martes, 29 de diciembre de 2009
Rise in human-made carbon dioxide affects ocean acoustics
ScienceDaily (2009-12-23) -- Oceanographers have discovered that seawater sound absorption will drop by up to 70 percent this century, due to rising atmospheric carbon dioxide causing ocean acidification. As a result, underwater sound could travel farther, and this could lead to growing noise levels in the oceans. Increasing transparency of the oceans to low-frequency sounds could also enable marine mammals to communicate over longer distances.
Pomegranates: Latest weapon in the fight against MRSA
ScienceDaily (2009-12-22) -- Pomegranates have already been hailed as a super-food but a team of scientists has found a new use for the deep red fruit. The team has discovered that the rind can be turned into an ointment for treating MRSA and other common hospital infections.
Of girls and geeks: Environment may be why women don't like computer science
ScienceDaily (2009-12-28) -- In real estate, it's location, location, location. And when it comes to why girls and women shy away from careers in computer science, a key reason is environment, environment, environment.
New warning system warns of driver drowsiness and distraction
ScienceDaily (2009-12-26) -- Scientists have developed the latest version of a driving assistance system which controls the driver's attention level and helps to avoid accidents caused by drowsiness or distractions at the wheel.
Iranian Scholars Share Avicenna's Medieval Medical Wisdom
ScienceDaily (2009-12-27) -- For pulmonary ailments, certain medieval physicians had a useful medical textbook on hand offering detailed information remarkably similar to those a modern doctor might use today.
Glacier melt adds ancient edibles to marine buffet
ScienceDaily (2009-12-27) -- Glaciers along the Gulf of Alaska are enriching stream and near shore marine ecosystems from a surprising source -- ancient carbon contained in glacial runoff.
Synesthetic experiences, such as seeing a certain color associated with a number, are real and automatic
ScienceDaily (2009-12-27) -- For as many as 1 in 20 people, everyday experiences can elicit extra-ordinary associated sensations. The condition is known as synesthesia and the most common form involves "seeing" colors when reading words and numbers.
How can evolutionary responses to climate change be measured?
ScienceDaily (2009-12-28) -- As global temperatures continue to rise, scientists are presented with the complex challenge of understanding how species respond and adapt.
Women tend to have better sense of touch due to smaller finger size
ScienceDaily (2009-12-28) -- People who have smaller fingers have a finer sense of touch, according to new research. This finding explains why women tend to have better tactile acuity than men, because women on average have smaller fingers.
The past matters to plants
ScienceDaily (2009-12-26) -- It's commonly known that plants interact with each other on an everyday basis: they shade each other out or take up nutrients from the soil before neighboring plants can get them. Now, researchers have learned that plants also respond to the past.
Further progress toward AIDS vaccine: Rabies-virus vaccine protects monkeys
ScienceDaily (2009-12-26) -- Researchers are one step closer to developing a vaccine against the AIDS disease. They have found that a rabies virus-based vaccine administered to monkeys protected against the simian equivalent of the HIV virus (SIV).
Pot and pop: New research finds stronger link between music and marijuana use among teens
ScienceDaily (2009-12-23) -- Teens who frequently listen to music that contains references to marijuana are more likely to use the drug than their counterparts with less exposure to such lyrics, according to a new study.
Teenagers use violence to boost their social standing
ScienceDaily (2009-12-23) -- A new study looks in depth at the social relationships between male and female teenagers, relational violence, and psycho-social adjustment factors such as loneliness, self-esteem and satisfaction with life. The results show that young people who want to be better appreciated and respected within their group are the most likely to be violent.
Marine Research Is Key To 'Super Foods' Market
ScienceDaily (2009-12-24) -- Milk drinks that lower blood pressure, meat products that reduce the risk of heart disease, chocolate that calms you down and a new range of foods that can fight obesity can be created from marine animals and plants. Japan already has several product ranges on the shelves and research programs are underway all over the world to create more. And now Ireland is well on the way to becoming a player in this worldwide multi-billion euro industry, according to recently presented research results.
Scientists map speed of climate change for different ecosystems
ScienceDaily (2009-12-24) -- From beetles to barnacles, pikas to pine warblers, many species are already on the move in response to shifting climate regimes. But how fast will they -- and their habitats -- have to move to keep pace with global climate change over the next century? Scientists have calculated that on average, ecosystems will need to shift about 0.42 kilometers per year to keep pace with changing temperatures across the globe.
Fisheries and aquaculture face multiple risks from climate change
ScienceDaily (2009-12-22) -- Marine capture fisheries already facing multiple challenges due to overfishing, habitat loss and weak management are poorly positioned to cope with new problems stemming from climate change, a new study suggests.
Discrimination in the citations that scientists use
ScienceDaily (2009-12-22) -- Science does not have to be altruistic. In fact, most of the time it is egotistic, according to a study by researchers in Spain that analyzes the discrimination that exists in citations of scientific articles in articles where researchers publish their results.
Fountain of Youth Discovered?
The University of Alabama at Birmingham (UAB ) has published an important research paper that shows a clear link between calorie intake and the lifespan of human cells.
Researchers from the have discovered that restricting consumption of glucose, the most common dietary sugar, can extend the life of healthy human-lung cells and speed the death of precancerous human-lung cells, reducing cancer's spread and growth rate.
martes, 22 de diciembre de 2009
Movement comes with appetite
ScienceDaily (2009-12-21) -- A body that is provided with food too often gets caught up in the maelstrom of a lack of exercise, obesity and ultimately diabetes. The trigger is a molecular switch that is controlled by insulin, a new study has revealed.
New filling, cooling and storage system may prevent bacterial growth and prolong shelf life of orange juice
ScienceDaily (2009-12-21) -- Researchers in Brazil have estimated the growth timeline of a bacterium that causes orange juice spoilage during shelf life (approximately 6 months) and developed a safe and inexpensive filling, cooling, and storage protocol that inhibits bacterial growth and offers an alternative to other proposed treatments.
