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Jumat, 01 Juli 2011

ScienceDaily Technology Headlines -- for Friday, July 1, 2011

ScienceDaily Technology Headlines

for Friday, July 1, 2011

Welcome to another edition of ScienceDaily's email newsletter. You can change your subscription options or unsubscribe at any time.


Scientists hope to get glimpse of adolescent universe from revolutionary instrument-on-a-chip (July 1, 2011) -- Thanks to technological advances,scientists hope to provide a picture of how the cosmos developed into the kind of place that could support life like that found on Earth. ... > full story

Transmission lines for nanofocusing of infrared light (July 1, 2011) -- Researchers in Spain report an innovative method to focus infrared light with tapered transmission lines to nanometer-size dimensions. This device could trigger the development of novel chemical and biological sensing tools, including ultra-small infrared spectrometers and lab-on-a-chip integrated biosensors. ... > full story

Takeoffs and landings cause more precipitation near airports, researchers find (July 1, 2011) -- Researchers have found that areas near commercial airports sometimes experience a small but measurable increase in rain and snow when aircraft take off and land under certain atmospheric conditions. The new study is part of ongoing research that focuses on so-called hole punch and canal clouds that form when planes fly through certain mid-level clouds, forcing nearby air to rapidly expand and cool. ... > full story

Recalculation of the Potsdam geoid shows time-dependent variation of gravity (July 1, 2011) -- The "Potsdam Gravity potato", as this representation of terrestrial gravity has become known, can for the first time display gravity variations that change with time. The seasonal fluctuations of the water balance of continents or melting or growing ice masses, i.e. climate-related variables, are now included in the modeling of the gravity field. ... > full story

‘Nanocrystal doping’ results in semiconductor nanocrystals with enhanced electrical function (July 1, 2011) -- Researchers have achieved a breakthrough in the field of nanoscience by successfully altering nanocrystal properties with impurity atoms -- a process called doping -- thereby opening the way for the manufacture of improved semiconductor nanocrystals. ... > full story

Novel analysis method organizes genomic cancer data (June 30, 2011) -- The technology that allows scientists to profile the entire genome of individual tumors offers new hope for discovering ways to select the best treatment for each patient's particular type of cancer. However, these profiles produce huge amounts of data, and the volume alone creates unique analytical problems. In a new study, researchers describe a new analytical approach based on a concept called multiplicity, that can organize large amounts of varied genetic data. ... > full story

Moving microscopic vision into another new dimension (June 30, 2011) -- Scientists who pioneered a revolutionary 3-D microscope technique are now describing an extension of that technology into a new dimension that promises sweeping applications in medicine, biological research, and development of new electronic devices. ... > full story

X-rays reveal patterns in the plumage of the first birds (June 30, 2011) -- Researchers report in Science Express that they have taken a big step in determining what the first birds looked like more than 100 million years ago, when their relatives, the dinosaurs, still ruled the Earth. At the Department of Energy's SLAC National Accelerator Laboratory, they discovered chemical traces of a pigment, an important component of color, that once formed patterns in the feathers of the fossilized birds. ... > full story

Evolutionary kings of the hill use good, bad and ugly mutations to speed ahead of competition (June 30, 2011) -- Evolutionary adaptation is often compared to climbing a hill, and organisms making the right combination of multiple mutations -- both good and bad -- can become the king of the mountain, according to new research. Through computer simulations, researchers were able to watch evolution play out and see how populations use these combinations to evolve from one adaptive state to another. ... > full story

The future of chip manufacturing (June 30, 2011) -- Researchers have shown how to make e-beam lithography, commonly used to prototype computer chips, more practical as a mass-production technique. ... > full story

Squeezed light from single atoms (June 30, 2011) -- Scientists have generated amplitude-squeezed light fields using single atoms trapped inside optical cavities. ... > full story

'Dirty hack' restores Cluster mission from near loss (June 30, 2011) -- Using ingenuity and an unorthodox 'dirty hack', the European Space Agency has recovered the four-satellite Cluster mission from near loss. The drama began in March, when a crucial science package stopped responding to commands -- one of a mission controller's worst fears. ... > full story

Why do we share stories, news and information with others? (June 30, 2011) -- People often share stories, news and information with the people around them. We forward online articles to our friends, share stories with our co-workers at the water cooler and pass along rumors to our neighbors. Such social transmission has been going on for thousands of years, and the advent of social technologies like texting, Facebook and other social media sites has only made it faster and easier to share content with others. ... > full story

'Zombie' stars key to measuring dark energy (June 30, 2011) -- "Zombie" stars that explode like bombs as they die, only to revive by sucking matter out of other stars. According to an astrophysicist, this isn't the plot for the latest 3-D blockbuster movie. Instead, it's something that happens every day in the universe -- something that can be used to measure dark energy. ... > full story

Water can flow below -130°C (June 30, 2011) -- When water is cooled below zero degrees, it usually crystallizes directly into ice. A physicist has now managed to produce sluggishly flowing water at 130 degree below zero under high pressure -- 10,000 times higher than normal pressure. It is possible that this sluggishly fluid and cold water exists on other heavenly bodies. ... > full story

Using fear to guide smart investments (June 30, 2011) -- New research based on an examination of 50 years of market volatility in 10 stock markets in seven different countries, demonstrates that a smart stock market portfolio takes into account both negative returns and the dynamics of psychological volatility. ... > full story

Scientists develop sensitive skin for robots: Intelligent machines develop 'self-awareness' (June 30, 2011) -- Robots will soon be able to feel heat or gentle touching on their surfaces. Researchers in Germany are now producing small hexagonal plates which when joined together form a sensitive skin for "machines with brains." This will not only help robots to better navigate in their environments, it will also enable robot 'self-perception'. A single robotic arm has already been partially equipped with sensors and proves that the concept works. ... > full story

