Friday, August 9, 2013

FeedaMail: ScienceDaily: Most Popular News

feedamail.com ScienceDaily: Most Popular News

Robot treats brain clots with steerable needles

Surgery to relieve the damaging pressure caused by hemorrhaging in the brain is a perfect job for a robot. That is the basic premise of a new image-guided surgical system under development.

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Views you can use? How online ratings affect your judgment

Positive comments create an illusory snowball effect, while negative responses get cancelled out.

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Muscle health depends on sugar superstructure

Scientists have pinpointed not just one, but three proteins that are required for constructing a key, early section of a critical sugar chain. Mutations affecting any one of these three proteins can cause congenital muscular dystrophies in humans.

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Atomic clock can simulate quantum magnetism

Researchers have for the first time used an atomic clock as a quantum simulator, mimicking the behavior of a different, more complex quantum system. All but the smallest, most trivial quantum systems are too complicated to simulate on classical computers, hence the interest in quantum simulators to understand the quantum mechanical behavior of exotic materials such as high-temperature superconductors.

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Investigational malaria vaccine found safe and protective

An investigational malaria vaccine has been found to be safe, to generate an immune system response, and to offer protection against malaria infection in healthy adults, according to new results.

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Human activity muddies causes of Texas floods

Periodic flooding in Texas —- one the most flood-prone states in the U.S. —- cannot be firmly linked to climate change due to numerous dams and other humanmade structures introduced over the years, according to a new article.

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Atomic insights into plant growth: How plant steroid hormone makes plants grow

If one wants to better understand how plants grow, one must analyse the chemistry of life in its molecular detail. Scientists are doing just that. New work reveals that a plant membrane receptor requires a helper protein to sense a growth-promoting steroid hormone and to transduce this signal across the cell membrane.

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Study shows MicroRNAs can trigger lymphomas

A small group of immune-regulating molecules, when overproduced even moderately, can trigger the blood cancers known as lymphomas, according to a new study.

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New tools to organize information-overload threatening neuroscience

Before the digital age, neuroscientists got their information in the library like the rest of us. But the field's explosion has created nearly 2 million papers -- more data than any researcher can read and absorb in a lifetime.

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Human epigenomic map extended

New research describes the dynamics of DNA methylation across a wide range of human cell types. Chemically, these marks are the addition of a methyl group -- one carbon atom surrounded by three hydrogen atoms -- anywhere a cytosine nucleotide sits next to a guanine nucleotide in the DNA sequence.

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Table coral, Acropora cytherea, discovered off O'ahu in Hawaii

Scientists report the discovery of the first known colony of table coral off of the south shore of O'ahu in Hawai'i.

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A path to better MTV-MOFs: Best method for predicting adsorption in carbon dioxide-scrubbing materials

Researchers have developed a method for accurately predicting the ability of MTV-MOFs (multivariate metal organic frameworks) to scrub carbon dioxide from the exhaust gases of fossil fuel power plants.

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High lifetime costs for type 2 diabetes

A person with type 2 diabetes spends on average more than $85,000 treating the disease and its complications over their lifetime, according to a recent study.

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Chemists' work will aid drug design to target cancer and inflammatory disease

Chemists have produced detailed descriptions of the structure and molecular properties of human folate receptor proteins, a key development for designing new drugs that can target cancer and inflammatory diseases without serious side effects.

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A powerful strategy for developing microbial cell factories by employing synthetic small RNAs

Scientists have reported the development of a strategy for efficiently developing microbial cell factories by employing synthetic small RNAs.

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Latino genomes point way to hidden DNA

Researchers have discovered the hiding place of 20 million base pairs of human genome sequence, finding a home for 10 percent of the DNA that is thought to be missing from the standard reference map of the human genome.

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Genetic evidence shows recent population mixture in India

Researchers have found that modern-day India is the result of recent population mixture among divergent demographic groups.

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Do fish feel pain? Not as humans do, study suggests

Fish do not feel pain the way humans do, according to a team of neurobiologists, behavioral ecologists and fishery scientists. The researchers conclude that fish do not have the neuro-physiological capacity for a conscious awareness of pain.

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Capturing live tumor cells in the blood

Tumor cells circulating within a patient's bloodstream can carry cancer from a primary tumor site to distant sites of the body, spreading the disease. Now researchers have developed a new microfluidic chip that can quickly and efficiently segregate and capture live circulating tumor cells (CTCs) from a patient's blood, with potential applications for cancer screenings and treatment assessments.

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Visualization tool helps researchers see their data like never before

Making sense of the ever-increasing mounds of data is one of the great challenges facing researchers today. Staff and students in a university information technology department have come up with an approach to help researchers gain a new perspective on their data.

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Kids born small should get moving

Female mice who were growth restricted in the womb were born at a lower birth weight, but were less active and prone to obesity as adults, said researchers.

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Three-decade decline in reflectivity of Arctic sea ice

The reflectivity of Arctic sea ice, or albedo, regulates the solar radiation balance. A diminishing albedo affects the melt rate of Arctic sea ice.

