- ScienceDaily
- 21/10/13 23:40
Interactions between iron, water, oxygen and ions quickly become complex. Scientists have now developed a more precise method to observe how iron minerals like rust form.
206 articles from WEDNESDAY 13.10.2021
Interactions between iron, water, oxygen and ions quickly become complex. Scientists have now developed a more precise method to observe how iron minerals like rust form.
Researchers are carrying the field of microscopy a step further, refining a technique known as cryogenic electron microscopy, or cryo-EM.
The massive columns of smoke generated by a nuclear war would alter the world's climate for years and devastate the ozone layer, endangering both human health and food supplies, new research shows. The international study draws on newly developed computer climate modeling techniques to paint an even grimmer picture of a global nuclear war's aftermath than previous analyses.
Oxytocin, a naturally occurring hormone that acts as a chemical messenger in the brain, showed no evidence of helping children with autism gain social skills, according to a large national study.
Intimate photos that provide a rare window into the lives of polar bears, birds and insects have earned several Canadians recognition in this year’s Wildlife Photographer of the Year...
As efforts to reverse mass incarceration rise, so does the need to supervise more individuals in the community. Faced with heightened demand, corrections agencies increasingly use risk assessment to allocate supervision and treatment resources efficiently and improve public safety. A new study examined the time individuals have spent without being arrested or returning to prison, looking at the...
One can easily see with the naked eye that leaving an old nail out in the rain causes rust. What does require the keen eyes and sensitive nose of microscopy and spectroscopy is observing how iron corrodes and forms new minerals, especially in water with a pinch of sodium and calcium.
Jair Bolsonaro’s comments called ‘stupid and selfish’ in country where 600,000 people have died of CovidCoronavirus – latest updatesSee all our coronavirus coverageMore than 600,000 of his citizens have lost their lives to a Covid-19 outbreak he once pooh-poohed as a “little flu”, but Brazil’s science-denying president, Jair Bolsonaro, has announced he will decline to be vaccinated,...
Metasurfaces are nanoscale structures that interact with light. Today, most metasurfaces use monolith-like nanopillars to focus, shape and control light. The taller the nanopillar, the more time it takes for light to pass through the nanostructure, giving the metasurface more versatile control of each color of light. But very tall pillars tend to fall or cling together. What if, instead of...
Context matters. It's true for many facets of life, including the tiny molecular machines that perform vital functions inside our cells.
Scientists at CSIRO, Australia's national science agency, have uncovered a new type of Hendra virus in flying foxes, confirming the virus can be found across a broad region of the country.
Scientists have known for a long time that magnetism is created by the spins of electrons lining up in certain ways. But about a decade ago, they discovered another astonishing layer of complexity in magnetic materials: Under the right conditions, these spins can form little vortexes or whirlpools that act like particles and move around independently of the atoms that spawned them.
Two independent studies have illuminated unexpected substructures in the fundamental components of all matter. Preliminary results using a novel tagging method could explain the origin of the longstanding nuclear paradox known as the EMC effect. Meanwhile, authors will share next steps after the recent observation of asymmetrical antimatter in the proton.
Researchers are building symbiotic 'underwater gardens' in the Pacific Ocean to show how different species of coral can work together to possibly restore degraded reefs.
In areas where COVID-19 vaccines are limited, vaccinating essential workers before older adults can reduce infections and deaths, according to a modeling study.
New research suggests that dengue -- a viral infection spread by mosquitos -- could be suppressed in Singapore in a highly cost-effective manner through the release of mosquitos infected with the bacterium Wolbachia.
In patients with COVID-19, a high body mass index (BMI) is associated with an increased risk of death and prolonged intensive care unit (ICU) stay, according to a new study.
For nearly a decade, scientists have known that HIV integrates itself into genes in cells that have the potential to cause cancer. And when this happens in animals with other retroviruses, those animals often develop cancer. But, perplexingly and fortunately, that isn't regularly happening in people living with HIV. A new study reveals why doctors aren't seeing high rates of T cell lymphomas -- or...
