ScienceDaily: Latest Science News |
| Posted: 05 May 2009 11:00 AM PDT Scientists have determined the structure of chlorophyll molecules in green bacteria, which are super-efficient at harvesting light energy. Because the interactions that lead to the assembly of the chlorophyll molecules are rather simple, so they provide good models for designing artificial systems. The research one day could be used to build artificial photosynthetic systems, such as those that convert solar energy to electrical energy. |
| Injectable Testosterone May Provide Effective Male Contraception Posted: 05 May 2009 11:00 AM PDT Researchers may have found a method for male contraception that is effective, reversible and without serious short-term adverse effects, according to a new study. |
| Why People Are Better At Lying Online Than Telling A Lie Face-to-face Posted: 05 May 2009 11:00 AM PDT In the digital world, it's easier to tell a lie and get away with it. That's good news for liars, but not so good for anyone being deceived. |
| Oral Delivery System For RNAi Therapeutics Posted: 05 May 2009 11:00 AM PDT Researchers have developed a novel approach to the delivery of small bits of genetic material in order to silence genes using "RNA interference" -- and in the process, discovered a potent method of suppressing inflammation in mice similar to what occurs in a range of human diseases. |
| Toward Giving Artificial Cells The Ability For Sustained Movement Posted: 05 May 2009 11:00 AM PDT Scientists in Japan are reporting an advance toward giving artificial cells another hallmark of life — the ability to tap an energy source and use it to undergo sustained movement. Their study describes the first "self-propelled" oil droplets (used as a model for research on artificial cells) that can run on a chemical "fuel." |
| Texting While Driving Can Be Deadly, Study Shows Posted: 05 May 2009 11:00 AM PDT Sending text messages and similar behavior while driving can be deadly, according to research conducted in teens. |
| Self-cleaning Objects And Water-striding Robots May Be Possible With Super Hydrophobic Materials Posted: 05 May 2009 08:00 AM PDT Humans have marveled for millennia at how water beads up and rolls off flowers, caterpillars and some insects, and how insects like water striders are able to walk effortlessly on water. New research into super hydrophobic properties provide hints to researchers to develop these abilities in things like micro-robots, self-cleaning fabrics and other surfaces. |
| Scientists Learn Why The Flu May Turn Deadly: Influenza Virus 'Paralyzes' The Immune System Posted: 05 May 2009 08:00 AM PDT As the swine flu continues its global spread, researchers have discovered important clues about why influenza is more severe in some people than it is in others. In a new study, the scientists show that the influenza virus can actually paralyze the immune systems of otherwise healthy individuals, leading to severe secondary bacterial infections, such as pneumonia. |
| Snowboard Landing Pad Inspired By Accident Posted: 05 May 2009 08:00 AM PDT A student has developed a ski and snowboard landing pad with the hopes of setting a new standard in safety for freestyle skiing and snowboarding. |
| Posted: 05 May 2009 08:00 AM PDT French researchers have discovered a simple and cheap method of predicting who is at greater risk of dying suddenly and unexpectedly from a heart attack. |
| Humans, Not Climate, Driving Increased Dengue Risk In Australia Posted: 05 May 2009 08:00 AM PDT "Drought-proofing" Australia's urban regions by installing large domestic water tanks may enable the dengue mosquito Aedes aegypti to regain its foothold across the country and expand its range of possible infections, according to a new study. |
| Memory Grows Less Efficient Very Early In Alzheimer's Disease Posted: 05 May 2009 08:00 AM PDT Even very early in Alzheimer's disease, people become less efficient at separating important from less important information, a new study has found. |
| Mercury Levels In Arctic Seals May Be Linked To Global Warming Posted: 05 May 2009 05:00 AM PDT Researchers in Canada are reporting for the first time that high mercury levels in certain Arctic seals appear to be linked to vanishing sea ice caused by global warming. Their study provides new insight into the impact of climate change on Arctic marine life. |
| Lithium May Help Radiation Target Cancer, Spare Healthy Tissue Posted: 05 May 2009 05:00 AM PDT Researchers have uncovered a mechanism that helps explain how lithium, a drug widely used to treat bipolar mood disorder, also protects the brain from damage that occurs during radiation treatments. |
