- PhysOrg
- 22/9/5 21:53
A group of researchers in Thailand has replicated "Hydroxy-xanthones," the antioxidant-rich vital extracts found in mangosteen peels that kill germs and halt infections in the intestinal mucosa.
A group of researchers in Thailand has replicated "Hydroxy-xanthones," the antioxidant-rich vital extracts found in mangosteen peels that kill germs and halt infections in the intestinal mucosa.
Thanks to high-throughput single-cell RNA sequencing (scRNA-seq), it is possible to construct single-cell transcriptomic atlases at the organic level. For example, cell atlases for vertebrate and invertebrate systems have been successfully generated, such as the Human Cell Landscape (HSC), Mouse Cell Atlas (MCA), Zebrafish Cell Landscape (ZCL) and Drosophila embryo. However, most of these studies...
A new study from North Carolina State University shows soil temperature can be used to effectively monitor and predict the spread of the corn earworm (Helicoverpa zea), a pest that ravages corn, cotton, soybeans, peppers, tomatoes and other vegetable crops. The ability to better monitor the pest and make predictions about where it will appear could help farmers control the pest more effectively,...
While hundreds of thousands of people made their way to the Space Coast two weekends in a row for a shot to see the most powerful rocket to ever lift off from Earth, a couple of scrubs for NASA's Artemis I mission left them disappointed.
For disaster management organizations (DMOs) across Europe, social media and crowdsourcing (SMCS) are playing an increasingly larger role in dealing with crises. However, their effectiveness remains unclear, as do their opportunities and challenges in European disaster resilience.
A biosensor network that can detect airborne viral particles could be put in place on animal farms and livestock markets. With appropriate analysis of the data from these internet-of-things (IoT) devices it might be possible to detect the earliest presence of a putative infectious agent that has undergone zoonosis and so made the leap from animal pathogen to a virus that can cause human disease,...
A new Tel Aviv University study rejects assertions that the origin of the COVID-19 outbreak lies in bats. According to the study, bats have a highly effective immune system that enables them to deal relatively easily with viruses considered lethal for other mammals.
Astronauts with their sights on the moon are receiving world-class geology training during the fifth edition of ESA's Pangaea campaign. From choosing landing sites for a future Artemis mission, to designing science operations for the lunar surface, the course challenges space explorers to become field scientists.
Until now it has been difficult to test the health of dolphin populations due to their migratory pattens, their size and, in some cases, dwindling numbers.
In a recent publication in the journal Advanced Materials, a team of physicists and chemists from TU Dresden presents an organic thin-film sensor that describes a completely new way of identifying the wavelength of light and achieves a spectral resolution below one nanometer. As integrated components, the thin-film sensors could eliminate the need for external spectrometers in the future. A patent...
Riverine floodplains are among the most species-rich ecosystems on earth. Because they form the interface between land and water, they are hotspots of nutrient turnover and biodiversity. Along many rivers, however, numerous floodplains have been cut off from waterways or converted to other uses. At the same time, too many nutrients enter the water, especially nitrogen. Both degrade water quality...
As adverse weather events like heavy rainfall, subsequent flooding and heat waves grow more severe and increase in frequency, checking the weather forecast means much more than knowing if you need an umbrella: Extreme weather is inextricably linked to our safety and well-being.
Citizens sometimes just have to live with political decisions they dislike or think are unfair. But if their preferred party leaders communicate that the decisions have been made properly, the feeling of unfairness can diminish according to research from the University of Gothenburg.
More than two decades ago the South African government put in place a policy designed to redress racial imbalances in the country's economy. But, as I suggest in a recent paper, the policy—known as broad-based black economic empowerment)—has been hijacked and repurposed by individuals and factions within the ruling African National Congress (ANC) for the purpose of corruption and...
Two-dimensional van der Waals materials have been the focus of work by numerous research groups for some time. Standing just a few atomic layers thick, these structures are produced in the laboratory by combining atom-thick layers of different materials (in a process referred to as "atomic Lego"). Interactions between the stacked layers allow the heterostructures to exhibit properties that the...
Squeaky, cloudy or spherical—electron orbitals show where and how electrons move around atomic nuclei and molecules. In modern chemistry and physics, they have proven to be a useful model for quantum mechanical description and prediction of chemical reactions. Only if the orbitals match in space and energy can they be combined—this is what happens when two substances react with each other...
Many people living today have a small component of Neanderthal DNA in their genes, suggesting an important role for admixture with archaic human lineages in the evolution of our species. Paleogenetic evidence indicates that hybridization with Neanderthals and other ancient groups occurred multiple times, with our species' history resembling more a network or braided stream than a tree. Clearly the...
Scientists have long pondered how and when the evolution of prokaryotes to eukaryotes occurred. A collaborative research team from Tohoku University and the University of Tokyo may have provided some answers after discovering new types of microfossils dating 1.9 billion years.
Cold stress at the booting stage leads to lower seed setting rate and seriously threatens the production and quality of rice.
Mutations are the raw material of evolution. For example, a single change in an DNA base pair can cause a protein molecule to lose its function, with potentially major effects on the overall organism. However, mutations—and especially the ones that do not have major effects—can also provide a roadmap to determining if there is a pattern in the evolution of genomic attributes such as nucleotide...
Reusable rocket engines have become all the rage lately, even as NASA's continually delayed Artemis I mission attempts to launch with non-reusable technology. Realistically, the only way to significantly lower launch costs is to reuse the engines rather than build them from scratch every time. Another small start-up company, RocketLab, has successfully retested a rocket that has flown in space.
Pakistan is experiencing the most devastating and widespread floods in its history, with the country's climate minister saying waters have reached across a third of the nation.
Neanderthals have served as a reflection of our own humanity since they were first discovered in 1856. What we think we know about them has been shaped and molded to fit our cultural trends, social norms and scientific standards. They have changed from diseased specimens to primitive sub-human lumbering cousins to advanced humans.
Researchers led by Prof. Zahng Tao at the Ningbo Institute of Materials Technology and Engineering (NIMTE) of the Chinese Academy of Sciences has synthesized two novel vinylene-linked two-dimensional covalent organic frameworks (v-2D-COFs) with isomeric structures via benzobisoxazole-mediated aldol polycondensation, showing distinct photocatalytic properties. The study was published in Journal of...
Social unrest due to systemic racism is causing early career scientists from underrepresented backgrounds to experience psychological distress, according to new results from a research survey conducted by University of Pittsburgh scientists. Such distress is a red flag as academic institutions nationwide strive to improve diversity.