In the race to stop the spread of COVID-19, a three-layer cloth mask that fits well can effectively filter COVID particles, says a group of UBC researchers. After testing several different mask styles and 41 types of fabrics, they found that a mask consisting of two layers of low-thread-count quilting cotton plus a three-ply dried baby wipe filter was as effective as a commercial non-surgical mask at stopping particles--and almost as breathable. The cloth masks filtered out up to 80 per cent of 3-micron particles, and more than 90 per cent of 10-micron particles. "We focused on particles larger than one micron because these are likely most important to COVID-19 transmission," explains researcher Dr. Steven Rogak, a professor of mechanical engineering who ...

The genus Ficus (figs) and their agaonid pollinating fig wasps are a classic example of coevolution. It represents perhaps the most extreme and ancient (about 75 million years) obligate pollination mutualism known. Previous studies have suggested that pollinator host-switching and hybridization existed in some fig taxa with genetic evidence based on relatively few genes. However, those cases were mainly treated as rare exceptions, and strict-sense coevolution was still treated as the dominate coevolution model for the codiversification of this "extreme" obligate pollination system with high species richness. Together with colleagues from 11 institutions from home and abroad, researchers from the Xishuangbanna Tropical Botanical ...

Scientists at Scripps Research have clarified the workings of a mysterious protein called Gαo, which is one of the most abundant proteins in the brain and, when mutated, causes severe movement disorders. The findings, which appear in Cell Reports, are an advance in the basic understanding of how the brain controls muscles and could lead to treatments for children born with Gαo-mutation movement disorders. Such conditions--known as GNAO1-related neurodevelopmental disorders--were discovered only in the past decade, and are thought to affect at least hundreds of children around the world. Children with the disease suffer from severe developmental ...

World-first 3D printed oesophageal stents developed by the University of South Australia could revolutionise the delivery of chemotherapy drugs to provide more accurate, effective and personalised treatment for patients with oesophageal cancer. Fabricated from polyurethane filament and incorporating the chemotherapy drug 5-fluorouracil (5-FU), the new oesophageal stents are the first to contain active pharmaceutical ingredients within their matrix . Their unique composition allows them to deliver up to 110 days of a sustained anti-cancer medication directly to the cancer site, restricting further tumour growth. Importantly, the capabilities of 3D printing enabling rapid creation of individually tailored stents with patient-specific geometries and drug dosages. PhD ...

The COVID-19 pandemic is a great example of the importance of access to the Internet and to digital health information. Unfortunately, historical disparities in health care appear to be reflected in computer ownership, access to the Internet and use of digital health information. However, few studies have qualitatively explored reasons for digital health information disparity, especially in older adults. A study led by Florida Atlantic University's Christine E. Lynn College of Nursing in collaboration with the Dana-Farber Cancer Institute and the University of Massachusetts Medical ...

A 30-year high in East African rainfall during 2018 and 2019 resulted in rising water levels and widespread flooding. The new study shows that emissions of methane - the second most important greenhouse gas - from flooded East African wetlands were substantially larger following these extreme rainfall events. The study, led by Dr Mark Lunt from the University of Edinburgh's School of GeoSciences, used data from two different satellites in combination with an atmospheric model to evaluate methane emissions from East Africa. This included data from the European TROPOMI satellite instrument, launched in 2017, which provides information about atmospheric methane at ...

A new technique has taken the first images of muon particle beams. Nagoya University scientists designed the imaging technique with colleagues in Osaka University and KEK, Japan and describe it in the journal Scientific Reports. They plan to use it to assess the quality of these beams, which are being used more and more in advanced imaging applications. Muons are charged particles that are 207 times the mass of electrons. They naturally form when cosmic rays strike atoms in the upper atmosphere, showering down onto every part of Earth's surface. They can penetrate through hundreds of meters of solids before being absorbed. Scientists have used naturally ...

Tsukuba, Japan - Although exercise is known to enhance cognitive function and improve mental health, the neurological mechanisms of this link are unknown. Now, researchers from Japan have found evidence of the missing link between aerobic fitness and cognitive function. In a study published in Medicine & Science in Sports & Exercise, researchers from the University of Tsukuba revealed that spontaneous eye blink rate (sEBR), which reflects activity of the dopamine system, could be used to understand the connection between cognitive function and aerobic fitness. The dopaminergic system is known to be involved in physical activity and exercise, and previous researchers have proposed that exercise-induced changes in cognitive function might be mediated by activity ...