| Cow’s Genetic Predisposition Affects Composition Of Her Milk Posted: 05 May 2009 05:00 AM PDT The genetic predisposition of cows has an effect on the fat and protein content of their milk. Researchers have spent the past few years examining the scope and significance of genetic variation between cows for the differences in quality characteristics of milk. They have discovered a number of genes that contribute to this genetic variation. On the basis of the new knowledge, it is possible to devise an innovative breeding program for cows and bulls to increase the proportion of unsaturated fatty acids in the milk and to improve cheese production. |
| Stem Cell Focus For IBD Wound Healing Posted: 05 May 2009 05:00 AM PDT Scientists are investigating whether stem cell markers could have a role to play in speeding up wound healing in patients suffering from inflammatory bowel disease (IBD). |
| 'Lab On A Tube' Monitoring Device Developed Posted: 05 May 2009 05:00 AM PDT The need for improved monitoring of neurotrauma patients has resulted in the development of a prototype of a novel, multitasking "lab on a tube." |
| Psyched Out By Stereotypes: Research Suggests Thinking About The Positive Posted: 05 May 2009 05:00 AM PDT Cognitive scientists have shown that when aware of both a negative and positive stereotype related to performance, women will identify more closely with the positive stereotype, avoiding the harmful impact the negative stereotype unwittingly can have on their performance. This is the first study to examine the influence of concurrent stereotypes, one negative and one positive. It also demonstrated how the negative stereotype encroached on working memory while the positive stereotype did not. |
| Targeting Tumors Using Tiny Gold Particles Posted: 05 May 2009 02:00 AM PDT It has long been known that heat is an effective weapon against tumor cells. However, it's difficult to heat patients' tumors without damaging nearby tissues. Now, researchers have developed tiny gold particles that can home in on tumors, and then, by absorbing energy from near-infrared light and emitting it as heat, destroy tumors with minimal side effects. |
| Drug Prevents Seizure Progression In Model Of Epilepsy Posted: 05 May 2009 02:00 AM PDT Researchers have identified a new anticonvulsant compound that has the potential to stop the development of epilepsy. The research discovery builds on previous work identifying a specific molecular target whose increased activity is associated with seizure disorders, a potassium channel known as the BK channel. |
| New Mouse Model For Understanding Cause Of Progressive Hearing Loss Posted: 05 May 2009 02:00 AM PDT Scientists have developed a new mouse model that can be associated with deafness. With this model they succeeded for the first time in showing that microRNA, a new class of genes, influences hearing loss. The respective microRNA seed region influences the production of sensory hair cells in the inner ear, both in the mouse and in humans. This study represents a major step forward in elucidating the common phenomenon of progressive hearing loss, opening up new avenues for treatment. |
| Notch1 Contributes To Scar Tissue In The Lungs Posted: 05 May 2009 02:00 AM PDT Researchers have identified Notch1 as a mediator of lung fibrosis. Scar tissue, or fibrosis, can accumulate in the lungs, restricting the flow of oxygen and leading to end-stage lung disease, respiratory failure, and eventually death. |
| Stop-gap DNA Repair Needs A Second Step Posted: 05 May 2009 02:00 AM PDT Genetic "mistakes" can occur following a certain form of error-prone DNA repair. Scientists have now revealed how this two-step process takes place. Understanding how this major form of DNA repair works can have significant clinical implications. Since defects in this process increase the risk of cancer, clarifying its nuts and bolts might one day make it possible to enhance it in people whose natural DNA repair is deficient. |
| Examining Social Networking For Terrorists To Find People Behind Terrorist Attacks Posted: 05 May 2009 02:00 AM PDT A new approach to analyzing social networks could help homeland security find the covert connections between the people behind terrorist attacks. The approach involves revealing the nodes that act as hubs in a terrorist network and tracing back to individual planners and perpetrators. |
| Posted: 04 May 2009 11:00 PM PDT In the hotly debated arena of global climate change, using short-term trends that show little temperature change or even slight cooling to refute global warming is misleading, write two climate experts in a paper recently published by the American Geophysical Union -- especially as the long-term pattern clearly shows human activities are causing the earth's climate to heat up. |
