When sailing along on the seas and you suddenly spot a porpoise's fin in the distance, chances are that you have only encountered a single animal. Porpoises are most often seen alone, but new research now suggests that they also roam in groups - and even enter into a sophisticated collaboration when hunting. The way they collaborate surprises us, because the common perception among biologists is that porpoises roam and hunt alone, says Associate Professor Magnus Wahlberg, who is an expert in marine mammals and heads the Marine Biological Research Centre at the University of Southern Denmark (SDU). Drone footage has revealed group hunting among porpoises coming together to hunt schools of fish. The research team has recorded almost 44 hours of drone footage from the waters around ...

Men who suffer sensory loss, particularly hearing loss, are more likely to be physically inactive and obese than women, according to a new study published in the European Journal of Public Health. Researchers analysed data from more than 23,000 Spanish adults, and examined associations with physical inactivity and obesity in people with vision and hearing loss, and explored differences between men and women. Results suggest inactive people with hearing loss were 1.78 times more likely to be obese compared to those who did not have any hearing loss. In people who had difficulty seeing, the odds ratio is slightly smaller, with a likelihood ...

Systematic literature review provides evidence base for new therapeutic avenues in vasculitis Researchers have reviewed all clinical trials of targeted drugs used in the treatment of vasculitis. With this, they propose a completely mechanistic categorisation of these diseases, which may in time provide better treatment. Diseases which cause inflammation of the blood vessels are presently categorised according to the size of the blood vessels involved. But it would make more sense - and ultimately end with better treatment - if the diseases were categorised based on the causes of the inflammation. This is shown by a systematic literature review of clinical trials in vasculitis, which researchers from Aarhus ...

Astrophysicists from the University of Bath have developed a new method for pinpointing the whereabouts of extremely rare extragalactic objects. They hope their technique for finding 'changing-look quasars' will take scientists one step closer to unravelling one of greatest mysteries of the universe - how supermassive black holes grow. Quasars are believed to be responsible for regulating the growth of supermassive black holes and their host galaxies. A quasar is a region of spectacular luminosity at the centre of a galaxy, powered by a supermassive black hole - the largest type of black hole, with a mass that exceeds that of our sun by millions or billions. There is a supermassive black hole ...

When it comes to climate change, policymakers may fail to see the trees for the forest. Turns out that the trees may be the answer after all, according to a study published by authors from more than seven countries on June 3rd in Nature Climate Change. "Climate change and biodiversity loss are two major environmental challenges," said paper author Akira S. Mori, professor at Yokohama National University. "But the vast majority of attention has been paid to one unidirectional relationship -- climate change as a cause and biodiversity loss as a consequence." Mori and his co-authors argue that climate change and species ...

Tuesday, 8 June 2021: A study by RCSI indicates that exercise is probably the most effective short-term treatment for depression in people with coronary heart disease, when compared to antidepressants and psychotherapy or more complex care. The study, led by researchers at RCSI University of Medicine and Health Sciences, is published in the June edition of Psychosomatic Medicine. This is the first systematic review to compare treatments for depression in those with coronary disease and the findings provides valuable clinical information to help doctors determine the best treatment plan for patients. The researchers reviewed treatment trials which investigated antidepressants, psychotherapy, ...

Around the globe, software-intensive organisations shift from plan-based development processes to Agile ones, intending to focus more on team interaction, better products, customers' needs, and readiness to change. But how do these organisations succeed with large-scale Agile software transformations - and how do the success factors relate? This has been discussed in the scientific community for several years. Now, Associate Professor Daniel Russo from Department of Computer Science, Aalborg University presents a long-term study, which sheds even more light on the ...

Rising unemployment, inadequate benefits and low paid work are the main causes of poverty and destitution in Stoke-on-Trent according to the findings of a new study. The research carried out by Staffordshire University and Citizens Advice Staffordshire North & Stoke-on-Trent, and funded through Research England's Strategic Priorities Fund, aims to understand the impact COVID-19 is having on residents in the city. The report includes case studies of people who have turned to Citizens Advice and Alice Charity's Foodbank after finding themselves unable to work through the pandemic and facing increasing debt or struggling to claim benefits. Post ...

Lanthanides are rare-earth heavy metals with useful magnetic properties and a knack for emitting light. Researchers had long assumed that lanthanides' toxicity risk was low and therefore safe to implement in a number of high-tech breakthroughs we now take for granted: from OLEDs (organic light-emitting displays)¬¬ to medical MRIs and even hybrid vehicles. In recent years, however, some scientists have questioned lanthanides' safety. In matters concerning health care, for example, some MRI patients have attributed a litany of side effects, including ...

