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Tag: "contamination" at biology news

A radical solution for environmental pollution

... refining, so there's quite a lot of environmental contamination with this and related hydrocarbons, from refineries or chemical plants," Marsh said. "Because of their molecular structure, these compounds are very difficult to degrade, which is why they're pollution hazards." Toluene is especially worrisome becaus...

Toxic flood lifts lid on common urban pollution problem

...and the muck it is leaving behind -- also owes its contamination to a source as mundane as it is unexpected: Toxins...ficials remain extremely concerned about bacterial contamination in the flood waters. Typically the result of contamination from untreated sewage, bacteria also can ...

Use of high hydrostatic pressure to inactivate Hepatitis A virus in oysters studied

...isms from their environment. In some cases, sewage contamination of harvesting areas, either from coastal runoff or ship discharges, has been shown to result in HAV contamination of oysters. Several studies have demonstrated remarkable concentration and persistence of HAV in she...

Hanging baskets of sex and death help fruit growers

...ter with another real moth. This results in direct contamination of eggs laid by the pest or contamination of the site where the moth lays its eggs. The larvae are killed after eating the virus on the egg or...

Researchers uncover E. coli's defense mechanism

...gh undercooked meat, unwashed vegetables and cross contamination from surfaces on which these foods were prepared. Infections from either of these organisms can cause diarrhea, abdominal cramps and sometimes more serious illnesses that require hospitalization. E.coli doesn't respond well to antibiotics, while Salm...

Attacks of King George III's madness linked to key metabolism molecule

...t, ironically, he may have been exposed to arsenic contamination of a substance his doctors gave him as treatment. PGC-1 alpha is a "transcriptional coactivator" that acts as an on-off switch for a number of genes involved in manufacture of glucose in the liver and in the "heating system" of brown fat cells that ...

New miniaturised chip dramatically reduces time taken for DNA analysis

...lems, such as establishing the source of microbial contamination quickly and efficiently. The new miniaturised electrochemical genosensors meet the current need for DNA to be analysed at a low cost with easy-to-use devices that do not need to be supervised by highly trained scientists. ...

Ebola virus: from wildlife to dogs

...se. Their bodies then become a potential source of contamination for humans, but also for certain domestic animals....ggests that circulation of the virus involved many contamination events between distinct animal species. Thus, the multiplicity of infected species, their different ...

A hope for oil spill bioremediation

...that had recently been restored after an important contamination episode. Authors concluded that, probably due to the contamination record of the past in that coast, indigenous populations had evolved to select for organisms able to...

Study uncovers bacteria's worst enemy

...cessful use of bacteria to remediate environmental contamination from nuclear waste and processing activities may depend more upon how resistant the bacteria are to chemicals than to how tolerant they are to radioactivity. The results of a recent Laboratory study may help make bacterial bioremediation a more wides...

Survey finds silver contamination in North Pacific waters

The highest levels of silver contamination ever observed in the open ocean turned up in sampl...ow levels that would be toxic to marine life, this contamination of what had been considered relatively pristine waters highlights the increasingly global impact of ...

Drug-resistant bacteria on poultry products differ by brand

...r study is the first to directly compare bacterial contamination of poultry products sold in U.S. supermarkets from...d with a significantly lower rate of Campylobacter contamination was actually an antibiotic-free brand." Price explained that previous epidemiological studies have ...

How the environment could be damaging men's reproductive health

... POPs. In spite of decreases since the 1970s, this contamination has resulted in higher levels of POPs in humans, s...ent at the Fertility Centre, said: "The sources of contamination for POPs are closely related to human activities such as domestic and industrial discharge, automobi...

Antibodies from plants protect against anthrax

...ibodies are also safer because there is no risk of contamination by human or animal pathogens, and plant viruses are not known to infect humans," says Yusibov. "It is an easy, inexpensive and, very stable system. If you're looking for a way to stockpile a large amount of antibodies for a long periods of time, pla...

New studies suggest airborne SARS transmission is possible

.... The investigators wondered whether environmental contamination of hospital air or surfaces could explain the ongoing risk of SARS coronavirus transmission to health care workers. To answer this question, they collected patient information and environmental samples from the SARS units of four Toronto hospitals. ...

UCSD researchers maintain stem cells without contaminated animal feeder layers

... new way to generate human stem cell lines without contamination by animal cells or products," said the study's sen...he UCSD team is continuing studies to determine if contamination occurs from this source. For a proposed animal-free medium, the UCSD study takes advantage of a pre...

Scientists rid stem cell culture of key animal cells

...r" cells, long thought to be a source of potential contamination for the therapeutically promising cells. The new ...er cells were one of the main sources of potential contamination with pathogens, so their elimination should improve safety. However, not all the animal components h...

Tiny particles could solve billion-dollar problem

...environmental research programs. "The scale of TCE contamination is enormous, so any new scheme for TCE remediation has got to clean large volumes of water very quickly for a just a few pennies." Hughes, Wong and their collaborators hope to develop a device that would include a cylindrical pump containing a catal...

Anti-bacterial additive widespread in U.S. waterways

...ronment. The new findings suggestthat triclocarban contamination is greatly underreported. The study ispublished in...d Health.The nationwide assessment of triclocarban contamination is based inpart on an analysis of water samples collected from rivers in andaround Baltimore, Md., a...

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