Tag: "harmed" at biology news

USGS Says Central Columbia Plateau Water Quality Impaired by Agriculture, But Some Good News

...used for drinking water in this area, but fish are harmed by decreased stream-water quality," said Mark Munn, the biologist for the USGS study. "Pesticides and habitat degradation are the main concerns." He noted that stream sampling by the USGS showed seven currently used pesticides at concentrations above...

What Paul and Pamela don't know: Medical breakthroughs at risk

...arch in California and across the country has been harmed bythe opposition of animal rights groups. Celebrities--and the public--will be urged to make the connection between animalresearch and the ongoing work of scientists to improve our health andwell-being....

USGS fire research in the southeast

...hey were goodecologically. No endemic species were harmed by the fires, and Grace's surveyshave revealed larger populations and expanded ranges of a number of threatenedflowers and grasses. One native shrub species, the Rugels pawpaw, increased from only 200 individualsbefore the wildfires to more than...

USGS studies wildfire ecology in the western United States

...trol. The absence of a regular fire cycle has also harmed many plant and animal species whose life histories are tightly linked to fire disturbance. Across regions and among different forest types, the historical role of fire and the effects of recent fire suppression vary. And while fire suppression h...

Yale scientists find evidence healthy animals detect and avoid sick animals

...use behavior to reduce the chancethat they will be harmed or die."...

University of Pittsburgh researchers uncover mitochondrial defect involved with inherited cancers

.... Baysal. "Most cells, and most cancer cells, are harmed by low oxygen. Low oxygen normally causes cells to self-destruct. In some cancer cells, however, the mechanism for cell death is turned off. These cells reproduce under the difficult conditions brought on by low oxygen levels. The result is that ...

NIH awards UCSF $12 million in new national effort to learn how genes affect people's repsonses to medicines

...h the same condition remain unaffected or are even harmed by the drug. The four-year UCSF study involves laboratory and clinical research to determine how natural genetic variation affects the performance of human proteins known as membrane transporters which act as cellular gatekeepers, controlling whether...

Florida scientist finds eight new snails that may give water quality clues

...turally pristine spring or creek that has not been harmed by environmental threats. "It would not take much of a disturbance to hurt these snails," he said. "If you went back to that same place later and did not find them, you would have serious cause to worry that something terrible had happened." ...

Experimental microbeam radiation therapy may offer improvement over traditional radiation treatments

...dose that can be tolerated before normal tissue is harmed with the lowest dose needed to destroy tumors. If it can be established that normal tissues tolerate microbeam doses above what is needed to destroy tumors -- i.e., if the ratio of these doses is higher than that for conventional broad-beam radiation...

Global consortium announces plans to sequence banana genome

...micals used on bananas for diseases and pests have harmed the health of plantation workers and the environment. "If we can devise resistant banana varieties, we could possibly do away with fungicides and pesticides all together," said Frison. "In addition, resistant strains are essential for small-holde...

Digital organisms used to confirm evolutionary process

...this allows its offspring to avoid being seriously harmed by mutations. "Theory predicts that genomes that have evolved at a high mutation rate will have become more robust to the harmful effects of mutations than genomes that have evolved at a low mutation rate," said Lenski, MSU Hannah Professor of Micro...

The true encroacher, human or alligator?

...sons were allowed. These hunting seasons have not harmed robust population levels. A portion of the proceeds from the hunting permits fund scientific research on this animal. As hunting grew in popularity and as leather and meat market prices increased, many saw a potential business. The development of ...

Yale researchers develop new molecule that eradicates cancer by destroying tumor blood vessels

... of the normal tissues in the mouse appeared to be harmed by our procedure." Published in the October 9 issue of Proceedings of the National Academy of Sciences, the study was conducted with human melanoma and prostate tumors growing in mice. The gene for the icon was inserted into an adenovirus vector tha...

'Meow' isn't language, but enough to manage humans

...fferent vocalizations from 12 cats. No cats were harmed in the experiment, although a few human eardrums were stretched by what came next: He played back the recorded cat calls to 26 human volunteers and asked them to rate each sound for pleasantness and appeal, on a scale of 1 to 7. Nicastro played the s...

Walleye fishery threatened; Puerto Rico aquaculture, calling ALVIN on ocean bottom

...nology previously prevented deployments from being harmed by ocean elements. The new cage technology, developed by Ocean Spar, can resist the elements and is cleaner for the environment. In addition to monitoring the caged fish and their development, future studies will include environmental monitoring an...

Cocaine harms brain's 'pleasure center,' addict study finds

... conclusive evidence yet that dopamine neurons are harmed by cocaine use, because it uses three molecular measures that provide a trustworthy assessment of dopamine neuron health. Dopamine, Little explains, triggers the actions required to repeat previous pleasures. It's not only involved in drug users' "h...

UF study: Calorie restriction reduces age-related brain cell death

...s may be able to develop therapies to repair cells harmed in the disease process or target genes to release additional amounts of these proteins to ensure healthy life, said Leeuwenburgh, who also is affiliated with UF's Institute on Aging. Mitochondria the cells' energy-producing centers can be dama...

Smallpox vaccination grinds to halt

...at can spread from person to person and might have harmed patients, especially those with impaired immunity. Major hospitals, such as the Virginia Commonwealth University Health System and the Children's Hospital of Philadelphia, refused to have any of their staff vaccinated. It was also not clear whether t...

UBC researcher discovers 'control room' that regulates immune responses

...dendritic cells that sorts pathogens without being harmed by them and controls signals given to the immune system. The signals turn immune responses up or down, according to the type of pathogen encountered. The immune system protects the body from potentially harmful substances such as microorganisms, tox...

Armies of fighting fungi protect chocolate trees

...ves age, but that the leaves show no sign of being harmed by these infections. In a survey of endophyte species on cacao trees, they also found evidence that the mix of species varied with spatial location across Panama. When the researchers studied endophytes infecting three different tree species, they fo...

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