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Tag: "fuel" at biology news

Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality

...mission patterns and meteorology. For example more fuel is burned for heating and nitrogen dioxide persists longer in the atmosphere at that less sunny time of year - lasting around a day rather than hours, as in the summer. "Meteorology also plays a role. There is a peak before Christmas: this is not be...

Bugs expose underground carbon traffic system 10 times more important than fossil fuel burning

...nt of carbon moved around by the burning of fossil fuel but until now how this happens was at best poorly understood. Soil was almost literally a black box to scientists interested in carbon. Now researchers at the University of Warwick have been able to shed light in that black box by getting a particula...

Marathon of nano-sprinters

...the hydrolysis of ATP, which can be considered the fuel of the cell. Kinesin and dynein motors move along microtubules and myosins move along actin filaments. The step sizes of these motors are of the order of 10 nm. By stepping in a directed fash-ion along filaments, the motors pull cargo particles which...

Nano springs eternal; Protozoan 'engine' posts nano records

...ze-frame it, and to discern details of the calcium fuel system. Earlier research had identified a cellular protein, spasmin, as the possible calcium-responsive component of the stalk. "The Vorticella spasmins are now known to belong to the centrin family of calcium-binding proteins," says France. "Centr...

Are U.S. Flu Death Figures More PR Than Science?

...ze-frame it, and to discern details of the calcium fuel system. Earlier research had identified a cellular protein, spasmin, as the possible calcium-responsive component of the stalk. "The Vorticella spasmins are now known to belong to the centrin family of calcium-binding proteins," says France. "Centr...

Similar Stem Cells In Insect And Human Gut

...ze-frame it, and to discern details of the calcium fuel system. Earlier research had identified a cellular protein, spasmin, as the possible calcium-responsive component of the stalk. "The Vorticella spasmins are now known to belong to the centrin family of calcium-binding proteins," says France. "Centr...

Getting old? Slowing down? Blame inefficient mitochondria

...quivalent of power stations. A power station burns fuel to build up steam pressure and uses that pressure ...n turn generates electricity. In mitochondria, the fuel is oxidised and builds up a pressure of hydrogen ions (protons). These force through molecular turbi...

Poison + water = hydrogen. New microbial genome shows how

...ce. DOE, which funded the study, is pursuing clean fuel technologies. Little was known about this hydrogen-breathing organism before its genome sequence was determined. By utilizing computational analyses and comparison with the genomes of other organisms, the researchers have discovered several remark...

Animal models show that anabolic steroids flip the adolescent brain's switch for aggression

... ?already known to stimulate that area ?appears to fuel the engine of aggression. And, says Melloni, "Steroids step on the gas for agression." Thus, the neuroscientists conclude that the aggressiveness triggered by anabolic steroids, although reversible, may last long enough to create serious behavioral...

Carbon nanotube absorption measured in worms, cancer cells

...including pharmacology and for hydrogen storage in fuel cells, Weber said. But despite their promise, a big problem is that it's not known how multi-walled carbon nanotubes will impact the living environment, Weber said. "While everyone is concerned about this issue, there has been no really adequate wa...

Of mice, men, trees and the global carbon cycle

...ell known, as is the rate of emissions from fossil fuel burning. The rate of photosynthesis, in which carb.... "If all the carbon dioxide emitted from fossil fuel burning were to stay in the atmosphere, its rate of accumulation in the atmosphere would be two-and-...

There's something fishy about human brain evolution

...s daily energy needs. According to Dr. Cunnane, to fuel this neural demand, human babies are born with a built-in energy reservoir ?that cute baby fat. Human infants are the only primate babies born with excess fat. It accounts for about 14 per cent of their birth weight, similar to that of their brains. ...

Nano machine switches between biological and silicon worlds

...cells, into the microfluidics channel. This is the fuel for the motor. The motor then pulls the upright DNA strand through it until it reaches the magnetic bead, like a winch lowering a weather balloon. A Hall-Effect sensor can measure the vertical movement of the magnetic bead which indicates whether th...

Darkness unveils vital metabolic fuel switch between sugar and fat

...molecular switch in mammals that shifts the body's fuel consumption from glucose to fat and induces a stat...undergo a similar switch, burning glucose first to fuel their efforts, and as blood sugar is consumed, their bodies switch to burning fat. "How does the ...

Lactic acid not athlete's poison, but an energy source - if you know how to use it

...body to efficiently use lactic acid as a source of fuel on par with the carbohydrates stored in muscle tissue and the sugar in blood. Efficient use of lactic acid, or lactate, not only prevents lactate build-up, but ekes out more energy from the body's fuel. In a paper in press for the American Journal o...

'Word-vision' brain area confirmed

... of the existence of the VWFA that will surely add fuel to the debate." He concluded that "The single case study…provides compelling evidence that the VWFA plays a causal role in the chain of neural events that underlie normal reading." ...

USC, Rice to develop bacteria-powered fuel cells

...sity are joining forces to create bacteria-powered fuel cells that could power spy drones that fit in the ...ach to and interact with anode surfaces inside the fuel cell. Anodes are the parts of fuel cells and batteries that gather excess electrons for harvesting. ...

Biofuels can replace about 30 percent of fuel needs with significant research and policy effort

...ith research, 30 percent of current transportation fuel needs. But reaching that goal will require 5-10 years and significant policy and technical effort," said Dr. Arthur Ragauskas, a professor in Georgia Tech's School of Chemistry and Biochemistry and a lead on the project. While many think of ethanol ...

Taking evolution's temperature: Researchers pinpoint the energy it takes to make a species

... model. "It takes more energy than all the fossil fuel people burn on the planet in a year to form one new species of plankton," said Andrew Allen, Ph.D., the study's lead researcher at the National Center for Ecological Analysis and Synthesis at the University of California, Santa Barbara. "In terms of ...

Purdue creates new low-cost system to detect bacteria

... manufacturing and measuring the size and speed of fuel droplets in jet engines. "We adapted some ideas from that research to build a scatterometer for food safety, and now we're using the second generation of that instrument," Hirleman said. A major motivation for the research is to reduce the time i...

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