After the Chernobyl disaster of 1986, the 2011 Fukushima Daiichi nuclear power plant (FDNPP) disaster was the second worst nuclear incident in history. Its consequences were tremendous for the Japanese people and now, almost a decade later, they can still be felt both there and in the rest of the world. One of the main consequences of the event is the release of large amounts of cesium-137 (137Cs)--a radioactive "isotope" of cesium--into the atmosphere, which spread farther away from the power plant through wind and rainfall. Considering the massive threat posed by 137Cs to the health of both humans and ecosystems, it is essential to understand how it has distributed and how much of it still lingers. This is why the ...

Tampa, FL (Feb. 3, 2021) -- A preclinical study by a END ...

The coronavirus pandemic forced states across the nation to transform the way their residents voted in 2020, ramping up get-out-the-vote messaging and allowing for more people than ever to vote by mail. But what's the best way to let residents know about new voting rules? And how much does something like voting by mail increase voter turnout overall? Political scientists Daniel Hopkins and Marc Meredith looked at these questions during Philadelphia's 2020 primary, and worked with city officials to run an experiment to see whether an inexpensive postcard campaign about mail-in voting would be effective. They partnered with Anjali Chainani, Nathaniel Olin, and Tiffany ...

It is important for patients to understand the information they need for making health decisions, yet studies have shown that a large segment of the population lacks the health literacy to do so. Health literacy refers to capacity of people to obtain, process, and understand health information needed for making health decisions. A researcher in the School of Information Sciences at the University of Illinois Urbana-Champaign is addressing this topic. "Many people have inadequate health literacy to support them in understanding health information and/or performing basic self-care activities," said Assistant ...

Key Takeaways: Airbnb does have an impact on housing prices and rents. Impact is stronger in areas with fewer owner-occupiers, such as vacation destination towns. Airbnb contributes to an increase in the supply of short-term rentals, while decreasing the long-term supply of rentals. CATONSVILLE, MD, February 2, 2021 - According to new research, the presence of an Airbnb property can actually contribute to an increase in housing prices and rental rates in a local neighborhood. But it depends on where the property is located. The study sought to assess the impact of home-sharing on residential house prices and ...

A type of novel molecular voltage sensor makes it possible to watch nerve cells at work. The principle of the method has been known for some time. However, researchers at the University of Bonn and the University of California in Los Angeles have now succeeded in significantly improving it. It allows the propagation of electrical signals in living nerve cells to be observed with high temporal and spatial resolution. This enables investigations into completely new questions that were previously closed to research. The study has now been published in the journal PNAS. When we smell a bottle of suntan lotion, electrical pulses ...

Hikers, soldiers and school children all know the burden of a heavy backpack. But now, researchers have developed a prototype that not only makes loads feel about 20% lighter, but also harvests energy from human movements to power small electronics. The new backpack, reported in ACS Nano, could be especially useful for athletes, explorers and disaster rescuers who work in remote areas without electricity, the researchers say. Backpacks are widely used in everyday life for the hands-free carrying of loads. Over time, however, walking or running with a heavy sack can cause back and neck pain. Also, backpackers ...

Environmentally conscious consumers try to "buy local" when food shopping. Now, a study of food raised around Chicago has shown that buying local can't provide all necessary nutrients for area residents, though it could fulfill their needs if some nutrients were supplied as supplements. The researchers report in ACS' Environmental Science & Technology that urban agriculture made little difference in reducing overall land area, and thus distance, required to supply all nutritional needs. As the U.S. population continues to flow to urban regions, consumers are moving farther from farms and croplands. This limits nutrient recycling and drives up emissions associated with transporting ...

Enveloped viruses have been detected in raw sewage and sludge, but scientists still don't fully understand the fate and infectivity of these viruses during water purification at treatment plants. Now, researchers reporting in ACS' Environmental Science & Technology have discovered that a standard water treatment technique, called iron (III) coagulation, and its electrically driven counterpart, iron (0) electrocoagulation, can efficiently remove and inactivate a model enveloped virus. Enveloped viruses have an outer coating of lipids and proteins that helps protect their genetic material. Typically, disrupting this coat inactivates the virus. Until now, most studies have investigated ...

