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Reports of birds being trapped in the center of hurricanes date back to at least the 19th century, when crews observed the phenomenon from the bows of ships and saw their vessels become mobile ports for exhausted birds.
"It's been really fun reading some of these older observations from the 1800s about taking a ship through a hurricane eye and watching birds landing on it," said Van Den Broeke, associate professor of Earth and atmospheric sciences. "So we've known for a long time that this happens.
"But it's really only since (the advent of) radar observations that we have gotten any sense of how many of these systems actually do transport birds and insects."
The technology that allowed meteorologists to really begin differentiating weather from organisms -- dual-polarimetric radar, which added a second, vertical dimension to previously one-dimensional observations -- became widely available only in the past 10 years. Which means that much still remains unclear about when, how often and under what conditions a hurricane turns a free bird into a whirlybird.
[...] Though the intensity of a hurricane may hold the greatest sway, Van Den Broeke came across evidence that timing and geography matter, too. The largest bioscatter signatures appeared in hurricanes that occurred between July and October, when many bird species are migrating southward to the tropics, suggesting that native seabirds are not alone in getting swept up. Bioscatter was also larger and denser, on average, in hurricanes that struck the Gulf Coast and Florida, which boast a larger concentration and diversity of birds than other areas struck by the recorded hurricanes.
[...] He's now analyzing inversion data collected by parachuted instruments, called dropsondes, that are released within hurricanes from aircraft flown by the U.S. Air Force and the National Oceanic and Atmospheric Administration.
"I'm comparing the observations of inversion height to the bioscatter signatures," said Van Den Broeke, whose work is supported by the National Science Foundation. "Does it match up? Do birds fly above that? Below it? And can we say something, then, about intensity changes in tropical cyclones, and relate that to how the bioscatter signature behaved?
"It's possible there's some kind of systematic effect there."
If so, bioscatter altitude might eventually become a radar-based proxy for hurricane traits that can currently be measured only via dropsonde.
Journal Reference:
Matthew S. Van Den Broeke. ZSL Publications [open], Remote Sensing in Ecology and Conservation (DOI: 10.1002/rse2.225)
A 'cousin' of Viagra reduces obesity by stimulating cells to burn fat:
These findings, published online Oct. 7 in the Journal of Clinical Investigation, reveal that a chemical inhibitor of the enzyme PDE9 stimulates cells to burn more fat. This occurred in male mice and in female mice whose sex hormones were reduced by removing their ovaries, thus mimicking menopause. Postmenopausal women are well known to be at increased risk for obesity around their waist as well as at risk for cardiovascular and metabolic disease.
Inhibiting PDE9 did not cause these changes in female mice that had their ovaries, so female sex hormone status was important in the study.
“Currently, there isn’t a pill that has been proven effective for treating severe obesity, yet such obesity is a global health problem that increases the risk of many other diseases,” says senior investigator David Kass, M.D., Abraham and Virginia Weiss Professor of Cardiology at the Johns Hopkins University School of Medicine. “What makes our findings exciting is that we found an oral medication that activates fat-burning in mice to reduce obesity and fat buildup in organs like the liver and heart that contribute to disease; this is new.”
This study follows work reported by the same laboratory in 2015 that first showed the PDE9 enzyme is present in the heart and contributes to heart disease triggered by high blood pressure. Blocking PDE9 increases the amount of a small molecule known as cyclic GMP, which in turn controls many aspects of cell function throughout the body. PDE9 is the enzyme cousin of another protein called PDE5, which also controls cyclic GMP and is blocked by drugs such as Viagra. Inhibitors of PDE9 are experimental, so there is no drug name yet.
Based on these results, the investigators suspected PDE9 inhibition might improve cardiometabolic syndrome (CMS), a constellation of common conditions including high blood pressure; high blood sugar, cholesterol and triglycerides; and excess body fat, particularly around the waist. CMS is considered a pandemic by medical experts and a major risk factor for heart disease, stroke, type 2 diabetes, cancers and COVID-19.
