air 2 5

Tag: "air" at biology news

Liquid ventilation

...f the baby's weight. Perfluorocarbons instead of air Perfluorocarbon is used in liquid respiration, as it has a suitable surface tension in order to maintain the pulmonary structure and the fluorine has good properties for the transport of and interchange between blood and the gases, O2 and CO2. The ...

UC Berkeley researchers create a biologically-inspired artificial compound eye

... opening of a vacuum chamber and applying negative air pressure, they pulled it into the dome shapes they needed, controlling its form by using different pressures. They then had a hemisphere-shaped cup pocked with some 8,700 indentations: a compound-eye mold that could be used over and over again using...

Flu not the only germ threat this time of year

.... Some of the viruses are also wafting through the air you breathe, looking to land in your eyes or nose and set up house inside your body. And those are just the respiratory germs ?never mind Strep in the throat and ears, or Norwalk viral agents that attack the GI system, and so on. While the world's a...

Neuroscientists discover new cell type that may help brain maintain memories of smells

...ption of a smell begins when odor molecules in the air interact with one of the millions of specialized olfactory sensory neurons in the nose. These sensory neurons then send signals to a brain region called the olfactory bulb, where the work of recognizing the odor begins. One of the puzzling aspects...

Researchers reveal lung's unique innate immune system

...ed particles or microorganisms. The alveola ?tiny air sacs in the lung where exchanges of gases between the respiratory and circulatory systems takes place ?are protected from invading microbes by the alveolar macrophage. Macrophages are white blood cells involved in the inflammatory response througho...

Carbon cycle was already disrupted millions of years ago

... periods. Plants and algae assimilate CO2 from the air and water. Consequently changes in the isotope ratio are recorded in organic material. These chemical fossils have been well preserved because large parts of the oceans in the Jurassic and Cretaceous periods contained little (if any) oxygen. In sed...

USC, Rice to develop bacteria-powered fuel cells

... Air Force has long been interested in micro-scale air vehicles ?some as small as insects ?but it has been stymied by the lack of a suitable, compact power source. With $4.4 million from the Department of Defense's Multidisciplinary University Research Initiative, or MURI, the USC and Rice research team ...

UF researchers develop ways to keep the bloom on the rose

...When the floral industry began shipping flowers by air to retailers, the quality and longevity declined for the consumer. "With Terril's research, people today are receiving flowers of a better quality that last longer than when roses were grown and sold in the same location," Kremp said. The beauty an...

Wound monitor 'sniffs out' infections

...t's wounds simply by detecting bad bacteria in the air emitted from the wound. Using state of the sensors we will be able to detect and diagnose the presence of an infection almost instantaneously." The device will use new hybrid sensor technology with a mobile laboratory-based multi-technology gas sens...

Georgia Tech accelerates drug discovery with new IBM supercomputing cluster

...that can use the existing chilled water supply for air conditioning systems already located in the majori..., reducing noise and easing the burden on existing air conditioning units. The Rear Door Heat eXchanger can reduce first-time installation costs by as much...

Climate change drives widespread amphibian extinctions

...ecies survival." Using records of sea-surface and air temperatures, Pounds and colleagues show that harlequin frogs are disappearing in near lockstep with changing climate. According to the scientists, the Earth's rising temperatures enhance cloud cover on tropical mountains, leading to cooler days and ...

Outsmarting the smartie bug

...ly. S. pneumoniae usually lives harmlessly in the air passages and in the first year of life most people are likely to have 'carried' at least one strain. It is passed from person to person by sneezing and other aerosols. However, it occasionally passes from the airways to invade other tissues. This can...

UF scientists trace origin of shark's electric sense

...er is so conductive. But it doesn't work on land - air doesn't conduct electricity as well. When it happens, it's called a lightning bolt and you don't need special receptors to sense it." All primitive animals with backbones could sense electricity, according to Michael Coates, an associate professor o...

A Jekyll and Hyde of cytokines: IL-25 both promotes and limits inflammatory diseases

...ed in the environment, whether they are industrial air pollutants or molecules of peanut oil. "It is possible that for most of human history, cytokines like IL-25 have promoted type 2 T helper cells that fight infection with intestinal parasites like Trichuris, " said Colby Zaph, a co-author and Irvingt...

New organic substrate

... earth is needed. Normal soil encloses some 50% of air in its interior, while this substrate encloses 90% of air and 10% of solid material. This is why these substrates accelerate the growth processes of the plant...

Single cell amoeba increases MRSA numbers 1000- fold

...n MRSA. Amoebae, as cysts, are often dispersed by air currents, providing another means of spreading any trapped bacteria. "We need more research into the role of amoeba in the spread of MRSA ?hospitals should aim to eradicate amoebae as well as the bacteria themselves" said Prof Brown of the Departmen...

New MRI technique shows emphysema in asymptomatic smokers

...essive lung disease, which permanently damages the air sacs in the lungs. As the size of the air sacs (or "airspaces") increase, cavities form in the lung tissue, hindering oxygen delivery. Accordi...

Widespread elephant slaughter discovered in Chad

...before our eyes," Fay said. "We hadn't been in the air more than two hours when we saw our first carcass. It was fresh, maybe just a few weeks old, not far from the park headquarters, and the animal's face had been chopped off, the tusks removed. "Two days later we were flying west of that area when we...

Mosquito spray increases toxicity of pyrethroids in creek, study finds

...s took the rare step of applying an insecticide by air in August 2005. UC Berkeley researchers point out ...esticide. In this case, the decision to spray by air came after two dozen people in Sacramento County had become infected that summer by the West Nile vi...

Chemical in many air fresheners may reduce lung function

...earch shows that a chemical compound found in many air fresheners, toilet bowl cleaners, mothballs and other deodorizing products, may be harmful to the lungs. Human population studies at the National Institute of Environmental Health Sciences (NIEHS), a part of the National Institutes of Health, found t...

1 2 3 4 5 6 7 8 9 10