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112,160 articles from PhysOrg

• WEDNESDAY 9. MARCH, 2011
• 23:24 Kansas' population growth not all positive, sociologist says

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  Kansas will continue to see an increasingly aging population, rural-area population loss and diversity in highly concentrated areas, according to a Kansas State University population expert.  

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• 23:24 Kayak simplifies airfare shopping

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  One of the primary applications of the internet is its ability to find just about anything. But unless you know exactly where to look, chances are you use some kind of search engine to do the locating for you. Google, for example, is one of the most popular search engines out there. It's uncanny how the thing for which you are looking is usually somewhere within the first page of hits. In fact, more often than not it's usually within the first five on that first page.  

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• 23:24 Kinect for Xbox - the story behind the science

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  Have you ever wondered about the story behind one of the most exciting computer gaming inventions of late? If so you’re in luck, because Jamie Shotton, one of the developers of Kinect for Xbox, will be telling the story behind it at Cambridge Science Festival later this month.  

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• 23:24 Mars' missing carbon dioxide may be buried

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  (PhysOrg.com) -- Rocks on Mars dug from far underground by crater-blasting impacts are providing glimpses of one possible way Mars' atmosphere has become much less dense than it used to be.  

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• 23:24 More support needed for women to beat menopause 'taboo' in the workplace

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  Working through the menopause presents a major challenge for millions of women as they struggle to deal with symptoms, according to new research.  

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• 23:24 New study shows some sharks follow 'mental map' to navigate seas

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  A new study led by a University of Florida researcher uses tracking data of three shark species to provide the first evidence some of the fish swim directly to targeted locations.  

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• 23:24 Preemie birth preventive spikes from $10 to $1,500

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  (AP) -- The price of preventing preterm labor is about to go through the roof.  

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• 23:24 Researchers develop synthetic compound that may lead to drugs to fight pancreatic, lung cancer

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  Researchers at UT Southwestern Medical Center have identified a chemical compound that may eventually lead to a drug that fights cancers that are dependent on a particular anti-viral enzyme for growth.  

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• 23:24 Sales of Microsoft's Kinect top 10 million

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  Microsoft said Wednesday that sales of the gesture-sensing Kinect for the Xbox 360 videogame console had topped 10 million units, making it the fastest-selling consumer electronics device ever.  

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• 23:24 Sensitive to oxygen: Phosphorescent iridium(III) porphyrin complexes, new tunable oxygen indicators

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  (PhysOrg.com) -- Monitoring the amount of oxygen in living tissues accurately is a valuable tool in biomedical science, because it enables the elucidation of the course of metabolic processes or the detection of diseases or anomalies. Metal complexes that absorb and emit light are useful as sensors, and metal complexes of porphyrins and their derivatives are especially good candidates for such applications, as the porphyrin macrocycle can easily be modified.  

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• 23:24 The impact of plate tectonics

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  Helping to settle a debate over plate tectonics that has divided geologists for decades, scientists at Harvard University have moved a step closer to understanding the complex physical deformation of one of the most densely populated earthquake zones on Earth: the Tibetan Plateau.  

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• 23:24 Using stem cells to regrow muscle, bone

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  Among the most debilitating of diseases are degenerative ones, in which a person’s health slowly declines over time. And some of the worst of these diseases involve the deterioration of muscle or bone.  

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• 23:24 Vast areas of low latitude subsurface ice found on Mars

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  There could be more subsurface ice on Mars than previously thought, and vast stretches of it may lie just south of the equator. Indeed, one of the proposed landing sites for the Mars Science Laboratory could hold the mother lode of enticing scientific prospects. Observations from two spacecraft, the Mars Reconnaissance Orbiter and Mars Express, have revealed potential subsurface ice deposits in areas just south of the equator, including one near Holden Crater, with an estimated reservoir of perennial subsurface water ice of about 50 – 500 kg m-2 just two or three meters beneath the surface. This is the first evidence of ice at “tropical” latitudes on Mars as low as 25 degrees.  

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• 23:24 What factors motivate smokers to quit?