Journal Reference:
Sumita Mishra, Nandhini Sadagopan, Brittany Dunkerly-Eyring, et al. Inhibition of phosphodiesterase type 9 reduces obesity and cardiometabolic syndrome in mice [open], The Journal of Clinical Investigation (DOI: 10.1172/JCI148798)
Nvidia Offers Concessions in EU as Arm Deal Probe Extended
The European Commission (EC) this week extended its probe of Nvidia's proposed acquisition of Arm until at least October 27 and said that Nvidia offered the EU certain concessions to[sic] in a bid to persuade the bloc's antimonopoly regulators to approve the deal. Experts say that the EU regulatory review will take considerably longer.
In a bid to make regulators approve the deal to acquire Arm, Nvidia is eager to offer various incentives to respective countries or blocs. In the U.K., the company proposed to invest 'at least' $100 million in the country's most powerful supercomputer. The EC said that it had received concessions proposal from Nvidia as well, but did not elaborate, reports Bloomberg.
Now that the probe is formally extended to October 27, the EU competition authority will request opinion from competitors and clients before determining whether to accept Nvidia's concessions, demand more or initiate a four-month long investigation, reports Reuters. Bloomberg believes that the probe will be extended further, which will give the EC some additional time to seek feedback from interested parties and figure out what it might get from Nvidia.
Also at Notebookcheck.
Previously: Nvidia-Branded ARM CPUs; UK Trade Union Speaks Out Against Deal
Nvidia's $40 Billion ARM Acquisition: "All but Dead"?
Related: Arm Officially Supports Panfrost Open-Source Mali GPU Driver Development
Samsung Still on Track for 3nm Chip Production, but Mass Production Will Start in H1 2022:
A while back, Samsung announced that it would be mass producing 3GAE (3nm Gate-All-Around Early) and 3GAP (3nm Gate-All-Around Plus) nodes, resulting in incredible performance and power-efficiency gains. Unfortunately, not everything groundbreaking will have a positive start, and while the Korean giant aims to commence its mass production plans, those will happen in the first half of 2022.
[...] Instead of pushing forward just to get ahead or match TSMC’s progress, we believe that Samsung has made the right call in delaying its 3nm technology. This will allow the Korean manufacturer to establish a firm base, get over the experimental process earlier, and churn out a higher number of wafers at a faster pace to various clients. Though Samsung claims that its 3nm technology will offer a 35 percent performance jump and 50 percent power savings compared to its 7nm LPP nodes, it is not confirmed how it will fare against TSMC’s own 3nm offerings.
[...] However, Samsung continues to exude that ‘never give up’ attitude as we previously reported that the Korean giant is about to finalize its $17 billion chip plant in Texas. Perhaps that location might also serve various clientele for 3nm orders. It looks like we will find out next year.
Elastic polymer that is both stiff and tough, resolves long-standing quandary:
"In addition to developing polymers for emerging applications, scientists are facing an urgent challenge: Plastic pollution," said Zhigang Suo, the Allen E. and Marilyn M. Puckett Professor of Mechanics and Materials, the senior author of the study. "The development of biodegradable polymers has once again brought us back to fundamental questions—why are some polymers tough, but others brittle? How do we make polymers resist tearing under repeated stretching?"
Polymer chains are made by linking together monomer building blocks. To make a material elastic, the polymer chains are crosslinked by covalent bonds. The more crosslinks, the shorter the polymer chains and the stiffer the material.
"As your polymer chains become shorter, the energy you can store in the material becomes less and the material becomes brittle," said Junsoo Kim, a graduate student at SEAS and co-first author of the paper. "If you have only a few crosslinks, the chains are longer, and the material is tough but it's too squishy to be useful."
To develop a polymer that is both stiff and tough, the researchers looked to physical, rather than chemical bonds to link the polymer chains. These physical bonds, called entanglements, have been known in the field for almost as long as polymer science has existed, but they've been thought to only impact stiffness, not toughness.
But the SEAS research team found that with enough entanglements, a polymer could become tough without compromising stiffness. To create highly entangled polymers, the researchers used a concentrated monomer precursor solution with 10 times less water than other polymer recipes.
"By crowding all the monomers into this solution with less water and then polymerizing it, we forced them to be entangled, like tangled strings of yarn," said Guogao Zhang, a postdoctoral fellow at SEAS and co-first author the paper. "Just like with knitted fabrics, the polymers maintain their connection with one another by being physically intertwined."
