the fintech industry. As the first homegrown unicorn in the Gulf, the company’s success reflects the supportive ecosystem, financial backing from local and international investors, and a strategic focus on customer satisfaction and compliance.

Source: techcrunch.com

Discovery of a direct correlation between elevated insulin levels and pancreatic cancer by scientists

A new study has proven a direct link between high insulin levels and increased risk of pancreatic cancer in people with obesity and type 2 diabetes. This landmark study shows how excess insulin overstimulates pancreatic acinar cells, leading to inflammation and precancerous cells, particularly in the case of pancreatic ductal adenocarcinoma (PDAC). These findings highlight the importance of maintaining healthy insulin levels and may lead to new strategies for cancer prevention and treatment, including lifestyle interventions and targeted therapies.

For the first time, we explain in detail why people with obesity and type 2 diabetes have an increased risk of pancreatic cancer.

A recent study conducted by scientists at the University of British Columbia’s Faculty of Medicine revealed a direct relationship between high blood pressure and high blood pressure. insulin This level is frequently observed in patients with obesity, type 2 diabetes, and pancreatic cancer.

This study cell metabolismprovides the first detailed explanation of why people with obesity and type 2 diabetes are at increased risk of pancreatic cancer. This study shows that excessive insulin levels overstimulate pancreatic acinar cells, which produce digestive juices. This excessive stimulation causes inflammation and transforms these cells into precancerous cells.

“In addition to rapid increases in both obesity and type 2 diabetes, we are also seeing an alarming increase in the incidence of pancreatic cancer,” said co-senior author and professor in the Department of Cellular Physiology Sciences and co-senior author of the study. said Dr. James Johnson, interim director of the agency. UBC’s Institute of Life Sciences. “These findings help us understand how this is happening and highlight the importance of keeping insulin levels within a healthy range. can be achieved through medication.”

Dr. James Johnson is a professor in the Department of Cellular and Physiological Sciences and interim director of the UBC Life Sciences Institute. credit:
UBC Faculty of Medicine

The study focused on pancreatic ductal adenocarcinoma (PDAC), the most common type of pancreatic cancer and a highly aggressive disease with a five-year survival rate of less than 10 percent. The incidence of pancreatic cancer is on the rise. By 2030, PDAC is expected to become the second leading cause of cancer-related deaths.

Role of insulin in pancreatic cancer

Although obesity and type 2 diabetes were previously established as risk factors for pancreatic cancer, the exact mechanisms by which this occurs remained unclear. This new study sheds light on the role of insulin and its receptor in this process.

… (content continues) …

Reference: “Hyperinsulinemia causes pancreatic cancer through acinar insulin receptors by increasing digestive enzyme production and inflammation” (Anni MY Zhang, Yi Han Xia, Jeffrey SH Lin, Ken H Chu, Wei Chuan K. Wang, Titine JJ Ruiter, Jenny) CC Yang, Nan Chen, Justin Choa, Shilpa Patil, Haoning Howard Sen, Elizabeth J. Rideout, Vincent R. Richard, David・F. Shafer, Rene P. Zahedi, Christoph H. Borchers, James D. Johnson, Janelle L. Kopp, October 31, 2023. cell metabolism.
DOI: 10.1016/j.cmet.2023.10.003

This study was funded by the Canadian Institutes of Health Research and the Lustgarten Foundation.

Source: scitechdaily.com

Webb finds small, free-floating brown dwarf in star-forming cluster IC 348

The newly discovered brown dwarf is estimated to have a mass three to four times that of Jupiter, making it a strong candidate for the lowest mass free-floating brown dwarf ever directly imaged.

This image from Webb’s NIRCam instrument shows the central portion of star cluster IC 348. Image credits: NASA / ESA / CSA / STScI / K. Luhman, Pennsylvania State University / C. Alves de Oliveira, ESA.

Brown dwarfs are cold, dark objects that are between the size of gas giant planets and Sun-like stars.

These objects, also known as failed stars, have star-like properties even though they are too small to sustain hydrogen fusion reactions in their cores.

Typically, their masses are between 11 and 16 Jupiter (the approximate mass that can sustain deuterium fusion) and 75 and 80 Jupiter (the approximate mass that can sustain hydrogen fusion).

“One of the basic questions you’ll find in any astronomy textbook is: What is the smallest star? That’s what we’re trying to answer,” said Kevin, an astronomer at Penn State University.・Dr. Luman said.

The newly discovered brown dwarf resides in IC 348, a star cluster 1,000 light-years away in the constellation Perseus.

The cluster, also known as Collinder 41, Gingrich 1, and Theia 17, contains nearly 400 stars and is about 5 million years old.

IC 348 is part of the larger Perseus star-forming region, and although it is normally invisible to the naked eye, it shines brightly when viewed at infrared wavelengths.

Dr. Luhmann and his colleagues used the following method to image the center of the star cluster. Webb’s NIRCam device Identify brown dwarf candidates based on their brightness and color.

They followed up on the most promising targets using: Webb’s NIRSpec microshutter array.

This process created three interesting targets with masses between three and eight Jupiters and surface temperatures between 830 and 1,500 degrees Celsius.

Computer models suggest that the smallest of these weighs just three to four times as much as Jupiter.

ESA astronomer Dr Catalina Alves de Oliveira said: “With current models, it is very easy to create a giant planet in a disk around a star.”

“But in this cluster, the object is unlikely to form as a disc, but instead as a star, with three Jupiters having a mass 300 times less than the Sun.”

“Then we have to ask how the star formation process takes place at such a very small mass.”

Two of the brown dwarfs identified by the research team exhibit spectral signatures of unidentified hydrocarbons, molecules that contain both hydrogen and carbon atoms.

The same infrared signature was detected in the atmospheres of Saturn and its moon Titan by NASA’s Cassini mission.

It has also been observed in the interstellar medium, the gas between stars.

“This is the first time this molecule has been detected in the atmosphere of an object outside our solar system,” Dr de Oliveira said.

“Models for brown dwarf atmospheres do not predict their existence. We are observing objects that are younger and have lower masses than ever before, and we are seeing something new and unexpected.” .”

a paper Regarding the survey results, astronomy magazine.

_____

KL Luman other. 2023. JWST survey of planetary mass brown dwarfs in IC 348. A.J. 167, 19; doi: 10.3847/1538-3881/ad00b7

Source: www.sci.news

Artificial Intelligence will bring about a revolution in the realm of complex problem-solving within logistics and beyond.

Researchers at MIT and ETH Zurich have developed a machine learning-based technique that speeds up the optimization process used by companies like FedEx to deliver packages. This approach simplifies key steps in mixed integer linear programming (MILP) solvers and uses company-specific data to tune the process, resulting in 30-70% speedups without sacrificing accuracy. This has potential applications in a variety of industries facing complex resource allocation problems.

The research conducted by Massachusetts Institute of Technology and ETH Zurich aims to address complex logistics challenges, including delivering packages, distributing vaccines, and managing power grids. The traditional software used by companies like FedEx to find optimal delivery solutions is called a Mixed Integer Linear Programming (MILP) solver, but it can be time-consuming and may not always produce ideal solutions.

The newly developed technique employs machine learning to identify important intermediate steps in the MILP solver, resulting in a significant reduction of time required to unravel potential solutions. By using company-specific data, this approach allows for custom tailoring of the MILP solver. This new technique results in speeding up the MILP solver by 30-70% without sacrificing accuracy.

Lead author Kathy Wu, along with co-lead authors Sirui Li, Wenbin Ouyang, and Max Paulus, highlights the potential of combining machine learning and classical methods to address optimization problems. The research will be presented at the Neural Information Processing Systems Conference. The team hopes to further apply this approach to solve complex MILP problems and interpret the effectiveness of different separation algorithms.

Source: scitechdaily.com

Research indicates that the canine teeth of marsupial carnivores grow continuously throughout their lives.

New research from the University of Tasmania also confirms important and fundamental morphological differences in Tasmanian devils (Sarcophilus harrisii) compared to most other animals.

Young Tasmanian devil (Sarcophilus harrisii). Image credit: Keres H. / CC BY-SA 4.0.

There has long been interest in comparing the biology of placental and marsupial mammals and how different traits relate to adaptation and converging ecomorphological niches in different regions of the world. I’m here. One interesting feature is the tooth replacement pattern.

“Unlike humans, dogs and many other animals, which have a second set of baby teeth and adult teeth, we now know that the Tasmanian devil only has one tooth that serves them throughout their lives.” said researchers at the University of Tasmania. Professor Mena Jonesstudy author.

“When Tasmanian devil joeys are young, they have very small teeth that fit their small bodies.”

“Tasmanian devils are separated from their mothers when they are just one-third of their adult size, and at this point they must become independent and feed themselves.”

“Instead of spending time erupting into adult teeth like humans, the Tasmanian devil’s teeth simply ‘erupt’ from the jaw and gums, pushing out more and more to fill the Tasmanian devil’s large mouth and head. , they raise animals to hold meat and prey and for protection. ”

“This is a really cool fact about a really cool species, and it points to a completely different evolutionary solution to the formation of teeth in growing animals than we know.”

The same phenomenon is seen in local possums and possums, as well as in some ancient marsupials such as the giant volhyaenids and sabertooths of South America.

“This information will help researchers determine the age of the animals they are studying, including those monitored in the wild for Tasmanian devil facial tumor research,” Professor Jones said.

of study Published in Proceedings of the Royal Society B.

_____

Mena E. Jones. 2023. Overbudding of teeth in marsupial carnivores: compensation for constraints. Procedure R. Soc. B 290 (2013): 20230644; doi: 10.1098/rspb.2023.0644

Source: www.sci.news

Neanderthals May Have Been Early Risers, New Study Finds

When the ancestors of modern Eurasians migrated from Africa and interbred with the archaic humans of Eurasia, namely Neanderthals and Denisovans, the DNA of the archaic ancestors became anatomically integrated into the genomes of modern humans. homo sapiens. This process could accelerate adaptation to Eurasian environmental factors, such as reduced UV radiation and increased seasonal variation. In a new study, scientists from Vanderbilt University, the University of Pennsylvania, and the University of California, San Francisco have discovered lineage-specific genetic differences in circadian genes and their regulatory elements between humans and Neanderthals. They found that the introgressed genetic variants were enriched with effects on circadian regulation and consistently increased morningness tendencies in Europeans. The results expand our understanding of how the genomes of humans and our closest relatives responded to environments with different light-dark cycles.

