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Tag: "air" at biology news

CO2 sensing proves critical for fungal pathogens to adapt to life in air and human hosts

...han 150-fold higher (5%) than it is in atmospheric air (0.033%). Consequently, C. albicans and C. neoform...s the human host (a high-CO2 environment) from the air (low CO2) in the course of causing deadly fungal meningitis. The authors found that an enzyme called...

Wright bros. upstaged! Dinos invented biplanes

...ength and flexibility to the feather and prevented air from passing through it in flight. Some present-day birds, especially raptors as well as the earliest Jurassic bird Archaeopteryx, also have (or had) feathers on their legs, Chatterjee says. But these are not flight feathers and appear adapted to s...

Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality

...AMACHY) on Envisat to monitor and forecast Chinese air quality. In this context, researchers at the Uni...season but because there is an eastward outflow of air that was previously revolving around Asia. This is the same type of phenomenon that carries dust fro...

War on terror meets war on cancer

...s in liquid nitrogen, using a vacuum to remove the air from each tube, then putting the tubes in boiling ...ormant. But for live bioweapons spread through the air in an aerosol mist ?bacteria that cause plague, tularemia or Q fever, for example ?the difference in...

Pillows - a hot bed of fungal spores

...spergillus is a very common fungus, carried in the air as well as being found in cellars, household plant pots, compost, computers and ground pepper and spices. Invasive Aspergillosis occurs mainly in the lungs and sinuses, although it can spread to other organs such as the brain, and is becoming increa...

NJIT study shows nanoparticles could damage plant life

...," he said. Nanoparticles can be deposited into air by exhaust systems, chimneys or smoke stacks, said...the real world, said Watts. "But we speculate that air deposits of nanoparticles or water transport of them are ways in which nanoparticles could mix with ...

University of Delaware researchers develop cancer 'nanobomb'

...s in wide variety of conditions." Explosions in air of loosely packed nanotubes have been seen before in an oxygen environment, creating ignition. However, the work reported by Panchapakesan uses the localized thermal energy imbalance to set off explosions that are intrinsic in nature. Panchapakesa...

Pulp mill devastates swans' sanctuary in Chile

...waste were simply being dumped together in an open air site, where the wind can disperse them," Tecklin said. The mission team, which prepared a report containing 25 key findings and recommendations, is now urgently calling upon the Chilean government and CELCO to take immediate remedial measures to pro...

Why Christmas trees are not extinct

...ry water up trees from the roots, but also prevent air from entering the conduits and killing trees. The Structure of Water Valves in Trees Sperry says the range of conduit diameters vary but overlap for conifers and flowering trees. The conduits or tracheids in conifers range from 10 to 50 microns (...

Researchers show how air pollution can cause heart disease

...compelling evidence yet that long-term exposure to air pollution--even at levels within federal standards...causes heart disease. Previous studies have linked air pollution to cardiovascular disease but until now it was poorly understood how pollution damaged the...

Brainstem blocks pain to protect key behaviors

... way. Given just before feeding, a strong puff of air ?perhaps indicating a nearby predator -- activated ON cells, and restored pain sensation. Such "predation-related stimuli," the authors speculate, "activate ON cells and thereby evoke a state of vigilant eating without concurrent sensory suppression...

Bats use touch receptors on wings to fly, catch prey, study finds

... the Merkel cells, he found they were sensitive to air flowing across the wing. These cells were most act...ing isn't properly angled or curved during flight, air passing next to the wing can become turbulent. Merkel cells help bats stay aerodynamically sound by ...

Group proves it's possible to grow new lung alveoli by growing new blood vessels

...t, growing new blood vessels and alveoli--the tiny air sacs where gas exchange occurs between the lungs and blood vessels--in tiny rat lungs. The results of their work were recently published in Circulation, entitled Vascular Endothelial Growth Factor Gene Therapy Increases Survival, Promotes Lung Angio...

UCR environmental scientists propose chemical solution to cleaning California's Salton Sea

...lake sediments that could generate dust and worsen air quality. Fish and fish-eating birds would disappear in 10-30 years, and be replaced perhaps by birds that eat brine shrimp. And the sea would continue to smell, which might even get worse. Doing something to address the Salton Sea's problems on the o...

NASA's AURA satellite peers into Earth's ozone hole

...e is destroyed each year is the temperature of the air high in the atmosphere. As with temperatures on the ground, some years are colder than others. When it's colder in the stratosphere, more ozone is destroyed. The 2005 ozone hole was approximately 386,000 square miles larger than it would have been in...

Tropical Atlantic cooling and African deforestation correlate to drought, report scientists

... causing less moisture to be pulled from the ocean air toward the land. Weldeab and his colleagues studied cores from beneath the ocean floor of the Gulf of Guinea, in the tropical Atlantic just off the coast of Cameroon, to understand the history of climate in the area for the past 10,000 years. The co...

MRSA use amoeba to spread, new research shows

...ogens and could potentially be dispersed widely by air currents, especially when they are dry. "Replication of MRSA in amoeba and other protozoa raises several important concerns for hospital hygiene." In laboratory tests, the researchers found that within 24 hours of its introduction, MRSA had infecte...

Sequencing our seas

...," he said. Earth's microbes help clean water and air and regenerate nutrients used by all life. Planktonic microbes, microscopic organisms that float freely in the oceans, help maintain environmental balance and drive the planet's biogeochemical cycles of carbon, nitrogen, oxygen and sulfur. "Plants a...

Wyoming cloud seeding experiment begins this month

...," he said. Earth's microbes help clean water and air and regenerate nutrients used by all life. Planktonic microbes, microscopic organisms that float freely in the oceans, help maintain environmental balance and drive the planet's biogeochemical cycles of carbon, nitrogen, oxygen and sulfur. "Plants a...

Vaccine provides 100 percent protection against avian flu virus in animal study

...," he said. Earth's microbes help clean water and air and regenerate nutrients used by all life. Planktonic microbes, microscopic organisms that float freely in the oceans, help maintain environmental balance and drive the planet's biogeochemical cycles of carbon, nitrogen, oxygen and sulfur. "Plants a...

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