Новости за 05.03.2021

Nuisance flooding has increased on U.S. coasts in recent decades due to sea level rise, and new research co-authored by the University of Central Florida uncovered an additional reason for its added frequency.

Despite the many ways that COVID-19 has disrupted schools, the U.S. Department of Education will not give states a pass on giving standardized tests to students this year as it did in spring 2020. That's according to new guidance the department issued Feb. 22.

New research suggests a significant proportion of Trinity's staff and student population that formerly relied on public transport will now choose to walk or cycle to campus when it fully re-opens after lockdown.

Functioning ecosystems provide the basis for security, basic material needs, health, social interaction and individual liberty. This is how the Millennium Ecosystem Assessment 2005 described it, dividing ecosystem services into the following categories: The provisioning services; goods such as food, water, firewood and timber, the regulating services; pollination, water filtering function of the soil, flood and erosion protection, and the cultural services; recreation, places of inspiration, and education. Читать дальше...

A new data-driven study from Texas A&M University casts serious doubt on the stereotype that male students perform better than female students in science—specifically, physics.

A team of researchers from the University of Science and Technology of China and the University of California has found a way to use radicals to break C-F bonds one at a time when working with trifluoroacetamides and acetates. In their paper published in the journal Science, the group describes how they found the right radical for such reactions and how their technique might be used in future applications.

MoS2 thin films of superposed alternating layers of molybdenum and sulfur atoms form a two-dimensional semiconducting surface. However, even a surprisingly low-intensity blue light pulse is enough to alter the properties of the surface and make it metallic. This has now been demonstrated by a team at BESSY II.

Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) found large quantities of previously undetectable compounds from the family of chemicals known as PFAS in six watersheds on Cape Cod using a new method to quantify and identify PFAS compounds. Exposures to some PFAS, widely used for their ability to repel heat, water, and oil, are linked to a range of health risks including cancer, immune suppression, diabetes, and low infant birth weight.

An international research team led by chemist Prof. Thomas Heine of TU Dresden has discovered a new two-dimensional material with unprecedented properties: regardless of whether it is strained or compressed, it always expands. This so-called half-auxetic behavior has not been observed before and is therefore very promising for the design of new applications, especially in nano-sensorics.

Scientists from the University of Tsukuba and a scientist from the Institute of High Pressure Physics detected and mapped the electronic spins moving in a working transistor made of molybdenum disulfide. This research may lead to much faster computers that take advantage of the natural magnetism of electrons, as opposed to just their charge.

When you think about what separates humans from chimpanzees and other apes, you might think of our big brains, or the fact that we get around on two legs rather than four. But we have another distinguishing feature: water efficiency.

In September 2020, the LIGO/Virgo collaboration, a large team of scientists working at different universities worldwide, announced that they had detected most massive gravitational wave binary signal observed to date, which they called GW190521. In a paper published in Physical Review Letters, they explored the hypothesis that this signal was produced by the merger of two black holes, with at least the primary component mass in the mass gap predicted by the pair-instability supernova theory.

Ancient rocks from Tennessee revealed the Earth's rotation and orbit around the sun controlled the timing of oceanic dead zones in a mass extinction of marine life about 370 million years ago.

Insects that fall from the surrounding forest provide seasonal food for fish in streams. Researchers at Kobe University and The University of Tokyo have shown that the lengthening of this period has a profound effect on food webs and ecosystem functions present in streams.

One of the motivations for the recently published Journal of Accounting Research paper "Politically Connected Governments" was the daily experience with the subway system in New York City.

Smoke from local wildfires can affect the health of Colorado residents, in addition to smoke from fires in forests as far away as California and the Pacific Northwest.

From the mouth-watering baked goods of the Port Elliot Bakery, to the ocean freshness of Coffin Bay oysters, local foods are fast becoming a major drawcard for domestic tourists, especially amid COVID-19, where the safest and most reliable travel options are within our own State.

Narissra Punyanunt-Carter co-edited the book 'Communication Begins with Children,' which helps adults who have children or work with children effectively communicate with them.

New research released today by the UC Berkeley California Policy Lab finds that, contrary to some news media reports suggesting a mass exodus from California, most moves in 2020 happened within the state. Exits from California in 2020 largely mirrored historical patterns, while the biggest change was a decrease in people moving into the state.

A critical ingredient for auroras exists much higher in space than previously thought, according to new research in the journal Scientific Reports. The dazzling light displays in the polar night skies require an electric accelerator to propel charged particles down through the atmosphere. Scientists at Nagoya University and colleagues in Japan, Taiwan and the U.S. have found that it exists beyond 30,000 kilometers above the Earth's surface—offering insight not just about Earth, but other planets as well.

Forests can regulate the global dispersion of persistent organic pollutants (POPs). In theory, the forest plays as a "sink" and delays the transport of POPs to remote/cold regions.

Recently, a research team from the Shanghai Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences (CAS) proposed a new design with mixture layers and novel sandwich-like-structure interfaces to meet the challenging requirements of the ideal dichroic laser mirrors. The research article was published in Photonics Research on Jan. 27, 2021, and was highlighted as an Editor's Pick.

For years, scientists have known that certain bacteria produce molecules that are toxic to other bacteria when there is competition for food and space. Now, Caltech researchers have discovered these so-called antibiotics have another purpose: they help the bacteria acquire essential nutrients when resources are scarce.

In a new study by the Yale Department of Immunobiology and Yale Cancer Center, researchers report combined liver and growth factor humanization enhances human red blood cell production and survival in circulation the immunodeficient murine host. The discovery could help in the development of treatments of life-threatening blood disorders, such as myelodysplastic syndrome, and diseases afflicting red blood cells, including sickle cell disease and malaria. The study is published online today in the journal Science.

Roundworms don't have eyes or the light-absorbing molecules required to see. Yet, new research shows they can somehow sense color. The study, published in the journal Science, suggests worms use this ability to assess the risk of feasting on potentially dangerous bacteria that secrete blue toxins. The researchers pinpointed two genes that contribute to this spectral sensitivity and are conserved across many organisms, including humans.