With hundreds of these entanglements, just a handful of chemical crosslinks are required to keep the polymer stable.
"As elastomers, these polymers have high toughness, strength, and fatigue resistance," said Meixuanzi Shi, a visiting scholar at SEAS and co-author of the paper. "When the polymers are submerged in water to become hydrogels, they have low friction, and high wear resistance."
Journal Reference:
Junsoo Ki, Guogao Zhang, Meixuanzi Shi, Zhigang Suo. Fracture, fatigue, and friction of polymers in which entanglements greatly outnumber crosslinks Science (2021). DOI: 10.1126/science.abg6320)
Dear 'Squid Game' fans, please stop calling the phone number shown in the series:
Netflix is to edit scenes of its hit series "Squid Game," after large numbers of viewers began dialing a phone number that appears in the production — much to the despair of those on the other end of the line.
The dystopian series sees hundreds of people who are experiencing the misery of financial ruin, invited to an undisclosed location where they play childhood games in a bid to win a billion-dollar-prize. The rules are clear: if they lose, they die.
When protagonist Ki-hun flashes his games invitation card, an 8-digit number is seen. That number, however, just so happens to belong to a South Korean woman who says she has been bombarded with calls and messages from strangers ever since the show first premiered.
"I've been unceasingly getting calls and texts 24/7 to the point where my daily life has become difficult," said Kim Gil-young, a dessert shop owner who has used the number for 10 years.
She explained that the flood of calls during the day and night was constantly depleting her cellphone battery.
[...] Netflix said on Wednesday: "Together with the production company, we are working to resolve this matter, including editing scenes with phone numbers where necessary."
Others who share similar phone numbers have also been experiencing the same woes as the woman from Seongju County in South Korea's North Gyeongsang Province.
Also at c|net and The Hollywood Reporter.
Scientists Create Strange Material That Can Both Move and Block Heat:
All activity generates heat, because energy escapes from everything we do. But too much can wear out batteries and electronic components—like parts in an aging laptop that runs too hot to actually sit on your lap. If you can't get rid of heat, you've got a problem.
Scientists at the University of Chicago have invented a new way to funnel heat around at the microscopic level: a thermal insulator made using an innovative technique. They stack ultra-thin layers of crystalline sheets on top of each other, but rotate each layer slightly, creating a material with atoms that are aligned in one direction but not in the other.
"Think of a partly-finished Rubik's cube, with layers all rotated in random directions," said Shi En Kim, a graduate student with the Pritzker School of Molecular Engineering who is the first author of the study. "What that means is that within each layer of the crystal, we still have an ordered lattice of atoms, but if you move to the neighboring layer, you have no idea where the next atoms will be relative to the previous layer—the atoms are completely messy along this direction."
The result is a material that is extremely good at both containing heat and moving it, albeit in different directions—an unusual ability at the microscale, and one that could have very useful applications in electronics and other technology.
"The combination of excellent heat conductivity in one direction and excellent insulation in the other direction does not exist at all in nature," said study lead author Jiwoong Park, professor of chemistry and molecular engineering at the University of Chicago. "We hope this could open up an entirely new direction for making novel materials."
Journal Reference:
Kim, Shi En, Mujid, Fauzia, Rai, Akash, et al. Extremely anisotropic van der Waals thermal conductors [open], Nature (DOI: 10.1038/s41586-021-03867-8)
Unruly passenger incidents rising again, FAA data shows:
FAA figures released Tuesday show more disruptions on commercial flights in the past week than any week in the past two and a half months.
The FAA says there were 128 new incidents reported by flight crews, bringing this year's total to 4,626 incidents. The new number is the highest weekly figure since the FAA started releasing weekly data on July 20.
About 72% of issues in the past week were over the federal transportation mask mandate, figures show.
[...] The agency has proposed more than $1 million in fines against unruly airline passengers this year.
One $45,000 fine announced in August was against a passenger accused of throwing his luggage at another passenger and, while lying on the aisle floor, "grabbing a flight attendant by the ankles and putting his head up her skirt."
Another passenger would not wear his face mask, the FAA, said, and "acted as though his hand was a gun and made a 'pew, pew' noise as if he was shooting a fellow passenger."
