Friday, July 10, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


New Kind Of Astronomical Object Around Black Hole: Living Fossil Records 'Supermassive' Kick

Posted: 10 Jul 2009 11:00 AM PDT

The tight cluster of stars surrounding a supermassive black hole after it has been violently kicked out of a galaxy represents a new kind of astronomical object and a fossil record of the kick. A new article discusses the theoretical properties of "hypercompact stellar systems" and suggests that hundreds of these faint star clusters might be detected at optical wavelengths in our immediate cosmic environment.

Hearing Manipulated By Electronics

Posted: 10 Jul 2009 11:00 AM PDT

An implanted electronic ion pump in organic material can be used to carry signals to specific cells in the nervous system and in this way treat various illnesses. In a unique study, researchers have used the pumps to successfully manipulate the hearing in laboratory animals. The technique represents a breakthrough for the machine-to-brain interface, with opportunities for greater symbiosis between electronics and biological systems.

Ozone, Nitrogen Change The Way Rising Carbon Dioxide Affects Earth's Water

Posted: 10 Jul 2009 11:00 AM PDT

Through a recent modeling experiment, researchers have found that future concentrations of carbon dioxide and ozone in the atmosphere and of nitrogen in the soil are likely to have an important but overlooked effect on the cycling of water from sky to land to waterways.

Dry Mouth Linked To Prescription And Over The Counter Drugs

Posted: 10 Jul 2009 11:00 AM PDT

Approximately ninety-one percent of dentists say patients complaining about dry mouth are taking multiple medications, according to a nationwide survey.

Cellphone TV? Viewing Photos And Video On Cell Phone Made Easier With New Mini Beamer

Posted: 10 Jul 2009 11:00 AM PDT

Looking at photos on a cellphone display can be somewhat arduous. A new mini beamer will make it easier. The beamer is so small that it can be integrated in a cellphone or a PDA. As it does not need an extra light source it also conserves the battery.

Scientific Achievements Less Prominent Than A Decade Ago

Posted: 10 Jul 2009 11:00 AM PDT

As the 40th anniversary of the moon landing approaches, a new report finds that overwhelming majorities of Americans believe that science has had a positive effect on society and that science has made life easier for most people. The public also rates scientists highly and believes government investments in science pay off in the long term.

Nanopillars Promise Cheap, Efficient, Flexible Solar Cells

Posted: 10 Jul 2009 08:00 AM PDT

Researchers have grown dense arrays of single-crystal semiconductors arranged as nanoscale pillars on low-cost, aluminum foil substrates. When the nanopillars are combined with a transparent, positively charged semiconductor that serves as a window, the resulting 3-D photovoltaic promises efficient, cheap, flexible solar cells.

Attractive Males Release Fewer Sperm

Posted: 10 Jul 2009 08:00 AM PDT

Attractive males release fewer sperm per mating to maximize their chances of producing offspring across a range of females, according to a new article on the evolution of ejaculation strategies. The findings suggest that, paradoxically, matings with attractive males may be less fertile than those with unattractive ones.

Straighten Up And Fly Right: Moths Benefit More From Flexible Wings Than Rigid

Posted: 10 Jul 2009 08:00 AM PDT

New research using high-speed digital imaging shows that, at least for some insects, wings that flex and deform, something like what happens to a heavy beach towel when you snap it to get rid of the sand, are the best for staying aloft.

Scientists Solve Mystery About Why HIV Patients Are More Susceptible To TB Infection

Posted: 10 Jul 2009 08:00 AM PDT

Scientists took an important first-step toward the development of new treatments to help people with HIV battle Mycobacterium tuberculosis infection. HIV interferes with the cellular and molecular mechanisms used by the lungs to fight TB infection.

Prairie Dogs: Influencing The Accumulation Of Metals In Plants?

Posted: 10 Jul 2009 08:00 AM PDT

Elemental hyperaccumulation in plants is hypothesized to represent a plant defense mechanism. The objective of this study was to determine whether selenium hyperaccumulation offers plants long-term protection from the black-tailed prairie dog. This study is the first to test the ecological significance of hyperaccumulation over a long period in a hyperaccumulator's natural habitat.

Withdrawal Syndrome After Consumption Of Designer Drug 'Spice Gold'

Posted: 10 Jul 2009 08:00 AM PDT

A clinical report from Dresden supports the impression that the street drug "Spice Gold" is strongly addictive. Researchers describe a young man who developed physical withdrawal symptoms after regular consumption of this designer drug, accompanied by a dependence syndrome.

Reduced Diet Thwarts Aging, Disease In Monkeys

Posted: 10 Jul 2009 05:00 AM PDT

The bottom-line message from a decades-long study of monkeys on a restricted diet is simple: Consuming fewer calories leads to a longer, healthier life. Researchers report that a nutritious but reduced-calorie diet blunts aging and significantly delays the onset of such age-related disorders as cancer, diabetes, cardiovascular disease and brain atrophy.

Potential Fix For Damaged Knees Identified

Posted: 10 Jul 2009 05:00 AM PDT

Investigators have shown that a biodegradable scaffold or plug can be used to treat patients with damaged knee cartilage. The study is unique in that it used serial magnetic resonance imaging and newer quantitative T2 mapping to examine how the plug incorporated itself into the knee.

Obsidian 'Trail' Provides Clues To How Humans Settled, Interacted In Kuril Islands

Posted: 10 Jul 2009 05:00 AM PDT

Archaeologists have used stone tools to answer many questions about human ancestors in both the distant and near past and now they are analyzing the origin of obsidian flakes to better understand how people settled and interacted in the inhospitable Kuril Islands.

Single Thawed Embryo Transfer After PGD Does Not Affect Pregnancy Rates

Posted: 10 Jul 2009 05:00 AM PDT

Transferring just one embryo at a time to a woman's womb after embryos have undergone preimplantation genetic diagnosis (PGD) and freezing at the blastocyst stage has become a real option after researchers achieved pregnancy rates that were as good as those for blastocysts that had not had a cell removed for PGD before freezing. Their results mean that it will be possible to reduce the number of multiple pregnancies after PGD and the consequent complications associated with these pregnancies.

Treating Lazy Eyes With A Joystick

Posted: 10 Jul 2009 05:00 AM PDT

Researchers have developed a computer game therapy that is now ready for treating adults.

Severity Of Mental Disease Can Be Predicted By Family History, Study Suggests

Posted: 10 Jul 2009 05:00 AM PDT

We've all been asked at routine visits to the doctor to record our family's history with medical problems like cancer, diabetes or heart disease. But when it comes to mental disorders, usually mum's the word.

Methane-eating Microbes Can Use Iron And Manganese Oxides To 'Breathe'

Posted: 10 Jul 2009 02:00 AM PDT

Iron and manganese compounds, in addition to sulfate, may play an important role in converting methane to carbon dioxide and eventually carbonates in the Earth's oceans, according researchers looking at anaerobic sediments. These same compounds may have been key to methane reduction in the early, oxygenless days of the planet's atmosphere.

Oxygen Test Has Potential To Detect Some Critical Congenital Heart Defects In Newborns

Posted: 10 Jul 2009 02:00 AM PDT

Early detection of critical congenital heart disease is important for avoiding serious health consequences. A noninvasive measure of oxygen saturation in the blood is a reasonable way to detect congenital heart disease in newborns, but there is not yet enough data available to make the test mandatory. The associations call for more research on the topic.

Enzyme Fights Mutated Protein In Inherited Parkinson's Disease

Posted: 10 Jul 2009 02:00 AM PDT

An enzyme that naturally occurs in the brain helps destroy the mutated protein that is the most common cause of inherited Parkinson's disease, researchers have found.

Risk Of Breast Cancer And A Single-nucleotide Polymorphism

Posted: 10 Jul 2009 02:00 AM PDT

A single-nucleotide polymorphism is associated with increased risk of estrogen receptor-positive and -negative breast cancer, according to a new study.

Better Looks At Mars Minerals For Instrument On NASA's Mars Odyssey Orbiter

Posted: 10 Jul 2009 02:00 AM PDT

A new orbit at an earlier time of day is increasing the sensitivity and efficiency of ASU's THEMIS multi-band camera on NASA's Mars Odyssey spacecraft.

Difference In The Way Children With Autism Learn New Behaviors Described

Posted: 10 Jul 2009 02:00 AM PDT

Researchers have uncovered important new insights into the neurological basis of autism.

Simulations Illuminate Universe's First Twin Stars

Posted: 09 Jul 2009 11:00 PM PDT

The earliest stars in the universe formed not only as individuals, but sometimes also as twins, according to a new article in Science. By creating simulations of the early universe, astrophysicists have gained the most detailed understanding to date of the formation of the first stars.

New Discovery To Aid In Diagnosis And Treatment Of Kidney Disease

Posted: 09 Jul 2009 11:00 PM PDT

Researchers have identified the target antigen PLA2R in patients with idiopathic membranous nephropathy (kidney disease), which has implications for the diagnosis and treatment of this disease.

Database On Tiny Plant Will Help Scientists Create Better Crops, Biofuels and Medicines

Posted: 09 Jul 2009 11:00 PM PDT

A tiny plant with a long name helps researchers design new crops to help meet increasing demands for food, biofuels, industrial materials, and new medicines. The genes, proteins, and other traits of this plant reside in the Arabidopsis Information Resource (TAIR) database. TAIR just released a new version of the genome sequence, which includes an array of improvements and novel features that promise to accelerate this critical research.

Bone Coupling Factor Key To Skeletal Health

Posted: 09 Jul 2009 11:00 PM PDT

Previously, scientists had searched for but missed the biological link between bone growth and bone remodeling -- a natural give-and-take system that is crucial to skeletal health. A new study pinpoints the coupling factor as transforming growth factor beta-1, or TGF beta-1.

One-stop Shop For Grid Computing

Posted: 09 Jul 2009 11:00 PM PDT

From searching for cures for disease to monitoring the Earth's atmosphere, grid computing has become essential to data-intensive research. But accessing limited grid resources is not always a simple task.

No Psychological Risk In Children Next-Born After Stillbirth, Study Suggests

Posted: 09 Jul 2009 11:00 PM PDT

There is no evidence that children next-born after stillbirth are clinically at risk compared to children of non-bereaved mothers, according to a new study. However, the study did find evidence of less optimal mother-child interaction.

'Hotspots' Of Human Impact On Coastal Areas Ranked

Posted: 09 Jul 2009 08:00 PM PDT

Coastal marine ecosystems are at risk worldwide as a result of human activities, according to scientists. The authors have performed the first integrated analysis of all coastal areas of the world.

Genetic Key To Breast Cancer's Ability To Survive And Spread Identified

Posted: 09 Jul 2009 08:00 PM PDT

New research sheds light on a genetic function that gives breast cancer cells the ability to survive and spread to the bone years after treatment has been administered. The findings support the study of therapies that target this survival capacity and force the death of latent breast cancer cells before they get a chance to metastasize.

Targeting Helpers Of Heat Shock Proteins Could Help Treat Cancer, Cardiovascular Disease

Posted: 09 Jul 2009 08:00 PM PDT

Dissecting how heat shock protein 90 gets steroid receptors into shape to use hormones like estrogen and testosterone could lead to targeted therapies for hormone-driven cancers, such as breast and prostate, that need them as well, researchers say.

MicroRNAs Help Control HIV Life Cycle

Posted: 09 Jul 2009 08:00 PM PDT

Scientists have discovered that specific microRNAs (non-coding RNAs that interfere with gene expression) reduce HIV replication and infectivity in human T-cells. In particular, miR29 plays a key role in controlling the HIV life cycle. The study suggests that HIV may have co-opted this cellular defense mechanism to help the virus hide from the immune system and antiviral drugs.

NuTeV Anomaly Helps Shed Light On Physics Of The Nucleus

Posted: 09 Jul 2009 08:00 PM PDT

A new calculation clarifies the complicated relationship between protons and neutrons in the atomic nucleus and offers a fascinating resolution of the famous NuTeV Anomaly.

