Tuesday, November 19, 2013

FeedaMail: ScienceDaily: Most Popular News

feedamail.com ScienceDaily: Most Popular News

New approach to identify possible ecological effects of releasing genetically engineered insects

Researchers have developed a new approach for identifying potential environmental effects of deliberate releases of genetically engineered insects.

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Low-fat fish oil changes cancer tissue in prostate cancer, study shows

Men with prostate cancer who ate a low-fat diet and took fish oil supplements had lower levels of pro-inflammatory substances in their blood and a lower cell cycle progression score, a measure used to predict cancer recurrence, than men who ate a typical Western diet, researchers found.

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Refined materials provide booster shot for solar energy conversion

Researchers have set their sights on improving the materials that make solar energy conversion/photocatalysis possible. Together, they have developed a new form of high-performance solar photocatalyst based on the combination of the titanium dioxide and other "metallic" oxides that greatly enhance the visible light absorption and promote more efficient utilization of the solar spectrum for energy applications.

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New 5-D method to understand big data

Scientists have developed a new method to display large amounts of data in a color-coded, easy-to-read graph. Neuroscientists originally designed the method to interpret enormous amounts of data derived from their research on the human brain. The method, called a five dimensional (5D) colorimetric technique, is able to graph spatiotemporal data (data that includes both space and time), which has not previously been achieved. Until now, spatiotemporal problems were analyzed either from a spatial perspective or from a time-based approach.

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A superconductor-surrogate earns its stripes

Understanding superconductivity -- whereby certain materials can conduct electricity without any loss of energy -- has proved to be one of the most persistent problems in modern physics. Now scientists have teased out another important tangle from this giant ball of string, bringing us a significant step closer to understanding how high-temperature superconductors work their magic.

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Optimizing electronic correlations for superconductivity

Researchers find that electrons teetering on the edge of free motion or stuck in place yield optimal superconductivity. Their work explains common characteristics between two different superconducting iron compounds and may help in the search for better "high-temperature" superconductors.

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Pressure cooking to improve electric car batteries

Researchers have redesigned the component materials of the battery in an environmentally friendly way to solve some of the problems associated with electric car batteries. By creating nanoparticles with a controlled shape, they believe smaller, more powerful and energy efficient batteries can be built.

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The big male nose: Why men's noses are bigger than women's

Why are men's noses bigger than women's? The answer, according to a new study lies in our physiology. Men's noses are about 10 percent larger than female noses, on average, because males have more lean muscle mass, which requires more oxygen for muscle tissue growth and maintenance. It also explains why we have smaller noses than our ancestors.

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Researchers use simple scaling theory to better predict gas production in barnett shale wells

Researchers have developed a simple scaling theory to estimate gas production from hydraulically fractured wells in the Barnett Shale. The method is intended to help the energy industry accurately identify low- and high-producing horizontal wells, as well as accurately predict how long it will take for gas reserves to deplete in the wells.

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Bacteria recycle broken DNA: Modern bacteria can add DNA from creatures long-dead to its own

From a bacteria's perspective the environment is one big DNA waste yard. Researchers have now shown that bacteria can take up small as well as large pieces of old DNA from this scrapheap and include it in their own genome. This discovery may have major consequences – both in connection with resistance to antibiotics in hospitals and in our perception of the evolution of life itself.

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Promiscuous mouse moms bear sexier sons

Biologists found that when mother mice compete socially for mates in a promiscuous environment, their sons play hard and die young. They attract more females by making more urinary pheromones, but smelling sexier shortens their lives.

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Texting heart medication reminders improved patient adherence

Getting reminder texts helped patients take their heart medicines (anti-platelet and cholesterol-lowering drugs) more regularly, according to research.

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Being an elite male athlete protects against type 2 diabetes in later life

A study of almost 400 former elite male athletes shows that former status as an elite athlete reduces the risk of developing type 2 diabetes in later life by 28 percent.

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In pandemic, parents who get reminders more likely to get kids vaccinated

A new study found that the state immunization registry -- the public health database that tracks vaccinations -- can be an effective tool to encourage influenza vaccinations during a pandemic.

