Tag: "stretching" at biology news

UC Berkeley chemists detail secrets of ionization, reasons behind water's central role in chemistry of life

... one valley to another would be like a strong rope stretching over the peaks. To find the easiest trajectory over the ridge to the desired valley, it's quicker to throw ropes over the passes and, learning from your mistakes, narrow the possibilities, than to randomly try all possible ways to scale the ridges. "...

World's biggest study of hormone replacement therapy

...d's biggest and longest randomised clinical trial, stretching over 22 years and involving 36,000 women internationally. The Medical Research Council in the UK has already awarded more than $1 million to the Adelaide research team, with a further $10 million to follow. The team is headed by Associate Professor ...

Cadmium toxicity threatening wildlife in Rocky Mountains

... study focused on an expansive section of Colorado stretching from Denver and Fort Collins to Durango known as an "ore belt." Larison, who has returned to the OSU faculty, said abandoned mines throughout this area have "exacerbated the problem." Though cadmium is natural to the area, he pointed out, mining tend...

Genetic cause of lymphedema discovered by University of Pittsburgh researchers reported in Nature Genetics

...fluid. An intricate series of fine tubes and nodes stretching throughout the body, the lymph system performs the mundane but critical task of mopping up excess fluid as well as molecules and cells that stray from nearby blood vessels. As with other organs, development of the lymph system is tightly regulated. ...

Chemical from venom of Chilean tarantula could aid treatment of heart attack, other major diseases

...brane -- called stretch-activated channels because stretching the membrane causes them to open and close -- have...that process. We also know from earlier work that stretching the heart can initiate fibrillation. If we can block the stretch-activated channels, we may be able...

Rapid size change in introduced fruit fly indicates it is evolving as it invades North America

...obscura is a temperate-zone fly native to a region stretching from Spain northward into southern Scandinavia and from North Africa eastward to the Middle East. In South America, it was first found near the Chilean port city of Puerto Montt in 1978. The flies quickly colonized much of coastal Chile, although sc...

Evidence of bacterial life found in deepest-yet Antarctic ice-core

...ctic ice cores provide a continuous climate record stretching back more than 400,000 years. Obtaining sediment samples from the bottom of Lake Vostok could extend the climate record to cover millions of years. Both Karl and Priscu receive research funding from the National Science Foundation. Karl's group in...

Bacteria may thrive in Antarctic lake

...have helped scientists assemble a climate record stretching back more than 400,000 years. Sediment samples from the bottom of Lake Vostok could extend that record to cover millions of years. "There are other, compelling reasons to go into the lake," Karl concluded....

Primitive primate makes the case for Asian anthropoid origins

... could mean that theanthropoid group has its roots stretching far back into time, possibly even intothe late Paleocene (58-55 million years ago). Pinpointing the anthropoid ancestor's arrival on the evolutionary scene isimportant, but it doesn't quite solve the mystery of the ancestor's identity,lurking somewhe...

New MIT probe gathers data for better polymers

... given formulation works. The new probe combines a stretching device with the electronics for nuclearmagnetic re...which deformation--and motions--have ceased." The stretching device and polymer sample, inside a tube about 3 feet long by 3inches in diameter, are placed within...

Study: calcium channels regulate cell movement

...aid. "As soon as the rear ofthe cell retracts, the stretching is released, the calcium channels close andthe level of calcium drops back." Over brief periods, the channels become less responsive to stretching,an adaptation that prevents them from being flooded with calcium that is presentin concentratio...

SIDS prevention tactic leads to epidemic of 'misshapen head' in infants

...o helmet therapybegan simultaneously with the neck stretching exercises and repositioningtechniques. The corrective helmet is designed to "remold" the head to a natural,oval shape, and therapy usually continues for four months. Babies quickly adaptto wearing the helmet, which is ventilated with holes to allow ...

Agronomists offer alternative approaches to gulf pollution

...ge as thestate of New Jersey (7,000 square miles), stretching from the mouth of theMississippi River to the Texas coastline. The hypoxic zone doesn't kill large fish and sea mammals, because they areable to swim away to oxygenated water. Less mobile sea life, such as starfish,sea anemones and crustaceans...

Did Fur Trappers Trigger Landscape Changes?

...s Falls Watershed, a network ofstreams andwetlands stretching from a semi-rural area northwest of the city to heavilypopulated inner cityneighborhoods. Her findings could help public officials plan future developmentsthat minimizeecological damage. "The purpose of this study is to help people become aware ofand...

Mechanism Of Protein Folding Unraveled, With Eventual Implications For Treating Diseases Caused By Folding Errors

...eal intermediates, but simplyrepresent the protein stretching and pulling in the denaturing solution used inthe experiment. The researchers made two copies of thesame amino-acid chain, one that couldn't fold and one that could, and observedthat both versions displayed the same initial ultra-fast burst of optica...

Johns Hopkins Scientists Designing Compounds To Fight Malaria

...aging, Posner said. Malaria is a menace in regions stretching from Africa to theCaribbean islands, and from Central America to Asia and India.The disease is spread by a genus of mosquitos called Anopheles,which pick up the parasite when they bite an infected person. Theinsects then transmit infected blood to ot...

Fossils Show British Columbia Was Once 2,000 Miles South

...e slipped its way north along agiant crustal fault stretching from California to British Columbia. However,critics say, there is no evidence of such a fault. The UW researcher believesthe fault is certainly extinct, and because it is buried deep in the Earth'scrust, it may never be detected. Ward also ...

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