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Tag: "finds" at biology news

Tiny particles could solve billion-dollar problem

...er for Biological and Environmental Nanotechnology finds that nanoparticles of gold and palladium are the most effective catalysts yet identified for remediation of one of the nation's most pervasive and troublesome groundwater pollutants, trichloroethene or TCE. The research, conducted by engineers at Ri...

Study shows nanoshells ideal as chemical nanosensors

... the Proceedings of the National Academy ofScience finds that tailored nanoparticles known as nanoshells canenhance chemical sensing by as much as 10 billion times. That makesthem about 10,000 times more effective at Raman scattering thantraditional methods. Whenmolecules and materials scatter light, a sm...

Tiny scaffolding allows stem cells to become working fat cells

...that the environment in which a community of cells finds itself has a great deal of influence on the biology underway within those cells," Kniss said. "And that biology is always translated into changes in gene expression and assemblies of proteins." That is why the three-dimensional scaffolding for cell g...

Iron exporter revealed that may explain common human disorder

...dren's Hospital Boston and Harvard Medical School, finds that the protein ferroportin is the major, if not the only, iron exporter that functions in key sites of iron absorption and release in the body. The findings suggest that the iron accumulation seen in those with hemochromatosis may stem from a loss ...

Insight into DNA's 'weakest links' may yield clues to cancer biology

...h by geneticists at Duke University Medical Center finds that yeast cells also contain such weak links in DNA and begins to reveal the molecular characteristics of these links that might help to explain them. The findings, published in the March 11, 2005, issue of Cell, suggest that yeast may offer a usef...

Designing vaccines by computer

...usands of sequences now available. When the search finds something promising it can be experimentally tested to see if it will trigger a response. Dr Darren Flower, an international leader in this work, said, "A crucial feature of this search strategy is that we don't have to know what a foreign protein a...

Roundup®highly lethal to amphibians, finds University of Pittsburgh researcher

...hed today by a University of Pittsburgh researcher finds that the chemical may be eradicating much more than that. Pitt assistant professor of biology Rick Relyea found that Roundup®, the second most commonly applied herbicide in the United States, is "extremely lethal" to amphibians. This field experimen...

Study of energy and health in Africa focuses spotlight on charcoal and forest management

... Berkeley, and the Harvard School of Public Health finds that promoting cleaner, more efficient technologies for producing charcoal in Africa can save millions of lives and have significant climate change and development benefits. The African continent, as well as many developing nations in Asia and Latin...

UN: World in big ecological mess

... Although evidence remains incomplete, the report finds enough to warn that ongoing degradation of 15 of the 24 ecosystem services examined ?including fresh water, capture fisheries, air and water regulation, and regulation of regional climate, natural hazards and pests ?increases the likelihood of potent...

Revueltosaurus skeleton unearthed at Petrified Forest upsets dinosaur tale

...University of California. Parker's initial fossil finds were crocodilian-like armor, but he didn't realize they were from Revueltosaurus until the next day, when he brought a colleague to the site and she picked up a jaw with teeth. During May and June of 2004, Parker, Irmis and their coauthors excavated ...

Agilent Technologies introduces high-capacity human protein removal system for proteomics research

...University of California. Parker's initial fossil finds were crocodilian-like armor, but he didn't realize they were from Revueltosaurus until the next day, when he brought a colleague to the site and she picked up a jaw with teeth. During May and June of 2004, Parker, Irmis and their coauthors excavated ...

Scientists take aim at virulent bacteria by decoding machinery of key control enzyme

...has allowed them to observe exactly how the enzyme finds its target on bacterial DNA. The Dam enzyme begin... examining each base pair as it goes. Each time it finds the sequence GATC it stops and methylates the A nucleotide. Dam must move quickly, because if the ba...

Study: Harmless virus kills some cancers

...with a helper virus in order to replicate. When it finds a helper virus, such as HPV, AAV2 disrupts the life cycle of the host and induces apoptosis, a type of cell death. "Even without co-mingling with another virus, AAV2 seems to be able to infect and express itself in other types of cancer cells also d...

Endocannabinoids ?the brain's cannabis ?demonstrate novel modes of action to stress

...oendocrine function during stress." Japanese team finds inhibition of excitatory and inhibitory synaptic transmission In an in vitro study, a multi-center Japanese team led by Atsushi Soya focused on the supraoptic nucleus (SON) where vasopressin and oxytocin are synthesized. They found that a synthesize...

Study: Predatory dinosaurs had bird-like pulmonary system

...keleton in areas such as the neck, chest and hips, finds similarities between the vertebral column of dinosaurs and birds that point to a common soft tissue system as the culprit. Though probably not identical to living birds, "it's nothing like the crocodile system as we know it," O'Connor said. "The pul...

When in danger humans are similar to a deer in the headlights

...redator. A new study published in Psychophysiology finds that humans, like many other complex animals, freeze when encountering a threat. The mere picture of an injured or mutilated human induces this reaction. When viewing these unpleasant images, the study's participants froze as their heart rate deceler...

Virtual animal shelters ?How the Internet is transforming the experience of pet adoptions

...nd effect on the process of dog adoption." Garcia finds that the descriptive online ads can educate potential owners about endearing traits, such as one ad that described a "Velcro lap dog." Other communications can narrow the selection process on the Internet by suggesting that the pet would be better su...

Lactose intolerance linked to ancestral environment

...ey can't digest it. A new Cornell University study finds that it is primarily people whose ancestors came from places where dairy herds could be raised safely and economically, such as in Europe, who have developed the ability to digest milk. On the other hand, most adults whose ancestors lived in very ho...

Drugs from the deep blue

...gineering techniques, Molinski said. One of their finds is phorboxazole, made by an Indian Ocean sponge collected by Molinski's team off the coast of Western Australia. Phorboxazole A is a potent toxin that in the laboratory, can inhibit the growth of a wide range of tumor cell types even at very low conc...

The making of a fat cell

...etabolic control, the researchers said. The study finds that a hormonal cocktail routinely used in the lab induces a key genetic switch in the transition from fat-cell precursors to full-blown fat, researchers at University of Michigan Life Sciences Institute report in the September Cell Metabolism. "The...

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