Parents' Endorsement Of Vigorous Team Sports Increases Children's Physical Activity

Posted: 09 Jul 2009 08:00 PM PDT

Parents who value strenuous team sports are more likely to influence their children to join a team or at least participate in some kind of exercise, and spend less time in front of the TV or computer, a new study says.

Evolution Guides Cooperative Turn-taking, Game Theory-based Computer Simulations Show

Posted: 09 Jul 2009 05:00 PM PDT

It's not just good manners to wait your turn -- it's actually down to evolution, according to new research. What's more, this behavior can be simulated using a simple computer algorithm and basic genetic laws.

Hitting Cell Hot Spot Could Help Thwart Parkinson's Disease

Posted: 09 Jul 2009 05:00 PM PDT

A new way to 'turn off the taps' in the brain and stop a chemical being released in excess amounts -- which can lead to Parkinson's Disease -- has been developed.

2000-year-old Statue Of An Athlete Sheds Light On Corrosion And Other Modern Challenges

Posted: 09 Jul 2009 05:00 PM PDT

The restoration of a 2,000-year-old bronze sculpture of the famed ancient Greek athlete Apoxyomenos may help modern scientists understand how to prevent metal corrosion, discover the safest ways to permanently store nuclear waste, and understand other perplexing problems.

Give Children Iron Supplements: They Don't Increase Malaria Risk, Study Suggests

Posted: 09 Jul 2009 05:00 PM PDT

Iron supplements do not increase the likelihood of contracting malaria and should not be withheld from children at risk of the disease, despite World Health Organization guidelines to the contrary, a new review suggests.

Method To Efficiently Produce Less Toxic Drugs Using Organic Molecules

Posted: 09 Jul 2009 05:00 PM PDT

Chemists have developed a method to use small organic molecules as catalysts, in the synthesis process called organocatalysis. Such synthesis process takes place during the production of chiral drugs.

Media Tend To Doomsay When Addressing Environmental Issues

Posted: 09 Jul 2009 05:00 PM PDT

Researchers analyzed the role played by the media in creating and spreading a stance regarding the protection of the environment, sustainable development and natural heritage.

Antimatter Positrons Explain Gamma Ray Mystery In Milky Way Galaxy

Posted: 09 Jul 2009 02:00 PM PDT

Astrophysicists have solved a mystery that led some scientists to speculate that the distribution of certain gamma rays in our Milky Way galaxy was evidence of a form of undetectable "dark matter" believed to make up much of the mass of the universe.

Plastics Chemical, Bisphenol A, Retards Growth, Function Of Adult Reproductive Cells

Posted: 09 Jul 2009 02:00 PM PDT

Bisphenol A, a chemical widely used in plastics and known to cause reproductive problems in the offspring of pregnant mice exposed to it, also has been found to retard the growth of follicles of adult mice and hinder their production of steroid hormones, researchers report. Their study is the first to show that chronic exposure to low doses of BPA can impair the growth and function of adult reproductive cells.

First Evidence That Weed Killers Improve Nutritional Value Of A Key Food Crop

Posted: 09 Jul 2009 02:00 PM PDT

Scientists are reporting for the first time that the use of weed killers in farmers' fields boosts the nutritional value of an important food a crop. Application of two common herbicides to several varieties of sweet corn significantly increased the amount of key nutrients termed carotenoids in the corn kernels, according to a new study.

Critical Link Between Obesity And Diabetes Discovered

Posted: 09 Jul 2009 02:00 PM PDT

A new study has shown a critical link between obesity and the onset of Type 2 diabetes, a discovery which could lead to the design of a drug to prevent the disease.

Photography: Blur's Noise And Distortion Reversed

Posted: 09 Jul 2009 02:00 PM PDT

Errant pixels and blurry regions in a photo, whether digital or scanned, are the bane of photographers everywhere. Moreover, in vision processing research degraded photos are common and require restoration to a high-quality un-degraded state.

Do Bilingual Persons Have Distinct Language Areas In The Brain?

Posted: 09 Jul 2009 02:00 PM PDT

A unique single case study suggests that first and second languages of bilingual people are represented in different places in the brain.

Thursday, July 09, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Easter Island Compound Extends Lifespan Of Old Mice: 28 To 38 Percent Longer Life

Posted: 09 Jul 2009 11:00 AM PDT

Researchers report that rapamycin, a compound first discovered in soil of Easter Island, extended the expected lifespan of middle-aged mice by 28 percent to 38 percent. In human terms, this would be greater than the predicted increase in extra years of life if cancer and heart disease were both cured and prevented.

Is Obesity An Oral Bacterial Disease?

Posted: 09 Jul 2009 11:00 AM PDT

Scientists have discovered new links between certain oral bacteria and obesity. In a recent study, the researchers demonstrated that the salivary bacterial composition of overweight women differs from non-overweight women. This preliminary work may provide clues to interactions between oral bacteria and the pathology of obesity. This research may help investigators learn new avenues for fighting the obesity epidemic.

Better Than A Hearing Aid? Better Hearing With Bone Conducted Sound

Posted: 09 Jul 2009 11:00 AM PDT

New technology to hear vibrations through the skull bone has been developed. Besides investigating the function of a new implantable bone conduction hearing aid, researchers have studied the sensitivity for bone conducted sound and also examined the possibilities for a two-way communication system that is utilizing bone conduction in noisy environments.

PET Can Measure Effectiveness Of Novel Breast Cancer Treatment

Posted: 09 Jul 2009 11:00 AM PDT

Positron emission tomography scans in mice can be used to determine whether a novel type of breast cancer treatment is working as intended, study shows.

Beyond Carbon Dioxide: Growing Importance Of Hydrofluorocarbons (HFCs) In Climate Warming

Posted: 09 Jul 2009 11:00 AM PDT

Some of the substances that are helping to avert the destruction of the ozone layer could increasingly contribute to climate warming, according to scientists.

Language Skills In Your Twenties May Predict Risk Of Dementia Decades Later

Posted: 09 Jul 2009 11:00 AM PDT

People who have superior language skills early in life may be less likely to develop Alzheimer's disease decades later, despite having the hallmark signs of the disease, according to new research.

Giant Supernovae Farthest Ever Detected: Dying Stars Shed Light On Universe Formation 11 Billion Years Ago

Posted: 09 Jul 2009 08:00 AM PDT

UC Irvine cosmologists have found two supernovae farther away than any previously detected by using a new technique that could help find other dying stars at the edge of the universe.

Inflammation May Trigger Alzheimer's Disease

Posted: 09 Jul 2009 08:00 AM PDT

New research sheds light on what causes Alzheimer's disease and suggests a possible therapy.

Ice Volume Of Switzerland’s Glaciers Calculated

Posted: 09 Jul 2009 08:00 AM PDT

Switzerland's glaciers have lost twelve percent of their ice volume since 1999. The water stored in Switzerland's glaciers currently equates to about two thirds of the volume of Lake Geneva.

Toxic Chemicals Affect Steroid Hormones Differently In Humans And Invertebrates

Posted: 09 Jul 2009 08:00 AM PDT

In a study with important consequences for studies on the effects of chemicals on steroid responses in humans, scientists have found that -- contrary to earlier assumptions -- enzymes used for the synthesis of steroids in insects, snails, octopuses and corals are unrelated to those used in humans.

Ecological Model City Masdar: City Will Use Renewable Energy And Leave No Carbon Dioxide Or Waste

Posted: 09 Jul 2009 08:00 AM PDT

The city of the future is currently being constructed on the outskirts of Abu Dhabi. Masdar City shall be supplied exclusively with renewable energy and produce neither carbon dioxide nor waste. An underground transportation system, will leave its streets car-free.

Delirium In Hospitalized Adults: Situation Critical, No Relief Available

Posted: 09 Jul 2009 08:00 AM PDT

In a systematic review of the scientific literature on delirium prevention and treatment, investigators found that despite the significant health and financial burdens of delirium for hospitalized adults, no effective way to prevent or treat the condition has been identified.

Explosive Growth Of Life On Earth Fueled By Early Greening Of Planet

Posted: 09 Jul 2009 05:00 AM PDT

Earth's 4.5-billion-year history is filled with several turning points but one of the biggest is the Cambrian explosion of life, roughly 540 million years ago, when complex, multi-cellular life burst out all over the planet. Now, researchers believe they have found the trigger for the Cambrian explosion.

Hearing Improved: First Successful Medical Treatment For Tumor-inducing Genetic Disorder

Posted: 09 Jul 2009 05:00 AM PDT

Treatment with the angiogenesis inhibitor bevacizumab improved hearing and alleviated other symptoms in patients with neurofibromatosis type 2 (NF2).

Domestication Of Chile Pepper Provides Insights Into Crop Origin And Evolution

Posted: 09 Jul 2009 05:00 AM PDT

Chile peppers have long played an important role in the diets of Mesoamerican people. Capsicum annuum is one of five domesticated species of chiles and is one of the primary components of these diets. However, little is known regarding the original location of domestication of C. annuum and the genetic diversity in wild relatives. Researchers have now found a large amount of diversity in individuals from the Yucatan Peninsula, making this a center of diversity for chiles.

New Treatment Avenue For Acute Myeloid Leukemia?

Posted: 09 Jul 2009 05:00 AM PDT

Medical researchers have developed the first leukemia therapy that targets a protein, CD123, on the surface of cancer stem cells that drive acute myeloid leukemia, which is an aggressive disease with a poor outcome.

How Mitochondria Get Their Membranes Bent

Posted: 09 Jul 2009 05:00 AM PDT

Underneath their smooth surface mitochondria harbor an elaborately folded inner membrane. It holds a multitude of bottleneck like invaginations, which expand into elongated cavities. Now researchers have identified two proteins linked in an antagonistic manner that are relevant for governing inner membrane structure.

Plain Language For Health Care Professionals To Improve Communication With Patients

Posted: 09 Jul 2009 05:00 AM PDT

The doctor speaks "medicalese," and the patient's eyes glaze over. Researchers noticed this familiar failure to communicate when health care researchers asked people to take part in studies. So they created a Toolkit that illustrates strategies for communicating clearly with study participants.

Spontaneous Assembly: A New Look At How Proteins Assemble And Organize Themselves Into Complex Patterns

Posted: 09 Jul 2009 02:00 AM PDT

Self-assembling and self-organizing systems are the Holy Grails of nanotechnology, but nature has been producing such systems for millions of years. A team of scientists has taken a unique look at how thousands of bacterial membrane proteins are able to assemble into clusters that direct cell movement to select chemicals in their environment. Their results provide valuable insight into how complex periodic patterns in biological systems can be generated and repaired.

Possible Drug Target Found For One Of The Most Aggressive Breast Cancers

Posted: 09 Jul 2009 02:00 AM PDT

Investigators have identified a gene that could be an important therapeutic target in the treatment of the most aggressive forms of breast cancer. Currently, patients with these cancers have few treatment options.

Saharan Dust Storms Linked To Enigmatic Fertilizer Plankton In Ocean

Posted: 09 Jul 2009 02:00 AM PDT

Scientists have returned after six weeks on the Cape Verde Islands, 800 kilometers off the West African coast. They collected air and water samples in the search for a link between Saharan dust storms and the biological productivity of the ocean. The results were intriguing: the waters off Cape Verde contain huge amounts of the recently discovered cyanobacteria "UCYN-A", an enigmatic fertilizer alga whose characteristics are puzzling to scientists.

3-D Protein Map To Aid Stroke And Cancer Research Drafted

Posted: 09 Jul 2009 02:00 AM PDT

Researchers have generated a computer map of the protein acid-sensing ion channel-1, or ASIC-1, an important neurological pathway. The map greatly simplifies the testing of drugs or compounds designed to protect neurons, regulate their molecular interactions or isolate brain tumors. The ASIC-1 work began with a toxin found only in the venom of the Trinidad chevron tarantula.