Velasquez Alsuley other. They found that genetic material from Neanderthal ancestors may contribute to the tendency of some people today to be early risers, the type of people who wake up early and go to bed more easily. Image credit: Holger Neumann / Neanderthal Museum.

All anatomically modern humans trace their origins to the African continent about 300,000 years ago, where environmental factors shaped many of their biological characteristics.

They arrived in Eurasia 70,000 years ago, but other humans, Neanderthals and Denisovans, lived there for more than 400,000 years.

These archaic humans diverged from anatomically modern humans about 700,000 years ago, and as a result, humans and archaic hominid ancestors evolved under different environmental conditions.

“Although there was considerable variation in the latitudinal range of each group, Eurasian hominids primarily lived at consistently high latitudes and were therefore exposed to larger amplitude seasonal fluctuations in photoperiod,” said the University of California. said the San Francisco school. Dr. John Capra and his colleagues.

“Given the influence of environmental cues on circadian biology, we hypothesized that these separate evolutionary histories produced differences in circadian traits adapted to different environments.”

Although previous studies have shown that many of the archaic ancestors of modern humans are not beneficial and have been removed by natural selection, some archaic hominin variants that remain in human populations has shown evidence of adaptation.

For example, archaic genetic variation is thought to be associated with differences in hemoglobin levels, immune resistance to new pathogens, levels of skin pigmentation, and fat composition among Tibetans at high altitudes.

Changes in patterns and levels of light exposure have biological and behavioral effects that lead to evolutionary adaptations.

Scientists have extensively studied the evolution of circadian adaptations in insects, plants, and fish, but humans have been less well studied.

The Eurasian environment where Neanderthals and Denisovans lived for hundreds of thousands of years is located at higher latitudes and has more variable daylight hours than where modern humans evolved before leaving Africa.

Dr. Capra and his co-authors therefore investigated whether there was genetic evidence for differences in circadian clocks between Neanderthals and modern humans.

Using a combination of literature searches and expert knowledge, they defined a set of 246 circadian genes.

They found hundreds of genetic variations unique to each strain that can affect genes involved in the circadian clock.

Using artificial intelligence techniques, they identified 28 circadian genes that contain mutations that could alter splicing in archaic humans and that may be differentially regulated between modern and archaic humans. identified 16 circadian genes.

This indicates that there may be functional differences between the circadian clocks of ancient and modern humans.

Eurasian modern humans and Neanderthal ancestors interbred, so some humans may have acquired circadian variation from Neanderthals.

To test this, researchers investigated whether introgressed genetic variants were associated with the body’s preferences for wakefulness and sleep in a large cohort of hundreds of thousands of people at UK Biobank. did.

They found a number of introgressed mutants that affected sleep preferences, and most surprisingly, they found that these mutants consistently increased morningness, or the tendency to rise early.

This suggests a directional influence on this trait and is consistent with adaptations to high latitudes observed in other animals.

Increased morning time in humans is associated with a shortened circadian clock period. This may be beneficial at high latitudes, as it has been shown that sleep and wakefulness can be coordinated more quickly with external timing cues.

Shortening of the circadian period is required to synchronize the long summer light period at high latitudes in Drosophila, and selection for a shorter circadian period results in a latitudinal shift with increasing latitude in natural Drosophila populations. There is a latitudinal gradient in which the period decreases.

Therefore, the bias toward morningness in introgressed mutants may indicate selection for shortened circadian periods in populations living at high latitudes.

The tendency to be a morning person may have been evolutionarily beneficial to our ancestors who lived in the high latitudes of Europe, and would have been a Neanderthal genetic trait worth preserving.

“By combining ancient DNA, extensive genetic studies in modern humans, and artificial intelligence, we discovered substantial genetic differences in the circadian systems of Neanderthals and modern humans,” Dr. Capra said. .

“And by analyzing fragments of Neanderthal DNA that remain in the genomes of modern humans, we discovered surprising trends, many of which influence the regulation of circadian genes in modern humans. These effects are primarily in the consistent direction of increasing Neanderthal tendencies.” Morning people. ”

“This change is consistent with the effects of living at high latitudes on animals’ circadian clocks, and changes in seasonal light patterns may allow them to adjust their circadian clocks more quickly. ”

“Our next steps include applying these analyzes to more diverse modern human populations and investigating the effects of the Neanderthal variants we identified on circadian clocks in model systems. and applying similar analyzes to other potentially adaptive traits.”

of the team paper It was published in the magazine Genome biology and evolution.

_____

Kayla Velasquez-Arsley other. 2023. Archaic genetic introgression shaped human circadian characteristics. Genome biology and evolution 15 (12): evad203; doi: 10.1093/gbe/evad203

Source: www.sci.news

Cruise reduces self-driving workforce by 25%, another electric scooter startup leaves market, and a special year-end message

The Station is a weekly newsletter dedicated to all things transportation. Just sign up here and click on “The Station” to have our newsletter delivered to your inbox every weekend. Subscribe for free. Welcome to the station. It is the central hub for all past, present, and future means of moving people and goods from point A to point B. Hello! And goodbye! Well, at least until 2024. The station will be closed for a while until the end of this year. I would like to thank everyone who reads our weekly newsletter and sends me suggestions, tips, and criticism. Yes, I appreciate the thoughtful backlash. This year has seen new startups emerge (so many electric boat and RV companies, right?), more EVs on the roads, and numerous commercial milestones achieved in the self-driving vehicle industry. It was a year of lots of movement. Of course, there were dark moments and even shocking moments. Many startups went bankrupt, including a number of mobility SPACs, and layoffs remained widespread into the final months of the year. Two of the most surprising stories involve the self-driving car industry. Argo AI It made a comeback with a new AV startup funded by Softbank, but cruise. Cruise’s story continues to unfold and will likely play out until 2024. Last week was a tough week for Cruise, albeit as expected. As a result, the Cruise board, and by extension the GM board, are doing a housecleaning to restore years of technological advances. As part of that mission, nine top leaders were removed and 900 workers were laid off. We will continue to follow Cruise’s story next year. But that’s not our only focus. The TechCrunch team cares about the future of transportation, from new EV and battery technologies to electric and hydrogen aviation, self-driving cars, micromobility, and in-vehicle technology. It’s not just about highlighting the next new new thing. Instead, we strive to explain why it’s important and who it affects. In other words, we’re the kind of people who take unlikely exits and side streets to explore what others might avoid. Please join us. See you in the new year! Want to contact us with a tip, comment, or complaint? Email Kirsten at kirsten.karasec@techcrunch.com. Send your notes to tips@techcrunch.com. If you wish to remain anonymous, Click here to contact usthis includes SecureDrop (instructions here) and various encrypted messaging apps. micromobin The big talking point in Scooterville was the “seemingly” sudden decision. super pedestrian Just 18 months after raising $125 million, the company is closing its U.S. operations and beginning to consider selling its European operations. I don’t want to say I saw this coming, but given that in late November Superpedestrian began laying off several European executives responsible for global development and operations, Let’s just say I wasn’t shocked by the news. Superpedestrian’s Link scooters are available in about 60 cities in 11 countries, but are scheduled to be withdrawn from most markets by the end of 2023. The startup positioned itself as a partner for safe cities and invested in advanced passenger assistance technology by acquiring Navmatic in July 2021. That’s where Pedestrian Protection was born, Superpedestrian’s GPS-based safety system that could detect and correct unsafe rider behavior in real time. However, the system was competing with other camera-based computer vision systems popularized by Drover AI and Luna. Lime, the only big scooter company likely to survive, introduced its own version of rider-assistance technology on its scooters in July 2022, around the same time that Superpedestrian began cutting jobs. As the balance sheets of public companies Bird and MicroMobility.com (formerly Helbiz) demonstrate, shared micromobility is a difficult business to run properly. Bird has recently been kicked off the stock market, announced several layoffs and is likely close to filing for bankruptcy. MicroMobility.com has undergone not one but two reverse stock splits this year, and its stock price remains depressed. And after several failed acquisition talks, Tier Mobility also announced layoffs in November. Oh, and let’s not forget Boruto’s mysterious disappearance. My question now is who will be next to fly off to the great beyond? — Rebecca Beran This week’s sale We have lots of great deals this week! dimensional energy, a New York-based startup that develops sustainable aviation fuel from carbon dioxide emissions and water, has raised $20 million in a Series A round led by Envisioning Partners. Strategic investors include United Airlines Sustainable Flight Fund, Microsoft Climate Innovation Fund, Rock Creek Smart Aviation Futures Fund, DSC Investments, Derek US, and New York Ventures, as well as Elemental Excelerator and Chloe Capital. Existing investors also participated. summer timea Chinese new energy vehicle fleet management company, has completed an $80 million funding round to fuel R&D investment and real-time computational analysis. exponential energyThe Indian EV charging startup has raised $26.4 million in Series B led by Eight Road Ventures and TDK Ventures. This funding will help Exponent expand its 15-minute charging solution to five major cities in India in FY2024 and enter the intercity e-bus segment. The company plans to deploy 1,000 charging stations and equip 25,000 EVs with Exponent by 2025. Ric the mobility-as-a-service startup has raised €1.4 million ($1.53 million) from Habert Dassault Finance, AfriMobility (Akwa Group), angel investors, and banks including Bpifrance, Crédit Mutuel, and Caisse d’Épargne. meta fuela sustainable jet fuel startup, has raised $8 million in a round led by Energy Impact Partners and Contrarian Ventures. Vanmo, a São Paulo-based startup looking to expand electric motorcycle battery swapping in Latin America, has raised $30 million in a Series A round to capitalize on the growing popularity of bikes across the region. The equity and debt round was led by Monasees, with participation from Climate Technology Fund 2150 and Maniv Mobility.

Source: techcrunch.com

Webb’s fresh perspective on supernovae, laser connections between space stations, and the Europa Clipper mission

New high-definition images from NASA’s James Webb Space Telescope’s NIRCam (Near Infrared Camera) reveal intricate details of the supernova remnant Cassiopeia A (Cas A), which is struck by a gas outlet by a star before exploding. It shows an expanding shell of matter. Credits: NASA, ESA, CSA, STScI, Danny Milisavljevic (Purdue University), Ilse De Looze (UGent), Tea Temim (Princeton University)

NASAWebb Space Telescope observes newly exploded star…

The team prepares to install the moon rocket hardware…

And we completed NASA’s first bidirectional end-to-end laser relay system…

Some of the stories we want to share with you – this week at NASA!

