Новости за 26.04.2021

The astronauts flying SpaceX back to Earth this weekend urged boaters to stay safe by staying away from their capsule's splashdown in the Gulf of Mexico.

Stomata, formed by a pair of kidney-shaped guard cells, are tiny pores in leaves. They act like mouths that plants use to 'eat' and 'breathe.' When they open, carbon dioxide (CO2) enters the plant for photosynthesis and oxygen (O2) is released into the atmosphere. At the same time as gases pass in and out, a great deal of water also evaporates through the same pores by way of transpiration.

New findings detailing the world's first-of-its-kind estimate of how many people live in high-altitude regions, will provide insight into future research of human physiology.

A new study by five doctoral students in neuroscience at the University of Minnesota Medical School calls attention to a lack of regulation and unknown long-term health effects of tear gas. Based on their research, the group recommends changing the protocols around the use of tear gas as a crowd control measure at both the local and national level.

You may have heard that a wolf pack is led by an alpha pair.

The team led by UDE's Prof. Michael Horn-von Hoegen aims at producing the thinnest possible layer of boron, so-called borophene, since it promises properties that could enable the construction of two-dimensional transistors. The molecular beam epitaxy used for this purpose until now results in domains that are far too small. For more precise investigations and for use in technology, however, larger areas are needed.

For years it's been relatively easy to measure pollution from, say, a factory. At a factory, there might be just one pipe of waste to measure. Easy enough.

Humans have been breeding plants for their economic value for thousands of years. Traditionally, plant breeding techniques included cumbersome and time-consuming techniques like grafting and hybridization to enhance traits of economic value like disease resistance and high nutrition content. Now, with the ability to edit plant DNA using revolutionary gene-editing tools, particularly the CRISPR-Cas9 system, it is possible to enhance traits of economic value in plants easily and more efficiently than by using traditional techniques. Читать дальше...

Prof. Pan Jianwei and his colleagues from the University of Science and Technology of China of the Chinese Academy of Sciences investigated the high-loss free space, high-precision time-frequency dissemination between remote locations, simulating high-precision time-frequency high-orbit satellite-ground links in the channel loss, atmospheric noise, and transmission delay effects.

The obstacles associated with shopping, such as shipping costs or the time needed to go to the shop, are crucial to the individual choice of where to shop. When deciding between online shopping and local shopping, personal opinion on purchasing security, environmental protection aspects, and work conditions plays a role. This is found by a study using microeconometric models at Karlsruhe Institute of Technology (KIT). Some of the results of the representative study funded by the German Research Foundation... Читать дальше...

Proteins are undoubtedly some of the most fascinating biomolecules, and they perform many of the functions that (in our eyes) separate life from inanimate matter. Multi-molecular protein assemblies even have large-scale structural functions, as evidenced by feathers, hair, and scales in animals. It should come as no surprise that, with progress in advanced nanotechnology and bioengineering, artificial protein assemblies have found applications in a variety of fields, including catalysis, molecular storage, and drug delivery systems.

Japan's biggest airline ANA said Monday it aims to become carbon neutral by 2050 through new technology, emissions trading and other efforts.

The Big Sur coast is prime habitat for black abalone and has had one of the few remaining healthy populations of this endangered species. So when heavy winter rains triggered debris flows from the Dolan Fire burn scar, dumping tons of sediment onto the coastline, marine scientists at UC Santa Cruz found themselves leading a rescue operation.

A team of researchers with the Westfalen-Lippe Landscape Association revealed during a presentation in the city of Schmallenberg that one of the largest hoards of Iron Age weapons in western Germany had been unearthed at a nearby dig site on a small mountain in Wilzenberg. In their press release, the researchers note that they found approximately 100 Celtic Iron Age artifacts—primarily through the use of a metal detector.

Scientists from Western Sydney University and the Taronga Conservation Society have published a new method in the journal Remote Sensing In Ecology and Conservation for detecting and counting flying-foxes in tree canopies by using thermal camera-equipped drones.

Satellite images show how quickly clouds respond to aerosols emitted by ships, helping inform climate modeling.

Living in social housing is no longer an accurate indicator of prosperity, with new research indicating a narrowing of the gap between social renters and the private sector in terms of income, job status and social class.

Wells located near ancient folds and fractures in the bedrock beneath southeastern Wisconsin are more likely to contain arsenic, a dangerous contaminant in drinking water, according to research just published by the Wisconsin Geological and Natural History Survey.

Can training help prevent police officers from shooting unarmed Black men? Maybe not, according to new research from the University of Colorado Boulder, which found that inducing cognitive load—taxing the brain's working memory resources—erased the benefits of practice in a first-person shooter simulation.

The Pleistocene epoch, which started 2.6 million years ago and lasted until about 11,700 years ago, was crucially important for our hominin ancestors.

On the 35th anniversary of one of the world's worst nuclear disasters, new research has been published that could help to contain and clean up the most dangerous radioactive materials that still remain at the site in Chernobyl.

Young scientists of Tomsk Polytechnic University as a part of the team of Arctic researchers have studied pore waters in three areas of methane release on the surface. They first managed to define in details the composition of pore waters in the cold methane seeps of the Eastern Arctic seas. The research findings are published in the Water academic journal.

The evolving periodicity of the brightness of certain types of stars can now be described mathematically.

Researchers at Institut Néel-CNRS, University of Saint Louis and University of Rochester recently realized a two-qubit engine fueled by entanglement and local measurements. This engine's unique design, outlined in a paper published in Physical Review Letters, could open up exciting possibilities for thermodynamics research and inform the development of new quantum technologies.

Using the ARO 12-m telescope, astronomers have investigated a young starless core known as Lynds 1521E (or L1521E). The study resulted in the detection of complex organic molecules in this object. The finding is detailed in a paper April 15 on the arXiv pre-print repository.