Having children makes you more like your own parents
ScienceDaily (2009-12-21) -- “I’ll never be like my parents.” Many youngsters must have said this at least once in their lives. The truth emerges as soon as you have your own children: you increasingly become more like your own parents.
Computer algorithm identifies authentic Van Gogh
ScienceDaily (2009-12-21) -- A researcher in the Netherlands has developed computer algorithms to support art historians and other art experts in their visual assessment of paintings. His digital technology is capable of distinguishing a forgery from an authentic Van Gogh based on the painter's characteristic brush work and use of color.
Physicist sees through the opaque with 'T-rays'
ScienceDaily (2009-12-21) -- "T-rays" may make X-rays obsolete as a means of detecting bombs on terrorists or illegal drugs on traffickers, among other uses, contends a physicist who is helping lay the theoretical groundwork to make the concept a reality. In addition to being more revealing than X-rays in some situations, T-rays do not have the cumulative possible harmful effects.
Sixty headless skeletons -- 3,000 years old -- discovered in Pacific Ocean archipelago Vanuatu
ScienceDaily (2009-12-21) -- A find of 60 headless skeletons summer 2009 may reveal the identity of the people who first inhabited the Pacific Ocean archipelago Vanuatu 3000 years ago.
Preschoolers in Child Care Centers Not Active Enough
ScienceDaily (2009-12-21) -- Many young children in child care centers are not getting as much active playtime as they should, according to new research.
Predicting insurgent attacks with a mathematical model
ScienceDaily (2009-12-21) -- Scientists have found a unified model of human insurgency that can estimate the timing and strength of insurgent attacks in present and future wars.
Postural sway among abstinent alcoholics can be improved up to a point
ScienceDaily (2009-12-21) -- Excessive sway during quiet standing is a common and significant consequence of chronic alcoholism, even after prolonged sobriety, and can lead to fall-related injury and even death. A new study of residual postural instability in alcohol-abstinent men and women shows that alcoholics improve with prolonged sobriety, but the improvement may not fully erase the problem of instability.
Mystery of golden ratio explained
ScienceDaily (2009-12-21) -- The golden ratio is a geometric proportion that has been theorized to be the most aesthetically pleasing to the eye and has been the root of countless mysteries over the centuries. Now, an engineer has found it to be a compelling springboard to unify vision, thought and movement under a single law of nature's design.
Faster, cheaper DNA sequencing method devised
ScienceDaily (2009-12-22) -- Biomedical engineers have devised a method for making future genome sequencing faster and cheaper by dramatically reducing the amount of DNA required, thus eliminating the expensive, time-consuming and error-prone step of DNA amplification.
Orphanages are viable options for some children, study finds
ScienceDaily (2009-12-22) -- A study of more than 3,000 orphaned and abandoned children in five Asian and African countries has found that children in institutional orphanages fare as well or better than those who live in the community.
Shift working aggravates metabolic syndrome development among middle-aged males
ScienceDaily (2009-12-19) -- Metabolic syndrome management is an important health issue in modern workplaces. In terms of workplace health management, both hazard exposures and the baseline health condition of workers should be evaluated. A five-year follow-up study for metabolic syndrome development was conducted in Taiwan for male workers. A significant association between shift work exposure and development of metabolic syndrome was found among male workers.
Nocturnal wind maximum mapped for first time
ScienceDaily (2009-12-20) -- On beautiful, sunny days with quiet weather conditions a strong wind develops in the evening at a height of about 200 meters. Scientists have now mapped how such a powerful wind develops high in the air.
Tropical birds waited for land crossing between North and South America, study finds
ScienceDaily (2009-12-20) -- Despite their ability to fly, tropical birds waited until the formation of the land bridge between North and South America to move northward, according to a new study.
Warming climate chills Sonoran Desert's spring flowers
ScienceDaily (2009-12-20) -- Global warming is giving a boost to Sonoran Desert plants that have an edge during cold weather, according to new research. Although overall numbers of winter annuals have declined since 1982, species that germinate and grow better at low temperatures are becoming more common. As a result, the composition of the desert's spring wildflower display is changing, according to new research.
Cannabis damages young brains more than originally thought, study finds
ScienceDaily (2009-12-20) -- The damaging effects of the illicit drug Cannabis on young brains are worse than originally thought, according to a psychiatric researcher. A new study suggests that daily consumption of cannabis in teens can cause depression and anxiety, and have an irreversible long-term effect on the brain.
Moderate fish consumption may lower risk in patients with a history of heart failure
ScienceDaily (2009-12-21) -- Including fish in a balanced diet has long been associated with the prevention of heart disease, and scientists now believe that it can help preserve heart function in patients who have experienced heart failure. A new study reports that moderate fish consumption can help reduce the risk of left ventricular systolic dysfunction (LVSD) in post acute coronary syndrome (ACS) patients.
Now you see it, now you know you see it
ScienceDaily (2009-12-21) -- Psychologists say that time lag between unconscious perception and conscious recognition of a visual stimulus can vary depending on the complexity of the stimulus.
Adolescent boys seeking 'the norm' may take risks with their appearances
ScienceDaily (2009-12-21) -- Teen-aged boys are more likely to use tanning booths, take diet pills and have their bodies waxed -- even if they think those activities are unhealthy -- if they are influenced by their peers, according to new research.
Valuable, rare, raw earth materials extracted from industrial waste stream
ScienceDaily (2009-12-19) -- Fierce competition over raw materials for new green technologies could become a thing of the past, thanks to a discovery by scientists in the UK.