| New Light Shed On Enigma Of Salt Intake And Hypertension Posted: 04 May 2009 11:00 PM PDT High salt intake is generally linked to cardiovascular disease risk. But salt-sensitive hypertension still remains an enigma. Now, investigators have shed new light on the relationship between salt intake, bodily processes, and blood pressure regulation. Within the skin, they have detected a new storage area for salt in the body. If the process behind this storage is defect, animals become hypertensive. |
| Norwegian Red Foxes Have More Trichina, But Less Scabies Than Previously Posted: 04 May 2009 11:00 PM PDT Trichina worms (Trichinella spp.) are roundworms that can invade a wide range of animals and man. People are most often infected through eating trichina-containing pork. New research investigated the incidence of trichina and scabies in red foxes in Norway. The research shows that fox scabies is less common now than it was in the 1990's and that the percentage of healthy foxes with antibodies to the parasite has increased. |
| Autologous Muscle-derived Cells May Treat Stress Urinary Incontinence Posted: 04 May 2009 11:00 PM PDT Researchers have confirmed that transplanting autologous muscle-derived cells into the bladder is safe at a wide range of doses and significantly improves symptoms and quality of life in patients with stress urinary incontinence. The study showed that the injection of muscle-derived cells was well tolerated and significantly improved symptoms. |
| When Atoms Are Getting Close: Shortest Carbon-chlorine Single Bond Detected Posted: 04 May 2009 11:00 PM PDT In chemistry as well as in all adjoining sciences, an understanding of chemical bonding is of fundamental importance. Researchers have now been able to detect the shortest single bond ever observed between atoms of chlorine and carbon in a molecule and to clarify the cause of the tight bond. |
| Children With Concussions Require Follow-up Care Before Returning To Play, Say Researchers Posted: 04 May 2009 11:00 PM PDT Children hospitalized with concussions should wait until they are seen by a clinician in a follow-up exam before returning to regular sports or playtime activities, according to new research. The vast majority of such head injuries in children do not occur during athletic activities. |
| White Blood Cells Can Sprout 'Legs' And Move Like Millipedes Posted: 04 May 2009 08:00 PM PDT Scientists have shown that rather than inching along blood vessel walls to reach injured tissue, white blood cells sprout hundreds of "legs" that grip the vessel walls and propel them, millipede-like, to the proper site. |
| Nanoparticle Delivery System Developed To Induce Immunity To Certain STDs Posted: 04 May 2009 08:00 PM PDT Chlamydia trachomatis is the most common bacterial agent of sexually transmitted infections and occurs in 1 million cases a year and is the largest reportable infection in the US. Researchers have designed a unique method for inducing immunity to the infection. The findings could accelerate progress toward developing a vaccine to guard against the infections of Chlamydia trachomatis which frequently lead to reproductive dysfunction and profound local inflammation that requires medical attention. |
| Posted: 04 May 2009 08:00 PM PDT Constantly "re-rolling the dice", combining and selecting: "Evolutionary algorithms" mimic natural evolution in silico and lead to innovative solutions for complex problems. |
| Predominant Risk Factors For First Urinary Tract Infections In College-aged Women Posted: 04 May 2009 08:00 PM PDT Increased sexual activity and alcohol consumption were associated with an increased risk of developing urinary tract infections, and college-aged women experiencing urinary frequency or urgency should seek medical care to treat what may be their first urinary tract infection, according to new research. |
| Easter Island: Volcanism Hotspot Posted: 04 May 2009 08:00 PM PDT Easter Island (aka Rapa Nui) is fascinating due to its remote location in the South Pacific Ocean and its cultural achievement, yielding hundreds of giant stone monoliths. Easter Island also stands out among intra-oceanic volcanic islands for certain remarkable geologic characteristics, such as its location close to the super-fast-spreading East Pacific Rise and above the Easter mantle plume. |
| Children Who View Adult-targeted TV May Become Sexually Active Earlier In Life Posted: 04 May 2009 08:00 PM PDT Children who view adult-targeted TV and movies may become sexually active earlier in life. New research found that for every hour the youngest group of children watched adult-targeted content over the days they were studied, their chances of having sex during early adolescence increased by 33 percent. |
