Archive | September, 2009

Researchers use computational models to study fear

COLUMBIA, Mo. — The brain is a complex system made of billions of neurons and thousands of connections that relate to every human feeling, including one of the strongest emotions, fear. Most neurological fear studies have been rooted in fear-conditioning experiments.

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Joint US-Norwegian study provides new insights into marine ecosystems and fisheries production

NOAA and Norwegian researchers recently completed a comparative analysis of marine ecosystems in the North Atlantic and North Pacific to see what factors support fisheries production, leading to new insights that could improve fishery management plans and the ecosystems.

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Cloudy with a chance of pebble showers

So accustomed are we to the sunshine, rain, fog and snow of our home planet that we find it next to impossible to imagine a different atmosphere and other forms of precipitation.

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Bye bye modular, hello cognit!

Bye bye modular, hello cognit!

Termed by Fuster in 2006, the construct was created to solve the problematic yet popular view that the human brain is made up of discrete cortical domains dedicated exclusively to visual discrimination, language, spatial attention, face recognition, motor programming, memory retrieval, and working memory.

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Putting the squeeze on sperm DNA

In the quest for speed, olympic swimmers shave themselves or squeeze into high-tech super-suits. In the body, sperm are the only cells that swim and, as speed is crucial to fertility, have developed their own ways to become exceptionally streamlined.

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San Andreas affected by 2004 Sumatran quake

HOUSTON — (Sept. 30, 2009) — U.S. seismologists have found evidence that the massive 2004 earthquake that triggered killer tsunamis throughout the Indian Ocean weakened at least a portion of California’s famed San Andreas Fault.

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Teen attitudes toward smoking linked to likelihood of drinking and using drugs

NEW YORK (Sept. 30, 2009) — New research by Weill Cornell Medical College researchers looks at the specific ways parents and peers influence teenagers to smoke, drink and use marijuana in combination. Among their findings: attitudes toward smoking influenced teenagers’ use of multiple drugs (smoking, drinking and marijuana), and that this manifested itself differently in boys and girls.

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Securing biological select agents and toxins will require developing a culture of trust

WASHINGTON — The most effective way to prevent the deliberate misuse of biological select agents and toxins (BSATs) — agents housed in laboratories across the U.S. considered to potentially pose a threat to human health — is to instill a culture of trust and responsibility in the laboratory, says a new report from the National Research Council.

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First human gets new antibody aimed at rabies virus

Boston, Mass. — MassBiologics of the University of Massachusetts Medical School today announced the beginning of a Phase 1 clinical trial, testing the safety and activity of a human monoclonal antibody (MAB) developed to neutralize the rabies virus.

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Denial of service denial

A way to filter out denial of service attacks on computer networks, including cloud computing systems, could significantly improve security on government, commercial, and educational systems. Such a filter is reported in the Int. J. Information and Computer Security by researchers from Auburn University in Alabama.

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Peer pressure builds more latrines than financial assistance

DURHAM, N.C. — Government subsidies persuade some people to change habits, but social shame works even better, suggests a recent study of efforts to reduce elevated childhood death and disease rates blamed on the microbial pathogens that cause diarrhea in rural India.

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Racing against the clock to distribute H1N1 flu vaccine

Drug companies are sprinting ahead in a race against the clock to deliver millions of doses of vaccine for the H1N1 influenza virus before cooler weather ushers in the 2009-2010 flu season. A two-part cover story in the current issue of Chemical & Engineering News, ACS’ weekly newsmagazine, focuses on that topic and efforts to develop antiviral drugs for flu infections.

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Where surgery was the standard, casting may be the future

When parents are told their babies’ scoliosis needs treatment, they often try bracing first. If that fails, they need surgery to place metal rods in their backs with spinal fusion later on. These children face the risk of complications from the surgery and their backs and chests may be stiff for life.

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Penn study asks, protection or peril? Gun possession of questionable value in an assault

PHILADELPHIA — In a first-of its-kind study, epidemiologists at the University of Pennsylvania School of Medicine found that, on average, guns did not protect those who possessed them from being shot in an assault. The study estimated that people with a gun were 4.5 times more likely to be shot in an assault than those not possessing a gun.

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Places to play, but ‘stranger danger’ fears keep inner-city kids home: Study

Fear of dangerous strangers in inner-city neighbourhoods is keeping kids and teens from using playgrounds and parks to be physically active.

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Less than half of medical students understand health care system

Ann Arbor, Mich. — Less than half of graduating medical students in the U.S. say they received adequate training in understanding health care systems and the economics of practicing medicine, according to a study conducted by the University of Michigan Medical School.

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Step forward for nanotechnology: Controlled movement of molecules

Scientists in the United Kingdom are reporting an advance toward overcoming one of the key challenges in nanotechnology: Getting molecules to move quickly in a desired direction without help from outside forces. Their achievement has broad implications, the scientists say, raising the possibility of coaxing cells to move and grow in specific directions to treat diseases.

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Calcium scans may be effective screening tool for heart disease

LOS ANGELES (September 29, 2009) — A simple, non-invasive test appears to be an effective screening tool for identifying patients with silent heart disease who are at risk for a heart attack or sudden death.

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