Metal particle generates new hope for hydrogen energy (June 30, 2011) -- Tiny metallic particles produced by Australian chemistry researchers are bringing new hope for the production of cheap, efficient and clean hydrogen energy. ... > full story

Researchers image graphene electron clouds, revealing how folds can harm conductivity (June 30, 2011) -- Chemists have used synchrotron light sources to observe the electron clouds on the surface of graphene, producing a series of images that reveal how folds and ripples in the remarkable material can harm its conductivity. ... > full story

Nanoparticles disguised as red blood cells to deliver cancer-fighting drugs (June 30, 2011) -- Researchers have developed a novel method of disguising nanoparticles as red blood cells, which will enable them to evade the body's immune system and deliver cancer-fighting drugs straight to a tumor. ... > full story

Internet program reduces infant and toddler sleep problems, helps moms sleep better too (June 30, 2011) -- A new study demonstrates that an Internet-based intervention was effective at reducing infant and toddler sleep disturbances, as well as providing positive, indirect benefits for maternal sleep, mood and confidence. The study suggests that the Internet can give parents widespread access to individualized, behaviorally based advice for sleep problems in young children. ... > full story

Scientists developing robotic hand of the future (June 30, 2011) -- Researchers in Spain are working to create a robotic hand that can reproduce the abilities and movements of a human hand in order to achieve the optimal manipulation of objects. ... > full story

Text message support for smokers doubles quit rates (June 30, 2011) -- Cell phones could hold the key to people giving up smoking after a program involving sending motivational and supportive text messages to smokers doubled quit rates at six months. ... > full story

'Sensing skin' could monitor the health of concrete infrastructure continually and inexpensively (June 30, 2011) -- Civil engineers and physicists have designed a new method for the electronic, continual monitoring of concrete infrastructure. The researchers say a flexible skin-like fabric with electrical properties could be adhered to areas of structures where cracks are likely to appear, such as the underside of a bridge, and detect cracks when they occur. Installing this "sensing skin" would be as simple as gluing it to a structure's surface. ... > full story

Outpatient electronic prescribing systems don't cut out common mistakes, study suggests (June 30, 2011) -- Outpatient electronic prescribing systems don't cut out the common mistakes made in manual systems, new research suggests. ... > full story

Unearthing the appearance of ancient animals: X-ray technique for determining fossil pigmentation patterns (June 30, 2011) -- An international team is unearthing the appearance of ancient animals by using the world's most powerful X-rays. New research shows how trace metals in fossils can be used to determine the pigmentation patterns of creatures dead for more than a hundred million years. ... > full story

Pigment patterns from the prehistoric past (June 30, 2011) -- An international collaboration has for the first time revealed chemical traces of pigments in bird, fish and squid fossils, some over 100 million years old. ... > full story

Ultra-sensitive graphene device for spintronics (June 29, 2011) -- A team of European scientist has developed a device capable of detecting an individual magnetic molecule. Such an unprecedented sensitivity opens new paths for spintronics. ... > full story

Growing plants on oil contaminated land (June 29, 2011) -- What happens when there is an oil spill on land? Who cleans it up and how do they do it? By optimizing the use of naturally occurring bacteria, a group of scientists was able to clean contaminated soil without using either chemicals or GMOs. ... > full story

Silver pen has the write stuff for flexible electronics (June 29, 2011) -- The pen may have bested the sword long ago, but now it's challenging wires and soldering irons. Engineers have developed a silver-inked rollerball pen capable of writing electrical circuits and interconnects on paper, wood and other surfaces. The pen is writing whole new chapters in low-cost, flexible and disposable electronics. ... > full story

New method for imaging molecules inside cells (June 29, 2011) -- Using a new sample holder, researchers have further developed a new method for imaging individual cells. This makes it possible to produce snapshots that not only show the outline of the cell's contours but also the various molecules inside or on the surface of the cell, and exactly where they are located, something which is impossible with a normal microscope. ... > full story

Universe's most distant quasar found, powered by massive black hole (June 29, 2011) -- A team of European astronomers has used European Southern Observatory's Very Large Telescope and a host of other telescopes to discover and study the most distant quasar found to date. This brilliant beacon, powered by a black hole with a mass two billion times that of the Sun, is by far the brightest object yet discovered in the early Universe. ... > full story

Natural gases as a therapy for heart disease? (June 29, 2011) -- An understanding of the interaction between hydrogen sulphide (the 'rotten eggs' gas) and nitric oxide, both naturally occurring in the body, could lead to the development of new therapies and interventions to treat heart failure. Researchers have analyzed the complex "cross talk" between hydrogen sulfide and nitric oxide, both gasses that occur naturally in the body, and found that the interaction may offer potential strategies in the management of heart failure. ... > full story

How bumblebees tackle the traveling salesman problem (June 29, 2011) -- New research reveals how bumblebees effectively plan their route between the most rewarding flowers while traveling the shortest distances. ... > full story

Jackson Pollock, artist and physicist? (June 29, 2011) -- A quantitative analysis of Pollock's streams, drips, and coils, by a mathematician reveals that the artist Jackson Pollock had to be slow -- he had to be deliberate -- to exploit fluid dynamics in the way that he did. ... > full story

Bacterium engineered with DNA in which thymine is replaced by synthetic building block (June 29, 2011) -- The genetic information of all living cells is stored in the DNA composed of the four canonical bases adenine (A), cytosine (C), guanine (G) and thymine (T). An international team of researchers has now succeeded in generating a bacterium possessing a DNA in which thymine is replaced by the synthetic building block 5-Chlorouracil (c), a substance toxic for other organisms. ... > full story

