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Sunday, March 27, 2011

ScienceDaily Health Headlines -- for the Week of March 20 to March 27, 2011

ScienceDaily Health Headlines

for the Week of March 20 to March 27, 2011

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Posted 2011-03-26:

Living at high altitude reduces risk of dying from heart disease: Low oxygen may spur genes to create blood vessels
Supervised weight training safe for pregnant women, study suggests
Tourettes brains are structured for greater, not lesser, cognitive motor control
Neuroscientists decode crucial component in brain signal processing
HIV integration requires use of a host DNA-repair pathway
'Simulated' needles just as effective as real acupuncture in treating nausea in cancer patients, study finds

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ScienceDaily Technology Headlines -- for Sunday, March 27, 2011

ScienceDaily Technology Headlines

for Sunday, March 27, 2011

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

New instrument keeps an 'eye' on nanoparticles (March 26, 2011) -- Scientists have developed a new instrument capable of detecting individual nanoparticles with diameters as small as a few tens of nanometers. ... > full story

Universal property of music discovered (March 25, 2011) -- Researchers have discovered a universal property of scales. Until now it was assumed that the only thing scales throughout the world have in common is the octave. The many hundreds of scales, however, seem to possess a deeper commonality: if their tones are compared in a two- or three-dimensional way by means of a coordinate system, they form convex or star-convex structures. Convex structures are patterns without indentations or holes, such as a circle, square or oval. ... > full story

BrainGate neural interface system reaches 1,000-day performance milestone (March 25, 2011) -- An investigational implanted system being developed to translate brain signals toward control of assistive devices has allowed a woman with paralysis to accurately control a computer cursor at 2.7 years after implantation, providing a key demonstration that neural activity can be read out and converted into action for an unprecedented length of time. ... > full story

Exploding stars and stripes: Pattern of X-ray 'stripes' in supernova remnant could explain how cosmic rays are produced (March 25, 2011) -- The discovery of a pattern of X-ray "stripes" in the remains of an exploded star may provide the first direct evidence that a cosmic event can accelerate particles to energies a hundred times higher than achieved by the most powerful particle accelerator on Earth. This result comes from a very long observation of the Tycho supernova remnant with NASA's Chandra X-ray Observatory. It could explain how some of the extremely energetic particles bombarding Earth, called cosmic rays, are produced. ... > full story

Conch shell gives nano insights into composite materials (March 25, 2011) -- Researchers use the conch shell as an example of 'toughness-by-architecture' in the quest for new synthetic materials for engineering, construction and aerospace applications. ... > full story

First student-developed mission in which satellites orbit and communicate (March 25, 2011) -- Two satellites designed and constructed by engineering students in Texas successfully separated in space March 22, completing the most crucial goal of the mission since its Nov. 19 launch and making them the first student-developed mission in the world in which satellites orbit and communicate with each other in real-time. ... > full story

Matter spotted a millisecond from black hole -- but is it really doomed? (March 25, 2011) -- The European Space Agency's Integral gamma-ray observatory has spotted extremely hot matter just a millisecond before it plunges into the oblivion of a black hole. But is it really doomed? These unique observations suggest that some of the matter may be making a great escape. ... > full story

In vivo systems biology: Using computer models, systems biologists can predict complicated behavior of cells in living animals (March 25, 2011) -- Researchers report that they have created a new computational model that describes how intestinal cells in mice respond to a natural chemical called tumor necrosis factor (TNF). ... > full story

High-temperature superconductor spills secret: A new phase of matter? (March 25, 2011) -- Scientists have found the strongest evidence yet that a puzzling gap in the electronic structures of some high-temperature superconductors could indicate a new phase of matter. Understanding this "pseudogap" has been a 20-year quest for researchers who are trying to control and improve these breakthrough materials, with the ultimate goal of finding superconductors that operate at room temperature. ... > full story

Suzaku shows clearest picture yet of Perseus Galaxy Cluster (March 24, 2011) -- X-ray observations made by the Suzaku observatory provide the clearest picture to date of the size, mass and chemical content of a nearby cluster of galaxies. The study also provides the first direct evidence that million-degree gas clouds are tightly gathered in the cluster's outskirts. ... > full story

New model predicts the optical properties of nano-structures (March 24, 2011) -- Chemists have developed a new model to predict the optical properties of non-conducting ultra-fine particles. ... > full story

Robot-assisted prostate surgery is safe, long-term study finds (March 24, 2011) -- In the first study of its kind, urologists and biostatisticians have found that robot-assisted surgery to remove cancerous prostate glands is safe over the long term, with a major complication rate of less than one percent. The findings follow an earlier Henry Ford study that found nearly 87 percent of patients whose cancerous prostates were removed by robot-assisted surgery had no recurrence of the disease after five years. ... > full story

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ScienceDaily Top Science Headlines -- for the Week of March 20 to March 27, 2011

ScienceDaily Top Science Headlines

for the Week of March 20 to March 27, 2011

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

Posted 2011-03-26:

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ScienceDaily Health Headlines -- for Sunday, March 27, 2011

