L article du dimanche sort de la routine quotidienne ...
L aissez moi exprimer mon desarroi quand je recois chaque jour de NEWLETTERS SCIENCE X une telle masse de publications scientiques ....
Vous en doutez ??
A lors laissez moi vous montrer ce que j ai reçu pour la seule journée d hier :
- ewsletter Science XExpéditeur :not-for-reply@physorg.comÀ :olivier hartmanshennsam. 28 sept. à 00:56
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Spotlight Stories Headlines
Nanotechnology news
Laser-induced graphene sensors made affordable with stencil masking
Researchers at the University of Hawaiʻi at Mānoa have unveiled a new technique that could make the manufacture of wearable health sensors more accessible and affordable.
Researchers crack a key problem with sodium-ion batteries for electric vehicles and grid energy storage
Lithium-ion batteries have long dominated the market as the go-to power source for electric vehicles. They are also increasingly being considered for storage of renewable energy to be used on the electric grid. However, with the rapid expansion of this market, supply shortages of lithium are projected within the next five to 10 years.
Bioengineers and chemists design fluorescent 3D-printed structures with potential medical applications
In a process as simple as stirring eggs and flour into pancakes, University of Oregon researchers have mixed fluorescent ring-shaped molecules into a novel 3D printing process. The result: intricate glowing structures that support the development of new kinds of biomedical implants.
Physics news
Orbital angular momentum monopoles discovery propels orbitronics forward in energy-efficient tech
Orbital angular momentum monopoles have been the subject of great theoretical interest as they offer major practical advantages for the emerging field of orbitronics, a potential energy-efficient alternative to traditional electronics. Now, through a combination of robust theory and experiments at the Swiss Light Source SLS at Paul Scherrer Institute PSI, their existence has been demonstrated. The discovery is published in the journal Nature Physics.
Exploiting quantum squeezing to enhance precision of measurements in systems with multiple factors
Quantum squeezing is a concept in quantum physics where the uncertainty in one aspect of a system is reduced while the uncertainty in another related aspect is increased.
Discovering quasiparticles ejected from color centers in diamond crystals
A research group led by University of Tsukuba has observed the cooperative behavior of polaron quasiparticles formed by the collective interaction of electrons and lattice vibrations around color centers in diamond crystals.
Accelerator lab provides detailed data on the 'magic' N=50 neutron shell closure
Researchers from the Department of Physics of the University of Jyväskylä (Finland) have found new information about the strength of the so-called magic neutron number 50 shell closure in the silver isotope chain.
Smashing heavy ions together could produce the world's strongest electric fields
Lab experiments around the globe that are gearing up to recreate the mysterious phase of matter found in the early universe could also produce the world's strongest electromagnetic fields, according to a theoretical analysis by a RIKEN physicist and two colleagues. This unanticipated bonus could enable physicists to investigate entirely new phenomena.
Nonlinear optical metasurface achieves electrically tunable third-harmonic generation
A recent study has unveiled a transformative nonlinear optical metasurface technology. This new technology, characterized by structures smaller than the wavelength of light, paves the way for significant advancements in next-generation communication technologies, including quantum light sources and medical diagnostic devices.
From branches to loops: The physics of transport networks in nature
An international team of researchers described how loops, crucial for the stability of such networks, occur in transport networks found in nature. The researchers observed that when one branch of the network reaches the system's boundary, the interactions between the branches change drastically. Previously repelling branches begin to attract each other, leading to the sudden formation of loops.
Research team succeeds in ultra-fast switching of tiny light sources
Extremely thin materials consisting of just a few atomic layers promise applications for electronics and quantum technologies. An international team led by TU Dresden has now made remarkable progress with an experiment conducted at Helmholtz-Zentrum Dresden-Rossendorf (HZDR): The experts were able to induce an extremely fast switching process between electrically neutral and charged luminescent particles in an ultra-thin, effectively two-dimensional material.
New upgrade will supercharge atomic vision of the world's most powerful X-ray laser
The Department of Energy (DOE) has given the green light for construction to begin on a high-energy upgrade that will further boost the performance of the Linac Coherent Light Source (LCLS), the world's most powerful X-ray free-electron laser (XFEL) at the DOE's SLAC National Accelerator Laboratory.
Inverse-design method enhances performance and reliability of on-chip spectrometers
In a study published in Engineering, researchers from Nanjing University of Aeronautics and Astronautics and Zhejiang University have unveiled a pioneering approach to designing on-chip computational spectrometers, heralding a new era of high-performance and reliable integrated spectrometers. This innovative inverse-design methodology offers a dramatic leap forward in spectrometer technology, addressing longstanding challenges in performance and reproducibility.
Earth news
Marine dust identifies 1.5 million year Oldest Ice near South America
Earth's climate has experienced major shifts over its billions of years of history, including numerous periods where ice proliferated across the planet. Today, ice cores can be a valuable resource for understanding these periods of Earth's history as they capture a snapshot of the climate at that time, both through geochemical constituents and entrained dust and debris preserved through millennia.
Ancient buried log offers evidence of biomass vaults as cheap way to store climate-warming carbon
A team of researchers with varied backgrounds at the University of Maryland, working with a colleague from Ministère de l'Agriculture, des Pêcheries et de l'Alimentation, in Canada, reports the viability of burying biomass as an inexpensive way to store climate-warming carbon.
Extreme El Niño events cause short-term CO₂ fluctuations, researchers find
A recent study challenges previous assumptions about the connection between CO₂ in the atmosphere and temperatures in the tropics. Between 1959 and 2011, the CO₂ content in the atmosphere responded twice as strongly to temperatures in the tropics than before.
Enhancing hurricane forecasts: Simulations reveal reducing estimates of atmospheric friction improves storm predictions
Hurricanes and other extreme weather events are expensive in lives and money. From 1980 to 2023, weather and climate disasters caused about $2.6 trillion in damages in the U.S., according to NOAA estimates. In 2022 alone, the U.S. experienced 18 disasters individually costing $1 billion or more. Worse, U.S. hurricanes from 2000 to 2021 took almost 2,000 lives. As climate change continues to intensify these storms, accurate forecasting becomes ever more crucial.
