Thursday, July 30, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Wind Estimate 'Shortens' Saturn's Day By Five Minutes

Posted: 30 Jul 2009 05:00 PM PDT

A new way of detecting how fast large gaseous planets are rotating suggests Saturn's day lasts 10 hours, 34 minutes and 13 seconds -- over five minutes shorter than previous estimates that were based on the planet's magnetic fields.

'Corrective Genes' Closer Due To Enzyme Modification

Posted: 30 Jul 2009 05:00 PM PDT

Scientists have re-engineered a human enzyme, a protein that accelerates chemical reactions within the human body, to become highly resistant to harmful agents such as chemotherapy.

E-Noses: Testing Their Mettle Against Fly Noses

Posted: 30 Jul 2009 05:00 PM PDT

Scientists have developed a new system for comparing the sensory performance of electronic noses against that of the fly -- a breakthrough which should lead to improved e-nose performance.

Smoking Increases Potential For Metastatic Pancreatic Cancer

Posted: 30 Jul 2009 05:00 PM PDT

Smoking has once again been implicated in the development of advanced cancer. Exposure to nicotine by way of cigarette smoking may increase the likelihood that pancreatic ductal adenocarcinoma will become metastatic, according to new research.

Game Utilizes Human Intuition To Help Computers Solve Complex Problems

Posted: 30 Jul 2009 05:00 PM PDT

A new computer game prototype combines work and play to help solve a fundamental problem underlying many computer hardware design tasks.

When It Comes To Going Green, People Want Smaller Gains Now, Not Bigger Gains Later

Posted: 30 Jul 2009 05:00 PM PDT

People make environmental choices the same way they manage money, preferring smaller gains right away to bigger gains later, according to new research.

Scientists Create Energy-burning Brown Fat In Mice

Posted: 30 Jul 2009 02:00 PM PDT

Researchers have shown that they can engineer mouse and human cells to produce brown fat, a natural energy-burning type of fat that counteracts obesity. If such a strategy can be developed for use in people, the scientists say, it could open a novel approach to treating obesity and diabetes.

New Chlamydia Test Offers Rapid, Pain-free Test For Men

Posted: 30 Jul 2009 02:00 PM PDT

A new urine test will allow doctors to diagnose chlamydia infection in men within the hour, improving the ability to successfully treat the infection on the spot and prevent re-transmission.

Organic Food Not Nutritionally Better Than Conventionally-produced Food, Review Of Literature Shows

Posted: 30 Jul 2009 02:00 PM PDT

There is no evidence that organically produced foods are nutritionally superior to conventionally produced foodstuffs, according to a new study.

Reprogrammed Role For The Androgen Receptor

Posted: 30 Jul 2009 02:00 PM PDT

The androgen receptor -- a protein ignition switch for prostate cancer cell growth and division -- is a master of adaptability. When drug therapy deprives the receptor of androgen hormones, thereby halting cell proliferation, the receptor manages to find an alternate growth route. A new study demonstrates how.

Physicists Find Way To Explore Microscopic Systems Through Holographic Video

Posted: 30 Jul 2009 02:00 PM PDT

Physicists have developed a technique to record 3-D movies of microscopic systems, such as biological molecules, through holographic video. The work has potential to improve medical diagnostics and drug discovery.

Safety Of Combat Military Vehicles Examined

Posted: 30 Jul 2009 02:00 PM PDT

An academic is working on research that could help protect the lives of military based in Afghanistan. He has been testing how safe vehicles with titanium alloys are when attacked by bullets or explosions.

Nanotubes May Reach A Meter Long With New Technique

Posted: 30 Jul 2009 11:00 AM PDT

Scientists have developed a method for making "odako," bundles of single-walled carbon nanotubes named for the traditional Japanese kites they resemble. It may lead to a way to produce meter-long strands of nanotubes, which by themselves are no wider than a piece of DNA.