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Depression in pregnancy: New study shows preferences for therapy over medication

Women with depression in the perinatal period experience a high degree of conflict in deciding whether and how to treat their depression, but strongly prefer treatments other than antidepressant medications, reports a study.

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Renal stenting does not improve outcomes for renal artery stenosis patients

According to the findings from an American national research trial, people who suffer from a narrowing of the arteries that lead to the kidneys, or renal artery stenosis, do not experience better outcomes when renal stenting is used. Instead, a comprehensive regimen of drug and medical therapies works just as well.

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Statin use not linked to a decline in cognitive function

Based on the largest comprehensive systematic review to date, researchers concluded that available evidence does not support an association between statins and memory loss or dementia.

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Canadians' foreign policy priority: Climate change

Canadians do not share the federal government's opinion when it comes to the fight against climate change. Canada should work more closely with other countries to address this issue, according to 63% of the participants in a new survey.

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Study reveals potential breakthrough in hearing technology

Computer engineers and hearing scientists have made a potential breakthrough in solving a 50-year-old problem in hearing technology: how to help the hearing-impaired understand speech in the midst of background noise.

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Global carbon emissions set to reach record 36 billion tons in 2013

Global emissions of carbon dioxide from burning fossil fuels are set to rise again in 2013, reaching a record high of 36 billion tons - according to new figures from the Global Carbon Project. The biggest contributors to fossil fuel emissions in 2012 were China (27 per cent), the United States (14 per cent), the European Union (10 per cent), and India (6 per cent). The projected rise for 2013 comes after a similar rise of 2.2 per cent in 2012.

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Biologists find an evolutionary Facebook for monkeys and apes

Why do the faces of primates contain so many different colors, including black, blue, red, orange and white, mixed in all kinds of combinations, and often striking patterns? Biologists report on the faces of 139 African and Asian primate species that have been diversifying over some 25 million years.

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Genome scale view of great white shark uncovers unexpected and distinctive features

A new study undertakes the first large-scale exploration of the great white shark's genetic repertoire, and comes up with unexpected findings.

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Liberals aren't like the rest, or so they think

Liberals tend to underestimate the amount of actual agreement among those who share their ideology, while conservatives tend to overestimate intra-group agreement, according to new research.

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A fresh step towards quantum computing

Scientists have developed a method to manipulate magnetism in atoms. This research makes it possible to drive forward the exploration of new methods of information storage and computation on an atomic scale.

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New study helps predict life expectancy using complete blood count risk score

For years, doctors have been divided on how effective annual testing and screenings are for apparently healthy individuals. New research, however, shows that a simple blood test may predict who is at highest risk to develop heart problems – and how long these people may have to live.

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'Magic numbers' disappear and expand area of nuclear deformation

Scientists have demonstrated that the magic numbers 20 and 28 disappear from all neutron-rich magnesium isotopes, thereby establishing a new, larger area of nuclear deformation in the nuclear chart.

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Chaotic physics in ferroelectrics hints at brain-like computing

Unexpected behavior in ferroelectric materials supports a new approach to information storage and processing. After studying patterns of domain formation under varying conditions, the researchers realized the complex behavior could be explained through chaos theory.

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High cost of cardiac surgery healthcare associated infections

After cardiac surgery, healthcare-associated infections (HAIs) are common complications associated with increased morbidity, mortality, and use of resources. New study findings reveal the substantial economic impact of HAIs following cardiac surgery and the importance of preventing these infections leading to re-hospitalizations.

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Novel study charts aggressive prostate cancer

Many patients diagnosed with prostate cancer have indolent, slow-growing forms of the disease that are not life-threatening. However, more than 30,000 American men will die from aggressive prostate cancer this year. This sharp contrast between low-risk and aggressive disease presents a challenge for many researchers and physicians. Investigators have made extensive progress in understanding the molecular mechanisms of disease progression.