[...] Pekoske said 110 TSA officers have been assaulted this year.
Lots Of Talk About A Crackdown On America’s Air Rage Epidemic—But Not Enough Action:
Among the most egregious incidents: Last December, a Delta Air Lines passenger tried to open the cockpit door mid-flight and struck a flight attendant in the face before being restrained by crew members and a fellow passenger. On an Alaska Airlines flight in March, a Colorado man who refused to wear a face mask swatted at a flight attendant, then stood up and urinated in his seat area. In May, a Southwest Airlines passenger punched out a flight attendant’s teeth after being told to keep her seat belt fastened.
[...] The threat of four- and five-figure fines has not tamped down unruly behavior on planes. “Civil penalties alone are failing to deter criminal activity by airline passengers,” [...]
[...] The airline industry, meanwhile, says this is a job for the Department of Justice. “We believe that the United States Government is well equipped to prosecute unruly and disruptive onboard behavior,” [...]
What, if anything, should be done, or could improve the situation?
Twitch source code, creator earnings exposed in 125GB leak:
Live video broadcasting service Twitch has been hit by a massive hack that exposed 125GB of the company's data. In a 4chan thread posted (and removed) Wednesday, an anonymous user posted a torrent file of the multi-gig data dump. The dump contains the company's source code and details of money earned by Twitch creators.
In a 4chan post seen by Ars today, an anonymous user claimed to leak 125GB of data lifted from 6,000 internal Twitch Git repositories. The forum poster mocked Amazon's acquisition of Twitch, writing, "Jeff Bezos paid $970 million for this, we're giving it away FOR FREE."
The hacker wrote that the purpose of the leak was to cause disruption and promote competition among video streaming platforms. The hacker further said that Twitch's "community is a disgusting, toxic cesspool."
Twitch source code and creator payouts part of massive leak:
Twitch appears to have been hacked, leaking source code for the company’s streaming service, an unreleased Steam competitor from Amazon Game Studios, and details of creator payouts. An anonymous poster on the 4chan messaging board has released a 125GB torrent, which they claim includes the entirety of Twitch and its commit history.
The poster claims the leak is designed to “foster more disruption and competition in the online video streaming space.” The Verge is able to confirm that the leak is legitimate, and includes code that is as recent as this week. Video Games Chronicle first reported details on the leak earlier today.
Twitch has confirmed it has suffered a data breach, and the company says it’s “working with urgency to understand the extent of this.”
Over two feet of rain fell in Italy in only half a day, something not seen in Europe before:
Extreme, climate-fueled rainfall broke records this week in a part of Italy known for its rain and an area in Oman not known for rain at all.
On Monday, a series of storms put on the parking brakes over northwestern Italy, unleashing rainfall rates never before seen in all of Europe after over 29 inches (742 mm) of rain fell in just 12 hours. In Oman, a rare tropical cyclone dumped years' worth of rainfall, bringing deadly floods to the desert landscape that rarely sees much rain in an entire year.
[...] For some context, 36 inches is roughly equivalent to the average rainfall one would expect in Seattle in a year. It would take London an average of 15 months to tally such rainfall. Dozens had to be rescued after reports of mudslides and flooding dotted the landscape, leading a bridge to collapse in the town of Quiliano, according to Milan news outlet Corriere della Sera.
[...] Less than 2 days earlier and a little over 3,000 miles to the southeast, Cyclone Shaheen made landfall in far northern Oman with winds just shy of a Category 1 hurricane.
The storm drenched the normally parched city of Al Khaburah with over 14 inches (300 mm) of rainfall in a matter of hours, according to The Times of Oman.
New type of magnetism unveiled in an iconic material:
Since the discovery of superconductivity in Sr2RuO4 in 1994, hundreds of studies have been published on this compound, which have suggested that Sr2RuO4 is a very special system with unique properties. These properties make Sr2RuO4 a material with great potential, for example, for the development of future technologies including superconducting spintronics and quantum electronics by virtue of its ability to carry lossless electrical currents and magnetic information simultaneously. An international research team led by scientists at the University of Konstanz has been now able to answer one of the most interesting open questions on Sr2RuO4: why does the superconducting state of this material exhibit some features that are typically found in materials known as ferromagnets, which are considered being antagonists to superconductors? The team has found that Sr2RuO4 hosts a new form of magnetism, which can coexist with superconductivity and exists independently of superconductivity as well. The results have been published in the current issue of Nature Communications.