Dyslexia: Some very smart accomplished people cannot read well
ScienceDaily (2009-12-19) -- Contrary to popular belief, some very smart, accomplished people cannot read well. This unexpected difficulty in reading in relation to intelligence, education and professional status is called dyslexia, and researchers have presented new data that explain how otherwise bright and intelligent people struggle to read.
Food-borne illness: Researchers redefine the invasion mechanism of Salmonella
ScienceDaily (2009-12-20) -- Bacteria of the genus Salmonella cause most food-borne illnesses. The bacteria attach to cells of the intestinal wall and induce their own ingestion by cells of the intestinal epithelium. Up till now, researchers assumed that Salmonella have to induce the formation of distinctive membrane waves in order to invade these gut cells. Researchers in Germany have now refuted this common doctrine.
New nasal vaccine blocks parasite transmission to mosquitoes
ScienceDaily (2009-12-20) -- An experimental nasally administered malaria vaccine prevented parasite transmission from infected mice to mosquitoes and could play an important role in the fight against human malaria.
Bourbon versus vodka: Bourbon hurts more the next day, due to byproducts of fermenting process
ScienceDaily (2009-12-18) -- Many alcoholic beverages contain byproducts of the materials used in the fermenting process. These byproducts are called "congeners," complex organic molecules with toxic effects including acetone, acetaldehyde, fusel oil, tannins, and furfural. Bourbon has 37 times the amount of congeners that vodka has. A new study has found that while drinking a lot of bourbon can cause a worse hangover than drinking a lot of vodka, impairment in people's next-day task performance is about the same for both beverages.
Europe's flora is becoming impoverished
ScienceDaily (2009-12-18) -- With increasing species richness, due to more plant introductions than extinctions, plant communities of many European regions are becoming more homogeneous. The same species are occurring more frequently, whereas rare species are becoming extinct. It is not only the biological communities that are becoming increasingly similar, but also the phylogenetic relations between regions. These processes have led to a loss of uniqueness among European flora.
Rate of autism disorders climbs to one percent among 8-year-olds
ScienceDaily (2009-12-18) -- One in 110 American 8-year-olds is classified as having an autism spectrum disorder, a 57 percent increase in ASD cases compared to four years earlier.
Eat fruits and vegetables for better vision
ScienceDaily (2009-12-19) -- Carotenoids, found in green leafy vegetables and colored fruits, have been found to increase visual performance and may prevent age-related eye diseases, according to a new study.
Why does a human baby need a full year before starting to walk?
ScienceDaily (2009-12-19) -- Why does a human baby need a full year before it can start walking, while a newborn foal gets up on its legs almost directly after birth? Scientist have assumed that human motor development is unique because our brain is unusually complex and because it is particularly challenging to walk on two legs. But now a research group in Sweden has shown that human babies in fact start walking at the same stage in brain development as most other walking mammals, from small rodents to elephants.
Happiest Americans live in states ranked highest for quality of life
ScienceDaily (2009-12-21) -- New research in the US into the happiness levels of a million individual US citizens have revealed their personal happiness levels closely correlate with earlier research that ranked the quality of life available in the US's 50 states.
Movement comes with appetite
ScienceDaily (2009-12-21) -- A body that is provided with food too often gets caught up in the maelstrom of a lack of exercise, obesity and ultimately diabetes. The trigger is a molecular switch that is controlled by insulin, a new study has revealed.
lunes, 21 de diciembre de 2009
Turning a cell phone into a microscope
Cell phone + Microscope = CellScope. Graduate students in the bioengineering lab at UC Berkeley have discovered a way to turn an ordinary cellphone in a microscope. The Cellscope can capture, organize and transmit images of blood cells, lesions and infections taken anywhere in world - a great advance for the developing world and medical imaging.
http://www.smartplanet.com/people/video/turning-a-cell-phone-into-a-microscope/374084/
viernes, 18 de diciembre de 2009
Education: Learning styles debunked
ScienceDaily (2009-12-17) -- Are you a verbal learner or a visual learner? Chances are, you've pegged yourself or your children as either one or the other and rely on study techniques that suit your individual learning needs. However, a new report finds no evidence for the learning styles hypothesis.
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New 'golden ratios' for female facial beauty
ScienceDaily (2009-12-17) -- Beauty is not only in the eye of the beholder but also in the relationship of the eyes and mouth of the beholden. The distance between a woman's eyes and the distance between her eyes and her mouth are key factors in determining how attractive she is to others, according to new psychology research.
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lunes, 14 de diciembre de 2009
Caffeine doesn't reverse the negative cognitive impact of alcohol, study shows
ScienceDaily (2009-12-13) -- People who drink may want to know that coffee won't sober them up, according to new laboratory research. Instead, a cup of coffee may make it harder for people to realize they're drunk.
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viernes, 11 de diciembre de 2009
Breakthrough in monitoring tropical deforestation announced in Copenhagen
ScienceDaily (2009-12-11) -- New technology is revolutionizing forest monitoring by marrying free satellite imagery and powerful analytical methods in an easy-to-use, desktop software package called CLASlite. Thus far, 70 government, non-government and academic organizations in five countries have adopted the technology, with more on the horizon.
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Bullying at school linked to bullying at home
ScienceDaily (2009-12-10) -- Children who bully at school are likely to also bully their siblings at home. This is the finding of a new study. Researchers investigated whether the age and gender of a child’s siblings predicted whether children were likely to bully, or to become victims of bullying.
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jueves, 10 de diciembre de 2009
Everyday germs in childhood may prevent diseases in adulthood
ScienceDaily (2009-12-09) -- A new study suggests that American parents should ease up on the antibacterial soap. Exposure to infectious microbes early in life may actually protect children from cardiovascular diseases that can lead to death as an adult. The study is the first to look at how microbial exposures early in life affect inflammatory processes related to diseases associated with aging in adulthood. Ultra-clean environments may be depriving developing immune networks of important environmental input.
