In a study of 500 sourdough starters spanning four continents, scientists have garnered new insights into the environmental factors that contribute to each sourdough starter's microbial ecosystem, and how different types of microbes influence both a sourdough's aroma and how quickly the sourdough rises. The results may surprise sourdough enthusiasts. "We didn't just look at which microbes were growing in each starter," says Erin McKenney, co-author of the paper and an assistant professor of applied ecology at North Carolina State University. "We looked at what those microbes are doing, and how those microbes coexist with each other." "There have been quite a few small studies on microbial ecosystems in sourdough," says Benjamin Wolfe, co-author of the study and ...

In the next years, increasing use of electronic devices in consumables and new technologies for the internet of things will increase the amount of electronic scrap. To save resources and minimize waste volumes, an eco-friendlier production and more sustainable lifecycle will be needed. Scientists of Karlsruhe Institute of Technology (KIT) have now been the first to produce displays, whose biodegradability has been checked and certified by an independent office. The results are reported in the Journal of Materials Chemistry. (DOI: 10.1039/d0tc04627b) "For the first time, we have demonstrated that it is possible to produce sustainable displays that are largely based on natural ...

DALLAS (SMU) - A new study suggests children on the autism spectrum may be more likely to misinterpret healthy arguments between their parents as being negative, compared to children who aren't on the autism spectrum. That means they may be missing out on an opportunity to learn from their parents how to handle conflict constructively, researchers Naomi Ekas and Chrystyna Kouros said. "Children can learn how to best handle conflict from watching their parents," said Kouros, associate professor of psychology at SMU (Southern Methodist University). "Seeing parents ...

Manipulating individual electrons with the goal of employing quantum effects offers new possibilities and greater precision in electronics. However, these single-electron circuits are governed by the laws of quantum mechanics, meaning that deviations from error-free operation still occur - albeit (in the best possible scenario) only very rarely. Thus, insights into both the physical origin the and metrological aspects of this fundamental uncertainty are crucial for the further development of quantum circuitry. To this end, scientists from PTB and the University of Latvia have collaborated to develop a statistical testing methodology. Their results have been published in the journal Nature Communications. Single-electron circuits are already used as electric-current quantum standards and ...

A study performed by the Universitat Oberta de Catalunya (UOC) provided eight recommendations for improving the online technology to help with the treatment and diagnosis of neglected tropical diseases (NTDs). The analysis, presented in a recent open-access publication, was performed by UOC researchers Carme Carrion and Marta Aymerich from the eHealth Lab and Noemí Robles from the eHealth Center, together with José Antonio Ruiz Postigo from the World Health Organization and Oriol Solà de Morales from the Health Innovation Technology Transfer Foundation. In the study, the authors looked at the context of the existing ...

For mice, the earliest social memories can form at three days old and last into adulthood, scientists report on January 26 in the journal Cell Reports. They show that mouse pups prefer their mothers to unfamiliar mouse mothers as newborns and remember them after up to 100 days apart--although they prefer unfamiliar mouse mothers as adults. "I'm really interested in studying the development of social memory," says first author Blake J. Laham of Princeton University, "which is the memory we have for other individuals including certain facts and features about them." These early ...

Representatives from a network of women deans, chairs and distinguished faculty in biomedical engineering are calling upon the National Institutes of Health and other funding agencies to address disparities in allocating support to Black researchers. The group made the call to action in the Jan. 26, 2021, issue of the journal Cell. In examining the racial inequities and injustices that prevent Black faculty from equitably contributing to science and achieving their full potential, insufficient federal funding for research by Black scientists rose to the top as a key issue. According to studies of National Institutes ...

WASHINGTON, January 26, 2021 -- As the pandemic has continued to spread globally, studies indicate the COVID-19 virus may be contained in aerosols that can be generated and spread through breathing, coughing, sneezing, or talking by infected individuals. Researchers are increasingly focused on developing tools and methods to assist in decontaminating surfaces and spaces. While scientists have previously explored the use of electromagnetic energy to deactivate flu virus in bulk fluids, less work has been done to understand the role of nonionizing radiation, ...

What The Study Did: Survey data from school-age children and adolescents in Guangdong province, China, were used to assess self-reported psychological distress associated with the COVID-19 pandemic. Authors: Chichen Zhang, M.D., and Ruibin Zhang, Ph.D., of Southern Medical University in Guangzhou, and Xuefeng Yi, M.D., of the Health Publicity and Education Center of Guangdong Province, all in China, are the corresponding authors. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2020.35487) Editor's Note: The article includes funding/support disclosures. ...