[...] The authors also developed a theoretical model suggesting the origin of this hidden surface magnetism. "Unlike for conventional magnetic materials whose magnetic properties originate from the quantum mechanical property of an electron known as spin, a cooperative swirling motion of interacting electrons, generating circulating currents at the nanometer scale, underlies the magnetism discovered in Sr2RuO4" states Dr Mario Cuoco from the CNR-spin who developed the theoretical model along with Dr Maria Teresa Mercaldo and other colleagues at the University of Salerno.
[...] The new type of magnetism discovered in Sr2RuO4 is essential to also better understanding the other physical properties of Sr2RuO4 including its unconventional superconductivity. The fundamental discovery may also lead to the search for this new form of magnetism in other materials similar to Sr2RuO4 as well as trigger new studies to better understand how such magnetism can be manipulated and controlled for novel quantum electronics applications.
Journal Reference:
Fittipaldi, R., Hartmann, R., Mercaldo, M. T., et al. Unveiling unconventional magnetism at the surface of Sr2RuO4 [open], Nature Communications (DOI: 10.1038/s41467-021-26020-5)
Largest mobile SMS routing firm discloses five-year-long breach:
Syniverse, a service provider for most telecommunications companies, disclosed that hackers had access to its databases over the past five years and compromised login credentials belonging to hundreds of customers.
Self-described as “the world’s most connected company,” Syniverse provides text messaging routing services to over 300 mobile operators, among them Vodafone, AT&T, T-Mobile, Verizon, America Movil, Telefonica, and China Mobile.
Syniverse is so big that it brags about having as its customers “nearly every mobile communications provider, the largest global banks, the world’s biggest tech companies.”
[...] In a filing on September 27 with the U.S. Securities and Exchange Commission (SEC) spotted by Motherboard journalist Lorenzo Franceschi-Bicchierai, Syniverse disclosed that an unauthorized party accessed on several occasions databases on its network.
When the company became aware of the intrusions in May 2021, an internal investigation began to determine the extent of the hack.
“The results of the investigation revealed that the unauthorized access began in May 2016,” the company reveals in the SEC filing.
For five years, hackers maintained access to Syniverse internal databases and compromised the login data for the Electronic Data Transfer (EDT) environment belonging to about 235 customers.
“All EDT customers have been notified and have had their credentials reset or inactivated, even if their credentials were not impacted by the incident. All customers whose credentials were impacted have been notified of that circumstance” - Syniverse
Also at Business Insider, Security Week, and Ars Technica
Raspberry Pi Launches New Website For Its Hardware
In a surprise move, Raspberry Pi today announced that a new website has been created to support Raspberry Pi devices, sales and documentation. This marks a change from a single website from 2011 which served both educational outreach and sales. Another change is Raspberry Pi's social media presence, with the original Raspberry Pi twitter account focusing on the hardware, and another representing the charity and educational outreach of the Raspberry Pi Foundation.
Raspberry Pi Trading and the Raspberry Pi Foundation have long been separate entities. Raspberry Pi Trading is responsible for the hardware engineering and sales of Raspberry Pi while Raspberry Pi Foundation is a charity that provides educational outreach such as learning resources and teacher outreach program "Picademy".
In two blog posts, one written by Liz Upton, executive director of communications for Raspberry Pi Trading, and another from Philip Colligan chief executive of the Raspberry Pi Foundation, we learn that the division is a necessary step as the user base grows and their requirements change. The new raspberrypi.com website aims to serve those interested in the Raspberry Pi hardware and software and provides documentation and links to resellers offering official Raspberry Pi boards and accessories.
Some posts from the RaspberryPi.org blog have been transferred to the RaspberryPi.com news page. The former blog focuses on the education mission while the news page has the project ideas, magazines, product announcements, and other news.
Raspberry Pi said yesterday it would be pushing to get its miniature computers into more shops across Africa, admitting that its presence on the continent was limited to a single approved reseller with commercial ops in a few countries in southern Africa.