Tiny ring laser accurately detects and counts nanoparticles (June 29, 2011) -- A ring-shaped laser no bigger than a pinprick can accurately detect and count individual viruses, the particles that jumpstart cloud formation or those that contaminate the air we breathe. A particle disturbs the light circulating in the ring, splitting the lasing frequency. This split is a measure of the particle's size. ... > full story

Splitsville for boron nitride nanotubes (June 29, 2011) -- Researchers have developed a technique for mass-producing defect-free boron nitride nanoribbons (BNNRs) of uniform length and thickness. BNNRs are predicted to display magnetic and electronic properties that hold enormous potential for future devices. ... > full story

Astronomers discover Universe’s most distant quasar (June 29, 2011) -- A team of astronomers has discovered the most distant quasar to date -- a development that could help further our understanding of a universe still in its infancy following the Big Bang. ... > full story

Researchers contribute to global plant database, expanding ecosystems research (June 29, 2011) -- A new database of plants' traits will help scientists around the world learn more about how climate change is affecting ecosystems. The availability of plant trait data in the unified global database promises to support a paradigm shift in Earth system sciences. ... > full story

Tripping the fluid dynamic: The physics of Jackson Pollock (June 29, 2011) -- The abstract expressionist paintings of Jackson Pollock reveal that the American artist was an intuitive master of the laws that govern the flow of liquids under gravity, according to a multidisciplinary team of researchers. ... > full story

Studying solar wind (June 29, 2011) -- Scientists have measured oxygen isotopes in solar wind, captured by NASA's Genesis mission, to infer the isotopic composition of the sun, and, by inference, the solar system as a whole. ... > full story

Subatomic quantum memory in diamond demonstrated (June 28, 2011) -- Physicists have developed a breakthrough in the use of diamond in quantum physics, marking an important step toward quantum computing. ... > full story

Improved stepladder design may decrease injuries (June 28, 2011) -- Stepladders, a household product used by thousands of people every day, are a surprisingly common cause of injury. In 2009, more than 187,000 Americans visited the hospital after sustaining stepladder injuries, many of which resulted from a fall. A recent human factors/ergonomics study explores how improved design and user behavior can decrease the likelihood of future accidents. ... > full story

Are the wealthiest countries the smartest countries? (June 28, 2011) -- It's not just how free the market is. Some economists are looking at another factor that determines how much a country's economy flourishes: how smart its people are. Researchers have analyzed test scores from 90 countries and found that the intelligence of the people, particularly the smartest 5 percent, made a big contribution to the strength of their economies. ... > full story

Inkjet printing could change the face of solar energy industry (June 28, 2011) -- Inkjet printers, a low-cost technology that in recent decades has revolutionized home and small office printing, may soon offer similar benefits for the future of solar energy. Engineers have discovered a way for the first time to create successful solar devices with inkjet printing, in work that reduces raw material waste by 90 percent and will significantly lower the cost of producing solar energy cells with some very promising compounds. ... > full story

Model finds optimal fiber optic network connections 10,000 times more quickly (June 28, 2011) -- Designing fiber optic networks involves finding the most efficient way to connect phones and computers that are in different places -- a costly and time-consuming process. Now researchers have developed a model that can find optimal connections 10,000 times more quickly, using less computing power to solve the problem. ... > full story

Neutron star bites off more than it can chew (June 28, 2011) -- The European Space Agency's XMM-Newton space observatory has watched a faint star flare up at X-ray wavelengths to almost 10 000 times its normal brightness. Astronomers believe the outburst was caused by the star trying to eat a giant clump of matter. ... > full story


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ScienceDaily Environment Headlines -- for Friday, July 1, 2011

ScienceDaily Environment Headlines

for Friday, July 1, 2011

Welcome to another edition of ScienceDaily's email newsletter. You can change your subscription options or unsubscribe at any time.


Plastic found in nine percent of 'garbage patch' fishes: Tens of thousands of tons of debris annually ingested (July 1, 2011) -- The first scientific results from an ambitious voyage led by a group of graduate students from Scripps Institution of Oceanography at UC San Diego offer a stark view of human pollution and its infiltration of an area of the ocean that has been labeled as the "Great Pacific Garbage Patch." ... > full story

Scientists hope to get glimpse of adolescent universe from revolutionary instrument-on-a-chip (July 1, 2011) -- Thanks to technological advances,scientists hope to provide a picture of how the cosmos developed into the kind of place that could support life like that found on Earth. ... > full story

Transmission lines for nanofocusing of infrared light (July 1, 2011) -- Researchers in Spain report an innovative method to focus infrared light with tapered transmission lines to nanometer-size dimensions. This device could trigger the development of novel chemical and biological sensing tools, including ultra-small infrared spectrometers and lab-on-a-chip integrated biosensors. ... > full story

Takeoffs and landings cause more precipitation near airports, researchers find (July 1, 2011) -- Researchers have found that areas near commercial airports sometimes experience a small but measurable increase in rain and snow when aircraft take off and land under certain atmospheric conditions. The new study is part of ongoing research that focuses on so-called hole punch and canal clouds that form when planes fly through certain mid-level clouds, forcing nearby air to rapidly expand and cool. ... > full story

Scientists study earthquake triggers in Pacific Ocean (June 30, 2011) -- New samples of rock and sediment from the depths of the eastern Pacific Ocean may help explain the cause of large, destructive earthquakes similar to the Tohoku Earthquake that struck Japan in mid-March. Nearly 1,500 meters (almost one mile) of core collected from the ocean floor near the coast of Costa Rica reveal detailed records of approximately two million years of tectonic activity along a seismic plate boundary. ... > full story