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Effort to regenerate damaged spinal cords turns to new model: Mexican axolotl salamander
ScienceDaily (2009-12-09) -- For more than 400 years, scientists have studied the amazing regenerative power of salamanders, trying to understand how these creatures routinely repair injuries that would usually leave humans and other mammals paralyzed -- or worse. Now, researchers have begun creating genomic tools necessary to compare the extraordinary regenerative capacity of the Mexican axolotl salamander with established mouse models of human disease and injury.
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Human umbilical stem cells cleared mice's cloudy eyes
ScienceDaily (2009-12-09) -- New research from the University of Cincinnati (UC) may help in the recovery of lost vision for patients with corneal scarring.
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Scientists reveal key structure from Ebola virus
ScienceDaily (2009-12-09) -- Scientists have determined the structure of a critical protein from the Ebola virus, which, though rare, is one of the deadliest viruses on the planet killing between 50 and 90 percent of those infected.
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Pitch of blue whale songs is declining around the world, scientists discover
ScienceDaily (2009-12-09) -- The sound level of songs blue whales sing across the vast expanses of the ocean to attract potential mates has been steadily creeping downward for the past few decades, and scientists believe the trend may be good news for the population of the endangered marine mammal.
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martes, 8 de diciembre de 2009
Discovery of the Jekyll-and-Hyde factors in 'coral bleaching'
ScienceDaily (2009-12-07) -- Scientists are reporting the first identification of substances involved in the Jekyll-and-Hyde transformation that changes harmless marine bacteria into killers that cause "coral bleaching."
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miércoles, 2 de diciembre de 2009
New brain connections form rapidly during motor learning
ScienceDaily (2009-11-30) -- New connections begin to form between brain cells almost immediately as animals learn a new task, according to a study in which researchers observed the rewiring processes that take place in the brain during motor learning.
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Men and women may respond differently to danger
ScienceDaily (2009-11-30) -- Researchers using functional magnetic resonance imaging to study brain activation have found that men and women respond differently to positive and negative stimuli, according to a new study..
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Therapeutic benefits of the human-animal bond
ScienceDaily (2009-11-30) -- A pet owner knows the enormous joy and comfort that an animal can provide, especially in troubled times. Most pets are considered important members of the family and irreplaceable companions. A growing body of research now documents the value of the human-animal bond in child development, elderly care, mental illness, physical impairment, dementia, abuse and trauma recovery, and the rehabilitation of incarcerated youth and adults.
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New culprit for viral infections among elderly -- an overactive immune response
ScienceDaily (2009-11-30) -- Researchers have found that exaggerated responses of the immune system explain why the elderly succumb to viral infections more readily than younger people. The study bucks the general belief that declining immune responses are to blame for susceptibility to viral infections.
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New transparent insulating film could enable energy-efficient displays
ScienceDaily (2009-11-30) -- Materials scientists have found a way to transform a chemical long used as an electrical conductor a thin film insulator potentially useful in transistor technology and in devices such as electronic books.
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Smart phones allow quick diagnosis of acute appendicitis
ScienceDaily (2009-11-30) -- Radiologists can accurately diagnose acute appendicitis from a remote location with the use of a hand-held device or mobile phone equipped with special software, according to a new study.
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Climate studies to benefit from 12 years of satellite aerosol data
ScienceDaily (2009-11-30) -- Aerosols, very small particles suspended in the air, play an important role in the global climate balance and in regulating climate change. They are one of the greatest sources of uncertainty in climate change models. ESA's GlobAerosol project has been making the most of European satellite capabilities to monitor them.
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Climate change in Kuwait Bay: Higher temperatures having profound effects
ScienceDaily (2009-11-30) -- Since 1985, seawater temperature in Kuwait Bay, northern Persian Gulf, has increased on average 0.6 degrees Celsius per decade. This is about three times faster than the global average rate reported by the Intergovernmental Panel on Climate Change. Differences are due to regional and local effects. Increased temperatures are having profound effects on key habitats and on power generation the Persian Gulf.
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Traditional indigenous fire management techniques deployed against climate change
ScienceDaily (2009-12-01) -- A landmark Australian project that mitigates the extent and severity of natural savannah blazes by deploying traditional Indigenous fire management techniques is being hailed as a model with vast global potential in the fights against climate change and biodiversity loss, and for protecting indigenous lands and culture. Proponents heading to climate change talks in Copenhagen say similar projects can be adopted in the savannas of Africa, where the potential for reductions is very high.
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Amphibians as environmental omen disputed
ScienceDaily (2009-11-30) -- Amphibians, for years considered a leading indicator of environmental degradation, are not uniquely susceptible to pollution, according to a new meta-analysis.
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martes, 1 de diciembre de 2009
WWF, Allianze estimate what it could cost NOT to take action on climate change
A new report from the World Wildlife Fund and European insurance giant Allianz SE says that close to $1.4 trillion in “assets” could be at risk from a severe storm surge. Moreover, by mid-century, their joint study predicts that up to $7.4 trillion could be in jeopardy if the global sea level rises 20 inches.
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jueves, 26 de noviembre de 2009
Robotic clam digs in mudflats
ScienceDaily (2009-11-25) -- To design a lightweight anchor that can dig itself in to hold small underwater submersibles, Anette Hosoi of MIT borrowed techniques from one of nature's best diggers -- the razor clam.
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Organizational psychologists use Rock Band to study how people achieve flow while at work
ScienceDaily (2009-11-25) -- Using the video game Rock Band, organizational psychologists have found that -- like Goldilocks -- most people achieve flow with work that is neither too easy nor too hard but just right.
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'No muss, no fuss' miniaturized analysis for complex samples developed
ScienceDaily (2009-11-25) -- Researchers have created a novel and simple way to analyze samples that are complex mixtures -- such as whole milk, blood serum and dirt in solution -- by adapting a new separation technique called gradient elution moving boundary electrophoresis.