Watch the web’s new high-definition exploded stars

NASA’s James Webb Space Telescope recently captured this new image of supernova remnant Cassiopeia A. This image, taken with Webb’s near-infrared camera, shows the star’s explosion at a resolution previously unattainable at these wavelengths, giving astronomers a hint at the dynamic processes occurring. . It’s inside a supernova remnant.

NASA’s Artemis II mission is making final preparations for its SLS rocket at Kennedy Space Center. The Orion stage adapter, a critical component that connects Orion to his SLS, recently underwent critical installation work on its diaphragm at Marshall Space Flight Center. This adapter plays an important role in preventing hydrogen gas buildup and ensuring safety during launch.Credit: NASA/Sam Lott

Team prepares to assemble moon rocket and spacecraft connectors

A team at NASA’s Marshall Space Flight Center recently flipped the Orion stage adapter over and prepared the adapter for diaphragm installation.

The stage adapter connects the Orion spacecraft to the Space Launch System rocket’s intermediate cryogenic propulsion stage (ICPS). The diaphragm helps prevent highly flammable hydrogen gas, which could leak from the rocket’s propellant tanks, from accumulating beneath Orion and its crew before and during launch.

NASA’s ILLUMA-T payload communicates with the LCRD via laser signals.Credit: NASA/Dave Ryan

Space station laser communication terminal achieves first link

NASA’s LCRD and the new space station technology experiment ILLUMA-T successfully exchanged data for the first time, establishing the first laser link between ILLUMA-T and an on-orbit laser relay system. LCRD and his ILLUMA-T teamed up to complete NASA’s first bidirectional end-to-end laser relay system.

Laser communications uses infrared light rather than traditional radio waves to send and receive signals, allowing spacecraft to pack more data into each transmission.

The “Message in a Bottle” campaign offers anyone the opportunity to stencil their name onto a microchip inscribed with U.S. Poet Laureate Ada Limón’s “Mystery Praise: A Poem to Europe.” The chip will be mounted on NASA’s Europa Clipper spacecraft, bound for Jupiter and its moon Europa. Credit: NASA

Add your name to join the European Clipper Mission

The deadline to participate in NASA’s European Clipper mission’s Message in a Bottle campaign is 11:59 p.m. EST, December 31, 2023. You can join the mission and carve your name on his Clipper spacecraft as it travels and explores 1.8 billion miles of Europe. Jupitericy moon, Europa.

For more information, visit go.nasa.gov/MessageInABottle.

What’s happening this week at @NASA!

Source: scitechdaily.com

Nighttime exposure to high levels of light linked with higher risk of anxiety and depression

A large-scale study involving 87,000 participants found that while excessive night-time light exposure increases the risk of mental illness, increasing daytime light can reduce these risks. This groundbreaking study highlights the importance of balancing light exposure for mental health and suggests simple lifestyle adjustments for better health.

Exposure to artificial light at night increases the risk of developing mental illnesses such as anxiety, bipolar disorder, and post-traumatic stress disorder.PTSD), with a tendency toward self-harm.

The world’s largest study of the effects of light exposure on mental health, involving nearly 87,000 people, found that increased exposure to light at night increases the risk of mental health conditions such as anxiety, bipolar disorder and PTSD. Not only that, but it has also been shown that the possibility of self-injury increases. harm. Importantly, the study also found that enhancing exposure to natural light during the day may serve as a non-drug approach to reducing the risk of psychosis.

Day and night light exposure: a balancing act

People exposed to high amounts of light at night had a 30 percent increased risk of depression, while those exposed to high amounts of light during the day had a 20 percent decreased risk of depression. A similar pattern of results was found for self-harm, psychosis, bipolar disorder, generalized anxiety disorder, and PTSD. These findings demonstrate that the simple practice of avoiding light at night and seeking brighter light during the day may be an effective non-pharmacological means of alleviating serious mental health problems. is showing.

The study, led by Associate Professor Sean Kane from the Monash School of Psychological Sciences and the Turner Institute for Brain and Mental Health in Melbourne, Australia, was published today in the journal Nature Mental Health.

“Our findings have potentially significant societal impact,” said Associate Professor Kane.

“If people understand that light exposure patterns have a huge impact on their mental health, they can take some simple steps to optimize their health. Let in bright light during the day. , it is important to get darkness at night.”

The study’s 86,772 participants, all from UK Biobank, were tested for light exposure, sleep, physical activity and mental health. Associate Professor Kane said the effects of night-time light exposure were independent of demographics, physical activity, season and employment.

“And our findings were consistent when considering shift work, sleep, urban versus rural living, and cardiometabolic health,” he said.

Challenging human biology with modern lighting

Modern, industrialized humanity has literally turned our biological systems upside down. According to Associate Professor Cain, our brains have evolved to function best in bright light during the day and little to no light at night.

“Humans today are challenging this biology, spending about 90% of their days under indoor electric lights that are too dim during the day and too bright at night compared to the natural light-dark cycle. It confuses our bodies and makes us feel sick,” he said.

Reference: “Day and night light exposure is associated with mental illness: an objective light study of over 85,000 people” Angus C. Burns, Daniel P. Windred, Martin K. Rutter, Patrick Olivier, Celine Vetter, Richa Saxena, Jacqueline M Lane, Andrew JK Phillips, Sean W. Kane, October 9, 2023; natural mental health.
DOI: 10.1038/s44220-023-00135-8

Source: scitechdaily.com

Recent study challenges previous beliefs about forest resilience

Recent research has shown that trees in humid regions are more vulnerable to drought, challenging previous beliefs about tree resilience. The study, which included analysis of more than 6.6 million tree rings, revealed that trees in arid regions are surprisingly drought tolerant. This finding highlights the widespread effects of climate change on forests and suggests that genetic diversity in drier regions may be important for adapting to changing conditions. There is. Credit: SciTechDaily.com

Scientists have flipped the script and revealed that trees in humid regions are more sensitive to drought.

This holiday season brings some surprising news about Christmas trees. Scientists have found that globally, trees that grow in wetter regions are more sensitive to drought. This means that if your tree was grown in a humid climate, it has likely been damaged over generations.

Debate over drought tolerance of trees

Scientists have long debated whether arid environments make trees more or less tolerant of drought. It seems intuitive that trees living at the biological margin are most vulnerable to climate change. Because even the slightest bit of extra stress can send a tree over the brink. On the other hand, these populations may be better able to withstand drought because they are adapted to harsher environments.

The trees of this lush temperate forest in the Cascade Mountains of Washington state may be less drought tolerant than trees in drier regions of the South.Credit: Joan Dudney

Insights from new research

According to a new study published in the journal science Increased water availability could “kill” trees by reducing their ability to adapt to drought, according to researchers from the University of California, Santa Barbara and the University of California, Davis. “And that’s really important to understand when we think about the global vulnerability of forest carbon stocks and forest health.” said Joan Dudney, an assistant professor and ecologist. “You don’t want to be a ‘spoiled’ tree when faced with a major drought.”

Dudney and his co-authors predicted that trees growing in the driest regions would be more sensitive to drought because they were already living on the edge of their limits. Furthermore, climate change models predict that these regions will dry out more rapidly than wetter regions. This change in climate can expose trees to conditions beyond their ability to adapt.

Methodology: Tree ring analysis

To measure drought sensitivity, the authors analyzed 6.6 million tree ring samples from 122 trees. seed World wide. They measured whether a tree was growing faster or slower than average based on the width of its growth rings. They correlated these trends with historical climate data such as precipitation and temperature.

The team then compared different regions’ responses to drought. “As you move to the drier edge of a species’ range, trees become less and less sensitive to drought,” said lead author Robert Heilmeyer, an environmental economist with the Environmental Research Program and the Bren School. he said. “Those trees are actually very resilient.”

Dudney, Heilmeyer, and their co-author Frances Moore were partially inspired by UCSB professor Tamma Carleton’s research on the effects of climate change on humanity. “This paper highlights the value of interdisciplinary scientific research,” added Moore, an associate professor at the University of California, Davis. “We applied economics methods originally developed to study how people and businesses adapt to changing climate, and applied them to ecological contexts to study the sensitivity of forests to drought. could be applied to.”

“A heat wave is likely to kill more people in a cool place like Seattle than in a hot city like Phoenix,” Heilmeyer said. It’s already quite hot in the Southwest, with a scorching heatwave occurring. But cities in the region are adapted to extreme climates, he points out. We now know that forests exhibit similar trends.

Impact on warm regions

Unfortunately, temperate regions are expected to become disproportionately drier in the coming decades. “Significant parts of the species’ ranges will be faced with entirely new climates, a phenomenon that these species do not find anywhere else in their ranges today,” Heilmeyer explained. The authors found that in 2100, 11% of the average species’ range will be drier than the driest part of its historical range. For some species, this increases to 50% or more.

“Broadly speaking, our study highlights that very few forests will be immune to the effects of climate change,” Dudney said. “Even wet forests are under more threat than we realize.”

But there’s also the other side of the coin. This species stores drought-tolerant resources in drier parts of its range and has the potential to strengthen forests in wetter regions. Previous research UCSB researchers have revealed that many species have the ability to adapt to environmental changes. But these researchers also discovered that trees move slowly from one generation to the next. This means that human intervention, such as assisted migration, may be required to take advantage of this genetic diversity.

Christmas tree and the fate of the forest

Whether the Christmas tree lives in a dry or humid region, its growth may decrease in the future. But understanding how trees respond to climate change can help secure the future of Tannenbaum and its wild trees.

Reference: “Drought sensitivity of mesic forests increases vulnerability to climate change” by Robert Heilmeyer, Joan Dudney, and Frances C. Moore, December 7, 2023. science.
DOI: 10.1126/science.adi1071

Source: scitechdaily.com

Meta threatened to delete sensitive data if underage users claim to have been exposed to predatory individuals, according to Attorney General.

New court filings say Meta has stolen sensitive data from test accounts mentioned in a New Mexico bombshell lawsuit that alleges underage Facebook and Instagram users are exposed to child predators. “He threatened to delete it,” he said.

New Mexico Attorney General Raul Torrez said in a Monday filing that Meta had “deactivated” several test accounts used by law enforcement to investigate the popular app.

According to the filing, Torrez will restrain Meta from deleting “any information related to the accounts referenced in the complaint or any information related to any account on which Meta has taken action based on the information in the complaint.” They are seeking a court order.

“The state filed this motion seeking an order requiring Meta to comply with its data retention obligations under New Mexico law,” the filing states.

The attorneys also cited New Mexico court precedent against destroying relevant evidence.