Drought reduces Amazon River in Colombia by as much as 90%: report
The Amazon River has seen its levels in Colombia reduced by as much as 90 percent, a government agency said Thursday, as South America faces a severe and widespread drought.
Hurricane leaves millions without power, four dead in southeast US
Hurricane Helene knocked out power for millions of customers across the southeast United States on Friday and left at least four dead after it slammed into the Florida coast.
Water flux recovers asynchronously after snow damage in subtropical forest, study shows
Forests play a crucial role in the global water cycle. However, only a few studies have investigated post-damage radiative forcing of evapotranspiration and its underlying processes in forests.
New approach reveals details about aerosol properties from hard-to-sample areas in the atmosphere
The spatial distribution of ambient aerosol particles plays a huge role in aerosol–radiation–cloud interactions; however, not enough sampling has been done from the atmospheric boundary layer and lower free troposphere. This leaves large gaps in predictions of anthropogenic changes in the atmospheric energy balance.
Addressing global water security challenges: New study reveals investment opportunities and readiness levels
Water scarcity, pollution, and the burden of waterborne diseases are urgent issues threatening global health and security. A recently published study in the journal Global Environmental Change highlights the pressing need for innovative economic strategies to bolster water security investments, focusing on the "enabling environment" that influences regional readiness for new business solutions.
Return to sender: Waste stranded at sea stirs toxic dispute
Amid the scorching heat at the Albanian port of Durres, 102 containers set sail for Thailand in early July, sparking a high-seas drama that highlighted the perils of the global waste trade.
Stay or go? Pacific Islanders face climate's grim choice
Rising waters are slowly but surely swallowing Carnie Reimers's backyard in the Marshall Islands, pushing her toward an agonizing choice: stay in the only home she's ever known or leave and face the prospect of becoming a climate refugee.
'I need to go': Floridians make final preparations for Hurricane Helene
Across the northern Florida coast, most small towns were deserted on Thursday, with stores closed and windows boarded up to protect against the high winds and potentially devastating storm surge of Hurricane Helene.
Some people insist the Tijuana River is poisoning them: Officials disagree
The Tijuana River should not be flowing this time of year. But throughout the dry season, it has—delivering millions of gallons a day of an unnatural mix of water, neon green sewage and industrial waste from Tijuana through the city of Imperial Beach to the Pacific Ocean.
Update to US precipitation frequency standards now accounts for climate trends
A key scientific NOAA resource on extreme precipitation that is widely used by floodplain managers, city planners, civil engineers, developers and communities across the nation will soon include climate trend data.
VXS-1 Squadron continues the mission, tracking potential tropical cyclone
U.S. Naval Research Laboratory (NRL) Scientific Development Squadron ONE (VXS) 1 takes to the skies to deploy observational buoys in front of Hurricane Helene's projected path on Tuesday, Sept. 24 providing real-time forecasts to the National Oceanographic Partnership Program (NOPP) Hurricane Coastal Impacts (NHCI) team for timely prediction and operational readiness.
Enhanced denitrification achieved with innovative biochar-based substrate under low carbon/nitrogen conditions
An study led by researchers from the Harbin Institute of Technology has unveiled a substantial development in wastewater treatment technology. Published in Engineering, the research introduces an innovative approach to improving denitrification in constructed wetlands (CWs) by utilizing a novel biochar-based substrate, known as β-cyclodextrin-functionalized biochar (BC@β-CD). This breakthrough addresses a critical challenge in wastewater treatment: optimizing nitrogen removal in conditions where traditional methods falter due to low carbon-to-nitrogen (C/N) ratios.
Green and digital transitions are putting environmental problems on the back burner, says study
The European Green Deal is a package of political initiatives to ensure that the EU reaches climate neutrality by 2050. Faced with this challenge, the parallel goals of the green and digital transitions are at the center of the European Commission's priorities, but are they compatible with each other?
Astronomy and Space news
Advanced data shed light on gravitational basins of attraction that shape the movement of galaxies
A new study has mapped out the gravitational basins of attraction in the local universe, offering fresh insights into the large-scale cosmic structures that shape the movement of galaxies. The study has been published in Nature Astronomy.
Earth to capture a 'second moon' this weekend, NASA says
Earth will capture a miniature, "second moon" this week, according to NASA scientists.
Ryugu samples call into question previous ideas about the formation of carbon-rich asteroids
Asteroid Ryugu possibly did not travel as far from its place of origin to its current near-Earth orbit as previously assumed. New research published in the journal Science Advances suggests that Ryugu was formed near Jupiter.
Study uncovers first evidence of a volcanic spatter cone on Mars
While working under Erika Rader, an assistant professor in the Department of Earth and Spatial Sciences at University of Idaho, a postdoctoral researcher identified a volcanic vent on Mars as a potential spatter cone and compared it to a spatter cone formed during the 2021 eruption of Fagradalsfjall in Iceland.
Study suggests moon may have been captured from space rather than formed from collision particles
Over six missions to the moon, from 1969 to 1972, Apollo astronauts collected more than 800 pounds of lunar rock and soil. Chemical and isotopic analysis of that material showed that it was similar to the rock and soil on Earth: calcium-rich, basaltic and dating to about 60 million years after the solar system formed.
Scientists begin testing space thruster that could boldly go where no one has gone before
Deep space exploration might no longer be confined to sci-fi after scientists began testing a rocket thruster which promises to boldly go further than ever before.
NASA's BioSentinel studies solar radiation as Earth watches aurora
In May 2024, a geomagnetic storm hit Earth, sending auroras across the planet's skies in a once-in-a-generation light display. These dazzling sights are possible because of the interaction of coronal mass ejections—explosions of plasma and magnetic field from the sun—with Earth's magnetic field, which protects us from the radiation the sun spits out during turbulent storms.