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Butterfly proboscis to sip cells
ScienceDaily (2009-11-25) -- A butterfly's proboscis looks like a straw -- long, slender and used for sipping -- but it works more like a paper towel, according to researchers. They hope to borrow the tricks of this piece of insect anatomy to make small probes that can sample the fluid inside of cells.
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Fat around the middle increases the risk of dementia
ScienceDaily (2009-11-25) -- Women who store fat on their waist in middle age are more than twice as likely to develop dementia when they get older, reveals a new study.
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Hydrogen-economy on the way? New hydrogen-storage method discovered
ScienceDaily (2009-11-25) -- Scientists have found for the first time that high pressure can be used to make a unique hydrogen-storage material. The discovery paves the way for a new approach to the hydrogen-storage problem. The researchers found that the normally nonreactive, noble gas xenon combines with molecular hydrogen under pressure to form a previously unknown solid with unusual bonding chemistry. The discovery debuts a new family of materials, which could boost hydrogen technologies.
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Yoga boosts heart health, new research finds
ScienceDaily (2009-11-25) -- Heart rate variability, a sign of a healthy heart, has been shown to be higher in yoga practitioners than in non-practitioners, according to new research.
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How coughing is triggered by environmental irritants
ScienceDaily (2009-11-25) -- Scientists have revealed how environmental irritants such as air pollution and cigarette smoke cause people to cough. The authors of a new study have identified the reaction inside the lungs that can trigger coughing when a person is exposed to particular irritants in the air. They suggest that their findings may ultimately lead to the development of new treatments for chronic coughing.
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America's increasing food waste is laying waste to the environment
ScienceDaily (2009-11-25) -- Food waste contributes to excess consumption of freshwater and fossil fuels which, along with methane and carbon dioxide emissions from decomposing food, impacts global climate change. Scientists have calculated the energy content of nationwide food waste from the difference between the US food supply and the food eaten by the population.
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Eye floaters and flashes of light linked to retinal tear, detachment
ScienceDaily (2009-11-25) -- Suddenly seeing floaters or flashes of light may indicate a serious eye problem that -- if untreated -- could lead to blindness, a new study shows.
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Soy component may be key to fighting colon cancer
ScienceDaily (2009-11-25) -- Scientists have identified a new class of therapeutic agents found naturally in soy that can prevent and possibly treat colon cancer, the third most deadly form of cancer. Sphingadienes are natural lipid molecules found in soy that research shows may be the key to fighting colon cancer.
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Magic box for mission impossible
ScienceDaily (2009-11-25) -- For rescuers working in remote places working phones and Internet are literally a question of life and death. A team of researchers and businesses in Norway, Spain and Finland decided they need to be equipped with a box with the power to connect them to networks wherever they are.
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High-tech origami: Water droplets direct self-assembly process in thin-film materials
ScienceDaily (2009-11-25) -- Researchers have developed a technique for fabricating 3-D, single-crystalline silicon structures from thin films by coupling photolithography and a self-folding process driven by capillary interactions.
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'Safety valve' protects photosynthesis from too much light
ScienceDaily (2009-11-25) -- Photosynthetic organisms need to cope with a wide range of light intensities, which can change over timescales of seconds to minutes. Too much light can damage the photosynthetic machinery and cause cell death. Scientists have found that specific proteins in algae can act as a safety valve to dissipate excess absorbed light energy before it can wreak havoc in cells.
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You Say Po-TAY-to, And I Say Pot-AAH-to! Language Evolves Through Our Own Use Of It
ScienceDaily (2009-11-26) -- Change in language can be compared with evolution in the world of animals and plants. According to a Dutch researcher, an individual user of language can spark off an evolution of his or her language. His new approach, comparing linguistic change with evolution, offers a number of advantages for the study of linguistic change.
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Evolution of highly toxic box jellyfish unraveled
ScienceDaily (2009-11-26) -- With thousands of stinging cells that can emit deadly venom from tentacles that can reach ten feet in length, the 50 or so species of box jellyfish have long been of interest to scientists and to the public. Yet little has been known about the evolution of this early branch in the animal tree of life. Researchers have now unraveled the evolutionary relationships among the various species of box jellyfish, thereby providing insight into the evolution of their toxicity.
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When you eat may be just as vital to your health as what you eat
ScienceDaily (2009-11-26) -- When you eat may be just as vital to your health as what you eat, found researchers. New experiments in mice revealed that the daily waxing and waning of thousands of genes in the liver -- the body's metabolic clearinghouse -- is mostly controlled by food intake and not by the body's circadian clock as conventional wisdom had it.
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Brains Benefit From Multilingualism
ScienceDaily (2009-11-26) -- For a considerable time already there has been discussion within scientific circles about whether knowing and using multiple languages could possibly have positive effects on the human brain and thinking. There have been a number of international studies on the subject, which indicate that the ability to use more than one language brings an individual a considerable advantage.
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miércoles, 25 de noviembre de 2009
Pelvic Floor Muscle Exercises Can Help Manage Urinary Incontinence In Older Women
ScienceDaily (2009-11-24) -- Researchers have found that a program of pelvic floor muscle exercises, combined with pelvic health education, can be an effective way to manage urinary incontinence in elderly women.
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Rescuing male turkey chicks
ScienceDaily (2009-11-24) -- A novel approach to classify the gender of six-week-old turkey poults could save millions of male chicks from being killed shortly after birth, according to researchers. Their use of infrared spectroscopy to determine the gender of young birds shows that it is a fast and accurate method.
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Is global warming unstoppable?
ScienceDaily (2009-11-24) -- In a provocative new study, a scientist argues that rising carbon dioxide emissions -- the major cause of global warming -- cannot be stabilized unless the world's economy collapses or society builds the equivalent of one new nuclear power plant each day.
