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Tag: "contamination" at biology news

Amphibians in losing race with environmental change

... higher rates of parasite infections, and chemical contamination of aquatic systems is also more common. Many animal species lay their eggs communally or congregate socially, often to avoid predation or improve resource use. But global warming has caused higher levels of certain infectious diseases of some am...

A new portable biosensor detects traces of contaminants in food more quickly and cheaply

...a chemical substance called triazine, often causes contamination both of underground water and overground water. Fo...d as an alarm for the rapid detection of 'risk' of contamination in practices based on Risk and Critical Control Point Analysis". ...

Hotspots of mercury contamination identified in eastern North America

A US and Canadian research team surveying mercury contamination in fish and birds in the northeastern United State...ch and common loons, but it also took into account contamination in other fish, birds, and mammals. In addition to these hotspots in New England, New York, and Nova ...

Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex

...dle material in a way that first of all will avoid contamination and, second, ensure that whatever is there gets well preserved because it can be interrogated." The scraps of dinosaur protein were wrested from a fossil femur discovered by John Horner, of the Museum of the Rockies, and colleagues in 2003 in Hell...

Study finds mercury prevalent in many western fish

... may be affected. In birds, the effects of mercury contamination are neurological or behavioral ?and often subtle. ...regional questions about the prevalence of mercury contamination among fish in western rivers; not to do a stream-by-stream analysis of the impact. The EPA's "tiss...

Swimming 'to the left' gets bacteria upstream, and may promote infection

...theterized patients and the incidence of microbial contamination at protected wellheads. To our knowledge, this is the first time that a natural propensity to swim upstream has been discovered and described in bacteria." To study the hydrodynamics of these bacteria in a flow environment, Köser's team construc...

'Hidden-hero' microbes in soil, water may help naturally clean toxic sites

...ak Ridge site, the process should work to mitigate contamination at more than 7,000 other sites nationwide -- and d...l develop models to help predict the rate at which contamination levels drop when using natural methods such as bioremediation and artificial techniques such as chem...

Researchers develop technologies to devour food pathogens

... 183 cases of illness were reported due to spinach contamination with a virulent strain of E. coli. "What is happening is unacceptable," Linton said. Bhunia's technology is further described in an article published this summer in the Journal of Biomedical Optics. Linton and Morgan have been working with chlori...

GlycoFi and Dartmouth report full humanization of yeast glycosylation pathway in Science

...in chemically defined media, without risk of viral contamination from animal-derived ingredients. "Switching to this technology will also provide improvements in product uniformity and overall production economics," Dr. Gerngross said. He noted that the GlycoFi and Dartmouth research team had previously publishe...

Transmission of antibiotic-resistant bacteria linked to previous intensive care unit room occupants

...s exposed to the bacteria "suggests that levels of contamination do not pose a high risk for transmission or that current cleaning methods generally reduce contamination below levels required for transmission," the authors write. "Based on our findings, the prevention ...

Genetic study of Neanderthal DNA reveals early split between humans and Neanderthals

...ments, the Neanderthal DNA library is riddled with contamination from microbes that lived off the nutrients in the Neanderthal remains, as well as contamination from humans handling the specimens. However, the scientists performed a variety of studies to conf...

Experimental vaccine protects mice against deadly 1918 flu virus

...ially deadly materials under high-level safety and contamination precautions designed to protect the researchers and prevent microorganisms from entering the environment. "Understanding why this influenza virus was so deadly is an extremely important question," says NIAID Director Anthony S. Fauci, M.D. "By bui...

Genomic comparison of lactic acid bacteria published

...lic concerns at a fevered pitch over the bacterial contamination of spinach, it is easy to lose track of how bland and deprived our world would be without the contribution to our food supply of such benign microbial players as lactic acid-producing bacteria. Researchers from the U.S. Department of Energy Joint Gen...

Pesticides need sunscreen to beat the heat

...n cleaner waters, as the risks of excess pesticide contamination will be lowered. "It can be used for many other pesticides. We are considering it as a platform carrier material for pesticides and have looked at several pesticides, including this oil-soluble avermectin, and water-soluble validamycin, and a coup...

Bacteria that use radiated water as food

...omposition and character, and to determine whether contamination had occurred. The researchers also examined the age of the fracture water and its chemical composition. This fracture water contained hydrocarbons and hydrogen not likely to have been created through biological processes, but rather from decomposit...

Gorilla susceptibility to Ebola virus: the cost of sociality

...ity and to test the validity of different possible contamination scenarios. The authors of the study showed that transmission between gorillas was particularly important within groups and led to a very high mortality rate--97% of group-dwelling individuals. In contrast to the hypothesis expressed above, evidence s...

Metal homeostasis research in plants will lead to nutrient-rich food and higher yielding crops

...te fertilizers, have led to high levels of Cadmium contamination at many locations worldwide. Utilizing DNA shuffling and heterologous expression in yeast, Guerinot and her colleagues isolated alleles of IRT1 that no longer facilitate the accumulation of Cadmium yet retain the crucial ability to transport Iron. W...

Magnetism and mimicry of nature hold hope for better medicine, environmental safety

... manipulating droplets so carefully and preventing contamination of the samples, we can detect things like signs of disease or environmentally hazardous materials much better," said research associate Lindsay. "We can analyze things using small droplets that normally would require much larger amounts of fluid for ...

Microscopic passengers to hitch ride on space shuttle

...g water and breathable atmosphere, to help prevent contamination and contagious infection while in space. Scientists also believe this research some day may benefit people on Earth by leading to new therapies to treat infection. "This experiment requires only the minimum of space shuttle resources, but it has th...

First human trial of antibacterial contact lens

...et in July. "Adverse events caused by microbial contamination of contact lenses are a major impediment to more convenient, extended wear of contact lenses," says UNSW Professor Mark Willcox, who will supervise the trial. "This trial is the first significant step towards overcoming this significant problem." ...

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