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Tag: "net" at biology news

Dirty snow may warm Arctic as much as greenhouse gases

...s into the atmosphere and they fall onto snow, the net effect is we warm the polar latitudes,” said Charlie Zender, associate professor of Earth system science at UCI and co-author of the study. “Dark soot can heat up quickly. It’s like placing tiny toaster ovens into the snow pack.” The study appears...

Researchers shed light on shrinking of chromosomes

...he end of cell division can also serve as a safety net if something goes wrong with chromosome separation in earlier phases of division. When the researchers added chemicals to the cell to block the late condensation, more separation defects appeared. “Sometimes chromosomes get stuck and cannot be full...

Researchers shed light on mechanism of action used by anti-cancer drug

...esses associated with increased protein loads. The net effect of these actions was to induce a shutdown of protein synthesis accompanied by a dramatic increase in cell death. “The notion that sorafenib acts by inhibiting protein synthesis and reducing expression of Mcl-1 suggests that this agent migh...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

...iments of testosterone. They may even experience a net health benefit as a result,” explained McGraw, who studies the functions of naturally occurring chemicals in birds and their relationship to the birds’ colors and health. “In the case of the zebra finch, the cost is in the pigments – having enoug...

Scientists close in on missing carbon sink

...enerally indicated that tropical ecosystems were a net source of 1.8 billion tons of carbon, largely beca...dicates, instead, that tropical ecosystems are the net source of only about 100 million tons of carbon, even though tropical deforestation is occurring rap...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

...hat is responsible for about half of the biosphere net primary production," said collaborator and co-author Hervé Moreau of the Pierre & Marie Curie University Oceanic Observatory in Banyuls-sur-mer, France. "This active absorption of hundreds of millions of tons of carbon per day is essential for m...

Hearts of male and female rainbow trout are different

...r cross-sectional areas. Lactate concentration and net lactate release from cardiac tissue was also examined. Results The researchers found: ventricle strips from males and females had similar rates of oxygen consumption and lactate release under resting conditions; the inhibitio...

Madagascan tropical forests return thanks to better management and well-defined ownership

... be substantial in the study area, with an overall net increase of 4 % during the period 1993-2000. These dry forests have the highest level of plant endemism (species found only in a particular region) in all of Madagascar and are listed as one of the 200 most important "ecoregions" of the world. The st...

Fat screen delivers plant-derived chemical with antidiabetic effects

...' production. "Harmine inhibits an inhibitor for a net positive effect on fat" that ultimately appears to restore insulin response without some of the side effects attributed to TZDs, Tontonoz said. The findings provide "a second example of a small molecule that both promotes fat cell differentiation ...

Magnetic computer sensors may help study biomolecules

...aterials with different magnetic properties. Their net magnetization can be switched on and off by applying an external magnetic field of sufficient strength to align the electron "spins" in the magnetic layers in the same (on) or opposite (off) directions. NIST researchers made an array of spin valves, ...

Study calculates patient time costs associated with cancer care

...traveling to, waiting for, and receiving care. The net costs were calculated using a dollar value of $15....to similar people without cancer, cancer patients' net time associated with medical care varied, ranging from 17.8 hours for melanoma to 351.3 hours for ga...

Farmed salmon could become an invasive species in forest streams

...asive species. "Farmed fish escaping from marine net pens might become an invasive species in British Columbia, Washington or Alaska," says research fish biologist Peter Bisson. "Net pen culture of salmon is big business worldwide, and both advocates and opponents of salmon farming have been very vocal...

Does God answer prayer? ASU research says 'yes'

...es, controlling for differences in sample sizes, a net positive effect for the prayer group is produced. “This is the most thorough and all-inclusive study of its kind on this controversial subject that I am aware of,?said Hodge. “It suggests that more research on the topic may be warranted, and that...

Speeding 'fingertip' discovery -- 20 years of protein info in 1 place

... proteins and analyzed them by ETD, resulting in a net total of 1,435 phosphorylations. Comparing these 1,435 to the 20 years?of published data, they discovered that about 80 percent of what they found never had been reported. The team then constructed an online search tool, PhosphoMotif Finder, which...

Billions of dollars saved in US by polio vaccination

...vaccination in the United States has resulted in a net savings of over $180 billion, even without including the large, intangible benefits associated with avoided fear and suffering. This first study to retrospectively demonstrate the enormous benefits of polio vaccination appears as part of a special is...

Salamanders suffer delayed effects of common herbicide

... were showing up over the long term, such that the net effect of atrazine exposure was even worse later in life than it was while the animals were being exposed. "The biggest surprise was that it took nearly a year to detect the effects of atrazine at 4 parts per billion, which is just 1 part per bill...

Honeydew honeys are better antioxidants than nectar honeys

...DPPH test) also had high total polyphenol content, net absorbance (as colour parameter), pH and electrical conductivity. “These laboratory results show some aspects that people could use to get an idea about which honeys are likely to have the most potent antioxidant properties,?says Pérez....

Morphine makes lasting -- and surprising -- change in the brain

...cocaine, also increase dopamine release. So the net effect of morphine and other opioids, Kauer found, is that they boost the brain’s reward response. "It’s as if a brake were removed and dopamine cells start firing," she explained. "That activity, combined with other brain changes caused by the drugs...

Coated nanoparticles solve sticky drug-delivery problem

...faces that were attracted to water, and they had a net neutral electrical charge," said Samuel K. Lai, a Johns Hopkins chemical and biomolecular engineering doctoral student from Canada and Hong Kong who was lead author of the journal article. "We thought that if we could coat a drug-delivery nanoparticl...

ASU researchers test antibacterial effects of healing clays

...more interesting is the rarity for a geochemist to net a NIH grant. National Center encourages alternative studies The National Center for Complementary and Alternative Medicine at NIH was established in 1998 for just this kind of study. One of the 27 Institutes making up NIH, the Center funds scie...

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