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MorphologyNet.org -- Biologist, Computer Scientist Make 3D Anatomy Images Available Online
ScienceDaily () -- Frog biology is especially noteworthy because of the amphibians' sensitivity to pollution, which often flags previously unknown environmental problems. Science labs and classrooms around the world can now get inside frogs, slice them up, and rotate 3D images of their organs on MorphologyNet.org, a new online resource produced by a biologist and a computer scientist. The Web site also contains models of fish, reptiles, birds and mammals. Researchers will be able to share images across continents and limit the samples of endangered species that are destroyed in the research process.
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Killer fungus threatening amphibians
ScienceDaily (2009-11-24) -- Amphibians like frogs and toads have existed for 360 million years and survived when the dinosaurs didn't, but a new aquatic fungus is threatening to make many of them extinct, according to a new article.
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Cuitlahuac
Gene implicated in stress-induced high blood pressure
ScienceDaily (2009-11-24) -- Do stressful situations make your blood pressure rise? If so, your phosducin gene could be to blame according to new research that indicates a role for the protein generated by the phosducin gene in modulating blood pressure in response to stress in both mice and humans.
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Cuitlahuac
martes, 24 de noviembre de 2009
The search: Computers dig deeper for meaning
ScienceDaily (2009-11-23) -- Search engine technology is in a state of flux as it digs ever deeper for new meaning.
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Cuitlahuac
Hard training may reduce fertility in women
ScienceDaily (2009-11-23) -- Are you a female athlete -- or just someone who likes challenging workouts -- who also wants to get pregnant? It may make sense to ease off a bit as you try to get pregnant. New research shows that the body may not have enough energy to support both hard workouts and getting pregnant.
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Some germs are good for you: Surface bacteria maintain skin's healthy balance
ScienceDaily (2009-11-23) -- On the skin's surface, bacteria are abundant, diverse and constant, but inflammation is undesirable. New research now shows that the normal bacteria living on the skin surface trigger a pathway that prevents excessive inflammation after injury.
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Children who suffer physical or emotional abuse may be faced with accelerated cellular aging as adults
ScienceDaily (2009-11-23) -- Researchers have determined that children who suffer physical or emotional abuse may be faced with accelerated cellular aging as adults.
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Deep-sea world beyond sunlight: Explorers census 17,650 ocean species on edge of black abyss
ScienceDaily (2009-11-23) -- Scientists have inventoried an astonishing abundance, diversity and distribution of deep sea species that have never known sunlight -- creatures that somehow manage a living in a frigid black world down to 5000 meters (three miles) below the ocean waves.
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Sea stars bulk up to beat the heat
ScienceDaily (2009-11-23) -- A new study finds that a species of sea star stays cool using a strategy never before seen in the animal kingdom. The sea stars soak up cold sea water into their bodies during high tide as buffer against potentially damaging temperatures brought about by direct sunlight at low tide.
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Climate modeling may have missed something: Aquatic creatures mix ocean water by swimming
ScienceDaily (2009-11-23) -- Understanding mixing in the ocean is of fundamental importance to modeling climate change or predicting the effects of an El Niño on our weather. Modern ocean models primarily incorporate the effects of winds and tides. However, they do not generally take into account the mixing generated by swimming animals.
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How the brain filters out distracting thoughts to focus on a single bit of information
ScienceDaily (2009-11-23) -- Researchers in Norway have discovered a mechanism that the brain uses to filter out distracting thoughts to focus on a single bit of information.
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Marine Life Stirs Ocean Enough To Affect Climate, Study Says
ScienceDaily (2006-10-15) -- Oceanographers worldwide pay close attention to phytoplankton and with good reason. The microscopic plants that form the vast foundation of the marine food chain generate a staggering amount of power, and now a groundbreaking study led by Florida State University in Tallahassee, Fla., has calculated just how much ---- about five times the annual total power consumption of the human world.
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Jellyfish And Other Small Sea Creatures Linked To Large-scale Ocean Mixing
ScienceDaily (2009-07-29) -- Using a combination of theoretical modeling, energy calculations, and field observations, researchers have for the first time described a mechanism that explains how some of the ocean's tiniest swimming animals can have a huge impact on large-scale ocean mixing.
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Satellites Spot Mighty Mississippi -- In The Atlantic
ScienceDaily (2005-09-19) -- Scientists using satellite imagery found that at least 23 percent of the water released from the mouth of the Mississippi River from July through September 2004 traveled quite a distance - into the Gulf of Mexico, around the Florida Keys, and into the Atlantic Ocean.
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Earth From Space: Bloom In The Baltic
ScienceDaily (2005-08-03) -- A colourful summer marine phytoplankton bloom fills much of the Baltic Sea in a new Envisat image. Phytoplankton are microscopic marine plants that drift on or near the surface of the sea, by far the most abundant type of life found in the ocean. Just like plants on land they employ green-pigmented chlorophyll for photosynthesis - the process of turning sunlight into chemical energy.
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New wound dressing, full of antibiotics, dissolves when wound has healed
ScienceDaily (2009-11-23) -- Scientists have developed a new wound dressing, based on innovative fibers that can be loaded with antibiotics, then dissolve when the healing process is completed.
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Cuitlahuac
lunes, 23 de noviembre de 2009
Scientists find molecular trigger that helps prevent aging and disease
ScienceDaily (2009-11-23) -- Researchers set out to address a question that has been challenging scientists for years: How does dietary restriction produce protective effects against aging and disease? And the reverse: how does overconsumption accelerate age-related disease? An answer lies in a worm study that examines how the two ends of the spectrum influence biochemical responses.