Exposure to antibiotics in the first days of life is thought to affect various physiological aspects of neonatal development. A new study, led by Bar-Ilan University's Azrieli Faculty of Medicine, reveals that antibiotic treatment within 14 days of birth is associated with reduced weight and height in boys - but not girls -- up to the age of six. By contrast, the study showed significantly higher body mass index (BMI) in both boys and girls following antibiotic use after the neonatal period, and within the first six years of life. The findings, published in the journal Nature Communications ...

WASHINGTON, January 26, 2021 -- The positions of air inlets and outlets in confined spaces, such as elevators, greatly affect airborne virus transmission. In Physics of Fluids, by AIP Publishing, researchers from University of Nicosia in Cyprus show while air purifiers would be expected to help, they may actually increase the spread. Air quality in small spaces can quickly degrade without ventilation. However, adding ventilation will increase the rate at which air, possibly laden with viruses, can circulate in the small space. Elevator manufacturers have added air purifiers to take care of ...

An innovative approach to treating bone tumors - starving cancer cells of the energy they need to grow - could one day provide an alternative to a commonly used chemotherapy drug without the risk of severe side effects, suggests a new study from Washington University School of Medicine in St. Louis. Studying human cancer cells and mice, the researchers said that a two-drug combination targeting a tumor's energy sources could be as effective and less toxic than methotrexate, a long-used chemotherapy drug often given in high doses to treat osteosarcoma, a bone cancer. The study appears Jan. 26 in the journal Cell Reports. Osteosarcoma is ...

PITTSBURGH, Jan. 26, 2021 - The mechanism by which acute viral respiratory infections promote secondary bacterial growth and infection in the airways depends on iron-carrying extracellular sacs secreted by the cells lining the host's airways, report researchers from the University of Pittsburgh School of Medicine in a paper published today in Cell Reports. The sacs, or "vesicles," which carry iron bound to a protein called transferrin, associate with bacterial cells and supply them with essential nutrients, promoting the growth of expansive bacterial communities. The finding gives us a glimpse into how bacteria ...

Although the protein ITIH4 is found in large amounts in the blood, its function has so far been unknown. By combining many different techniques, researchers from Aarhus University have discovered that ITIH4 inhibits proteases in the innate immune system via an unknown mechanism. The research results have just been published in the prestigious scientific journal Science Advances. Proteases are enzymes that cleave other proteins. Most often, proteases occur in cascade networks, where a particular event triggers a chain reaction in which several proteases cleave and thereby activate each other. Most well known is probably the coagulation cascade, which causes clotting of our blood when a vessel is punctured. But a similar network of proteases called the complement ...

There are an estimated 40,000 to 50,000 species of micro-organism per gram of soil. Addition of certain microbes can tailor soil characteristics: removing contaminants, improving fertility and even making barren land available for farming. The Microbiology Society's report calls for increased access to research into soil health, promoting outreach activities in agricultural colleges and schools and showcasing work in non-academic outlets. This, say microbiologists, is the best way to collaborate with farmers to improve soil health and agricultural productivity. Tilling and excessive use of fertilisers have major effects on soil health. Microbiology can be used to help understand the impact of intensive farming and design feasible mitigation practices. The report ...

Authors from the German Center for Diabetes Research (DZD) presented data showing that the longevity gene mammalian Indy (mINDY) is involved in blood pressure regulation in the Journal of Clinical Investigation (JCI) insight. Reduced expression of mINDY, which is known to extend life span in lower organisms and to prevent from diet induced obesity, fatty liver and insulin resistance in mice, has now been shown to lower blood pressure and heart rate in rodents. The authors provided mechanistic insights for the underlying physiological mechanism based on in vivo data in a genetic knock out model as well as microarray and in vitro studies. Furthermore, ...

Children determine emotion by what they hear, rather than what they see, according to new research. The first-of-its-kind study, by Durham University's Department of Psychology, looked at how children pick up on the emotions of a situation. They found that whilst adults prioritised what they see, young children showed an auditory dominance and overwhelmingly prioritised what they could hear. The researchers say their findings could benefit parents currently managing home learning and professional educators by increasing their understanding of how young children pick up on what is going on around them. The research may also provide new avenues to understanding ...