Moving microscopic vision into another new dimension (June 30, 2011) -- Scientists who pioneered a revolutionary 3-D microscope technique are now describing an extension of that technology into a new dimension that promises sweeping applications in medicine, biological research, and development of new electronic devices. ... > full story

Tranquillity formula could increase health benefits of visiting urban and country parks (June 30, 2011) -- Researchers have developed a toolkit for measuring tranquillity that could enable neglected or overlooked urban parks to flourish and become a haven for stressed city workers. ... > full story

X-rays reveal patterns in the plumage of the first birds (June 30, 2011) -- Researchers report in Science Express that they have taken a big step in determining what the first birds looked like more than 100 million years ago, when their relatives, the dinosaurs, still ruled the Earth. At the Department of Energy's SLAC National Accelerator Laboratory, they discovered chemical traces of a pigment, an important component of color, that once formed patterns in the feathers of the fossilized birds. ... > full story

Evolutionary kings of the hill use good, bad and ugly mutations to speed ahead of competition (June 30, 2011) -- Evolutionary adaptation is often compared to climbing a hill, and organisms making the right combination of multiple mutations -- both good and bad -- can become the king of the mountain, according to new research. Through computer simulations, researchers were able to watch evolution play out and see how populations use these combinations to evolve from one adaptive state to another. ... > full story

New fossils demonstrate that powerful eyes evolved in a twinkling (June 30, 2011) -- Palaeontologists have uncovered half-a-billion-year-old fossils demonstrating that primitive animals had excellent vision. Scientists found exquisite fossils, which look like squashed eyes from a recently swatted fly. ... > full story

Genetic alterations in pig tissue may allow for human transplantation (June 30, 2011) -- A sizzling genetic discovery may one day allow pig tissue to be transplanted successfully into humans. Scientists have taken a step forward toward filling the shortage of vital organs for human transplantation. Research has shown that altering or overexpressing human programmed death ligand-1 molecule in endothelial cells of pig arteries reduces conditions that cause rejection. This suggests humans could receive altered porcine organs with fewer complications. ... > full story

MicroRNAs in the songbird brain respond to new songs (June 30, 2011) -- Whenever it hears an unfamiliar song from a male of the same species, a zebra finch stops chirping, hopping and grooming. Once it becomes familiar with the song, it goes back to its busy routine. Researchers have now found that levels of microRNAs -- short lengths of ribonucleic acid -- go up or down in the songbird brain after it hears a new song. These microRNAs likely represent a new class of regulatory agents that fine-tune the brain's response to social information. ... > full story

Human ancestor older than previously thought; Finding offers new insights into evolution (June 30, 2011) -- Modern humans never co-existed with Homo erectus -- a finding counter to previous hypotheses of human evolution -- new excavations in Indonesia and dating analyses show. The research offers new insights into the nature of human evolution, suggesting a different role for Homo erectus than had been previously thought. ... > full story

Ladybirds -- wolves in sheep's clothing (June 30, 2011) -- Australian research has revealed that the tremendous diversity of ladybird beetle species is linked to their ability to produce larvae which, with impunity, poach members of "herds" of tiny, soft-bodied scale insects from under the noses of the aggressive ants that tend them. ... > full story

Average U.S. temperature increases by 0.5 degrees F (June 30, 2011) -- According to the 1981-2010 normals to be released by the U.S. National Climatic Data Center, temperatures across the United States were on average, approximately 0.5 degree F warmer than the 1971-2000 time period. Normals serve as a 30 year baseline average of important climate variables that are used to understand average climate conditions at any location and serve as a consistent point of reference. The new normals update the 30-year averages of climatological variables, including average temperature and precipitation for more than 7,500 locations across the United States. ... > full story

2010 one of two warmest years on record; El Niño-Southern Oscillation and other climate patterns play major role (June 30, 2011) -- Worldwide, 2010 was one of the two warmest years on record, according to a new report by the U.S. National Oceanic and Atmospheric Administration. The peer-reviewed report, compiled by 368 scientists from 45 countries, provides a detailed, yearly update on global climate indicators, notable climate events and other climate information from every continent. ... > full story

Unearthing the appearance of ancient animals: X-ray technique for determining fossil pigmentation patterns (June 30, 2011) -- An international team is unearthing the appearance of ancient animals by using the world's most powerful X-rays. New research shows how trace metals in fossils can be used to determine the pigmentation patterns of creatures dead for more than a hundred million years. ... > full story

Pigment patterns from the prehistoric past (June 30, 2011) -- An international collaboration has for the first time revealed chemical traces of pigments in bird, fish and squid fossils, some over 100 million years old. ... > full story

Aircraft influence the local weather, new study shows; Inadvertent cloud seeding can increase precipitation around major airports (June 30, 2011) -- As airplanes fly through the clouds, they often punch holes through the ones that contain supercooled water, or water that has remained in liquid form below its freezing point. Now, researchers say that this phenomenon can lead to increased snowfall around the world's major airports. ... > full story

Rockin' tortoises: A 150-year-old new species (June 29, 2011) -- Researchers investigated a desert tortoise from the United States Southwest and northwestern Mexico. What was thought to be a simple problem in species identification turned out to be a very complex matter. Their investigations required forensic genetics and several other methods. In the end, they found it necessary to describe a new species. More than that, the discovery has very important implications for conservation and the development of the deserts of southern California. ... > full story

New malaria protein structure upends theory of how cells grow and move (June 29, 2011) -- Researchers have now overturned conventional wisdom on how cell movement across all species is controlled, solving the structure of a protein that cuts power to the cell "motor". The protein could be a potential drug target for future malaria and anti-cancer treatments. ... > full story

Multiple sclerosis-like disease discovered in monkeys (June 29, 2011) -- Researchers have discovered a naturally occurring disease in monkeys that is very much like multiple sclerosis in humans -- a discovery that could have a major impact on efforts to understand the cause of multiple sclerosis. ... > full story