New Mexico Attorney General Raul Torrez said Meta had “deactivated” several test accounts used by law enforcement to investigate Instagram and Facebook. AP

Amazing lawsuit filed last weekAccording to , the test accounts used AI-generated photos that allegedly depicted children under the age of 14, and contained adult-oriented sexual content and content, including “genital photos and videos” and six offers. He said he was bombarded with unpleasant messages from alleged child predators. Pay to appear in porn videos.

Meta subsequently disabled these accounts. This allegedly hindered the ongoing investigation by denying authorities access to critical information “including the usernames of accounts with which investigators interacted, as well as search history and other information about those accounts.” That’s what it means.

It is unclear whether Meta has shut down the Facebook and Instagram accounts of the alleged child offenders.

Meta has been accused by the New Mexico AG’s office of failing to protect underage users. AFP (via Getty Images)

“Of course, we store data in accordance with our legal obligations,” a Meta spokesperson said.

Torres’ office did not comment on Monday’s filing.

In New Mexico, a test account called “Issa Bee” claiming to be a 13-year-old girl living in Albuquerque had more than 6,700 followers on Facebook, most of whom were “males between the ages of 18 and 40.” ” he claimed. -age.

The account has received several disturbing sexual offers, including one from an adult user who allegedly “openly promised $5,000 a week to be his ‘sugar baby’.” was.

According to the state, Meta notified the company on December 7, the day after the lawsuit was filed, that it would disable the test account.

The social media giant said: “Even though the account in question had been operating for several months without any action by Meta, and law enforcement had previously reported unlawful and unlawful content to Meta through reporting channels. Despite this, the company took this action, the filing states.

When the investigator tried to log in, he received a message warning that his account had been “deactivated.”

The message states that you have 30 days to request a review before your account is “permanently disabled.”

State attorneys contacted them the same day and asked for confirmation that Meta would “preserve all data” associated with the account, according to the filing.

Meta’s lawyers reportedly responded that the company “takes reasonable steps to identify the accounts referred to in the complaint and preserve relevant data and information regarding those accounts once identified.”

The state said Meta did not respond to requests for details about what data from accounts it deemed “relevant” and what data it would not keep.

“Given Meta’s refusal to preserve ‘all data’ related to the accounts mentioned in the complaint, a court order is required to preserve this important evidence for trial.” is stated in the submitted documents.

In October, a group of 33 state agencies sued Meta for targeting young users. Getty Images/iStockphoto

Meta CEO Mark Zuckerberg has been named as a defendant in a New Mexico lawsuit.

State officials allege that Mr. Zuckerberg’s product design decisions played a key role in putting underage users at risk.

Meta has not yet responded specifically to the lawsuit’s allegations.

“We use advanced technology, employ child safety experts, report content to the National Center for Missing and Exploited Children, and communicate information and tools with other companies and law enforcement agencies, including state attorneys general. to help root out looters,” Mehta said. Statement to the Wall Street Journal after the lawsuit was filed.

Meta CEO Mark Zuckerberg has been named as a defendant in a New Mexico lawsuit. AP

The New Mexico lawsuit is separate from a larger lawsuit filed by 33 state attorneys general in October.

The states allege that Meta intentionally made the app addictive to trap young users and collected personal data from underage users in violation of federal law.

Mr Mehta has denied any wrongdoing.

Source: nypost.com

Astrophysical mysteries unraveled by new dark matter theory

Researchers have advanced our understanding of dark matter through simulations that support the self-interacting dark matter (SIDM) theory. This theory has the potential to resolve the discrepancy in dark matter density observed in different galaxies, poses a challenge to traditional cold dark matter (CDM) models, and highlights the dynamic nature of dark matter. Credit: SciTechDaily.com

Dark matter may be more active than previously thought, reports a study from the University of California, Riverside.

Dark matter, which is thought to make up 85% of the matter in the universe, does not emit light and its properties are still poorly understood. Normal matter absorbs, reflects, and emits light, but dark matter cannot be seen directly, making it difficult to detect. A theory called “self-interacting dark matter” (SIDM) claims that dark matter particles self-interact with each other due to dark forces, causing them to collide strongly with each other near the centers of galaxies.

Among the works published in of Astrophysics Journal LetterA research team led by Haibo Yu, a professor of physics and astronomy at the University of California, Riverside, reports that SIDM can simultaneously explain two extreme astrophysical puzzles.

Understanding dark matter halos and gravitational lenses

“The first is a halo of dense dark matter in a giant elliptical galaxy,” Yu said. “The halo is detected by observations of strong gravitational lenses, and its density is so high that it is extremely unlikely under the prevailing cold dark matter theory. Second, the density of dark matter halos in superdiffuse galaxies is extremely low. is extremely low and difficult to explain using cold dark matter theory.”

A dark matter halo is an invisible halo of matter that permeates and surrounds a galaxy or galaxy cluster. Gravitational lensing occurs when light traveling across space from a distant galaxy is bent around a massive object. The cold dark matter (CDM) paradigm/theory assumes that dark matter particles do not collide. As the name suggests, superdiffuse galaxies have extremely low luminosity and a dispersed distribution of stars and gas.

Hai-Bo Yu is a theoretical physicist at the University of California, Riverside, with expertise in the particle properties of dark matter.Credit: Samantha Tiu

Yu was also joined in the study by Ethan Nadler, a postdoctoral fellow at the Carnegie Observatory and the University of Southern California, and Danen Yang, a postdoctoral fellow at UCR.

To show that SIDM can explain two puzzles in astrophysics, the research team presents a theory of cosmic structure formation with strong dark matter self-interactions at relevant mass scales for strong lenticular halos and superdiffuse galaxies. We conducted our first high-resolution simulation.

“These self-interactions cause heat transfer within the halo and diversify the halo density in the central region of the galaxy,” Nadler said. “In other words, some halos have higher center densities and others have lower center densities compared to their CDM counterparts, the details of which depend on the evolutionary history of the Universe and the environment of the individual halo.”

Challenges to the CDM paradigm and future research

According to the research team, these two puzzles pose a formidable challenge to the standard CDM paradigm.

“CDM takes on the challenge of explaining these mysteries,” Yang said. “SIDM is probably a good candidate for reconciling two opposing extremes. There are no other explanations in the literature. We now know that dark matter may be more complex and active than we expected. There is an interesting possibility that there is.”

The study also demonstrates the ability to investigate dark matter through astrophysical observations using computer simulation tools of cosmic structure formation.

“We hope that our study will encourage further research in this promising research area,” Yu said. “This is a particularly timely development given the expected influx of data in the near future from observatories such as the James Webb Space Telescope and the upcoming Rubin Observatory.”

Since around 2009, the work of Yu and his collaborators has popularized SIDM in the particle physics and astrophysics communities.

References: Ethan O. Nadler, Danen Yang, and Haibo Yu, “Self-interacting dark matter solutions for the extreme diversity of low-mass halo properties,” November 30, 2023. Astrophysics Journal Letter.
DOI: 10.3847/2041-8213/ad0e09

This research was supported by the John Templeton Foundation and the U.S. Department of Energy.

Source: scitechdaily.com

Apple requests court order to disclose customer information to law enforcement officers

WASHINGTON, Dec. 12 (Reuters) – Apple (AAPL.O) says it is seeking a judge’s order to turn over information about its customers’ push notifications to law enforcement, bringing the iPhone maker’s policy in line with rival Google’s and allowing authorities to obtain app data about users. The hurdles that must be cleared have been raised.

The new policy was not officially announced, but was announced in the past few days. Law enforcement guidelines published by Apple. This follows revelations by Oregon Sen. Ron Wyden that officials had requested such data not only from Apple but also from Alphabet Inc.’s Google. (GOOGL.O) Create an operating system for Android phones.

Apps of all kinds rely on push notifications to notify smartphone users of incoming messages, breaking news, and other updates. These are the audible “sounds” or visual indicators that users receive when they receive an email or when a sports team wins a game. What users often do not realize is that almost all such notifications are sent through Google and his Apple servers.

In the letter, first revealed by Reuters last week, Wyden said the practice gives the companies unique insight into the traffic flowing to users from these apps, and that the two companies can “see how users use specific apps.” “We are in a unique position to facilitate government oversight of what is happening.”


Although Apple did not officially announce this new policy, it was included in Apple’s published law enforcement guidelines within the past few days. Getty Images

Apple and Google both acknowledged receiving such requests. Apple added a section to its guidelines stating that such data can be obtained “via subpoena or larger legal process.” This text has now been updated to refer to more stringent warrant requirements.

Apple has not released an official statement. Google did not immediately respond to a request for comment.

Wyden said in a statement that Apple is “doing the right thing by aligning with Google in seeking a court order to turn over data related to push notifications.”

Source: nypost.com

Chia Genome Sequenced by Researchers, New Study Finds

Cheer (salvia hispanica) It is one of the most popular nutrient-dense foods and pseudocereals of the Lamiaceae family Lamiaceae. Chia seeds are rich in protein, polyunsaturated fatty acids, dietary fiber, and antioxidants. A team of scientists at Oregon State University has sequenced the chia genome, providing a blueprint for future research to exploit the nutritional and human health benefits of the chia plant.



chia seeds. Image credit: Valeria Lu.

Chia is an annual herbaceous plant in the Lamiaceae family, which also includes popular culinary herbs.

It is grown in southern Mexico and Central America for its nutrient-rich seeds containing protein, polyunsaturated fatty acids, dietary fiber, antioxidants, and minerals.

Compared to dietary fiber sources such as soy, wheat, and corn, chia seeds contain approximately 54g of dietary fiber per 100g, of which 93% is insoluble fiber.

Similarly, 60% of the total fatty acids are composed of polyunsaturated fatty acids, and proteins constitute 18–24% of the seed mass.

Additionally, the health-beneficial effects of chia seeds on improving muscle lipid content, cardiovascular health, total cholesterol ratio, triglyceride content, and anti-carcinogenic properties have been demonstrated in humans and animals.

The high fiber content in chia seeds also helps to reduce hypoglycemic effects and stabilize blood sugar levels in people with type 2 diabetes.

Professor Pankaj Jaiwal from Oregon State University said, “Our study opens up the possibility for scientists to study chia seeds with a view to improving human health, while also expanding knowledge of chia’s full range of nutritional benefits.” We will continue to deepen our understanding.”

“Long-term food and nutritional security currently requires diversifying human diets through breeding and genetic improvement of nutrient-rich so-called minor crops like chia,” said Dr. Sushma Naisani of Oregon State University. We have reached a stage where this is necessary.”

In the study, the authors assembled a haploid chia genome with an estimated genome size of 356 Mb.

