Κυριακή 24 Μαρτίου 2013

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Genetic analysis saves major apple-producing region of Washington state

Posted: 23 Mar 2013 12:29 PM PDT

A genetic analysis has saved a major apple-producing region of Washington state.

Acoustic monitoring of Atlantic cod reveals clues to spawning behavior

Posted: 23 Mar 2013 12:29 PM PDT

For decades researchers have recorded sounds from whales and other marine mammals, using a variety of methods including passive acoustic monitoring to better understand how these animals use sound to interact with each other and with the environment. Now, for the first time, researchers report using this technology to record spawning cod in the wild.

Nerve mapping technology improves surgery for compressed nerves

Posted: 23 Mar 2013 12:24 PM PDT

Nerve mapping technology allows surgeons to determine whether surgery has been effective for relieving pressure from compressed nerves, which often function poorly and cause sciatica or pain and weakness in muscles supplied by the nerve.

Physical activity during youth may help reduce fracture risk in old age

Posted: 23 Mar 2013 12:24 PM PDT

Get out there and regularly kick that soccer ball around with your kids, you may be helping them prevent a broken hip when they are older, say researchers.

Alterations in brain activity in children at risk of schizophrenia predate onset of symptoms

Posted: 22 Mar 2013 02:43 PM PDT

Research has shown that children at risk of developing schizophrenia have brains that function differently than those not at risk.

Huge and widespread volcanic eruptions triggered the end-Triassic extinction

Posted: 22 Mar 2013 02:43 PM PDT

Some 200 million years ago, an increase in atmospheric CO2 caused acidification of the oceans and global warming that killed off 76 percent of marine and terrestrial species on Earth.

Computer simulations yield clues to how cells interact with surroundings

Posted: 22 Mar 2013 02:43 PM PDT

Scientists have developed a computer model of a protein that helps cells interact with their surroundings. Like its biological counterpart, the virtual integrin snippet is about twenty nanometers long. It also responds to changes in energy and other stimuli just as integrins do in real life. The result is a new way to explore how the protein connects a cell's inner and outer environments.

When a gene is worth two: Same gene fulfills different biological roles in plants

Posted: 22 Mar 2013 12:41 PM PDT

The notion that each gene can only codify for a single protein has been challenged for some years. Yet, the functional outcomes that may result from genes encoding more than one protein are still largely unknown. Now, botanists have discovered a gene -- ZIFL1 -- that produces two different proteins with completely distinct locations and functions in the plant.

Foods can help fight inflammation

Posted: 22 Mar 2013 12:40 PM PDT

Chronic inflammation can lead to chronic diseases, but it can be reduced naturally through the proper diet.

Protective properties of influenza vaccines revealed

Posted: 22 Mar 2013 12:40 PM PDT

Scientists have identified an important mechanism for stimulating protective immune responses following seasonal influenza vaccinations.

Making axons branch and grow to help nerve regeneration after injury

Posted: 22 Mar 2013 09:54 AM PDT

One molecule makes nerve cells grow longer. Another one makes them grow branches. These new experimental manipulations have taken researchers a step closer to understanding how nerve cells are repaired at their farthest reaches after injury.

Invasive species: Understanding the threat before it's too late

Posted: 22 Mar 2013 09:53 AM PDT

Catching rides on cargo ships and fishing boats, many invasive species are now covering our shorelines and compromising the existence of our native marine life. Scientists have examined what factors allow some invasive species to survive in their new environments and others to fail.

Modest changes in military dining facilities promoted healthier eating

Posted: 22 Mar 2013 09:53 AM PDT

The prevalence of obesity within the military is currently 13 percent. This rising epidemic, also rampant throughout the general population, could result in military career setbacks, negatively impact operational readiness, and jeopardize Department of Defense operations. To combat the epidemic, a team of researchers chose the military cafeteria as the venue to observe and evaluate eating behavior and the positive impact of modest changes to promote healthy eating and food selection.

Engineers explain physics of fluids some 100 years after original discovery

Posted: 22 Mar 2013 09:53 AM PDT

Intuition says two or more jets of fluid should coalesce into a single stream of fluid, but that is not always the case. Velocity matters.

Atherosclerosis: Specific microRNAs promote inflammation

Posted: 22 Mar 2013 09:53 AM PDT

Atherosclerosis, an inflammatory reaction, is at the root of the most common forms of cardiovascular disease. Researchers have now identified a microRNA that plays a prominent role in the process, and offers a promising target for new therapies.

Novel method accurately predicts disease outbreaks

Posted: 22 Mar 2013 09:52 AM PDT

Scientists have developed a novel method to accurately predict dengue fever outbreaks several weeks before they occur.

New chemo drug gentler on fertility, tougher on cancer

Posted: 22 Mar 2013 08:45 AM PDT

A new gentler chemotherapy drug in the form of nanoparticles has been designed by scientists to be less toxic to a young woman's fertility but extra tough on cancer. This is the first cancer drug tested while in development for its effect on fertility using a novel, quick in vitro test designed by the scientists.

Common antibiotic linked to heart problems in patients with lung conditions

Posted: 21 Mar 2013 05:56 PM PDT

The antibiotic clarithromycin -- widely used for treating lower respiratory tract infections like pneumonia and acute exacerbations (sudden worsening) of chronic obstructive pulmonary disease -- may be associated with an increased risk of heart problems, finds a new study.

Telehealth unlikely to be cost effective for patients with long term conditions, study finds

Posted: 21 Mar 2013 05:56 PM PDT

Telehealth does not seem to be a cost effective addition to standard support and treatment for patients with long term conditions, a new study finds

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