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  This week people across the country will vow to give up something for Lent, and those items could include sweets, chocolate or cigarettes.  

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• 23:24 Report: International collaboration between researchers results in greater recognition

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  U.S. researchers who collaborate with international scientists are more likely to have their work cited than peers who do not utilize overseas expertise, according to a new study released this week by Rice University's Baker Institute for Public Policy. U.S. collaborators with international scientists are also more likely to receive greater recognition and produce work with greater impact.  

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• 21:24 A-ha! The neural mechanisms of insight

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  Although it is quite common for a brief, unique experience to become part of our long-term memory, the underlying brain mechanisms associated with this type of learning are not well understood. Now, a new brain-imaging study looks at the neural activity associated with a specific type of rapid learning, insight. The research, published by Cell Press in the March 10 issue of the journal Neuron, reveals specific brain activity that occurs during an "A-ha!" moment that may help encode the new information in long-term memory.  

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• 21:24 An advance toward blood transfusions that require no typing

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  Scientists are reporting an "important step" toward development of a universal blood product that would eliminate the need to "type" blood to match donor and recipient before transfusions. A report on the "immunocamouflage" technique, which hides blood cells from antibodies that could trigger a potentially fatal immune reaction that occurs when blood types do not match, appears in the ACS journal, Biomacromolecules.  

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• 21:24 Banana peels get a second life as water purifier

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  To the surprisingly inventive uses for banana peels — which include polishing silverware, leather shoes, and the leaves of house plants — scientists have added purification of drinking water contaminated with potentially toxic metals. Their report, which concludes that minced banana peel performs better than an array of other purification materials, appears in ACS's journal Industrial & Engineering Chemistry Research.  

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• 21:24 Climate researchers: Russian heat wave was natural

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  (AP) -- Global warming isn't directly to blame for last summer's deadly - and extraordinary - heat wave in Russia, researchers said in a report Wednesday that came with a climate warning.  

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• 21:24 How do people respond to being touched by a robot? (w/ Video)

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  For people, being touched can initiate many different reactions from comfort to discomfort, from intimacy to aggression. But how might people react if they were touched by a robot? Would they recoil, or would they take it in stride? In an initial study, researchers at the Georgia Institute of Technology found people generally had a positive response toward being touched by a robotic nurse, but that their perception of the robot's intent made a significant difference. The research is being presented today at the Human-Robot Interaction conference in Lausanne, Switzerland.  

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• 21:24 International panel revises 'McDonald Criteria' for diagnosing multiple sclerosis

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  International Panel Revises "McDonald Criteria" for Diagnosing MS -- Use of new data should speed diagnosis -- Publication coincides with MS Awareness Week  

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• 21:24 Messenger to enter mercury orbit

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  On March 17, the MESSENGER spacecraft will execute a 15-minute maneuver that will place it into orbit about Mercury, making it the first craft ever to do so, and initiating a one-year science campaign to understand the innermost planet.  

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• 21:24 Nanodiamonds take big step toward battling cancer

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  Chemotherapy drug resistance contributes to treatment failure in more than 90 percent of metastatic cancers. Overcoming this hurdle would significantly improve cancer survival rates.  

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• 21:24 New genetic deafness syndrome identified

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  Ten years ago, scientists seeking to understand how a certain type of feature on a cell called an L-type calcium channel worked created a knockout mouse missing both copies of the CACNA1D gene.  

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• 21:24 New microscope decodes complex eye circuitry (w/ Video)

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  The sensory cells in the retina of the mammalian eye convert light stimuli into electrical signals and transmit them via downstream interneurons to the retinal ganglion cells which, in turn, forward them to the brain. The interneurons are connected to each other in such a way that the individual ganglion cells receive visual information from a circular area of the visual field known as the receptive field. Some ganglion cells are only activated, for example, when light falls on the centre of their receptive fields and the edge remains dark (ON cells). The opposite is the case for other ganglion cells (OFF cells). And there are also ganglion cells that are activated by light that sweeps across their receptive fields in a particular direction; motion in the opposite (null-) direction inhibits activation.  

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