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Tag: "water" at biology news

New biofuels process promises to meet all US transportation needs

... concept, hydrogen would be harvested by splitting water molecules, possibly with a well-known method calle...her efficiency of generating hydrogen by splitting water molecules using solar energy to drive the electrolysis. Usually, the hydrogen in liquid fuels made f...

Failure to meet United Nations sanitation target could affect millions of the world's poorest

... lack access to a reliable source of safe drinking water and basic sanitation facilities. To address the pr...people without sustainable access to safe drinking water and basic sanitation by 2015. Target 10 was launched in 2000 as part of the U.N. Millennium Develop...

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

...s is a molecule of oxygen that is transformed into water and, in the process, generates energy in the form ... what makes CcO so efficient in reducing oxygen to water may even be useful to the study of fuel cells-very efficient power sources that convert chemical ene...

No carrier necessary: This drug delivers itself

...e HPPH is amphiphillic, i.e., partially soluble in water and oil, nanocrystals of it will self-assemble, that is, in solution the molecules aggregate, but not into such big clusters that they settle to the bottom. "It's a controlled formation of a colloidally stable suspension of nanosized crystals,?expl...

Global 'sunscreen' has likely thinned, report NASA scientists

...mpacts of a warmer climate ?the spinning up of the water cycle of evaporation, more cloud formation and more rainfall ?has not yet been observed. "Less sunlight reaching the surface counteracts the effect of warmer air temperatures, so evaporation does not change very much," said Gavin Schmidt of GISS, a c...

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

... blood filtration and could also be used to filter water and air. "For example this technology could be ...it a large flux or flow, it could also be used for water treatment, as well as within the pharmaceutical and food industries. Another benefit of the techn...

Scientists create dual-modality microbeads to improve identification of disease biomarkers

... for a very low virus concentration or a sample of water for a bioterrorism agent has always been a time-consuming and difficult process. Researchers at the Georgia Institute of Technology and Emory University have developed an easier and faster method to detect these types of target molecules in liquid sa...

Custom-made cancer cell attacks

...at makes Miscanthus so special? ''It uses less water per gram of biomass produced than other plants,'' he said. ''For example, to make a pound of alfalfa or spinach requires about 600 pounds of water, while to grow a pound of Miscanthus requires only about 200 pounds of water.'' According to Somervi...

Cellulosic ethanol: Fuel of the future?

...at makes Miscanthus so special? ''It uses less water per gram of biomass produced than other plants,'' he said. ''For example, to make a pound of alfalfa or spinach requires about 600 pounds of water, while to grow a pound of Miscanthus requires only about 200 pounds of water.'' According to Somervi...

Swell gel could bring relief to back pain sufferers

...is, once it enters the body - due to absorption of water by the particles. During their investigations, the research team injected the material into a damaged bovine intervertebral disc and increased the pH to biological levels by injecting an alkaline solution. Professor Freemont, who works in the D...

Birth rate, competition are major players in hominid extinctions

...ern humans did have the capacity to store food and water in the late Pleistocene. No evidence exists that Neandertal could store either. Both Neandertal and modern humans suffered from the primate curses of single births widely spaced. For Neandertal, cultural adaptation was not sufficient to overcome...

No sex for 40 million years? No problem

...n close proximity on the body of another animal, a water louse. One lives around its legs, the other on its chest, yet they have diverged in body size and jaw shape to occupy these distinct ecological niches. Our results show that, over millions of years, natural selection has caused divergence into distin...

Gene study shows three distinct groups of chimpanzees

...old. "Chimps don't swim," Becquet said. "For them, water provides a very effective border." The ongoing loss of habitat has increased the physical separation between the three groups. The extent of accumulated genetic difference enabled the researchers to speculate about when the different populations...

Living with water scarcity -- world must act now

Only if we act to improve water use in agriculture now will we meet the acute wate...most comprehensive and authoritative assessment of water and food ever written, critically examining policies and practices of water use and development in t...

Experience affects new neuron survival in adult brain; study sheds light on learning, memory

...exposed mice to the enriched cage first and then a water maze task. While both cases promoted new neuron s...that were exposed to the different experience (the water maze). The researchers also compared the number of neurons at four weeks and four months after i...

Turtles are loyal in feeding as well as in breeding

...ned in the same foraging grounds, moving to deeper water for the winter where they conducted dives of up to a record breaking 10.2 hours. Five females were also tracked when they nested again up to five years later and returned to the same foraging sites. Green turtles have been observed cropping sea gr...

Salamanders suffer delayed effects of common herbicide

...lion above the maximum allowable level in drinking water set by the U.S Environmental Protection Agency," said Rohr, who presented his findings at a recent workshop organized by the U.S Geological Survey in St. Louis, Missouri. "What this tells me is that we need to consider the long-term effects of che...

Biologically inspired sensors can augment sonar, vision system in submarines

...biological counterpart. "By detecting changes in water pressure and movement, the device can supplement sonar and vision systems in submarines and underwater robots," said Liu, who also is affiliated with the university’s Beckman Institute for Advanced Science and Technology, the Institute for Genomic Bi...

Baby fish 'smell their way home'

...osed tiny fish larvae in a tank to pure streams of water from four different reefs. To their amazement, wi...igh percentage of baby fish had congregated in the water flow from their home reef. "It was a lot more than you'd expect to happen by pure chance ?and it ...

Too much of a good thing? Excess nutrients or water limit biodiversity

... researchers applied combinations of nutrients and water to plots of grassland. Plots that received all of the resources had the fewest species and highest productivity. They combined this with analysis of the 150 year old Rothamsted Park Grass Experiment. Both supported their hypothesis. "Our results ...

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