Tag: "suspended" at biology news

Scientists find nanowires capable of detecting individual viruses

...tect and treat. The nanowire arrays detect viruses suspended in fluids, whether bodily or otherwise. Lieber says that any anti-bioterror device built around nanowires' virus-detecting capabilities would most likely marry the technology with a microfluidic apparatus that would draw in air, suspend any airborne ...

Counting foxes before the last tally-ho

...here was no change in fox numbers when hunting was suspended for nearly a year during the foot and mouth epidemic in 2001. IFAW campaigner Josey Sharrad, said: "This research demolishes arguments by the hunting lobby that foxes need to be killed to prevent a population explosision. It will also allow us to mon...

Muscling their way into the food chain: Zebra mussels alter fish populations in the Hudson River

...lt zebra mussels feed by grazing on food particles suspended in the water column. There are so many zebra mussels in the Hudson River that they filter all of the water in the river every 1-4 days, removing the microscopic plants and animals that make up their diet. This can be problematic for fish species that...

DFG presents the 2004 MAK and BAT value lists

...ry 3B, and the previous MAK value of 2 mg/m 3 was suspended because the mechanism of action is unclear. Benzo... has been substantiated. The MAK value of lead was suspended because of its demonstrated genotoxic effect. Classification in carcinogenicity category 3B will be ...

Ecosystem bounces back from hurricanes

...dings (total inorganic nitrogen, total phosphorus, suspended solids, fecal bacteria). The high water volume of the second hurricane season (Hurricanes Dennis, Floyd, Irene in 1999) delivered generally comparable but more dilute contaminant loads, and no major fish kills were reported. There were no discernable...

Pearly mussels: One of North America's natural jewels is disappearing

... eating plankton and other small particles of food suspended in the water. Long-lived animals, most species live for decades. Currently, little is known about either mussel diets or the fascinating relationship between larvae and their fish hosts. As mussel beds decline in size, ecologists still don't know th...

University of Pittsburgh receives NIH funding to develop heart assist device for infants

... to develop a miniature centrifugal pump utilizing suspended magnetic levitation technology for use in babies between 5 and 35 pounds. It's conceived that the device could be used for up to six months as a bridge to heart transplantation. In some babies, the device may allow the heart to recover. As such, the ...

New proteomics core at OHSU will speed discovery process

...rovide detailed digital images of stained proteins suspended in gels, as well as a mass spectrometer the size of an upright piano, and a liquid chromatography machine. And the latest software helps Bystrom and his research associate, Deb McMillen, manage the samples, analyze the proteins and mine genome dat...

Controlling biomolecules with magnetic 'tweezers'

.... Magnetic particles 2 to 3 micrometers across are suspended in a fluid and injected into the device. The surface of a thin membrane enclosing the fluid is dotted with an array of thin film pads made of a nickel-iron alloy. When a magnetic field is applied, each particle is attracted to the closest nickel-iron...

Carnegie Mellon U. develops microgel to recover enzymes for manufacturing, research assays

...oom temperature, individual microgel particles are suspended in solution, but lowering the temperature causes the microgel particles to cluster together and precipitate from solution. To test these enzymatic microgel particles, the Carnegie Mellon chemists used an analogue of lactose that changes color when ...

Making the most of stem cells

...zing the cells attached to a gel matrix instead of suspended in solution, and adding the chemical trehalose - a disaccharide or sugar that some animals and microbes produce to protect cells and survive in dry, low-temperature conditions - the Wisconsin team was able to increase stem cell survival rates by more...

St. Jude shows how disorderliness in some proteins lets them interact with a diversity of molecules

...netic field to determine the structure of proteins suspended in solutions, the team determined the shape of p27 when it was unbound. In order to study the interaction between p27 and Cdk2-cyclin A, researchers in the St. Jude Hartwell Center for Bioinformatics and Biotechnology used a technique called surface ...

Scientists, lawyers discuss decision-making amid uncertainty

...studying the climatic role of greenhouse gases and suspended particulate material at NASA's Goddard Institute for Space Studies, Schneider was invited to give his first AAAS presentation. He opened that talk by spoofing a Mark Twain quote: "Nowadays everybody's doing something about the weather but not talking...

Stem cells illuminate early stages of human development

...re removed from flat culture plates and grown in a suspended culture of proteins and hormones. "Embryoid bodies are not embryos, but are spherical structures that form when embryonic stem cell colonies are released from the culture surface and grown in suspension," Golos explains. In that environment,...

Marine scientists discover nutrient pollution boosts fungi, bacteria killing Caribbean reefs

... phosphorus in porous bags made from pantyhose and suspended them at sites on reefs some four to six inches from living colonies of the tiny animals. That enabled them to manipulate and boost nutrient levels in the water. "We found that even modest rises in nutrient pollution could increase mortality of the ...

Over land, sea and air, users give MERIS high marks

...ts can be known to a high degree of accuracy from suspended sediments to living phytoplankton. "Our expectations were very high for this instrument," said Morel. "The scientific community was waiting a long time. Now at last the products are routinely available for use by scientists. Overall the results we a...

Controversial UK badger killings analyzed by UC Davis expert

...id. "The [reactive] culling of badgers ... will be suspended from today,"said British Animal Health Minister Ben Bradshaw in a writtenstatement to Parliament. However, another part of the experiment inwhich some badgers are killed proactively will continue....

Using plants and microbes to purify polluted industrial wastewater

... wetland near Zagreb has reduced concentrations of suspended solids in wastewater by up to 98%, and phosphorous and nitrogen content by 6085% compared to the 30-40% reduction by conventional methods. Such results meet water protection standards laid down in EU directives, and make the re-use of industrial wast...

Research shows little effect from Arctic offshore oil drilling

...to understand the input of dissolved chemicals and suspended sediments into the ocean," said Trefry. "What we found was that more than 80 percent of the sediment that enters the ocean over the course of the year comes in a single two-week period." This late May meltdown arrives early enough in the year to meet...

Canopy raft, canopy crane, canopy bubble, Ikos tree house in Panama

...assive treetop raft, slide along through the trees suspended from a helium balloon and perch in a tree house. ...ssion.The Canopy Bubble consists of a seat harness suspended from a helium balloon that moves along a 1 km transect and will be used to reach two more 400m2 site...

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