ScienceDaily Health Headlines

for Sunday, March 27, 2011

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

Living at high altitude reduces risk of dying from heart disease: Low oxygen may spur genes to create blood vessels (March 26, 2011) -- Researchers have found that people living at higher altitudes have a lower chance of dying from heart disease and live longer. ... > full story

Supervised weight training safe for pregnant women, study suggests (March 26, 2011) -- Despite decades of doctors' reluctance to recommend weight training to pregnant women, a new study has found that a supervised, low-to-moderate intensity program is safe and beneficial. ... > full story

Tourettes brains are structured for greater, not lesser, cognitive motor control (March 26, 2011) -- Contrary to intuition, people who suffer from the motor and vocal tics characteristic of Tourette syndrome actually perform behavioral tests of cognitive motor control more accurately and quickly than their typically developing peers do. According to a new study, that enhanced control arises from structural and functional changes in the brain that likely come about from the need to constantly suppress tics. ... > full story

Neuroscientists decode crucial component in brain signal processing (March 26, 2011) -- A team of Neuroscientists from NeuroCure Cluster of Excellence at Charité – Universitätsmedizin Berlin and Baylor College of Medicine in Houston, Texas, have made a major breakthrough in understanding how signals are processed in the human brain. ... > full story

HIV integration requires use of a host DNA-repair pathway (March 26, 2011) -- The human immunodeficiency virus, the cause of AIDS, makes use of the base excision repair pathway when inserting its DNA into the host-cell genome, according to a new study. The research shows that crippling the repair pathway prevents the virus from completing this critical step in its life cycle. The findings offer potential new targets for novel anti-HIV drugs that may not lead as quickly to viral resistance as current drugs, the researchers say. ... > full story

'Simulated' needles just as effective as real acupuncture in treating nausea in cancer patients, study finds (March 26, 2011) -- Simulated acupuncture -- sometimes referred to as placebo -- is just as beneficial as real acupuncture for treating nausea in cancer patients undergoing radiotherapy, according to a study by researchers in Sweden. Patients, who received only standard care including medications for nausea, felt significant more nausea than patients in both the acupuncture groups. ... > full story

New colon cancer marker identified (March 25, 2011) -- A research team has identified an enzyme that could be used to diagnose colon cancer earlier. It is possible that this enzyme also could be a key to stopping the cancer. ... > full story

Promising clue to mechanism behind gene mutation that causes Parkinson's disease (March 25, 2011) -- Researchers have discovered a way that mutations in a gene called LRRK2 may cause the most common inherited form of Parkinson's disease. The study, published online this month in the journal Public Library of Science, shows that upon specific modification called phosphorylation, LRRK2 protein binds to a family of proteins called 14-3-3, which has a regulatory function inside cells. ... > full story

How well do you know your friends? (March 25, 2011) -- How does your best friend feel when people act needy? Or, about people being dishonest? What do they think when others seem uncomfortable in social situations? If you don't know -- your relationship may pay a price. ... > full story

A safer, more effective morphine may soon be possible (March 25, 2011) -- An orphan drug originally used for HIV treatment has been found to short-circuit the process that results in additional sensitivity and pain from opioid use. ... > full story

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ScienceDaily Top Science Headlines -- for Sunday, March 27, 2011

ScienceDaily Top Science Headlines

for Sunday, March 27, 2011

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

Antarctic icebergs play a previously unknown role in global carbon cycle, climate (March 26, 2011) -- In a finding that has global implications for climate research, scientists have discovered that when icebergs cool and dilute the seas through which they pass for days, they also raise chlorophyll levels in the water that may in turn increase carbon dioxide absorption in the Southern Ocean. ... > full story

Maquipucuna cloud forest in Ecuador yields new species of yeast (March 26, 2011) -- A new species of yeast has been discovered growing on the fruit of an unidentified and innocuous bramble collected from the biodiversity-rich Maquipucuna cloud forest nature reserve, near Quito, in Ecuador. ... > full story

Algae, bacteria hogged oxygen after ancient mass extinction, slowed marine life recovery (March 26, 2011) -- After the biggest mass extinction in Earth's history -- 250 million years ago -- algae and bacteria in the ocean rebounded so fast that they consumed virtually all the oxygen in the sea, slowing the recovery of the rest of marine animals for several million years. ... > full story

Bats keep separate households (March 26, 2011) -- The use of different environments by males and females in the parti-colored bat makes population estimation and thereby the conservation of the species more difficult. The use of different resources by males and females exacerbates the estimation of population sizes. However, the monitoring of population sizes, particularly for rare and threatened species, is pivotal to quick and effective conservation action. Scientists have now investigated the ecological niches of male and female parti-colored bats (Vespertilio murinus) and found out that the sexes use entirely different foraging grounds. With their results they can show that a finer grained view of what different demographic subsets of species do is essential for correct estimation of population trends with important implications on action plans for conservation. ... > full story

Inclusive fitness theory defended (March 26, 2011) -- In 1964, biologist William Hamilton introduced Inclusive Fitness Theory to predict and explain phenomena ranging from animal behavior to patterns of gene expression. With its many successes, the theory became a cornerstone for modern biology. In August 2010, researchers challenged the theory in the journal Nature. Now Nature has published sharp rebuttals from scores of scientists. ... > full story

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