- ScienceDaily
- 20/8/25 22:52
Using properties of light from fluorescent probes is at the heart of a new imaging technique that allows for an unprecedented look inside cell membranes.
327 articles from TUESDAY 25.8.2020
Using properties of light from fluorescent probes is at the heart of a new imaging technique that allows for an unprecedented look inside cell membranes.
Researchers have upgraded a key computer code for calculating forces acting on magnetically confined plasma in fusion energy experiments. The upgrade will help scientists further improve the design of breakfast-cruller-shaped facilities known as stellarators.
When UC Santa Barbara materials scientist Omar Saleh and graduate student Ian Morgan sought to understand the mechanical behaviors of disordered proteins in the lab, they expected that after being stretched, one particular model protein would snap back instantaneously, like a rubber band.
New research provides the first-ever, atomic-level, 3D structure of the largest protein complex (complex I) involved in the plant mitochondrial electron transport chain. The results could unlock new advances in agriculture.
With over 170,000 COVID-19 deaths to date, and 1,000 more each day, America's life expectancy may appear to be plummeting. But in estimating the magnitude of the pandemic, demographers have found that COVID-19 is likely to shorten the average US lifespan in 2020 by only about a year.
When researchers sought to understand the mechanical behaviors of disordered proteins in the lab, they expected that after being stretched, one particular model protein would snap back instantaneously, like a rubber band. Instead, this disordered protein relaxed slowly, taking tens of minutes to relax into its original shape -- a behavior that defied expectations, and hinted at an inner structure...
A new article looks at the use of virtual imaging trials in effective assessment and optimization of CT and radiography acquisitions and analysis tools to help manage the coronavirus disease (COVID-19) pandemic.
All plants and animals respire, releasing energy from food. At the cellular level, this process occurs in the mitochondria. But there are differences at the molecular level between how plants and animals extract energy from food sources. Discovering those differences could help revolutionize agriculture.
Researchers at the National Institute of Standards and Technology (NIST) have produced synthetic gene fragments from SARS-CoV-2, the virus that causes COVID-19. This material, which is non-infectious and safe to handle, can help manufacturers produce more accurate and reliable diagnostic tests for the disease.
Link: What We StudyCategory: Space Experiments
Audiences shown a video about coral reefs had less willingness to pay (WTP) for conservation than when shown a slideshow of texts and photographs. The findings suggest the importance of the type and amount of information used in science communication.
A new scientific study has revealed unique life strategies of two major groups of microbes that live below Earth's surface. A publication in Frontiers in Microbiology reports that these groups, originally thought to rely on symbiotic relationships with other organisms, may also live independently and use an ancient mode of energy production.
A new study published this week in the journal Proceedings of the National Academy of Sciences documents dietary shifts in herbivores that lived between 1-3 million years ago in Ethiopia's Lower Omo Valley. The research team, led by Enquye Negash, a postdoctoral researcher in the George Washington University Center for the Advanced Study of Human Paleobiology, examined stable isotopes in the...
Tropical Storm Laura strengthened to a hurricane in the morning hours of Aug. 25, and NASA provided infrared imagery that showed the structure, temperature and rainmaking capabilities of the storm. When NASA's Terra satellite and NASA-NOAA's Suomi NPP satellite passed overhead, both provided different images of Laura as it was about to exit the Caribbean Sea and move into the Gulf of Mexico.
The first few weeks of a tree seedling's life can be the most precarious.
For the first time, researchers have designed a fully connected 32-qubit trapped-ion quantum computer register operating at cryogenic temperatures. The new system represents an important step toward developing practical quantum computers.
Portal origin URL: Pinpointing Tropical Forests with High Ecological 'Quality'Portal origin nid: 463932Published: Tuesday, August 25, 2020 - 15:00Featured (stick to top of list): noPortal text teaser: High-resolution NASA satellite data have made it possible for scientists to develop maps showing the "quality" of tropical forests.Portal image: Map of...
A team of scientists has concluded that our cognitive limitations lead to probability distortions and to subsequent errors in decision-making.
Three days of monsoon rains have killed at least 90 people and damaged at least a thousand homes across Pakistan, the country's national disaster management agency said Tuesday, as another spell of heavy rain lashed the port city of Karachi.
Three massive blazes in the San Francisco Bay Area grew slightly overnight, but their containment ticked up as crews arrived from out of state and over 14,000 firefighters fought two dozen major conflagrations across California. Authorities say California is in a "megafire era," with two of the state's largest-ever wildfires burning simultaneously and climate change blamed for blazes in...
X-ray images show a plant's power source may be different than thought.
