Monday, November 09, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Unsettled Youth: Spitzer Observes A Chaotic Planetary System

Posted: 09 Nov 2009 08:00 AM PST

Before our planets found their way to the stable orbits they circle in today, they wiggled and jostled about like unsettled children. Now, NASA's Spitzer Space Telescope has found a young star with evidence for the same kind of orbital hyperactivity. Young planets circling the star are thought to be disturbing smaller comet-like bodies, causing them to collide and kick up a huge halo of dust.

Gene Therapy Stalls Development Of Huntington's Disease In Mice

Posted: 09 Nov 2009 08:00 AM PST

Researchers at the California Institute of Technology have shown that a highly specific intrabody (an antibody fragment that works against a target inside a cell) is capable of stalling the development of Huntington's disease in a variety of mouse models. "Gene therapy in these models successfully attenuated the symptoms of Huntington's disease and increased life span," notes Paul Patterson, the Anne P. and Benjamin F. Biaggini Professor of Biological Sciences.

New Mechanism Increases Atherosclerosis In Mice

Posted: 09 Nov 2009 08:00 AM PST

A shot of espresso may rev you up in the morning, but the downside is that it may also ramp up levels of bad cholesterol due to its effects on a unique liver protein called PXR. New research now shows that when chronically activated, the protein rejiggers how cholesterol is broken down in and cleared from the liver, a disturbance that can lead to high levels of the waxy substance or worse, full-blown atherosclerosis.

Time Between Treatment And PSA Recurrence Predicts Death From Prostate Cancer

Posted: 09 Nov 2009 08:00 AM PST

Men whose prostate specific antigen rise within 18 months of radiotherapy are more likely to develop spread and die of their disease, according to an international study.

Lasers Put A Shine On Metals

Posted: 09 Nov 2009 08:00 AM PST

Polishing metal surfaces is a demanding but monotonous task, and it is difficult to find qualified young specialists. Polishing machines do not represent an adequate alternative because they cannot get to difficult parts of the surface. A new solution is provided by laser polishers.

Pregnant Women Risk Early Delivery From Using Psychiatric Medication

Posted: 09 Nov 2009 08:00 AM PST

Women who used psychiatric medication during pregnancy have triple the odds of delivering prematurely.

Nanomedicine Promising For Treating Spinal Cord Injuries, Findings Show

Posted: 09 Nov 2009 05:00 AM PST

Researchers have discovered a new approach for repairing damaged nerve fibers in spinal cord injuries using nano-spheres that could be injected into the blood shortly after an accident.

Developmental Delay Could Stem From Nicotinic Receptor Deletion

Posted: 09 Nov 2009 05:00 AM PST

The loss of a gene through deletion of genetic material on chromosome 15 is associated with significant abnormalities in learning and behavior, say researchers in a new study.

Archaeologists Uncover Prehistoric Landscape Beneath Oxford University, England

Posted: 09 Nov 2009 05:00 AM PST

Archaeologists excavating the former Radcliffe Infirmary site in Oxford have uncovered evidence of a prehistoric monumental landscape stretching across the gravel terrace between the Thames and Cherwell rivers.

Scientists Reveal How Induced Pluripotent Stem Cells Differ From Embryonic Stem Cells

Posted: 09 Nov 2009 05:00 AM PST

The same genes that are chemically altered during normal cell differentiation, as well as when normal cells become cancer cells, are also changed in stem cells that scientists derive from adult cells, according to new research.

Super-fast Quantum Computer Gets Ever Closer: Quantum Particles Pinned Down

Posted: 09 Nov 2009 05:00 AM PST

Researchers have succeeded in getting hold of the environment of a quantum particle. This allows them to exercise greater control over a single electron, and brings the team of researchers a step closer still to the super-fast quantum computer.

Why Some People Get Sick From Harmless Smells

Posted: 09 Nov 2009 05:00 AM PST

People who become ill from harmless smells are not being silly, says a researcher. Rather, they perceive these smells differently than other people. The smell is detected more rapidly by the brain and processed more deeply. If you expect to become ill from a smell, then the smell in question might really make you ill.

Discovery Of The Oldest European Marsupial In Southwest France

Posted: 09 Nov 2009 02:00 AM PST

Remains of one of the oldest known marsupials have been recovered in Charente-Maritime, France, by palaeontologists. This discovery raises a new hypothesis about the dispersal route of the earliest marsupial mammals.

Drug Candidate For Treating Spinal Muscular Atrophy Identified

Posted: 09 Nov 2009 02:00 AM PST

A chemical cousin of the common antibiotic tetracycline might be useful in treating spinal muscular atrophy, a currently incurable disease that is the leading genetic cause of death in infants. The new molecule fixes a mistake in a cellular processing mechanism called RNA splicing, thereby boosting the levels of a protein whose deficiency in neurons causes the disease.