SIV-resistant monkeys close the gates to viral infection (June 29, 2011) -- Sooty mangabeys, a type of African monkey, can survive infection by SIV, a relative of HIV, and not succumb to AIDS. Researchers have now identified a way some of sooty mangabeys' immune cells resist infection: they close the gates that SIV and HIV use to get into the cell. The findings may lead to strategies to help HIV-infected individuals cope better with infection. ... > full story

Growing plants on oil contaminated land (June 29, 2011) -- What happens when there is an oil spill on land? Who cleans it up and how do they do it? By optimizing the use of naturally occurring bacteria, a group of scientists was able to clean contaminated soil without using either chemicals or GMOs. ... > full story

New method for imaging molecules inside cells (June 29, 2011) -- Using a new sample holder, researchers have further developed a new method for imaging individual cells. This makes it possible to produce snapshots that not only show the outline of the cell's contours but also the various molecules inside or on the surface of the cell, and exactly where they are located, something which is impossible with a normal microscope. ... > full story

Prodigal plankton species makes first known migration from Pacific to Atlantic via Pole (June 29, 2011) -- Scientists say the melting Arctic has opened a Northwest Passage for Pacific species to enter the Atlantic, including a tiny plankton, unseen in the Atlantic for 800,000 years -- a return unwelcome due to its impact on the marine food web. ... > full story

A happy life is a long one for orangutans (June 29, 2011) -- New research has shown that happier orangutans live longer which may provide insight into the evolution of happiness in humans. Researchers asked keepers who work with orangutans to answer questions about happiness on the animals' behalf. Orangutans which were scored as happier by their keepers were more likely to live longer. ... > full story

Farm animal disease to increase with climate change, scientists say (June 29, 2011) -- Scientists have shown that recent climate change could have caused a serious infectious disease in farm animals to spread through Europe. ... > full story

Domed dinosaur was king of the head butt (June 29, 2011) -- Researchers surveyed the heads of a large number of modern animals as well as one of the world's best dinosaur fossils and they found that the bony anatomy of some pachycephalosaur domes are better at protecting the brain than in any modern head butter. ... > full story

How bumblebees tackle the traveling salesman problem (June 29, 2011) -- New research reveals how bumblebees effectively plan their route between the most rewarding flowers while traveling the shortest distances. ... > full story

Gene flow may help plants adapt to climate change (June 29, 2011) -- The traffic of genes among populations may help living things better adapt to climate change, especially when genes flow among groups most affected by warming, according to a new study. ... > full story

Bacterium engineered with DNA in which thymine is replaced by synthetic building block (June 29, 2011) -- The genetic information of all living cells is stored in the DNA composed of the four canonical bases adenine (A), cytosine (C), guanine (G) and thymine (T). An international team of researchers has now succeeded in generating a bacterium possessing a DNA in which thymine is replaced by the synthetic building block 5-Chlorouracil (c), a substance toxic for other organisms. ... > full story

Climate change makes some chemicals more toxic to aquatic life, study finds (June 29, 2011) -- Some areas of the southern United States are suffering from the longest dry spell since 1887, and a new study shows that could prove problematic for aquatic organisms. ... > full story

Tiny ring laser accurately detects and counts nanoparticles (June 29, 2011) -- A ring-shaped laser no bigger than a pinprick can accurately detect and count individual viruses, the particles that jumpstart cloud formation or those that contaminate the air we breathe. A particle disturbs the light circulating in the ring, splitting the lasing frequency. This split is a measure of the particle's size. ... > full story

Surgeon shows simple cotton swab slashes post-surgical wound infections (June 29, 2011) -- A simple item found in almost every medicine cabinet -- a cotton swab -- may be a key tool in the fight against post-surgical wound infections. ... > full story

Conservation dollars and sense: A case for shark conservation through ecotourism (June 29, 2011) -- New article examines the impact of sharks on coastal economies and the importance of including conservation efforts in long term management plans. ... > full story

BPA-exposed male deer mice are demasculinized and undesirable to females, new study finds (June 29, 2011) -- The latest research shows that BPA causes male deer mice to become demasculinized and behave more like females in their spatial navigational abilities, leading scientists to conclude that exposure to BPA during human development could be damaging to behavioral and cognitive traits that are unique to each sex and important in reproduction. ... > full story

Female mate choice enhances offspring fitness in an annual herb (June 29, 2011) -- Mate choice and sexual selection in plants is more complex in some ways than in animals because plants are sessile organisms and often must rely on external vectors, e.g. animals, for pollen transport. Plants can only do so much to affect the timing of pollen arrival, or the size and diversity of deposited pollen. But can a plant control which pollen grains, of the hundreds that land on their stigmas, make it to the ovules? ... > full story

Peat wildfire smoke linked to heart failure risk (June 29, 2011) -- The 2008 peat bog wildfires in North Carolina led to an increase in emergency room visits for respiratory and cardiovascular effects, records show. ... > full story

GOES satellites see ash still spewing from Chilean volcano (June 29, 2011) -- The Puyehue-Cordon volcano in Chile continues to spew ash that is still disrupting travel as far as Australia and New Zealand this week. ... > full story

Researchers contribute to global plant database, expanding ecosystems research (June 29, 2011) -- A new database of plants' traits will help scientists around the world learn more about how climate change is affecting ecosystems. The availability of plant trait data in the unified global database promises to support a paradigm shift in Earth system sciences. ... > full story