Human rights advocates filed a new court petition against the Israeli phone hacking company Cellebrite, urging Israel’s Ministry of Defense to halt the firm’s exports to Hong Kong where security forces have been using the technology in crackdowns against dissidents as China takes greater control of Hong Kong. Hong Kong police documents show the use of Cellebrite to hack and unlock phones of...
Three massive blazes in the San Francisco Bay Area grew slightly overnight, but their containment ticked up as crews arrived from out of state and over 14,000 firefighters fought two dozen major conflagrations across California. Authorities say California is in a "megafire era," with two of the state's largest-ever wildfires burning simultaneously and climate change blamed for blazes in...
Scientific analysis suggests coronavirus was spreading in UK weeks earlier than thoughtCoronavirus – latest updatesSee all our coronavirus coverageScientists believe a 75-year-old woman from Nottinghamshire was the first known person to catch coronavirus in the UK and the earliest to die from it, as research shows the disease was circulating widely in communities in early February.Samples...
Storm Laura was upgraded to a destructive hurricane on Tuesday and is forecast to make landfall along the Texas or Louisiana coasts on Wednesday night, after earlier causing 20 deaths in Haiti.
In the largest observational study of hydroxychloroquine and azithromycin, the drug combination has been linked to significant cardiovascular risks, including death.
The world is experiencing a sixth global mass extinction event, and a new paper advocates that botanical gardens are uniquely positioned to preserve the world's plant diversity.
Coral conservation efforts could get a boost from a newly developed genotyping "chip"—the first of its kind for corals. The chip allows researchers to genetically identify corals and the symbiotic algae that live within the coral's cells, a vital step for establishing and maintaining genetic diversity in reef restoration efforts. The chip and its accompanying online analysis pipeline help to...
A comparison of the results for conventional point source pollution and bottleneck carbon emissions sources shows that oil and natural gas pipelines are far more important than simple point-source emissions calculations would indicate. It also shifts the emissions liability towards the East Coast from the Midwest. Most surprisingly, the study found that seven out of eight oil pipelines in the U.S....
An international team led by Professor Tian Hui from Peking University has recently measured the global magnetic field of the solar corona for the first time. The team used observations from the Coronal Multi-channel Polarimeter, an instrument designed by Dr. Steve Tomczyk at the National Center for Atmospheric Research, USA. Their results have been recently published in Science and Science China...
During the process of cellular protein synthesis mistakes can happen. Sometimes, proteins end up being misfolded. They do not shape up into the specific 3-D structure that is required for proper function. Misshaped secreted and transmembrane proteins usually trigger safety mechanisms that dispose of them by shuttling them from their place of synthesis, the endoplasmic reticulum (ER), to the...
A UBC Okanagan researcher has developed a way to predict the future health of the planet's coral reefs.
In a new study, researchers took a first look at one particular medication for treatment of anxiety disorders in pediatric patients to see if it was beneficial.
Marijuana could be legal in up to 40 states this year. Activist organizations oppose many at-work tests especially in non-safety-sensitive...
Not so long ago, astronomers mapped a galaxy far, far away using radio waves and found it has a strikingly familiar shape. In the process, they discovered the object, called TXS 0128+554, experienced two powerful bouts of activity in the last century.
In this image, made with the National Science Foundation's Very Long Baseline Array (VLBA), young, radio-emitting jets of material emerge from the core of an elliptical galaxy some 500 million light-years from Earth. After NASA's Fermi Gamma-ray Space Telescope detected high-energy gamma rays coming from the object, scientists used the VLBA to make high-resolution images of the galaxy, dubbed TXS...
Information can successfully be transmitted through noisy channels using quantum mechanics, according to new research from The University of Queensland and Griffith University.
Many elasmobranch species, which include sharks, skates, and rays, use estuaries as nurseries, for birthing, and as foraging grounds. Florida's Indian River Lagoon is one of 28 estuaries designated as an "estuary of national significance" by the Environmental Protection Agency's National Estuary Program. In recent decades, this estuary has experienced many environmental impacts, such as habitat...
Canadians spend big money dealing with the consequences of homelessness, but the money spent could be far more effective. According to a new McGill-led analysis, housing homeless people with severe mental illness is even more cost-effective than housing homeless people with moderate needs. A Housing-First strategy aimed at helping these individuals regain and keep permanent housing generates...
Record drought and heat have some farmers worried about where and when crops can be grown in the future, even in California where unprecedented microclimate diversity creates ideal growing conditions for many of the most popular items in America's grocery stores. A third of the vegetables and two-thirds of fruits and nuts consumed by Americans are now grown on more than 76,000 farms across the...