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Tag: "sources" at biology news

Ocean virus identified in human blood samples

...use of its endemic nature and prevalence, possible sources of Vesivirus infection in humans could include meat, seafood, contaminated water, contact exposure and blood transfusions, researchers say. Evidence suggests that Vesiviruses and other disease-causing caliciviruses are world wide, they said. ...

Environmental metagenomics diagnosing extreme environments, tapping opportunities for clean energy

...s, crop residue, and various grasses, into cleaner sources of energy." One of the systems that DOE JGI characterizing is the microbial community inhabiting the termite hindgut, among nature's most efficient bioreactors--capable of generating two liters of hydrogen from fermenting just one sheet of paper. ...

High-tech tags on marine animals yield valuable data for biologists and oceanographers

... and times of the year for which there are no good sources of data, Costa said. This is particularly important because of the major role played by the Southern Ocean in the global climate system. "Much of the world's weather is determined by what happens in the Antarctic, so understanding the Southern Ocea...

Protecting endangered species helps reduce poverty

...erves declined when communities gained alternative sources of income, such as farming and animal husbandries supported by WWF. In Namibia, the creation of conservancies, where communities are jointly managing their wildlife resources, has resulted in better wildlife management, increased wildlife populations...

Mayo Clinic collaboration discovers protein amplifies DNA injury signals

...ly and often damaged by environmental and chemical sources such as ultraviolet radiation, cigarette smoke, and other natural and artificial toxins. These create injury sites or lesions. In healthy situations, DNA repair signal pathways are competently monitoring for damage and alerting the repair system when...

Study outlines genetic differences between potential pandemic influenza strains

...H5N1 virus samples taken from both avian and human sources from 2003 through the summer of 2005. They correlated the genetic makeup of viruses to the physical characteristics of viruses, including surface proteins and receptor sites, to determine where each virus should be placed on the H5N1 family tree. ...

Alternatives to the use of nitrate as a fertiliser

...ction, what is required is a study of nitrogenated sources as alternatives to the nitrates that predominate i...y of using animal ammonium or urea as nitrogenated sources from certain plants enables the study of these forms of nitrogen as an alternative to nitrates. Neve...

Potential heart benefit found in stem cells

...n, scientists continue to explore mature stem cell sources for potentially significant cardiovascular benefit...hat the exploration of stem cells derived from new sources may bypass some of the debate that is preventing research progress right now," said Sharon A. Hunt, ...

The secret life of algae

...stery to scientists why some types needed external sources and others did not. Now researchers at the Universities of Cambridge and Kent have discovered that half of all algae have a dependent but beneficial relationship with bacteria that make the vitamin for them. The researchers, funded by the Biotechnol...

Most human-chimp differences due to gene regulation ?not genes

...ssue from the liver -- one of the most homogeneous sources -- from five adult males from each of the four species. They focused their search on expression levels of two sets of genes, those that remained largely unchanged across all four species, suggesting that there was little room -- or need -- for impro...

Biofuels can replace about 30 percent of fuel needs with significant research and policy effort

...n plastics and materials prepared from sustainable sources such as plants, sunlight and wastes. Other team leaders on the project include Dr. Charlotte Williams and Dr. Richard Murphy from the Imperial College London and Dr. Brian Davidson from Oak Ridge National Laboratory. Other key collaborators include ...

Enzyme crystal structure reveals 'unexpected' genome repair functions

...ant repair because of the damage from a variety of sources that occurs to its base pairs of nucleotides. It is estimated that in every human cell more than 10,000 DNA bases are repaired each day, making NER critically important for cell survival and protection against mutations. NER is a critical defense mec...

Nanopore method could revolutionize genome sequencing

...e sequencing machines, which introduces additional sources of error." The study was funded by the National Science Foundation and by the National Human Genome Research Institute at the National Institutes of Health. The NIH funds are from a program launched in 2004 to encourage researchers to pursue a wi...

Alaska seal pup diet may hold key to decline of population

...e animals Herring, capelin and eulachon are good sources of much-needed fat in the diet of harbor seals, but they have decreased in numbers in some areas where seals live, Polasek explained. "We are examining the importance of fatty fish in the diet of young, growing seals to see if our experimental seals ...

The critical importance of mangroves to ocean life

...il and suggest that the plants are one of the main sources of dissolved organic matter in the ocean. The res...iogeochemical cycles it is crucial to quantify the sources of marine dissolved organic carbon," Dittmar writes. "Here we show that mangroves play an unexpected...

Atmospheric ozone recovering in mid-latitudes, report shows

...uding chlorofluorocarbons (CFCs) emitted from such sources as spray-can propellants,refrigerator coolants and foam insulation. In the 7- to 11-mile (11- to 18-kilometer) region, the researchers link a slight increase in ozone to changes in atmospheric transport - perhaps caused by natural variability or hum...

Dartmouth study finds that arsenic inhibits DNA repair

...ic, the greater the likelihood that drinking water sources contain some potential adverse levels of the toxin...Private wells are common in these areas as primary sources of drinking water. ...

Mushrooms as good an antioxidant source as more colorful veggies

...ots, green beans, red peppers and broccoli as good sources of dietary antioxidants, Penn State researchers say. Dr. N. Joy Dubost, who recently earned her doctorate in food science at Penn State, measured the activity of two antioxidants, polyphenols and ergothioneine, present in mushrooms, using the ORAC a...

Many cleaners, air fresheners may pose health risks when used indoors

... effort in the last decades on controlling the big sources of air pollution and on the chemicals in consumer ...eed to pay attention to other aspects of pollution sources that are right under our nose," said William Nazaroff, a UC Berkeley professor of environmental engi...

DOE JGI finishes 100th microbial genome

...how they can be captured to render clean renewable sources of energy and to repair damaged environments, are ... break down plant materials to produce such useful sources of energy as ethanol and hydrogen, and clean up toxic waste sites. We know that microbes can perform...

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