Новости за 19.01.2021

For the first time ever, a team of scientists, led by the University of Bristol, have described in detail a dinosaur's cloacal or vent—the all-purpose opening used for defecation, urination and breeding.

The quest for ever-smaller electronic components led an international group of researchers to explore using molecular building blocks to create them. DNA is able to self-assemble into arbitrary structures, but the challenge with using these structures for nanoelectronic circuits is the DNA strands must be converted into highly conductive wires.

What causes brain concussions? Is it direct translational or rotational impact? This is one of the research areas currently being explored by Qianhong Wu's lab at Villanova University.

A worrying new study has highlighted that up to 78% of beachgoers in Aotearoa New Zealand are unable to spot rip currents (rips) in the surf, increasing the risk that they may inadvertently end up caught in one.

Researchers have used the world's smallest, smartphone-sized DNA sequencing device to monitor hundreds of different bacteria in a river ecosystem.

A team of researchers led by Assistant Professor Yuki Arakawa (Toyohashi University of Technology, Japan) has successfully developed sulfur-containing liquid crystal (LC) dimer molecules) with oppositely directed ester bonds, which exhibit a helical liquid crystal phase, viz. twist-bend nematic (NTB) phase) over a wide temperature range, including room temperature. Collaboration with a team at the Advanced Light Source research facility (Lawrence Berkeley National Laboratory, USA) revealed that the... Читать дальше...

While surveying the Hawaiian island of Kauai in search of invasive plants in 2017, botanist Kelsey Brock spotted something unusal: a few nonnative species of figs seemed to be settling in.

Men speak 1.6 times more often than women in college classrooms, revealing how gender inequities regarding classroom participation still exist, according to a Dartmouth study. By comparison, women are more hesitant to speak and are more apt to use apologetic language. The findings are published in Gender & Society.

Over the course of the COVID-19 pandemic, researchers have found coronavirus infections in pet cats and dogs and in multiple zoo animals, including big cats and gorillas. These infections have even happened when staff were using personal protective equipment.

Chemotherapy and radiation treatments are known to cause harsh side effects that patients can see or feel throughout their bodies. Yet there are additional, unseen and often undiscussed consequences of these important therapies: the impacts on their future pregnancies and hopes for healthy children.

New study identifies a bizarre new species suggesting that giant marine lizards thrived before the asteroid wiped them out 66 million years ago.

Climate change is more pronounced in the Arctic than anywhere else on the planet, raising concerns about the ability of wildlife to cope with the new conditions. A new study shows that rare insects are declining, suggesting that climatic changes may favor common species.

The pandemic has allowed many of us to develop a new appreciation of the great outdoors. But of course, this renewed engagement with nature comes at a time when our natural world is facing an unparalleled climate crisis.

In a series of experiments with laboratory-cultured bacteria, Johns Hopkins scientists have found evidence that there is a second role for the widely used gene-cutting system CRISPR-Cas9—as a genetic dimmer switch for CRISPR-Cas9 genes. Its role of dialing down or dimming CRISPR-Cas9 activity may help scientists develop new ways to genetically engineer cells for research purposes.

A team of scientists from the University of Manchester have been honoured with a Guinness World Record for weaving threads of individual molecules together to create the world's finest fabric, overtaking finest Egyptian linen.

Researchers in the UK and the United States have succeeded in 'fine tuning' a new thermoplastic biomaterial to enable both the rate at which it degrades in the body and its mechanical properties to be controlled independently.

Ten years ago, PayPal founder Peter Thiel condensed the growing sense of disappointment in new technologies down to just nine words. "We wanted flying cars," he wrote, "instead we got 140 characters."

A new study published in PNAS finds that aid provided by the United Nations (UN) in the aftermath of climate-related disasters is driven by humanitarian need rather than by strategic donor interests. The results underline the importance of climate-related hazards for understanding aid disbursements.

A research team led by Professor Chi-Ming Che and Dr. Jun Yang, from the Research Division for Chemistry and Department of Chemistry at the Faculty of Science of the University of Hong Kong, has resolved a long-standing fundamental problem in the field of metal-metal closed-shell interaction. This work has been published in the journal Proceedings of the National Academy of Sciences (PNAS).

Can combining deep learning (DL)—a subfield of artificial intelligence—with social network analysis (SNA), make social media contributions about extreme weather events a useful tool for crisis managers, first responders and government scientists? An interdisciplinary team of McGill researchers has brought these tools to the forefront in an effort to understand and manage extreme weather events.

The fossilized insect is tiny and its genital capsule, called a pygophore, is roughly the length of a grain of rice. It is remarkable, scientists say, because the bug's physical characteristics—from the bold banding pattern on its legs to the internal features of its genitalia—are clearly visible and well-preserved. Recovered from the Green River Formation in present-day Colorado, the fossil represents a new genus and species of predatory insects known as assassin bugs.

Research during the first phase of remote teaching in Victoria reported some students found the workload "too high," missed interactions with peers, felt their thinking ability was impaired, and reported a difficulty coping with study and life more generally.

Queen's researcher Christopher Cotton is one of the authors of "Building the Canadian Shield," an approach that says a longer lockdown will save more lives and cost less economically.

Tokamaks, devices that use magnetic fields to confine plasma into torus-shaped chamber, could play a crucial role in the development of highly performing nuclear fusion reactors. The ITER tokamak, which is set to be the largest nuclear tokamak in the world, is particularly likely to shape the way in which nuclear reactors will be fabricated in the future.

Growing perennial grasses on abandoned cropland has the potential to counteract some of the negative impacts of climate change by switching to more biofuels, according to an NTNU research group.