Another building block of life can handle Venus' sulfuric acid
Venus is often described as a hellscape. The surface temperature breaches the melting point of lead, and though its atmosphere is dominated by carbon dioxide, it contains enough sulfuric acid to satisfy the comparison with Hades.
Lunar dust dynamics: Unveiling the charging properties and particle behavior of Chang'e-5 samples in an electric field
A study published in Engineering has shed new light on the behavior of lunar regolith particles under the influence of an external electric field, a discovery that could revolutionize space exploration and lunar resource utilization. The research, conducted by a collaborative team of scientists from the Qian Xuesen Laboratory of Space Technology, Tsinghua University, and other institutions, focuses on the charging properties and particle dynamics of lunar samples brought back by China's Chang'e-5 mission.
Technology news
LiDAR-based system allows unmanned aerial vehicle team to rapidly reconstruct environments
Unmanned aerial vehicles (UAVs), commonly known as drones, have proved to be highly effective systems for monitoring and exploring environments. These autonomous flying robots could also be used to create detailed maps and three-dimensional (3D) visualizations of real-world environments.
Shape-morphing brain sensor adheres to curved surfaces for ultrasound neurostimulation
Transcranial focused ultrasound, a non-invasive technique to stimulate specific areas of the brain using high-frequency sound waves, could be a promising treatment strategy for many neurological disorders. Most notably, it could help to treat drug-resistant epilepsy and other conditions associated with recurrent tremors.
Untapped potential: Study shows how water systems can help accelerate renewable energy adoption
Stanford-led research reveals how water systems, from desalination plants to wastewater treatment facilities, could help make renewable energy more affordable and dependable. The study, published Sept. 27 in Nature Water, presents a framework to measure how water systems can adjust their energy use to help balance power grid supply and demand.
As LLMs grow bigger, they're more likely to give wrong answers than admit ignorance
A team of AI researchers at Universitat Politècnica de València, in Spain, has found that as popular LLMs (Large Language Models) grow larger and more sophisticated, they become less likely to admit to a user that they do not know an answer.
Organic supramolecular crystals with high hydrogen storage performance could enhance fuel-cell vehicle efficiency
Hydrogen is often seen as the fuel of the future on account of its zero-emission and high gravimetric energy density, meaning it stores more energy per unit of mass compared to gasoline. Its low volumetric density, however, means it takes up a large amount of space, posing challenges for efficient storage and transport.
Study highlights complex ocean conditions facing world's most powerful tidal turbine
The number of tidal power and other offshore renewable energy installations is set to grow significantly around the UK coastline over the coming decades.
Scientists develop novel digital encoding system using fluorescent pixels
A team of scientists has developed a novel digital encoding and data storage system based on a combination of microcapsules containing different luminescent dyes and phase change materials. This work represents an important step forward in the field and could be key to the development of complex encryption systems for different areas such as cybersecurity or anti-counterfeiting.
Google expert at antitrust trial says government underestimates competition for online ad dollars
Federal regulators who say Google holds an illegal monopoly over the technology that matches online advertisers to publishers are vastly underestimating the competition the tech giant faces, an expert hired by Google testified Thursday.
'Broken' news industry faces uncertain future
From disinformation campaigns to soaring skepticism, plummeting trust and economic slumps, the global media landscape has been hit with blow after blow.
EasyJet founder makes life hard for 'brand thieves'
Daring to prefix a company or even a pop group's name with "easy" could land you with legal action, as the founder of British airline easyJet relentlessly tackles alleged trademark breaches.
OpenAI discusses giving Altman 7% stake in for-profit shift
OpenAI is discussing giving Chief Executive Officer Sam Altman a 7% equity stake in the company and restructuring to become a for-profit business, people familiar with the matter said, a major shift that would mark the first time Altman is granted ownership in the artificial intelligence startup.
Clean energy transition: The impact of financial costs on the development of renewable energy sources
It is widely recognized that finance is one of the critical enablers of accelerating climate action. However, renewable energy deployment (particularly in developing countries) requires more financing than fossil fuel-based alternatives due to a combination of factors, such as higher upfront investment costs.
Amazon's $4 billion partnership with AI startup Anthropic gets UK competition clearance
Britain's competition watchdog said Friday that it's clearing Amazon's partnership with artificial intelligence company Anthropic because the $4 billion deal didn't qualify for further scrutiny.
Meta hit with $102 million privacy fine from European Union over 2019 password security lapse
Meta was punished Friday with a fine worth more than $100 million from the social media giant's European Union privacy regulator over a security lapse involving passwords for Facebook users.
Ex-'Apprentice' candidates dump nearly entire stake in owner of Trump's Truth Social platform
A Florida firm owned by former contestants on "The Apprentice" has disposed of nearly all its 5.5% stake in Trump Media & Technology Group, which owns former president Donald Trump's Truth Social platform.
US regulator urges safety checks on some Boeing 737 rudders
The US National Transportation Safety Board (NTSB) on Thursday issued "urgent safety recommendations" regarding the rudder systems on certain Boeing 737 aircraft, highlighting a risk of jamming.
X says complied with Brazil court orders, should be reinstated: source
Elon Musk's X social media platform has complied with orders from Brazil's Supreme Court and is asking for its suspension in the country to be lifted, a source close to the case told AFP on Thursday.
Spotlight on ultra-precision machining: Overcoming the challenges of processing silicon carbide single crystals
Silicon carbide (SiC) has emerged as a crucial material in the realm of high-end electronics, particularly for applications requiring high thermal conductivity, high hardness, and robust chemical stability. Its application extends to power electronics, high-temperature semiconductors, and cutting-edge devices.
Which is ecologically better: Concrete or plastic pipes?
On behalf of the FBS (Federal Association of Concrete Sewer Systems), Fraunhofer UMSICHT prepared a life cycle assessment of the environmental impact of wastewater pipes made of (steel) concrete. This also functions as an association environmental product declaration (EPD-Environmental Product Declaration) and is publicly accessible via the ÖKOBAUDAT database (in German).
