Saturday, September 05, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Do High-fat Diets Make Us Stupid And Lazy? Physical And Memory Abilities Of Rats Affected After 9 Days

Posted: 05 Sep 2009 02:00 PM PDT

Rats fed a high-fat diet show a stark reduction in their physical endurance and a decline in their cognitive ability after just nine days, new research shows.

Molecular 'GPS' Helps Researchers Probe Processes Important In Aging And Disease

Posted: 05 Sep 2009 02:00 PM PDT

Scientists are reporting the development of a powerful new probe for identifying proteins affected by a key chemical process important in aging and disease. The probe works like a GPS or navigation system for finding these proteins in cells. It could lead to new insights into disease processes and identify new targets for disease treatments, the researchers say.

Two New Antibodies Found To Cripple HIV: 'Achilles' Heel On Virus For AIDS Vaccine Researchers To Exploit

Posted: 05 Sep 2009 02:00 PM PDT

Researchers have discovered two powerful new antibodies to HIV that reveal what may be an Achilles heel on the virus. Researchers will now try to exploit the newfound vulnerability on the virus to craft novel approaches to designing an AIDS vaccine. Moreover, the global collaboration and process that led to the discovery of the two new broadly neutralizing antibodies (bNAbs) are likely to produce more such antibodies, which may in turn reveal additional vulnerabilities of HIV, adding still more vitality to the effort to develop a vaccine against AIDS.

Inflammatory Disease Treatments To Improve Through Use Of Lipidomics

Posted: 05 Sep 2009 02:00 PM PDT

According to the National Center for Chronic Disease Prevention and Health Promotion, 46 million Americans have arthritis. Many of these people take over-the-counter anti-inflammatory medications that block production of certain molecules, known as bioactive lipids, to reduce pain and swelling. Yet, the role of these lipids is not yet understood completely, and medications may have adverse side effects. Recently, researchers completed the first comprehensive analysis of bioactive lipids in an inflammatory response.

Atoms Don't Dance The 'Bose Nova': Realization Of An Excited, Strongly Correlated Many-body Phase

Posted: 05 Sep 2009 02:00 PM PDT

An Austrian research group has investigated how ultracold quantum gases behave in lower spatial dimensions. They successfully realized an exotic state, where, due to the laws of quantum mechanics, atoms align along a one-dimensional structure. A stable many-body phase with new quantum mechanical states is thereby produced even though the atoms are usually strongly attracted which would cause the system to collapse.

Designing Cars For Expectant Mothers

Posted: 05 Sep 2009 02:00 PM PDT

Researchers have developed a new computer model that can be used as a design tool for automotive designers to help ensure that vehicle designs can accommodate the safety needs of pregnant occupants.

Next-door Cosmic Encounter: Neighboring Galaxies Collided 2-3 Billion Years Ago

Posted: 05 Sep 2009 08:00 AM PDT

An international team of astronomers has uncovered evidence of a nearby cosmic encounter. Their study indicates that the Andromeda and Triangulum galaxies, the two galaxies closest to our own, collided about two to three billion years ago.

Large Thighs Protect Against Heart Disease And Early Death

Posted: 05 Sep 2009 08:00 AM PDT

Men and women whose thighs are less than 60cm in circumference have a higher risk of premature death and heart disease, according to new research. The study also concluded that individuals whose thighs are wider than 60cm have no added protective effect.

New Graphene-based, Nano-material Has Magnetic Properties

Posted: 05 Sep 2009 08:00 AM PDT

Researchers have designed a new graphite-based, magnetic nano-material that acts as a semiconductor and could help material scientists create the next generation of electronic devices like microchips.

Patients' Pretreatment Quality Of Life Can Predict Overall Lung Cancer Survival

Posted: 05 Sep 2009 08:00 AM PDT

Research has found that an individual's quality of life prior to treatment can help predict the overall survival of patients with advanced stage non-small cell lung cancer.

Weeds That Reinvented Weediness: New Research Sheds Light On Origins And Success Of Flowering Plants

Posted: 05 Sep 2009 08:00 AM PDT

Flowering plants are all around us and are phenomenally successful. But how did they get to be so successful and where did they come from? This question bothered Darwin and others, and now a new reveals that their ability to adapt anatomically may be the answer.

New Study Compares After-hours And Daytime Surgery Success Rates

Posted: 05 Sep 2009 08:00 AM PDT

Patients who have after-hour orthopaedic surgeries risk a slightly higher rate of necessary follow-up surgeries, according to a new study.

Early Warning Signals Of Change: 'Tipping Points' Identified Where Sudden Shifts To New Conditions Occur

Posted: 05 Sep 2009 02:00 AM PDT

What do abrupt changes in ocean circulation and Earth's climate, shifts in wildlife populations and ecosystems, the global finance market and its system-wide crashes, and asthma attacks and epileptic seizures have in common? According to new research, all share generic early-warning signals that indicate a critical threshold of change dead ahead.

New Treatment In Sight For Ovarian Cancer

Posted: 05 Sep 2009 02:00 AM PDT

In the future, women with metastatic ovarian cancer could be treated with a radioactive substance that can seek and destroy tumor cells. An initial study in patients in Sweden has found that the treatment has no unwanted side-effects.

Researcher Uses 100,000 Degree Heat To Study Plasma, What Happens To Matter Around Black Holes

Posted: 05 Sep 2009 02:00 AM PDT

A researcher is studying ultra-high temperature and non-equilibrium plasmas to mimic what happens to matter in accretion disks around black holes. The work will enable astrophysicists to better understand what happens around black holes and in active galactic nuclei. Scientists will also better understand the application of high-energy density plasmas to energy production, such as controlled nuclear fusion (produced in the laboratory), and production of X-ray sources for a variety of applications.

