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112,160 articles from PhysOrg

• MONDAY 11. JANUARY, 2010
• 23:00 Disconnect Between Brain Regions in ADHD

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  (PhysOrg.com) -- Two brain areas fail to connect when children with attention deficit hyperactivity disorder attempt a task that measures attention, according to researchers at the UC Davis Center for Mind and Brain and M.I.N.D. Institute.  

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• 23:00 Ex-top NASA official charged in Mississippi

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  (AP) -- A former high-ranking NASA official is being indicted on charges he steered a $600,000 contract to Mississippi State University.  

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• 23:00 Raft or bridge: How did iguanas reach tiny Pacific islands?

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  Scientists have long puzzled over how iguanas, a group of lizards mostly found in the Americas, came to inhabit the isolated Pacific islands of Fiji and Tonga. For years, the leading explanation has been that progenitors of the island species must have rafted there, riding across the Pacific on a mat of vegetation or floating debris. But new research in the January issue of The American Naturalist suggests a more grounded explanation.  

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• 23:00 Reducing dosage of Parkinson's drugs can cause symptoms similar to those of cocaine withdrawal

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  New research has shown that reducing the dosage of dopamine agonist (DA) drugs, a mainstay treatment for Parkinson's disease (PD), sometimes causes acute withdrawal symptoms similar to those reported by cocaine addicts -- including anxiety, panic attacks, depression, sweating, nausea, generalized pain, fatigue, dizziness and drug cravings. These symptoms can be severe, and are not alleviated by other PD medications.  

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• 23:00 Study quantifies minority enrollment losses if affirmative action is eliminated

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  (PhysOrg.com) -- A nationwide ban on affirmative action in college admissions would cause a 10 percent drop in black and Hispanic enrollment at the nation`s most selective colleges and universities, according to a new study. Overall black and Hispanic representation in four-year institutions would decline by two percent, the study found.  

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• 23:00 The secrets of the Sahara revealed

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  "When I first arrived in the Sahara, I was struck by how utterly barren it was, like the color green was removed from the palette when they made this place, just nothing, grays and browns, and not a scrap of life," Jennifer Smith says at the beginning of a History TV channel documentary on the Sahara.  

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• 23:00 Top 10 Sci-Tech Stories Of The Decade

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  Discoveries, devices, and developments that have changed the way we view our world over the past ten years.  

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• 21:56 Argonne gets wind of new energy models

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  (PhysOrg.com) -- Sailors and golfers aren't the only people interested in knowing how much the wind blows; people who run wind farms need to know too.  

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• 21:56 Blocking nuclear receptor may cut off tumor blood supply

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  A new method of blocking the genesis of blood vessels that feed tumors may start with the nuclear receptor COUP-TFII (chicken ovalbumin upstream promoter-transcription factor II), said a pair of Baylor College of Medicine researchers who have studied the factor for more than 20 years.  

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• 21:56 Can we trust the results of research done on children?

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  Can we trust the results of research done on children?  

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• 21:56 Climate conditions in 2050 crucial to avoid harmful impacts in 2100

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  While governments around the world continue to explore strategies for reducing greenhouse gas emissions, a new study suggests policymakers should focus on what needs to be achieved in the next 40 years in order to keep long-term options viable for avoiding dangerous levels of warming.  

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• 21:56 Discovery provides new drug targets for malaria cure

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  Researchers are a step closer to developing new antimalarial drugs after discovering the normal function of a set of proteins related to the malaria parasite protein, which causes resistance to the front-line drug chloroquine. The findings also provide a novel tool for studying the malarial chloroquine-resistance factor.  

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• 21:56 Genetic variant associated with aggressive form of prostate cancer

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  Researchers at Wake Forest University Baptist Medical Center and colleagues have identified the first genetic variant associated with aggressive prostate cancer, proving the concept that genetic information may one day be used in combination with other factors to guide treatment decisions.  

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• 21:56 Got cognitive activity? It does a mind good

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  If you don't have a college degree, you're at greater risk of developing memory problems or even Alzheimer's. Education plays a key role in lifelong memory performance and risk for dementia, and it's well documented that those with a college degree possess a cognitive advantage over their less educated counterparts in middle and old age. Now, a large national study from Brandeis University published in the American Journal of Geriatric Psychiatry shows that those with less schooling can significantly compensate for poorer education by frequently engaging in mental exercises such as word games, puzzles, reading, and lectures.  

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• 21:56 Highlight: Quasi-Crystalline Order at Nanoscale

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  Nanoparticles have a strong tendency to form periodic structures. Mixing and matching of two different types of nanoparticles allows the formation of binary nanoparticle superlattices isostructural to ionic or intermetallic compounds. In addition to periodic superlattices, binary mixtures of nearly spherical nanoparticles could lead to the growth of quasi-crystals.  

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• 21:56 Less than six hours sleep a night more dangerous for premenopausal women

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  (PhysOrg.com) -- Getting less than six hours sleep a night is more dangerous for younger women who have not yet been through the menopause, according to researchers at the University of Warwick.  

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• 21:56 Microbe understudies await their turn in the limelight

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  On the marine microbial stage, there appears to be a vast, varied group of understudies only too ready to step in when "star" microbes falter.  

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• 21:56 Researchers trace HIV mutations that lead to drug resistance

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  Chemists at UC San Diego and statisticians at Harvard University have developed a novel way to trace mutations in HIV that lead to drug resistance. Their findings, once expanded to the full range of drugs available to treat the infection, would allow doctors to tailor drug cocktails to the particular strains of the virus found in individual patients.  

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• 21:56 Study shows that delivering stem cells improves repair of major bone injuries in rats

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  A study published this week reinforces the potential value of stem cells in repairing major injuries involving the loss of bone structure.  

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• 20:51 Dead Sea-dwelling microbes reveal roots of protein common to all higher life forms

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  (PhysOrg.com) -- We have more in common with Dead Sea-dwelling microbes than previously thought. University of Florida researchers have found that one of the most common proteins in complex life forms may have evolved from proteins found in microbes that live in deadly salty environments.  

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• 20:51 Friendship may help stem rise of obesity in children, study finds

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  Parents are acutely aware of the influence of friends on their children's behavior -- how they dress, how they wear their hair, whether they drink or smoke.  

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• 20:51 New Procedure Allows Diagnosis, Treatment of Small Intestine without Surgery (w/ Video)

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  (PhysOrg.com) -- Physicians at UMC have started using a new technology to view and treat diseases of the small intestine previously inaccessible without major surgery.  

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• 20:51 Oceans losing ability to absorb greenhouse gas

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  (PhysOrg.com) -- Like a dirty filter, the Earth's oceans are growing less efficient at absorbing vast amounts of carbon dioxide, the major greenhouse gas produced by fossil-fuel burning, reports a study co-authored by Francois Primeau, UC Irvine Earth system science associate professor.  

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• 20:51 Still safely at sea, Edzani now a tropical storm

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  The weekend wasn't very helpful to Edzani, once a powerful Cyclone, now weakened to a tropical storm in the Southern Indian Ocean. That's because of cooler waters and increased wind shear.  

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• 20:51 Study: Second cochlear implant can restore two important facets of binaural hearing

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  (PhysOrg.com) -- Cochlear implants are electronic devices that stimulate auditory nerves directly, bypassing damage in the inner ear, and thus restoring some hearing. Although cochlear implants have revolutionized the treatment of deafness, many users have trouble understanding speech, particularly in crowds.  

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