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Effects of LEDs on leaf lettuce: Mixture of blue and red lights recommended to enhance lettuce quality, yield

Scientists determined the effects of blue and red LED ratios on leaf shape, plant growth, and the accumulation of antioxidant phenolic compounds of a red leaf lettuce and a green leaf lettuce cultivar. They determined that red LED light promoted growth and that blue LED light was good for phenolics accumulation rather than growth, thus concluding that a combination of red and blue light is essential for cultivation of leafy vegetables like lettuce.

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Preterm birth risk increases for pregnant women exposed to phthalates

The odds of preterm delivery appear to increase for pregnant women exposed to phthalates, chemicals people are exposed to through contaminated food and water and in a variety of products including lotions, perfumes and deodorants, according to a study.

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Drinking more milk as a teenager does not lower risk of hip fracture later

Drinking more milk as a teenager apparently does not lower the risk of hip fracture as an older adult and instead appears to increase that risk for men, according to a study.

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Two studies on the use of breast MRI

The overall use of breast magnetic resonance imaging has increased, with the procedure most commonly used for diagnostic evaluations and screenings, according to a study.

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Medication adherence after hospitalization for acute coronary syndrome

Patients better adhered to their medication regimens in the year following hospitalization for acute coronary syndrome when they were part of a program that included personalized attention from a pharmacist compared with usual care, according to a study.

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New technique controls dimensions of gold nanorods while manufacturing on a large scale

Researchers have developed a technique for efficiently producing nanoscale gold rods in large quantities while simultaneously controlling the dimensions of the nanorods and their optical properties. The optical properties of gold nanorods make them desirable for use in biomedical applications ranging from imaging technologies to cancer treatment.

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Recreating the history of life through the genome

One of the most important processes in the life of cells is genome replication. In most organisms genome replication follows a set plan, in which certain regions of the genome replicate before others; alterations in the late replication phases had previously been related to cancer and aging. Now, scientists have, for the first time related this process to evolution of life.

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For anxious children and teens, context counts

Researchers have shown that teenagers with anxiety disorders show increased activity in a specific part of the brain, the medial prefrontal cortex (mPFC), when they are interpreting a neutral situation negatively. Ultimately, the mPFC may serve as a biomarker for illness.

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Protein regulates burning of body fat

Body fat contains a small number of brown adipose cells -- special fat cells that generate heat without muscle activity. They do this using a protein known as UCP1 that enables babies or hibernating animals to keep warm without shivering. A research team has found that a specific chemical compound can activate UCP1 under certain conditions, and that could also trigger fat burning.

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Innovative vaccine trains immune system to fight melanoma

Melanoma patients are now being enrolled in the first clinical trial in the Midwest of an experimental vaccine that trains a patient's immune system to fight the deadly cancer.

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Rural, southern regions lack annual training in CPR

Annual rates of CPR training in the United States are low and vary widely across the country, but the communities most in need of training are the least likely to be trained, according to a new study.

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Study finds similar outcomes for repair or replacement of damaged heart valves

New research has found no difference in outcomes at one-year between two recommended surgical options for treating ischemic mitral regurgitation -- repair of the leaky valve or its replacement with an artificial valve.

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Staying on medication may not translate to avoiding readmission

A targeted effort to help high-risk heart failure patients stay on their medications did improve adherence to drug regimens, but had surprisingly little effect lowering hospital readmission rates, according to a study.

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Texting your way to weight loss

Tracking information on diet and exercise habits through text messages could save time and improve the likelihood of people sticking with their get-healthy routine, say researchers.

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Control malaria by segmenting sleeping arrangements

Better malaria control might come from segregating household sleeping arrangements, according to a new study. The researchers found malaria eradication related more to household size than to a country's wealth or temperature. They found that when average household size drops below four persons, malaria extermination is much more likely. "When we controlled for all the variables, the factor that had the most explanatory power on malaria control was household size," said Prof. Ross McKitrick.

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New genetic risk factor discovered for severe psychiatric illness

Investigators have discovered a new genetic risk factor for schizophrenia and bipolar disorder called NDST3.

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Technique developed to convert thermoelectric material into high performance electricity

Physicists have developed a novel technique of tailoring thermoelectric properties of n-type bismuth telluride for high thermoelectric performance.

