A study led by Fernando Colchero, University of Southern Denmark and Susan Alberts, Duke University, North Carolina, that included researchers from 42 institutions across 14 countries, provides new insights into the aging theory "the invariant rate of ageing hypothesis", which states that every species has a relatively fixed rate of aging. - Human death is inevitable. No matter how many vitamins we take, how healthy our environment is or how much we exercise, we will eventually age and die, said Fernando Colchero. He is an expert in applying statistics and mathematics to population biology and an associate professor at Department of Mathematics and Computer Science, University of Southern Denmark. "We were able to shed light on the invariant rate of ageing hypothesis by combining ...

Teachers play a key role in supporting children's development in early childhood education classrooms such as Head Start. Research shows significant associations between teachers' depressive symptoms and their students' social and emotional development. However, little research has focused on the associations between teachers' depressive symptoms and academic outcomes of preschoolers from low-income families. Specifically, one important pathway that has not been examined is whether teacher depressive symptoms have implications for the quality of family-teacher relationships. This in turn could affect how supportive parents ...

An herbicide widely used in agriculture, forestry and other applications can cause deleterious effects on the reproductive health of a common perennial plant found in forests in British Columbia, Canada. Researchers reported in the journal END ...

Despite rapid development of electric vehicles (EVs), the safety of the lithium-ion (Li-ion) batteries remains a concern as they are as a fire and explosion risk. Among the various approaches to tackle this issue, Korean researchers have used semiconductor technology to improve the safety of Li-ion batteries. A research team from the Korea Institute of Science and Technology (KIST) led by Dr. Joong Kee Lee of the Center for Energy Storage Research has succeeded in inhibiting the growth of dendrites, crystals with multiple branches that cause EV battery fires by forming protective semiconducting passivation layers on the surface of Li electrodes. When ...

Chestnut Hill, Mass. (6/16/2021) - In unconventional superconductors, electrons often exhibit a tendency towards spatial ordering within their atomic structure. In high-temperature superconductors, this comes in the form of the electronic structure exhibiting a pronounced difference in the lattice-bound directions along which atoms are ordered. Within these materials, this electronic activity in turn breaks the rotational symmetry of the crystal, a phase known as electronic nematicity. Researchers have sought to better understand this novel electronic state, which co-exists with superconductivity. Boston College Associate Professor of Physics Ilija Zeljkovic and an international team of researchers set out to better understand the atomic-scale signature ...

The omega-3 polyunsaturated fatty acids (PUFAs) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are found in oily fish. Researchers from the National Institute of Health Research (NIHR) Maudsley Biomedical Research Centre assessed the effects of high doses of EPA and DHA in lab-grown neurones and then in patients to help clarify how they reduce inflammation and depression. This novel approach allowed the scientists to identify an important molecular mechanism which can help inform the development of potential new treatments involving omega-3 fatty acids for patients with depression. Lead author Dr Alessandra Borsini, NIHR Maudsley BRC Senior Postdoctoral ...

Killer whales have complex social structures including close "friendships", according to a new study that used drones to film the animals. The findings show that killer whales spend more time interacting with certain individuals in their pod, and tend to favour those of the same sex and similar age. The study, led by the University of Exeter and the Center for Whale Research (CWR), also found that the whales become less socially connected as they get older. "Until now, research on killer whale social networks has relied on seeing the whales when they surface, and recording which whales are together," said lead author Dr Michael Weiss, of the University of Exeter. "However, because resident killer whales stay in the social groups into which they're born, how closely related whales ...

The period preceding the emergence of behaviourally modern humans was characterised by dramatic climatic and environmental variability - it is these pressures, occurring over hundreds of thousands of years that shaped human evolution. New research published today in the Cambridge Archaeological Journal proposes a new theory of human cognitive evolution entitled 'Complementary Cognition' which suggests that in adapting to dramatic environmental and climactic variabilities our ancestors evolved to specialise in different, but complementary, ways of thinking. ...

CHARLESTON, S.C. (June 15, 2021) - It's not every day that someone discovers a new-to-science bird migration spectacle. It's even more unexpected that such an encounter - in this case, tens of thousands of shorebirds gathering during their annual journey north - would be just a stone's throw from a metropolitan area. But two years ago, that's exactly what happened in coastal South Carolina. In May 2019, South Carolina Department of Natural Resources (SCDNR) biologist Felicia Sanders and a team of researchers confirmed that approximately 20,000 whimbrel were roosting at night on a small island during their spring migration. The team documented similar numbers again in 2020. This single ...