Understanding impacts of aerosols and trace gases on climate and air quality (June 29, 2011) -- Atmospheric aerosol particles (otherwise known as particulate matter) have been masking the true rate of greenhouse gas induced global warming during the industrial period. New investigations show that the aerosol cooling effect will be strongly reduced by 2030, as air pollution abatements are implemented worldwide and the presently available advanced control technologies are utilized. These actions would increase the global mean temperature by roughly 1 degree Celsius. ... > full story

Mystery ingredient in coffee boosts protection against Alzheimer's disease, study finds (June 28, 2011) -- An unidentified coffee component combined with caffeine increases a growth factor that counters Alzheimer's pathology in mice, according to new research. ... > full story

High levels of toxic compounds found on coasts of West Africa (June 28, 2011) -- Scientists have found very high levels of polychlorinated biphenyls (PCBs) along the coasts of West Africa. Production of these extremely toxic compounds has been banned in Europe and the United States for years. These harmful substances could come from the illegal dumping of waste or from an enormous ship breaking yard in Mauritania. ... > full story

Natural sequence farming could affect global climate change (June 28, 2011) -- Improving land management and farming practices in Australia could have an effect on global climate change, according to a new study. ... > full story

Does grilling kill E. coli O157:H7? (June 28, 2011) -- Top sirloin steaks have been getting a grilling in food safety studies. Microbiologists are conducting experiments to help make sure that neither the food-borne pathogen Escherichia coli O157:H7 nor any of its pathogenic relatives will ruin the pleasure of eating this popular entree. ... > full story

Starch-controlling gene fuels more protein in soybean plants (June 28, 2011) -- A newly discovered gene introduced into soybean plants has increased the amount of protein in the plant's seed by 30 to 60 percent. People with protein-starved diets around the world could benefit. ... > full story

Inkjet printing could change the face of solar energy industry (June 28, 2011) -- Inkjet printers, a low-cost technology that in recent decades has revolutionized home and small office printing, may soon offer similar benefits for the future of solar energy. Engineers have discovered a way for the first time to create successful solar devices with inkjet printing, in work that reduces raw material waste by 90 percent and will significantly lower the cost of producing solar energy cells with some very promising compounds. ... > full story


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ScienceDaily Health Headlines -- for Friday, July 1, 2011

ScienceDaily Health Headlines

for Friday, July 1, 2011

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Novel genetic variation linked to increased risk of sudden cardiac arrest (July 1, 2011) -- A study by a global consortium of physician-scientists has identified a genetic variation that may predispose people to double the risk of having a sudden cardiac arrest, a disorder that gives little warning and is fatal in about 95 percent of cases. Although previous, smaller studies have identified some genes with a potential association with sudden cardiac arrest, this is the first study large enough to enable scientists to apply results to the general population. ... > full story

Massive genome studies identify genetics behind white blood cell counts (July 1, 2011) -- A trio of large-scale genome-wide association studies, or GWAS, have identified more than 15 gene variants responsible for the diversity of white blood cell counts among whites, African-Americans, and Japanese. Combined, the studies offer the first comprehensive analysis into why some people, and some populations, have more or fewer white blood cells than others. ... > full story

Combining physical activity with classroom lessons results in improved test scores (July 1, 2011) -- When schools cut physical education programs so students can spend more time in the classroom, they may be missing a golden opportunity to promote learning. ... > full story

Cancer Genome Atlas completes detailed ovarian cancer analysis (July 1, 2011) -- An analysis of genomic changes in ovarian cancer has provided the most comprehensive and integrated view of cancer genes for any cancer type to date. Serous adenocarcinoma is the most prevalent form of ovarian cancer, accounting for about 85 percent of all ovarian cancer deaths. Researchers completed whole-exome sequencing, which examines the protein-coding regions of the genome, on an unprecedented 316 tumors. They also completed other genomic characterizations on these tumors and another 173 specimens. ... > full story

Structural biologists reveal molecular architecture of key NMDA receptor subunit (July 1, 2011) -- Structural biologists have determined the molecular structure of a key portion, or subunit, of a receptor type commonly expressed in brain cells. The receptor is one of several NMDA (N-methyl-D-aspartate) receptor variants, and the subunit in question is that which specifically binds with excitatory neurotransmitters, most notably glutamate. ... > full story

Obese people can suffer from social anxiety disorder due to weight alone (July 1, 2011) -- A new study shows that obese individuals with social anxiety related only to their weight may experience anxiety as severe as individuals with social anxiety disorder (SAD). The findings directly conflict with the criteria for SAD in the Diagnostic and Statistical Manual of Mental Disorders, 4th edition. ... > full story

How social pressure can affect what we remember: Scientists track brain activity as false memories are formed (June 30, 2011) -- How easy is it to falsify memory? New research shows that a bit of social pressure may be all that is needed. The study reveals a unique pattern of brain activity when false memories are formed -- one that hints at a surprising connection between our social selves and memory. ... > full story

New mechanism used by cells to reverse silenced genes (June 30, 2011) -- Scientists have discovered a new mechanism used by cells in the body to turn on silenced genes. This process is critical in preventing the development of cancer -- suggesting the possibility of new therapies that might target the specific changes underlying the disease. ... > full story

Novel analysis method organizes genomic cancer data (June 30, 2011) -- The technology that allows scientists to profile the entire genome of individual tumors offers new hope for discovering ways to select the best treatment for each patient's particular type of cancer. However, these profiles produce huge amounts of data, and the volume alone creates unique analytical problems. In a new study, researchers describe a new analytical approach based on a concept called multiplicity, that can organize large amounts of varied genetic data. ... > full story

Tranquillity formula could increase health benefits of visiting urban and country parks (June 30, 2011) -- Researchers have developed a toolkit for measuring tranquillity that could enable neglected or overlooked urban parks to flourish and become a haven for stressed city workers. ... > full story

