MIAMI--A new study led by scientists at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science tracked large sharks in Miami and The Bahamas to understand how these migratory animals respond to major storms, like hurricanes. The researchers analyzed acoustic tag data from tiger sharks (Galeocerdo cuvier), bull sharks (Carcharhinus leucas), nurse sharks (Ginglymostoma cirratum), and great hammerheads (Sphyrna mokarran) before, during, and after Hurricane Matthew in 2016 and Hurricane Irma in 2017. They found that they behaved differently by species and location. For example, in response to ...

May 6, 2021 - With mass shootings and other seemingly meaningless acts of violence in the headlines all too frequently, strategies to assess the risk and reduce the potential for violent acts are sorely needed. The fourth in a series of five columns devoted to therapeutic risk management of violence - focusing on a method called chain analysis to identify and target pathways leading to violent thoughts and behaviors - appears in the May issue of the Journal of Psychiatric Practice. The journal is published in the Lippincott portfolio by Wolters Kluwer. An innovative model for therapeutic risk management of the potentially violent patient has been developed by Hal Wortzel, MD, and colleagues of ...

A program that provides ongoing support to patients with painful conditions and complex medication regimens may also help them avoid using potentially risky opioid pain medications, or reduce the amount they use, a new study finds. The study looked at people with a wide range of autoimmune disorders, including arthritis and psoriasis, who were taking an injected biologic medication to treat their symptoms and prevent painful flare-ups. Such treatment involves frequent self-injections on a strict schedule, special disposal of used supplies and often high out-of-pocket costs - which ...

DURHAM, N.C. - A study designed to enroll an equal number of Black and white men with advanced prostate cancer confirms key findings that have been evident in retrospective analyses and suggest potential new avenues for treating Black patients who disproportionately die of the disease. Researchers at Duke Cancer Institute enrolled 50 Black and 50 white men with advanced prostate cancer to test whether there were outcome differences on treatment with the hormone therapy abiraterone acetate plus the steroid prednisone. In retrospective data reviews, the Duke researchers had previously found racial differences in PSA responses among advanced prostate cancer patients. Publishing online in the journal Cancer, the researchers ...

"The overarching idea of this research project is to influence different biological processes at the cellular level (i.e., wound healing, brain synapses or nervous system responses) by developing timely engineering applications", explains 4D-BIOMAP's lead researcher, Daniel García González from the UC3M's Department of Continuum Mechanics and Structural Analysis. The so-called magneto-active polymers are revolutionising the fields of solid mechanics and materials science. These composites consist of a polymeric matrix (i.e., an elastomer) that contains magnetic particles (i.e., iron) that react mechanically ...

The study says differences in children's brains, which affect their sensitivity to pressure and rewards, and differences in the way they process information, make it more likely they will admit to crimes they didn't commit when incentivized to do so. These developmental vulnerabilities mean solicitors and barristers should get extra support to help them better support young people deciding whether to admit guilt. Dr Rebecca Helm, from the University of Exeter, who led the research, published in the Journal of Law and Society, said: "The criminal justice system relies almost exclusively on the autonomy of defendants, rather than accuracy, when justifying convictions ...

DURHAM, N.H.-- As climate change continues to trigger the rise in temperature, increase drier conditions and shift precipitation patterns, adapting to new conditions will be critical for the long-term survival of most species. Researchers at the University of New Hampshire found that to live in hotter more desert-like surroundings, and exist without water, there is more than one genetic mechanism allowing animals to adapt. This is important not only for their survival but may also provide important biomedical groundwork to develop gene therapies to treat human dehydration related illnesses, like kidney disease. "To reference a familiar phrase, it tells us that there is more than one way to bake a ...

Reducing net greenhouse gas emissions to zero as soon as possible and achieving "carbon neutrality" is the key to addressing global warming and climate change. The ocean is the largest active carbon pool on the planet, with huge potential to help achieve negative emissions by serving as a carbon sink. Recently, researchers found that adding a small amount of aluminum to achieve concentrations in the 10x nanomolar (nM) range can increase the net fixation of CO2 by marine diatoms and decrease their decomposition, thus improving the ocean's ability to absorb CO2 and sequester ...

Students struggling academically benefited most when schools around the world transitioned from classroom teaching to online learning in response to the COVID-19 pandemic, and the switch also didn't negatively impact higher achievers. A new study has analysed the impact of online learning during the pandemic by crunching data at three middle schools in China, which administered different educational practices for about 7 weeks during the country's Covid-19 lockdown. Online learning was shown to have a positive impact on overall student performance when compared to not receiving any support from school during lockdown, and the best results were achieved by ...