Male Germ Cells Can Be Directly Converted Into Other Cell Types

Posted: 30 Jul 2009 11:00 AM PDT

Researchers have found a way to directly convert spermatogonial stem cells, the precursors of sperm cells, into tissues of the prostate, skin and uterus.

Physicists Show Way To Count Sweets In A Jar -- From Inside The Jar

Posted: 30 Jul 2009 11:00 AM PDT

The question of how many sweets are in a jar depends on the shapes and sizes of the sweets, the size of the jar, and how it is filled. Guessing the number of sweets in the jar is difficult because the sweets located at the center of the jar are hidden from view and can't be counted. Researchers have now determined how sweets pack from inside the jar, making it easier to more accurately count them.

Study Of Pulmonary Hypertension Treatment In Sickle Cell Patients Stopped Early Due To Safety Concerns

Posted: 30 Jul 2009 11:00 AM PDT

The National Heart, Lung and Blood Institute of the NIH has stopped a clinical trial testing a drug treatment for pulmonary hypertension in adults with sickle cell disease nearly one year early due to safety concerns. In an interim review of safety data, researchers found that participants taking sildenafil (Revatio) were significantly more likely to have serious medical problems. The most common problem was episodes of severe pain called sickle cell crises. No deaths have been associated with the drug in the clinical trial.

Science Adopts A New Definition Of Seawater

Posted: 30 Jul 2009 11:00 AM PDT

The world's peak ocean science body has adopted a new definition of seawater developed by scientists to make climate projections more accurate.

Rates Of Severe Childhood Obesity Have Tripled

Posted: 30 Jul 2009 11:00 AM PDT

Rates of severe childhood obesity have tripled in the last 25 years, putting many children at risk for diabetes and heart disease, according to a new report.

Adult Brain Can Change Within Seconds

Posted: 30 Jul 2009 08:00 AM PDT

The human brain can adapt to changing demands even in adulthood, but neuroscientists have now found evidence of it changing with unsuspected speed. Their findings suggest that the brain has a network of silent connections that underlie its plasticity.

Nanotech Particles Affect Brain Development In Mice

Posted: 30 Jul 2009 08:00 AM PDT

Maternal exposure to nanoparticles of titanium dioxide (TiO2) affects the expression of genes related to the central nervous system in developing mice. Researchers found that mice whose mothers were injected with the nanoparticles while pregnant showed alteration in gene expression related to neurological dysfunction.

Little-known Protein Found To Be Key Player in Building and Maintaining Healthy Cells

Posted: 30 Jul 2009 08:00 AM PDT

Scientists have found that a little-understood protein previously implicated in a rare genetic disorder also plays critical role in building and maintaining healthy cells. Even more surprising, is that the protein builds structures by fusing intracellular membranes in a fundamentally new way.

New Drug For Children With High-risk Leukemia

Posted: 30 Jul 2009 08:00 AM PDT

New research has indicated a drug already in clinical trials for a blood disease common in adults may be relevant for acute childhood leukemia.

Floating Docks Designed To Harness Clean Energy For NYC

Posted: 30 Jul 2009 08:00 AM PDT

An architecture professor with an architecture student has designed a network of modular floating docks to harness clean energy for New York City. According the the designers, the tidal action of New York City rivers would be strong enough to run the system. The docking stations would plug into the conventional piers of New York City. Eventually, the piers would be extended further into the river to optimize clean energy generation while increasing public green space and tidal pools for wildlife.

Overconfidence Among Teenage Students Can Stunt Crucial Reading Skills

Posted: 30 Jul 2009 08:00 AM PDT

Too much confidence among teenage students can be harmful. In a study that reinforces the danger of indiscriminately bolstering a child's self esteem -- whether the child earns that distinction or not -- the results show a clear connection between overconfident students and low reading comprehension, and suggest recommendations for parents and teachers.

Discovery Of Elephants' Oldest Known Relative

Posted: 30 Jul 2009 05:00 AM PDT

Paleontologists have discovered one of the oldest modern ungulates related to the elephant order.

