Tech
The application Radar COVID detects twice as many close contacts of people infected with the virus SARS-Cov2 as the manual tracing system. This is the conclusion of the first scientific study that was carried out to assess the application in a trial carried out last summer on the island of La Gomera in the Canary Islands.
An atlas of harmful algal blooms across the Red Sea reveals their link with industrial aquaculture and how these blooms have changed in recent decades.
Warming oceans and anthropogenic pollution have led to more frequent and extensive harmful algal blooms (HABs) worldwide. These rapid surges in productivity occur when algae suddenly experience advantageous conditions, usually an influx of nutrients, and take over their environment, suffocating other marine life and spreading toxins through the food chain. These blooms harm wild and farmed fish and reduce marine biodiversity.
Australians love their beaches, and now a new study also confirms the broad appeal of other coastal assets such as tidal wetlands, nature trails and protected areas including bird and dolphin sanctuaries.
In one of the first studies of its kind in Australia, ahead of World Wetlands Day (2 February), Flinders University environment and marine ecology experts have conducted an Adelaide-based survey of how residents connect with and rate the attributes of Adelaide's northern metropolitan coastal wetlands.
A calculation so complex that it takes twenty years to complete on a powerful desktop computer can now be done in one hour on a regular laptop. Physicist Andreas Ekström at Chalmers University of Technology, together with international research colleagues, has designed a new method to calculate the properties of atomic nuclei incredibly quickly.
HOUSTON - (Feb. 1, 2021) - Rice University engineers have discovered technology that could slash the cost of semiconductor electron sources, key components in devices ranging from night-vision goggles and low-light cameras to electron microscopes and particle accelerators.
In an open-access Nature Communications paper, Rice researchers and collaborators at Los Alamos National Laboratory (LANL) describe the first process for making electron sources from halide perovskite thin films that efficiently convert light into free electrons.
Lung cancer continues to be the leading cause of cancer death in Singapore and the world.
The World Conference on Lung Cancer, the largest international gathering of clinicians, researchers and scientists in the field of lung cancer - with more than 6,000 participants - was held from 28 January to 31 January 2021 as a worldwide virtual event hosted by Singapore.
A group of Singapore clinicians and scientists presented new data to enhance understanding and treatment of lung cancer in the Asian population at the conference.
COVID-19 mortality racial disparities in the U.S. are associated with social factors like income, education and internet access, according to a Rutgers study.
The study, published in the Journal of Racial and Ethnic Health Disparities, highlights the need for public health policies that address structural racism.
RICHLAND, Wash.?Unless radon gas is discovered in a home inspection, most people remain blissfully unaware that rocks like granite, metal ores, and some soils contain naturally occurring sources of radiation. In most cases, low levels of radiation are not a health concern. But some scientists and engineers are concerned about even trace levels of radiation, which can wreak havoc on sensitive equipment. The semiconductor industry, for instance, spends billions each year to source and "scrub" ultra-trace levels of radioactive materials from microchips, transistors and sensitive sensors.
An international team of researchers produced islands of amorphous, non-crystalline material inside a class of new metal alloys known as high-entropy alloys.
This discovery opens the door to applications in everything from landing gears, to pipelines, to automobiles. The new materials could make these lighter, safer, and more energy efficient.
The team, which includes researchers from the University of California San Diego and Berkeley, as well as Carnegie Mellon University and University of Oxford, details their findings in the Jan. 29 issue of Science Advances.
Researchers at the University of Arizona are developing a COVID-19 testing method that uses a smartphone microscope to analyze saliva samples and deliver results in about 10 minutes.
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Thrombosis, the clogging of blood vessels, is a major cause of heart attacks and embolism. Scientists have now engineered the first inhibitors of thrombin, a protease promoting thrombosis, that is three-fold efficient. In a study published in the journal Angewandte Chemie, the authors demonstrate that attacking three sites of the thrombin molecule is more efficient than attacking only two sites, which is the mode of action of many natural agents.
Researchers have completed the first ever multi-level hydrological tracking of the Yangtze River from the ground, air and space in order to investigate the properties of cloud formation during the mei-yu--an intense rainy season that forms part of East Asia's summer monsoon. The effort should permit greater understanding of the mei-yu precipitation process and thus enable much more accurate forecasts of this key meteorological phenomenon in the region.
New particle formation (NPF) is a major source of aerosol particles in the global atmosphere. In polluted megacities, such as Beijing, the role of new particle formation events and their contribution to haze formation through subsequent growth is still unclear.
Large parts of today's Sahara Desert were green thousands of years ago. Prehistoric engravings of giraffes and crocodiles testify to this, as does a stone-age cave painting in the desert that even shows swimming humans. However, these illustrations only provide a rough picture of the living conditions. Recently, more detailed insights have been gained from sediment cores extracted from the Mediterranean Sea off the coast of Libya.