Новости за 04.08.2022

Manipulating solid particles of a few micrometers in size using an electric field has been of great interest to physicists. These controllable particles can be assembled into dynamic chains that can effectively control the flow of liquids in thin tubes like capillaries. Replacing these solid particles with liquid droplets would allow for previously unachievable electrorheology applications in biotechnology, as liquid droplets can store and utilize various biomolecules such as enzymes. Until now,... Читать дальше...

Grasslands' biodiversity and resilience to disturbances such as fire, heat and drought is the result of a slow process over hundreds of years, like that of old growth forests, finds new CU Boulder-led research.

Fly-swatting season is here. No sooner will you place your fresh strawberries on the kitchen counter than will the first fruit fly arrive. It won't take long for a platoon of Drosophila buddies to be hovering about the spoils.

Stand up in a canoe and you'll probably find yourself in the water before too long. Jump up and down on the upper edges of the sides of the canoe, and you'll likely end up in the drink as well. But get the balance right and you'll be able to move yourself along by as much as one meter per second, according to a study published in Physical Review Fluids examining gunwale bobbing.

Revealing the potentially habitable climate of ancient Mars is a key part of NASA's mission to explore and understand the unknown, to inspire and benefit humanity—and for 10 years, the Curiosity rover has been on the case at the Red Planet.

A new study uses data from the ECOSTRESS instrument aboard the space station to better understand why some parts of a wildfire burn more intensely than others.

Despite being some of the most versatile building blocks in organic chemistry, compounds called carbenes can be too hot to handle. In the lab, chemists often avoid using these highly reactive molecules due to how explosive they can be.

Floods, droughts, and other water-related disasters are some of the costliest natural events that occur in Canada and around the world. Even with significant global advances in science and infrastructure designed to predict and manage such extreme disasters, many communities still face major societal and economic impacts when these events occur.

Researchers Albert Cairó and Karel Riha of the Central European Institute of Technology (CEITEC) and their colleagues have discovered a previously unknown mechanism that is responsible for reprogramming gene expression in plants during the transition period when one cell differentiates into another one. The mechanism occurs at the end of meiosis, a specialized cell division essential for sexual reproduction, and enables the differentiation of germ cells and pollen. This mechanism involves the dynamic... Читать дальше...

The ground rumbles underfoot, then roars as red-orange lava fountains shoot up from the ground, the intense heat cloaking the nearby crowd awestruck by Iceland's latest volcanic eruption.

Beneath the surface of rivers lurks a hazard that isn't well understood—but could wreak havoc on people and communities near the water.

Tropical coastal ecosystems are among the most biodiverse areas on Earth. They're also on the front lines of effects caused by human activity. That's why it's becoming increasingly important, especially as human populations increase, to manage the impacts of runoff and wastewater that flow into the sea.

New genetic analyses of wild baboons in southern Kenya reveals that most of them carry traces of hybridization in their DNA. As a result of interbreeding, about a third of their genetic makeup consists of genes from another, closely-related species.

Scientists have constructed the most complete and detailed single-cell map of embryo development in any animal to date, using the fruit fly as a model organism.

Washington is required by law to eliminate or offset all of its greenhouse gas emissions by 2050. But generous exemptions for more than 40 of the state's biggest polluters in a forthcoming carbon market could push that goal beyond reach.

Jeff Bezos' Blue Origin on Thursday launched six people to space, including the first from Egypt and Portugal, on the company's sixth crewed flight.

If you're heading out to California's Monterey Bay this summer, you're going to need a bigger boat.

Polyamines (PAs), including putrescine (Put, a diamine), spermidine (Spd, a triamine), and spermine (Spm, a tetramine), are low-molecular-weight polycations and aliphatic nitrogen-containing substances. They play important roles in the overall life cycle of plants, from seed germination to fruit ripening, abscission, and senescence. There has been a growing interest in the study of PAs involved in plant stresses, including drought, hypoxia, high temperature, low temperature, salinity, and metal toxicity. Читать дальше...

Don Wyse's field of winter barley used to be mostly empty in the spring.

A research team led by André Marques at the Max Planck Institute for Plant Breeding Research in Cologne, Germany, has uncovered the profound effects of an atypical mode of chromosome arrangement on genome organization and evolution. Their findings are published in the journal Cell.

When making a soup, maintaining the correct balance of liquid and salt is key. Similarly, maintaining the balance of water and electrolytes is an important physiological process in the human body, and disruption of this process can have serious consequences. The kidneys regulate the amount of water and solutes taken in and excreted from the body through a process known as urine concentration. Recently, researchers in Japan have shed new light on the molecular mechanisms underlying this process.

More than 225,000 tweets with the hashtags #scamdemic and #plandemic led to an "infodemic" of misinformation and disinformation on Twitter during the first year of the pandemic, according to a study by UT Southwestern researchers published in PLOS ONE.

One sweltering afternoon this spring, Stephen Kruse trekked along a dry creek bed with a backpack full of fossils.

The LHCb experiment at CERN recently announced the first proton-proton collisions at a world-record energy with its brand-new detector designed to cope with much more demanding data-taking conditions.

NASA has yet to get its next-generation moon rocket off the ground, but this week announced a shift in how it plans to pay for future launches while also falling under a new directive from Congress to increase the number of flights each year.