Australia's 'black summer' of bushfires was depicted on the front pages of the world's media with images of wildlife and habitat destruction, caused by climate change, while in Australia the toll on ordinary people remained the visual front-page focus. QUT visual communication researcher Dr TJ Thomson compared the front-page bushfire imagery of the Sydney Morning Herald over three months from November 10, 2019 to January 31 2020 with 119 front pages from international media from the start of January, when the world sat up and took notice, to January 31. "The international sample of front pages included the Americas and Europe (about 90 per cent) representing Australia's 'black summer'. Asia represented around 7 per cent of the international ...

Transitioning from fossil fuels to a clean hydrogen economy will require cheaper and more efficient ways to use renewable sources of electricity to break water into hydrogen and oxygen. But a key step in that process, known as the oxygen evolution reaction or OER, has proven to be a bottleneck. Today it's only about 75% efficient, and the precious metal catalysts used to accelerate the reaction, like platinum and iridium, are rare and expensive. Now an international team led by scientists at Stanford University and the Department of Energy's SLAC National Accelerator Laboratory has developed a ...

A cross-institutional collaboration has developed a technique to repartition carbon resources from carbohydrates to lipids in microalgae. It is hoped that this method can be applied to biofuel production. This discovery was the result of a collaboration between a research group at Kobe University's Engineering Biology Research Center consisting of Project Assistant Professor KATO Yuichi and Professor HASUNUMA Tomohisa et al., and Senior Researcher SATOH Katsuya et al. at the Takasaki Advanced Radiation Research Institute of the Quantum Beam Science Research Directorate ...

Scientists are calling for more stringent pesticide bans to lower deaths caused by deliberately ingesting toxic agricultural chemicals, which account for one fifth of global suicides. A NHMRC funded study, in which the University of South Australia analysed the patient plasma pesticide concentrations, has identified discrepancies in World Health Organization (WHO) classifications of pesticide hazards that are based on animal doses rather than human data. As a result, up to five potentially lethal pesticides are still being used in developing countries in the Asia Pacific, where self-poisonings account for up to two thirds of suicides. In ...

New research from the University of Virginia School of Medicine reveals why sleep can put people with epilepsy at increased risk of sudden death. Both sleep and seizures work together to slow the heart rate, the researchers found. Seizures also disrupt the body's natural regulation of sleep-related changes. Together, in some instances, this can prove deadly, causing Sudden Unexpected Death in Epilepsy, or SUDEP. "We have been trying to better understand the cardiac changes around the time of a seizure in patients with epilepsy. When we looked ...

Proteins are the workhorses of cells, responsible for almost all biological functions that make life possible. Understanding how specific proteins work is key to disease prevention and treatment, allowing us to lead longer, healthier lives. Yet scientists still know nothing or very little about thousands of proteins that exist in our bodies and their role in keeping us alive. Now researchers from Xi'an Jiaotong-Liverpool University have uncovered a new protein analysis tool - coined the Bacterial Growth Inhibition Screen (BGIS) - that could fast-track the process of assessing proteins. The tool allows for quick and efficient basic characterisation of protein function with no special equipment or cost involved. Dr Ferdinand Kappes of XJTLU's ...

It is now well known that carbon dioxide is the biggest contributor to climate change and originates primarily from burning of fossil fuels. While there are ongoing efforts around the world to end our dependence on fossil fuels as energy sources, the promise of green energy still lies in the future. Can something be done in the meantime to reduce the concentrations of CO2 in the atmosphere? It would, in fact, be great if the CO2 in the atmosphere could simply be adsorbed! Turns out, this is exactly what direct air capture (DAC), or the capture of CO2 under ambient conditions, aims to do. However, no such material with the ability to adsorb CO2 efficiently under DAC ...

In Alzheimer's disease, neurons in the brain die. Largely responsible for the death of neurons are certain protein deposits in the brains of affected individuals: So-called beta-amyloid proteins, which form clumps (plaques) between neurons, and tau proteins, which stick together the inside of neurons. The causes of these deposits are as yet unclear. In addition, a rapidly progressive atrophy, i.e. a shrinking of the brain volume, can be observed in affected persons. Alzheimer's symptoms such as memory loss, disorientation, agitation and challenging behavior are the consequences. Scientists at the DZNE led by Prof. Michael Wagner, head of a research group at the DZNE and senior ...