Some Particles Cool Climate, Others Add To Global Warming

Posted: 09 Jul 2009 02:00 AM PDT

Particles cool down the climate, but to which extent? This has remained an unanswered question for scientists. A new study brings the scientific community a step closer to solving the mystery.

Health Clinic Conditions May Be To Blame For Decrease In Primary Care Physicians

Posted: 09 Jul 2009 02:00 AM PDT

Adverse work conditions may be to blame for the decline in the number of primary care physicians nationwide, according to a new study.

Physics Of Bumpy Roads: What Makes Roads Ripple Like A Washboard?

Posted: 08 Jul 2009 11:00 PM PDT

Just about any road with a loose surface -- sand or gravel or snow -- develops ripples that make driving a very shaky experience. Physicists have recreated this "washboard" phenomenon in the lab with surprising results: ripples appear even when the springy suspension of the car and the rolling shape of the wheel are eliminated. The discovery may smooth the way to designing improved suspension systems that eliminate the bumpy ride.

Mice With Skin Condition Help Scientists Understand Tumor Growth

Posted: 08 Jul 2009 11:00 PM PDT

Cancerous tumors sometimes form at the site of chronic wounds or injury, but the reason why is not entirely clear. Now researchers have engineered mice with a persistent wound-like skin condition, and the mice are helping them understand the tumor-promoting effects of long-standing wounds and injuries.

World’s First-hydrogen Powered Yacht With A Fully Integrated Laboratory Will Study Mediterranean Pollution

Posted: 08 Jul 2009 11:00 PM PDT

The objective of the Zero CO2 project is to sail around the Mediterranean using a clean carbon-free auxiliary motor (gasoline powered motors are commonly used in yachts for all port maneuvers). A 12m craft, the yacht will be equipped with an electric motor driven by a hydrogen fuel cell.

Expression of Myoglobin in Human Cancers

Posted: 08 Jul 2009 11:00 PM PDT

Scientists report that myoglobin may protect against the stresses of tumor growth. Myoglobin plays an important role in muscle cells by both transporting oxygen and preventing cell damage by scavenging free radicals. Tumor cells often survive in hypoxic (low oxygen), high free radical environments, despite these stresses on tumor growth.

Cells Use Import Machinery To Export Their Goods As Well

Posted: 08 Jul 2009 11:00 PM PDT

Research suggests a new level of regulation for cellular export process by molecules previously assumed to be dedicated to import activities.

Mothers Of Children With Autism Have Higher Parental Stress, Psychological Distress

Posted: 08 Jul 2009 11:00 PM PDT

Mothers of children with autism had higher levels of parenting-related stress and psychological distress than mothers of children with developmental delay. Children's problem behavior was associated with increases in both parenting-related stress and distress in both groups, but this relationship was stronger in mothers of children with autism. The research also found no link between a child's decreased daily living skills and increased parental stress and psychological distress.

Erythropoietin Boosts Brainpower, Researchers Find

Posted: 08 Jul 2009 08:00 PM PDT

Healthy young mice treated with erythropoietin show lasting improved performance in learning and other higher brain functions. Researchers tested the cognitive effects of the growth factor, finding that it improved the sequential learning and memory components of a complex long-term cognitive task.

Virus-resistant Grapevines

Posted: 08 Jul 2009 08:00 PM PDT

Viruses can cost winegrowers an entire harvest. If they infest the grapevines, even pesticides are often no use. What's more, these chemicals are harmful to the environment. Researchers are growing plants that produce antibodies against the viruses and are thus immune.

Cancer Survivors At Greater Risk Of Birth Complications; Special Monitoring Needed

Posted: 08 Jul 2009 08:00 PM PDT

Survivors of childhood cancer run particular risks when pregnant and should be closely monitored, say researchers. Although such women may have conceived spontaneously and considered themselves to be perfectly healthy, their deliveries should always take place in a hospital, experts urge.

Elephant-size Loopholes Sustain Thai Ivory Trade

Posted: 08 Jul 2009 08:00 PM PDT

Legal loopholes and insufficient law enforcement mean that Thailand continues to harbor the largest illegal ivory market in Asia, says a new report.

Student Drinking: Changing Perceptions Reduces Alcohol Misuse

Posted: 08 Jul 2009 08:00 PM PDT

Giving students personalized feedback on their drinking behavior and how it compares to social norms might help to reduce alcohol misuse, according to a new eview.

New Portrait Of Omega Nebula's Glistening Watercolors

Posted: 08 Jul 2009 05:00 PM PDT

The Omega Nebula, a stellar nursery where infant stars illuminate and sculpt a vast pastel fantasy of dust and gas, is revealed in all its glory.

Study May Cough Up New Treatment For A Tickly Throat

Posted: 08 Jul 2009 05:00 PM PDT

Scientists investigating the cough reflex have discovered a new group of molecules on the surface of nerve cells that make us cough when irritated.

Making A Bigger Splash In The Gene Pool, And How Delaying Reproduction Can Help

Posted: 08 Jul 2009 05:00 PM PDT

We humans have a strong urge to reproduce, but if the environment steers us into putting off having children, we may be rewarded with both longer life and a bigger genetic footprint in future generations.

Biomarker That Safely Monitors Tumor Response To New Brain Cancer Treatment

Posted: 08 Jul 2009 05:00 PM PDT

A specific biomarker, a protein released by dying tumor cells, has been identified as an effective tool in an animal model to gauge the response to a novel gene therapy treatment for glioblastoma mulitforme.

Painstaking Search For Quotes In Television Programs Comes To An End

Posted: 08 Jul 2009 05:00 PM PDT

The journalist recalls more or less what Ulla Schmidt said regarding the health reform, but needs the exact wording to be able to cite her. A new speech recognition system helps to search TV broadcasts. It does not need to be updated and so does not entail any running costs.

Muscle Rubs: Use For Pain Is Questionable, Review Finds

Posted: 08 Jul 2009 05:00 PM PDT

There is not enough evidence to support using gels and creams containing rubefacients for chronic and acute pain, according to a systematic review. Rubefacients cause irritation and reddening of the skin, due to increased blood flow. The review focused on formulations containing salicylates, which are widely prescribed or sold over the counter as topical treatments for sports injuries and muscle pain.

Finding Fear: Neuroscientists Locate Where It Is Stored In The Brain

Posted: 08 Jul 2009 02:00 PM PDT

Neuroscientists using an imaging technique that enabled them to trace the process of neural activation in the brain have pinpointed the neurons where fear conditioning is encoded.

Human Sperm Created From Embryonic Stem Cells

Posted: 08 Jul 2009 02:00 PM PDT

Researchers have created human sperm from embryonic stem cells. The embryonic stem cells were cultured in a new medium containing vitamin A derivative (retinoic acid), using a new technique.

Genetically Engineered Mice Yield Clues To 'Knocking Out' Cancer

Posted: 08 Jul 2009 02:00 PM PDT

Researchers have demonstrated that deleting two genes in mice responsible for repairing DNA strands damaged by oxidation leads to several types of tumors, providing additional evidence that such stress contributes to the development of cancer. The work may lead to the development of new measurement methods and reference materials for accurate and reproducible assessments of DNA damage and repair.

Metabolic Factors May Play A Role In Risk For Breast Cancer

Posted: 08 Jul 2009 02:00 PM PDT

Physiological changes associated with the metabolic syndrome may play a role in the risk of postmenopausal breast cancer, according to a new study.

Immobilized Microbes Can Break Down Potentially Harmful Phthalates

Posted: 08 Jul 2009 02:00 PM PDT

Immobilized microbes can break down potentially harmful phthalates, according to researchers writing in the International Journal of Environment and Pollution. The microbes might be used to treat industrial waste water and so prevent these materials from entering the environment.

Debate Over Repressed Memories

Posted: 08 Jul 2009 02:00 PM PDT

Two years after two Harvard psychiatrists published a controversial paper on repressed memory, a Brown University political scientist is engaged in an academic dispute over that paper's integrity and its implications. At issue is how to prove whether the memories of trauma, such as childhood sexual abuse, can be repressed and then resurface later in life.

Wednesday, July 08, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Mummified Dinosaur Skin Yields Up New Secrets

Posted: 08 Jul 2009 11:00 AM PDT

Scientists have identified preserved organic molecules in the skin of a dinosaur that died around 66-million years ago.

Scientists Reprogram Clearly Defined Adult Cells Into Pluripotent Stem Cells -- Directly And Without Viruses

Posted: 08 Jul 2009 11:00 AM PDT

Researchers have succeeded for the first time in reprogramming clearly defined adult cells into pluripotent stem cells -- directly and without viruses.

Quadriplegics Can Operate Powered Wheelchair With Tongue Drive System

Posted: 08 Jul 2009 11:00 AM PDT

An assistive technology that enables individuals to maneuver a powered wheelchair or control a mouse cursor using simple tongue movements can be operated by individuals with high-level spinal cord injuries, according to the results of a recently completed clinical trial.

Dogs, Humans, Put Heads Together To Find Cure For Brain Cancer

Posted: 08 Jul 2009 11:00 AM PDT

Pinpointing the genes involved in human brain cancer can be like looking for a needle in a haystack, and sometimes the needle you find may not be the right one.

Computerized Face Recognition Software Can Rapidly See Through Disguises

Posted: 08 Jul 2009 11:00 AM PDT

A rapid but superior method for computerized face recognition could revolutionize security systems especially if it can see through disguises. New software solves the variation problems caused by different light levels and shadows, viewing direction, pose, and facial expressions. It can even see through certain types of disguises such as facial hair and glasses.

Financial Crisis Increases Suicides And Homicides, Study Finds

Posted: 08 Jul 2009 11:00 AM PDT

Market crashes could lead to rises in homicides and suicides, unless governments invest in labor market protections, according to a new study.

US-Mexico Border Wall Could Threaten Wildlife Species

Posted: 08 Jul 2009 08:00 AM PDT

A 700-mile security wall under construction along the United States' border with Mexico could significantly alter the movement and "connectivity" of wildlife, biologists say, and the animals' potential isolation is a threat to populations of some species.

Single Gene Mutation Responsible For 'Catastrophic Epilepsy'

Posted: 08 Jul 2009 08:00 AM PDT

Catastrophic epilepsy -- characterized by severe muscle spasms, persistent seizures, mental retardation and sometimes autism -- results from a mutation in a single gene, researchers report.

Fathers Spend More Time With Children Who Resemble Them, Study Suggests

Posted: 08 Jul 2009 08:00 AM PDT

Darwin's theory of evolution predicts that men will take more care of children that look like them. Scientists have now verified this prediction.

New MRI Technique Could Mean Fewer Breast Biopsies In High-risk Women

Posted: 08 Jul 2009 08:00 AM PDT

Biomedical engineers have developed a method that, applied in MRI scans of the breast, could spare some women with increased breast cancer risk the pain and stress of having to endure a biopsy of a questionable lump or lesion.

Device Makes Objects Invisible In Certain Light Conditions

Posted: 08 Jul 2009 08:00 AM PDT

Scientists have designed a device, called a dc metamaterial, which makes objects invisible under certain light – very low frequency electromagnetic waves - by making the inside of the magnetic field zero but not altering the exterior field. The device, which up to date has only been studied in theoretical works, thus acts as an invisibility cloak, making the object completely undetectable to these waves.

Post-traumatic Stress Disorder: Psychological Treatments May Not Prevent PTSD

Posted: 08 Jul 2009 08:00 AM PDT

Psychological interventions intended to prevent the development of post-traumatic stress disorder in the early stages after a traumatic experience have not been shown to be effective, researchers have concluded.

Robo-bats With Metal Muscles May Be Next Generation Of Remote Control Flyers

Posted: 08 Jul 2009 05:00 AM PDT

Tiny flying machines can be used for everything from indoor surveillance to exploring collapsed buildings, but simply making smaller versions of planes and helicopters doesn't work very well. Instead, researchers are mimicking nature's small flyers -- and developing robotic bats that offer increased maneuverability and performance.