People With Type 2 Diabetes Not Meeting Important Nutritional Recommendations

Posted: 05 Sep 2009 02:00 AM PDT

People with type 2 diabetes are not consuming sufficiently healthy diets and could benefit from ongoing nutritional education and counseling, according to a new study.

Species Diversity Helps Researchers Refine Analyses Of Human Gene Mutations

Posted: 05 Sep 2009 02:00 AM PDT

Researchers examining DNA mutations from both healthy and diseased patients are evaluating the reliability of computer models aimed at predicting the eventual effect of such mutations.

How Can Clinicians Help Patients Make Decisions Consistent With Their Values?

Posted: 05 Sep 2009 02:00 AM PDT

In a pair of trials carried out over the Internet, researchers attempted to understand how information should best be presented to individuals in order to help them make health care choices that are most consistent with their values.

Human Brain Could Be Replicated In 10 Years, Researcher Predicts

Posted: 04 Sep 2009 05:00 PM PDT

A model that replicates the functions of the human brain is feasible in 10 years according to neuroscientist Professor Henry Markram of the Brain Mind Institute in Switzerland. "I absolutely believe it is technically and biologically possible. The only uncertainty is financial. It is an extremely expensive project and not all is yet secured."

New Switch That Causes The Body To Produce Cancerous Cells Discovered

Posted: 04 Sep 2009 05:00 PM PDT

Researchers have discovered a second molecular switch within the Mixed Lineage Leukemia protein complex that they believe could be exploited to prevent the overproduction of abnormal cells that are found in several types of cancer, including leukemia.

Ultra-flat Loudspeakers With Powerful Sound Reproduction

Posted: 04 Sep 2009 05:00 PM PDT

Bigger speakers, bigger sound – this is the music lover's creed. Flat panel loudspeakers offer an alternative to those who would rather not or cannot clutter up their homes with speakers. These speakers can be integrated inconspicuously on walls or in furniture. Scientists in Germany are now demonstrating a completely new concept for ultra-flat loudspeakers that still deliver full sound reproduction.

Gene Called Flower Missing Link In Vesicle Uptake In Neurons

Posted: 04 Sep 2009 05:00 PM PDT

As part of synaptic transmission from one neuron to the next, bubbles containing neurotransmitters that make information exchange possible, travel to the tip of neurons, where they fuse with the cell's membrane. The extra membrane is captured in a process called endocytosis and recycled to enable the next cycle. Exocytosis must be tightly coupled with endocytosis to sustain rapid neurotransmission, researchers report.

Scientists Cool Gas By Laser Bombardment

Posted: 04 Sep 2009 05:00 PM PDT

Three decades ago, American and Finnish scientists came up with a very powerful method for cooling gases by "laser bombardment." Now physicists in Germany have demonstrated that it actually works. Fast cooling by laser bombardment could possibly be used for the construction of new mini fridges.

Organic Or Local Fruits and Vegetables?

Posted: 04 Sep 2009 05:00 PM PDT

The emerging trend toward healthier, fresher foods presents new dilemmas for conscientious consumers. Marketers tout the attributes of "organic" food, while the "local foods movement" is gaining popularity throughout the world. The "organic-or-local" debate is particularly interesting when it comes to fruits and vegetables; but do consumers really understand the difference between "organic" and "local" produce? And what price are we willing to pay for these fresh, premium products?

Mice Can Eat 'Junk' And Not Get Fat: Researchers Find Gene That Protects High-fat-diet Mice From Obesity

Posted: 04 Sep 2009 02:00 PM PDT

Researchers have identified a gene that acts as a master switch to control obesity in mice. When the switch is turned off, even high-fat-diet mice remain thin.

HPV Vaccine Could Prevent Some Forms Of Breast Cancer, Australian Research Suggests

Posted: 04 Sep 2009 02:00 PM PDT

Vaccinating women against the human papillomavirus may prevent some forms of breast cancer and save tens of thousands of lives each year, new Australian research suggests.

Growing Green Roofs

Posted: 04 Sep 2009 02:00 PM PDT

One way to maximize the eco-friendly factor of a structure is to include a green roof. "Greening" a roof, or covering a roof with vegetation, is gaining popularity in North America, where the number of green roofs increased 30 percent from 2006 to 2007. Benefits of green roofs include improved storm water management, energy conservation, reduced noise and air pollution, improved biodiversity and even a better return on investment than traditional roofing.

Inhibition Of Key Inflammatory Protein, Reduced Radiation Toxicity In Zebrafish

Posted: 04 Sep 2009 02:00 PM PDT

Directly inhibiting the activity of a key protein mediator of inflammation reduced radiation toxicity in zebrafish embryos, and may ultimately be of help to patients receiving radiation therapy, according to researchers.

Web Page Ranking Algorithm Detects Critical Species In Ecosystems

Posted: 04 Sep 2009 02:00 PM PDT

Google's algorithm for ranking web-pages can be used to determine which species are critical for sustaining ecosystems. Now researchers find that "PageRank" can be applied to the study of food webs, the complex networks describing who eats whom in an ecosystem.

Was The Public Health Response To Swine Flu Alarmist?

Posted: 04 Sep 2009 02:00 PM PDT

The public health measures taken in response to swine flu may be seen as alarmist, overly restrictive, or even unjustified, says one U.S. expert who argues that our plans for pandemics need to take into account more than the worst case scenarios, and calls for a new framework for thinking about epidemic disease.

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