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Tag: "every" at biology news

Smoking damages key regulatory enzyme in the lung

...s each year in the United States, or nearly one of every five deaths, according to the Centers for Disease Control and Prevention. Smoking kills more Americans than AIDS, illegal drugs, alcohol, car accidents, suicides and murders combined and increases one's chances of developing lung, bladder, esophageal...

New factor implicated in allergy and asthma attacks

...s and airways, it may be necessary to deliver them every few hours via an inhaler. Boldogh and Sur suggested that it is now important to develop longer-lived antioxidant. "If we can find an antioxidant with a longer half-life, it could be really very effective in asthma and allergy treatment and also preve...

Plants reveal a secret and bring researchers nearer a cleaner future

...and registered the change using X-ray fluorescence every 10 microseconds to find out how different oxidation states developed. When carefully analysing the reaction kinetics, they observed a time delay before the O2-evolving step. This delay unambiguously proved the existence of the long-searched for inter...

Zinc supplements safe for HIV-infected children

...e the 10-mg zinc or placebo tablets to their child every day for six months. The children were seen at the hospital every two weeks for the first month, monthly for five months and, as a final visit, nine months after zinc...

Grabbing addiction by the tail

...ptide in rats that had been given amphetamine once every other day for 20 days. During this period, the animals displayed stereotypical behavior such as repeated sniffing, licking, and grooming, indicating a craving for the drug. Such behavior parallels the compulsive thought patterns that people addicted ...

New molecule may aid in production of biofuels and fungi-resistant plants

...e produced by insects, fungi, and marine organisms every year. Despite this abundant production, chitin does not accumulate in most ecosystems, indicating that the molecule is somehow degraded. Many aquatic and terrestrial microorganisms produce enzymes called chitinases which are responsible for breaking ...

Seeing the forest and the trees

...Tropical Research Institute that has been surveyed every five years since 1985. Previous studies have found that nearly half of the estimated 52 billion tons of carbon stored in the Earth's biomass is found in tropical forests. By simulating different extinction scenarios and analyzing the resulting mix of...

Biotech cotton 8: Bugs 0

...ehy said, "In an extreme infestation, you can have every single boll in the field infected." The caterpillars eat the seeds and damage the developing cotton fibers. In contrast, when the caterpillars eat Bt cotton, they die. Before the use of Bt cotton became widespread, pink bollworm was one of the top ...

Scientists must offer solutions for conserving tropical forests in a rapidly changing world

...meter or more at 1.3 m height in a 50-hectare plot every five years since 1985. Wright notes that the aboveground biomass on BCI was almost constant since the first census. But lianas increased substantially (from 9% to 13% of all leaf biomass) between 1986 and 2002. In another protected area, the Kibale ...

Seafloor creatures destroyed by ice action during ice ages

...sh can reach 100-years-old but reproduce only once every ten years. This means that full community recuperation takes up to hundreds of years.' Dr Claus-Dieter Hillenbrand explained: 'Until now it was commonly thought that the destructive action of the ice sheets was not significant enough to eradicate al...

Gene therapy may protect normal tissues during radiation retreatment for lung cancer

...sh can reach 100-years-old but reproduce only once every ten years. This means that full community recuperation takes up to hundreds of years.' Dr Claus-Dieter Hillenbrand explained: 'Until now it was commonly thought that the destructive action of the ice sheets was not significant enough to eradicate al...

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

...Car ownership within the country has been doubling every few years. "China's nitrogen dioxide concentrati...ir observations, SCIAMACHY covers the entire world every six days at the equator and more often at high latitudes. This versatile instrument represents a n...

Study uncovers placental microtransfusions lead to transmission of AIDS virus during childbirth

...emselves. That's a half million newborn worldwide every year facing chronic illness and premature death on their first day out of the safety of the womb. "The question has always been how does the virus get from the mothers to the babies?" said principal investigator Dr. Steven Meshnick, professor of epi...

Bacteria which sense the Earth's magnetic field

...eins) is a component of the membrane that encloses every indivudual magnetite crystal. This protein, called MamJ, exhibits an unusually high portion of amino acids, aligned in repeats. MamJ has a remote similarity to proteins which control crystallisation processes in other biominerals, like bones, teeth, ...

Dangerous tricksters: Some bacterie use immune cells to reproduce

...ans do not need to be afraid of this pathogen. 'In every spadeful of soil from an affected farm there are millions upon millions of rhodococci, yet it practically never happens that healthy humans are successfully infected by them.' ...

Underlying cause of massive pinyon pine die-off revealed

... the pinyon-juniper woodland zone at LANL. Roughly every two weeks, Breshears and his colleagues measured s... with those of the recent drought, 2000-2003. "By every measure we looked at, the recent drought was hotter," Breshears said, adding that, if anything, the ...

Scientists pinpoint inflammation gene

...ammation in so many human disorders. "Practically every common disease involves an inflammation component,...mation, which plays an important role in virtually every disease of major public health importance." ...

Genetic defenders protect crops from fungal disease

...and cost growers billions of dollars in pesticides every year. The study, published in the November 18 issue of the journal Science, describes powdery mildew infection in the mustard relative Arabidopsis thaliana. Each species of mildew is host-specific, meaning it can infect some plant species, but not o...

University of Arizona plant scientists to unravel maize genome

...ter program was used to build the physical maps of every large genome that has been sequenced to completion, including the human genome. BIO5 is a collaborative bioresearch institute bringing together scientists from 5 disciplines--agriculture, medicine, pharmacy, basic science and engineering--to solve c...

Membrane research opens window to benefits for plants, humans

...embrane proteins in full detail. "We could see how every single atom moves and how collective motions of a large number of atoms resulted in the opening of the channel," he said. Aquaporins -- discovered in 1991 by Peter Agre, now vice chancellor for science and technology at Duke University Medical Cente...

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