New model advances understanding of stress–strain behavior in ultra-high-performance concrete
A recent study published in Engineering has unveiled a novel analysis-oriented stress–strain model that promises to improve the way engineers understand and design with ultra-high-performance concrete (UHPC) confined by fiber-reinforced polymers (FRP). This advancement in concrete research, led by S.S. Zhang, J.J. Wang, Guan Lin, and X.F. Nie, provides a deeper insight into the compressive behavior of FRP-confined UHPC, addressing a critical gap in current structural engineering models.
Novel recycling process for rare-earth elements could improve green technology and boost carbon neutrality
In a recent study published in Engineering, researchers from Kyoto University have unveiled a novel method for the efficient separation and recycling of rare-earth elements (REEs) from end-of-life magnets. This innovative process, known as the selective extraction–evaporation–electrolysis (SEEE) process, promises to significantly advance recycling technology and support global efforts towards carbon neutrality.
Chemistry news
High-energy-density cubic gauche nitrogen successfully synthesized at atmospheric pressure
A research group led by Prof. Wang Xianlong from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences, has successfully synthesized high-energy-density materials cubic gauche nitrogen (cg-N) at atmospheric pressure by treating potassium azide (KN3) using the plasma-enhanced chemical vapor deposition technique (PECVD).
Affordable iron catalysts offer a sustainable route to prized Z-alkenes
Chemists from the National University of Singapore (NUS) have developed an iron-catalyzed method that overcomes a significant challenge in the sustainable synthesis of trisubstituted Z-alkenes by inserting two alkyl chemical groups into a type of compound called allenes. The findings were published in the journal Nature Synthesis.
Fruit juice offers a fresh take on kombucha
Kombucha is a fizzy, tangy drink made by fermenting tea. But brewers are now fermenting other plant-based drinks to explore nutritional properties and flavors. In a study published in ACS Agricultural Science & Technology, researchers compared the biochemistry and flavor of kombucha with brews made from apple and passion fruit juices. They found that the apple beverage contained high levels of bioactive compounds called flavonoids and ranked highly among taste testers, signaling its promise as a kombucha alternative.
Chemical engineers provide new insights in CO₂ conversion with electricity
Researchers from the Department of Chemical Engineering at the University of Twente, led by Georgios Katsoukis, have discovered how the chemical environment around copper electrodes can dramatically influence the conversion of carbon dioxide (CO₂) into formate. This discovery can help improve the selectivity in CO₂ reduction reactions, offering new insights into how to control these processes more effectively.
Machine learning accelerates discovery of high-temperature alloys
In a study recently published in Engineering, scientists from the University of Science and Technology Beijing, Guangdong Ocean University, and AiMaterials Research LLC have demonstrated a novel method to accelerate the discovery of refractory high-entropy alloys (RHEAs) compositions optimized for extreme conditions.
Biology news
Scientists identify structural basis of stitched-together protein complexes that recycle most proteins in cells
Scientists at Sanford Burnham Prebys have developed a clearer picture of how crucial machinery in the human cell's recycling process for obsolete and misshapen proteins—known as proteasomes—are formed.
Sloth survival under threat due to climate change, study finds
A new PeerJ study has revealed that sloths, the famously slow-moving creatures of Central and South America, may face existential threats due to climate change. The research, conducted by scientists studying the metabolic response of sloths to rising temperatures, suggests that the energy limitations of these animals could make survival untenable by the end of the century, particularly for high-altitude populations.
Wall lizards shed light on how animals prevent harm in territorial disputes
A study appearing in Behavioral Ecology shows that in male wall lizards, certain behaviors have a greater influence on the way they resolve territorial disputes than their size and coloration.
Warming climates quicken aging-related mortality in mosquitoes, study finds
Mosquitoes tread a thinning line in warming climates, where aging accelerates and infections intensify. New research shows that warming and aging act as a one-two punch, lowering mosquito lifespans and fanning the flames of bacterial infections. These findings highlight how climate change could alter the risks of disease spread by mosquitoes.
Marine debris removal benefits Hawaiian monk seals and ecosystems
Endangered Hawaiian monk seals and other marine life have benefitted from 25 years of large-scale marine debris removal in the Northwestern Hawaiian Islands (NWHI), according to the cover story in the current issue of Science.
Scientists uncover structural secrets of antiepileptic drugs
RIKEN researchers have discovered how the structure of drugs for treating epilepsy allows them to interact with a key protein found in synapses at the junctions of neurons. This knowledge could help to design even better drugs for the condition.
How a protein keeps gene clusters quiet in the cell nucleolus
In a discovery that sheds light on the complex mechanisms of gene regulation, scientists at EPFL have uncovered a critical role for the protein ZNF274 in keeping certain gene clusters turned off by anchoring them to the cell nucleolus. The study is published in Science Advances.
Seal species carries 'genetic scars' after being hunted to the edge of extinction, new research reveals
Northern Elephant seals have staged a remarkable comeback after narrowly escaping extinction by hunting, but new research reveals lasting genetic effects in the present population.
Scientists use drones to track white sharks along California beaches
The forecast at the beach today is cloudy, with a chance of sharks. At least, that's the forecast that researchers at UC Santa Barbara would like to be able to provide. They're leading a project to predict when and where great white sharks show up near a beach.
Forest loss forces langur species to interbreed, study shows
Research shows a threatening development for two endangered primate species in Bangladesh: Phayre's langurs (Trachypithecus phayrei) and capped langurs (Trachypithecus pileatus). In mixed groups of these two species, hybrids have been found and genetically confirmed. If hybridization continues, it could mean the extinction of one or both species.
On remote Greek island, migratory birds offer climate clues
Gently holding a blackcap warbler in his palm, ornithologist Christos Barboutis blew on its feathers to reveal the size of its belly: a good indicator of how far the bird can migrate.
Soil volatile organic compound profiles show promise for evaluating soil health in soybean fields
Maintaining soil health is crucial for sustainable agriculture. Recently, soil volatile organic compounds (VOCs) have emerged as promising indicators for assessing soil health. A new study aimed to evaluate the effectiveness of soil VOC profiles as indicators of soil health in soybean fields.