Determining safe yet effective drug dosages for children is an ongoing challenge for pharmaceutical companies and medical doctors alike. A new drug is usually first tested on adults, and results from these trials are used to select doses for pediatric trials. The underlying assumption is typically that children are like adults, just smaller, which often holds true, but may also overlook differences that arise from the fact that children's organs are still developing. Compounding the problem, pediatric trials don't always shed light on other differences that can affect recommendations for drug doses. There are many factors that limit children's participation in drug trials - for instance, some diseases simply ...

AURORA, Colo. (May 6, 2021) - Scientists examining the remains of 36 bubonic plague victims from a 16th century mass grave in Germany have found the first evidence that evolutionary adaptive processes, driven by the disease, may have conferred immunity on later generations of people from the region. "We found that innate immune markers increased in frequency in modern people from the town compared to plague victims," said the study's joint-senior author Paul Norman, PhD, associate professor in the Division of Personalized Medicine at the University of Colorado School of Medicine. "This suggests these markers might have evolved to resist the plague." The study, done in conjunction with the Max Planck Institute in Germany, was published online Thursday in the journal Molecular ...

Ultrasound is an indispensable tool for the life sciences and various industrial applications due to its non-destructive, high contrast, and high resolution qualities. A persistent challenge over the years has been how to increase the resolution of an acoustic endoscope without drastically increasing the footprint of the probe, or risking the robustness of the ultrasonic transducer. In recent years, a host of all-optical ultrasonic imaging techniques have emerged - which generally utilise pulsed lasers and optical cavities to excite and detect ultrasound waves - without sacrificing device footprint, sensitivity, or the integrity of the transducer. Thus far these powerful techniques have achieved imaging resolutions on microscopic-mesoscopic length ...

Researchers at the University of Eastern Finland have discovered previously unknown non-coding RNAs (ncRNAs) involved in regulating the gene expression of vascular endothelial growth factors (VEGF), the master regulators of angiogenesis. The study, conducted by the research groups of Associate Professor Minna Kaikkonen-Määttä and Academy Professor Seppo Ylä-Herttuala, provides a better understanding of the complex interplay of ncRNAs with gene regulation, which might open up novel therapeutic approaches in the future. The results were published in the Molecular and Cellular Biology Journal. Over the past years, the development of next generation ...

Researchers at Chinese Academy of Science and Osaka University show that, unlike the crystalline close packing of spheres, random close packing or jamming of spheres in a container can take place in a broad range of densities and anisotropies. Furthermore, they show that such diverse jammed states are all just marginally stable and exhibit common universal critical properties. Osaka, Japan - Scientists at the theoretical institutes, Chinese Academy of Science and Cybermedia Center at Osaka University performed extensive computer simulations to generate and examine random packing of spheres. They show that the "jamming" ...

A KAIST research team has developed a new technology that enables to process a large-scale graph algorithm without storing the graph in the main memory or on disks. Named as T-GPS (Trillion-scale Graph Processing Simulation) by the developer Professor Min-Soo Kim from the School of Computing at KAIST, it can process a graph with one trillion edges using a single computer. Graphs are widely used to represent and analyze real-world objects in many domains such as social networks, business intelligence, biology, and neuroscience. As the number of graph applications increases rapidly, developing and testing new graph algorithms is becoming more important than ever before. Nowadays, many industrial ...

Trust, safety and security are the most important factors affecting passengers' attitudes towards self-driving cars. Younger people felt their personal security to be significantly better than older people. The findings are from a Finnish study into passengers' attitudes towards, and experiences of, self-driving cars. The study is also the first in the world to examine passengers' experiences of self-driving cars in winter conditions. The findings were published in Transportation Research Part F: Traffic Psychology and Behaviour. The study was carried out in collaboration between the University of Eastern Finland and Tampere University. Self-driving cars face huge expectations in Europe and the United States, which is why passengers' ...

A new study has shown that most patients discharged from hospital after experiencing severe COVID-19 infection appear to return to full health, although up to a third do still have evidence of effects upon the lungs one year on. COVID-19 has infected millions of people worldwide. People are most commonly hospitalised for COVID-19 infection when it affects the lungs - termed COVID-19 pneumonia. Whilst significant progress has been made in understanding and treating acute COVID-19 pneumonia, very little is understood about how long it takes for patients to fully recover and whether changes within the lungs persist. In this new study, published in The Lancet Respiratory Medicine, researchers from the University of Southampton worked with collaborators ...