They identified genes and genetic markers in chia that could help agricultural researchers breed plants to amplify plant traits valuable to human health.

They discovered 29 genes involved in the biosynthesis of polyunsaturated fatty acids and 93 genes that aid chia seeds’ gel-forming properties.

They also found 2,707 genes highly expressed in the seeds that are likely to produce small biologically active peptides (biopeptides) derived from proteins.

When seed proteins are digested in the intestinal tract, these small biopeptides are released and absorbed into the body, with potential properties that may help alleviate human health conditions such as type 2 diabetes and high blood pressure. Masu.

“This is the first report in silico “Annotation of plant genomes for protein-derived small biopeptides associated with improved human health,” the researchers said.

of findings It was published in the magazine Frontiers of plant science.

_____

parul gupta other. 2023. Reference genome of the nutrient-rich orphan crop chia (salvia hispanica) and implications for future breeding. front.plant science 14; doi: 10.3389/fps.2023.1272966

Source: www.sci.news

Report: Expectations for $2.5 billion drop in ad sales for Elon Musk’s X

< p > Ad sales for Elon Musk’s social media platform X in 2023 are expected to fall to about $2.5 billion. Bloomberg News reported Tuesday. Several companies, including Comcast and Walt Disney, stopped advertising on the platform after Musk last month agreed to a post on X (formerly Twitter) that claimed Jews were inciting hatred against white people. There was a pause. Joe Benarroch, head of business operations at Company X, told Reuters: “This report does not reflect the full scope of our business as sources relied upon by Bloomberg do not provide accurate and comprehensive details. “It gives an incomplete view.” Last month, Musk agreed with a post by X that claimed Jews were inciting hatred against white people. Getty Images for The New York Times < / p >
< p > As a publicly traded company, X’s revenue from advertising services in the last four quarters totaled $4.7 billion for the second half of 2021 and the first half of 2022, according to LSEG data. The company generated more than $600 million in advertising revenue in each of the first three quarters of 2023 and expects similar results this quarter, the report added, citing people familiar with the matter. Since Musk’s acquisition in October 2022, U.S. monthly ad revenue has fallen by at least 55% year over year every month, according to third-party data provided to Reuters in October. The company generated just over $600 million in ad revenue in each of the first three quarters of 2023, according to Bloomberg. zumapress.com < / p >
< p > Advertising sales account for 70% to 75% of X’s total revenue. Management had targeted $3 billion in revenue from advertising and subscription fees in 2023, but the company is far from reaching that number, according to the report. Musk also said in July that Twitter’s cash flow remains negative due to a nearly 50% drop in advertising revenue and high debt. < / p >

Source: nypost.com

New technology uses magnetism to control light sources

Researchers have developed a new method to create transparent magnetic materials using laser heating. This breakthrough is crucial for the integration of magneto-optic materials and optical circuits, a major challenge in this field. This is expected to lead to advances in miniature magneto-optical isolators, miniature lasers, high-resolution displays, and miniature optical devices. Credit: SciTechDaily.com

A new laser heating technique by a Japanese research team enables the integration of transparent magnetic materials into optical circuits, paving the way for advanced optical communication devices.

In a major advance in optical technology, researchers at Tohoku University and Toyohashi University of Technology have developed a new method to create transparent magnetic materials using laser heating. This breakthrough, recently published in the journal Optical Materials, presents a new approach to integrating magneto-optic materials and optical devices, a long-standing challenge in the field.

“The key to this result is that we used a special laser heating technology to create a transparent magnetic material called cerium-substituted yttrium iron garnet (Ce:YIG),” said Taichi Goto, associate professor at Tohoku University’s Institute of Electrical Communication. he points out. (RIEC) and study co-author. “This method addresses the critical challenge of integrating magneto-optic materials into optical circuits without causing damage, an issue that has hindered progress in miniaturizing optical communication devices.”

Laser heating setup for preparing transparent magnetic materials.Credit: Taichi Goto et al.

Magneto-optical isolators in optical communications

Magneto-optical isolators are essential for achieving stable optical communications. These act like traffic lights at traffic lights, allowing movement in one direction but not the other. Integrating these isolators into silicon-based photonic circuits is difficult because they typically require high-temperature processes.

As a result of this challenge, Goto and his colleagues turned to laser annealing, a technique that selectively heats specific areas of a material with a laser. This allows precise control that affects only the target area without affecting the surrounding areas.

Previous work has exploited this to selectively heat bismuth-substituted yttrium iron garnet (Bi:YIG) films deposited on dielectric mirrors. This allows Bi:YIG to be crystallized without affecting the dielectric mirror.

However, problems arise when working with Ce:YIG, whose magnetic and optical properties make it an ideal material for optical devices, as exposure to air causes undesirable chemical reactions.

To get around this, the researchers designed a new device that uses a laser to heat the material in a vacuum, meaning without air. This made it possible to precisely heat small areas (approximately 60 micrometers) without changing the surrounding material.

Impact on optical technology

“Transparent magnetic materials created using this method are expected to greatly facilitate the development of compact magneto-optical isolators that are essential for stable optical communications,” Goto added. “It also opens the door to creating powerful miniature lasers, high-resolution displays, and miniature optical devices.”

Reference: “Vacuum laser annealing of magneto-optical cerium-substituted yttrium-iron-garnet films” Hibiki Miyashita, Yuki Yoshihara, Kanta Mori, Takumi Oguchi, Pan Boy Lim, Mitsuteru Inoue, Kazushi Ishiyama, Taichi Goto, 2023. November 14th, optical materials.
DOI: 10.1016/j.optmat.2023.114530

Source: scitechdaily.com

Tesla issues widespread recall in response to Autopilot flaw following fatal Virginia crash and technology concerns.

Tesla has recalled nearly all vehicles sold in the United States to fix a flaw in Elon Musk’s electric car company’s Autopilot driver assistance system. The move comes after Virginia authorities discovered the vehicle’s software had been activated during a previous fatal crash. July.

The recall of more than 2 million vehicles, reportedly the largest in Tesla history, was revealed as part of an ongoing investigation by the National Highway Traffic Safety Administration.

The investigation, which began more than two years ago and includes an investigation into 956 crashes in which Autopilot was implicated, found that existing safety measures “may not be sufficient to prevent driver misuse of the software.” It was determined that there is.

“In certain situations, when Autosteer is activated and the driver is not responsible for operating the vehicle and is not prepared to intervene if necessary, or when Autosteer is canceled or activated. Failure to recognize when it is not present can increase the risk of a crash,” NHTSA said in a release.

Electric car manufacturer announces recall This will consist of an over-the-air software update that was expected to be rolled out on Tuesday or a little later. This update applies to Tesla Model 3, Model S, Model X, and Model Y vehicles manufactured in certain years, including those dating back to 2012.

NHTSA is still investigating the crash that led to the death of Pablo Teodoro III. WRC TV

The vehicle will be provided with “additional controls and warnings” to remind drivers to take precautions when using Autopilot, such as keeping both hands on the steering wheel and keeping their eyes on the road.

Tesla shares fell more than 1.5% in Wednesday trading before closing up 1%.

The announcement came on the same day that Virginia officials revealed that Autopilot was being used. Pablo Teodoro III, 57, crashed his Tesla into a tractor-trailer, causing a fatal accident. Authorities also determined that the Tesla vehicle was speeding before the accident.

Pablo Teodoro III had activated Autopilot before the fatal crash, officials said. Handouts to families

A spokeswoman for the Fauquier County Sheriff’s Office said Teodoro appeared to have taken action a second before the accident, but it was unclear what he did.

The investigation also found that the car’s systems “recognized something on the road and sent a message.”

NHTSA is still investigating the crash.

The recall also Washington Post’s shocking report Tesla claimed it was allowing Autopilot to be used in areas the software was not designed to handle.

Tesla is facing intense scrutiny over its Autopilot software. AP

The media claimed to have found at least eight fatal or serious accidents involving Tesla Autopilot on roads where “driving assistance software cannot reliably operate,” such as roads with hills or sharp curves.

In response to this article, Tesla defended the safety of its Autopilot software with a lengthy argued that “we have a moral obligation to keep improving what is already the best product.” -In-class safety system. ”

Elon Musk claims Autopilot is safe. Reuters

“The data is clear: the more automation technology provided to support drivers, the safer they and other road users will be,” the company said.

Tesla President Elon Musk reiterated that Autopilot is safe to use and emphasized the company’s commitment to developing driver assistance and fully self-driving features as an important part of the company’s long-term plans.

with post wire

Source: nypost.com

Hydrogen Cyanide Detected in Enceladus’ Plume by Planetary Researchers

Using data from NASA’s Cassini mission, planetary scientists have detected several compounds critical to the habitability of Saturn’s icy moon Enceladus, including hydrogen cyanide, acetylene, propylene, and ethane. . These compounds may support living microbial communities or drive complex organic syntheses leading to the origin of life.

Diagram of Enceladus’ plume activity.Image credit: Peter other., doi: 10.1038/s41550-023-02160-0.

“Our study provides further evidence that Enceladus hosts some of the most important molecules for both producing the building blocks of life and sustaining life through metabolic reactions,” said Harvard University Ph.D. said Jonah Peter, a student in the program.

“Not only does Enceladus appear to meet the basic requirements for habitability, but we are also wondering how complex biomolecules are formed there and what kinds of chemical pathways are involved. I got an idea about it.”

“The discovery of hydrogen cyanide was particularly exciting because it is the starting point for most theories about the origin of life.”

As we know, life requires building blocks such as amino acids, and hydrogen cyanide is one of the most important and versatile molecules required for the formation of amino acids.

Peter and his colleagues refer to hydrogen cyanide as the Swiss Army knife of amino acid precursors because its molecules stack up in different ways.

“The more we tested alternative models and tried to poke holes in the results, the stronger the evidence became,” Peter said.

“Ultimately, it became clear that there was no way to match the plume composition without including hydrogen cyanide.”

Saturn’s moon Enceladus with plumes. Image credit: NASA / JPL-Caltech / SSI / Kevin M. Gill.

In 2017, planetary scientists discovered evidence of chemistry on Enceladus that could help sustain life in the ocean, if it exists.

The combination of carbon dioxide, methane, and hydrogen in the plume suggested methanogenesis, a metabolic process that produces methane.

This process is widespread on Earth and may have been important for the origin of life on Earth.

Peter and his co-authors found evidence for additional energetic chemical sources that are far more powerful and diverse than methane production.

They discovered a series of oxidized organic compounds, showing scientists that Enceladus’ underground ocean potentially has many chemical pathways to support life. That’s because oxidation promotes the release of chemical energy.

