In a study of 951 lesbian, gay, and bisexual youth, those experiencing both cyber and school bullying were most likely to engage in aggressive and suicidal behaviors. However, bullied youth who felt connected to an adult at school were not more likely to report such behaviors. "In recent years, clubs such as Gay-Straight Alliances have played an integral role in creating safer environments in schools. These efforts are often student-led with the guidance of only a handful of adult advisors; however, our study highlights just how important adults are in buffering sexual ...

In a study of 574 low-income adults, many felt stigmatized when receiving medical care. This stigma was most often the result of interactions with clinicians that felt demeaning, rather than an internalized sense of shame related to receiving public insurance or charity care. Experiencing stigma was associated with unmet health needs, poorer perceptions of quality of care, and worse self-reported health. "Feeling judged by providers was associated with higher reports of unmet physical and mental health needs and declining health, even though people who reported stigma ...

When the supersonic solar wind hits the Earth's magnetic field, a powerful electrical connection occurs with Earth's field, generating millions of amperes of current that drive the dazzling auroras. These so-called Birkeland currents connect the ionosphere to the magnetosphere and channel solar wind energy to Earth's uppermost atmosphere. Solar storms release torrential blasts of solar wind that cause much stronger currents and can overload power grids and disrupt communications and navigation. Now for the first time, scientists are making continuous, global measurements ...

Trying on clothes when a shop is closed could become a reality thanks to new research that uses semi-transparent mirrors in interactive systems and which will be unveiled at an international conference tomorrow [Tuesday 7 October]. The research paper, to be presented at one of the world's most important conferences on human-computer interfaces - ACM UIST 2014 [5-8 October], could change the way people interact and collaborate in public spaces, such as museums and shop windows. The research, led by Professor Sriram Subramanian, Dr Diego Martinez Plasencia and Florent ...

Gender diversity in the workplace helps firms be more productive, according to a new study co-authored by an MIT researcher — but it may also reduce satisfaction among employees. "Having a more diverse set of employees means you have a more diverse set of skills," says Sara Ellison, an MIT economist, which "could result in an office that functions better." At the same time, individual employees may prefer less diverse settings. The study, analyzing a large white-collar U.S. firm, examined how much "social capital" offices build up in the form of things like cooperation, ...

The next generation of aircraft could be thinner and lighter thanks to the development of a new imaging technique that could detect damage previously invisible to acoustic imaging systems. The nonlinear acoustic technique developed by researchers from the University of Bristol's Ultrasonics and Non-destructive Testing (NDT) research group is published in the current issue of Physical Review Letters together with an accompanying article in Physics. It has long been understood that acoustic nonlinearity is sensitive to many physical properties including material microstructure ...

For millennia, bacteria and other microbes have engaged in intense battles of chemical warfare, attempting to edge each other out of comfortable ecological niches. Doctors fight pathogens with an arsenal of weapons—antibiotics—co-opted from these microbial wars, but their efforts are frustrated by the development of drug resistance that outpaces drug discovery. Researchers at the University of Illinois at Urbana-Champaign and Northwestern University have now innovated and demonstrated the value of an algorithm to analyze microbial genomic data and speed discovery of new ...

This news release is available in Spanish. Fuel cells are totally appropriate systems for substituting the batteries of mobile phones, laptop computers and vehicles. They turn the energy resulting from the combining of hydrogen and oxygen into electrical power, with water vapour being the only waste product. In other words, they generate energy in the same way that batteries do, but they do not contaminate. However, if these fuel cells are to produce energy, they need an external supply of hydrogen, and right now storing hydrogen safely poses difficulties. That ...

BUFFALO, N.Y. – It is not only prenatal drug exposure, but also conditions related to drug use that can influence negative behavior in children, according to a new study from the University at Buffalo's Research Institute on Addictions. In examining the long-term effects of cocaine use during pregnancy in a sample of low-income, cocaine-exposed and non-exposed families, researchers found that a mother's harshness toward her child during mother-child interactions at 2 years of age is one of the strongest predictors of problem behaviors in kindergarten, such as fighting, ...

A new paper from the Wildlife Conservation Society, Montana State University, Montana Department of Fish, Wildlife and Parks, and the U.S. Geological Survey looks at the feasibility of electrofishing to selectively remove invasive trout species from Montana streams as an alternative to using fish toxicants known as piscicides that effect all gill-breathing organisms. Westslope Cutthroat Trout (WCT) have experienced severe declines throughout much of their historical range. One major reason for this decline is the current competitive advantages enjoyed by non-native Brook ...

Reducing community transmission and changing behaviour in communities is key to containing Ebola outbreaks, according to new research into the first known outbreak of the virus in 1976 by researchers at the London School of Hygiene & Tropical Medicine and Fogarty International Center at the National Institutes of Health. The study authors include Professor Peter Piot and Dr Joel Breman, who travelled to Zaire (now the Democratic Republic of Congo), to investigate the first outbreak in 1976. The study, published in Epidemics, also found that if the people in the affected ...

By studying identical twins, researchers from Lund University in Sweden have identified mechanisms that could be behind the development of type 2 diabetes. This may explain cases where one identical twin develops type 2 diabetes while the other remains healthy. The study involved 14 pairs of identical twins in Sweden and Denmark. One twin had type 2 diabetes and the other was healthy. "Twins are a good model for finding mechanisms, but the results are applicable to all", said Emma Nilsson, who carried out the study with Charlotte Ling. We know that fat tissue can ...

