Tag: "air" at biology news
'Lighter than air' breathing more than doubles COPD patients' exercise endurance
...ly in advanced stages. So maybe "lighter than air" air
would be easier to breath, reduce shortness of bre...only 4.2 minutes for 12 patients breathing regular air
(79% nitrogen/21% oxygen). And the exercise involved wasn't trivial: The subjects cycled "until exha...
New method to measure ancient land elevation developed by Field Museum scientist
...s.Anyone who has climbed a mountain knows that the air
gets "thinner" as you climb higher. As with oxygen...in can estimate how much carbon dioxide was in the air
when the fossil leaf developed. From that, she can estimate the elevation at which the fossil plant ...
Fragmented habitats no ultimate refuges for forest-dwelling tropical birds
...ffer because they're not getting the flow of moist air
off the land." While deforestation affects other kinds of animals -- ranging from mammals to insects -- the scientists focused on birds because "we know birds very well," Pimm said. "The Atlantic Coast Forest has 200 species of birds found only there...
Revisiting the vertebrate invasion of the land
...species that use either or both terrestriality and air
breathing. Research findings include: The first d...tion at different points in the life history, with air
emergence early in the life cycle and a return to water at hatching. With regard to excretory nit...
Multidrug-resitant bacteria found to be airborne in concentrated swine operation
...o antibiotic-resistant bacteria from breathing the air
from concentrated swine feeding facilities, accord... bacteria resistant to at least two antibiotics in air
samples collected from inside a large-scale swine operation in the Mid-Atlantic region of the United...
Stanford biologist working to restore native forests to Hawaii
...ad-leafed canopy that can draw moisture out of the air
more efficiently. Koa forests also can help suppress the spread of fires and control flooding locally, she said. They also can store carbon-helping to stabilize the climate globally. These benefits are what Daily and others refer to as "ecosystem ser...
UCSB makes important advances in studies of retinal detachment
...d refinements of these results. Normal room air
has about 21 percent oxygen. In these first studies, the effects of oxygen were examined under "ideal" conditions. That is, oxygen therapy at 70 percent was begun immediately after creating a retinal detachment. However, these ideal conditions would ...
NASA's aura satellite sheds new light on air quality and ozone hole
...ow-level ozone and many other pollutants affecting air
quality. For the first time, Aura will help scie...il DeCola of NASA Headquarters, Washington. "Clean air
is a vital need, and air
quality is not merely a local issue. Pollutants do not respect state or nat...
The secret life of acid dust
SAN FRANCISCO--Dry dust reacts with air
pollutants to form dewy particles whose sunlight-r.... "Calcite-containing dust particles blow into the air
and encounter gaseous nitric acid in polluted air
from factories to form an entirely new particle of...
Hummingbirds lose power at high altitudes
...bilities are affected by the lower oxygen and thin air
of higher elevations. The results, which appeared this week in the Proceedings of the National Academy of Sciences (PNAS) Online Early Edition, show a clear decline in hummingbirds' lifting ability with altitude, not unlike that seen in athletes comp...
NASA study finds tiny particles in air may influence carbon sinks
...nfluence how much carbon gets transferred from the air
into belowground carbon sinks. Carbon dioxide acts...re able to measure the exchange of CO2 between the air
and an ecosystem. But aerosols did not dramatically cut the amount of radiation that reached Earth'...
Mercury on the horizon
...ll off, decay and mercury goes back into the soil, air
and, ultimately, water. According to Mae Gustin, ...vels of naturally occurring mercury, can be in the air
for six to 12 months and can cross continents. "Researchers who model how mercury travels through th...
Chemical process developed to use cotton gin residue
...an be a hazard, and if it burns, can contribute to air
pollution. "We have been able to develop the manufacturing processes that can extract specific chemicals and make two products ethanol, which can be a fuel in automobiles, and xylitol, a sugar. "Our work shows a manufacturing process for extra...
Hospital epidemiologists trace outbreak of organism to commonly used wound care equipment
...prayed the potentially dangerous bacteria into the air
and onto surfaces in an open treatment room, with other patients nearby. "This was true even though staff correctly followed procedures for its use," added Perl. "Germs were spread when patients and staff came in close contact with each other during...
Urban ecology study witnessing the birth of a 'designer ecosystem'
...on of the urban ecosystem on numerous fronts. From air
quality to birds and bugs and plants to water quality and usage, to landscaping choices, climate, economics, zoning, pets we are considering everything that is part of the ecosystem." One of the most interesting things that has been revealed is the s...
Winter biological processes may help spread shrubs in the Arctic
...e abundant in the Arctic over the past 30 years as air
temperatures have increased, a change that is likely to affect the grazing of caribou and the communities that rely on them for food. According to an article in the January 2005 issue of BioScience, a variety of evidence now suggests that winter bio...
NIST/EPA study aims at healthy indoor climate
... underventilation, a condition that can cause poor air
quality, occupant discomfort and even illness, as ...xisting U.S. building stock with respect to indoor air
quality, ventilation and occupant perceptions of environmental conditions. NIST's analysis and the o...
Backcountry water quality tests are good news for campers
...d water quality is thought to be poorer; Valley air
pollution could be contributing to water quality problems in the Sierra Nevada. ...
Gene sequencing explains bioremediation 'bug'
...r to hasten the process. Some cleanup sites are on air
force bases and naval air
stations, which explains why the Department of Defense has been interested enough to fund the resear...
Scientists find that the human nose is more complicated than a jumbo jet
...earch Council (BBSRC) have not only discovered how air
moves through the nose bringing you those smells b...pattern through the nasal cavity to work out where air
goes when you breathe in. Tiny coloured beads circulate through the model nose to simulate airflow a...
1 2 3 4 5 6 7 8 9 10