Most fish rely on water to feed, using suction to capture their prey. A new study, however, shows that snowflake morays can grab and swallow prey on land without water thanks to an extra set of jaws in their throats. After a moray eel captures prey with its first set of jaws, a second set of "pharyngeal jaws" then reaches out to grasp the struggling prey and pull it down into the moray's throat. Rita Mehta, an associate professor of ecology and evolutionary biology at UC Santa Cruz, first described this astonishing feeding mechanism in a 2007 Nature paper. The new study, published June 7 in the Journal of Experimental Biology, shows that these pharyngeal jaws enable ...

Forty years ago, the first cases of HIV/AIDS in the U.S began to raise public awareness- but new research highlights the struggle people living with the disease still face against stigma, discrimination and negative labelling in their own families, communities and even amongst healthcare professionals. A new study by Flinders University researchers interviewed 20 HIV healthcare providers including doctors, nurses, and counsellors in Yogyakarta and Belu districts, Indonesia to examine their experiences when treating patients with HIV. Their responses indicated admission of ...

A trial using mice has shown that a diet high in sugar from childhood could lead to significant weight gain, persistent hyperactivity and learning impairments Many people on 'western' diets consume four times more the sugar recommended by the World Health Organisation (WHO) Reducing sucrose intake in mice by four-fold prevented sugar-induced increase in weight gain, supporting the WHO's recommendations of 25g per person a day. Children who consume too much sugar could be at greater risk of becoming obese, hyperactive, and cognitively impaired, as adults, according to the results of a new study of mice led by ...

Propylene oxide (PO) is one of the important propylene derivatives with high reactivity, which is used extensively as raw material for the manufacture of numerous commercial chemicals. The titanosilicate-catalyzed hydrogen peroxide propylene oxide process (HPPO) is considered to be most advantageous because it is highly economical and ecofriendly, giving only H2O as the theoretical byproduct and achieving high PO selectivity under mild reaction conditions. The industrial HPPO process is generally carried out in a fixed-bed reactor using the shaped titanosilicate catalysts. Unfortunately, the inert and non-porous binders in shaping ...

The geometric isolation of metal species in single-atom catalysis (SACs) not only maximizes the atomic utilization efficiency, but also endows SACs with unique selectivity in various transformations. The coordination environment of isolated metal atoms in SACs determines the catalytic performance. However, it remains challenging to modulate the coordinative structure while still maintain the single-atom dispersion. Recently, a research group led by Prof. ZHANG Tao and Prof. WANG Aiqin from the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences fabricated Ru1/NC ...

CHICAGO --- Having trouble falling or staying asleep may leave you feeling tired and frustrated. It also could subtract years from your life expectancy, according to a new study from Northwestern Medicine and the University of Surrey in the United Kingdom (UK). The effect was even greater for people with diabetes who experienced sleep disturbances, the study found. Study participants with diabetes who experienced frequent sleep disturbances were 87% more likely to die of any cause (car accident, heart attack, etc.) during the 8.9-year study follow-up period compared to people without diabetes or sleep disturbances. They were 12% more likely to die over this period than those who had diabetes but not frequent sleep disturbances. "If you don't have diabetes, your sleep ...

In a paper published by the Journal of Sleep Research, researchers reveal how they examined data* from half a million middle-aged UK participants asked if they had trouble falling asleep at night or woke up in the middle of the night. The report found that people with frequent sleep problems are at a higher risk of dying than those without sleep problems. This grave outcome was more pronounced for people with Type-2 diabetes: during the nine years of the research, the study found that they were 87 per cent more likely to die of any cause than people without diabetes ...

Durham, NC - Critically ill COVID-19 patients treated with non-altered stem cells from umbilical cord connective tissue were more than twice as likely to survive as those who did not have the treatment, according to a study published today in STEM CELLS Translational Medicine. The clinical trial, carried out at four hospitals in Jakarta, Indonesia, also showed that administering the treatment to COVID-19 patients with an added chronic health condition such as diabetes, hypertension or kidney disease increased their survival more than fourfold. All 40 patients who took part in the double-blind, controlled, ...