Early Warning: Key Alzheimer's Brain Changes Observed In Unimpaired Older Humans

Posted: 30 Jul 2009 05:00 AM PDT

New research has uncovered an early disruption in the process of memory formation in older humans who exhibit some early brain changes associated with Alzheimer's disease but show little or no memory impairment. The work sheds light on the role of amyloid protein in memory impairment and may lead to development of strategies for predicting and treating cognitive decline in individuals who are at-risk for AD.

'Shrimp Shell Cocktail' To Fuel Cars And Trucks

Posted: 30 Jul 2009 05:00 AM PDT

Call it a "shrimp cocktail" for your fuel tank. Scientists are reporting development of a catalyst made from shrimp shells that could transform production of biodiesel fuel into a faster, less expensive, and more environmentally friendly process.

Important Insight Into Apoptosis Or Programmed Cell Death

Posted: 30 Jul 2009 05:00 AM PDT

Researchers have gained a better understanding of the process that cells go through when they die. This process known as "apoptosis" or programmed cell death, is a normal process in the human body which removes perhaps a million cells a second.

Capturing Images In Non-traditional Way

Posted: 30 Jul 2009 05:00 AM PDT

New research in imaging may lead to advancements for the Air Force in data encryption and wide-area photography with high resolution.

Cancers Set To 'Explode' In Latino/a Populations, Researcher Says

Posted: 30 Jul 2009 05:00 AM PDT

The Latino/a population in the United States is expected to triple by 2050. And with that growth, says a professor, will come a rise in the number of individuals from that population who are diagnosed with cancer. To better serve the needs of this population, with respect to cancer prevention, detection and treatment, she said, improvements must be made in two areas: knowledge and access.

Synchronized Swimming Of Algae

Posted: 30 Jul 2009 02:00 AM PDT

Using high-speed cinematography, scientists have discovered that individual algal cells can regulate the beating of their flagella in and out of synchrony in a manner that controls their swimming trajectories.

Biomarkers May Help Predict Risk Of Alzheimer's Disease In Patients With Mild Cognitive Impairment

Posted: 30 Jul 2009 02:00 AM PDT

Several cerebrospinal fluid biomarkers showed good accuracy in identifying patients with mild cognitive impairment who progressed to Alzheimer's disease, according to a new study.

NOAA Bans Commercial Harvesting Of Krill

Posted: 30 Jul 2009 02:00 AM PDT

The National Oceanic and Atmospheric Administration has published a final rule in the Federal Register prohibiting the harvesting of krill in the Exclusive Economic Zone off the coasts of California, Oregon, and Washington. The rule goes into effect on August 12, 2009. Krill are a small shrimp-like crustacean and a key source of nutrition in the marine food web.

Brazil Proves Developing Countries Can Use Generic Medicines To Fight HIV/AIDS Epidemic

Posted: 30 Jul 2009 02:00 AM PDT

Researchers say Brazil's push for inexpensive, low-cost HIV and AIDS treatments has helped contain the virus during the last 20 years.

GOES-O Satellite Reaches Orbit And Renamed GOES-14

Posted: 30 Jul 2009 02:00 AM PDT

On June 27, 2009, the Geostationary Operational Environmental Satellite, GOES-O, soared into space during a spectacular launch from the Cape Canaveral Air Force Station in Florida. GOES-O has now been renamed and its solar array has been deployed.

Mental, Emotional And Behavioral Disorders Can Be Prevented In Young People

Posted: 30 Jul 2009 02:00 AM PDT

Around one in five young people in the U.S. have a current mental, emotional, or behavioral disorder. About half of all adults with mental disorders recalled that their disorders began by their mid-teens and three-quarters by their mid-20s. Early onset of mental health problems have been associated with poor outcomes such as failure to complete high school, increased risk for psychiatric and substance problems, and teen pregnancy.

Study Catches Two Bird Populations As They Split Into Separate Species

Posted: 29 Jul 2009 11:00 PM PDT

A new study finds that a change in a single gene has sent two closely related bird populations on their way to becoming two distinct species. The study is one of only a few to investigate the specific genetic changes that drive two populations toward speciation.