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Fruit bat population covering central Africa carries two deadly viruses

A population of fruit bats which is found across much of continental Africa is widely infected with two deadly viruses that could spread to humans, new research reveals.

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Asteroids' close encounters with Mars: Mars, not Earth, shakes up some near-Earth asteroids

For nearly as long as astronomers have been able to observe asteroids, a question has gone unanswered: Why do the surfaces of most asteroids appear redder than meteorites -- the remnants of asteroids that have crashed to Earth?

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Origin of species: Protein imbalances doom hybrids

Why do crosses between closely related species fail to produce fertile hybrids? A new study shows that differences in the levels - not necessarily the sequences - of certain key proteins are crucial in mediating reproductive isolation. Two individuals are defined as belonging to the same biological species, if matings between them give rise to viable and fertile offspring. Crosses between closely related, but already distinct, species produce hybrid offspring that are either inviable or sterile, and thus cannot give rise to a self-propagating hybrid lineage.

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Obesity a major risk factor in developing basal-like breast cancer

Women who are obese face an increased risk of developing an aggressive sub-type of breast cancer known as 'basal-like', according to research.

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Preschoolers can learn lasting heart-healthy lessons from Sesame Street

Preschoolers can learn about healthy eating and exercise through Sesame Street. In a study, preschoolers in Bogotá, Colombia participating in a structured curriculum that used Sesame Street's Healthy Habits for Life materials improved their knowledge, attitudes and habits related to a heart-healthy lifestyle. Also, the percentage of children at a healthy weight improved by 13 percent.

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Bacteria use lethal cytotoxins to evade antibiotic treatment

Bacteria that cause infectious diseases produce a number of cytotoxins, and an international research team has now found the mechanism behind one of these toxins. The new results could make it possible in future to develop new treatment methods to impair the cytotoxic activity and thereby reduce the severity of infectious diseases.

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Scientists fingerprint single cancer cells to map cancer's family tree

Scientists have used a DNA sequencing technique to identify mutations present across thousands of cancer cells in three patients with leukemia. The technique can identify the founding mutations from which a tumor evolved, and uses computer software to map the cancer's family tree. The findings could be used to identify the key mutations that occur early in a tumor's development, allowing doctors to use targeted treatments more effectively.

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Non-specialist health workers play important role in improving mental health in developing countries

Non-specialist health workers are beneficial in providing treatment for people with mental, neurological and substance-abuse problems in developing countries -- where there is often a lack of mental health professionals.

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Teens who drink alone more likely to develop alcohol problems as young adults

Most teenagers who drink alcohol do so with their friends in social settings, but a new study reveals that a significant number of adolescents consume alcohol while they are alone. Furthermore, solitary teenage drinkers are more likely to develop alcohol use disorders in early adulthood.

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Boredom research has now become more interesting

Being bored has just become a little more nuanced, with the addition of a fifth type of boredom by which to describe this emotion. Researchers provide insight into how boredom is experienced in everyday life. The study is among the first to quantifiably investigate different types of boredom.

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Multilevel study finds no link between minimum wage, crime rates

A new study is a unique examination into whether public policy on the minimum wage can affect the crime rate in the US.

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Manipulation of protein could help stop spread of cancer cells

Understanding how and why cancer cells move away from their original location is important to find ways to stop the spread of the disease. New findings reveal how a protein, called "PRH," is normally able to prevent cells from unnecessary migration. It is likely that this protein is less effective in cancer cells allowing the cells to venture away.

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More than skin deep: New layer to the body's fight against infection

The layers of skin that form the first line of defense in the body's fight against infection have revealed a unanticipated secret. The single cell type that was thought to be behind the skin's immune defense has been found to have a doppelganger, with researchers showing the cells, despite appearing identical, are actually two different types.

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Monkeys can point to objects they do not report seeing

Are monkeys, like humans, able to ascertain where objects are located without much more than a sideways glance? Quite likely, says the lead author of a new study. The study finds that monkeys are able to localize stimuli they do not perceive.

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People with highly superior powers of recall also vulnerable to false memories

People who can accurately remember details of their daily lives going back decades are as susceptible as everyone else to forming fake memories, psychologists and neurobiologists have found.

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