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Tag: "air" at biology news

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

...ain conditions, many common household cleaners and air fresheners emit toxic pollutants at levels that ma...the last decades on controlling the big sources of air pollution and on the chemicals in consumer products that contribute to outdoor ozone formation. Howe...

Microbes hitchhike across Atlantic on desert dust

...s on the study. Griffin and his colleagues tested air samples on a research ship in the middle of the Atlantic Ocean during May and June 2003 to determine if airborne, viable populations of bacteria and fungi could be detected and also to see if total population counts increased with the presence of air...

Viagra improves high altitude exercise performance up to 45% for some

... session. The simulation did not include the lower air pressure that would occur at altitude, Friedlander said. Researchers analyzed the changes in each individual's performance under various exercise conditions and also compared the group's performance under different drug conditions. Responders vers...

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

...an electron microscope, and it doesn't shrink when air is evacuated from the microscope chamber." The cell can be immediately imaged, says Brinker. "Spin-coating" refers to deposition of the cell slurry on a spinning substrate until dry. From their comfortable "home," the empowered cells can also dir...

Magnetism and mimicry of nature hold hope for better medicine, environmental safety

...od and other biological fluids because the trapped air between the wires never allows for much of the fluid to come into contact with the surface," Garcia says. That is crucial to accurate analysis because it prevents the chemicals and other materials in the droplet from combining and reacting with the...

Research reveals inner workings of immune system 'thermostat'

... is that these compounds ?which act as furnace and air conditioner ?battle it out over control of the sys...he system. But what controlled Interleukin 10, the air conditioner? To find out, Yap and his team conducted a series of experiments in mutant mice infect...

Tiny airborne particles are a major cause of climate change

...serve as the seeds around which water vapor in the air condenses, forming tiny water droplets that rise as they release heat. As the small droplets rise, they collide and merge with larger droplets. When the droplets reach a critical size, gravity takes over, causing them to fall from the cloud in the fo...

Study links high levels of nitric oxide to infertility and sperm DNA damage

...Dr Amiri did not rule out the role played by NO in air pollution. "Our next step is to identify the role of some environmental factors such as air pollution, jobs, disease and smoking on over-production of NO in infertile males. We also want to fi...

Blood test predicts success of quitting smoking using the nicotine patch

... Measurements of carbon monoxide levels in exhaled air identified those who were not smoking at the eight-week and six-month intervals following the quit date. Study participants also provided information on level of cravings for cigarettes one week after their quit date. "Using the rate of nicotine me...

Flick of whiskers helps tease out brain's 'shadow' signaling system

By blowing gentle puffs of air onto a mouse's whiskers and watching how its brain...formation their whiskers send its way ?a change in air current might indicate a nearby predator, for instance, or a certain texture might indicate a yummy ...

What's nature worth? New computer models tell all

Breath in. The air is free. But we'd all agree it's not worthless. So...ystem services that are either indispensable--like air to breath--or exceedingly subtle--like global climate regulation. "Instead, we're looking for eff...

Dolphins at risk

...k area. Other innovative ideas include creating an air bubble curtain and creating a ramped warning signal to give dolphins time to leave the area before work commences. Dr David also calls for further research into the reactions of marine mammals to industrial noise to help mitigate future effects in ...

South Pacific plant may be missing link in evolution of flowering plants

...k area. Other innovative ideas include creating an air bubble curtain and creating a ramped warning signal to give dolphins time to leave the area before work commences. Dr David also calls for further research into the reactions of marine mammals to industrial noise to help mitigate future effects in ...

New flood-tolerant rice offers relief for world's poorest farmers

...respiration. Because the submerged plants lack the air and sunlightthey need to function, growth is inhibited, and the plants will dieif they remain under water for more than four days. During any given year, yield losses resulting from flooding in theselowland areas may range from 10 percent to total ...

Airborne mold spores increase kids' risk for multiple allergies

... a certain group of fungal spores--abundant in the air that we breathe every day--can make young children...erally thousands of different types of mold in the air we breathe," adds Melissa Osborne, a graduate of UC's environmental and occupational hygiene program...

Plants tell caterpillars when it's safe to forage

...- volatile organic compounds that evaporate in the air - that attract the forager's natural enemies. This strategy is obviously no use against a cow, but proves effective when the offender is a caterpillar and the summoned predator is a wasp. Just how much control such biotic factors exert over a forager...

Scientists reverse evolution

...rted into the Hoxa1 gene. In response to a puff of air in the face, they couldn't blink their eyes, wiggle their whiskers and fold back their ears. But when a portion of the Hoxb1 regulatory sequence was inserted into Hoxa1, the new gene performed the jobs of both genes. Mice born with the combined ge...

UCI scientists find chlorine may contribute to ozone formation

Standard methods of predicting air pollution don't take atmospheric chlorine into acc.... Chlorine salts are naturally present in coastal air in sea salt aerosols, which are swept from the ocean into the air by the wind. Chlorine gas also is ...

Biofuels researcher searches for new sources

...ugars. "Biomass energy can contribute to cleaner air through reduction in greenhouse gas emissions. It can alsoimprove rural economies, and reduce energy dependence on foreign petroleum oils," said Ralph Peck, director of the Institute for Biobased Products at MSU. The institute has funded Chen's rese...

The brain, traffic and nano-circuits -- e-Science takes on major challenges

...affic Traffic makes a significant contribution to air pollution in inner cities. Governments devise pol...affic management schemes to minimise the impact of air pollution. More detailed knowledge of how traffic-generated pollution behaves in the urban environm...

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