Heart transplant patients at risk for serious skin cancers, study finds (June 30, 2011) -- A new study reveals that there is a significant risk of serious skin cancers, including cutaneous squamous cell carcinoma and melanoma, in heart transplant patients. ... > full story

Women win out in gastrointestinal surgery (June 30, 2011) -- In the first study to consider the impact of gender on patient outcomes in major gastrointestinal surgeries, researchers have found that women are more likely to survive after the procedure than men. The pattern is even more pronounced when comparing women before menopause with men of the same age. ... > full story

TV food advertising increases children's preference for unhealthy foods, study finds (June 30, 2011) -- Researchers have found that children who watch advertisements for unhealthy food on television are more likely to want to eat high-fat and high-sugar foods. ... > full story

Your brain on nicotine: Nicotine receptors affect social behavior (June 30, 2011) -- No longer assume that nicotine receptors are only important to smokers trying to quit. Research suggests that these receptors are important in social interaction and the ability to choose between competing motivations. Scientists show that prefrontal cortex nicotinic receptors are essential for social interaction in mice, with this area of the brain necessary for balanced social interactions. This knowledge could lead to treatments for ADHD, schizophrenia and depression. ... > full story

Variation in make-up of generic epilepsy drugs can lead to dosing problems, study suggests (June 30, 2011) -- Generic anti-epilepsy drugs, pharmaceutical products similar to brand-name versions, save consumers billions of dollars each year, but some are different enough from branded formulations that they may not be effective, particularly if patients switch between two generic drugs, a new study suggests. ... > full story

Why do we share stories, news and information with others? (June 30, 2011) -- People often share stories, news and information with the people around them. We forward online articles to our friends, share stories with our co-workers at the water cooler and pass along rumors to our neighbors. Such social transmission has been going on for thousands of years, and the advent of social technologies like texting, Facebook and other social media sites has only made it faster and easier to share content with others. ... > full story

Genetic alterations in pig tissue may allow for human transplantation (June 30, 2011) -- A sizzling genetic discovery may one day allow pig tissue to be transplanted successfully into humans. Scientists have taken a step forward toward filling the shortage of vital organs for human transplantation. Research has shown that altering or overexpressing human programmed death ligand-1 molecule in endothelial cells of pig arteries reduces conditions that cause rejection. This suggests humans could receive altered porcine organs with fewer complications. ... > full story

Resistant mice provide clues about successful immune response to retroviruses (June 30, 2011) -- A new study identifies a key virus-sensing mechanism that is necessary for a successful immune response against infection with a particularly deadly type of virus. ... > full story

Scientists identify order of mutations that lead to cancer (June 30, 2011) -- Scientists have begun to reveal the order of the genetic aberrations in individual cancers in a finding they say is key to early diagnosis and personalized medicine. ... > full story

Osteoarthritis incidence significantly higher among U.S. military personnel compared to general population, study finds (June 30, 2011) -- New research shows significantly higher osteoarthritis (OA) incidence rates in military populations than among comparable age groups in the general population. The magnitude of the difference in OA rates between military service members and the general population also increased with advancing age category. ... > full story

Fidgeting your way to fitness (June 30, 2011) -- Walking to the photocopier and fidgeting at your desk are contributing more to your cardiorespiratory fitness than you might think. ... > full story

Researchers can predict future actions from human brain activity (June 30, 2011) -- Bringing the real world into the brain scanner, researchers can now determine the action a person was planning, mere moments before that action is actually executed. ... > full story

Lung cancer: Study shows 20 percent reduction in mortality with low-dose CT vs chest X-ray (June 30, 2011) -- Scientists have found a 20 percent reduction in deaths from lung cancer among current or former heavy smokers who were screened with low-dose helical computed tomography (CT) versus those screened by chest X-ray. This finding provides a more extensive analysis of the data originally reported in November 2010 while providing additional data to the public and research community without barriers to access. ... > full story

Getting enough 'sunshine vitamin' may not just be about catching rays, new blood test reveals (June 30, 2011) -- Researchers have developed a new highly-accurate blood test which can detect how much a patient’s diet could be responsible for a lack of the so-called ‘sunshine vitamin’. Vitamin D deficiencies can weaken the immune system and increase the risk of cancer and osteoporosis. For the first time, the different forms of vitamin D the body absorbs from diet and sunlight, known as vitamin D2 and vitamin D3 respectively, can be individually distinguished from closely related compounds. ... > full story

Drink-fueled memory blackouts among students predict future injury risk (June 30, 2011) -- The higher the number of drink-fueled memory blackouts a student experiences, the greater is his/her risk of sustaining a future injury while under the influence, reveals new nresearch. ... > full story

Nanoparticles disguised as red blood cells to deliver cancer-fighting drugs (June 30, 2011) -- Researchers have developed a novel method of disguising nanoparticles as red blood cells, which will enable them to evade the body's immune system and deliver cancer-fighting drugs straight to a tumor. ... > full story

New therapy for childhood neuroblastoma proves feasible and safe, study finds (June 30, 2011) -- A new treatment option may soon be available for children with neuroblastoma, according to new research. ... > full story

Internet program reduces infant and toddler sleep problems, helps moms sleep better too (June 30, 2011) -- A new study demonstrates that an Internet-based intervention was effective at reducing infant and toddler sleep disturbances, as well as providing positive, indirect benefits for maternal sleep, mood and confidence. The study suggests that the Internet can give parents widespread access to individualized, behaviorally based advice for sleep problems in young children. ... > full story

Text message support for smokers doubles quit rates (June 30, 2011) -- Cell phones could hold the key to people giving up smoking after a program involving sending motivational and supportive text messages to smokers doubled quit rates at six months. ... > full story

