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Category: Biomedical Engineering

Carbon-based materials that can be used as electrodes compatible with CMOS circuitry

An on-chip carbonized electrode microstructure from a scanning electron microscope. Credit: ORNL, U.S. Dept. of Energy Scientists at Oak Ridge National Laboratory and the University of Tennessee designed and demonstrated a method to make carbon-based materials that can be used as electrodes compatible with a specific semiconductor circuitry. The work bridges nanoscale 3-D printing and widely available processes for complementary metal-oxide-semiconductor, or CMOS, technologies to enable biosensors for biomedical applications. 3-D printing electrodes on CMOS circuitry from a polymer precursor…

Harvesting vegetation on riparian buffers barely reduces water-quality benefits — ScienceDaily

Allowing farmers to harvest vegetation from their riparian buffers will not significantly impede the ability of those streamside tracts to protect water quality by capturing nutrients and sediment — and it will boost farmers’ willingness to establish buffers. That is the conclusion of Penn State College of Agricultural Sciences researchers, who compared the impacts of six riparian buffer design scenarios over two, four-year crop rotations in two small central and southeastern Pennsylvania watersheds. Two of the buffer scenarios included the…

Biomedical sciences researchers find new way to prevent and cure rotavirus, other viral infections — ScienceDaily

A combination of two substances secreted by the immune system can cure and prevent rotavirus infection, as well as potentially treat other viral infections that target epithelial cells, which cover body surfaces such as skin, blood vessels, organs and the urinary tract, according to researchers in the Institute for Biomedical Sciences at Georgia State University. Rotavirus, which causes severe, life-threatening diarrhea in young children and moderate gastrointestinal distress in adults, leads to thousands of deaths in children annually, particularly in…

Faced with shortages, researchers combine heat and humidity to disinfect N95 masks — ScienceDaily

As the COVID-19 pandemic swept around the world early this year, shortages of protective equipment such as N95 masks left healthcare workers little choice but to reuse the masks they had — increasing the risk of infection for both them and their patients. Now, researchers at the Department of Energy’s SLAC National Accelerator Laboratory, Stanford University and the University of Texas Medical Branch may have a solution: Using a combination of moderate heat and high relative humidity, the team was…

The cardboard crash helmet

Credit: Pixabay/CC0 Public Domain In the age of plastic waste, the environmentally conscious are hoping to replace many of the common materials, such as expanded polystyrene in everyday objects with sustainable and recyclable materials. Now, researchers in China report successful crash tests of a new bicycle safety helmet that uses honeycombed and corrugated cardboard instead of polymer foam to provide protection. The team describes details of the design, its environmental benefits and the positive results from crash-test simulations. Bei Li,…

Kim Awarded Chang-Lin Tien Scholarship

Chang-Lin Tien scholarship recipient James Kim Jr. James Kim Jr., a senior biomedical engineering student from St. Louis, was awarded a Chang-Lin Tien Scholarship. This scholarship, given by the UM System, is meant “to support exceptional, civic-minded students”. “Winning the award really reinforced my drive for what I have been doing in terms of civic leadership,” Kim said. During his sophomore year, Kim felt a larger obligation to get more involved in civic activities. Kim did so by volunteering for…

Treatment for canine ocular condition using turmeric — ScienceDaily

Researchers at Texas A&M University have produced a therapeutic derived from turmeric, a spice long-praised for its natural anti-inflammatory properties, that shows promise in decreasing ocular inflammation in dogs suffering from uveitis, an inflammation of the eye that leads to pain and reduced vision. Uveitis — a common condition in dogs, humans, and other species — can have many causes, often occurring secondary to infectious diseases cancer, and autoimmune diseases; it also is found in patients with longstanding cataracts and…

Genomic analysis reveals many animal species may be vulnerable to SARS-CoV-2 infection — ScienceDaily

Humans are not the only species facing a potential threat from SARS-CoV-2, the novel coronavirus that causes COVID-19, according to a new study from the University of California, Davis. An international team of scientists used genomic analysis to compare the main cellular receptor for the virus in humans — angiotensin converting enzyme-2, or ACE2 — in 410 different species of vertebrates, including birds, fish, amphibians, reptiles and mammals. ACE2 is normally found on many different types of cells and tissues,…

Nasal delivery produces more widespread immune response than intramuscular injection — ScienceDaily

Scientists at Washington University School of Medicine in St. Louis have developed a vaccine that targets the SARS-CoV-2 virus, can be given in one dose via the nose and is effective in preventing infection in mice susceptible to the novel coronavirus. The investigators next plan to test the vaccine in nonhuman primates and humans to see if it is safe and effective in preventing COVID-19 infection. The study is available online in the journal Cell. Unlike other COVID-19 vaccines in…

Dynamic kirigami shoe grip designed to reduce risks of slips and falls

a, Inspiration from friction-enhancing strategies in animals: cheetah with semi-retractable claws (left), oxpecker with sharp claws in opposing directions (middle) and snake with scales that are oriented to increase friction (right). b, Kirigami for friction modulation in footwear. Steel kirigami surfaces were attached to the shoe soles (middle). The undeformed (top) and deformed (bottom) configurations of the kirigami shoe grip are illustrated. The spikes are activated (shown in the magnified view, bottom right) through changes in the curvature of the…