Theories were introduced as far back as the 1960s about the possible existence of superheavy elements. Their most long-lived atomic nuclei could give rise to a so-called "island of stability" far beyond the element uranium. However, a new study, led by nuclear physicists at Lund University, shows that a 50-year-old nuclear physics manifesto must now be revised. The heaviest element found in nature is uranium, with a nucleus containing 92 protons and 146 neutrons. The nuclei of heavier elements become more and more unstable due to the increased number of positively charged protons. They therefore decay faster and faster, usu-ally within a fraction of a second. ...

As the world prepares to commemorate International Holocaust Remembrance Day on January 27th, communities and memorials around the world are addressing how to meaningfully commemorate the day while protecting public health and safety. The day marking the anniversary of the liberation of Auschwitz is ordinarily commemorated with hundreds of individual memorial events across the globe. This year, most of those events will be impossible for any sizable gathering of people due to COVID-19. With the goal of proposing relevant solutions to this challenge, Dr. Tobias Ebbrecht-Hartmann and research student Tom Divon of the Hebrew ...

ATLANTA - JANUARY 26, 2021 - A new study shows 4 in 10 cancer deaths are attributable to cigarette smoking in parts of the South region and Appalachia. For this study, appearing in Cancer Causes & Control, Farhad Islami, MD, PhD, and colleagues at the American Cancer Society examined the proportion of cancer deaths from 2013 to 2017 attributed to cigarette smoking in 152 metropolitan and micropolitan statistical areas (MMSAs). Data show the proportion of cancer deaths attributable to cigarette smoking was greater in men than in women in all evaluated MMSAs. In both sexes combined, the proportion of smoking-related cancer deaths ranged from 8.8% in Logan ...

The battle to stop false news and online misinformation is not going to end any time soon, but a new finding from MIT scholars may help ease the problem. In an experiment, the researchers discovered that fact-checking labels, when attached to online news headlines, actually work better after people read false headlines, compared to when they precede the headline or accompany it. "We found that whether a false claim was corrected before people read it, while they read it, or after they read it influenced the effectiveness of the correction," says David Rand, an MIT professor and co-author of a new paper detailing the study's results. Specifically, the researchers found, when "true" and "false" labels were shown immediately after participants in the experiment read headlines, ...

A new neural network developed by researchers at the University of Eastern Finland and Kuopio University Hospital enables an easy and accurate assessment of sleep apnoea severity in patients with cerebrovascular disease. The assessment is automated and based on a simple nocturnal pulse oximetry, making it possible to easily screen for sleep apnoea in stroke units. Up to 90% of patients experiencing a stroke have sleep apnoea, according to earlier studies conducted at Kuopio University Hospital. If left untreated, sleep apnoea can reduce the quality of life and rehabilitation of patients with stroke and increase ...

An estimated 48 million cases of foodborne illness are contracted in the United States every year, causing about 128,000 hospitalizations and 3,000 deaths, according to the Centers for Disease Control (CDC). In some instances, the source is well known, such as a batch of tainted ground beef that infected 209 people with E. Coli in 2019. But 80 percent of food poisoning cases are of unknown origin, making it impossible to inform consumers of hazardous food items. David Goldberg, assistant professor of management information systems at San Diego State University, wants to improve the traceability and ...

Overview: Phycocyanobilin (PCB) is a natural blue chromophore found in cyanobacteria. PCB is expected to be applied as food colorants and pharmaceuticals with anti-inflammatory and antioxidant properties. PCB also functions as the chromophore of photoswitches that control biological functions in synthetic biology. PCB is covalently bound to phycocyanin, a component of photosynthetic antenna protein, and its extraction requires specialized expertise, time-consuming procedures, and/or expensive reagents. A research group led by Assistant Professor Yuu Hirose at Toyohashi University of Technology succeeded in developing a highly efficient and rapid extraction method for PCB by treating cyanobacterial cells with alcohol ...

The use of online messaging and social media apps among Singapore residents has spiked during the COVID-19 pandemic, a Nanyang Technological University, Singapore (NTU Singapore) study has found. Three in four respondents (75%) said that their use of WhatsApp during the pandemic increased. This was followed by Telegram (60.3%), Facebook (60.2%) and Instagram (59.7%). Accompanying this spike is videoconferencing fatigue, found the NTU Singapore study, which surveyed 1,606 Singapore residents from 17 to 31 December last year. Nearly one in two Singapore residents (44%) said they felt drained from videoconferencing activities, which ...