Reston, VA (Embargoed until 6:15 p.m. EDT, Tuesday, June 15, 2021)--A new positron emission tomography (PET) radiotracer can detect abdominal aortic aneurysms (AAAs) and potentially predict when they will rupture, according to research presented at the Society of Nuclear Medicine and Molecular Imaging 2021 Annual Meeting. Targeting a novel biomarker associated with AAA, the radiotracer is effective both in diagnosis and in providing information to assist in the development of AAA treatments, of which there currently are none. AAA is a life-threatening degenerative vascular disease. It occurs when blood vessels weaken and ...

Persisting symptoms thought to be complex interplay between effects of new injury and underlying conditions Strict rest after a sports related concussion slows recovery and may prolong symptoms, says a consensus statement drawn up by a US expert panel on how best to treat and manage the condition, and published in the British Journal of Sports Medicine. Most of these concussions get better within a month and can be effectively treated, it says. Persisting symptoms are thought to be a complex interplay between the physical and psychological effects of the new injury and underlying conditions. The consensus statement was developed by the Team Physician Consensus Conference (TPCC), an annual project-based alliance of six major professional associations,* with the aim ...

A junk food diet may increase the risk of dangerous driving among truck/lorry drivers by boosting fatigue, which is often a key factor in vehicle collisions, suggests research published online in the journal Occupational & Environmental Medicine. Some 1.35 million people die in road traffic collisions every year, with professional drivers at greater risk because of the time they spend behind the wheel. There are several known contributory factors, among which gender, age, experience, driving skills and attitudes seem to be important, note the researchers. But lifestyle ...

In a new study, North Carolina State University researchers demonstrated they could print layers of electrically conductive ink on polyester fabric to make an e-textile that could be used in the design of future wearable devices. Since the printing method can be completed at room temperature and in normal atmospheric conditions, researchers believe inkjet printing could offer a simpler and more effective method of manufacturing electronic textiles, also known as e-textiles. In addition, researchers said the findings suggest they could extend techniques common in the flexible electronic industry to textile manufacturing. They reported their findings in the journal ACS Applied ...

New research from Syracuse University Newhouse School of Public Communications reveals a relationship between political biases and attitudes about sexual assault. Authored by assistant professor Rebecca Ortiz and PhD student Andrea Smith, the article "A social identity threat perspective on why partisans may engage in greater victim blaming and sexual assault myth acceptance in the #MeToo era," was published in the peer-reviewed journal Violence Against Women. Ortiz and Smith found that the stronger the partisan identity of Republicans and Democrats, the more likely they were to engage in victim blaming attitudes, which was then related to a lesser likelihood to perceive the #MeToo ...

Reston, VA (Embargoed until 3:00 p.m. EDT, Tuesday, June 15, 2021)--A phase III clinical trial has validated the effectiveness of the prostate-specific membrane antigen (PSMA)-targeted radiotracer 18F-DCFPyL in detecting and localizing recurrent prostate cancer. Approved by the U.S. Food and Drug Administration last month, the radiotracer identified metastatic lesions with high positive predictive values regardless of anatomic region, adding to the evidence that PSMA-targeted radiotracers are the most sensitive and accurate agents for imaging prostate cancer. This study was presented at the ...

The demand for detecting infrared (IR) light, invisible to human eyes, is constantly growing, due to a wide variety of applications ranging from food quality control and remote sensing to night vision devices and lidar. Commercial IR cameras require the conversion of infrared light to electrons and the projection of the resultant image on a display. This display blocks the transmission of visible light, thereby disrupting normal vision. Moreover, such IR detectors require low temperature and even cryogenic cooling due to the low energies of the IR photons, making IR detectors bulky and heavy. An all-optical alternative to traditional cameras is the use of a nonlinear optical process to convert IR light into visible. In this case, electrical signals are no ...

A new article analyzes Chile's transition in 1990 from dictatorship to democracy, the nature of democracy between 1990 and 2019, and the appearance of several social movements geared to expanding this democracy. The article, by researchers at Carnegie Mellon University (CMU), appears in The Latin Americanist, a publication of the Southeastern Council of Latin American Studies. "Our goal is to locate the October 2019 protest movement in the context of Chile's very slow and incomplete transition to democracy, as well as amid social movements that have consistently challenged the economic ...