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Heart pump with behind-the-ear power connector

Researchers are studying the efficacy of powering heart pumps through a skull-based connector behind the ear. Typically, these devices are energized through an electrical cord connected at an abdominal site, where potentially deadly infections can develop.

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Key piece of RNA-splicing machinery revealed: Little elongation complex

A little-studied factor known as the Little Elongation Complex (LEC) plays a critical and previously unknown role in the transcription of small nuclear RNAs (snRNA), according to a new study.

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Neurocognitive testing more accurate than self-reporting when assessing concussion recovery in cheerleaders

Concussions have become a major public health issue, with both short- and long-term side effects.  In sports, cheerleading has the highest rate of catastrophic injury, with some studies reporting approximately 6% of total injuries as concussions.  Return-to-play guidelines have relied on athletes' self-reports; however, this has led to concerns about the ability of athletes to truly recognize their own symptoms and recovery.  In a new study researchers evaluate the accuracy of neurocognitive testing compared with self-reported symptoms of concussions in cheerleaders. 

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Narrower range of helpful bacteria in guts of C-section infants

The range of helpful bacteria in the guts of infants delivered by Cesarean section, during their first two years of life, is narrower than that of infants delivered vaginally, indicates a small study.

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Rheumatoid arthritis heightens risk of dangerous leg and lung blood clots

Rheumatoid arthritis significantly increases the risk of potentially fatal blood clots in the legs and lungs, reveals a large nationwide study.

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Study casts doubt on theory that retired NFL players suffer unique cognitive disorder

The media have widely reported that retired NFL players are at risk for chronic traumatic encephalopathy, which causes aggression, depression, dementia and suicidality. But a study of retired NFL players finds no evidence to support this theory.

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Cell maturity pathway is deleted or weak in glioblastoma multiforme

A program that pushes immature cells to grow up and fulfill their destiny as useful, dedicated cells is short-circuited in the most common and deadly form of brain tumor, scientists say.

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New NASA mission to help us learn how to mine asteroids

Over the last hundred years, the human population has exploded from about 1.5 billion to more than seven billion, driving an ever-increasing demand for resources. To satisfy civilization's appetite, communities have expanded recycling efforts while mine operators must explore forbidding frontiers to seek out new deposits, opening mines miles underground or even at the bottom of the ocean.

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Scientists visualize how cancer chromosome abnormalities form in living cells

For the first time, scientists have directly observed events that lead to the formation of a chromosome abnormality that is often found in cancer cells. The abnormality, called a translocation, occurs when part of a chromosome breaks off and becomes attached to another chromosome.

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How to achieve a well-balanced gut: 'Peacekeeper' in the gut identified

Creating an environment that nurtures the trillions of beneficial microbes in our gut and, at the same time, protects us against invasion by food-borne pathogens is a challenge. A new study reveals the role of a key player in this balancing act.

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Deep Earth heat surprise

Researchers have for the first time experimentally mimicked the pressure conditions of Earths' deep mantle to measure thermal conductivity using a new measurement technique on the mantle material magnesium oxide. They found that heat transfer is lower than other predictions, with total heat flow across the Earth of about 10.4 terawatts, about 60 percent of the power used today by civilization. They also found that conductivity has less dependence on pressure conditions than predicted.

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Bubbles are the new lenses for nanoscale light beams

Bending light beams to your whim sounds like a job for a wizard or an a complex array of bulky mirrors, lenses and prisms, but a few tiny liquid bubbles may be all that is necessary to open the doors for next-generation, high-speed circuits and displays, according to researchers.

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Low childhood conscientiousness predicts adult obesity

Results from a longitudinal study show that children who exhibit lower conscientiousness (e.g., irresponsible, careless, not persevering) could experience worse overall health, including greater obesity, as adults. The study examines the relationship between childhood personality and adult health and shows a strong association between childhood conscientiousness (organized, dependable, self-disciplined) and health status in adulthood.

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How parents see themselves may affect their child's brain and stress level

A mother's perceived social status predicts her child's brain development and stress indicators, finds a new study -- the first to link brain function to maternal self-perception. Children in the study, whose mothers saw themselves as having a low social status were more likely to have increased cortisol levels, (stress indicator), and less activation of their hippocampus, (structure in the brain responsible for long-term memory formation, required for learning) and reducing stress responses.

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Cells eat themselves into shape

To quickly smooth out their surface, cells in the fruit fly embryo 'suck in' long tubes of membrane in a specialized type of endocytosis, scientists have found. The study could help explain how the cells on your skin become different from those that line your stomach or intestine.

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Gene variations may help predict cancer treatment response

Researchers have identified four inherited genetic variants in non-small cell lung cancer patients that can help predict survival and treatment response. Their findings could help lead to more personalized treatment options and improved outcomes for patients.

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Autism affects different parts of the brain in women and men

Autism affects different parts of the brain in females with autism than males with autism, a new study reveals.

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Helper cells aptly named in battle with invading pathogens

By tracking the previously unknown movements of a set of specialized cells, scientists are shedding new light on how the immune system mounts a successful defense against hostile, ever-changing invaders.

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