Consumers Spend More On Products With Detailed Nutritional Information

Posted: 09 Nov 2009 02:00 AM PST

People would be willing to pay more for products that carry detailed nutritional information than for the so-called light items, according to a new study on the nutritional labeling of breakfast biscuits.

Low Vitamin D Levels Explains Most End-stage Renal Disease Risk In African-Americans

Posted: 09 Nov 2009 02:00 AM PST

Low levels of vitamin D may account for nearly 60 percent of the elevated risk of end-stage renal disease in African-Americans, according to a new report.

Boat Tail Reduces Truck Fuel Consumption By 7.5 Percent

Posted: 09 Nov 2009 02:00 AM PST

A boat tail, a tapering protrusion mounted on the rear of a truck, leads to fuel savings of 7.5 percent. This is due to dramatically improved aerodynamics, as shown by road tests conducted by the Dutch PART (Platform for Aerodynamic Road Transport) public-private partnership platform.

Dangers Of Incapacitating Chemical Weapons And Widespread Misuse Of Riot Control Agents

Posted: 09 Nov 2009 02:00 AM PST

Seven years ago, Russian Security Forces employed a secret incapacitating chemical weapon in their attempt to free 800 hostages held in a Moscow theatre by armed Chechen fighters. Over 120 hostages were killed by the incapacitant and many more continue to suffer long term health problems. Despite reports of further Russian research and use of incapacitants, the international community has refused to address the dangers of the development and proliferation of such weapons, according to a new report.

Nitrogen Loss Threatens Desert Plant Life, Study Shows

Posted: 08 Nov 2009 11:00 PM PST

As the climate gets warmer, arid soils lose nitrogen as gas, reports a new study. That could lead to deserts with even less plant life than they sustain today, say the researchers.

Approved Lymphoma Drug Shows Promise In Early Tests Against Bone Cancer

Posted: 08 Nov 2009 11:00 PM PST

A drug already approved for the treatment of lymphoma may also slow the growth of the most deadly bone cancer in children and teens, according to an early-stage study.

How Size Matters For Catalysts: Study Links Size, Activity, Electronic Properties

Posted: 08 Nov 2009 11:00 PM PST

University of Utah chemists demonstrated the first conclusive link between the size of catalyst particles on a solid surface, their electronic properties and their ability to speed chemical reactions. The study is a step toward the goal of designing cheaper, more efficient catalysts to increase energy production, reduce Earth-warming gases and manufacture a wide variety of goods from medicines to gasoline.

New Plastic Optical Fiber Technology May Revolutionize High Speed Last-mile Communication Networks

Posted: 08 Nov 2009 11:00 PM PST

It may look like little more than fishing line, but plastic optical fiber or POF promises to revolutionize high-speed last-mile communications networks.

Nutritional Value Of Andalusian Lupins Revealed

Posted: 08 Nov 2009 11:00 PM PST

Researchers in Spain have found that several species of lupins from the mountains of Andalusia have a protein content similar to that of other cultivated legumes.

Health Information Not Communicated Well To Minority Populations, Researcher Finds

Posted: 08 Nov 2009 11:00 PM PST

According to the Institute of Medicine, more than 90 million Americans suffer from low health literacy, a mismatch between patients' abilities to understand health care information and providers' abilities to communicate complex medical information in an understandable manner. In two recent studies, researchers found that two groups -- those with limited English proficiency and those with disabilities -- experience significantly lower health literacy than the general population.

MESSENGER Spacecraft Reveals More Hidden Territory On Mercury

Posted: 07 Nov 2009 09:00 PM PST

A NASA spacecraft gliding over the battered surface of Mercury for the second time this year has revealed more previously unseen real estate on the innermost planet. The probe also has produced several science firsts and is returning hundreds of new photos and measurements of the planet's surface, atmosphere and magnetic field.

Cassini Makes Successful Flight Through Plume Of Saturn's Moon Enceladus

Posted: 07 Nov 2009 09:00 PM PST

The Cassini spacecraft has weathered the Monday, Nov. 2, flyby of Saturn's moon Enceladus in good health and has been sending images and data of the encounter back to Earth. Cassini had approached Enceladus more closely before, but this passage took the spacecraft on its deepest plunge yet through the heart of the plume shooting out from the south polar region. Scientists are eagerly sifting through the results.

Deep Creep Means Milder, More Frequent Earthquakes Along Southern California's San Jacinto Fault

Posted: 07 Nov 2009 09:00 PM PST

New research demonstrates that deep creep may mean milder, more frequent earthquakes along SoCal's San Jacinto fault, making it a less likely candidate for a major earthquake than its neighbor to the east, the Southern San Andreas fault.

Scientists Visualize How Bacteria Talk To One Another

Posted: 07 Nov 2009 09:00 PM PST

Using imaging mass spectrometry, researchers have developed tools that will enable scientists to visualize how different cell populations of cells communicate. Their study shows how bacteria talk to one another -- an understanding that may lead to new therapeutic discoveries for diseases ranging from cancer to diabetes and allergies.

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