Cuitlahuac
viernes, 20 de noviembre de 2009
When East meets West: Why consumers turn to alternative medicine
ScienceDaily (2009-11-20) -- Alternative health remedies are increasingly important in the health care marketplace. A new study explores how consumers choose among the many available remedies.
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Cuitlahuac
Building the smart home wirelessly
ScienceDaily (2009-11-19) -- Like the paperless office, the smart home has been a long time coming, but a new article suggests that radio tags coupled with mobile communications devices could soon provide seamless multimedia services to the home.
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Cuitlahuac
Lyme disease vaccine? Tick saliva found to protect mice from Lyme disease
ScienceDaily (2009-11-19) -- A protein found in the saliva of ticks helps protect mice from developing Lyme disease, researchers have discovered. The findings may spur development of a new vaccine against infection from Lyme disease, which is spread through tick bites.
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Studies suggest males have more personality
ScienceDaily (2009-11-19) -- Males have more pronounced personalities than females across a range of species -- from humans to house sparrows -- according to new research. Consistent personality traits, such as aggression and daring, are also more important to females when looking for a mate than they are to males. A new article draws together a range of studies to reveal the role that sexual selection plays in this disparity between males and females.
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Cuitlahuac
Cousins of prehistoric supercrocodile inhabit lost world of Sahara
ScienceDaily (2009-11-19) -- Fossils of five ancient crocs, including one with teeth like boar tusks and another with a snout like a duck's bill, have been discovered in the Sahara. The five crocs, three of them newly named species, were part of the bizarre world of crocs that inhabited the southern land mass known as Gondwana some 100 million years ago.
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Surgeon 'glues' the breastbone together after open-heart surgery
ScienceDaily (2009-11-19) -- An innovative method is being used to repair the breastbone after it is intentionally broken to provide access to the heart during open-heart surgery. The technique uses a state-of-the-art adhesive that rapidly bonds to bone and accelerates the recovery process. This procedure has been performed on over 20 patients as part of a pilot study. Doctors aim to apply the technique in over 500 patients across the globe over the next 12-24 months.
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Baby's sleep position is the major factor in 'flat-headedness'
ScienceDaily (2009-11-19) -- A baby's sleep position is the best predictor of a misshapen skull condition known as deformational plagiocephaly -- or the development of flat spots on an infant's head -- according to a new article.
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'Hobbits' are a new human species, according to statistical analysis of fossils
ScienceDaily (2009-11-19) -- Researchers have confirmed that Homo floresiensis is a genuine ancient human species and not a descendant of healthy humans dwarfed by disease. Using statistical analysis on skeletal remains of a well-preserved female specimen, researchers determined the "hobbit" to be a distinct species and not a genetically flawed version of modern humans.
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Accidental discovery produces durable new blue pigment for multiple applications
ScienceDaily (2009-11-19) -- An accidental discovery has apparently solved a quest that over thousands of years has absorbed the energies of ancient Egyptians, the Han dynasty in China, Mayan cultures and more -- the creation of a near-perfect blue pigment.
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Centuries-old Maya Blue Mystery Finally Solved
ScienceDaily (2008-02-28) -- Anthropologists have discovered how the ancient Maya produced an unusual, widely studied blue pigment that was used in offerings, pottery, murals and other contexts across Mesoamerica from A.D. 300 to 1500. Production of the renowned, extremely stable pigment was part of ritual sacrifices at Chichén Itzá.
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Is 80-year-old mistake leading to first species to be fished to extinction?
ScienceDaily (2009-11-19) -- A species of common skate is to become the first marine fish species to be driven to extinction by commercial fishing, due to an error of species classification 80 years ago.
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Oceans' uptake of human-made carbon may be slowing
ScienceDaily (2009-11-19) -- The oceans play a key role in regulating climate, absorbing more than a quarter of the carbon dioxide that humans put into the air. Now, the first year-by-year accounting of this mechanism during the industrial era suggests the oceans are struggling to keep up with rising emissions -- a finding with potentially wide implications for future climate.
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Cuitlahuac
jueves, 12 de noviembre de 2009
Avatars Can Surreptitiously And Negatively Affect User In Video Games, Virtual Worlds
ScienceDaily (2009-11-11) -- Although often seen as an inconsequential feature of digital technologies, one's self-representation, or avatar, in a virtual environment can affect the user's thoughts, according to new research.
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Star Trek-like Replicator? Electron Beam Device Makes Metal Parts, One Layer At A Time
ScienceDaily (2009-11-11) -- A group of engineers working on a novel manufacturing technique at NASA's Langley Research Center in Hampton, Va., have come up with a new twist on the popular old saying about dreaming and doing: "If you can slice it, we can build it." That's because layers mean everything to the environmentally-friendly construction process called Electron Beam Freeform Fabrication, or EBF3, and its operation sounds like something straight out of science fiction.
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Cuitlahuac
Skunk's Strategy Not Just Black And White
ScienceDaily (2009-11-11) -- Predators with experience of skunks avoid them both because of their black-and-white coloration and their distinctive body shape, a new study has found.
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Foreign Subtitles Improve Speech Perception
ScienceDaily (2009-11-11) -- You can improve your second-language listening ability by watching the movie with subtitles -- as long as these subtitles are in the same language as the film. Subtitles in one's native language, the default in some European countries, may actually be counter-productive to learning to understand foreign speech, according to a new study.
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Cuitlahuac
Why Nice Guys Usually Get The Girls
ScienceDaily (2009-11-11) -- For the insects called water striders, the pushiest guys don't always get the girls. New research provides support for the theory of multi-level selection and contradicts previous laboratory experiments that suggested that the most aggressive males are the most successful at reproducing.
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miércoles, 11 de noviembre de 2009
Embryonic Stem Cell Therapy Restores Walking Ability In Rats With Neck Injuries
ScienceDaily (2009-11-10) -- The first human embryonic stem cell treatment approved by the FDA for human testing has been shown to restore limb function in rats with neck spinal cord injuries -- a finding that could expand the clinical trial to include people with cervical damage.