Possible way to make bladder cancer cells more susceptible to chemotherapy (June 30, 2011) -- Researchers have discovered a way of sensitizing muscle-invasive bladder cancer cells so that they succumb to the toxic effects of chemotherapy. ... > full story

Blocking molecular target could make more cancers treatable with PARP inhibitors (June 30, 2011) -- Researchers have demonstrated a molecular strategy they say could make a much larger variety of tumors treatable with PARP inhibitors, a promising new class of cancer drugs. They report that the BRCA1 repair protein is dependent on the protein CDK1. When the scientists blocked CDK1 in cancer cell lines and in a mouse model of lung cancer, BRCA1 function was disrupted, making them susceptible to being killed by a PARP inhibitor. ... > full story

Outpatient electronic prescribing systems don't cut out common mistakes, study suggests (June 30, 2011) -- Outpatient electronic prescribing systems don't cut out the common mistakes made in manual systems, new research suggests. ... > full story

Flexible schedule is key to keeping working moms on the job (June 30, 2011) -- Women who return to work after giving birth are more likely to stay on the job if they have greater control over their work schedules. Researchers also found that job security and the ability to make use of a variety of their job skills leads to greater retention of working moms, while the impact of work-related stress on their physical and mental health causes greater turnover. ... > full story

Up to 220,000 California children excluded from health care reform due to immigrant status, experts say (June 30, 2011) -- Restrictions on eligibility for health care reform programs will result in the potential exclusion of up to 220,000 children from affordable health care coverage in California, according to a new policy brief. The number represents up to 20 percent of all uninsured children in California. ... > full story

Cancer Genome Atlas completes detailed ovarian cancer analysis (June 30, 2011) -- As part of the Cancer Genome Atlas project, North Carolina researchers have contributed to the most comprehensive an integrated view of cancer genes for any cancer type produced to date. ... > full story

Targeted contrast agent reveals colon cancer (June 30, 2011) -- Colon cancer could become easier to detect, thanks to a newly developed medical contrast agent and advanced optics that illuminate dangerous, invisible polyps. ... > full story

Components of speech recognition pathway in humans identified (June 29, 2011) -- Neuroscientists have defined, for the first time, three different processing stages that a human brain needs to identify sounds such as speech -- and discovered that they are the same as ones identified in non-human primates. ... > full story

New malaria protein structure upends theory of how cells grow and move (June 29, 2011) -- Researchers have now overturned conventional wisdom on how cell movement across all species is controlled, solving the structure of a protein that cuts power to the cell "motor". The protein could be a potential drug target for future malaria and anti-cancer treatments. ... > full story

Model of a migraine indicates increased neuronal excitability as a possible cause (June 29, 2011) -- Familial hemiplegic migraine is a rare and severe subtype of migraine with aura, an unusual sensory experience preceding the migraine attack. Researchers in Italy have developed a mouse model of familial hemiplegic migraine type 2 and used it to investigate the migraine's cause. ... > full story

Can soda tax curb obesity? Surprising reason why soda tax to reduce obesity won't work (June 29, 2011) -- To many, a tax on soda is a no-brainer in advancing the nation's war on obesity. Advocates point to a number of recent studies in that conclude that sugary drinks have a lot to do with why Americans are getting fatter. But obese people tend to drink diet sodas, and therefore taxing soft drinks with added sugar or other sweeteners is not a good weapon in combating obesity, according to a new study. ... > full story

Who's happy? How long we look at happy faces is in our genes (June 29, 2011) -- Though we all depend on reading people's faces, each of us sees others' faces a bit differently. At one end of this spectrum people with autism spectrum conditions look less at other people's faces, and have trouble understanding others people's feelings. New research has found variations of the cannabinoid receptor gene that alter the amount of time people spend looking at happy faces. ... > full story

Multiple sclerosis-like disease discovered in monkeys (June 29, 2011) -- Researchers have discovered a naturally occurring disease in monkeys that is very much like multiple sclerosis in humans -- a discovery that could have a major impact on efforts to understand the cause of multiple sclerosis. ... > full story

Ghrelin likely involved in why we choose 'comfort foods' when stressed (June 29, 2011) -- A new study suggests that ghrelin -- the so-called "hunger hormone" -- is involved in why some people turn to "comfort foods" when stressed. ... > full story

SIV-resistant monkeys close the gates to viral infection (June 29, 2011) -- Sooty mangabeys, a type of African monkey, can survive infection by SIV, a relative of HIV, and not succumb to AIDS. Researchers have now identified a way some of sooty mangabeys' immune cells resist infection: they close the gates that SIV and HIV use to get into the cell. The findings may lead to strategies to help HIV-infected individuals cope better with infection. ... > full story

Many Americans approve of stem cell research for curing serious diseases (June 29, 2011) -- While research using human embryonic stem cells has roused political controversy for almost two decades, little has been done to scientifically assess American attitudes on the subject. New research provides decision-makers with a much clearer picture of how their constituents truly feel about the subject. ... > full story

Low body fat may not lower risk for heart disease and diabetes, genetic study shows (June 29, 2011) -- Having a lower percentage of body fat may not always lower your risk for heart disease and diabetes, according to a new study. ... > full story

Mechanism by which chronic stress causes brain disease identified (June 29, 2011) -- Chronic stress has long been linked with neurodegeneration. Scientists at now think they may know why. ... > full story

Lack of empathy following traumatic brain injury associated with reduced responsiveness to anger (June 29, 2011) -- Egocentric, self-centred, and insensitive to the needs of others: these social problems often arise in people with severe traumatic brain injury (TBI) and have been attributed in part to a loss of emotional empathy, the capacity to recognise and understand the emotions of other people. A new study has recently revealed evidence of a relationship between physiological responses to anger and a reduction of emotional empathy post-injury. ... > full story


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