How iron and metabolic constraints can aid gene discovery for photosynthesis and biofuel production
The single-cell green alga Chromochloris zofingiensis is an emerging model organism for photosynthesis and metabolism research. Previous research has shown that with the addition of glucose, Chromochloris zofingiensis shuts off photosynthesis, reroutes its metabolism, and accumulates high amounts of lipids (biofuel precursors) and astaxanthin (a high-value antioxidant).
The biological marvels of the seabed are being mined to create commercial products—here are the risks
Thousands of genes from deep-sea marine life are being used to create new commercial products ranging from pharmaceuticals to cosmetics. Genes are segments of DNA that provide instructions for making other molecules that are essential for the structure and function of living organisms.
Climate change accelerates vulnerability and loss of resilience of a key species for the Mediterranean ecosystem: Study
A study by the University of Barcelona has analyzed the ability of red gorgonians (Paramuricea clavata), a key species for the Mediterranean marine ecosystem, to resist and recover after marine heat waves.
Elucidating the mechanism of cell division during plant self-healing
When the stem of a plant is injured, the surrounding cells proliferate to repair and fuse the damaged tissue, eventually restoring function. This self-healing property is utilized in grafting techniques to propagate fruit and vegetable plants.
Plant lineage study provides insights into the ecological and evolutionary effects of different reproductive strategies
Hang Sun's group from Kunming Institute of Botany, Chinese Academy of Sciences has demonstrated the ecological and evolutionary effects of changes in plant reproductive strategies on phylogenetic evolution. The study is published in the journal Science China Life Sciences.
'Remarkable' marine animal forests found around Wellington's coast in central New Zealand
Marine animal forests rich in sea life have been found in the shallow waters around Te Whanganui-a-Tara Wellington.
Multi-state study offers recommendations for keeping bermudagrass greener all season
Whether it's a football field, a golf course, or a home lawn, a new multi-state study offers recommendations for keeping some varieties of turfgrass greener, longer.
Trimer complex TaNF-Y balances grain yield and quality in wheat: Study
Breeding efforts have focused intensively on improving grain yield and quality in wheat (Triticum aestivum L.). Content and composition of grain starch and seed storage protein (SSP) are two critical factors that determine grain yield and quality. Starch content is closely related to grain weight, while SSP content and composition directly affect the quality of flour. However, there is often a negative correlation between SSP content (quality) and starch content (grain yield).
How climate change affects deer—experts draw findings from 20 years of research
Temperature, rainfall, snow and extreme weather events are all factors linked to climate change that directly affect wildlife. Understanding the impact of these factors on the physiology, population dynamics and distribution of different deer species is important for monitoring and protecting them.
Plan to overturn commercial whaling moratorium sinks in Peru
A four-decade-old moratorium on commercial whaling will remain in force after a proposal to overturn it was withdrawn Thursday at a meeting of the International Whaling Commission (IWC) in Peru's capital Lima.
Ailing New Zealand butterfly collector gives away life's work
A New Zealand enthusiast spent half a century amassing one of the world's largest private butterfly collections. As death nears, he has handed this life's work of 20,000 specimens to a museum.
Exploring the role of hydrogen sulfide in the expression of iron uptake genes in E. coli
Antibiotic resistance and oxidative stress response are important biological mechanisms that help bacteria thrive, especially pathogenic bacteria like Escherichia coli. Hydrogen sulfide (H2S), a chemical messenger molecule, regulates several intracellular activities in bacteria such as responses to oxidative stress and antibiotics.
Medicine and Health news
How changes in risk factors may be contributing to growing number of babies born prematurely
Preterm births have increased by more than 10% over the past decade, with racial and socioeconomic disparities persisting over time, according to a new study analyzing more than five million births.
Study finds estrogens play a hidden role in cancers, inhibiting a key immune cell
Estrogens are known to drive tumor growth in breast cancer cells that carry its receptors, but a new study by Duke Cancer Institute researchers unexpectedly finds that estrogens play a role in fueling the growth of breast cancers without the receptors, as well as numerous other cancers.
Mouse study explores how nerve cells repair themselves
New mouse model research led by scientists at The Ohio State University Wexner Medical Center, College of Medicine and Imperial College London explored how nerve cells repair themselves, which could lead to new treatments for nerve injuries.
Growing up with a dog may be good for your gut health, study finds
Dog lovers can attest to the range of benefits that come with having a canine companion, but improved gut health likely isn't one of them.
Multiple surgeries could contribute to cognitive decline in older people
Multiple surgeries could lead to cognitive decline, a University of Sydney study has found, using data from the United Kingdom's Biobank to analyze half a million patients aged 40 to 69 and followed over 20 years of brain scans, cognitive tests and medical records.
Research reveals mechanism of effector-triggered immunity
A pair of studies examining immune response in C. elegans reveal broad implications for understanding pathogen detection in higher animals and the evolutionary origins of immunity itself.
Fiber photometry technique finds serotonin levels in brain increase with reward value
Serotonin is often referred to as the "happiness molecule." It plays a critical role in affecting mood levels and is also a neurotransmitter that sends signals within the brain and the body.
A chain of intergenerational violence: Study finds link between adverse childhood experiences and elder abuse
New research shows the connection between adverse childhood experiences (ACEs), such as physical or emotional abuse, and an increased risk of people growing up to be abusive against older generations. While generational trauma is known to be passed down from parent to child, the study showed that it can also reverberate upwards from parent to older generations.
Treatments that maintain the health of synapses may help prevent, mitigate the symptoms of prion disease
Genetic prion disease generally manifests with cognitive difficulties, poor muscle control and abrupt jerking movements of muscle groups and/or entire limbs. The three major phenotypes of genetic prion disease are genetic Creutzfeldt-Jakob disease (gCJD), fatal familial insomnia (FFI), and Gerstmann-Sträussler-Scheinker (GSS) syndrome. The most common cause of inherited prion diseases is the E200K mutation of the prion protein (PrP). It is often thought that this mutation causes disease by making PrP more susceptible to misfolding into a pathogenic shape (PrPSc).