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Cuitlahuac
Antarctica Glacier Retreat Creates New Carbon Dioxide Store; Has Beneficial Impact On Climate Change
ScienceDaily (2009-11-10) -- Large blooms of tiny marine plants called phytoplankton are flourishing in areas of open water left exposed by the recent and rapid melting of ice shelves and glaciers around the Antarctic Peninsula. This remarkable colonization is having a beneficial impact on climate change. As the blooms die back phytoplankton sinks to the sea-bed where it can store carbon for thousands or millions of years.
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Pain In The Neck: Too Much Texting Could Lead To Overuse Injuries
ScienceDaily (2009-11-10) -- College age students text the most, preferring it to calls or e-mail. However, new research is suggesting that the copious amounts of texting could lead to overuse injuries -- once only reserved for older adults who have spent years in front of a computer.
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Cell Phones Become Handheld Tools For Global Development
ScienceDaily (2009-11-11) -- Computer scientists are using Android, the open-source mobile operating system championed by Google, to transform a cell phone into a flexible data-collection tool. Their free suite of tools, named Open Data Kit, is already used by organizations around the world that need inexpensive ways to gather information in areas with little infrastructure.
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Cuitlahuac
Controversial New Climate Change Data: Is Earth's Capacity To Absorb CO2 Much Greater Than Expected?
ScienceDaily (2009-11-11) -- New data show that the balance between the airborne and the absorbed fraction of carbon dioxide has stayed approximately constant since 1850, despite emissions of CO2 having risen from about 2 billion tons a year in 1850 to 35 billion tons a year now. This suggests that terrestrial ecosystems and the oceans have a much greater capacity to absorb CO2 than had been previously expected.
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Cuitlahuac
martes, 10 de noviembre de 2009
Blood Test Identifies Women At Risk From Alzheimer's
ScienceDaily (2009-11-09) -- Middle-aged women with high levels of a specific amino acid in their blood are twice as likely to suffer from Alzheimer's many years later, reveals new research from Sweden. This discovery this could lead to a new and simple way of determining who is at risk long before there are any signs of the illness.
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Cuitlahuac
Why Do Animals, Especially Males, Have So Many Different Colors?
ScienceDaily (2009-11-09) -- Why do so many animal species -- including fish, birds and insects -- display such rich diversity in coloration and other traits? New research offers an answer.
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Organ Regeneration In Zebrafish: Unraveling The Mechanisms
ScienceDaily (2009-11-10) -- The search for the holy grail of regenerative medicine -- the ability to "grow back" a perfect body part when one is lost to injury or disease -- has been under way for years, yet the steps involved in this seemingly magic process are still poorly understood. Now researchers have identified an essential cellular pathway in zebrafish that paves the way for limb regeneration by unlocking gene expression patterns last seen during embryonic development.
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Cuitlahuac
lunes, 9 de noviembre de 2009
For Improving Early Literacy, Reading Comics Is No Child's Play
ScienceDaily (2009-11-06) -- A professor of library and information science says that comic books are just as sophisticated as other forms of literature, and children benefit from reading them at least as much as they do from reading other types of books.
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Seafloor Fossils Provide Clues To Climate Change
ScienceDaily (2009-11-08) -- Deep under the sea, a fossil the size of a sand grain is nestled among a billion of its closest dead relatives. Known as foraminifera, these complex little shells of calcium carbonate can tell you the sea level, temperature, and ocean conditions of Earth millions of years ago. That is, if you know what to look for.
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Cuitlahuac
viernes, 6 de noviembre de 2009
A bad mood can help you think more clearly
A recent Australian study has found that being sad has positive side effects, including making people less gullible, improving the ability to judge others and boosting memory.
Creating Cultured Pearls From The Queen Conch: Scientists Unlock Mystery
ScienceDaily (2009-11-05) -- In their natural form, conch pearls are among the rarest pearls in the world. For more than 25 years, all attempts at culturing pearls from the queen conch have been unsuccessful -- until now. For the first time, novel and proprietary seeding techniques to produce beaded and non-beaded high-quality cultured pearls from the queen conch have been developed by scientists.
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Paleoecologists Offer New Insight Into How Climate Change Will Affect Organisms
ScienceDaily (2009-11-05) -- New research examines some of the potential problems with current prediction methods and calls for the use of a range of approaches when predicting the impact of climate change on organisms. The study uses examples from recent paleoecological studies to highlight how climate variability of the past has affected the distributions of tree species, and even how events that occurred many centuries ago still shape present-day distributions patterns.
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Chart Junk? How Pictures May Help Make Graphs Better
ScienceDaily (2009-11-05) -- Those oft-maligned, and highly embellished, graphs and charts in newspapers may actually help people understand data more effectively than traditional graphs, according to new research.
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Cuitlahuac
Green Tea Shows Promise As Chemoprevention Agent For Oral Cancer
ScienceDaily (2009-11-05) -- Green tea extract has shown promise as cancer prevention agent for oral cancer in patients with a pre-malignant condition known as oral leukoplakia, according to researchers.
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Cuitlahuac
Babies' Language Learning Starts From The Womb
ScienceDaily (2009-11-05) -- From their very first days, newborns' cries already bear the mark of the language their parents speak, reveals a new study. The findings suggest that infants begin picking up elements of what will be their first language in the womb, and certainly long before their first babble or coo.
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Parents Just Don't Understand: Role Of Parental Control In Western And East Asian Countries
ScienceDaily (2009-11-06) -- Recent studies investigating the question of parental control in the west and in east Asian countries suggest that extreme meddling by parents can have negative effects on their children's psychological development in both of those regions, although the effects may not be uniform.
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