Cholesterol-regulating Genes Identified

Posted: 08 Jul 2009 05:00 AM PDT

Scientists have come a step closer to understanding how cholesterol levels are regulated. Researchers have identified 20 genes that are involved in this process. Besides giving scientists a better idea of where to look to uncover the mechanisms that ensure cholesterol balance is maintained, the discovery could lead to new treatments for cholesterol-related diseases.

Protecting Polar Bears With New Tracking Methods

Posted: 08 Jul 2009 05:00 AM PDT

A new approach to tracking polar bears will shed more light on the potentially endangered Arctic animal and help boost the economy of Canada's north.

Gene Expression Findings A Step Toward Better Classification And Treatment Of Juvenile Arthritis

Posted: 08 Jul 2009 05:00 AM PDT

Scientists have discovered gene expression differences that could lead to better ways to classify, predict outcome, and treat juvenile idiopathic arthritis. Eventually such findings could enable doctors to target more aggressive treatment to children at risk of more severe arthritis, while those likely to have milder disease could be spared the stronger treatments that carry a greater risk of side effects.

How Strain At Grain Boundaries Suppresses High-temperature Superconductivity

Posted: 08 Jul 2009 05:00 AM PDT

Researchers have discovered that a reduction in mechanical strain at the boundaries of crystal grains can significantly improve the performance of high-temperature superconductors.

Non-drug Interventions May Comfort Children Having An Anesthetic

Posted: 08 Jul 2009 05:00 AM PDT

Parental acupuncture, clown doctors, hypnotherapy, low sensory stimulation and hand-held video games are promising non-drug interventions that are likely to help reduce children's anxiety during the onset of their anesthetic.

Scientists Closer To Developing Salt-tolerant Crops

Posted: 08 Jul 2009 02:00 AM PDT

Scientists have developed salt-tolerant plants using a new type of genetic modification, bringing salt-tolerant cereal crops a step closer to reality.

Targeting New Pancreatitis Treatments

Posted: 08 Jul 2009 02:00 AM PDT

Scientists have identified a gene that could help in targeting new treatments for alcohol-related pancreatitis.

Massive Imbalances Found In Global Fertilizer Use, Resulting In Malnourishment In Some Areas And Serious Pollution Problems In Others

Posted: 08 Jul 2009 02:00 AM PDT

A scientific study of three corn-growing regions of the world documents massive imbalances in nitrogen fertilizer use, resulting in malnourishment in some areas and serious pollution problems in others.

Ovarian Transplantation: New Technique Gives Greatly Improved Results In This Delicate Operation

Posted: 08 Jul 2009 02:00 AM PDT

Ultra-fast freezing of ovarian tissue from women who have lost their fertility as a result of cancer treatment can lead to it being used in transplants with the same success rate as fresh tissue, according to new research. Scientists said that freezing tissue by the vitrification method, which avoids ice formation, meant that oocyte (egg) viability was almost identical with that seen in fresh oocytes.

Ozone Depletes Oil Seed Rape Productivity

Posted: 08 Jul 2009 02:00 AM PDT

With rising ozone levels scientists have found that high ozone conditions cause a 30 percent decrease in yield and an increase in the concentration of a group of compounds with toxic effects to livestock, but anticarcinogenic effects for humans, within oilseed rape plants.

Different Clues To The Health Of Women And Men

Posted: 08 Jul 2009 02:00 AM PDT

Meaning and balance in everyday life are predictors of health among women. However, the most important predictor of health among men is their ability to manage the demands of their working life.

Amazon River Is 11 Million Years Old, Drilling Study Finds

Posted: 07 Jul 2009 11:00 PM PDT

The Amazon River originated as a transcontinental river around 11 million years ago and took its present shape approximately 2.4 million years ago. These are the most significant results of a study on two boreholes drilled in proximity of the mouth of the Amazon River by Petrobras, the national oil company of Brazil. Scientists used this new oceanic record to reconstruct the history of the Amazon River.

Colorectal Cancer Risk Increased By Single-base Change In The Human Genome

Posted: 07 Jul 2009 11:00 PM PDT

A single-base change in the human genome increases the risk of colorectal cancer.

People Think Bottled Water Is Healthy ... Sort Of

Posted: 07 Jul 2009 11:00 PM PDT

A small study has shown that people tend to believe that bottled water is somehow healthier than water from the tap. However, the research also shows that people are unsure exactly what these benefits might be and that they are rarely the main reason for choosing bottled.

Debate Continues On Administration Of Magnesium Sulfate To Pregnant Women To Prevent Cerebral Palsy In Pre-Term Infants

Posted: 07 Jul 2009 11:00 PM PDT

Cerebral palsy (CP) is the most prevalent chronic childhood motor disability with an estimated lifetime cost of nearly $1 million per individual. There is evidence that magnesium sulfate (MgSO4) can reduce the incidence of CP for very early preterm infants. Many thousands of pregnant women and their fetuses are exposed to MgSO4 every year in the United States for a variety of indications, and most obstetricians are comfortable with its use. Yet, there is still some controversy over whether magnesium sulfate is truly protective against CP.

Molecular Machinery Related To Stem Cell Fate Uncovered

Posted: 07 Jul 2009 11:00 PM PDT

Scientists have revealed how the BAM protein affects germline stem cell differentiation and how it is involved in regulating the quality of stem cells through intercellular competition.

Why Are African-Americans Less Likely To Survive Certain Cancers?

Posted: 07 Jul 2009 11:00 PM PDT

African-Americans are more likely than other races to die from breast, prostate and ovarian cancers, but this disparity is not due to poverty or inferior health care, a first-of-its-kind study has found.

Mystery Of Bat With Extraordinary Nose Solved

Posted: 07 Jul 2009 08:00 PM PDT

New research explains a 60-year mystery behind a rare bat's nose that is unusually large for its species. Bourret's horseshoe bat uses its elongated nose to create a highly focused sonar beam.

Component Of Vegetable Protein May Be Linked To Lower Blood Pressure

Posted: 07 Jul 2009 08:00 PM PDT

Glutamic acid, an amino acid that is abundant in vegetable protein, as a regular part of the eating pattern may be associated with lower average blood pressure. Researchers found that the higher the intake of dietary glutamic acid as a percent of total daily protein intake, the lower the blood pressure. Sources of vegetable protein include beans, whole grains and tofu.

Mangrove-dependent Animals Globally Threatened

Posted: 07 Jul 2009 08:00 PM PDT

Extinction looms for amphibians, reptiles, mammals, and birds restricted to declining mangrove forests. Substantial numbers of terrestrial vertebrates are restricted to mangrove forests. Many of these specialized species are listed as threatened by the International Union for the Conservation of Nature. Prospects for mangrove-restricted animals are bleak, because more than two percent of mangrove forests are lost each year.

Newly Appreciated Membrane Estrogen Receptor Important Therapeutic Target For Breast Cancer

Posted: 07 Jul 2009 08:00 PM PDT

New research has uncovered the biological effects of a novel membrane estrogen receptor, a finding that has potential implications for hormonal therapy for breast cancer.

Embedded Electronics: Cars Get Cooperative

Posted: 07 Jul 2009 08:00 PM PDT

Researchers have developed a groundbreaking middleware platform that could lead to thousands of new applications in a range of industries. Beginning with in-car electronics, the platform can access the functionality, but hide the underlying complexity, of embedded sensors, making development and deployment of new services a snap.

New Findings On Parkinson's Disease And Effect On Patient Behavior

Posted: 07 Jul 2009 08:00 PM PDT

A new neuropsychological memory test is helping to uncover how Parkinson's disease can alter people's ability to learn about the consequences of the choices they make.

Physicists Find Way To Control Individual Bits In Quantum Computers

Posted: 07 Jul 2009 05:00 PM PDT

Physicists have overcome a hurdle in quantum computer development, having devised a viable way to manipulate a single "bit" in a quantum processor without disturbing the information stored in its neighbors. The approach, which makes novel use of polarized light to create "effective" magnetic fields, could bring the long-sought computers a step closer to reality.

Sugar Substitute Appears To Prevent Early-childhood Cavities

Posted: 07 Jul 2009 05:00 PM PDT

Children given an oral syrup containing the naturally occurring sweetener xylitol may be less likely to develop decay in their baby teeth, according to a new article.

Chemical In Common Consumer Products (Phthalates) May Play A Role In Pre-term Births

Posted: 07 Jul 2009 05:00 PM PDT

A new study of expectant mothers suggests that a group of common environmental contaminants called phthalates, which are present in many industrial and consumer products including everyday personal care items, may contribute to the country's alarming rise in premature births.

Exercise Helps Patients With Non-alcoholic Fatty Liver Disease, Study Shows

Posted: 07 Jul 2009 05:00 PM PDT

Counseling patients with non-alcoholic fatty liver disease on how to increase physical activity leads to health benefits that are independent of changes in weight.

Nitrogen Research Shows How Some Plants Invade, Take Over Others

Posted: 07 Jul 2009 05:00 PM PDT

New research shows how plants gain nitrogen and how this allows some species to invade and take over native plants.

Regulation And Oversight Of Gun Sales Reduces Trafficking To Criminals, Study Finds

Posted: 07 Jul 2009 05:00 PM PDT

Comprehensive regulation of gun sellers appears to reduce the trafficking of guns to criminals, according to a new study. The study is the first to incorporate measures of the enforcement of gun sale laws into a study of the effectiveness of those laws.

New Monkey Discovered In Brazil -- Threatened By Proposed Dams And Other Development In Region

Posted: 07 Jul 2009 02:00 PM PDT

Biologists have discovered a new monkey in a remote region of the Amazon in Brazil. The monkey is threatened by proposed dams and other development in the region.

Magnetic Brain Stimulation Improves Skill Learning, Study Finds

Posted: 07 Jul 2009 02:00 PM PDT

The use of magnetic pulses to stimulate the dorsal premotor cortex region of the brain results in an improved ability to learn a skilled motor task, a new study finds. Researchers show that skilled movements can be stored as memories in the PMd and that magnetic stimulation of this area can facilitate this learning process.

Physics Research With Atomic Force Microscope Could Lead To Better Health Care

Posted: 07 Jul 2009 02:00 PM PDT

Study of proteins as a single molecule shows promise to help scientists understand the causes of diseases like some cancers. Research on bunched molecules could lead to a more efficient way to identify antibodies in blood.

Current Search For Heart Disease Treatment May Not Be Fruitful

Posted: 07 Jul 2009 02:00 PM PDT

A protein used by doctors to indicate a patient's risk of coronary heart disease may have drug developers barking up the wrong treatment tree, according a new study. Their research suggests that C-reactive protein, an enticing target for scientists working on new treatments for coronary heart disease, may not have a role in causing the disease, even though it is a predictive marker.

DIY Production In 'Second Life' Factory

Posted: 07 Jul 2009 02:00 PM PDT

Anyone who wants to can now produce their own vehicle in a factory on the "Second Life" Internet platform. They can program the industrial robots, and transport and assemble the individual parts themselves. Learning platforms provide relevant background information.

When It Comes To Brain Damage, Blankets Take The Place Of Drugs

Posted: 07 Jul 2009 02:00 PM PDT

Have you ever covered yourself with a blanket to stave off the shivers? A new study shows that a blanket can also help alleviate shivering in patients who have been cooled to prevent brain damage.

Tuesday, July 07, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Physical Reality Of String Theory Shown In Quantum-critical State Of Electrons

Posted: 07 Jul 2009 11:00 AM PDT

String theory has come under fire in recent years. Promises have been made that have not been lived up to. Theoretical physicists have now for the first time used string theory to describe a physical phenomenon -- the quantum-critical state of electrons leading to high-temperature superconductivity.

