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Tag: "power" at biology news

Compound eyes, evolutionary ties

...d. "These results help illustrate the beauty and power of evolution and show how 'little steps'--like the presence of a single structural protein--can so spectacularly account for major changes in form and function," said Charles Zuker, a professor of biology and neurosciences at UCSD and a Howard Hughes...

Discovery in the evolution of the immune system absorbing cells

...researchers demonstrated the great versatility and power of the innate immune response of the complement system in lower vertebrates, whereas mammals have developed greater effectiveness and specialisation in the adaptive mechanism of antibodies....

Anticipation plays a powerful role in human memory, brain study finds

... and psychology. "Our study illustrates how the power of expectancy can extend to memory formation as well," says Nitschke, also an associate of UW-Madison's Waisman Laboratory for Brain Imaging and Behavior. "Just the expectation of seeing something bad can enhance the memory of it after it happens." ...

Eating protein boosts hormone that staves off hunger

...ss strategy is therefore to increase the satiating power of the diet and promote weight loss through the addition of dietary protein--harnessing our own satiety system. "Such a diet is perhaps more typical to that of our hunter-gatherer ancestors," she added. The average Western diet derives 49% of ene...

The power of one: A simpler, cheaper method for cell fusion

...Lu's technology, on the other hand, uses a $100 DC power supply, which, unlike the specialized generator, can be used to power other laboratory equipment. And because of its microscale dimensions, Lu said his technology require...

Powerful genome ID method extended to humans

...n, Shiguo Zhou, co-authored the PNAS paper. The power of optical mapping lies in its ability to reveal the size and large-scale structure of a genome. The method uses fluorescence microscopy to image individual DNA molecules that have been divided into orderly fragments by so-called restriction enzymes....

Researchers in Montréal and the US create model of key immune-system component

...It is exciting to see that systems biology has the power to unravel how the phagosome works by revealing the intricately woven roles of all the molecules involved in killing infectious agents," says Joel Bader, Ph.D., Assistant Professor of Biomedical Engineering and a member of the High-Throughput Biology...

Rising ocean temperatures, pollution have oysters in hot water

... and oxygen demand. Temperature plus cadmium = power disruption However, there was no difference in...he oyster's cells. The mitochondria are the cell's power plant, producing energy for the oyster, including for ventilation and circulation. "We found that...

Did 'ABCs' cause Uganda's fall in HIV rates?

...theless, they say, many women in Uganda had little power at the outset of the AIDS epidemic. "Fortunately," say Murphy and Greene, "a 'this could not work here' attitude did not deter Uganda from moving forward to implement its wide-ranging HIV prevention program and adding gender-related elements when it ...

Engineer ramps up protein production, develops versatile viral spheres

...nthesis and used in many organisms, can be used to power cell-free protein synthesis. "We are delighted to honor Professor Swartz with the Gaden Award this year," says journal Editor Douglas S. Clark, a chemical engineering professor at the University of California-Berkeley. "His paper has been recognize...

Ferns provide model for tiny motors powered by evaporation

...ate a novel energy scavenging device that uses the power of evaporation to move itself---materials that cou...r. The ideal application, Borno said, would be to power a remote sensor where it's impossible to change the batteries regularly. ...

Researchers image molecular motor structural changes

...(ATP), the source of energy in all cells, into the power necessary to move along the microtubules. "In order to visualize the actual structure of the motor molecule bound to a microtubule, we combined the images generated by high-resolution electron microscopy," said study investigator Sharyn Endow, Ph.D....

Researchers discover key mechanism by which lethal viruses Ebola and Marburg cause disease

...ethod for discovering this protein underscores the power of bioinformatics for addressing the challenges of emerging infectious diseases. The investigators are currently exploring whether insights derived from understanding the potency of these immunosuppressive peptides can be exploited to treat autoimmu...

Mayo Clinic: Gene expression profiling not quite perfected in predicting lung cancer prognosis

...ot stable and little is known about the prediction power of a gene expression profile as compared to well-known clinical and pathologic predictors," according to Ping Yang, M.D., Ph.D., the corresponding author of the study that appears in the November issue of Cancer Epidemiology, Biomarkers and Preventio...

A natural chemical found in strawberries boosts memory in healthy mice

... hated greens often go the way of Barbie dolls and power rangers. Now, there's another reason to reach for colorful fruits past adolescence. Fisetin, a naturally occurring flavonoid commonly found in strawberries and other fruits and vegetables, stimulates signaling pathways that enhance long-term memory,...

MIT designs portable 'lab on a chip'

... developed a micropump which requires only battery power (a few volts) to achieve similar flow speeds and also provides a greater degree of flow control. The key to boosting energy efficiency is altering the electric field in the channel, Bazant said. Instead of placing electrodes at each end of the chan...

Biofuel cells without the bio cells

...s up the possibility of shrinking biofuel cells to power small electronic devices, Squier said. Whole-organism biofuel cells require engineers to design a space-adding membrane that prevents unwanted reactions between fuel, the charge-transporting agent and the electron-accepting metal, the latter being th...

Dragonfly's metabolic disease provides clues about human obesity

...single flight muscles and measure their mechanical power output under conditions similar to those in nature. The researchers noted that the muscles of some dragonflies are able to perform at 80 watts per kg. while others of the same species could perform at up to 220 watts per kg. The life of a dragonfly...

Coral reefs are increasingly vulnerable to angry oceans

...niversity. How coral assemblages respond to the power of the sea is essential for understanding the natural distribution of coral types on present-day reefs as well as for projecting how they will change in response to more violent or frequent storms, according to the researchers. "Our study offers a...

PLoS ONE is launched by the Public Library of Science

...f PLoS ONE is impressive in its own right, but the power of this project really lies in what happens after publication. In almost all other journals, publication of a research paper is a full stop. The next significant step forward will be the publication of another paper following on from the previous wor...

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