Dr. Igor Ivanishin, a postdoctoral researcher in the Harold Vance Department of Petroleum Engineering at Texas A&M University, has firsthand experience with the frustrations of oil production. He spent nine years as a hydraulic fracturing engineer with operating and service companies in Russia. A few years ago, he came to Texas A&M to get his doctoral degree while delving into a reoccurring recovery problem in carbonate reservoirs: why don't they produce oil as predicted? Ivanishin is investigating variations in the chemical composition of dolomite and calcite ...

CHAPEL HILL, NC - A group of scientists led by researchers at the University of North Carolina at Chapel Hill, Weill Cornell Medicine and NewYork-Presbyterian reported that the Moderna mRNA vaccine and a protein-based vaccine candidate elicited durable neutralizing antibody responses to SARS-CoV-2 in pre-clinical research. There were no adverse effects. The research, published June 15 in Science Immunology, suggests that vaccines for young children are likely important, safe tools to curtail the pandemic. The co-senior authors of the paper are Kristina De Paris, PhD, professor of microbiology and immunology at the UNC School ...

Instead of looking at the reasons child welfare caseworkers leave their jobs, Oregon State University researchers examined the common factors among workers who stay in the field, and what makes them feel most satisfied in their work. In their recent study, researchers found that quality supervisory support and strong relationships with coworkers helped caseworkers feel appreciated and understood, while having adequate technology and equipment helped them manage their workload effectively They hope child welfare agencies can use this information to support ...

BIRMINGHAM, Ala. - Clinical evaluation of three COVID-19 vaccine candidates in 2020-21 during a worldwide pandemic that killed or sickened millions was unprecedented in terms of urgency and scope. Responsibility for the safety, integrity and scientific validity of the trials in the United States fell to 12 experts of the federally appointed COVID-19 Vaccine Data and Safety Monitoring Board, or COVID-19 DSMB, who in turn report to an oversight group. This COVID-19 DSMB team -- which included co-contributing author Richard Whitley, M.D., distinguished professor of pediatrics in the University of Alabama ...

For the first time, researchers have used precariously-balanced rocks to set the formal design earthquake motions for a major existing engineered structure--the Clyde Dam, the largest concrete dam in New Zealand. Mark Stirling of the University of Otago and colleagues identified and assessed the ages of these gravity-defying rock formations located about 2 kilometers from the dam site, using these data to determine the peak ground accelerations that the rocks could withstand before toppling. This in turn was used to set the Safety Evaluation Earthquake (SEE) spectrum for the dam, or ...

An underwater archaeologist from The University of Texas at Arlington is part of a research team studying 9,000-year-old stone tool artifacts discovered in Lake Huron that originated from an obsidian quarry more than 2,000 miles away in central Oregon. The obsidian flakes from the underwater archaeological site represent the oldest and farthest east confirmed specimens of western obsidian ever found in the continental United States. "In this case, these tiny obsidian artifacts reveal social connections across North America 9,000 years ago," said Ashley Lemke, assistant professor of sociology and anthropology at UT Arlington. "The artifacts found below the Great Lakes come from a geological source in Oregon, 4,000 kilometers away---making it one of the longest distances ...

"So, no one told you life was going to be this way. Your job's a joke, you're broke, you're love life's DOA. It's like you're always stuck in second gear, When it hasn't been your day, your week, your month, or even your year..." If you have watched TV since the 1990s, the sitcom theme song, "I'll Be There for You," has likely been stuck in your head at one point or another. New research from UC Davis suggests these experiences are more than a passing nuisance -- they play an important role in helping memories form, not only for the song, but also related life events like hanging out with friends ...

When a fictional female journalist appears on screen, chances are she's about to sleep with one of her sources. It's a trope that infuriates actual women in news media -- and it can have real-life consequences, says University of Florida researcher Frank Waddell, Ph.D. In shows like "House of Cards" and movies like "Thank You for Smoking," female reporters are quick to trade sex for information. Even when sex with sources has nothing to do with ambition -- such as the hookups in "Sharp Objects," "Top Five," "Trainwreck," and the "Gilmore Girls" reboot, to name a few -- it still portrays unethical behavior. "In the past 20 to 30 years, Hollywood has really latched on to this. ...