“If methane production is like a small clock battery in terms of energy, then our findings suggest that Enceladus’ ocean could provide large amounts of energy for any life that might exist. This suggests that we may be able to provide something similar to car batteries,” said Dr. Kevin Hand, a researcher at NASA’s Jet Propulsion Laboratory.

Unlike previous studies that used laboratory experiments and geochemical modeling to recreate the conditions Cassini found on Enceladus, the authors relied on detailed statistical analysis.

They examined data collected by Cassini’s ion and neutral mass spectrometers, which study the gas, ions, and ice grains around Saturn.

By quantifying the amount of information contained in the data, the authors were able to uncover subtle differences in how well different compounds explain the Cassini signal.

“There are a lot of potential puzzle pieces that can be put together when trying to reconcile observed data,” Peter said.

“We used mathematics and statistical modeling to identify the combination of puzzle pieces that best matched the plume’s composition and made the most of the data without over-interpreting the limited data set.”

of findings It was published in the magazine natural astronomy.

_____

JS Peter other. Detection of HCN and diverse redox chemistries in Enceladus plumes. Nat Astron, published online on December 14, 2023. doi: 10.1038/s41550-023-02160-0

Source: www.sci.news

Controversial Ziploc phone hack ignites discussion about children’s screen time

Here’s how to get kids to zip up during long car rides. TikToker @jeffandlaurenshow “The best travel hack for staying calm during long road trips,” he says, involves a Ziploc bag and a smartphone. Her 17 second clipAn image uploaded to the social media platform last month shows the driver’s headrest being removed from the car, using scissors to cut two holes in the side of the Ziploc bag where the headrest is connected to the seat, and then replacing the headrest in its original position. The image shows a woman returning to her home. . A woman presses play on a children’s video on her mobile phone and puts it in her bag, creating a hands-free screen for her toddler. “Things I wish I had known when I became a mom for the first time,” the TikToker wrote in text above the video, which has been viewed more than 50 million times. One TikToker claims the “best travel hack to keep the peace on long trips” involves a Ziploc bag and a smartphone. Her clip sparked a debate about giving children too much screen time. Jeff Lauren Show/TikTok The clip sparked a debate on TikTok about giving kids too much screen time, with some calling the hack “ridiculous.” One commenter laughed: “Oh yeah, keep them glued to their screens.” “It’s better to let kids watch something on TV than to have them kicking and screaming and crying because they’re bored,” another argued. “If they’re bored, than engage with them because they’re your kids,” the TikToker retorted. “Read to them,” suggested another. “Some of the kids can’t read yet, they’re crazy!” someone yelled. “There is such a thing as a picture book,” said the third person, expressionless. “Things I wish I had known when I became a mom for the first time,” the TikToker wrote in text above the video, which has been viewed more than 50 million times. Jeff Lauren Show/TikTok One TikToker commented on the comment section, saying, “There’s a serious battle going on over parenting here.” “It’s a stupid fight (lol),” said one dispatcher. The American Academy of Child and Adolescent Psychiatry recommends limiting screen time for all children. People under 18 months should only be exposed to screens when video chatting with someone on the go. Young children between 18 and 24 months of age should stick to educational programming, the academy says. Screening time for children ages 2 to 5 must be limited to one hour on weekdays and three hours on Saturdays or Sundays. And parents should talk to their children ages 6 and up to “encourage healthy habits and limit activities that involve screens.” Too much screen time is associated with sleep, weight, and mood problems, as well as poor performance in school.

Source: nypost.com

Expecting an Increase in IT Budgets in 2024, Though Startups May Face Tough Conditions

I think most People would agree that 2023 was a difficult time for startups. Many layoffs occurred as companies struggled to move from growth to profitability. On the other hand, sales cycles were becoming longer and many startups were struggling to grow at a decent pace.

As we start to see that the economic indicators are starting to improve a little bit.
calming inflation,
cost of money You might think 2024 might be a better year if currencies weaken and headwinds for most currencies subside.

necessarily.

We’re entering a new era, one in which money won’t flow as freely, and according to the experts we spoke to, it won’t be coming back anytime soon. This means startups that don’t have enough capital now may continue to struggle in 2024, and flipping the calendar won’t change that.

What does that mean for startups heading into 2024? It means they need to prove their worth more than ever. This means you need enough cash to survive long sales cycles. That means he will have to fight for a piece of the corporate budget, and perhaps 2024 could be a year much like his 2023.

Budget outlook

A good starting point for budget discussions is what the proposed budget looks like. Analyst firms like IDC and Gartner forecast IT spending each year, but they typically adjust throughout the year as reality becomes clearer.

IDC predicts growth of 6.8%, up from 5% last year. This figure covers hardware, software, and services, but excludes communications spending. Gartner, on the other hand, predicts a slightly higher rate of 8.2%.

The overall upward trend should be good news for startups looking to corporate buyers to lift their business. But his Gartner analyst John-David Lovelock, who tracks IT budgets, says that while 2023 was a year of increased efficiency, it won’t just end in the new year.

Source: techcrunch.com

Tracing the Sea Ice Highway: The Arrival of North America’s First Immigrants

New findings suggest that early humans arrived in North America earlier than 13,000 years ago, likely taking advantage of the “sea ice highway” along the Pacific coast. This theory is supported by paleoclimate data, challenges traditional migration theories, and emphasizes the adaptability of early humans. Credit: SciTechDaily.com

A new study suggests that some early Americans may have traveled down the coast from Beringia 24,000 years ago on winter sea ice.

One of the hottest debates in archeology is when and how humans first arrived in North America. Archaeologists have traditionally argued that people walked through temporary ice-free passages between ice sheets an estimated 13,000 years ago.

New evidence casts doubt on traditional theory

But a growing number of archaeological and genetic discoveries, such as human footprints in New Mexico dating back some 23,000 years, suggest that humans were on the continent much earlier. These early Americans likely migrated from Beringia along the Pacific coastline. Beringia is a land bridge between Asia and North America that appeared during the last ice age maximum when ice sheets trapped large amounts of water and caused sea levels to drop.

Now, in a study presented at the American Geophysical Union Annual Meeting (AGU23) in San Francisco on Friday, December 15th, paleoclimate reconstructions of the Pacific Northwest show that sea ice has grown even further south than humans. This suggests that it may have been a means of transportation.

Coastal migration theory

The idea that early Americans may have traveled along the Pacific coast is not new. People may have been south of the giant ice sheet that once covered much of the continent by at least 16,000 years ago. Given that ice-free corridors would not open for thousands of years before these early arrivals, scientists proposed that people instead migrated along a “kelp highway.” Along this path, early Americans slowly made their way down to North America by ship. Abundant supplies found in coastal waters.

Archaeologists have discovered evidence of coastal settlements in western Canada dating back 14,000 years. But in 2020, researchers noted that freshwater from melting glaciers at the time may have created strong currents, making it difficult for people to travel along the coast.

Sea ice in Nunavut, Canada. Credit: Grid-Arendel CC-BY-NC-SA

An icy highway crossing a dangerous sea

To get a more complete picture of ocean conditions during key periods of human migration, Summer Pretorius and colleagues at the U.S. Geological Survey examined climate proxies in marine sediments along the coast. Most of the data came from small fossilized plankton. Its abundance and chemistry help scientists reconstruct ocean temperatures, salinity, and sea ice cover.

Praetorius’ presentation is part of a session at AGU23 on the climate history and geology of Beringia and the North Pacific during the Pleistocene. This year, his week-long conference brought together 24,000 of his experts from all areas of earth and space sciences in San Francisco and 3,000 online participants.

Using climate models, Praetorius’ team found that at the height of the Last Glacial Maximum, about 20,000 years ago, ocean currents were more than twice as strong as they are today due to glacial winds and falling sea levels. Pretorius said it would have been very difficult to travel by boat in these conditions, although it was not impossible to row.

However, records show that much of the region had winter sea ice until about 15,000 years ago. As a cold-adapted people, “they may have been using the sea ice as a foothold instead of having to row against this terrible glacial current,” Pretorius said.

Sea ice as a migration path

People in the Arctic now travel along the sea ice on dog sleds and snowmobiles. Pretorius said early Americans may also have used the “sea ice highway” to travel and hunt marine mammals, slowly making their way into North America in the process. Climate data suggest that conditions along the coastal route may have been favorable for migration between 24,500 and 22,000 years ago and between 16,400 and 14,800 years ago, possibly due to the presence of winter sea ice.

Integration of old and new theories

It’s difficult to prove that people used sea ice for travel, given that most ruins are underwater, but the idea is that without land bridges or easy ocean travel, humans It provides a new framework for understanding how it arrived in North America.

And the Sea Ice Highway is not mutually exclusive with other human movements beyond it, Pretorius said. The researchers’ model shows that by 14,000 years ago, the Alaska Current had calmed down, making it easier for people to travel by boat along the coast.

“There’s nothing wrong with it,” she said. “We are always amazed by the ingenuity of ancient humans.”

Source: scitechdaily.com

The highs and lows of Fintech in 2023

welcome home interchangeHere are the hottest fintech news from the past week. If you would like to receive The Interchange directly in your inbox every Sunday, please visit: here Sign up!

What a year!

This is the last edition of The Interchange for 2023. I can’t believe the year is almost over.

It’s been an eventful 12 months, even with reduced funding. We’ve seen a lot of M&A activity (read about it here, here, here, and here), BNPL has (sort of) made a comeback, and new fintech-focused ventures are raising money (Flourish and Vesey), several startup closures (Daylight being one example) and more layoffs than we would have liked.

And remember when FedNow went live in the US in July? At the time, the list included 35 financial institutions, and five months later, more than 330 of them were on the network. Participating in

There’s never a dull day in the world of fintech. For a broader look back, keep an eye out for a deeper dive into the top fintech stories we reported on through the end of the year.

I would like to take this opportunity to express my sincere gratitude to all the readers who have supported this magazine thus far. There are a lot of fintech newsletters out there, so the fact that you subscribe to this newsletter and keep coming back means a lot to us.

As we look forward to 2024, we wish you and your families a wonderful holiday season and a new year filled with lots of love, peace, and happiness. Thank you very much. — Mary Ann and Christine

weekly news

Christine reported on her dismissal: bolt, an e-commerce and fintech company that was at one time the subject of a federal investigation. The company confirmed through a spokesperson that the one-click checkout company has laid off 29% of its workforce. A Bolt spokesperson said in an emailed statement that the company is working to make Bolt an “operating model optimized for sustainable growth and efficiency” and is committed to “the next steps for our business.” “We can ramp up with the speed and agility necessary for this step.” ” We have been following Bolt for years, and this layoff is the latest of several other cuts that have taken place beyond 2022. In May 2022, Mary Ann reported that at least 185 employees, one-third of its workforce, had been laid off. Let go. Bolt, which provides software to retailers to speed up checkout, has raised a total of about $1 billion in venture backing and was once valued at $11 billion.

