Tag: "size" at biology news

PNNL recognized for commercializing technologies

... series of ring electrodes of increasingly smaller size in combination with both radio frequency and direct current electric potentials. This provides for the efficient collection of ions in the presence of gases where they normally would be lost, and a more focused transmission. The result is much greate...

Seeking a mechanical solution to nation's number-one children's illness

...ese include the elastic properties of tissues, the size of tissues, and the adhesion properties on the surface of the eustachian tubes. "We don't know which of these are crucial in the different patient populations," says Ghadiali. "Until we do, we're operating in the dark. We can design therapies, such a...

USC researchers produce a hairier mouse

...w think that noggin plays a role in regulating the size of penile and clitoral tissues in mice, and that i...its. "But some of the others, like the increase in size in the genitalia or the increased thickness of the fur, may be variations that might not be negative...

Purdue scientists: Genetically modified fish could damage ecology

...as generations pass, a population could dwindle in size and, potentially, disappear entirely. "Ours is the first demonstration that a genetically modified organism has a reproductive advantage over its natural counterpart," said Howard, a professor of biological sciences in Purdue's School of Science. "Th...

Antibiotics may not be necessary when treating children with a simple skin abscess

... regard to fever or wound tenderness, discharge or size in patients whose antibiotic therapy was changed compared to those whose therapy was not changed to an effective antibiotic. Four patients were hospitalized on the initial follow-up visit because the abscess had either increased or had not improved a...

Fuel-cell microbes' double duty: treat water, make energy

...cell is essentially aPlexiglass cylinder about the size of a soda bottle. Inside areeight graphite anodes (or negative electrodes), upon which thebacteria attach, and a hollow central cathode (or positiveelectrode). Electrons flow along a circuit wired from the anodeto the cathode. A steady flow of wast...

Despite confinement, crop genes can spread fast to wild

...of transgene leakage, the rate of pollen flow, the size of the wild population and the effects of the transgene under wild conditions. By considering these factors, the researchers not only could calculate the probability of genes spreading to wild populations, but also the probability that they will be p...

University of Delaware lays keel for new research vessel

...r gauging how natural forces affect the population size of the blue crab fishery." During the crab's early life stages, it travels the sea at the mercy of the currents, tides, and winds. In other research, UD scientists are using the ship to examine the water quality of the Delaware Bay, to research how s...

Study predicts conditions for sustainable lion trophy hunting

... male lions age five and older, populations of any size can be sustained without bag limits. The study, wh...quotas, but quotas are supposed to be based on the size of an animal population. Lions, however, are hard to count. Using long-term data on lion behavior, m...

Save The Tiger Fund announces alliance with the Critical Ecosystem Partnership Fund

...$3 million over three years to at least double the size of STF's grant distribution in Asia's biodiversity hotspots, the biologically richest yet most endangered areas. ExxonMobil Foundation has also committed an additional $3 million. "Important strides have been made in tiger conservation in recent...

Carbon dioxide fertilization is neither boon nor bust

...bon dioxide concentration? The long life and large size of trees make direct assessment of forest responses to carbon dioxide enrichment difficult. FACE and other similar research, however, allow for multi-year studies of forest stands and enable researchers to get a peek at the future with respect to atm...

Seeing the forest for the trees: The future of environmental policy lies in interaction

...eholds in 141 countries, even where the population size declines, have a significant impact on wildlife and the environment. Further work is showing the symbiotic relationship between humans and natural systems, and between one policy and another. Liu notes that while individual policies may elegantly wor...

Powerful machines are coming in small packages

...ike an engine," Patil said. "The whole idea is the size and shape would be like a battery. The goal is an energy density of 1,000 watt-hours per kilogram, which is 3-4 times [as efficient] as a conventional battery."...

Nanoparticle probes are destined for major new role in medical diagnostics and drug delivery

... proteins and DNA." By virtue of their miniature size nanoparticles assume special properties that disti...engineering. Although nanoparticles are similar in size to biomolecules such as proteins and DNA, nanoparticles can be humanly engineered to have specific o...

Breakthroughs in acoustic tracking shine new light on the lives of fish

...se new data may help design reserves that are of a size and location that could protect young sharks throughout their early years of life, allowing some population recovery. Predicting Natural Fluctuations and Movements to Inform Reserve Design Breakthroughs in acoustic technology are also revealing bas...

Small amounts of alcohol or anesthetics may damage the developing brain

... cells that it causes a permanent reduction in the size of the brain and long-term cognitive impairment. Olney and colleague David F. Wozniak, Ph.D., research associate professor of psychiatry at Washington University, have demonstrated these permanent deficits in mice and rats, and they believe the same ...

Brookhaven Lab expects $30 million to support life sciences

... and other biological molecules. "The large size of the grant is a tribute to the strong infrastructure within the NSLS and Brookhaven Lab," said Robert Sweet, a structural biologist in the Biology Department at Brookhaven and spokesperson for the research group that maintains the beam lines. "It a...

Nano-origami

... than the length of a standard ruler and about the size of several other common biological structures, such as a small virus or a cellular ribosome. Making the octahedron from a single strand was a breakthrough. Because of this, the structure can be amplified with the standard tools of molecular biology ...

Pesticide exposure among agricultural workers varies by job task

...ving young buds from orchard trees to increase the size of the remaining fruit - face a greater likelihood of pesticide exposure than other farm workers, according to a new findings from Fred Hutchinson Cancer Research Center that appear in the February issue of Environmental Health Perspectives . The re...

World's largest-ever sea turtle symposium to address plummeting populations of sea turtles

...herback sea turtle, which can grow to nine feet in size and up to 2,000 pounds and pre-dates the dinosaur, is one of the species on the brink of extinction. In 1982, 115,000 reproductive female leatherbacks graced the coastlines of the Americas in the Pacific Ocean. Today, just two decades later, that num...

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