Alzheimer's Research Pinpoints Antibodies That May Prevent Disease

Posted: 07 Jul 2009 11:00 AM PDT

Antibodies to a wide range of substances that can aggregate to form plaques, such as those found in Alzheimer's patients, have been identified in the blood and cerebrospinal fluid of healthy people. Levels of these antibodies decline with age and, in Alzheimer's patients, with increasing progression of the disease.

Close Relationship Between Past Warming And Sea-level Rise

Posted: 07 Jul 2009 11:00 AM PDT

Scientists have reconstructed sea-level fluctuations over the last 520,000 years. Comparison of this record with data on global climate and CO2 levels from Antarctic ice cores suggests that even stabilization at today's carbon dioxide levels may commit us to much greater sea-level rise over the next couple of millennia than previously thought.

Trio Of Signals Converge To Induce Liver And Pancreas Cell Development In The Embryo

Posted: 07 Jul 2009 11:00 AM PDT

Understanding the molecular signals that guide early cells in the embryo to develop into different organs provides insight into ways that tissues regenerate and how stem cells can be used for new therapies. Researchers have investigated a trio of cell-signaling pathways that work simultaneously, converging to direct pancreas and liver progenitor cells to mature into their final state.

Social Security Numbers Can Be Predicted With Public Information

Posted: 07 Jul 2009 11:00 AM PDT

Researchers have shown that public information readily gleaned from governmental sources, commercial data bases, or online social networks can be used to routinely predict most -- and sometimes all -- of an individual's nine-digit Social Security number.

Health Food Supplement May Curb Compulsive Hair Pulling

Posted: 07 Jul 2009 11:00 AM PDT

Researchers have discovered that a common antioxidant, widely available as a health food supplement, may help stop the urges of those with trichotillomania, a disorder characterized by compulsive hair-pulling.

Prostate Cancer 'Homing Device' Created For Drug Delivery

Posted: 07 Jul 2009 08:00 AM PDT

A new prostate cancer "homing device" could improve detection and allow for the first targeted treatment of the disease. Researchers have synthesized a molecule that finds and penetrates prostate cancer cells and has created imaging agents and therapeutic drugs that can link to the molecule and be carried with it as cargo.

Brain's Immune System May Cause Chronic Seizures

Posted: 07 Jul 2009 08:00 AM PDT

Chronic seizures caused by traumatic head injuries may result from chemicals released by the brain's immune system attempting to repair the injured site, according to a new study.

Underground Cave Dating From The Year 1 A.D. Exposed In Jordan Valley

Posted: 07 Jul 2009 08:00 AM PDT

An artificial underground cave, the largest in Israel, has been exposed in the Jordan Valley in the course of a new survey. Archeologists reckon that this cave was originally a large quarry during the Roman and Byzantine era. Various engravings were uncovered in the cave, including cross markings, and it is assumed that this could have been an early monastery.

Inhaled Growth Hormone Safe For Children Deficient In This Key Protein, Study Suggests

Posted: 07 Jul 2009 08:00 AM PDT

Endocrinologists have found that inhaled growth hormone is well tolerated by children with growth hormone deficiency and that this easy-to-use method can safely deliver GH to the blood stream. This first pediatric study of administering GH through the lungs may also help researchers interested in using this convenient method for effectively delivering other types of medications to children.

Bioengineers Develop Microfabricated Device To Measure Cellular Forces During Tissue Development

Posted: 07 Jul 2009 08:00 AM PDT

Scientists studying the physical forces generated by cells has created a tiny micron--sized device that measures and manipulates cellular forces as assemblies of living cells reorganize themselves into tissues.

Team Sports Participation Reduces Likelihood Of Youths Becoming Established Smokers; Smoking In Movies Increases Risk

Posted: 07 Jul 2009 08:00 AM PDT

Participating in team sports is associated with a reduced likelihood of youths becoming established smokers, according to a new report. However, exposure to movie smoking appears to be associated with an increased risk of established smoking in both team sport participants and nonparticipants.

Dozens Of Newly Discovered Pulsars Probed By NASA's Fermi Gamma-ray Space Telescope

Posted: 07 Jul 2009 05:00 AM PDT

With NASA's Fermi Gamma-ray Space Telescope, astronomers now are getting their best look at those whirling stellar cinders known as pulsars. Astronomers have analyzed gamma-rays from two dozen pulsars, including 16 discovered by Fermi.

Carbohydrate Acts As Tumor Suppressor

Posted: 07 Jul 2009 05:00 AM PDT

Scientists have discovered that specialized complex sugar molecules that anchor cells into place act as tumor suppressors in breast and prostate cancers.

Why Some Tumors Don't Respond To Radiation And Chemotherapy

Posted: 07 Jul 2009 05:00 AM PDT

A tightly controlled system of checks and balances ensures that a powerful tumor suppressor called p53 keeps a tight lid on unchecked cell growth but doesn't wreak havoc in healthy cells. Scientists now show just how finely tuned the system is and how little it takes to tip the balance.

Enzyme That Makes Survival Molecule For Key Vision Cells Identified

Posted: 07 Jul 2009 05:00 AM PDT

New research identifies an enzyme that makes neuroprotectin D1 which specifically and selectively protects retinal cells key for vision.

How Can The World's Fisheries Be Sustainable?

Posted: 07 Jul 2009 05:00 AM PDT

A new study provides the first global evaluation of how management practices influence fisheries' sustainability.

Pregnancy Needn't Mean Hard Labor: Laboring Without The Labor Bed Cuts Need For Artificial Oxcytocin To Advance Slow Labors

Posted: 07 Jul 2009 05:00 AM PDT

A new study that re-conceptualized the hospital labor room by removing the standard, clinical bed and adding relaxation-promoting equipment had a 28 per cent drop in infusions of artificial oxcytocin, a powerful drug used to advance slow labors.

New Evidence That Vinegar May Be Natural Fat-fighter

Posted: 07 Jul 2009 02:00 AM PDT

Researchers are reporting new evidence that the ordinary vinegar -- a staple in oil-and-vinegar salad dressings, pickles, and other foods -- may live up to its age-old reputation in folk medicine as a health promoter. They are reporting new evidence that vinegar can help prevent accumulation of body fat and weight gain. 

Understanding The Anticancer Effects Of Vitamin D3

Posted: 07 Jul 2009 02:00 AM PDT

The active form of vitamin D3 seems to have anticancer effects. New research has identified a major mechanism underlying these effects. Specifically, the protein cystatin D, which is induced by the active form of vitamin D3, has tumor suppressor activity that accounts for much of the anticancer effect of the active form of vitamin D3.

Largest Carnivorous Dinosaur Tooth Ever Found In Spain

Posted: 07 Jul 2009 02:00 AM PDT

Researchers have compared an Allosauroidea tooth found in deposits in Riodeva, Teruel, with other similar samples. The palaeontologists have concluded that this is the largest tooth of a carnivorous dinosaur to have been found to date in Spain.

'Nature' And 'Nurture' Variables Early Predictors Of Age-related Macular Degeneration

Posted: 07 Jul 2009 02:00 AM PDT

Like many diseases, causes for age-related macular degeneration can be categorized as either "nature" or "nurture". Researchers think these factors, when used in the proper model, can be strong predictors of the disease. AMD is the leading cause of vision loss in Americans 60 years of age and older.

Multiple Means Of Identifying Species Better Than DNA Barcoding Alone

Posted: 07 Jul 2009 02:00 AM PDT

DNA barcoding is advocated as a vast improvement in our ability to monitor and manage the world's biodiversity. An expert on the potato and tomato family examined the utility of DNA barcoding in a complex plant group, Solanum section Petota, using three of the most frequently suggested genome sections. His findings emphasize the importance of using multiple means of identifying species, and he cautions against using barcoding alone as a means of species identification.

Delirium Presentation Predicts Mortality, Study Finds

Posted: 07 Jul 2009 02:00 AM PDT

The way certain patients present in the post-acute hospital setting with delirium, a common, preventable but life-threatening acute confusional state, predicts mortality, according to a new study. Patients with severe, hypoactive delirium, characterized by slowing or lack of movement and unresponsiveness, have the worst six-month survival rate of any class of the disease. Those with mild, hypoactive delirium have a significantly higher likelihood of dying than patients with other, milder symptoms.

Ferns Took To The Trees And Thrived During Cretaceous Period

Posted: 06 Jul 2009 11:00 PM PDT

As flowering plants like giant trees quickly rose to dominate plant communities during the Cretaceous period, the ferns that had preceded them hardly saw it as a disappointment.

Muscle Damage May Be Present In Some Patients Taking Statins

Posted: 06 Jul 2009 11:00 PM PDT

Structural muscle damage may be present in patients who have statin-associated muscle complaints, found a new study.

Athletes, Spectators Faced Unprecedented Air Pollution At 2008 Olympic Games

Posted: 06 Jul 2009 11:00 PM PDT

Particulate air pollution during the 2008 Olympic Games in Beijing constantly exceeded levels considered excessive by the World Health Organization, was far worse than other recent Olympic Games, and was about 30 percent higher than has been reported by Chinese environmental experts -- even though some favorable weather conditions helped reduce the problem.

Cancer Researchers Link DICER1 Gene Mutation To Rare Childhood Cancer

Posted: 06 Jul 2009 11:00 PM PDT

New research demonstrates the first definitive link between mutations in the gene DICER1 and cancer. By studying the patterns of DNA from 11 families with an unusual predisposition to the rare childhood lung cancer pleuropulmonary blastoma investigators found that children with the cancer carried a mutation in one of their two DICER1 gene copies.

Engineers Research Effects Of Heat Expansion On Economically Efficient Bridge Design

Posted: 06 Jul 2009 11:00 PM PDT

Researchers are studying the effects of integral bridge expansion resulting from heat to make integral bridges a more viable alternative.

Students With Depression Twice As Likely To Drop Out Of College

Posted: 06 Jul 2009 11:00 PM PDT

College students with depression are twice as likely as their classmates to drop out of school, new research shows.

Songbirds Reveal How Practice Improves Performance

Posted: 06 Jul 2009 08:00 PM PDT

Learning complex skills like playing an instrument requires a sequence of movements that can take years to master. Last year, neuroscientists reported that by studying the chirps of tiny songbirds, they were able to identify how two distinct brain circuits contribute to this type of trial-and-error learning in different stages of life.

Intestinal Cells Surprisingly Active In Pursuit Of Nutrition And Defense

Posted: 06 Jul 2009 08:00 PM PDT

Every cell lining the small intestine bristles with thousands of tightly packed microvilli that project into the gut lumen, forming a brush border that absorbs nutrients and protects the body from intestinal bacteria. A study now shows that microvilli extend their functional reach even further using a molecular motor to send vesicles packed with gut enzymes out into the lumen to get a head start on breaking down their substrates.

New Mass Spectrometric Method Allows Fast And Comprehensive Analyses Of Metabolites

Posted: 06 Jul 2009 08:00 PM PDT

Researchers have developed a new method to quickly and reliably detect metabolites, such as sugars, fatty acids, amino acids and other organic substances from plant or animal tissue samples. One drop of blood -- less than one micro liter -- is sufficient to identify certain blood related metabolites.

How To Confirm The Causes Of Iron Deficiency Anemia In Young Women

Posted: 06 Jul 2009 08:00 PM PDT

A research group from Italy showed that a pre-endoscopic serological screening for Helicobacter pylori and celiac disease may help to confirm the causes of iron deficiency anemia in young women. This screening permits the identification of patients at higher risk of iron malbsorption related disease such as Helicobacter pylori-related gastritis and celiac disease and to select patients to submit for gastroscopy.

Single Protein Dimers Observed Wavering Between Two Symmetrically Opposed Structures

Posted: 06 Jul 2009 08:00 PM PDT

Researchers have used a very sensitive fluorescence technique to find that a bacterial protein thought to exist in one "natural" three-dimensional structure (shape), can actually twist itself into a second form, depending on the protein's chemical environment. One folded form is active and the other is inactive, but the protein can easily morph from one state to another.

