Tag: "continuous" at biology news

System to measure carbon dioxide flux from soil patented

... long-term ecological studies to collect data on a continuous basis across the southeastern United States. Current research cooperators include: Duke University (Durham, NC), USDA Agricultural Research Service (Auburn, AL), the SRS Center for Forested Wetlands Research (Charleston, SC), SRS Disturbance and Mana...

JCI table of contents, 16 February 2004

...od vessel growth. The data indicate that long-term continuous delivery of VEGF, when maintained below a threshold microenvironmental level, can lead to normal blood vessel growth. These findings may guide strategies for therapeutic VEGF delivery. TITLE: Microenvironmental VEGF concentration, not total dose, d...

Researchers-again-pinpoint why stress kills

...wing mild stressors each week, in random order: 1) continuous overnight illumination and 40 degree cage tilt along the vertical axis; 2) paired housing; 3) soiled cage; 4) exposure to an empty water bottle immediately after a period of acute water deprivation; 5) stroboscopic illumination; and 6) white noise. T...

Looking beyond biodiversity to explain community invasibility

...ners, Cadenasso, and Pickett analysed data from 42 continuous years of sampling old field succession. In contrast to the experimental literature, they found that when richness was related to invasion dynamics, it enhanced rather than impeded invasion. A mixture of factors, including resident species compositio...

Century may bring unprecedented climate change to southern hemisphere

...rnal Science , result from the study of the first continuous record of Andean climate change during the past 48,000 years. The Andes region of Peru is one of the most biologically diverse areas on the planet. In the article, Bush and fellow researchers Miles Silman of Wake Forest University and Florida Tech g...

Araucariaceae of New-Caledonia: endemic species in danger

... on IUCN Red List of endangered species (1) . The continuous regression of populations of several species, brou...e different species of Araucaria appear capable of continuous regeneration. Nevertheless, although the tall individual trees are fairly fire-resistant, the regene...

B2MIN/6 scientists wait for Beagle 2 to call home

...e into auto-transmission mode, when it will send a continuous on-off pulse signal throughout the Martian daylight hours. The first window of opportunity to communicate with Beagle 2 took place at around 06.00 GMT yesterday, when NASA's Mars Odyssey spacecraft flew over the planned landing site. In the absence o...

Researchers engineer mouse embryonic stem cells to form sperm cell precursors

...isolated the germ cells, they were able to sustain continuous cell lines in a laboratory. The researchers also found that embryoid bodies that were allowed to grow contained cells that differentiated into mature, male, sex cells similar to sperm, but they lacked tails. The team isolated those cells and injecte...

Can EPO prevent loss of brain function in schizophrenia?

...r that in addition to disturbed brain development, continuous neurodegenerative processes are involved in the progression of this brain disease. Nevertheless, molecular and cellular mechanisms accounting for the various dysfunctions of schizophrenic psychosis are far from clear. Existing animal models of schizo...

Smallpox in Europe selected for genetic mutation that confers resistance to HIV infection

...le of all ages. Smallpox, on the other hand, was a continuous presence in Europe for 2,000 years, and almost everyone was exposed by direct person-to-person contact. Most people were infected before the age of 10, with the disease's 30 percent mortality rate killing off a large part of the population before rep...

A bird in a tree for biodiversity

... location to compare how the trees fared in larger continuous tracts of virgin forest with those still growing i... to the ground but didn't regenerate as well as in continuous forest tracts. The bird-tree dependency that evolved in this ancient forest, isolated from other rai...

November science picks!

... small as 10 centimeters bulges -- from space) and continuous sensors would allow researchers to better understand a volcano's magmatic plumbing system and provide more specific alerts to residents living near active volcanoes. For more information, call Daniel Dzurisin at 360-993-8909. It's The Water, And A W...

It's feast or famine: Predators may drive lemming cycles, Science researchers say

...region of tundra, aided in no small measure by the continuous daylight and open landscapes. For the Science study, Gilg, Hanski and Sittler compiled the 15 year's-worth of data for each of the five species. The results showed the stoats' population cycles lagging behind those of the lemmings. This was expect...

FDA approves Raptiva (efalizumab) for chronic moderate-to-severe plaque psoriasis

...first biologic therapy that is designed to provide continuous control of chronic moderate-to-severe plaque psori...therapies have made it difficult to offer patients continuous relief," said Craig Leonardi, M.D., clinical associate professor of dermatology of Saint Louis Unive...

How many fish in the sea? Census of Marine Life launches first report

...epth, pressure, and size of the abyssal plain make continuous or even frequent observations in this realm extremely difficult, hiding how fast things are changing, which will keep much of the life this area unknowable. Experts question whether even an intensive and expensive sampling program could describe the...

Ki-67 biomarker a strong predictor of outcome for prostate cancer patients

..."The relationship of Ki-67 to patient outcome is a continuous function, wherein the higher the percent of Ki-67, the greater the risk of an adverse result. In addition, Ki-67, along with PSA, Gleason score and stage, appears to be valuable in determining whether high-risk patients may be spared long-term andro...

World's largest scientific society holds regional meeting in Long Beach, Calif.

...ngs for specialty applications; and development of continuous slurry methods for economically advantageous computer controlled processing of paint manufacturing. Flavor chemistry presentation during the Oct. 16 luncheon at noon, by Sara J. Risch of Science by Design, Inc., Chicago, Ill. High school chemis...

Could a specific protein contribute to erectile dysfunction for the diabetic and obese?

...e right corpus cavernosum was cannulated to permit continuous monitoring of intra-cavernosal pressure (ICP) and the left corpus cavernosum was cannulated to allow for administration of vasoactive compounds. Bipolar electrodes were positioned on the right major pelvic ganglion (MPG) and, during the experiment, s...

Modern global warming more damaging than in the past

...said. Today, human activity has reduced previously continuous ecosystems to small fragments of natural habitat. ...f diversity in marked contrast to the more typical continuous neighboring mainland areas. Foufopolous says this process of species impoverishment foreshadows wha...

Monitoring malaria: Genomic activity of the parasite in human blood cells

...e cell) during the IDC is strikingly simple. It's continuous and clock-like progression of gene activation is reminiscent of much simple life forms such as a virus or phage while unprecedented for a free living organism. Virus and phage behave like a "just in time" assembly line: components are made only as ...

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