Machine learning unearths signature of slow-slip quake origins in seismic data

Combing through historical seismic data, researchers using a machine learning model have unearthed distinct statistical features marking the formative stage of slow-slip ruptures in the earth’s crust months before tremor or GPS data detected a slip in the tectonic plates. Given the similarity between slow-slip events and classic earthquakes, these distinct signatures may help geophysicists understand the timing of the devastating faster quakes as well.

The historical partnership that revolutionized battery research at Argonne

Argonne battery scientist Michael Thackeray highlights the ongoing research into manganese-based lithium-ion batteries, and how his work with Nobel Prize winner John B. Goodenough in the 80s has informed today’s studies.

UCI cyber-physical security researchers highlight vulnerability of solar inverters

Irvine, Calif., Aug. 18, 2020 – Cyber-physical systems security researchers at the University of California, Irvine can disrupt the functioning of a power grid using about $50 worth of equipment tucked inside a disposable coffee cup. In a presentation delivered at the recent Usenix Security 2020 conference, Mohammad Al Faruque, UCI associate professor of electrical engineering & computer science, and his team revealed that the spoofing mechanism can generate a 32 percent change in output voltage, a 200 percent increase in low-frequency harmonics power and a 250 percent boost in real power from a solar inverter.

Picture this: Employee fraud decreases when they see family photos

Displaying family photos in the workplace cuts down on employee fraud and other unethical behavior, new Washington University in St. Louis research finds. For instance, in one study the researchers conducted, participants who looked at pictures of family or friends filed expense reports claiming about $8 less on average than workers without pictures. While $8 may not seem like much, it can add up quickly.

Cool New Worlds Found in Our Cosmic Backyard

How complete is our census of the Sun’s closest neighbors? Astronomers using NSF’s NOIRLab facilities and a team of data-sleuthing volunteers participating in Backyard Worlds: Planet 9, a citizen science project, have discovered roughly 100 cool worlds near the Sun — objects more massive than planets but lighter than stars, known as brown dwarfs. Several of these newly discovered worlds are among the very coolest known, with a few approaching the temperature of Earth — cool enough to harbor water clouds.

Surprising Coral Spawning Features Revealed

When stony corals have their renowned mass spawning events, in sync with the moon’s cycle, colonies simultaneously release an underwater “cloud” of sperm and eggs for fertilization. But how do the sperm and eggs survive several hours as plankton, given threats from predators, microbes and stresses such as warming waters? A Rutgers-led team has discovered some surprising features in coral sperm and eggs (collectively called gametes), according to a study in the journal PeerJ.

Cold-weather accounts for almost all temperature-related deaths

With the number of extreme weather days rising around the globe in recent years due to global warming, it is no surprise that there has been an upward trend in hospital visits and admissions for injuries caused by high heat over the last several years. But cold temperatures are responsible for almost all temperature-related deaths, according to a new study published in the journal Environmental Research.

These drugs carry risks & may not help, but many dementia patients get them anyway, study finds

Nearly three-quarters of older adults with dementia have filled prescriptions for medicines that act on their brain and nervous system, but aren’t designed for dementia, a new study shows. That’s despite the special risks that such drugs carry for older adults — and the lack of evidence that they actually ease dementia-related behavior problems.

Using A Public Restroom? Mask Up!

Think you don’t need to worry about COVID-19 while using a public restroom? Researchers from Yangzhou University in China recently reported that flushing public restroom toilets can release clouds of virus-laden aerosols for you to potentially inhale. If that’s not cringeworthy enough, after running additional computer simulations, they’ve concluded that flushing urinals does likewise. In Physics of Fluids, the group shares its work simulating and tracking virus-laden particle movements when urinals are flushed.

Climate Change Impact on Green Energy Production

As the climate of the planet is changing, many researchers are looking to more renewable energy sources. In the Journal of Sustainable and Renewable Energy, researchers investigate whether the power generated by solar and wind farms would differ between current and future climates. The researchers focused on sites in Australia where variable renewable generators are located or are likely to be located in the future based on the Australian Energy Market Operator’s system plan.

Humid Air Can Extend Lifetime of Virus-Laden Aerosol Droplets

The novel coronavirus that causes COVID-19 is thought to spread through natural respiratory activities, but little is known about how the virus is transported through the air. Scientists report in Physics of Fluids on a study of how airflow and fluid flow affect exhaled droplets that can contain the virus. Their model includes a more accurate description of air turbulence that affects an exhaled droplet’s trajectory. Calculations with their model reveal, among other things, an important and surprising effect of humid air.

Trace Vapor Generator for Detecting Explosives, Narcotics

Trace vapor detection technologies are crucial for ensuring reliable and safe detection of explosives and illegal drugs. Researchers have developed a compact testing device called the Trace Vapor Generator for Explosives and Narcotics, which is portable and can be used for non-contact sampling of these vapors. In Review of Scientific Instruments, the team reports the TV-Gen can accurately generate trace vapors of low vapor pressure compounds and can produce vapors in complex backgrounds.

Evolution in real-time: How bacteria adapt to their hosts

Some bacteria become increasingly infectious when they have to move from cell to cell in order to survive. Bacteria that invade animal cells in order to multiply are widespread in nature. Some of these are  pathogens of humans and animals. In the environment, they are often found inside unicellular organisms. A research team led by Matthias Horn at the Centre for Microbiology and Environmental Systems Science at the University of Vienna has made use of  laboratory experiments to gain a better understanding of how these bacteria adapt to their host cell over time and become increasingly infectious under certain conditions.

Low-Cost Home Air Quality Monitors Prove Useful for Wildfire Smoke

Published recently in the journal Sensors, a new study by Berkeley Lab air quality scientists tested four models of low-cost air quality monitors during actual wildfire pollution events and found that their readings of PM2.5 – or particulate matter under 2.5 microns, which has been linked to respiratory and cardiovascular issues – were consistently higher than the reference monitor used by the regulatory agencies; however, since each monitor had a relatively consistent response to the smoke, it is possible to use the readings to estimate true PM2.5 levels. Overall, the researchers concluded that the monitors can provide actionable information.

Airing commercials after political ads actually helps sell nonpolitical products

About $7 billion reportedly will be spent this fall on television and digital commercials from political campaigns and political action committees, filling the airwaves with political ads many viewers dislike. Companies running ads immediately afterward have been concerned about the potential of a negative spillover effect on how they and their products and services are perceived. But new research from the Indiana University Kelley School of Business finds that the opposite is true. Contrary to mainstream thought, political ads instead yield positive spillover effects for nonpolitical advertisers.

Consideration of both the potential and constraints of reforestation is needed to achieve climate mitigation goals: NUS-led study

A recent study led by NUS researchers showed that practical considerations, beyond where trees could be planted, may limit the climate change mitigation potential of reforestation. Hence, there is a need to understand how these constraints operate to inform climate policies.

Wide Variation Across Hospitals in Nurse Staffing Is Threat to Public’s Health

According to a new study published today in BMJ Quality & Safety, many hospitals in New York and Illinois were understaffed right before the first surge of critically ill Covid-19 patients. The study, “Chronic Hospital Nurse Understaffing Meets Covid-19,” documented staffing ratios that varied from 3 to 10 patients for each nurse on general adult medical and surgical units. ICU nurse staffing was better but also varied significantly across hospitals.