"Sound vibrations are transmitted to the inner ear via anterior extensions of the swim bladder or via bony ossicles", the biologist Tanja Schulz-Mirbach explains how swim bladders may serve for hearing. The hearing sensitivity improves considerably in this way. The anterior part of the swim bladder functions in specialized fish species similar to an ear drum. Up to now the effects of the different swim bladder morphologies have not been investigated in detail in cichlid fishes. The behavioural biologists of the University of Vienna Tanja Schulz-Mirbach and Friedrich Ladich ...

Astronomers have constructed the largest-ever three-dimensional map of massive galaxies and distant black holes, which will help the investigation of the mysterious "dark matter" and "dark energy" that make up 96 percent of the universe. The map was produced by the Sloan Digital Sky Survey III (SDSS-III). Early last year, the SDSS-III released the largest-ever image of the sky, which covered one-third of the night sky. The new data, "Data Release 9" (DR9), which publically releases the data from the first two years of this six-year project, begins expansion of this ...

They're everywhere -- in magazines, on the Internet, on television—people with super-thin bodies who are presented as having the ideal body form. But despite the increasing pressure to be thin, more and more of us are overweight. Now, researchers from the Norwegian University of Science and Technology (NTNU) have found that normal weight teens who perceive themselves as fat are more likely to grow up to be fat. "Perceiving themselves as fat even though they are not may actually cause normal weight children to become obese as adults," says Koenraad Cuypers, a researcher ...

Research at Bangor University has identified a switch in cells that may help to kill tumors with heat. Prostate cancer and other localized tumors can be effectively treated by a combination of heat and an anti-cancer drug that damages the genes. Behind this novel therapy is the enigmatic ability of heat to switch off essential survival mechanisms in human cells. Although thermotherapy is now more widely used, the underlying principles are still unclear. In a recent publication in the Journal of Cell Science (http://jcs.biologists.org/content/early/2012/07/10/jcs.104075.abstract) ...

Active video games, also known as "exergames," are not the perfect solution to the nation's sedentary ways, but they can play a role in getting some people to be more active. Michigan State University's Wei Peng reviewed published research of studies of these games and says that most of the AVGs provide only "light-to-moderate" intensity physical activity. And that, she says, is not nearly as good as what she calls "real-life exercise." "For those not engaging in real-life exercise, this may be a good step toward this," said Peng, an assistant professor of telecommunication, ...

Stressed and non-stressed persons use different brain regions and different strategies when learning. This has been reported by the cognitive psychologists PD Dr. Lars Schwabe and Professor Oliver Wolf from the Ruhr-Universität Bochum in the Journal of Neuroscience. Non-stressed individuals applied a deliberate learning strategy, while stressed subjects relied more on their gut feeling. "These results demonstrate for the first time that stress has an influence on which of the different memory systems the brain turns on," said Lars Schwabe. The experiment: Stress due to ...

VIDEO: With the aid of tiny silicon tubes and one of Europe's most sophisticated centres for microscopy, scientists from University of Copenhagen have been able for the first time to observe... Click here for more information. Chronic infections are a large and growing problem throughout the developed world, and intensive research is being conducted in ways to combat the recalcitrant bacteria. When bacteria aggregate into so-called biofilm, they become resistant to antibiotics. ...

Contrary to popular belief, purified drinking water from home faucets contains millions to hundreds of millions of widely differing bacteria per gallon, and scientists have discovered a plausible way to manipulate those populations of mostly beneficial microbes to potentially benefit consumers. Their study appears in ACS' journal Environmental Science & Technology. Lutgarde Raskin and colleagues Ameet Pinto and Chuanwu Xi explain that municipal water treatment plants typically try to minimize the growth of microbes in the huge filters that remove small particles and substances ...

With the best explosive detectors often unable to sniff out the tiny amounts of TNT released from terrorist bombs in airports and other public places, scientists are reporting a potential solution. Their research in ACS' journal Analytical Chemistry describes development of a device that concentrates TNT vapors in the air so that they become more detectable. Yushan Yan and colleagues point out that TNT and other conventional explosives are the mainstays of terrorist bombs and the anti-personnel mines that kill or injure more than 15,000 people annually in war-torn countries. ...

Green lacewings are delicate green insects with large, lace-like wings that live in a wide variety of habitats, especially tropical forests. Adults mostly feed on flowers, but the larvae are ferocious predators of other insects, frequently carrying the dead carcasses of their prey on their backs after killing them using their enormous, sucking tube-like jaws. In this study, a beautiful new species of green lacewing in the genus Semachrysa is described from the Malaysian rainforest. The wing pattern is its most distinctive feature. Yet, this discovery could have been ...

INDIANAPOLIS -- A new study from the Regenstrief Institute and Indiana University School of Medicine examines the relationship between family members who make decisions for hospitalized older adults with impaired cognition and the doctors, nurses and other clinicians who care for these patients. The researchers report that in this era of fragmented care, families rarely get to know even the names of the many clinicians who care for their family members. Even a physician or nurse who was especially supportive or helpful to the family might see the family member only once ...

ANN ARBOR, Mich. — It's no secret that pregnancy hormones can dampen moods, but for some expectant moms, it's much worse: 1 in 5 experience major depression. Now, new research shows that an age-old recommended stress-buster may actually work for this group of women: yoga. Pregnant women who were identified as psychiatrically high risk and who participated in a 10-week mindfulness yoga intervention saw significant reductions in depressive symptoms, according to a University of Michigan Health System pilot feasibility study. Mothers-to-be also reported stronger attachment ...