Babies Born After Freeze-thawing Embryos Do Just As Well Regardless Of Whether They Were Created Via ICSI Or Standard IVF

Posted: 06 Jul 2009 08:00 PM PDT

Analysis of the longest running ICSI program in the United States has found reassuring evidence that babies born from frozen embryos fertilized via ICSI (intracytoplasmic sperm injection) do just as well as those born from frozen embryos fertilized via standard IVF treatment.

Battle Of The Sexes Benefits Offspring, Says Research In Birds

Posted: 06 Jul 2009 05:00 PM PDT

Parents compensate for a lazy partner by working harder to bring up their offspring, but not enough to completely make up for the lack of parenting, says research by bird biologists.

Variations In Five Genes Raise Risk For Most Common Brain Tumors

Posted: 06 Jul 2009 05:00 PM PDT

Common genetic variations spread across five genes raise a person's risk of developing the most frequent type of brain tumor, scientists report.

Ancient Drought And Rapid Cooling Drastically Altered Climate

Posted: 06 Jul 2009 05:00 PM PDT

Two abrupt and drastic climate events, 700 years apart and more than 45 centuries ago, are teasing scientists who are now trying to use ancient records to predict future world climate. The events -- one, a massive, long-lived drought believed to have dried large portions of Africa and Asia, and the other, a rapid cooling that accelerated the growth of tropical glaciers -- left signals in ice cores and other geologic records from around the world.

Vitamin A Derivative Provides Clues To Better Breast Cancer Drugs

Posted: 06 Jul 2009 05:00 PM PDT

A comparison of the effects of estrogen and retinoic acid, a derivative of vitamin A, on the genome of breast cancer cells showed that they have a "yin-yang" effect, with estrogen tipping the scales towards cell proliferation and retinoic acid inhibiting cellular growth. The finding could lead researchers to a new set of drug targets for this disease.

Natural Deep Earth Pump Fuels Earthquakes And Ore

Posted: 06 Jul 2009 05:00 PM PDT

For the first time scientists have discovered the presence of a natural deep earth pump that is a crucial element in the formation of ore deposits and earthquakes.

Sick Children Do Not Always Have Their Pain-relief Needs Met

Posted: 06 Jul 2009 05:00 PM PDT

Despite great effort to reduce anxiety, fear and pain, related to health care, children still considered "being in pain" as the worst aspect of a medical procedure, according to new research.

Fireworks Display In The Helix Nebula

Posted: 06 Jul 2009 02:00 PM PDT

The Helix Nebula, NGC 7293, is not only one of the most interesting and beautiful planetary nebulae; it is also one of the closest nebulae to Earth, at a distance of only 710 light years away. A new image, taken with an infrared camera on the Subaru Telescope in Hawaii, shows tens of thousands of previously unseen comet-shaped knots inside the nebula. The sheer number of knots -- more than have ever been seen before -- looks like a massive fireworks display in space.

Nitrates May Be Environmental Trigger For Alzheimer’s, Diabetes And Parkinson's Disease

Posted: 06 Jul 2009 02:00 PM PDT

A new study has found a substantial link between increased levels of nitrates in our environment and food with increased deaths from diseases, including Alzheimer's, diabetes mellitus and Parkinson's.

To Protect Threatened Bat Species, Street Lights Out

Posted: 06 Jul 2009 02:00 PM PDT

Slow-flying, woodland bats -- which tend to be at greater risk from extinction than their speedier kin -- really don't like street lights, according to a new study. Lesser horseshoe bats will stray from their usual flight routes to steer clear of the artificial glow from lights that are similar to everyday street lights, the new report shows.

Urine Test For Appendicitis To Indicate Which Children Need Surgery?

Posted: 06 Jul 2009 02:00 PM PDT

Appendicitis is the most common childhood surgical emergency, but can be hard to diagnose, often leading to either unnecessary surgery or serious complications when the condition is missed. Now, emergency physicians and proteomics researchers have identified a urine protein that might serve as a "biomarker" for appendicitis, the most accurate one known to date.

Genome-wide Map Shows Precisely Where MicroRNAs Do Their Work

Posted: 06 Jul 2009 02:00 PM PDT

MicroRNAs are the newest kid on the genetic block. By regulating the unzipping of genetic information, these tiny molecules have set the scientific world alight with such wide-ranging applications as onions that can't make you cry and therapeutic potential for new treatments for viral infections, cancer and degenerative diseases. But the question remains: How do they work?

Being Overweight Or Obese In Mid-life Linked To Increased Risk Of Reduced Memory And Thinking Skills In Late Life

Posted: 06 Jul 2009 02:00 PM PDT

Individuals with higher mid-life Body Mass Index (BMI) in the 1960s have been found to have lower memory and thinking skills and a sharper decline in these abilities in old age, compared to those with lower BMI in mid-life.

Monday, July 06, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Caffeine Reverses Memory Impairment In Mice With Alzheimer's Symptoms

Posted: 06 Jul 2009 11:00 AM PDT

Coffee drinkers may have another reason to pour that extra cup. When aged mice bred to develop symptoms of Alzheimer's disease were given caffeine -- the equivalent of five cups of coffee a day -- their memory impairment was reversed, report researchers.

Immune System Linked To Schizophrenia

Posted: 06 Jul 2009 11:00 AM PDT

Researchers have, for the first time, identified additional genes that confirm what scientists have long suspected -- that the immune system may play a role in the development of schizophrenia. Further, they have also identified genetic anomalies that disrupt the cellular pathways involved in brain development, memory and cognition, all markers of schizophrenia.

Potential New Drugs: 970 Million And Still Counting

Posted: 06 Jul 2009 11:00 AM PDT

Like astronomers counting stars in the familiar universe of outer space, chemists in Switzerland are reporting the latest results of a survey of chemical space -- the so-called chemical universe where tomorrow's miracle drugs may reside. The scientists conclude, based on this phase of the ongoing count, that there are 970 million chemicals suitable for study as new drugs.

Controversial Cancer Stem Cells Offer New Direction For Treatment

Posted: 06 Jul 2009 11:00 AM PDT

Researchers sort out the controversy and promise around a dangerous subtype of cancer cells, known as cancer stem cells, which seem capable of resisting many modern treatments.

Many Antarctic Species Ill Prepared To Cope With Warmer Ocean

Posted: 06 Jul 2009 11:00 AM PDT

Researchers subjected species found in Antarctic waters to increasing levels of water temperature to learn how well they would cope with a warmer ocean. The study shows that several of these species are already living really close to their upper temperature range, and that further increases could easily provoke serious ecological imbalances in this region.

Women More Accurate At Hammering A Nail Than Men In Good Light

Posted: 06 Jul 2009 11:00 AM PDT

Scientists are studying hammering ability as a model for difficult motor tasks. The results indicate that there is a surprising difference in performance between the sexes, and that this difference is dependent in turn on the hammering conditions.

Super-size Deposits Of Frozen Carbon In Arctic Could Worsen Climate Change

Posted: 06 Jul 2009 08:00 AM PDT

The vast amount of carbon stored in the Arctic and boreal regions of the world is more than double that previously estimated, according to a new study. The new estimate is over 1.5 trillion tons of frozen carbon, about twice as much carbon as contained in the atmosphere.

Vitamin D Deficiency Is Widespread And On The Increase

Posted: 06 Jul 2009 08:00 AM PDT

A new report shows that populations across the globe are suffering from the impact of low levels of vitamin D. The problem is widespread and on the increase, with potentially severe repercussions for overall health and fracture rates.

Melons Sweetened With DNA Sequence

Posted: 06 Jul 2009 08:00 AM PDT

People smell them, thump them and eyeball their shape. But ultimately, it's sweetness and a sense of healthy eating that lands a melon in a shopper's cart. Plant breeders now have a better chance to pinpoint such traits for new varieties, because the melon genome with hundreds of DNA markers has now been mapped. That means tastier and healthier melons are likely for future summer picnics.

Varying Reductions In Breast Cancer Suggest Hormone Therapy To Blame

Posted: 06 Jul 2009 08:00 AM PDT

The recent decline in invasive breast cancer in the US was significantly less pronounced in the poor and those who live in rural areas. Researchers suggest this may be due to varying reductions in the numbers of women taking hormone therapy.

Ancient Supervolcano's Eruption Caused Decade Of Severe Winters

Posted: 06 Jul 2009 08:00 AM PDT

Previous studies have suggested that Indonesia's Toba supervolcano, when it erupted about 74,000 years ago, triggered a 1,000-year episode of ice sheet advance, and also may have produced a short-lived "volcanic winter," which drastically reduced the human population at the time. Researchers have now found that none of the models to simulate the supervolcanic eruption initiate glaciation.

Dangerous Liaisons: Bacterial 'Sex' Causes Antibiotic Resistance

Posted: 06 Jul 2009 08:00 AM PDT

Some disease-causing bacteria are becoming resistant to antibiotics because they have peculiar sex lives, say researchers publishing new results in the journal Science. The new study helps scientists understand how bacteria develop resistance to antibiotics, which is a major challenge for those treating infectious diseases.

Scientists Develop Echolocation In Humans To Aid The Blind

Posted: 06 Jul 2009 05:00 AM PDT

Scientists have shown that human beings can develop echolocation, the system of acoustic signals used by dolphins and bats to explore their surroundings. Producing certain kinds of tongue clicks helps people to identify objects around them without needing to see them, something which would be especially useful for the blind.

MicroRNAs Hold Promise For Treating Diseases In Blood Vessels

Posted: 06 Jul 2009 05:00 AM PDT

A newly discovered mechanism controls whether muscle cells in blood vessels hasten the development of both atherosclerosis and Alzheimer's disease, according to a new article.

Ultrasensitive Detector Promises Improved Treatment Of Viral Respiratory Infections

Posted: 06 Jul 2009 05:00 AM PDT

Chemists and biomedical engineers have developed a respiratory virus detector that is sensitive enough to detect an infection at an early stage, takes only a few minutes to return a result and is simple enough to be performed in a pediatrician's office.

New Mechanism For Amyloid Beta Protein's Toxic Impact On The Alzheimer's Brain

Posted: 06 Jul 2009 05:00 AM PDT

Scientists have uncovered a novel mechanism linking soluble amyloid b protein with the synaptic injury and memory loss associated with Alzheimer's disease (AD). The research provides critical new insight into disease pathogenesis and reveals signaling molecules that may serve as potential additional therapeutic targets for AD.

Integrated Optical Trap Holds Particles For On-chip Analysis

Posted: 06 Jul 2009 05:00 AM PDT

A new type of optical particle trap can be used to manipulate bacteria, viruses and other particles on a chip as part of an integrated optofluidic platform.

Composer Richard Wagner's 'Difficult' Reputation Unwarranted, Says Research

Posted: 06 Jul 2009 05:00 AM PDT

The composer Richard Wagner is well-known, even notorious, for writing operas that can challenge both performers and listeners. A new study reveals that Wagner set his text to music in a way that uses the acoustics of the soprano voice in a manner that helps both performers and listeners.

Paralyzed People Using Computers, Amputees Controlling Bionic Limbs, With Microelectrodes On (Not In) Brain

Posted: 06 Jul 2009 02:00 AM PDT

Experimental devices that read brain signals have helped paralyzed people use computers and may let amputees control bionic limbs. But existing devices use tiny electrodes that poke into the brain. A new study shows that brain signals controlling arm movements can be detected accurately using new microelectrodes that sit on the brain but don't penetrate it.

Large-scale Analysis Finds Bariatric Surgery Relatively Safe

Posted: 06 Jul 2009 02:00 AM PDT

Advances in weight-loss surgery have made it as safe as any routine surgical procedure, according to a researcher who reviewed data from nearly 60,000 patients, and found it resulted in low complication and mortality rates.