Oxygen is essential for human life, but within the body, certain biological environmental conditions can transform oxygen into aggressively reactive molecules called reactive oxygen species (ROS), which can damage DNA, RNA, and proteins. Normally, the body relies on molecules called antioxidants to convert ROS into less dangerous chemical species through a process called reduction. But unhealthy lifestyles, various diseases, stress, and aging can all contribute to an imbalance between the production of ROS and the body's ability to reduce and eliminate them. The resulting excessive levels of ROS cause "oxidative stress," ...

ATLANTA - FEBRUARY 3, 2021 - New study finds more than half (56.4%) of cancer survivors in the United States reported having additional underlying medical conditions associated with severe COVID-19 illness. The report appearing in JNCI: The Journal of the National Cancer Institute, suggests that prevalence of these conditions among cancer survivors is nearly 40% higher than that in the general population. Cancer, and other underlying medical conditions, including chronic obstructive pulmonary disease, heart diseases, diabetes, chronic kidney disease, and obesity, are associated with increased risk of severe COVID-19 illness. For this study, investigators Changchuan (Charles) ...

A can of Red Bull next to the computer mouse, a bag of potato chips next to the keyboard - that's how many people imagine nutrition in eSports. "The energy drink is indeed part of the diet for many," says Professor Ingo Froböse, head of the Institute of Movement Therapy and movement-oriented Prevention and Rehabilitation at the German Sport University Cologne, "but overall, eSports players actually eat better than the general population." This is the result of the third eSport study by the German Sport University Cologne, which was presented in Cologne on February 3, 2021. The two previous eSport studies focused on training ...

As the sea ice shrinks in the Arctic, the plankton community that produces food for the entire marine food chain is changing. New research shows that a potentially toxic species of plankton algae that lives both by doing photosynthesis and absorbing food may become an important player in the Arctic Ocean as the future sea ice becomes thinner and thinner. Microscopic plankton algae, invisible to the naked eye, are the foundation of the marine food web, feeding all the ocean´s living creatures from small crustaceans to large whales. Plankton ...

A study of factors associated with Post-Traumatic Stress Disorder (PTSD) has led to a number of novel findings linking nutrition to experiences of PTSD. Notable among them is the discovery that Canadians, between the ages of 45 and 85, were less likely to exhibit PTSD if they consumed an average of two to three fiber sources daily. "It is possible that optimal levels of dietary fiber have some type of mental health-related protective effect," says Karen Davison, Director of the Nutrition Informatics Research Group and Health Science Program Faculty Member at Kwantlen Polytechnic University. "This may be due to the communication network that connects the gut and brain via short chain fatty acids (SCFAs), which are metabolic byproducts of bacterial ...

Eating too much fat and sugar as a child can alter your microbiome for life, even if you later learn to eat healthier, a new study in mice suggests. The study by UC Riverside researchers is one of the first to show a significant decrease in the total number and diversity of gut bacteria in mature mice fed an unhealthy diet as juveniles. "We studied mice, but the effect we observed is equivalent to kids having a Western diet, high in fat and sugar and their gut microbiome still being affected up to six years after puberty," explained UCR evolutionary physiologist Theodore Garland. A paper describing the study has recently been published in the END ...

A brain-related visual impairment, which until recently was thought to be rare, may affect one in every 30 children according to new research investigating the prevalence of Cerebral Visual Impairment [CVI]. The University of Bristol-led findings published today [3 February] in Developmental Medicine and Child Neurology, aim to raise awareness of CVI among parents and teachers to help them identify signs of the condition earlier. The brain is just as important as the eyes when it comes to seeing, and many vision problems are caused by areas of the brain that are needed for sight not working properly and cannot be resolved by wearing glasses. Brain-related vision ...

During the summer of 2019, a global team of experts put their heads together to define the key questions facing the UK government when it comes to biological security. Facilitated by the Centre for Existential Risk (CSER) at the University of Cambridge and the BioRISC project at St Catharine's College, the group of 41 academics and figures from industry and government submitted 450 questions which were then debated, voted on and ranked to define the 80 most urgent. The final line-up includes major questions on future disease threats, including what role shifts in climate and land use might play, and whether data from social media platforms should be used to help detect the earliest signs of emerging pathogens. Other ...