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Tag: "emit" at biology news

Soils offer new hope as carbon sink

...cientist Dr Lukas Van Zwieten said soils naturally emit about 10 times more greenhouse gas on a global scale than the burning of fossil fuels. "So it is not surprising there is so much interest in a technology to create clean energy that also locks up carbon in the soil for the long term and lifts agri...

Brightening prospects of using fluorescent nanotubes in medical applications

... says Hertel. These factors include: Nanotubes emit light in a very narrow range of wavelengths, or colors. This makes it easier to pick out their signal against background noise. Furthermore, they produce light in a part of the spectrum – the near infrared where skin and other tissue is transparent –...

In nature, proteins sweep up nanoparticles

...ley Lab) have discovered a world in which bacteria emit proteins that sweep up metal nanoparticles into immobile clumps. Their finding may lead to innovative ways to remediate subsurface metal toxins. The research, which appears in the June 15, 2007 issue of the journal Science, reveals that the proteins...

Electric fish conduct electric duets in aquatic courtship

...chyistius, a type of mormyrid electric fish, which emit weak electric fields from a batterylike organ in their tails to sense their surroundings and communicate their species, sex and social status with other fish. It is also the first study to successfully sort signals in electric fish based on sex. T...

A 'traffic light' for neurons means 'go' for improving brain research

...w lights in these patterns could compel neurons to emit messages that correspond to real neural instructions. In the future, this could allow researchers to test and tune sophisticated neuron behaviors. Much farther down the road, Deisseroth speculates, the ability to artificially stimulate neural signals...

Male reindeer inflate a large air sac in the neck region to emit their hoarse rutting calls

... for roaring with the head elevated, male reindeer emit a hoarse rattling with the head kept low. In this posture the inflated air sac expands the neck region. Both acoustic and optical display serve to deter rival males and thereby prevent fighting, allowing to conserve energy. Simultaneously, the perfor...

New biofuels process promises to meet all US transportation needs

... fuels from plant matter and coal, H2CAR would not emit carbon dioxide into the atmosphere. "The goal i... fuels from coal using conventional methods, which emit carbon dioxide. Because H2CAR would not emit this additional carbon dioxide, the process would elimi...

Bioluminescence at the service of a novel cerebral imaging technique

...e presence of its co-factor , coelenterazine, will emit light (a photon) when there is a change to the calcium concentration in a cell; for example, following neuronal activation. This makes it possible to follow neuronal activity in neurons, or even to trace it in a network of neurons. Furthermore, thi...

World's largest flower evolved from family of much tinier blooms

...ed, reek of decaying flesh, and in some cases even emit heat, much like a recently killed animal. These traits help the flower attract the carrion flies that pollinate it. "While it's surprising to find this giant plant evolved from a family typified by much smaller blossoms, rafflesia is unusual enough...

Mosquito repellents that emit high-pitched sounds don't prevent bites

...llents (EMRs) claim that the high pitch sound they emit repels female mosquitoes, and therefore protects people in the vicinity from bites and disease. To test these claims a team of Cochrane Researchers conducted a systematic review looking for trials conducted with EMRs. They located ten field trials...

Biodiesel won't drive down global warming

...instead used to grow trees, petroleum diesel would emit only a third of the CO2 equivalent emissions as biodiesel. Petroleum diesel emits 85% of its greenhouse gases at the final stage, when burnt in the engine. By contrast, two-thirds of the emissions produced by rapeseed derived biodiesel (RME) occur...

Bacteria research offers hope for new vaccine against meningococci

...hat the bacteria bind to. Marking the bacteria to emit light, the scientists used cameras to monitor their activities in the living mice during the course of the disease. “The bacteria are almost knocked out by the immune defense system, but then they resurge, this time with alterations in the surface...

In presence of fragrant cleaning products, air purifiers that emit ozone can dirty the air

...rticles, scientists found. Certain ionic purifiers emit ozone as a byproduct of ionization used for chargi...ing them to metal electrodes. Ozonolysis purifiers emit ozone at higher levels on purpose with the ostensible goal of oxidizing volatile organic compounds i...

Plants do not emit methane

...tively easy to detect. Thus, if plants are able to emit methane, it will contain the heavy carbon isotope and can be detected against the background of lighter carbon molecules in the air. Six plant species were grown in a 13C-carbon dioxide atmosphere, saturating the plants with heavy carbon. 13C-Meth...

German researchers develop first non-invasive test to measure skin aging

...es of laser infrared light to stimulate tissues to emit light at shorter wavelengths -- blue in the case of collagen, and green in the case of elastin. Since the upper layer of the skin, called the epidermis, is virtually transparent to infrared light, the infrared laser can reach the dermis with intense...

The first tree genome is published: Poplar holds promise as renewable bioenergy resource

... and lead author of the SCIENCE study. "Biofuels emit fewer pollutants than fossil fuels such as gasoline. In addition, poplar and related plants are vital managers of atmospheric carbon. Trees store captured carbon dioxide in their leaves, branches, stems, and roots. This natural process provides oppo...

Pure carbon nanotubes pass first in vivo test

...d Smalley, discovered that nanotubes fluoresce, or emit near infrared light. Because near-infrared light passes harmlessly into the body, biomedical researchers are keen to use carbon nanotubes for the noninvasive diagnosis and treatment of diseases such as cancer and atherosclerosis. In the current st...

Electric fish in Africa could be example of evolution in action

...cies. The electric fish -- known as mormyrids -- emit weak electric fields from a batterylike organ in their tails to sense their surroundings and communicate with other fish. Each species of mormyrid gives off a single characteristic electric impulse resulting in the flash of signals, indicating, for e...

Many cleaners, air fresheners may pose health risks when used indoors

... many common household cleaners and air fresheners emit toxic pollutants at levels that may lead to health...devices marketed as "air purifiers" that purposely emit ozone into the indoor environment.) The research team's first task was to determine which household...

Cell phone emissions excite the brain cortex

... million people in the world use cell phones which emit electromagnetic fields (EMFs). Though many studies have looked at the effects of EMFs on the body, few have focused on their effects on the brain. Such effects could be harmful, neutral, or beneficial and might be particularly important for individua...

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