Strategy to combat breast cancer involves two-pronged attack on enzyme that 'feeds' tumor
A study led by Brazilian researchers and reported in an article published in the journal Nature Communications proposes that simultaneously targeting the enzyme glutaminase and the protein HuR, both of which are essential to tumor progression, may be effective in treating breast cancer.
Commonly used drug could transform treatment of rare muscle disorder
Lamotrigine, a drug commonly used to treat epilepsy and certain mood disorders, has been shown to be an excellent treatment option for a rare genetic neuromuscular disease known as non-dystrophic myotonia, in a world-first trial led by University College London researchers.
Two proteins involved in centrosome function linked to congenital developmental disorders
Centrosomes are small structures in cells with many essential functions, including roles in cell signaling and in organizing a cell's cytoskeleton. Centrosome dysfunction contributes to diseases like cancer and congenital developmental disorders—for which understanding what regulates centrosome function is key.
Automatic speech recognition learns to understand people with Parkinson's disease—by listening to them
As Mark Hasegawa-Johnson combed through data from his latest project, he was pleasantly surprised to uncover a recipe for Eggs Florentine. Sifting through hundreds of hours of recorded speech will unearth a treasure or two, he said.
Clinical cancer research in the US is increasingly dominated by pharmaceutical industry sponsors, study finds
Researchers at Fred Hutch Cancer Center identified a substantial increase over the past decade in the proportion of patients with cancer in the U.S. who participate in pharmaceutical industry sponsored clinical trials compared to those conducted with federal government support.
Researchers discover what hinders DNA repair in patients with Huntington disease
Researchers with McMaster University have discovered that the protein mutated in patients with Huntington disease doesn't repair DNA as intended, impacting the ability of brain cells to heal themselves.
Two studies find SARS-CoV-2 virus becoming resistant to antiviral drugs used to treat patients
Two studies have found that the virus that causes COVID-19 is becoming resistant to two drugs used to treat patients with infections.
Parents open to firearms counseling from doctors: Ensuring secure storage remains a challenge
Firearms are the leading cause of death in children in the United States and are linked to over half of youth suicides. Secure storage of firearms (stored locked, unloaded, and separate from the ammunition) can significantly decrease the rates of child and adolescent firearm-related suicides.
Children in foster care with disabilities face significant challenges, research reveals
Children with disabilities in foster care are extremely vulnerable, facing risks of maltreatment and removal from their homes and greater need for health care services. New research suggests that children with specific disabilities in foster care are less likely to find a permanent home and have a higher risk of mortality while in care compared to those without disabilities.
Firearm injuries lead to more complications, greater risk of death and higher inpatient costs than other injuries
Children who are injured by firearms require significantly more inpatient care, have higher medical complication rates and face a greater risk of death than children with other forms of trauma, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition in Orlando, FL.
Dangerous practice 'chroming' featured in videos on social media platform popular among youth
A resurgence of youth seeking a high from "chroming"—the act of inhaling toxic fumes from household items such as nail polish or permanent markers—could be due to videos featuring the practice on the popular social media platform, TikTok, according to new research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition.
Children's emergency department visits for heat-related illnesses increased 170% over past decade
The number of children who sought treatment at emergency departments for heat-related illnesses increased by 170% from 2012–2023 at two large children's hospitals, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition in Orlando, FL.
Naloxone successful in over half of uses in reversing signs of opioid overdose in the prehospital setting
The opioid epidemic is a leading cause of morbidity and mortality in the United States, and it is increasingly impacting children and teenagers. Naloxone can reverse the effects of opioid overdose and is being used in hospitals and by emergency responders outside the hospital to save the lives of young people poisoned by opioids.
Low vitamin D levels in pediatric patients linked to slow healing process
Low levels of Vitamin D can impact the healing of fractures in children, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition at the Orange County Convention Center from Sept. 27-Oct. 1.
Study reveals caregivers underestimate suicide as the leading cause of firearm death
A study found fewer than one in four Colorado residents living with children at home recognized suicide as the leading cause of firearm death and less than half thought suicide can be prevented, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition.
Water-absorbing beads pose increasing hazard for young children: Researchers test methods on how to shrink them
Water-absorbing beads have become increasingly hazardous to children over the past 10 years, as children who swallow the beads can experience life-threatening problems such as bowel obstruction.
Period poverty research finds 1 in 3 teens lack access to menstruation products
One in three adolescents who have visited a pediatric emergency department report difficulties in accessing menstruation products, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition at the Orange County Convention Center from Sept. 27–Oct. 1.
Racial disparities found to exist in emergency department treatment of children with unintentional ingestions
Unintentional injuries like falls, drownings and poisonings are the leading cause of death in patients ages 1–4, and a significant portion of these deaths are linked to unintentional ingestion—such as swallowing a drug or poison. New research shows racial and socioeconomic disparities exist in the emergency management of unintentional ingestions in children.
Study finds asthma rates lower in children who received only breast milk at birth hospital
Infants who were exclusively fed breast milk during their hospitalization at birth were 22% less likely to develop asthma in early childhood, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition in Orlando.
Babies born after fertility treatment have higher risk of heart defects, results suggest
The risk of being born with a major heart defect is 36% higher in babies who were conceived after assisted reproductive technology, such as in vitro fertilization (IVF), according to results of a very large study published in the European Heart Journal.
Australia sees surge in mpox cases
Australia has seen a rapid rise in mpox cases in the past three months, with one health expert concerned that low vaccination rates could be driving a spike outside cities.
Childhood vaccination coverage found to be lower for children born in 2020, 2021
Children born in 2020 to 2021 had lower coverage with nearly all childhood vaccines recommended by age 24 months than those born in 2018 and 2019, according to research published in the Sep. 26 issue of the U.S. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report.
