Tag: "filter" at biology news
First technology to remove prions that cause vCJD from blood launched
...Disease. The CE mark means the new prion reduction filter
meets pan-European essential requirements for safe...devices. "The availability of our prion reduction filter
is a seminal event heralding a new era in blood safety," says Eric Krasnoff, Chairman and CEO of Pal...
Man-made wetland's effectiveness similar to natural marsh
...nd and waterways. They also act as sinks ?wetlands filter
out chemicals in water that runs off from farm fields, roads, parking lots and other surfaces, and hold on to them for years to come. But the jury is still out on how long a wetland can remain a sink for certain nutrients, Mitsch said. For example, ...
How monarch butterflies are wired for navigation
...hers found that when they placed a UV-interference filter
over the polarized light source, the butterflies lost their orientation response. The researchers also pinpointed the location of the circadian clock in the butterfly brain. Such circadian clocks govern the approximately 24 hour activity and metabol...
Plankton can run, but can't hide from basking sharks
...ea water through its enormous mouth. It is able to filter
up to 2,000 tons of water per hour - the equivalent of an Olympic-sized swimming pool. It is harmless to humans, but has been netted and harpooned for its oil which was burned in lamps and more recently for its fins. ...
New type of rejection blocker protects kidneys after transplant
...rate (GFR) -- a measure of the kidney's ability to filter
waste -- as an indicator of how well transplanted kidneys were functioning. The GFR was significantly higher at 12 months for patients receiving both the intensive and less intensive belatacept regimens compared to cyclosporine patients. Another indi...
'Sinkers' provide missing piece in deep-sea puzzle
...ich are collectively called its "house." The outer filter
traps coarse particles, and can be up to one meter (three feet) across. The inner filter
is slightly more dense, and traps small particles that the animals eats. The larvacean constantly pu...
Device traps, disables harmful bacteria
...airborne endotoxin concentrations. "This specific filter
has a blower that takes a high volume of air and puts it through a filter
that screens bacteria and even smaller particles," said Angenent, a member of Washington University'...
Toxic flood lifts lid on common urban pollution problem
...the ground, where soil and microorganisms can help filter
the contaminants. Planting vegetation and especially trees also creates aesthetically pleasing buffer zones, providing storm water flooding control and other benefits. Finally, cities can use high-tech street sweeping equipment that is very effective...
Hidden sponges determine coral reef's nutrient cycle
...ace also means a larger filtering surface. Sponges filter
the water. They take up planktonic particles such ...th of marine plants and other organisms. Sponges filter
at a phenomenal rate: if the seawater were to remain stationary, the sponges would have completely p...
New results validating Pall prion reduction filter disclosed at ISBT Congress
...ent of vCJD. The status of evaluations of the new filter
system by blood authorities in Europe were also re...l Blood Service (NBS) are currently evaluating the filter
system for integration into their respective practices to safeguard the blood supply from vCJD. Fina...
The ecological effects of the Chernobyl disaster
...ing dates. The radio nucleotides in the area also filter
into the soil, and from there into plants. Animals that consume these plants, including livestock, then take up the radionucleotides. Viktor Dolin (National Academy of Sciences, Kyiv, Ukraine) will discuss a newly described process of environmental s...
NJIT study shows nanoparticles could damage plant life
...ed the study by allowing seeds to germinate on wet filter
paper in Petri dishes, after which they added known quantities of nano-sized alumina suspended in water. The control portion of the experiment was treated only with water, and the authors observed the experiment for seven days. During that time, they...
Research: Snails were overlooked contributors to marsh destruction
...provide nurseries for juvenile fish and shellfish, filter
water-borne pollutants and calm storm-driven waves, reducing the threat of hurricane-induced flood and erosion. So scientists and citizens alike watched with alarm as the marshes started dying off from Louisiana to South Carolina beginning in 1999. ...
Picking particles faster than one at a time
...un again -- using a template after segmentation to filter
out incompatible shapes -- false positives dropped to a mere 7 percent. Beyond the demonstrated goal of selecting the same particles an expert would select with a low error rate, future refinement of the segmentation algorithm aims higher. By conce...
Born with a love of speech
...no preferences. "We established that the low-pass filter
signals weren't distinguishable to the neonates. The low frequency sounds that we used in our study didn't have enough information for the neonates to tell them apart," says Dr. Vouloumanos of the unpublished results. "From that I conclude tentativel...
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-Univer...
'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...
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...
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 fin...
Sticky surfaces turn slippery with the flip of a molecular light switch
...ave a wide variety of applications, from a protein filter
for biological mixtures to a tiny valve on a "lab-on-a-chip." Synthetic polymer membranes are used in a variety of applications based on the science of "bioseparation" -- filtering specific proteins from complex liquid mixtures of biological molecul...