A new study from the University of California, Davis and the Icahn School of Medicine at Mount Sinai confirms that surgical masks effectively reduce outgoing airborne particles from talking or coughing, even after allowing for leakage around the edges of the mask. The results are published June 8 in Scientific Reports. Wearing masks and other face coverings can reduce the flow of airborne particles that are produced during breathing, talking, coughing or sneezing, protecting others from viruses carried by those particles such as SARS-CoV2 and influenza, said Christopher Cappa, professor ...

Of all the different types of cancer known, a subtype of pancreatic cancer called pancreatic ductal adenocarcinoma (PDAC) is among the most aggressive and deadly. This disease begins in the cells that make up certain small ducts in the pancreas and progresses silently, usually causing no symptoms until advanced tumors actually obstruct these ducts or spread to other places. PDAC is not only difficult to diagnose, but also very unresponsive to available treatments. In particular, researchers have noted that PDAC cells can usually survive radiotherapy through mechanisms that remain largely unknown. Part of the Radiation and Cancer Biology ...

A new physiological measurement of heart function developed at UVA Health could improve survival for people with heart failure by identifying high-risk patients who require tailored treatments, a new study suggests. The study is the first to show a survival benefit from wireless pressure monitoring sensors implanted in the pulmonary arteries. Pulmonary artery proportional pulse pressure, or PAPP, is a new measure of heart function, developed at UVA, that can identify patients at very high risk of hospitalization or death from systolic heart failure or pulmonary hypertension (high blood pressure in the heart and ...

Tropical cyclones (TCs) are humbling and powerful forces of nature that can have tremendous impacts on people and human populations. Meteorologists have strived to improve TC forecasting skill, hoping to save lives. In the past few decades, TC track forecasts over the western North Pacific (WNP) have progressed considerably. However, TC intensity forecasts have improved insignificantly, with only a 3-5 day lead time. Therefore, improving TC intensity forecast skill and extending lead forecast time are important and urgent issues. To address this critical problem, a research group led by Prof. Ruifen ZHAN from the Department of Atmospheric and Ocean Sciences/Institute of Atmospheric Sciences at Fudan University, along with the Shanghai Typhoon Institute of China Meteorological ...

The incidence rate of lung adenocarcinoma (LUAD) is increasing gradually and the mortality is still high. Recent advances in the genomic profile of LUAD have identified a number of driver alterations in specific genes, enabling molecular classification and targeted therapy accordingly. However, only a fraction of LUAD patients with those driver mutations could benefit from targeted therapy, and the remaining large numbers of patients were unclassified. RNA editing events are those nucleotide changes in the RNA. Currently, the role of RNA editing events ...

Glass is one of the most common subjects we see every day, but the detailed structure of this non-metallic and non-liquid material has always been a major mystery in science. A research team co-led by scientists at City University of Hong Kong (CityU) has successfully discovered that the amorphous and crystalline metallic glass have the same structural building blocks. And it is the connectivity between these blocks that distinguishes the crystalline and amorphous states of the material. The findings shed light on the understanding of glass structure. Glass is a non-crystalline amorphous solid which has widespread practical and technological use in daily life. Besides the soda-lime glass used in windows, there are many other ...

Epidemiological and toxicological studies indicate that the adverse outcomes of PM2.5 exposure associated closely with the chemical composition in PM2.5. Metals in PM2.5 are highly concerned for their induced disruption of iron homeostasis in the lung and following oxidative stress, which is one of the key mechanisms underlying the cardiovascular autonomic dysfunction of PM2.5 exposure. However, there is no clear evidence on whether COPD patients are more susceptible to cardiovascular autonomic dysfunction associated with exposure to metals in ambient PM2.5 than individuals without COPD. Based on a panel study, the researchers directly compared metal-associated cardiovascular autonomic dysfunction between COPD patients and healthy controls. "We observed higher levels of heart ...

Supermassive black holes (SMBH) occupy the center of galaxies, with masses ranging from one million to 10 billion solar masses. Some SMBHs are in a bright phase called active galactic nuclei (AGN). AGNs will eventually burn out since there is a maximum mass limit for SMBHs; scientists have long since pondered when that will be. Tohoku University's Kohei Ichikawa and his research group may have discovered an AGN towards the end of its life span by accident after catching an AGN signal from the Arp 187 galaxy. Through observing the radio images in the galaxy using two astronomy observatories - the Atacama Large Millimeter/submillimeter Array (ALMA) and the Very Large Array (VLA) - ...