Worldwide there have been 71 documented cases of patients with anaplastic large cell lymphoma (ALCL) in which researchers suspected breast implants to be the cause. ALCL is normally found in the lymph nodes, as well as in skin, lung, liver and soft tissue, but not usually in the breast. Cases in which ALCL developed in the breast region almost exclusively involved patients who have had breast surgery. In these cases, ALCL developed around ten years after the operation. The tumours grew in the scar tissue around the implant. Breast implants are generally safe and studies ...

New theoretical physics models could help us better grasp the atmospheric chemistry of ozone depletion. Indeed, understanding photoabsorption of nitrous oxide (N2O) — a process which involves the transfer of the energy of a photon to the molecule — matters because a small fraction of N2O reacts with oxygen atoms in the stratosphere to produce among others nitric oxide (NO). The latter participates in the catalytic destruction of ozone (O3). Now, new theoretical work unveils the actual dynamic of the photoabsorption of nitrous oxide molecules. These findings by Mohammad ...

VIDEO: The cell stimulated with the growth factor PDGF (upper cell) migrates targeted in only one direction on its track, while the not stimulated cell (lower cell) changes its direction of... Click here for more information. During cancer metastasis, immune response or the development of organisms, cells are moving in a controlled manner through the body. Researchers from the Department of Biomedicine at the University of Basel discovered novel mechanisms of cell migration by ...

Viruses can convert their DNA from solid to fluid form, which explains how viruses manage to eject DNA into the cells of their victims. This has been shown in two new studies carried out by Lund University in Sweden. Both research studies are about the same discovery made for two different viruses, namely that viruses can convert their DNA to liquid form at the moment of infection. Thanks to this conversion, the virus can more easily transfer its DNA into the cells of its victim, which thus become infected. One of the studies investigated the herpes virus, which infects ...

This news release is available in German. How can a beam of light tell the difference between left and right? At the Vienna University of Technology (TU Wien) tiny particles have been coupled to a glass fibre. The particles emit light into the fibre in such a way that it does not travel in both directions, as one would expect. Instead, the light can be directed either to the left or to the right. This has become possible by employing a remarkable physical effect – the spin-orbit coupling of light. This new kind of optical switch has the potential to revolutionize ...

They emerge at night, while we sleep unaware, growing and spreading out as quickly as they can. And they are deadly. In a surprise finding that was recently published in Nature Communications, Weizmann Institute of Science researchers showed that nighttime is the right time for cancer to grow and spread in the body. Their findings suggest that administering certain treatments in time with the body's day-night cycle could boost their efficiency. This finding arose out of an investigation into the relationships between different receptors in the cell – a complex network ...

Over the years, researchers have described how some of the body's cells have giant channels – a kind of holes that completely uncritically allow both small and large molecules to penetrate into and out of the cell. The hypothesis is that these normally closed gatekeeper proteins in the cell membrane allow unrestricted access in the event of diseases such as myocardial infarction, stroke or Alzheimer's. If the hypothesis was correct, the obvious choice would be to look for novel drugs to block the relevant membrane proteins and in this way cure or prevent disease. New ...

A specialist group of European researchers are studying the remains of prehistoric human settlements which are now submerged beneath our coastal seas. Some of these drowned sites are tens of thousands of years old. From the progressive discovery and analysis of these prehistoric remains, a new scientific field has emerged, combining the expertise from many disciplines including archaeology, oceanography and the geosciences. The new field is called Continental Shelf Prehistoric Research. This rapidly evolving research field is the focus of a new European Marine Board ...

Since the first human fetal surgery was reported in 1965, several different fetal surgical procedures have been developed and perfected, resulting in significantly improved outcomes for many fetuses. However, the significant investments associated with this highly specialized service and quality metrics must be considered as more fetal treatment programs are developed. Katharine D. Wenstrom, MD, director of the Division of Maternal-Fetal Medicine at Women & Infants Hospital of Rhode Island, co-director of the hospital's Integrated Program for High-Risk Pregnancy, and ...

WASHINGTON, Oct. 6, 2014 — It's happened to many of us: Half asleep in the morning, you finish brushing your teeth and reach for your daily glass of orange juice. After taking a big swig, you spit it back out, making a face like you've just chewed on a lemon. Turns out, a specific chemical in your toothpaste is responsible for that nasty taste. This week, Reactions explains why toothpaste and orange juice don't mix. Learn all about it at https://www.youtube.com/watch?v=9X5_gtel-c0. Subscribe to the series at Reactions YouTube, and follow us on Twitter @ACSreactions to ...

Quantum computing will allow for the creation of powerful computers, but also much smarter and more creative robots than conventional ones. This was the conclusion arrived at by researchers from Spain and Austria, who have confirmed that quantum tools help robots learn and respond much faster to the stimuli around them. Quantum mechanics has revolutionised the world of communications and computers by introducing algorithms which are much quicker and more secure in transferring information. Now researchers from the Complutense University of Madrid (UCM) and the University ...

The way neurons are interconnected in the brain is very complicated. This holds especially true for the cells of the hippocampus. It is one of the oldest brain regions and its form resembles a see horse (hippocampus in Latin). The hippocampus enables us to navigate space securely and to form personal memories. So far, the anatomic knowledge of the networks inside the hippocampus and its connection to the rest of the brain has left scientists guessing which information arrived where and when. Signals spread through the brain Accordingly, Dr Martin Pyka and his colleagues ...

New research by scientists at the University of Bristol has challenged one of the key axioms in biology - that enzymes need water to function. The breakthrough could eventually lead to the development of new industrial catalysts for processing biodiesel. Enzymes are large biological molecules that catalyse thousands of different chemical reactions that are essential for all life, from converting food into energy, to controlling how our cells replicate DNA. Throughout this diverse range of biological environments in which enzymes perform their various roles, the only ...