Новости за 25.01.2024

A study published in Chemistry—A European Journal presents a proof-of-principle design of molecular motors.

The environmental risks of new pesticides containing nanoparticles are inadequately researched, according to four Leiden University scientists, who have published an article in the journal Environmental Science & Technology. They call for an examination of the long-term and environmental effects of pesticides containing nanoparticles.

Plant architecture is the outcome of several successive developmental processes that can be classified into two events: Organogenesis and extension. Organogenesis stems from the meristems (stem cells) that give rise to different types of organs (e.g., leaves and flowers) and axillary buds, plus the subtending internodes. These organs form a functional unit called phytomer. It iterates and extends itself for several rounds until the apex either aborts or terminates into a specialized structure.

Measuring the amount of precipitation that falls in a specific location is simple if that location has a device designed to accurately record and transmit precipitation data. In contrast, measuring the amount and type of precipitation that falls to Earth in every location is logistically quite difficult. Importantly, this information could provide a wealth of data for characterizing and predicting Earth's water, energy and biogeochemical cycles.

Wastewater treatment plants (WWTPs) are good at cleaning up common pollutants but often miss tiny amounts of other harmful substances, known as trace organic pollutants.

Based on multiple evidence from remote sensing observations, global ecosystem model simulations and atmospheric CO2 inversions, a study led by Dr. Fangzhong Shi and Dr. Xiuchen Wu (Faculty of Geographical Science, Beijing Normal University) has found continuous vegetation greening and a slight increase in land carbon sink during the maturation phase of the 2015/2016 El Niño event over the Northern Hemisphere.

A newly published review of the CABI-led Pest Risk Information Service (PRISE) project shows that smallholder farmers in four African countries who received pest alerts created using earth observation data benefitted from reduced crop losses and higher incomes compared to farmers who did not.

Kyushu University researchers have found that Japanese beech (Fagus crenata) in the forests of southern Kyushu have seen reduced growth, due to soil erosion caused by the overpopulation of sika deer (Cervus nippon). Their findings, which were published in the journal Catena, could help in the development of new strategies for forest conservation.

River flooding is among the most catastrophic disasters worldwide. The Pearl River, the longest watercourse in southern China, particularly its lower reach with dense population and economic activity, has been identified as one of the world's most vulnerable regions to flood exposure.

Carbonic maceration wines are increasingly in demand on the market. They are young red wines in which floral and fresh fruit aromas predominate and they must be consumed within the first year. The best-known example is Beaujolais nouveau in France, but there is also a tradition in La Rioja and Catalonia, especially in the Montsant area and the Conca de Barberà.

Micro-estuaries, often overlooked but vital ecosystems supporting biodiversity and enhancing human life quality in densely populated areas, play a crucial role in controlling the transfer of pollutants from land to sea. A new study investigating the occurrence, distribution, and associated risks of per- and polyfluoroalkyl substances (PFAS) in three micro-estuaries during the dry season has been undertaken.

How does climate change affect the migration routes of birds? Mainly negatively, according to a new study from Yali Si from the CML at Leiden University.

LISA, the Laser Interferometer Space Antenna, has passed a major review: the entire concept—from the definition of the overall mission and operations to the space hardware to be built—stood up to the intense scrutiny of ESA's reviewers.

Witnesses to anti-social behavior must speak up to support the lone voices of people who confront it to reduce the risk of such behavior becoming tolerated in society, according to research from the Universities of Bath, Groningen and Western Australia.

It was at 22:48 CET on Saturday 20 January when veteran asteroid hunter Sárneczky discovered a new asteroid using the 60 cm Schmidt Telescope at Piszkéstető Mountain Station, part of Konkoly Observatory in Hungary.

Hundreds of tons of dead fish flowed down the Oder River at the turn of July and August 2022. The scale of the event was devastating. Despite prompt efforts, Polish and German authorities struggled to identify the cause of this ecological disaster for several weeks.

Mason Leist is working remotely—127 million light-years from Earth—on images of a supermassive black hole in his office at the UTSA Department of Physics and Astronomy.

A team of researchers at the University of Kentucky and Cincinnati Children's Hospital is delving deeper into the science behind how spiny mice can regenerate lost tissue. They are using what they learn to trigger regeneration in other types of mice—advances that one day may be translated into humans.

Astronomers using the NASA/ESA Hubble Space Telescope observed the smallest exoplanet where water vapor has been detected in its atmosphere. At only approximately twice Earth's diameter, the planet GJ 9827d could be an example of potential planets with water-rich atmospheres elsewhere in our galaxy.

A soap film with chemically distinct sides represents the latest breakthrough in research led by chemist Sylvestre Bonnet. This unique soap film, along with an innovative device capable of continuously producing new soap films, forms a crucial piece in the puzzle for the development of artificial photosynthesis. The study is published in Physical Review Letters.

All animals need sleep. When humans or animals don't get enough, it can lead to trouble paying attention, irritability, and other ill effects. And yet, researchers reporting in the journal Current Biology have made the surprising discovery that a small Australian marsupial called an antechinus will sacrifice hours of sleep per night to make more time for sex during the mating season.

What are the origins of wings and tails in birds? This is one of the key questions in the evolution of animals. It has long been accepted that their evolution began in feathered dinosaurs.

The branch of mathematics known as topology has become a cornerstone of modern physics thanks to the remarkable—and above all reliable—properties it can impart to a material or system. Unfortunately, identifying topological systems, or even designing new ones, is generally a tedious process that requires exactly matching the physical system to a mathematical model.

Measuring the impact of different events, such as marine heat waves, on the abundance of marine organisms is not easy. Biological communities naturally change over time and between different locations.

Were dinosaurs already on their way out when an asteroid hit Earth 66 million years ago, ending the Cretaceous, the geologic period that started about 145 million years ago? It's a question that has vexed paleontologists like us for more than 40 years.