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Tag: "air" at biology news

Air travel and flu: Post-9/11 restrictions delayed start of season

...ason in the USA has been shown to be influenced by air travel. After flights were restricted following th...ss large distances? If so, reducing or restricting air travel might be useful in the early stages of a serious global epidemic. Research at the Children's ...

Giant insects might reign if only there was more oxygen in the air

...bes increase in diameter or number to take in more air to handle the additional oxygen demands. The di...re is high, the insect needs smaller quantities of air to meet its oxygen demands. The tracheal diameter can be narrower and still deliver enough oxygen fo...

Seals protect brain, conserve oxygen by turning off shivering response on icy dives

Seals shiver when exposed to cold air but not when diving in chilly water, a finding that researchers believe allows the diving seal to conserve oxygen and minimize brain damage that could result from long dives. The researchers presented the study at The American Physiological Society'...

BC catalyst discovery promises faster, cheaper drug production

... and therefore minimizes waste, and can be used in air and can be recycled several times," Prof. Snapper added. "Together, these properties make our discovery an important one both from the theoretical as well as the practical point of view." "This is an elegant solution to a very important, practical p...

Environmental toxins may cause body's defenses to worsen lung disease

... cause of in-hospital infections, and acrolein, an air pollutant found in tobacco smoke, smog and diesel exhaust--to determine how cells respond to infection and toxicant-induced cell damage. "By looking at how the cells react to these stimuli, we hope to gain insight into what triggers and mediates th...

New technique boosts size of proteins that can be analyzed

...s through a heated capillary. Then they are hit by air molecules in low-energy collisions to keep the protein from folding up; then they are slammed with air molecules in high-energy collisions to dissociate the protein. Next, the mass spectrometer weighs an...

Researchers link ocean organisms with increased cloud cover and potential climate change

...le levels ?whether they originate from humans with air pollution or from biological activity. We can now see very strongly the influence of marine biology on oceanic clouds." Researchers had previously theorized that dimethyl sulfide (DMS) ?which is also emitted by phytoplankton ?affects the formatio...

Record ozone loss during 2006 over South Pole

...ons (CFCs), which have still not vanished from the air despite being banned under the Montreal Protocol (...t is kept cut off from exchanges with mid-latitude air by prevailing winds known as the polar vortex. This leads to very low temperatures, and in the cold ...

Lungs try to repair damaged elastic fibers

... "We've found elastin synthesis to increase in the air sacs (alveoli) and airways of the lungs of patients suffering severe or end-stage COPD," Woods explained. "This shows that the lung may be attempting to repair itself." The finding is important because it could pave the way to develop a drug to 't...

U of MN researchers turn cord blood into lung cells

...secreting surfactant, a substance which allows the air sacs in the lungs to remain open, allowing air to move in and out of the sacs. The cells are also responsible for helping to repair the airway afte...

Breathing easy: When it comes to oxygen, a bug's life is full of it

...s so efficient that resting insects stop taking in air as they release carbon dioxide, according to resea...chrotron x-rays to view working tracheal tubes and air sacs in living insects that give further clues to how the system works. Insects employ autoventilati...

Plants do not emit methane

... the researchers sampled the ‘heavy?methane in the air in which a large amount of plants were growing. Again, the measured methane emissions were neglible. Thus these plant specialists conclude that there is no reason to reassess the mitigation potential of plants. The researchers stress that questions s...

Bird flu -- Call for antiviral drugs to be shared

... Medicine, researchers use detailed information on air travel to model the global spread of an emerging influenza pandemic and its containment. They conclude that much will depend on the 'reproductive number' (a measure of how many people an infectious individual infects on average) of the new virus that...

Ocean's 'twilight zone' may be a key to understanding climate change

...e plants and transfer more carbon dioxide from the air to the deep ocean. "The twilight zone is a critical link between the surface and the deep ocean," said Ken Buesseler, a biogeochemist at Woods Hole Oceanographic Institution and lead author of the new study, which is co-authored by 17 other scient...

Hay fever can send work productivity down the drain

...- perfumes, sinus infections, exercise, dust, cold air ?even if a person doesn't have an allergy. “Diagnostic testing followed by the right kind of treatment may mean less time out of work,?she said. The study currently appears on the website for the Primary Care Respiratory Journal. Szeinbach a...

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

Indoor air purifiers that produce even small quantities of ozone may actually make the air dirtier when used at the same time as household cleaning products, scientists at UC Irvine have disc...

Microfossils unravel climate history of tropical Africa

...eveloped an entirely new proxy for the annual mean air temperature on land, based on molecules from the c...his can be explained by the strong relationship of air pressure to temperature. When the temperature of the sea surface is higher than that of the continen...

Scientists map air pollution using corn grown in US fields

Scientists at UC Irvine have mapped fossil fuel air pollution in the United States by analyzing corn c...sts typically measure carbon dioxide by collecting air samples, but this is the first time fossil-fuel-emitted carbon dioxide has been mapped using plants....

Deep in the ocean, a clam that acts like a plant

...light allows green plants to "fix" carbon from the air to build their bodies. Around hydrothermal vents deep in the ocean live communities of giant clams with no gut and no functional digestive system, depending on symbiotic bacteria to use energy locked up in hydrogen sulfide to replace sunlight. Now, t...

New sensor detects gaseous chemical weapon surrogates in 45 seconds

...one drop of liquid DIMP evaporate into a volume of air that would fill more than two Olympic-size swimming pools. "QPAS is an extremely sensitive and selective chemical detection technique that can be miniaturized and yet is still practical to operate in field environments," said Michael Wojcik, a res...

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