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Tag: "advantage" at biology news

Species unique to tidal marshes face threats

...gray or black in color, which is believed to be an advantage because it matches the dark color of the soils often found in tidal marshes. Why endemic tidal marsh species seem to be largely restricted to North America--which has 24 of the worldwide total of 25--is not clear. Although it could reflect differing ...

Research offers new hope for preterm babies

...e. "Our new near-infrared spectroscopy is a huge advantage for our research. As blood pressure is a constantly-changing, dynamic process, it is vital for us to be able to monitor the changes in brain oxygen levels continuously. With the machine we were using up until now, there was a high risk we were missin...

Researchers to develop ultra-miniature implantable sensors to measure blood flow

...es from 40 microns to 120 microns in diameter. The advantage of such tiny, implanted sensors is that they can provide separate readings for particular organs in a patient. They also can be unobtrusively implanted in patients who require constant physiological monitoring. Transonic Systems already produces min...

Where have all the butterflies gone?

...f most butterflies, so they did not emerge to take advantage of early warm weather in February. Then March turn...d several times a year may rebound quickly to take advantage of improving conditions. But for species with only one brood per year, a catastrophic season will ha...

Scientists discover new regulating mechanism in cells

...prone to resistance.) "Retroviruses seem to take advantage of RHA to enhance production of their own proteins, and cells use it to control the amount of particular proteins they make, many of which are involved in growth control," says Boris-Lawrie. "The cell has to keep tight control of these proteins to ...

Do angry men get noticed?

...y male faces; in short, angry men get noticed. The advantage for detecting angry male faces is consistent with the notion that human perceptual processes have been shaped by evolutionary pressures arising from the social environment. ...

3-D ultrasound scanner could guide robotic surgeries

...curacy." The 3-D ultrasound scanner also has the advantage of seeing the interior of organs, Smith said. Optical laparoscopes, in contrast, provide surgeons only a view of organs' outer surfaces. "Two-dimensional laparoscopic ultrasound has seen increased use as a surgical aide in general, gynecological an...

Alarming decline in Nepal's rhinos and tigers in former Maoist stronghold

...is significant decline is due to poachers who took advantage of the absence of antipoaching patrols in this cri... "The results are discouraging, but WWF will take advantage of a new climate of peace to revisit and revamp strategies for antipoaching operations, forge new pa...

UCSD study reveals how plants respond to elevated carbon dioxide

...n response to increased carbon dioxide may have an advantage for the plant. "Even if a plant closes its pores a little in response to increasing atmospheric carbon dioxide, it would still have access to carbon dioxide," said Schroeder. "On the other hand, less water would be escaping through the pores, so th...

Study of gene transfer for erectile dysfunction shows promise

...ed 30 to 40 percent of men with ED. A possible advantage of gene transfer is that a single treatment could last for months. In the current study, improvements were maintained through the 24 weeks of study. The study was conducted from May 2004 to May 2006 at Mount Sinai School of Medicine and New York U...

Key gene controlling eye lens development identified

... The St. Jude team overcame this problem by taking advantage of Cre/loxP-technology, which allowed them to choose the time and place in which to remove Six3 function from specific cells. This permitted the investigators to remove Six3 activity from the presumptive lens ectoderm (PLE)--the area of the developin...

Protowings may have helped bird ancestors cover rough terrain

...ngs in this way, they would presumably have had an advantage when pursuing prey and escaping from predators. Dial and colleagues performed experiments on several species of juvenile galliform (chicken-like) birds, concentrating on chukar partridges. Chukars can run 12 hours after hatching, but they cannot fl...

Scientists work to identify genes that contribute to early heart attack risk

...ase," said Herrington. The researchers will take advantage of data from two large-scale studies: LSU Health Sciences Center’s Pathobiological Determinants of Atherosclerosis in Youth (PDAY) study and the Multi-Ethnic Study of Atherosclerosis (MESA). Using DNA data from the PDAY study, the scientists will ...

How many genes does it take to learn? Lessons from sea slugs

...Whitney Laboratory for Marine Bioscience. "We took advantage of this powerful model of neurobiology and identified thousands of genes operating within a single neuron. Just during any simple event related to memory formation, we expect differences in gene expression for at least 200 to 400 genes." Researche...

Female pronghorns choose mate based on substance as well as show

...e likely to survive to weaning, Byers found. "This advantage is due to faster growth rates," he said. Byers a...equently chosen males continued to have a survival advantage for as long as five years. ...

Complexity constrains evolution of human brain genes

...rain function and evolution will increasingly take advantage of the approaches of systems biology, Wu suggested. "The slowdown in genetic evolution in the more advanced organs makes sense," he said, "only when one takes a systems perspective."...

For super-obese patients, duodenal switch beats gastric bypass

...he duodenal switch appears to offer a considerable advantage in terms of the amount and possibly the duration o...uodenal switch without demonstrating a significant advantage over the gastric bypass, which is generally a very effective operation in severely obese patients. O...

Researchers reveal mystery of bacterial magnetism

...c field. "Therefore," concludes Dr. Whitman, "the advantage to these bacteria in nature must be very small." "But over millions of years, this very subtle advantage has somehow produced bacterial magnetism." ...

Study offers innovative profile of enzyme that aids tumor growth

...ate within larger metabolic networks. A primary advantage of metabolite profiling in natural biological systems is that it circumvents some of the most time-consuming steps that accompany in vitro enzyme analysis while generating data more directly related to their naturally occurring activities. "Our hy...

Technology for monitoring fetal oxygen during labor offers no apparent benefit

...l oxygen saturation monitoring offered no apparent advantage in interpreting the meaning of abnormal fetal heart rates," said Catherine Spong, M.D., an author of the study and Chief of NICHD's Pregnancy and Perinatology Branch. "Abnormal oxygen readings were common among babies showing abnormal heart rates bu...

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