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Tag: "efficiency" at biology news

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

...can't enter blood cells as efficiently, and if the efficiency of heme binding is pushed in the wrong direction, they can't prevent heme from crystallizing. "We know these mutant proteins are controlling pH across two different membranes, but we don't yet know exactly how they are doing it," Roepe says. "Still, ...

Brightening prospects of using fluorescent nanotubes in medical applications

...s containing trillions of nanotubes with a quantum efficiency of 1 percent, a factor of 100 better than previous...rs had expected this approach to boost the quantum efficiency by five to ten times. The fact that the improvement was considerably larger – 20 to 100 times – came...

Researchers examine carbon capture and storage to combat global warming

...the greenhouse gas issue,'' said Zoback. Energy efficiency and renewable energy are already feasible today and also can define the long-term energy picture, he said. ''[Carbon dioxide] sequestration, on the other hand, is only a bridge technology,'' he added. ''Maybe we have another hundred years of using...

Undergraduate research shows leaderless honeybee organizing

... organized societies that function with remarkable efficiency -- but they are organized so differently when you start digging into them,” Schneider said. “It’s interesting that these major differences can result in the same emergent social properties. It may tell us something about ourselves.” ...

Researchers discover 'acquired' DNA key to certain bacterial infection

... environmental host,” Bermudez said. “In fact, its efficiency is close to zero. But with this ‘island’ of acquired genetic material, the bacterium finds a way to get inside the cells and it takes control, not the phagocyte.” Phagocytes are cells that engulf and digest pathogens and cellular debris, and in hu...

Fat fish put obesity on the hook

...asis of disease. This may ultimately increase the efficiency and power of the drug discovery process, thus bringing new medicines to the market faster and cheaper.” In the study, researchers caused obesity in zebrafish by introducing the same type of genetic mutation that causes severe obesity in humans. Th...

Detecting cold, feeling pain: Study reveals why menthol feels fresh

...h surfaces below 10 degrees C, though with reduced efficiency -- the next step, says Julius, will be to illuminate this residual aspect of cold sensation. The finding is the latest of a series of discoveries led by the Julius lab on the molecular mechanisms of temperature sensation and pain. In 1997, the lab...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

...acity is affected by changes in the photosynthetic efficiency of the algae, which in turn is linked to the environmental conditions experienced by these organisms in their environment." The ecology of picoeukaryotes, said Moreau, has thus become an intense field of investigation over the last decade as thes...

Protein enables discovery of quantum effect in photosynthesis

...is wavelike characteristic can explain the extreme efficiency of the energy transfer because it enables the system to simultaneously sample all the potential energy pathways and choose the most efficient one." Fleming is also a professor of chemistry at UC Berkeley, and an internationally acclaimed leader in...

Alien plants attack using 'resource conservation' as weapon, researchers say

...scientists were able to determine the resource-use efficiency for each plant. "Invasive plants were more efficient on short-time scales, but overall there was no difference in the long term," Funk said. "We were surprised that the invasive plants were not at a disadvantage under conditions where resources we...

Human's ecological footprint in 2015 and Amazonia revealed

...he global human footprint. "Increasing energy efficiency to counteract these impacts is feasible, but would...s. "China would need to improve its technical efficiency at a rate of about 2.9 percent per year, and India by about 2.2 percent per year to offset the proje...

Fitness has fallen since the days of Ancient Greece

...p over a range of different speeds to estimate the efficiency of the human engine of the warship. The research is published in New Scientist today (February 8). By comparing these findings to classical texts that record details of their endurance, he realised that the rowers of ancient Athens -- around 500BC...

Scientists clone mice from adult skin stem cells

... in nuclear transfer with adult cells has been its efficiency ?out of a hundred attempts, only a handful may suc...cess rates never reaching into double digits. "The efficiency of nuclear transfer is very low," says Li. "Using purified adult skin stem cells as our source of nu...

New biofuels process promises to meet all US transportation needs

... the formation of carbon dioxide and increases the efficiency of the process, making it possible to produce thre...d would be needed is because of the overall higher efficiency of generating hydrogen by splitting water molecules using solar energy to drive the electrolysis. Us...

Researchers create artificial enzyme that mimics the body's internal engine

...According to Devaraj, CcO has more than 99 percent efficiency in transforming oxygen into water. To understand why CcO is so efficient, Collman's group, led by Stanford research associate Richard Decreau, created an artificial version of the enzyme active site using organic compounds as building materials. T...

QUT scientists on the way to sifting out a cure for HIV

...embrane texture which is crucial to the separation efficiency of the material," he said. "It is scientificall...h current ceramic membranes, while maintaining the efficiency of capturing over 96 per cent of the unwanted particles." Dr Zhu said the membranes, which have b...

Custom-made cancer cell attacks

...il can be converted to biodiesel with a quite high efficiency and very low capital investment. But is it worse for the environment than climate change? That's the question.'' According to Somerville, ''Climate change threatens biodiversity more than anything that I know. For example, in British Columbia they...

Cellulosic ethanol: Fuel of the future?

...il can be converted to biodiesel with a quite high efficiency and very low capital investment. But is it worse for the environment than climate change? That's the question.'' According to Somerville, ''Climate change threatens biodiversity more than anything that I know. For example, in British Columbia they...

Making mice with enhanced color vision

...toreceptor absorbs a range of wavelengths, but the efficiency changes with wavelength," Nathans explains. "For example, one photoreceptor might absorb green light only half as efficiently as red light. If an animal had only this type of photoreceptor, then a green light that was twice as bright as a red light ...

Stem cell identity in culture may strongly depend on the cellular microenvironment

...le to research strategies that aim to increase the efficiency of stem cell-related culture methods and, perhaps, even to develop stem cells from already differentiated cells instead of using embryos. ...

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