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Germicidal UV lamps: A trade-off between disinfection and air quality

Germicidal UV lamps: A trade-off between disinfection and air quality

When winter chill strikes, people stay indoors more often, giving airborne pathogens—such as SARS-CoV-2 and influenza—prime opportunities to spread. Germicidal ultraviolet (GUV) lamps can help disinfect circulating air, but their UVC wavelengths could also transform airborne compounds into potentially harmful substances.

Phys.org - News And Articles On Science And Technology-

Mammals were already poised to take over the world before the dino-killing asteroid struck

Mammals were already poised to take over the world before the dino-killing asteroid struck

Ancient mammals were better adapted than nonavian dinosaurs to survive the Chicxulub asteroid impact.

Live Science: The Most Interesting Articles-

The secret to STEM diversity may lie in peer mentorship

The secret to STEM diversity may lie in peer mentorship

Researchers at the University of Massachusetts Amherst recently published a paper in Nature Communications showing that when first-year female STEM students are mentored by student peers, the positive ripple effect lasts throughout their undergraduate years and into their postgraduate lives, enhancing the mentee's subjective experience as well as objective academic outcomes.

Phys.org - News And Articles On Science And Technology-

Research team develops a wearable dataset for predicting in-class exam performance

Research team develops a wearable dataset for predicting in-class exam performance

Stress has a negative impact on physical health, reduces work productivity, and results in significant annual costs for industries and healthcare. While high stress is known to raise the risk of cardiovascular disease and have negative effects on mental health, It also has key effects on the ability of one to complete tasks by both excessively high or excessively low stress. There has been growing research interest on understanding how real-world stress impacts our body and performance, at work and across life activities.

Phys.org - News And Articles On Science And Technology-

A Janus carbon electrocatalyst can balance intrinsic activity and electronic conductivity

A Janus carbon electrocatalyst can balance intrinsic activity and electronic conductivity

Carbon-based electrocatalysts are considered as promising alternatives to the state-of-the-art precious metal catalysts. Heteroatom doping can effectively create highly active catalytic centers, but unfortunately, result in lower electronic conductivity and thus hinder the electrocatalysis process.

Phys.org - News And Articles On Science And Technology-

Sharing is caring with fire ant venom

Sharing is caring with fire ant venom

Venom is associated with being harmful, but red imported fire ants are using their venom for its medicinal benefits by sharing the toxic substance with their nestmates, according to a study published in the Journal of Insect Physiology.

Phys.org - News And Articles On Science And Technology-

Scientists discover shark graveyard at the bottom of the ocean

Scientists discover shark graveyard at the bottom of the ocean

Scientists on CSIRO research vessel (RV) Investigator have made some exciting finds during recent voyages, including collecting a specimen of a new species of shark and discovering a shark graveyard in the deep ocean.

Phys.org - News And Articles On Science And Technology-

Squeezing microwave fields by magnetostrictive interaction

Squeezing microwave fields by magnetostrictive interaction

Squeezed states of the electromagnetic field find many important applications in quantum information science and quantum metrology. Dr. Jie Li et al. at Zhejiang University put forward a new mechanism for preparing microwave squeezed vacuum states using a cavity magnomechanical system.

Phys.org - News And Articles On Science And Technology-

How karst caves can be used as a terrestrial simulation platform to test and design human bases in lunar lava tubes

How karst caves can be used as a terrestrial simulation platform to test and design human bases in lunar lava tubes

If human beings want to survive on the other planets for a long time, they must first find or set up a safe, stable, and long-term shelter. Lunar lava tubes are geological structures on the moon discovered in recent years. They take the form of hollow pipe-shaped caves formed on the surface of the planet by volcanic activity.

Phys.org - News And Articles On Science And Technology-

Martian dust devil analogues in the Mojave Desert

Martian dust devil analogues in the Mojave Desert

In the Mojave Desert, the sun beats down on the ground and makes pockets of low pressure. Cool air rushes into these areas, where it warms and rises, creating vortices that pick up dust. These types of dust devils aren't limited to Earth: They are found on Mars at sizes reaching 1,600 meters in diameter.

Phys.org - News And Articles On Science And Technology-

Study unravels the role of DNA methylation in oceanic microbial communities

Study unravels the role of DNA methylation in oceanic microbial communities

DNA methylation is a biological process through which methyl groups are added to the DNA (genetic material). It is used as an epigenetic, i.e., a non-genetic strategy by prokaryotes to perform an array of functions such as gene regulation, repair, and protection against viral invasion using restriction-modification (RM) systems, which function as prokaryotic immune systems.

Phys.org - News And Articles On Science And Technology-

U.S. Proposes Global Green Steel Club That Would Put Tariffs on China

U.S. Proposes Global Green Steel Club That Would Put Tariffs on China

A concept paper sent to the European Union suggests a new trade approach to promote metal made with less carbon emissions.