| NASA's Fermi Explores High-energy 'Space Invaders' Posted: 04 May 2009 05:00 PM PDT Since its launch last June, NASA's Fermi Gamma-ray Space Telescope has discovered a new class of pulsars, probed gamma-ray bursts and watched flaring jets in galaxies billions of light-years away. Scientists now reveal new details about high-energy particles implicated in a nearby cosmic mystery. |
| New Therapy Based On Magnetic Stimulation Shows Promise For Non-drug Treatment For Migraine Posted: 04 May 2009 05:00 PM PDT A new study examining the mechanism of a novel therapy that uses magnetic pulses to treat chronic migraine sufferers showed the treatment to be a promising alternative to medication. |
| New Technology Shows Promise Against Resistant Staph Infections Posted: 04 May 2009 05:00 PM PDT Scientists have combined their revolutionary new drug-delivery system with a powerful antimicrobial agent to treat potentially deadly drug-resistant staph infections in mice. Particles infused with nitric oxide are antibacterial and promote wound healing. |
| Controlling Cholesterol, Blood Pressure Adds Up To Prevent Stroke Posted: 04 May 2009 05:00 PM PDT Reaching optimal levels for cholesterol and high blood pressure in people who've had a stroke adds up to prevent a second stroke or heart attack, according to a new study. |
| NASA's Galaxy-Exploring Mission Celebrates Sixth Anniversary Posted: 04 May 2009 05:00 PM PDT NASA's Galaxy Evolution Explorer Mission marks its sixth anniversary studying galaxies beyond our Milky Way through its sensitive ultraviolet telescope, the only such far-ultraviolet detector in space. |
| Brain Processes Written Words As Unique 'Objects,' Neuroscientists Say Posted: 04 May 2009 05:00 PM PDT Neuroscientists have found that an area known to be important for reading in the left visual cortex contains neurons that are specialized to process written words as whole word units. Although some theories of reading as well as neuropsychological and experimental data have argued for the existence of a neural representation for whole written real words (an "orthographic lexicon"), evidence for this has been elusive. In the'brain dictionary,' each whole word is processed by its own set of neurons, a finding that may provide insights for reading disorders. |
| Faster Than The Speed Of Sound: New Control System Has What It Takes To Guide Experimental Aircraft Posted: 04 May 2009 02:00 PM PDT When a jet is flying faster than the speed of sound, one small mistake can tear it apart. And when the jet is so experimental that it must fly unmanned, only a computer control system can pilot it. Engineers have designed control system software that can do just that -- by adapting to changing conditions during a flight. |
| Cellular On And Off Switch For Allergies And Asthma Discovered Posted: 04 May 2009 02:00 PM PDT If you're one of the millions who dread the spring allergy season, things are looking up. Scientists have identified a previously unknown cellular switch that turns allergies and asthma both on and off. |
| Carbon Nanotube Device That Can Detect Colors Of The Rainbow Constructed Posted: 04 May 2009 02:00 PM PDT Researchers have created the first carbon nanotube device that can detect the entire visible spectrum of light, a feat that could soon allow scientists to probe single molecule transformations, study how those molecules respond to light, observe how the molecules change shapes, and understand other fundamental interactions between molecules and nanotubes. |
| Posted: 04 May 2009 02:00 PM PDT On the heels of dismaying reports that a promising anti-tumor drug could, in theory, shorten patients' long-term survival, comes a promising study suggests a potentially better option. |
| Arctic Trek To 'Break The Ice' On New NASA Airborne Radars Posted: 04 May 2009 02:00 PM PDT NASA will 'break the ice' on a pair of new airborne radars that can help monitor climate change as a team of scientists embarks on a two-month expedition to the vast, frigid terrain of Greenland and Iceland. |
| Brain Protein Central To Both Parkinson's, Drug Addiction Identified Posted: 04 May 2009 02:00 PM PDT Scientists have identified a protein that appears not only to be central to the process that causes Parkinson's disease but could also play a role in muting the high from methamphetamine and other addictive drugs. |
| You are subscribed to email updates from ScienceDaily: Latest Science News To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
Inbox too full?  Subscribe to the feed version of ScienceDaily: Latest Science News in a feed reader. | |
| If you prefer to unsubscribe via postal mail, write to: ScienceDaily: Latest Science News, c/o Google, 20 W Kinzie, Chicago IL USA 60610 | |
No comments:
Post a Comment