CAMBRIDGE, MA. -- A protein that slows aging in mice and other animals also protects against the ravages of a high-fat diet, including diabetes, according to a new MIT study. MIT biology professor Leonard Guarente discovered SIRT1's longevity-boosting properties more than a decade ago and has since explored its role in many different body tissues. In his latest study, appearing in the Aug. 8 print edition of the journal Cell Metabolism, he looked at what happens when the SIRT1 protein is missing from adipose cells, which make up body fat. When put on a high-fat diet, ...

MANHATTAN, Kan. -- For much of the year drought has been plaguing American grasslands. But a recent study found that grasses do not appear to be losing the turf war against climate when it comes to surviving with little precipitation. The Kansas State University-led study looked at the drought tolerance of 426 species of grass from around the world. The goal was to better understand how grasslands in different parts of the world may respond to the changes in frequency and severity of drought in the future. Grasslands have several important ecological functions, according ...

Reintroduced European beavers could have an overall positive impact on wild salmon populations in Scotland, according to a study by the University of Southampton. Representatives of recreational fisheries interests north and south of the border are concerned that beavers can harm economically important fish stocks due to their dam building activities and potential to block migratory life phases. However, results of a study conducted by scientists at the University of Southampton, funded by Scottish Natural Heritage, indicate that beavers can also have substantial beneficial ...

Post-Traumatic Stress Disorder (PTSD) develops in individuals who experience highly traumatizing situations such as terrorist attacks and car accidents, but symptoms can also come about after normal life events — including childbirth. A Tel Aviv University researcher has found that approximately one third of all post-partum women exhibit some symptoms of PTSD, and a smaller percentage develop full-blown PTSD following the ordeal of labor. This surprising finding indicates a relatively high prevalence of the disorder, says Prof. Rael Strous of TAU's Sackler Faculty of ...

New Rochelle, NY, August 8, 2012—For more than 1 million people in the U.S. living with spinal cord injury, the frightening days and weeks following the injury are filled with uncertainty about their potential for recovery and future independence. A new model based on motor scores at admission and early imaging studies may allow clinicians to predict functional outcomes and guide decision-making for therapy and care-giving needs, as described in an article published in Journal of Neurotrauma, a peer-reviewed journal from Mary Ann Liebert, Inc., publishers. The article is ...

A new study is the first to find a difference between how boys and girls respond to prenatal exposure to the insecticide chlorpyrifos. Researchers at the Columbia Center for Children's Environmental Health (CCCEH) at the Mailman School of Public Health found that, at age 7, boys had greater difficulty with working memory, a key component of IQ, than girls with similar exposures. On the plus side, having nurturing parents improved working memory, especially in boys, although it did not lessen the negative cognitive effects of exposure to the chemical. Results are published ...

As US President Barack Obama turns 51 this month, new research suggests imagery of one of his most iconic predecessors, JFK, helped Obama on his way to the White House. Similarities between the imagery of President Kennedy and President Obama have been highlighted in a new University of Warwick paper, due to be published in the August issue of Comparative American Studies Journal. Researcher Greg Frame, from the University of Warwick's Film and Television department , has explored how Obama, whose birthday is Saturday August 4, has shaped himself in Kennedy's image. He ...

(Washington) – The American College of Physicians (ACP) today released a paper, Statement of Principles on the Role of Governments in Regulating the Patient-Physician Relationship, which recommends principles for the role of federal and state governments in health care and the patient-physician relationship. "The physician's first and primary duty is to put the patient first," David L. Bronson, MD, FACP, president of ACP, said. "To accomplish this duty, physicians and the medical profession have been granted by government a privileged position in society." Dr. Bronson ...

In an advance that could be used in masks to protect against nerve gas, scientists are reporting development of proteins that are up to 15,000 times more effective than their natural counterpart in destroying chemical warfare agents. Their report appears in ACS' journal Biochemistry. Frank Raushel, David Barondeau and colleagues explain that a soil bacterium makes a protein called phosphotriesterase (PTE), which is an enzyme that detoxifies some pesticides and chemical warfare agents like sarin and tabun. PTE thus has potential uses in protecting soldiers and others. ...

A new study published in the August 2012 issue of Military Medicine, the journal of the Association of Military Surgeons of the U.S., reveals that 22 of 28 NATO nations do not use animal laboratories for military medical training. Researchers from PETA, in collaboration with current and former military medical personnel, surveyed officials in all 28 NATO nations during 2010 and 2011. Twenty-two NATO countries—including Albania, Belgium, Bulgaria, Croatia, the Czech Republic, Estonia, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Lithuania, Luxembourg, the ...

Research has shown that older adults display more positive emotions and are quicker to regulate out of negative emotional states than younger adults. Given the declines in cognitive functioning and physical health that tend to come with age, we might expect that age would be associated with worse moods, not better ones. So what explains older adults' positive mood regulation? In a new article in the August issue of Current Directions in Psychological Science, a journal of the Association for Psychological Science, researcher Derek Isaacowitz of Northeastern University ...

Los Angeles, CA (August 8, 2012) — While it is commonly believed that men who pay for sex are attempting to avoid emotional commitment, a new study finds that men who become regular clients of sex workers often develop feelings of romance and love. This study is published in a recent edition of Men and Masculinities, a SAGE journal. "In recent years, we have come to see a gradual normalization of independent escort prostitution, where sexual encounters have come to resemble quasi-dating relationships," stated study author Christine Milrod. "Our study shows that regular ...

The content of alcohol ads placed in magazines is more likely to be in violation of industry guidelines if the ad appears in a magazine with sizable youth readership, according to a new study from the Center on Alcohol Marketing and Youth (CAMY) at the Johns Hopkins Bloomberg School of Public Health. Published in the Journal of Adolescent Health, the study is the first to measure the relationship of problematic content to youth exposure, and the first to examine risky behaviors depicted in alcohol advertising in the past decade. The researchers examined 1,261 ads for ...