The New York Times-

Significantly elevated particulate air pollution concentrations found in the Copenhagen Metro

Significantly elevated particulate air pollution concentrations found in the Copenhagen Metro

A new study have found disturbingly high concentrations of small particles in the air in the Copenhagen Metro.

Phys.org - News And Articles On Science And Technology-

Linking African winds to Atlantic storms

Linking African winds to Atlantic storms

High above the northern tropical countries of Africa, in warmer months, waves of low pressure can form in the atmosphere and blow westward toward the Atlantic. When these African easterly waves reach the ocean, tropical cyclones—including hurricanes—may arise.

Phys.org - News And Articles On Science And Technology-

People continue to matter, as accounting evolves

People continue to matter, as accounting evolves

The role of the auditing profession is crucial for the proper functioning of capital and debt markets: one of the primary duties of auditors is to ensure the compliance of organizations' financial accounts to the law. And as the complexity of modern times increases, the potential of the auditing profession to add value is evident.

Phys.org - News And Articles On Science And Technology-

Futuristic fields: Europe's farm industry on cusp of robot revolution

Futuristic fields: Europe's farm industry on cusp of robot revolution

From oxen to horses to tractors to robots: the European farm industry is poised to undergo another innovative disruption—this time brought about by artificial intelligence.

Phys.org - News And Articles On Science And Technology-

Hydrometeorological factors study: Don't forget moisture in climate-carbon cycle responses

Hydrometeorological factors study: Don't forget moisture in climate-carbon cycle responses

The land carbon turnover times shape the response of the land surface to changes in climate. Therefore, understanding and quantifying the carbon turnover's temperature sensitivity is key in the context of climate change.

Phys.org - News And Articles On Science And Technology-

Rainwash eDNA provides minimally invasive method to assess tree canopy invertebrate diversity

Rainwash eDNA provides minimally invasive method to assess tree canopy invertebrate diversity

Tree-climbing, cranes, chemical knockdown—collecting samples from the canopies used to be very time-consuming. Scientists from the UDE's working group "Aquatic Ecosystem Research" led by Prof. Dr. Florian Leese now had a brilliant idea: Shortly before a forecast downpour, they placed four rain samplers beneath oaks, beeches, pines, and larches in the Diersfordter Wald and in the Großer Veen on the Lower Rhine region.

Phys.org - News And Articles On Science And Technology-

Soil in midwestern US is eroding 10 to 1,000 times faster than it forms, study finds

Soil in midwestern US is eroding 10 to 1,000 times faster than it forms, study finds

In a discovery that has repercussions for everything from domestic agricultural policy to global food security and the plans to mitigate climate change, researchers at the University of Massachusetts recently announced that the rate of soil erosion in the Midwestern US is 10 to 1,000 times greater than pre-agricultural erosion rates. These newly discovered pre-agricultural rates, which reflect the rate at which soils form, are orders of magnitude lower than the upper allowable limit of erosion set by the U.S. Department of Agriculture (USDA).

Phys.org - News And Articles On Science And Technology-

Rust-coated irrigation pipes hint at lack of nitrate in groundwater

Rust-coated irrigation pipes hint at lack of nitrate in groundwater

"Oh, we don't have to worry about that area. They have red pivots."

Phys.org - News And Articles On Science And Technology-

Researchers develop new 'raspberry-shaped' nanoparticle for precision drug delivery

Researchers develop new 'raspberry-shaped' nanoparticle for precision drug delivery

A newly discovered technique, reported in the journal Nanoscale, offers a low-cost way to enhance the effectiveness of existing drugs.

Phys.org - News And Articles On Science And Technology-

A husband-and-wife team solve the mystery of how worms develop their gut

A husband-and-wife team solve the mystery of how worms develop their gut

Were it not for the COVID-19 pandemic, an important discovery about the development of nematodes—elongated cylindrical worms—might not have been made.

Phys.org - News And Articles On Science And Technology-

Circular bioplastics offer solution for climate crisis and growing resource consumption

Circular bioplastics offer solution for climate crisis and growing resource consumption

A circular bioeconomy can dramatically rein in the fast-growing plastic sector's climate, pollution, and resource consumption impacts. Under current policies, global plastic production will likely triple by the year 2100. Today, the plastic sector is responsible for almost 5% of all greenhouse gas emissions.

Phys.org - News And Articles On Science And Technology-

New 'capsules' aim to deliver more effective targeted cancer drug therapies

New 'capsules' aim to deliver more effective targeted cancer drug therapies

Australian and New Zealand researchers have developed tiny metal "containing capsules" for targeted delivery of anti-cancer drugs only to cancer cells.

Phys.org - News And Articles On Science And Technology-

Hurricane Season Ends, Marked by Quiet August and Deadly September

Hurricane Season Ends, Marked by Quiet August and Deadly September

The six-month total of 14 named storms was about average. But two late-season hurricanes proved catastrophic in Florida and Puerto Rico.

The New York Times-