Tag: "filter" at biology news
Story tips from the Department of Energy's Oak Ridge National Laboratory, March 2006
...re agents. Unlike traditional systems, there is no filter
paper or other material that can become fouled and rendered useless. Instead, Greenbaum's method involves tissue-based biosensors such as green algae and cyanobacteria for direct detection of chemical warfare agents. These living sensors are always p...
Molecular discoveries aim at advancing early diagnosis of cancers
...s identified in the first pilot study performed on filter
macroarrays. In this pilot, published in Breast Cancer Research last year, which included 24 women with breast cancer and 32 controls, the researchers failed to classify cancer in 26 percent of the samples from women diagnosed with breast cancer. Th...
Birdsong sounds sweeter because throats filter out messy overtones
...e human vocal tract in speech, acts as a resonance filter
that can control the sound coming from the mouth," Suthers said. "Beak movements during song also contribute to this filter, but are not as important as changes in the size of the internal vocal tract. Human sopranos use the same technique as the car...
'Dead zone' summer killed billions of ocean state mussels
...an wondered how the loss of so many mussels, which filter
minute algae called phytoplankton from the water, ...c event. They found that the healthy mussels could filter
the equivalent of the entire volume of Narragansett Bay in just 20 days. But within weeks of the die...
Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests
... psychologist Niko Troje. "We believe this visual filter
is used to signal the presence of animals that are propelled by the motion of their feet and the force of gravity," suggests Dr. Troje, Canada Research Chair in Vision and Behavioural Sciences. Conducted with Dr. Cord Westhoff from the Ruhr-Univers...
Analysis highlights areas for research into genetic causes of alcoholism
...croarray results for the congenic 9 mouse became a filter
for the overall meta-analysis and were used to identify genetically divergent genes on mouse chromosome nine. "We were able to use the power of many studies to narrow thousands of candidate genes to a manageable list in a way that would have been c...
Massive marsh planting to begin in coastal Alabama and Mississippi
...age new growth, least disturb donor sites and best filter
water quality. The first project kicks off in the Grand Bay National Estuarine Research Reserve along Bayou Heron, Mississippi during the second and third week of April. The ambitious schedule of restoration involves two days of harvesting black need...
New technology enables faster, more efficient cell harvest: Cell therapy meeting study
...tly working with several companies in applying its filter
harvest system to the development of innovative cell-based therapies in a variety of therapeutic areas, including orthopedics. "We are pleased that Pall technology can play a key role in the revolutionary advances now occurring in medicine by provi...
Massive duplication of genes may solve Darwin's 'abominable mystery' about flowering plants
...dePamphilis and colleagues relied on a statistical filter
to hunt for ancient duplications. In order to show that such an event occurred early in angiosperm history, dePamphilis and his colleagues had to compare the genomes of "basal" angiosperms--those whose ancestors diverged from the rest early in the li...
Plants tell caterpillars when it's safe to forage
...l, they should hide in "shelters" fashioned out of filter
paper attached to the plastic cups they were kept in. When larvae were fed an artificial diet, however, different light conditions produced no changes in their hiding behavior. But introducing plants changed larvae behavior under both day and night ...
ACS news service weekly press package - May 15, 2006
...so finds use -- counterproductively, in fact -- to filter
and clarify cloudy whiskey. (You'd get a more flavorful beverage if distillers skipped that for-aesthetics-only step and marketed cloudy whiskey.)No wonder that efforts are underway to fine-tune the process for carbonizing wood -- making charcoal -- ...
Ritalin packs punch by elevating norepinephrine, suppressing nerve signal transmissions
... neuronal response in this way is believed to help filter
extraneous stimuli, Waterhouse explained. With the extraneous stimuli out of the way, the individual is better able to attend to the important stimuli. In addition, the researchers found that the higher dose caused the rats to increase motor activit...
Connections between neurons act as information filters in the brain
...ells produce a lot of background chatter. Synapses filter
this random noise and enhance relevant information. They work as very fine-tuned filters that do exactly what you would want them to do." Brain cells signal by sending electrical impulses along axons, long, hair-like extensions that reach out to nei...
UCSD researchers develop 'smart petri dish'
...trients and chemicals through the cell culture and filter
out larger particles such as bacteria and viruses. This design effectively persuades the cells to behave collectively the way they do in a fully functioning liver. The scientists write in their paper that in their experiments the Smart Petri Dish was...
Speeding discovery of the 'human cancer genome'
...humans," he said. "Mice can therefore be used as a filter
to help reduce that noise, and as a tool to determine, in areas of chromosomal alteration, what changes are functionally relevant." The difficulty stems from the fact that studies that scan the genomes of human tumors for differences typically find...
Prion disease agent causes heart damage in mouse study
...ntify brain-wasting diseases and possibly a way to filter
or chemically treat blood to remove any infectious prion disease agents. Currently, in the United States individuals who lived in the United Kingdom for three months or more during the outbreak of mad cow disease from 1980 to 1996 are asked not to do...
A new tool against brain disease
...e something in cigarette smoke "seems to help them filter
out irrelevant stimuli. They can focus better," McIntosh says. So a drug aimed at certain nicotinic receptors might treat schizophrenia. New Neurotoxin is a Key for Designing New Medicines McIntosh says the new toxin itself is unlikely to beco...
Water filtration technique removes dangerous freshwater algae toxins
... ultrafiltration membranes with very fine holes to filter
water, Microcystin toxins are small enough to slip...at sticks to organic molecules. It's often used to filter
water and clean up environmental spills, and it's even administered to poison victims to clean toxin...
Ingredient in Prozac increases risk of extinction for freshwater mussels
...efficient wastewater treatment facilities that can filter
out these products before they reach our waterways...y of rivers and streams, Heltsley emphasized. They filter
large volumes of water for food each day, thereby helping filter
contaminants and excessive nutrient...
Parasitic plants sniff out hosts
...odder seedlings in a water vial at the center of a filter
paper disk. A tomato plant was placed near the ed... four days, when the plant was growing flat on the filter
paper, the researchers measured the direction of the shoot. The researchers report that 80 percent o...
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