Once-a-month Pill For Both Fleas And Ticks In Dogs And Cats

Posted: 06 Jul 2009 02:00 AM PDT

Scientists are describing discovery and successful tests of the first once-a-month pill for controlling both fleas and ticks in domestic dogs and cats. 

Rotator Cuff Treatment Provides Immediate Tendonitis Relief

Posted: 06 Jul 2009 02:00 AM PDT

A minimally invasive procedure to treat tendinitis in the rotator cuff of the shoulder provides immediate symptom relief to the patient, according to a new study. The study found that ultrasound-guided nonsurgical therapy significantly reduces pain from calcific tendinitis of the rotator cuff, and restores lasting mobility after treatment.

International Space Hotel Envisioned

Posted: 06 Jul 2009 02:00 AM PDT

Plans for a new international space hotel students have been unveiled by students this month as part of a project for their Masters degree. Students had to grapple with the challenges of designing that could function in a zero gravity environment.

Psychotherapy Of Depression Changes Biological Parameters?

Posted: 06 Jul 2009 02:00 AM PDT

Investigators have demonstrated that the early increase in phosphorylated CREB (pCREB) is related to treatment response and does not depend on pharmacological interventions or brain-derived neurotrophic factor (BDNF) plasma levels. For the first time, cellular biological markers could be associated with response to psychotherapy.

Disappearing Seagrass Threatening Future Of Coastal Ecosystems Globally

Posted: 05 Jul 2009 11:00 PM PDT

An international team of scientists warns that accelerating losses of seagrasses across the globe threaten the immediate health and long-term sustainability of coastal ecosystems. The team has compiled and analyzed the first comprehensive global assessment of seagrass observations and found that 58 percent of world's seagrass meadows are currently declining.

DNA Variations Linked To Brain Tumors

Posted: 05 Jul 2009 11:00 PM PDT

Scientists have found a connection between DNA alterations on human chromosome 9 and aggressive brain cancer known as glioblastoma.

Hand-held Aerosol Sensors Help Fill Crucial Data Gap Over Oceans

Posted: 05 Jul 2009 11:00 PM PDT

Since NASA researchers began assembling the Aerosol Robotic Network in the 1990s, the worldwide network of ground-based aerosol sensors has grown to 400 sites across seven continents. The trouble is that two-thirds of the planet is covered by ocean. And aerosols -- the tiny atmospheric particles that can have an outsized impact on the climate -- are just as likely to be found in the air above the oceans as they are over land.

New Control System Of The Body Discovered

Posted: 05 Jul 2009 11:00 PM PDT

Researchers have ameliorated inflammation of the brain in mice caused by immune cells. A receptor they discovered on T cells in the CNS plays the key role. They showed that this bradykinin receptor 1 controls the infiltration of immune cells into the CNS. When they activated B1 in mice with encephalitis, the inflammation markedly decreased. This may unveil a new target for the treatment of diseases such as multiple sclerosis.

World's Largest Aerosol Sensing Network Has Leafy Origins

Posted: 05 Jul 2009 11:00 PM PDT

From his office at NASA's Goddard Space Flight Center in Greenbelt, Md., Brent Holben helps manage the world's largest network of ground-based sensors for aerosols -- tiny specks of solids and liquids that waft about in the atmosphere. These particles come from both human and natural sources, and can be observed everywhere in the world.

Learning More About The Placebo Effect

Posted: 05 Jul 2009 11:00 PM PDT

In a recent trial, a sample of alcohol-dependent patients received naltrexone, acamprosate or placebo for 12 weeks. While there were no differences in outcomes between treatment groups, those who believed they had been taking active medication consumed fewer alcoholic drinks and reported less alcohol dependence and cravings. That is, irrespective of actual treatment, perceived medication allocation predicted health outcomes.

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ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Researchers Unveil Whiskered Robot Rat

Posted: 05 Jul 2009 08:00 PM PDT

Scientists have developed an innovative robot rat which can seek out and identify objects using its whiskers. The SCRATCHbot robot will be demonstrated at an international workshop looking at how robots can help us examine the workings of the brain.

Clocking Salt Levels In The Blood: Link Between The Circadian Rhythm And Salt Balance

Posted: 05 Jul 2009 08:00 PM PDT

New research suggests a link between the circadian rhythm and control of sodium (salt) levels in the blood of mice. Specifically, the circadian clock protein Period 1 was found to function downstream of the hormone aldosterone (a known controller of blood sodium levels and thereby blood pressure) to regulate levels of the alpha-subunit of the epithelial sodium channel in the mouse kidney.

Castor-oil Plants Genetically Altered To Produce New Bio-lubricants

Posted: 05 Jul 2009 08:00 PM PDT

Researchers have genetically altered castor-oil plant so as to use it as a factory to produce bio lubricants.

No Evidence That WHO-recommended Treatment For Insecticide Poisoning Improves Survival

Posted: 05 Jul 2009 08:00 PM PDT

A new study finds no evidence to suggest that a controversial antidote recommended by the World Health Organization (WHO) to treat patients poisoned with highly toxic insecticides improves their chance of survival. The results may even add weight to existing concerns about pralidoxime, the treatment recommended by the WHO, by suggesting that it could be harmful in patients who have deliberately poisoned themselves with insecticides.

First Wave Of Swine Flu Hit Young People Harder Than Expected

Posted: 05 Jul 2009 08:00 PM PDT

A mathematical epidemiologist is researching the A(H1N1) influenza pandemic strain circulating around the world. The new study's findings reveal an age shift in the proportion of cases toward a younger population when compared with historical patterns of seasonal influenza in Mexico. "For the 1918 ("Spanish flu") influenza pandemic, this was the pattern -- first a mild wave, and then a severe one with higher case fatality rates," notes one of the researchers.

Does Study Design Influence Clinical Outcome?

Posted: 05 Jul 2009 08:00 PM PDT

Response and remission rates to antidepressants are significantly affected by study type and duration. Clinicians and researchers must consider the study design when interpreting and designing RCTs of antidepressant medications, researchers urge.

World's First 'Self-Watering' Plant: Desert Rhubarb

Posted: 05 Jul 2009 02:00 PM PDT

Researchers have managed to make out the "self-irrigating" mechanism of the desert rhubarb, which enables it to harvest 16 times the amount of water than otherwise expected for a plant in this region based on the quantities of rain in the desert. This is the first example of a self-irrigating plant worldwide.

Secrets Revealed About How Disease-causing DNA Mutations Occur

Posted: 05 Jul 2009 02:00 PM PDT

Scientists have shed light on the processes that lead to certain human DNA mutations that are implicated in hundreds of inherited diseases. The results one day could influence the way couples who seek to have children receive genetic counseling.

A Young Brain For An Old Bee

Posted: 05 Jul 2009 02:00 PM PDT

Scientists have found that by switching the social role of honey bees, aging honey bees can keep their learning ability intact or even improve it. The research team is hoping to use them as a model to study general aging processes in the brain and how to prevent or ameliorate cognitive impairments associated with old age.

Accelerated Fertility Treatment Leads To Shortened Time To Pregnancy And Cost Savings

Posted: 05 Jul 2009 02:00 PM PDT

For couples beginning infertility treatments, an accelerated path to in-vitro fertilization can offer a shorter time to pregnancy, cost savings of nearly $10,000, and a lowered risk of multiple births.

Desert Dust Alters Ecology Of Colorado Alpine Meadows

Posted: 05 Jul 2009 02:00 PM PDT

Accelerated snowmelt -- precipitated by desert dust blowing into the mountains -- changes how alpine plants respond to seasonal climate cues that regulate their life cycles, according to a new study. These results indicate that global warming may have a greater influence on plants' annual growth cycles than previously thought.

Discovery May Provide New Treatments For Alcohol Dependence

Posted: 05 Jul 2009 02:00 PM PDT

Researchers have discovered a new brain mechanism involved in alcohol addiction involving the stomach hormone ghrelin. When ghrelin's actions in the brain are blocked, alcohol's effects on the reward system are reduced. It is an important discovery that could lead to new therapies for addictions such as alcohol dependence.

Inexpensive Thin Printable Batteries Developed

Posted: 05 Jul 2009 08:00 AM PDT

For a long time, batteries were bulky and heavy. Now, a new cutting-edge battery is revolutionizing the field. It is thinner than a millimeter, lighter than a gram, and can be produced cost-effectively through a printing process.

Researchers Discover New Information On Spreading Of Cancer

Posted: 05 Jul 2009 08:00 AM PDT

Researchers have discovered a mechanism lung cancer cells use when spreading into the body to form metastases. They have also found a factor controlling the spreading of several different cancer types. The common feature in both findings is that they explain the lethal ability of cancer cells to "start running" and spread from the original tumor to other parts of the body.

Innovative Technology Shatters The Barriers Of Modern Light Microscopy

Posted: 05 Jul 2009 08:00 AM PDT

Researchers are using a combination of light and ultrasound to visualize fluorescent proteins that are seated several centimeters deep into living tissue.

New Way To Fix Leaking Mitral Heart Valves Safe In Initial Testing, Study Shows

Posted: 05 Jul 2009 08:00 AM PDT

A novel method to seal leaking heart valves was shown to be safe in its first use in heart failure patients. If effective in larger trials, the PTMA system could significantly reduce the life-threatening risks associated with surgical repair of the mitral valve.

Fast Neutral Hydrogen Detected Coming From The Moon

Posted: 05 Jul 2009 08:00 AM PDT

NASA's Interstellar Boundary Explorer (IBEX) spacecraft has made the first observations of very fast hydrogen atoms coming from the moon, following decades of speculation and searching for their existence.

Zooming In To Catch The Bad Guys: New 'Perfection Tool' From Researchers In Israel Enhances Video To Catch Criminals And Terrorists

Posted: 05 Jul 2009 08:00 AM PDT

It's a frequent scene in television crime dramas: Clever police technicians zoom in on a security camera video to read a license plate or capture the face of a hold-up artist. But in real life, enhancing this low-quality video to focus in on important clues hasn't been an easy task. Until now. Researchers in Israel have developed a new video "perfection tool" to help investigators enhance raw video images and identify suspects.

Late Blight -- Irish Potato Famine Fungus -- Attacks U.S. Northeast Gardens And Farms Hard

Posted: 05 Jul 2009 02:00 AM PDT

Home gardeners beware: This year, late blight -- a destructive infectious disease that caused the Irish potato famine in the 1840s -- is killing tomato and potato plants in gardens and on commercial farms in the eastern United States. In addition, basil downy mildew is affecting plants in the Northeast.

Researchers Describe The 90-year Evolution Of Swine Flu

Posted: 05 Jul 2009 02:00 AM PDT

The current H1N1 swine flu strain has genetic roots in an illness that sickened pigs at the 1918 Cedar Rapids Swine Show in Iowa, report experts. Their paper describes H1N1's nearly century-long and often convoluted journey, which may include the accidental resurrection of an extinct strain.

Tubules 'Grown' From Droplets

Posted: 05 Jul 2009 02:00 AM PDT

Since the discovery of carbon nanotubes in the early 1990s, nanotubes and nanowires have been the focus of scientific and technological interest. It has since also proved possible to produce these tiny structures from materials other than carbon. Possible applications range across many areas, including microelectronic circuits, sensor technology, and special fibre optics and light-emitting nanotubes for displays.

Gene Map Aims To Combat Blood Flukes

Posted: 05 Jul 2009 02:00 AM PDT

The first microsatellite-based genetic linkage map has been published for Schistosoma mansoni, a blood fluke that is known to infect over 90 million people in Africa, the Middle East and the New World. Researchers hope the map will stimulate research and open doors to new advances in combating this neglected human pathogen.

White Phosphorous Can Be Safely Handled And Transported With New Technique, Researchers Say

Posted: 05 Jul 2009 02:00 AM PDT

Researchers have discovered a technique to safely handle and transport white phosphorous.

