News tagged with positive selection
Evidence of evolutionary selection found in 544 genes
Biology /
Sep 16, 2008 |
4.4 / 5 (46) |
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(PhysOrg.com) -- By comparing the genomes of humans and five other mammals, Cornell researchers have identified 544 genes that have been shaped by positive selection over millions of years of evolution.
Search results for positive selection
New tool in the fight against mosquito-borne disease: A microbial 'mosquito net'
Dec 24, 2009 |
4.5 / 5 (2) |
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Earlier this year, researchers showed that they could cut the lives of disease-carrying mosquitoes in half by infecting them with a bacterium they took from fruit flies. Now, a new report in the December 24th issue of Cell, ...
New materials designed to deal with hypersonic and supersonic hot stuff (w/ Video)
Dec 24, 2009 |
4.7 / 5 (9) |
7
University of Queensland researchers are testing new materials to withstand the extreme heat experienced by hypersonic vehicles in flight so they can fly for substantially longer.
Anti-inflammatory drugs interfere with aspirin's clotting ability
Dec 23, 2009 |
not rated yet |
1
A new study conducted at Ben-Gurion University of the Negev (BGU) reveals that Celebrex and other anti-inflammatory coxib medications may counter the positive effects of aspirin in preventing blood clots.
Broken genomes behind breast cancers
Dec 23, 2009 |
5 / 5 (1) |
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The first detailed search of breast cancer genomes to uncover genomic rearrangements is published today. The team characterised the ways in which the human genome is broken and put back together in 24 cases of breast cancer.
Psychologists show that future-minded people make better decisions for their health
Medicine & Health / Psychology & Psychiatry
Dec 23, 2009 |
4 / 5 (2) |
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When New Year's Eve rolls around and you're deciding whether to have another glass of champagne, your decision may be predicted by your perspective of the future.
Adjusting acidity with impunity
Chemistry / Analytical Chemistry
Dec 22, 2009 |
4.5 / 5 (2) |
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(PhysOrg.com) -- How do individual cells or proteins react to changing pH levels? Researchers at the MESA+ Institute for Nanotechnology at the University of Twente, The Netherlands, have developed a technique ...
Fish fatty acids don’t make you cleverer or happier
Dec 22, 2009 |
3.5 / 5 (2) |
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(PhysOrg.com) -- A diet rich in fish fatty acids has no effect on cognitive functions such as memory and concentration in the elderly. Nor does it affect their level of wellbeing. This is the conclusion drawn by Dutch researcher ...
Could acetaminophen ease psychological pain?
Medicine & Health / Psychology & Psychiatry
Dec 22, 2009 |
3.8 / 5 (5) |
1
Headaches and heartaches. Broken bones and broken spirits. Hurting bodies and hurt feelings. We often use the same words to describe physical and mental pain. Over-the-counter pain relieving drugs have long been used to alleviate ...
Accelerators and Light Sources of Tomorrow (Part 2: Accelerating with Light)
Dec 22, 2009 |
4.8 / 5 (6) |
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Accelerators are far from achieving the highest energies their builders aspire to, but size and cost may limit the kinds of facilities funding agencies can support. In the future, new kinds of machines will ...
New insight in nerve cell communication
Medicine & Health / Neuroscience
Dec 22, 2009 |
4 / 5 (1) |
0
Communication between nerve cells is vital for our bodies to function. Part of this communication happens through vesicles containing signalling molecules called neurotransmitters. The vesicle fuses with the ...
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