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Tag: "wave" at biology news

Discovery of key protein's shape could lead to improved bacterial pneumonia vaccine

...opy and circular dishroism (CD). NMRcombines radio wave emissions and a powerful magnetic field todetermine the structure of proteins suspended in solutions, while CDmeasures differences in the absorption of different types of polarizedlight by molecules to determine their shape. It also can show how that...

New comparative toxicogenomics database

...opy and circular dishroism (CD). NMRcombines radio wave emissions and a powerful magnetic field todetermine the structure of proteins suspended in solutions, while CDmeasures differences in the absorption of different types of polarizedlight by molecules to determine their shape. It also can show how that...

Research Gives Hope For Liver Damage

...ophages causes scarring to the liver, but the next wave ofimmune cells, produced only a few days later, change function to breakdown and reabsorb the scarring. These findings, published in theJanuary edition of Journal of Clinical Investigation, will help doctorsto understand the mechanisms by which the l...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...d and fled to higher ground before the devastating wave struck, thus saving their own lives and those of the tourists riding on their backs. Because earthquakes and tsunamis generate low-frequency waves, O'Connell-Rodwell and other elephant experts have begun to explore the possibility that the Thai eleph...

Protein helps regulate the genes of embryonic stem cells

...research offers an important contribution to a new wave of thinking in genetics: that not all human disease states are due to alterations in DNA sequence. Dr. Terry Magnuson - Sarah Graham Kenan professor, chairman of genetics and director of the Carolina Center for Genome Sciences in UNC's School of Medi...

Nature provides inspiration for important new adhesive

...ke this protein so they can cling to rocks despite wave forces," Li said. "It's quite remarkable, just an incredibly unique natural feature." The mussel protein is a superior adhesive, but not readily available. In trying to identify a protein that could be adapted for this purpose, Li had another inspir...

Tamoxifen-like drug suggests new ways to selectively block estrogen

...uch as this should lead to the emergence of "a new wave of estrogen receptor modulators with improved specificity. We are moving, he said, "very close to the day where a proteomic profile of a tumor will determine the best SERM or SERD or other endocrine therapy that will yield maximal benefit in the clin...

Researchers reveal secrets of flying snakes

...f the animal's body. He found that body length and wave amplitude are important predictors of flight behavior, but wave frequency was not. "These high-amplitude undulations visually dominate the behavior, yet their freq...

New law for resolution allows unprecedented sharpness in fluorescence microscopy

...ving cells non-invasively. However, because of the wave nature of light, focused light is subject to diffraction. As early as 1873, Ernst Abbe recognized that this fact imposes an absolute limit on resolution in microscopy. Abbe, whose 100th year death anniversary was in February, captured this limit in a...

Solution to 'legionella'

...pression of the gases dissolved in the water. This wave front produces a luminous plasma around the bubbles, as well as high pressure and temperatures. These pressures and temperatures have two effects: on the one hand, they eliminate the circulating bacteria and, on the other, they generate an oxidative...

New results validating Pall prion reduction filter disclosed at ISBT Congress

...can accurately determine the magnitude of the next wave of an outbreak. Nor do we know how many people may be harboring the infectious prions and also donating blood," Ross explained. "Our goal is to work with blood authorities across Europe and then North America to help them integrate this new measure o...

Biologist Discovers What May Be World’s ‘Pickiest?Mates

...hands “The California fiddler crabs use a lateral wave that looks much like a human beckoning 'come here??deRivera said. “It also seems to serve as a 'come hither' signal, as a male waves, standing at his burrow entrance, and interested females come over.?/p> Interested females initially eye the male...

Oysters: The natural way to protect our shores

... six experimental shell reefs on both low and high wave energy shorelines in coastal Louisiana. The areas...ll reefs were effective in slowing erosion for low wave energy shorelines, though less effective in higher wave energy environments. The authors conclude ...

HIV drug resistance increasing in UK and among highest in the world

...anywhere in the world, prompting fears of a second wave epidemic of resistant virus, a new study claims in this week's BMJ. The study authors are concerned that the large reductions in deaths and improvements to health since people with HIV were given combinations of drugs (combination antiretroviral the...

Worms know bad food when they smell it

... made them sick in the past is enough to trigger a wave of nausea ?and to prevent them from eating that fo...flavor in the future. The smell elicits an instant wave of nausea." That aversion is triggered by signals that the olfactory system sends to the brain. Simi...

Penn researchers study the use of ultrasound for treatment of cancer

...d perfusion and then to treat it with a continuous wave of low-level ultrasound. After three minutes of treatment at an intensity similar to what is used in physiotherapy ultrasound (about 2.5 watts), researchers observed that the tumors had little or no blood supply. "We used an ultrasound intensity hig...

Study shows AIDS drugs cost-effective, care underfunded

... meet. As they begin to retire, where will the new wave of physicians come from to replace them?" A commentary accompanying the HIV expenditure article, by Kenneth Mayer, MD, and Sreekanth Chaguturu, MD, of Miriam Hospital and Brown University, says the article "demonstrates some good news and some worri...

Dogs keep dying: Many owners unaware of toxic dog food

... identified aflatoxin as the culprit in the recent wave of deaths. Trying to save dogs Over the recent holiday weeks, Center and her staff worked around-the-clock to try to save the 17 poisoned dogs admitted to Cornell's Hospital for Animals. "I've been working with liver disease in dogs for 30 years...

Engineered heart tissue offers insights into irregular heartbeats, defibrillator failure

...es. "In the beginning, there is a single rotating wave -- the 'culture dish' analog of ventricular tachyc...e this wave." The pulses successfully halted the wave 80 percent of the time, they reported. In the remaining cases, however, the pulses converted the sin...

Study finds 60 new genes controlled by DNA snippet

...be as important to medical science as genes. A new wave of research is concerned with, not how genes work, but how small regulatory DNA sequences tell genes where, when and to what degree to "turn on." As part of this effort, researchers at the University of Rochester Medical Center scanned through the va...

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