Mary Ann reported on several high-profile executive departures this week.She announced the following news credit karma Co-founder Nicole Mustard is stepping down after more than 16 years with the company. Mr. Mustard’s decision to step down marks the third high-profile departure of an executive at Credit Karma in 2023. She then wrote: open door Co-founder Eric Wu is leaving his job at a real estate fintech company after nine years to return to his startup roots. Notably, Wu has invested in startups during his time at Opendoor.according to crunch baseMr. Wu has backed dozens of companies, including Airtable, Scribe, Roofstock and the now-defunct Zeus Living.

At TC+, Jacqueline Melinek wrote about the following facts: robin hood‘s foray into cryptocurrencies isn’t necessarily new, and the company is still looking to expand its efforts in cryptocurrencies, even among groups that tend to stay away from the platform. “I think cryptocurrencies have always been created by and for very technical people,” said Johan Kerblatt, general manager of cryptocurrencies at Robinhood. chain reaction podcast. “At the end of the day, I don’t think customers care too much about what the underlying protocol is when they use cryptocurrencies. What network are they using? They just want things to work. That’s what I’m hoping for.”

Other items we are reading

Google Pay to add BNPL option in early 2024 (Apple made Apple Pay Later available to all users in the U.S. in October, after releasing it to a limited number of users in March.)

Visa acquires Brazilian fintech company Pismo in US$1 billion deal (See TechCrunch’s coverage of how the Pismo and Visa acquisitions first happened.)

Dallas-based Apex Fintech Solutions files for IPO in second public offering bid

Melio introduces real-time payments

HR technology platform Checkr moves to payments for gig workers

Deel launches compliance hub

Repay partners with Green Dot to enable cash-based bill payments

Klarna plans to replace employees with AI to boost profitability

Neobank Dave’s new chatbot achieves 89% resolution rate, CEO says (Go here to read Mary Ann’s Q&A with Dave’s founders in March.)

Funding and M&A

As seen on TechCrunch:

SumUp raises another €285m in growth funding to weather the fintech storm

Comun Channelizes Local Bank Approach to Serve Latino Immigrants

UK International Investment backs India’s Aye Finance with $37 million funding

Hyperplane wants to bring AI to banks

Kapital secures $165 million in equity and debt to provide financial visibility to Latin American small businesses

Prevu’s home sales process rewards homebuyers with cashback rebates

can be seen elsewhere:

Launch of Stairs Financial platform to assist first-time home buyers

Waste management payments company CurbWaste raises $10 million

Fintech startup Pontera raises $60 million, plans to expand jobs in Israel

Completed $12 million Series B financing in January

Necto raises $8 million in seed funding

HSBC supports Aii’s decarbonization grant fund

E-commerce financier SellersFi secures Citi-led credit facility

Image credits: Bryce Durbin

Source: techcrunch.com

Getting the Gateway to the Moon Ready

NASA’s Artemis II mission is making final preparations for its SLS rocket at Kennedy Space Center. The Orion stage adapter, a critical component that connects Orion to his SLS, recently underwent critical installation work on its diaphragm at Marshall Space Flight Center. This adapter plays an important role in preventing hydrogen gas buildup and ensuring safety during launch.Credit: NASA/Sam Lott

NASAThe Artemis II mission is making final preparations. SLS rocket. The Orion stage adapter, essential for connecting Orion to SLS and ensuring launch safety, has reached a key milestone. SLS is essential to NASA’s lunar exploration goals.

Elements of the super-heavy lift SLS (Space Launch System) rocket for NASA’s Artemis II mission are undergoing final preparations before being shipped to NASA Kennedy Space Center in Florida for stacking and pre-launch activities in 2024. It is being said.

orion stage adapter

A team at NASA’s Marshall Space Flight Center in Huntsville, Alabama, recently installed the Orion Stage Adapter, a ring structure that connects NASA’s Orion spacecraft to the SLS rocket’s Interim Cryogenic Propulsion Stage (ICPS), in preparation for the installation of the diaphragm. rotated. The Nov. 30 installation is one of the final steps for the adapter before it is ready to be shipped to Kennedy on NASA’s Super Guppy cargo plane.

Diaphragm safety and functionality

“The diaphragm is a composite dome-shaped structure that isolates the volume above the ICPS from the volume below Orion,” said Brent, director of Orion Stage Adapter in Marshall’s SLS Program Spacecraft/Payload Integration and Evolution Office. Gaddes said. . “This acts as a barrier between the two, allowing highly flammable hydrogen gas that could leak from the rocket’s propellant tanks to accumulate beneath the Orion spacecraft and its crew before and during launch. It prevents

Engineers at NASA’s Marshall Space Flight Center in Huntsville, Alabama, recently rotated, or “flipped” the smallest key element to attach critical components to NASA’s SLS (Space Launch System) rocket on Nov. 30. I let it happen. 5 feet tall, 1,800 rockets. -Pond’s Orion stage adapter connects NASA’s Orion spacecraft to his SLS rocket’s interim cryogenic propulsion stage and is manufactured entirely in Marshall. The recently installed diaphragm will act as a barrier to prevent gases generated during Artemis II’s launch from entering the spacecraft.Credit: NASA’s Marshall Space Flight Center

The role of adapters in SLS Rocket

At 5 feet tall and weighing 1,800 pounds, the adapter is the smallest key element of the SLS rocket, which will generate more than 8.8 million pounds of thrust to launch the four Artemis astronauts into the constellation of Orion around the moon. . This adapter is completely manufactured by Marshall’s engineering team.

SLS: Pillar of deep space exploration

NASA is working to land the first woman and first person of color on the moon under Artemis. SLS is part of NASA’s deep space exploration backbone, along with Orion and Gateway in lunar orbit and the Commercial Manned Landing System. SLS is the only rocket capable of sending Orion, astronauts, and supplies to the moon in a single launch.

Source: scitechdaily.com

Understanding the Law of X: A Guide for Cloud Leaders on Balancing Growth and Profits

As an interest rate Returning to historical norms, the world has returned its focus to cost of capital and free cash flow generation. In order for companies to adhere to traditional heuristics like the Rule of 40 (i.e., the idea that the sum of revenue growth and profit margin must equal 40% or more, a metric that Bessemer helped popularize) We are working hard. Executives at both private and public cloud companies agree that free cash flow (FCF) margins are just as important (if not more important) than growth, and that the trade-off is he says 1:1. I often think about it. Many finance executives love the “Rule of 40” for its clarity, but placing equal emphasis on growth and profitability in late-stage businesses is flawed and leads to bad business decisions. I am.

our view

For companies with adequate FCF margins, growth must remain a top priority. There are good reasons to emphasize efficiency, but Traditional Rule of 40 Mathematics Is Completely Wrong When a company approaches its break-even point and has positive free cash flow,

The world has hyper-rotated to an FCF margin mindset instead of a growth mindset, which is counter to efficient business growth. Long-term models show that growth should be valued at least two to three times more than his FCF margin, even in tight markets.

Equivalent emphasis on growth and profitability in late-stage businesses is flawed and leads to bad business decisions.

why?

An increase in margin has a linear effect on value, but an increase in growth rate can have a compound effect on value. We provide detailed calculations below, but when we backtest the relative importance of growth and FCF margins, the correlation of public market valuations confirms it. Actual ratios vary widely in the short term (ranging from about 2x to about 9x over the past few years), but over the long term they are typically 2x to 3x growth value over profitability. It comes down to proportions.

Even the most conservative financial planner recommends that you can safely use a growth rate of up to 2x for late-stage private company profitability. Publicly traded companies with a low cost of capital can use multiples of up to 2-3x (as long as growth is efficient).

Image credits: Bessemer Venture Partners

Source: techcrunch.com

Revealing an Innovative Approach to Cooling

Schematic diagram showing cooling of nanopores by charge-selective ion transport. Credit: 2023 Tsutsui et al., Peltier Cooling for Thermal Management of Nanofluidic Devices, Devices, ed.

Groundbreaking work by Japanese researchers demonstrates nanopore-mediated cooling, revolutionizing temperature control in microfluidic systems and deepening our understanding of cellular ion channels.

Have you ever wondered how water boils in an electric kettle? Most people may think that electricity just heats a metal coil inside the kettle and transfers that heat to the water. . But electricity can do so much more. When electricity causes ions in a solution to flow, heat is generated. If all ions and surrounding molecules are free to move, this heating effect will be uniform throughout the solution. Now, Japanese researchers have investigated what happens if this flow is blocked in one direction.

Cooling with nanopore technology

In a recently published study, deviceA team led by researchers at Osaka University’s SANKEN (National Institute of Scientific and Industrial Research) has shown that cooling can be achieved by using nanopores (very small holes in membranes) as gateways that allow only certain ions to pass through. Through.

In general, when electricity is used to drive ions in a solution, positively charged ions and negatively charged ions are attracted in opposite directions. Therefore, the thermal energy carried by the ions travels in both directions.

Understanding ion flow and temperature control

If the path of the ions is blocked by a membrane that can only pass through the nanopores, it becomes possible to control the flow. For example, if the pore surface is negatively charged, negative ions can interact without passing through, and only positive ions will flow with energy.

“At high ion concentrations, we measured an increase in temperature as the power increased,” explains study lead author Mayu Tsutsui. “However, at low concentrations, the available negative ions interact with the negatively charged nanopore walls. Therefore, only positively charged ions passed through the nanopore and a decrease in temperature was observed. ”

Applications in microfluidics and cell biology

The demonstrated ionic cooling could potentially be used to cool microfluidic systems, setups used to move, mix, or interrogate very small volumes of liquids. Such systems are important across many fields, from microelectronics to nanomedicine.

Additionally, this discovery could help further our understanding of ion channels, which play a key role in the delicate balance mechanisms of cells. Such insights could be key to understanding function and disease and designing treatments.

Broader implications and future prospects

“We are excited about the breadth of the potential impact of our findings,” says Yuji Kawai, lead author of the study. “There is considerable scope to tune nanopore materials to tune cooling. Additionally, arrays of nanopores can be created to amplify the effect.”