Reducing Levels Of Specific Protein Delays Aging Of Multiple Tissues In Lab Mice

Posted: 29 Jul 2009 11:00 PM PDT

Partial inactivation of p38MAPK protein was sufficient to prevent age-induced cellular changes in multiple tissues, as well as improve the proliferation and regeneration of islet cells, without affecting the tumor suppressor function of p16 in mice.

Andean Salars: Reflections Of Earth And Climate History

Posted: 29 Jul 2009 11:00 PM PDT

Vast mirrors send reflections of snow-topped volcanic cones and lunar landscapes are fringed with giant cacti, the only remaining representatives of plant life. The salars, salt-crust deserts perched 4000 m high on the Andes of Bolivia, Argentina and Chile, have a fascinating beauty. And are extreme hostile environments. However, they also captivate scientists owing to the information they hold within them.

Factors That Increase Death In Stroke Patients Ages 15 To 49 identified

Posted: 29 Jul 2009 11:00 PM PDT

Heavy drinking, heart failure, cancer, type 1 diabetes and preceding infection were identified as predictors of death among stroke patients 15 to 49 years old.

Systems Biology Recommended As A Clinical Approach To Cancer

Posted: 29 Jul 2009 11:00 PM PDT

Bioinformatics specialists are advocating the use of systems biology as an innovative clinical approach to cancer. This approach could result in the development of improved diagnostic tools and treatment options, as well as potential new drug targets to help combat the many potentially fatal types of the disease.

Video Game Minority Report: Lots Of Players, Few Characters

Posted: 29 Jul 2009 11:00 PM PDT

The first comprehensive census of video game characters finds Latinos nearly invisible and women and other groups underrepresented. Combined with wide reach of video games and heavy play by minorities, findings suggest lack of representation in games may have significant social impacts.

Jellyfish And Other Small Sea Creatures Linked To Large-scale Ocean Mixing

Posted: 29 Jul 2009 08:00 PM PDT

Using a combination of theoretical modeling, energy calculations, and field observations, researchers have for the first time described a mechanism that explains how some of the ocean's tiniest swimming animals can have a huge impact on large-scale ocean mixing.

Comprehensive Look At Rare Leukemia Finds Relatively Few Genetic Changes Launch Disease

Posted: 29 Jul 2009 08:00 PM PDT

The most comprehensive analysis yet of the genome of childhood acute myeloid leukemia found only a few mistakes in the genetic blueprint, suggesting the cancer arises from just a handful of missteps, according to new findings.

Cytoplasmic Talk Of Retroviruses, Such As HIV, Helps Them Spread From Cell To Cell

Posted: 29 Jul 2009 08:00 PM PDT

Retroviruses such as HIV that are already within cells are much more easily transmitted when they are next to uninfected cells than if they are floating free in the bloodstream. Now, researchers have made movies of viral activity within cells that help explain why cell-to-cell transmission is so efficient and provide potential targets for a new generation of AIDS drugs.

Anesthesia Not Harmful For Babies During Birth Process, Study Suggests

Posted: 29 Jul 2009 08:00 PM PDT

Researchers have found that children exposed to anesthesia during cesarean section are not at any higher risk for learning disabilities later in life than children not delivered by C-section.

The 15-Minute Genome: Faster, Cheaper Genome Sequencing On The Way

Posted: 29 Jul 2009 08:00 PM PDT

In the race for faster, cheaper ways to read human genomes, Pacific Biosciences is hoping to set a new benchmark with technology that watches DNA being copied in real time. The device is being developed to sequence DNA at speeds 20,000 times faster than second-generation sequencers currently on the market and will ultimately have a price tag of $100 per genome.

Adult Cancer Survivors At Increased Risk Of Psychological Distress

Posted: 29 Jul 2009 08:00 PM PDT

Long-term survivors of cancer that developed in adulthood are at increased risk of experiencing serious psychological distress, according to a new report.

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