Melanoma risk increased after radioactive iodine treatment for primary thyroid cancer, study finds
Patients with primary thyroid cancer who receive radioactive iodine therapy have an elevated risk for melanoma and other nonkeratinocyte skin cancers when limiting the cancer site to the head and neck, according to a study published online Sept. 19 in JAMA Network Open.
Disparities found for Non-Hispanic Black patients in hematopoietic cell transplantation use for hematologic cancers
Non-Hispanic Black patients in the United States appear to have persistent disparities in terms of hematopoietic cell transplantation (HCT) for various hematologic cancers, according to a study published online Sept. 18 in JAMA Network Open.
How a Colorado Parkinson's group uses climbing to help stave off effects of the disease
For 12 years, Paul Stroud's done everything he can to combat the effects of Parkinson's disease. He had a pair of stimulators implanted deep in his brain. He takes the standard medications to treat symptoms. He even briefly tried out tai chi.
FDA approves new kind of drug for schizophrenia
The first new type of medication in decades to help fight against schizophrenia was approved on Thursday by the U.S. Food and. Drug Administration.
Poor teen friendships predict adult anxiety and depression symptoms
A19-year study at the University of Virginia is revealing what may lead some young adults to suffer from debilitating depression and anxiety.
Will people accept a fentanyl vaccine? Interviews draw thoughtful responses
In 2022, more than 100,000 people died from opioid overdoses in the U.S., according to the National Center for Health Statistics. Roughly three quarters of these deaths involved fentanyl, a highly potent synthetic opioid.
'Undetectable' HIV patients could hold key to treatments
A rare group of HIV-positive people who maintain undetectable levels of the virus in their blood without medication could hold the key to new therapies for others living with the disease, says a leading genome expert.
Synaptic strength found regulate sleep quantity and quality
Sleep deprivation typically results in longer and deeper sleep, thereby maintaining overall sleep quantity and quality through homeostatic regulation. However, the specific mechanisms by which the brain monitors and controls sleep homeostasis remain unclear.
Molecular tumor boards improve identification of cancer-linked genes
Results from a new University of Kentucky Markey Cancer Center study show that molecular tumor boards can play an important role in identifying potential inherited cancer risks, leading to better patient care.
Substance abuse researcher discusses teen vaping crisis
Teen vaping has surged to alarming levels, making e-cigarettes the most popular nicotine product among U.S. adolescents. According to the Center for Disease Control and Prevention, 4.6% of middle school and 10% of high school students, or 2.1 million students, used e-cigarettes in 2023.
New intervention to protect lungs during cardiac surgery, feasible, safe, and effective, study finds
A new intervention which keeps lungs regularly expanding when using a heart-lung machine during heart valve surgery might protect lung function and exercise capacity in adult patients after the operation, a University of Bristol-led clinical trial has found.
Why do we yawn when we see someone else yawn?
After a hearty lunch at work, you and your co-workers go into a meeting. First one colleague starts to yawn, then a second and finally it's your turn. Many biological explanations have been put forward for this, but what is the scientific consensus?
Treatment for chronic rhinitis yields significant clinical improvements
Neurent Medical, a company developing non-surgical interventions to treat chronic inflammatory sinonasal diseases, has released positive six-month results from the PARAGON clinical study in Ear, Nose & Throat Journal.
Vape residue may harm unborn babies, mouse study suggests
Exposure to vape and e-cigarette residue on surfaces while pregnant could put unborn babies at risk of immune system damage, new research suggests.
Study finds large variation in how girls grow after their first period
There is unexpectedly large variation in height growth in girls after their first period. Every second girl grows either more or less in length than the 6–8 centimeters that is considered standard. This has been shown in a study conducted at the University of Gothenburg.
Mathematical model identifies effective drug combinations for non-small-cell lung cancer
Houston Methodist researchers have developed an advanced mathematical model that predicts how novel treatment combinations could significantly extend progression-free survival for patients with non-small-cell lung cancer (NSCLC), the most common type of lung cancer.
Circadian rhythm disruption linked to lung inflammation
In a study published in the journal Frontiers in Immunology, researchers at the University of Arizona Health Sciences Center for Sleep, Circadian and Neuroscience research have explored the effects of circadian rhythm disruption on the lungs. They have found that nearly every cell in the body is keeping track of time.
Meta-analysis explores relationship between gender nonconformity and mental health
New research from the Institute of Psychiatry, Psychology & Neuroscience (IoPPN) at King's College London, in partnership with Sichuan University, Chengdu, has found that people that show traits and behaviors that differ from gender stereotypes may be at greater risk of a range of common mental health difficulties, including anxiety, depression and low self-esteem.
Exploring how melanin influences clinical oxygen measurements
Obtaining accurate clinical measurements is essential for diagnosing and treating a wide range of health conditions. Regrettably, the impact of skin type and pigmentation is not equally considered in the design and calibration of non-invasive oxygen-monitoring medical technology.
Study reveals critical role of tRNA modifying enzyme in brain function
A study conducted by a research team from Kumamoto University has shed light on the critical role of a tRNA methylation enzyme, TRMT10A, in supporting brain function. The findings reveal how the absence of TRMT10A leads to a reduction in specific transfer RNA (tRNA) levels, disrupting protein synthesis in the brain and impairing synaptic structure and function.
Immune cell analysis helps improve monitoring of rejection risk in kidney transplants
Currently, kidney transplantation is the most effective treatment to ensure survival and improve the quality of life of patients with end-stage chronic kidney disease, and it is widely practiced in health care systems. However, the monitoring of transplant patients and markers of tolerance to the transplanted organ remain limited.
Ziresovir reduces signs, symptoms of bronchiolitis in babies with RSV
For infants and young children hospitalized with respiratory syncytial virus (RSV) infection, ziresovir reduces signs and symptoms of bronchiolitis, according to a study published in the Sept. 26 issue of the New England Journal of Medicine.
Large difference in survival seen for preemies born at 25 versus 22 weeks
For infants born prematurely, survival increases considerably for those born at 25 versus 22 gestational weeks, according to a study published online Sept. 26 in Pediatrics.
