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Tag: "absorb" at biology news

Computer scientists unravel 'language of surgery'

...nguage" of surgery. This will require computers to absorb data concerning the best ways to complete surgical tasks. As a first step, the researchers have begun collecting data recorded by Intuitive Surgical's da Vinci Surgical Systems. These systems allow a surgeon, seated at a computer workstation, to guid...

Key to lung cancer chemo resistance revealed

...hat NRF2 detoxifies cells by directing proteins to absorb and pump out pollutants and chemicals. The NRF2 gene makes a "trigger" protein which starts the production of other proteins and enzymes that sweep the cell clear of toxins. To halt the detox process, proteins manufactured by KEAP1 bind to the NRF2...

Climate experts search for answers in the oceans

...ants that drift on or near the surface of the sea, absorb atmospheric carbon dioxide through photosynthesis and convert it into organic carbon. This process is known as primary production. While individually microscopic, phytoplankton chlorophyll collectively tints the surrounding ocean waters, providing a ...

Particle size matters to bacteria ability to immobilize heavy metals

...oparticles. When the iron oxides precipitate, they absorb the metals. When they dissolve, they release the metals. We see that larger particles are more quickly reduced and dissolved than smaller particles." The researchers have determined that for respiration the bacteria prefer larger nanoparticles ?abo...

Recurrence of a flu pandemic similar to infamous 1918 flu could kill 62 million

...in the developed world. The developing world would absorb the remaining 96 percent of deaths--an estimate that the researchers believe is actually conservative. "We all know that the poor tend to have higher mortality," said Murray, "but we never expected that so much of the cross-country and cross-comm...

Pollutant haze heats the Arctic

...et they were," Garrett says. (The more heat clouds absorb from the ground, the more heat they emit.) "Using sophisticated theory, we also used these data to estimate how much water the clouds had, and also the sizes of droplets in the clouds." A National Ocean and Atmospheric Administration research st...

Corals switch skeleton material as seawater changes

...al reefs also serve a more practical purpose: They absorb wave energy generated by hurricanes and other severe tropical storms. "Ironically, the same factor that is likely causing such storms to increase in intensity ?global warming ?is also causing the corals to bleach (lose their symbiotic algae) and die...

Gut microbes' partnership helps body extract energy from food, store it as fat

...ake energy available in forms that the mouse could absorb and use. The result was that mice colonized with both organisms had significantly more fat than animals colonized with either microbe alone. M. smithii also benefited ?thanks to B. thetaioatomicron, it received increased amounts of formate, a prod...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

... It is noteworthy that the entrapped cells easily absorb other nano-components inserted at the cellular interface. Because of this, the cell can internalize new DNA (introduced as a plasmid), providing an efficient form of genetic modification of cells without the usual procedures of heat shock or cumberso...

Radiation-armed robot rapidly destroys human lung tumors

...intense, focused x-ray beams, causing the tumor to absorb approximately 10 times more radiation than in a conventional radiotherapy session. Cyberknife can deliver so much more radiation than other techniques because its robotic arm aims the x-rays precisely enough to avoid surrounding healthy tissue. T...

Bacteria beat the heat

...t will not only provide more biomass per acre, but absorb more of the greenhouse gas, carbon dioxide, as well."...

NASA study solves ocean plant mystery

...of fluorescence. Fluorescence occurs when plants absorb sunlight and some of that energy is given back off again as red light. Scientists looked at approximately 140,000 measurements of fluorescence made from 1994 to 2006 along 36,040 miles of ship tracks. They found that phytoplankton give off much more ...

Rice scientists make first nanoscale pH meter

...eat precision and the metal shells can be tuned to absorb or scatter specific wavelengths of light. To form the pH sensor, Halas' team coated the nanoshells with pH-sensitive molecules called paramercaptobenzoic acid, or pMBA. When placed in solutions of varying acidity and illuminated, the nanoshell-molec...

Radiotherapy advance points way to noninvasive brain cancer treatment

... medicine," De Stasio says. "In this effect, atoms absorb photons and emit electrons. The emitted electrons are very destructive for DNA, but have a very short range of action. Therefore, to induce DNA damage that the cancer cells cannot repair, and consequently cell death, gadolinium atoms must be localize...

Plants used to detect gas leaks, from outer space!

... underground reservoirs then it can't be acting to absorb heat in the earth's atmosphere. "Our own research attempts to address some of the issues related to public acceptability and safety: Will there be leaks? What environmental effects will any leaks have? Can we detect leaks?" says Steven. ...

A bathroom that cleans itself

...her elements such as iron and nitrogen so they can absorb light at longer wavelengths. Lab trials show that glass coated with the new nanoparticles can be activated by visible light from a lamp to kill Escherchia coli. "If you've got this on tiles or shower screens you don't need so many chemical agents,"...

Gut protein found to protect against infection and intestinal breakdown

...ia a duct, contains harsh acids that help the body absorb nutrients, kill certain bacteria and help keep intact the lining of the intestine, a major barrier against the infiltration of infectious microorganisms. That's no small task; if the innermost lining of the small intestine alone were unfolded, it wou...

Study: Competition for sex is a 'jungle out there'

...ine and may be a source for future cures ,and they absorb huge amounts of carbon dioxide and generate volumes of clean oxygen. Our research suggests that plants in these areas area also very fragile. They already suffer from low pollen receipt, and future perturbations of the habitat may exacerbate the si...

World's pledge to halve hunger by 2015 looks like empty promise

...ltural employment, particularly in urban areas, to absorb rural migration. ...

Rice bioengineers pioneer techniques for knee repair

...cartilage that sit between the femur and tibia and absorb the compressive shock that the bones undergo during walking and running. Over the past 18 months, he and his students Adam Aufderheide and Gwen Hoben have perfected methods of growing meniscus-shaped pieces of cartilage, but they are still trying to ...

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