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Tag: "filters" at biology news

New lab technique identifies high levels of pathogens in therapy pool

...he pool area has been increased and additional air filters have been installed that have been shown to capture and remove up to 95 percent of "Mycobacterium avium" aerosols. A 2004 study by Pace and his colleagues using the same molecular technique found that billions of microbes, in the form of "soap scum,...

New strategies to reduce hospital-aquired infections

...ed data on the efficacy of point-of-use 0.2 micron filters to provide a barrier to Legionella and other patho... nations already recommend point-of-use 0.2 micron filters as a simple and effective solution to prevent waterborne microbe transmission to patients. He review...

Distributed Basic Local Alignment Search Toolkit (W.ND-BLAST)

...ed data on the efficacy of point-of-use 0.2 micron filters to provide a barrier to Legionella and other patho... nations already recommend point-of-use 0.2 micron filters as a simple and effective solution to prevent waterborne microbe transmission to patients. He review...

Tagging pathogens with synthetic DNA 'barcodes'

...under a fluorescent light microscope using colored filters that pass only one color at a time. A signal in which the ratio of intensity of green light is four times that of red light, for example, identifies a "4G1R" probe. The researchers say that up to 1,000 different codes can be created using only three ...

Device traps, disables harmful bacteria

...ciency particulate air (HEPA) ultraviolet (UV) air filters on the ceiling of the pool room. They compared con...inflammatory responses -- with and without the air filters operating under similar conditions. They compared the performance of the filters twice, one year apa...

Genomatix, AAAS ink agreement

...equence analysis, different Gene Ontology and MESH filters -- all in one dynamically overlayable package -- makes BiblioSpherePE even more powerful and essential for molecular biology research." ...

Toxic flood lifts lid on common urban pollution problem

...f organic chemicals in oil, gas, grease, cigarette filters and other pollution. Other research on urban runoff, meanwhile, has detected high levels of toxic metals and nutrients including phosphorus thought to leach from building materials, Sansalone said. Organic chemicals are particularly dangerous to fi...

Enzyme affects hypertension by controlling salt levels in body

...uch sodium gets reabsorbed." Normally, the kidney filters and reabsorbs about 99 percent of sodium from the blood and returns it to the body, excreting 1 percent through urine, said Dr. Huang, a nephrologist. However, if salt ingestion remains the same and the kidneys reabsorb 99.9 percent of salt, too muc...

Tiny avalanche photodiodes target bioterrorism agents

...low background level, while PMTs must use external filters to become solar-blind. This makes secure battlefield communication possible utilizing a combination of compact, inexpensive UV LEDs and UV APDs both developed at the Center for Quantum Devices. The technology for the realization of solar-blind APDs ...

Geoscientists follow arsenic from chicken feed to streambeds

...rbed onto nanoscale particles that pass though our filters and through the soil column," said Schreiber. "This suggests that particle transport is an important mechanism in arsenic cycling in these watersheds." Graduate student Mary Harvey is currently studying the adsorption potential for organic arsenic t...

New class of antibiotics effective against drug-resistant bacteria discovered in fungi

...rbed onto nanoscale particles that pass though our filters and through the soil column," said Schreiber. "This suggests that particle transport is an important mechanism in arsenic cycling in these watersheds." Graduate student Mary Harvey is currently studying the adsorption potential for organic arsenic t...

Discovering the first steps in transcription-coupled repair

...lded from ultraviolet light, for example by window filters and protective clothing, many XP sufferers can lead seemingly normal lives. XP results from mutations in any one of seven genes, labeled XPA through XPG, which are involved in the well-understood DNA repair mechanism called nucleotide-excision repair...

Infection 'alarm' yields clues to immune system behavior

...le called Inhibitor of KappaB Kinase, or IKK. "IKK filters and interprets the warning message," said Cheong, who is an M.D.-Ph.D. candidate in the Johns Hopkins School of Medicine. "It carefully controls the level of the immune system's response." That makes IKK a very promising target for new medications d...

Brain-computer link lets paralyzed patients convert thoughts into actions

...er mouse. The researchers study the data and build filters to convert patterns of neural spikes into two- dimensional commands. "Training patients to move things with their minds is different with each patient," said Maryam Saleh, who worked with the first two patients as a Cyberkinetics technician and is ...

Study defines effective microbicide design for HIV/AIDS prevention

...icide formulations can act as physical barriers or filters to slow HIV's passage from semen into body tissues, Geonnotti explained. That slowing would give the HIV-neutralizing ingredient in the microbicide layer, as well as the body's natural defenses against HIV, more time to work. If left untreated, HIV a...

New dyslexia theory blames 'noise'

...udies suggest that children with dyslexia have bad filters for irrelevant data. As a result, they struggle to...exic children have difficulty setting their signal filters to optimum and ignoring distracting noise," Lu said at the time of the Nature Neuroscience study. ...

Twin studies reveal genetic components leading to cardiac and kidney disease

...oteins," said O’Connor, adding that how well these filters work appears to be a heritable factor. Albumin...s are an indication that the permeability of these filters has increased, allowing leakage of good molecules with the bad. This trait is linked to a heightene...

Darwin's famous finches and Venter's marine microbes

...ned seawater through a series of increasingly fine filters to collect the microbes, which they sent back to the J. Craig Venter Institute in Maryland. In the lab, the scientists shredded the collected genetic material in millions of random snippets and then determined their sequence. Based on overlapping...

Rapid, Low-Cost DNA Testing

...nces as well as other DNA sequences, and the assay filters out only the targets. Professor Rothberg's assay is based on the electrostatic properties of DNA. The principle underlying the method is that single-stranded DNA and double-stranded DNA have significantly different affinities for attaching to ioni...

Cancer-killing invention also harvests stem cells

... Engineering Department has invented a device that filters the blood for cancer and stem cells. When he captures cancer cells, he kills them. When he captures stem cells, he harvests them for later use in tissue engineering, bone marrow transplants, and other applications that treat human disease and impro...

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