Cognitive behavioral therapy program aids insomnia in breast cancer survivors
An in-home, voice-activated cognitive behavioral therapy (CBT) program improves insomnia symptoms among breast cancer survivors, according to a study published online Sept. 24 in JAMA Network Open.
Omitting biopsy with negative MRI reduces detection of clinically insignificant prostate cancer: Study
Omitting biopsy in patients with negative magnetic resonance imaging (MRI) results is associated with a significantly reduced relative risk for detecting clinically insignificant prostate cancer, according to a study published in the New England Journal of Medicine.
Childhood opioid prescription rates vary by patient's background, research finds
Children born to greater socioeconomic backgrounds are significantly more likely to be prescribed opioids, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition at the Orange County Convention Center from Sept. 27–Oct. 1.
Study finds opioid poisoning in children increasing alongside adult misuse
The impacts of the ongoing opioid crisis are trickling down to young children, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition at the Orange County Convention Center from Sept. 27–Oct. 1.
Black infants with heart abnormalities more likely to die in first year, research finds
Some babies are born with abnormalities involving the structure of the heart, known as congenital heart disease (CHD). While many studies have shown that more babies with congenital heart disease are surviving past their first birthday as deaths from CHD have significantly decreased in the United States, a research abstract found that race impacts these survival rates.
Research shows social media used to facilitate sexual assault in children
About 7% of more than 1,000 teens who disclosed sexual abuse at a California hospital reported that social media was used to facilitate the assault, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition.
Racial justice activism, advocacy found to reduce depression, anxiety in some teens
Black and LatinX teenagers enrolled in an eight-week racial justice activism program reported fewer symptoms of depression and anxiety, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition in Orlando, FL.
Firearm laws restricting large-capacity magazines found to be effective in reducing child deaths in mass shootings
The only firearm restrictions found to be effective in reducing mass shootings involving children were laws banning the sale of firearms equipped with a large-capacity magazines, according to a new analysis presented during the American Academy of Pediatrics 2024 National Conference and Exhibition.
New center for organ donors is first of its kind in Illinois
Tucked away behind unassuming double doors on the fifth floor of Rush University Medical Center sits a new, very different type of medical unit.
On campaign trail, Vance lays out 'concept of a plan' for health care
Republican vice presidential nominee JD Vance's plan to rework President Barack Obama's signature health care law is vague on details, but many conservative health care experts say it would take the Republican Party back to a place it doesn't want to go.
Esketamine shows promise for treatment-resistant depression
An estimated one-third of patients with major depressive disorder have treatment-resistant depression (TRD), characterized by an inadequate response to two or more oral antidepressants (OADs).
Nations vow to cut deaths from drug resistant bacteria
World leaders meeting in New York have backed a new set of goals and pledged to find US$100 million in funding to address the problem of drug-resistant bacteria, a global crisis that is all the more acute in the poorest countries.
Other Sciences news
How large language models are changing collective intelligence
Within teams, organizations, markets and online communities, ideas from a larger group can help to solve complex problems. Large language models (LLMs) are emerging as powerful tools to unlock even greater potential. Picture an online forum where thousands of voices contribute to a solution, and an LLM synthesizes these diverse insights into a cohesive, actionable plan.
New food safety rules may cost small and mid-sized businesses big money
A newly published study by researchers at the University of Massachusetts Amherst estimates that it can cost small and mid-sized food producers tens of thousands of dollars to meet new food safety standards that prescribe proactive measures to ensure the safety of the U.S. food supply. The research is the first to assign an estimated dollar amount to compliance.
Anti-bullying, sexual harassment resources increase in US schools but gaps remain
While violence prevention education has increased in U.S. schools, only one in 10 schools today require violence prevention discussions in class, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition at the Orange County Convention Center.
Can twins make independent decisions while following identical career paths? Research explores 'individuality'
Cassandra Dean and Alexis Dean are fourth-year students with much in common. They are fraternal twins who enrolled at Northeastern University together.
Study reveals which men may be more likely to commit sexual assault
She swiped right and wants to meet up. Soon, you've both had a few drinks and dim the lights. Suddenly, the mood shifts: She pulls back, puts a hand up, even says no.
Teacher strikes are effective in increasing wages, working conditions, study finds
A detailed study of more than 770 teacher strikes in the United States between 2007 and 2023 found that the strikes benefit teachers and classrooms, and have no measurable impact on students.
Expert discusses authoritarian tactics in the 2024 US presidential campaign
The heated 2024 U.S. presidential election is frequently characterized as a choice between democracy and dictatorship, or democracy and autocracy, especially with the publication of Project 2025, the extreme, far-right playbook supposedly written for a Donald Trump or other Republican administration.
Populist radical right politics moving to mainstream in Europe, study finds
A novel study from the Center for Britain and Europe (CBE) highlights a significant shift in the political landscape of Europe, revealing that populist radical right (PRR) politics is moving from the fringes to the heart of mainstream political discourse.
Gambling marketing and the Premier League—the continued failure of industry self-regulation
New research reveals gambling messages during the opening weekend of this season's football Premier League have almost trebled since last year, putting fans including children at risk.
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Existe il pléthor de publications scientifiques ???
Certians le pensent mais l opinion est partagée ;
1/
Peer-review et publications scientifiques : définition et limites
Bon Pote
https://bonpote.co
2/
Pourquoi je ne publie(rai) plus (jamais) dans des revues ...
OpenEdition Journals
https://journals.openediti
3/
Contre les prix trop élevés d'accès aux publications, les ...
Le Temps
https://www
4/''Publish or perish !!!''
Publish or perish? - Understanding Science
University of California, Berkeley
https://undsci.berkeley.edu › ... ›
ETC
XXXXX
Cela me rappelle une conversation avec CLAUDE FREJACQUES mon chef au CEA a qui je venais demander soutien pour un procédé nouveau de séparation isotopique de l uranium que je voulais faire breveter :'' Règle n° 1 ne pas se décourager ;quand les résultats seront verifiés leur évidence les fera émerger !''
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