At the beginning of neurodegenerative disease, the immune cells of the brain -- the 'microglia' -- take up glucose, a sugar molecule, to a much greater extent than hitherto assumed. These results are of great significance for the interpretation of brain scans depicting the distribution of glucose in the brain. Furthermore, such image-based data could potentially serve as a biomarker to...
Direct evidence that microtubules function as mechano-sensors and regulate the intracellular transport of molecules has been reported, leading to new possibilities in the fields of biomechanics, medicine, and biosensors.
Researchers have revealed that non-mammalian vertebrates might have a much more simple and effective way of deciphering between color and greyscale information than humans.
The pandemic has led to a sharp increase in the number of people working remotely and an increase in competition for skilled labor. It would seem like a golden opportunity for business leaders to empower their workforce in order to keep good employees and recruit new ones. But the idea has met with widespread resistance. What gives?
As satellites collect larger and larger amounts of data, engineers and researchers are implementing solutions to manage these huge increases.
Inside cells, microtubules not only serve as a component of the cytoskeleton (cell skeleton) but also play a role in intracellular transport. In intracellular transport, microtubules act as rails for motor proteins such as kinesin and dynein. Microtubules, the most rigid cytoskeletal component, are constantly subjected to various mechanical stresses such as compression, tension, and bending during...
About 175,000 plant species—half of all flowering plants—mostly or completely rely on animal pollinators to make seeds and so to reproduce. Declines in pollinators could therefore cause major disruptions in natural ecosystems, including loss of biodiversity.
Any writer can tell you that the narrator of a story can make a significant difference. A new study finds that the same holds true for science videos, with viewers responding positively to researchers who present their own work, as compared to third-party presenters.
Corals are the foundation species of tropical reefs worldwide, but stresses ranging from overfishing to pollution to warming oceans are killing corals and degrading the critical ecosystem services they provide. Because corals build structures that make living space for many other species, scientists have known that losses of corals result in losses of other reef species. But the importance of...
Actor William Shatner soared aboard a Blue Origin rocketship on a suborbital trip on Wednesday to become, at the age 90, the oldest person ever in space - an experience he called profound - as US billionaire businessman Jeff Bezos's company carried out its second tourist flightWilliam Shatner completes flight on Bezos rocket to become oldest person in space Continue...
An international team of astronomers recently observed more than 1,650 fast radio bursts (FRBs) detected from one source in deep space, which amounts to the largest set -- by far -- of the mysterious phenomena ever recorded. The source, dubbed FRB 121102, was observed using the Five-hundred-meter Aperture Spherical Telescope (FAST) in China, and represents more FRBs in one event than all previous...
Physicists have made the most precise measurement of the neutron's lifetime, which may help answer questions about the early universe.
During the COVID-19 pandemic, addiction treatment providers rapidly pivoted to providing services via telehealth. New research highlights the potential for telehealth delivery to increase patient engagement by improving access and convenience. However, it also finds limited evidence that telehealth results in better retention or other outcomes relative to in-person treatment.
Testing pooled saliva samples twice weekly for SARS-CoV-2 on a residential college campus yielded a greater than 95 percent agreement with the gold standard for accuracy -- nasopharyngeal diagnostic samples tested singly.
There is no prospect of the volcanic eruption in Spain's Canary Islands ending "in the short or medium term", experts said Wednesday after three-and-a-half weeks of activity.
New technique temporarily allows drugs to cross blood brain barrier to treat tumoursA technique has been developed that could revolutionise the treatment of brain cancers and neurodegenerative diseases by temporarily allowing drugs and other substances to cross the blood brain barrier – a structure that separates the brain’s blood vessels from the rest of its tissues.A trial in four women...
Fungal diseases of plants are normally managed through the application of fungicides, which are not only toxic to the pathogens that cause these diseases but to other organisms, including humans, animals, and the environment, especially after long and repeated applications. A recent article summarizes an attempt to use dsRNA molecules, which are non-toxic by themselves and present in all living...
New research at Queen's University highlights the impact that microplastics are having on hermit crabs, which play an important role in balancing the marine ecosystem.