The list of areas that could be enhanced by this discovery is indeed considerable, extending to the use of temperature gradients to generate electrical potentials. This has potential applications in temperature sensing and blue power generation.

References: “Peltier Cooling for Thermal Management in Nanofluidic Devices” by Mayu Tsutsui, Kazumichi Yokota, Wei Lung Su, Dennis Garoli, Hirofumi Oguji, and Yuji Kawai, December 5, 2023. device.
DOI: 10.1016/j.device.2023.100188

Source: scitechdaily.com

Google quietly discontinues popular apps as part of restructuring efforts

Google is removing popular apps in a new shake-up within the company.

The Google Play Movies & TV app will be retired soon.

The service has already been removed from Roku devices and most smart TVs, and over the next few weeks, Google plans to continue shutting down the service until it’s gone completely. It’s still available on Android TV and the Google Play Store, but not for much longer.

“We’re making several changes to simplify the way you buy new movies and access the movies and TV shows you buy through Google,” the company said in a statement. Posted in support thread Android TV Help.

Starting January 17th, users will no longer be able to access content through Play Movies & TV. But don’t worry, your rented or purchased movies won’t be lost forever. All your purchased movies and TV will be transferred to Android TV and YouTube.

“As a result of these changes, Google Play Movies & TV will no longer be available on Android TV devices or the Google Play website,” Google explained. “However, you will still have access to all previously purchased titles (including active rentals) on Android TV devices, Google TV devices, the Google TV mobile app (Android and iOS), and YouTube.”

The tech giant has been slowly discontinuing its Play Movies & TV app since launching a standalone TV app in 2021.


Starting January 17th, users will no longer be able to access content through Play Movies & TV. Daniel Krassoa – Stock.adobe.com

When this change takes effect on January 17th, people with Android TV-powered TVs or streaming devices will be able to watch previously purchased titles or purchase new movies from the Shop tab. Purchased titles and active rentals will be displayed.

On a cable box or set-top box with Android TV, the YouTube app stores all your previously purchased content. YouTube is also the new content home for people using web browsers.

These changes come on the heels of Google removing inactive Gmail accounts in a cybersecurity effort and introducing an AI-powered makeover with five new features.

Source: nypost.com

Next Phase of Human Clinical Trials for Revolutionary Sepsis Treatment Commences

Scientists have developed a promising treatment for sepsis, and clinical trials using sodium ascorbate, a vitamin C preparation, have shown effective results. The treatment has progressed into extensive clinical trials across Australia and demonstrated significant improvements in sepsis patients, including improved kidney function and reduced dependence on other drugs. This breakthrough, the result of decades of research, brings hope to a disease that is the leading cause of death in intensive care units around the world.

Flory Institute researchers, in collaboration with hospital intensivists, have demonstrated that sodium ascorbate, a pH-balanced formulation of vitamin C, is effective in treating sepsis.

Researchers at the Florey Institute have demonstrated that the formulation they have developed reduces deadly sepsis, and the next phase of clinical trials is set to begin across Australia next month.

Promising results from early clinical trial conducted at Melbourne’s Austin Hospital published in journal Critical carehave shown that sodium ascorbate, a pH-balanced formulation of vitamin C, is effective in treating sepsis.

Lead researcher Associate Professor Yugish Lankadeva said sepsis is notoriously difficult to treat and is often fatal.

LR Florey Professor Clive May, Austin Health Intensivist Professor Rinaldo Bellomo and Florey Associate Professor Yugish Rankadeva discovered that sodium ascorbate can be used to treat sepsis.Credit: Flory

Challenges in sepsis treatment

“Sepsis accounts for 35 to 50 percent of all hospital deaths. It is when the immune system is unable to fight the underlying infection, causing a life-threatening drop in blood pressure, multiple organ failure, and death. ,” said Associate Professor Lankadeva. In our clinical trial at Austin Hospital, sodium ascorbate was administered into patients’ bloodstreams, resulting in promising improvements in multiple organs. ”

Associate Professor Lankadeva, Florey’s research director for Systems Neuroscience, said of the next steps: $4.9 million government-funded research project Delivered in intensive care units in Adelaide, Melbourne, Perth, Brisbane, Alice Springs and Sydney.

“We will recruit 300 adult sepsis patients who will receive either our formulation or a placebo in addition to their usual hospital care. These results will provide additional data to determine the efficacy of the formulation. It will help in collection,” said Associate Professor Lankadeva.

Flory scientists have created a special formulation of sodium ascorbate to treat sepsis.Credit: Flory

Insights into previous trials

Professor Rinaldo Bellomo, director of intensive care research at Austin Hospital, said the first part of the trial at his department involved 30 adult sepsis patients between October 2020 and November 2022.

While in intensive care in the hospital, half of the patients were randomly assigned to receive sodium ascorbate, and the other half received a placebo.

This study found that patients with sepsis treated with sodium ascorbate:

  • Signs that more urine is produced and kidney function has improved
  • Less need for noradrenaline, a drug used clinically to restore blood pressure
  • He showed signs of improved function in multiple organs.

“Sepsis is the number one cause of death in intensive care units in Australia and around the world,” Professor Bellomo said. “In many cases, the disease progresses so rapidly that by the time patients reach us, they are already seriously ill. It will be a huge change.”

Decades of research bear fruit

Professor Clive May, Florey Senior Research Fellow on the project, has been researching how sepsis causes organ failure, particularly damage to the brain and kidneys, for more than 20 years.

“By showing decreased oxygen levels in the tissues of sepsis, we found that sodium ascorbate was a possible treatment.

“We have seen dramatic results in preclinical studies, where extremely high doses of sodium ascorbate caused complete recovery within just three hours with no side effects. It’s heartening to see that it’s paying off and bringing treatments into the hands of patients,” said Professor Clive May.

Surviving sepsis: The patient’s perspective

Longtime Flory staffer Brett Purcell serves as the consumer representative for the MEGASCORES research program, providing a valuable perspective from sepsis survivors.

“In 2011 I was taken to the hospital by ambulance with high fever and delirium. I was suffering from the early stages of sepsis. My condition gradually worsened and I was transferred to a larger hospital after 12 days. By that time My heart was severely infected and I was in septic shock. Six months ago I had a successful aortic valve replacement. Unfortunately the valve was infected.

“The surgical team repaired the damage in a six-hour operation, but my condition deteriorated to critical condition. I was told it would be an hour. It was the good decision-making of the surgical team and ICU intensivist that saved me. I was put on life support with an ECMO machine and dialysis, and my symptoms rapidly worsened. Improved.

“After almost eight weeks in the hospital, I’m home. I’m really lucky to be alive and hope this new research using sodium ascorbate is less invasive, faster, and extremely effective in fighting sepsis.” We hope to provide hospitals with a new and effective life-saving tool.”

Reference: “Ultra-dose sodium ascorbate: pilot, single-dose, physiological effects, double-blind, randomized, controlled trial” Fumitaka Yanase, Sofia Spano, Akinori Maeda, Anis Chaba, Thummaporn Naorungroj, Connie Pei Chen Ow , Yugeesh R. Rankadeva, Clive N. May, Ashenafi H. Betley, Darius JR Lane, Glenn M. Eastwood, Mark P. Plummer, Rinaldo Bellomo, October 12, 2023. Critical care.
DOI: 10.1186/s13054-023-04644-x

Source: scitechdaily.com

Shetland Islands’ Saxavod Spaceport receives license for UK’s inaugural vertical rocket launch | Latest UK News

A site on the northernmost tip of the Shetland Islands has become the UK’s first licensed spaceport for vertical rocket launches.

The Saxavod spaceport, located on the small island of Unst, has received a license from the Civil Aviation Authority (CAA) and will be able to conduct its first launch in 2024.

Regulators have verified that the privately owned spaceport meets safety and environmental requirements for vertical space launches.

Frank and Debbie Strong have owned a former RAF base on a remote peninsula in Unst since 2004.

Authorized for up to 30 launches per year, it caters to companies looking to launch satellites into polar or sun-synchronous orbits.

Just under £30 million has so far been spent on developing the spaceport, which includes three launch pads and a hangar for assembling rockets.

Two German companies, Rocket Factory Augsburg and High Impulse, hope to launch from Saxavoord in 2024.

The couple also have plans to build a hotel and visitor center in Saxavod.

image:
Frank Strang and his wife Debbie own the Saxavod Spaceport in Unst.Photo: Sakusa Vod

“A moment that defined an era”

Tim Johnson, director of space regulation at the CAA, said: “The granting of the license to Saxavoord is a defining moment for the UK space sector.”

“We could soon be rocketing satellites into orbit from Scotland, marking the start of a new chapter for British space.

“We are undertaking important work to ensure the UK’s space activities are safe and sustainable for everyone.”

image:
Photo: Sakusa Vod

image:
Photo: Sakusa Vod

Mr Strang said the award of the license was “historic” and said: “Our team is extremely proud to have been entrusted by the government to operate a complex, multi-disciplinary, multi-launch spaceport. We all take this responsibility very seriously.”

“There is still a lot of work to do, but this is a great way to end the year and head into Christmas.”

Cornwall Spaceport has become the UK’s first licensed spaceport, but the Saxavord approval allows aircraft to launch rockets vertically rather than horizontally.

Source: news.sky.com

Volcanoes: Not as calm as they seem – Explosive secrets unveiled

Researchers are analyzing the Chomadul volcano to comprehend the sudden eruption of a long-dormant volcano. The chemical and mineral composition of magma has been the focus of research to gain insight into volcanic reactivation and prediction of eruptions. This has underscored the potential hazards of inactive volcanoes. The dormant period of a volcano could potentially be interrupted by a rapid and hazardous eruption. The study by Hungarian researchers has helped uncover warning signs before the eruption of long-dormant volcanoes. They focused on the Chomadul volcano in the Carpathian-Pannonian region. The team used mineralogical and chemical composition data to understand magma evolution and infer the structure of the volcanic subsurface magma chamber. The study revealed that the volcanic activity during the last active period was mainly explosive. The eruption of Chomadul volcano was analyzed in terms of its eruptive history. The researchers were able to determine the causes and processes that control the eruption style of volcanic activity through a detailed study of rock-forming minerals. The key mineral, amphibole, played a crucial role in the study. It suggested that water-rich recharge magmas played an important role in triggering explosive eruptions. The research also highlighted the importance of quantitative volcanic petrology studies in understanding pre-eruption signals and enhancing eruption prediction capabilities. The study of Chomadul volcano has attracted international attention and is significant in identifying potential dangers associated with long-dormant volcanoes.

Source: scitechdaily.com