Mom’s Weight During Pregnancy Affects Her Daughter’s Risk Of Being Obese

Posted: 05 Jul 2009 02:00 AM PDT

A mother's weight and the amount she gains during pregnancy both impact her daughter's risk of obesity decades later, according to a new study.

Saturday, July 04, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Coolest Spacecraft Ever In Orbit (-273 Degrees Celsius)

Posted: 04 Jul 2009 02:00 PM PDT

On July 2 the detectors of Planck's High Frequency Instrument reached their amazingly low operational temperature of -273°C, making them the coldest known objects in space. The spacecraft has also just entered its final orbit around the second Lagrange point of the Sun-Earth system, L2.

'Jumping Gene' Diminishes The Effect Of New Type 2 Diabetes Risk Gene

Posted: 04 Jul 2009 02:00 PM PDT

Research has identified a new gene associated with diabetes, together with a mechanism that makes obese mice less susceptible to diabetes. A genomic fragment that occurs naturally in some mouse strains diminishes the activity of the risk gene Zfp69. The researchers also found that the corresponding human gene (ZNF642) is especially active in overweight individuals with diabetes.

Cancer-causing Protein Can Also Help Fight The Tumors It Causes

Posted: 04 Jul 2009 02:00 PM PDT

New research uses the Ras protein to fight its own malign effects.

Bypass Surgery Has Long-term Benefits For Children With Kawasaki Disease, Study Suggests

Posted: 04 Jul 2009 02:00 PM PDT

Coronary artery bypass surgery provides "excellent" long-term survival for children who have severe inflammatory heart and blood vessel damage caused by Kawasaki disease. While post-operative problems may increase over time, these can be managed with proper follow-up care. Most of the young patients have normal lives, including participation in sports.

'A Touch Of Glass' In Metal, Settles Century-old Question

Posted: 04 Jul 2009 02:00 PM PDT

Scientists have found evidence of an important similarity between the behavior of polycrystalline materials -- like metals and ceramics -- and glasses, research that could lead to better predictions of how many valuable materials behave under stress.

Rush Of Blood To The Head: Anger Increases Blood Flow

Posted: 04 Jul 2009 02:00 PM PDT

Mental stress causes carotid artery dilation and increases brain blood flow. A series of ultrasound experiments also found that this dilatory reflex was absent in people with high blood pressure.

Super-energetic Bursts Discovered Near Giant Black Hole

Posted: 04 Jul 2009 08:00 AM PDT

Combining gamma-ray telescopes with the supersharp radio 'vision' of the Very Long Baseline Array showed astronomers the location from which very-high-energy gamma rays are emerging from the core ot the giant galaxy M87.

Existing Parkinson's Disease Drug May Fight Drug-resistant TB

Posted: 04 Jul 2009 08:00 AM PDT

Existing drugs used in the treatment of Parkinson's disease could be repositioned for use in the treatment of extreme drug-resistant tuberculosis, which kills about 2 million people each year, according to a new study. The rise of these strains of TB throughout the world, including industrialized countries, poses a great threat to human health.

Novel Light-sensitive Compounds Show Promise For Cancer Therapy

Posted: 04 Jul 2009 08:00 AM PDT

Chemists have developed novel compounds that show promise for photodynamic cancer therapy, which uses light-activated drugs to kill tumor cells. The new compounds, called dye-sensitized ruthenium nitrosyls, are absorbed by cancer cells and respond to specific wavelengths of light by releasing nitric oxide, which triggers cell death.

Patients With Lower Urinary Tract Symptoms More Likely To Suffer From Metabolic Syndrome

Posted: 04 Jul 2009 08:00 AM PDT

Researchers have determined that individuals with mild to severe symptoms of lower urinary tract symptoms (LUTS) are more likely to suffer from metabolic syndrome, a collection of cardiovascular risk factors thought to be linked by insulin resistance). LUTS encompass voiding (incomplete emptying, weak stream, intermittency, straining) and storage (frequency, urgency, nocturia) difficulties.

First Detailed Look At Progress Of A Wildland-urban Fire

Posted: 04 Jul 2009 08:00 AM PDT

To better understand increasingly prevelant Wildland-Urban Interface (WUI) fires -- and how best to prevent or fight them -- researchers have issued an in-depth case study on fire behavior and defensive actions taken in a community during a major WUI fire in California.

Hormone Treatment Eases Post-surgery Distress In Children

Posted: 04 Jul 2009 08:00 AM PDT

Physicians focused on reducing anxiety in children and their families report that oral treatment with melatonin before surgery can significantly reduce the occurrence of emergence delirium in children.

Climate Change And The Mystery Of The Shrinking Sheep

Posted: 04 Jul 2009 02:00 AM PDT

Milder winters are causing Scotland's wild breed of Soay sheep to get smaller, despite the evolutionary benefits of possessing a large body, according to new research.

New Treatment For Receding Gums: No Pain, Lots Of Gain

Posted: 04 Jul 2009 02:00 AM PDT

Dental researchers have demonstrated three-year success with a tissue regeneration application that reduces the pain and recovery time of gum grafting surgery. This specific treatment eliminates the need to take tissue from the roof of the mouth.

HIV-related Death: Predicting Fatal Fungal Infections

Posted: 04 Jul 2009 02:00 AM PDT

Researchers have identified cells in blood that predict which HIV-positive individuals are most likely to develop deadly fungal meningitis, a major cause of HIV-related death. This form of meningitis affects more than 900,000 HIV-infected people globally--most of them in sub-Saharan Africa and other areas of the world where antiretroviral therapy for HIV is not available.

Immunology: Interleukin-21 Keeps Defense Cells In Good Trim

Posted: 04 Jul 2009 02:00 AM PDT

Interleukin-21 plays a crucial role in fighting off chronic viral infections, scientists recently concluded. The discovery offers hope for specific treatments against HIV, hepatitis C and B, and tumors.

Shape Matters In The Case Of Cobalt Nanoparticles

Posted: 04 Jul 2009 02:00 AM PDT

New studies show that changing the shape of cobalt nanoparticles from spherical to cubic can fundamentally change their behavior.

Children With Autism Need To Be Taught In Smaller Groups, Experts Argue

Posted: 04 Jul 2009 02:00 AM PDT

Since the 1970s, there has been much debate surrounding the fact that individuals with autism have difficulty in understanding speech in situations where there is background speech or noise. Neuroscientists argue in favor of smaller class sizes for children with autism.

Triggering Muscle Development: A Therapeutic Cure For Muscle Wastage?

Posted: 03 Jul 2009 08:00 PM PDT

Scientists have shown that if elderly men who were given growth hormone and exercised their legs showed an appreciable muscle mass increase. Researchers say, "This raises the question: Can age-related loss of muscle strength and increased fragility be ameliorated by the therapeutic application of mechano growth factor?"

Police Work Undermines Cardiovascular Health, Comparison To General Population Shows

Posted: 03 Jul 2009 08:00 PM PDT

It is well documented that police officers have a higher risk of developing heart disease: The question is why. In the most recent results coming out of one of the few long-term studies being conducted within this tightly knit society, researchers have determined that underlying the higher incidence of subclinical atherosclerosis -- arterial thickening that precedes a heart attack or stroke -- may be the stress of police work.

Risk Of Liver Cancer In Women With Hepatitis B Virus Infection Varies With Number Of Pregnancies

Posted: 03 Jul 2009 08:00 PM PDT

Risk for hepatocellular carcinoma, a primary malignancy of the liver, was statistically significantly higher among women with hepatitis B virus (HBV) infection than among women without the virus, according to a new study.

Methane-producing Molecule Can Also Repair DNA

Posted: 03 Jul 2009 08:00 PM PDT

The Archaea are single-celled organisms and a domain unto themselves, quite apart from the so called eukaryotes (bacteria and higher organisms). Many species live under extreme conditions, and carry out unique biochemical processes shared neither with bacteria nor with eukaryotes. Methanogenic archaeans, for example, can produce methane gas out of carbon dioxide and hydrogen.

Overweight Kids Experience More Loneliness, Anxiety

Posted: 03 Jul 2009 08:00 PM PDT

As childhood obesity rates continue to increase, experts agree that more information is needed about the implications of being overweight as a step toward reversing current trends. A new study has found that overweight children, especially girls, show signs of the negative consequences of being overweight as early as kindergarten.

Human-like Brain Disturbances In Insects: Locusts Shed Light On Migraines, Stroke And Epilepsy

Posted: 03 Jul 2009 05:00 PM PDT

A similarity in brain disturbance between insects and people suffering from migraines, stroke and epilepsy points the way toward new drug therapies to address these conditions.

What Drives Lung Cancer's Spread?

Posted: 03 Jul 2009 05:00 PM PDT

A new study reveals the genetic underpinnings of what causes lung cancer to quickly metastasize, or spread, to the brain and the bone -- the two most prominent sites of lung cancer relapse.

Alzheimer's Research Yields Potential Drug Target

Posted: 03 Jul 2009 05:00 PM PDT

Scientists have found laboratory evidence that a cluster of peptides may be the toxic agent in Alzheimer's disease. Scientists say the discovery may lead to new drugs for the disease.

Predicting The Return Of Prostate Cancer: New Study Betters The Odds Of Success

Posted: 03 Jul 2009 05:00 PM PDT

Cancer experts say a study tracking 774 prostate cancer patients for a median of eight years has shown that a three-way combination of measurements has the best chance yet of predicting disease metastasis.

Computer Scientists Develop Model For Studying Arrangements Of Tissue Networks By Cell Division

Posted: 03 Jul 2009 05:00 PM PDT

Computer scientists have developed a framework for studying the arrangement of tissue networks created by cell division across a diverse set of organisms, including fruit flies, tadpoles and plants.

Hurricane Katrina: Why Some People Stayed Behind

Posted: 03 Jul 2009 05:00 PM PDT

Hurricane Katrina was the largest natural disaster in US history, claiming the lives of more than 1,800 victims and causing well over $100 billion in damage along the Gulf Coast. The 2005 storm breached every levee in New Orleans, flooding almost the entire city as well as the neighboring parishes. Yet a surprising number of people stayed behind and rode out the storm.

Brain Malformations Significantly Associated With Preterm Birth, Study Suggests

Posted: 03 Jul 2009 02:00 PM PDT

New research provides for the first time a solid scientific answer for the long-standing question of whether there is an association between preterm birth and brain malformations.

Nanotechnology May Increase Longevity Of Dental Fillings

Posted: 03 Jul 2009 02:00 PM PDT

Tooth-colored fillings may be more attractive than silver ones, but the bonds between the white filling and the tooth quickly age and degrade. Researchers hope a new nanotechnology technique will extend the fillings' longevity.

Prostate Cancer Patients Disease Free After Five Years Likely To Be Disease Free After 10 Years

Posted: 03 Jul 2009 02:00 PM PDT

Prostate cancer patients who receive brachytherapy and remain free of disease for five years or greater are unlikely to have a recurrence at 10 years, according to a new study.

New Material Made From Paper Sludge Could Replace Plastic Packaging

Posted: 03 Jul 2009 02:00 PM PDT

Scientists have developed a new material by applying a biotechnological treatment to paper sludge. In many cases, the new material could replace plastic packaging and certain building materials.

Experts Call For Federal Regulation Of Genetic Ancestry Testing

Posted: 03 Jul 2009 02:00 PM PDT

The need for a clear set of rules governing genetic ancestry testing is becoming more urgent, according to experts, given the proliferation of private corporations that promise consumers insight into their genetic origins.

Optical Computer Closer: Optical Transistor Made From Single Molecule

Posted: 03 Jul 2009 11:00 AM PDT

Researchers have successfully created an optical transistor from a single molecule. This has brought them one step closer to an optical computer.

Triple Fossil Find Puts Australia Back On The Dinosaur Map

Posted: 03 Jul 2009 08:00 AM PDT

Scientists have discovered three new species of Australian dinosaur discovered in a prehistoric billabong in Western Queensland: two giant, herbivorous sauropods and one carnivorous theropod.