Writing on the company blog, Ken Okolo said he had been recently appointed to focus on building a network of resellers and partnerships across industry and the education sector in Nigeria, Kenya, Ghana, Tanzania, Rwanda, Cameroon, and Uganda.
Previously Raspberry Pi was available through a South African reseller with "some commercial operations" in nearby countries, but the rest of the continent was vastly underserved, relying on e-commerce sites like Amazon and [Alibaba], and their high shipping rates, to dispatch the product from other parts of the globe.
According to Okolo, this burden "undermines [the] goal of ensuring affordability and availability across the continent."
Previously: Raspberry Pi Attracts $45m After Lockdowns Fuel Demand for PCs
Large scale solar parks cool surrounding land:
The team of scientists, from Lancaster University, Ludong University in China, and the University of California Davis in the USA focused on two large-scale solar parks located in arid locations -- the 300 MW Stateline solar park in California USA, and the 850 MW Longyangxia solar park in China.
The researchers used land surface temperature data derived from Landsat satellite images, an approach not previously applied to solar parks. This enabled the study team to compare the land surface temperatures around solar parks before and after the solar parks were constructed. The satellite data was supplemented by on the ground temperature measurements around Stateline solar park.
They found that the parks produced 'cool islands' extending around 700 metres from the solar park boundaries. The temperature of surrounding land surface was reduced by up to 2.3 ℃ at 100 metres away from the solar park, with the cooling effects reducing exponentially to 700 metres.
This new discovery is important as it shows the solar park could impact ecological processes, including productivity, decomposition, and ultimately the carbon balance, in the surrounding landscape. The scale of effect will depend on the location and could be positive, negative or inconsequential.
[...] The new findings therefore highlight the need for greater consideration to be given to where solar parks are built around the world, as well as their design, to minimise any negative impacts and boost positive effects.
Journal Reference:
Li Guoqing, Rebecca R Hernandez, George Alan Blackburn, et al.
Ground-mounted photovoltaic solar parks promote land surface cool islands in arid ecosystems Renewable and Sustainable Energy Transition [Open]
(DOI: 10.1016/j.rset.2021.100008)
Chronic Pain Treatment Should Include Psychological Interventions:
"There are several effective nonmedical treatments for chronic pain, and psychological treatments emerge among the strongest of these," said Mary Driscoll, a researcher at Yale University and first author on the issue's main article. "People who engage in psychological treatments can expect to experience meaningful reductions in pain itself as well as improvements in physical functioning and emotional well-being."
[...] Research has shown that psychological factors can play a role in the onset, severity, and duration of chronic pain. For those reasons, several psychological interventions have been shown to be effective in treating chronic pain.
In the article, Driscoll and her colleagues describe the interventions that have been most widely studied by the pain community, including:
- Supportive psychotherapy, which emphasizes unconditional acceptance and empathic understanding
- Relaxation training, or the use of breathing, muscle relaxation, and visual imagery to counteract the body's stress response
- Biofeedback, which involves monitoring patients' physiological responses to stress and pain (e.g., increased heart rate, muscle tension) and teaching them how to down-regulate these responses
- Hypnosis by a trained clinician, which may induce changes in pain processing, expectations, or perception and incorporates relaxation training
- Cognitive-behavioral therapy, in which patients learn to reframe maladaptive thoughts about pain that cause distress; change unhelpful behaviors, such as isolation and inactivity; and develop helpful behavioral coping strategies (e.g., relaxation)
- Mindfulness-based interventions, which help to disentangle physical pain from emotional pain via increased awareness of the body, the breath, and activity
- Psychologically informed physical therapy, which integrates physical therapy and cognitive-behavioral therapy
The PSPI [(Psychological Science in the Public Interest)] report also addresses topics such as integrated pain care, or the blending of medical, psychological, and social aspects of health care; the future of pain treatment; and improving the availability and integration of pain-management strategies.
Journal Reference:
Mary A. Driscoll, Robert R. Edwards, William C. Becker, et al. Psychological Interventions for the Treatment of Chronic Pain in Adults:, Psychological Science in the Public Interest (DOI: 10.1177/15291006211008157)