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Tag: "equivalent" at biology news

Cutting calories slightly can reduce aging damage

...and overall health. An 8 percent reduction is the equivalent of a few hundred calories in an average human diet and moderate exercise is equivalent to taking a short walk. To reveal the workings of the body's chemical climate when aging-related da...

Fire ants: Their true story told by the scientist who loves them

...y-lengths. On a human scale, that's the staggering equivalent of 20 miles or more. On the FSU faculty since 1970, Tschinkel's wide-ranging research has also encompassed the ecology of arboreal ants (a main food of the endangered red-cockaded woodpecker) and the natural history of the Florida harvester ant ?or ...

Evolution reveals an independent route for diversity in animal form

...he higher animal lineage. The researchers found no equivalent of a Hox cluster in two representative cnidarians, and the patterns of expression of the cnidarian Hox-like genes differ radically across the phylum and are inconsistent with the expression patterns exhibited by typical Hox-system genes. The authors ...

Researchers discover how bacteria sense their environments

...ecular concentrations as small as 0.1 percent, the equivalent of one drop diluted in a pool of a 1,000 drops. How do they do it? New Cornell research, highlighted on the cover of the May issue of Nature Structural and Molecular Biology, reveals that receptors assemble into a kind of cooperative lattice on a b...

Results with newer bladeless LASIK equivalent to standard microkeratome LASIK

...hthalmologist and study investigator. Given the equivalent findings thus far in eye health and vision between the two types of LASIK, Dr. Patel slightly prefers bladeless LASIK due to its potential safety, which was not measured in his study. "I'd say the short-term outcomes are equal and the risks are, in t...

UWM brain research supports drug development from jellyfish protein

...t UW-Milwaukee, subjected brain cells to the "lab" equivalent of a stroke, and more than half treated with aequorin survived without residual toxicity. Why does it work? Diseases like Alzheimer's are associated with a loss of "calcium-binding" proteins that protect nerve cells, said Moyer. Calcium is necessa...

Microcapsules like it hot and salty

...lso soften when heated. However, there are so many equivalent charges in the capsule wall that they repel each other. The whole structure expands considerably, the diameter increases and the wall becomes thinner. The result is significantly higher permeability compared to the original capsules at room temperatu...

Malaria vaccine prompts victims' immune system to eliminate parasite from mosquitoes

...etocytes—the sexual forms of the parasite that are equivalent to sperm and eggs. Fertilization takes place in the mosquito gut, after which the parasite imbeds itself in the gut lining. There, it passes through discrete stages, before migrating to the insect's salivary glands, where it is passed on to the nex...

Pilot study successful in taming allergic reactions to food

...h a very small concentration of egg product -- the equivalent of less than one-thousandth of an egg -- and then ...reased the subjects?dosages until they reached the equivalent of one-tenth of an egg, Burks said. The children then continued to take this “maintenance dose?daily...

Highly concentrated botulinum preparation for cosmetic injections can result in severe illness

...erum toxin levels in 3 of the 4 case-patients were equivalent to 21 to 43 times the estimated human lethal dose; pretreatment serum from the fourth epidemiologically linked case-patient was not available. A 100-µg vial of toxin taken from the same manufacturer's lot as toxin administered to the case-patients co...

Cigarette smoking impedes tendon-to-bone healing

...aintained nicotine levels in the bloodstream about equivalent to smoking a pack to a pack and a half of cigarettes per day. "So these would have been heavy smokers," Galatz says. "But another significant aspect about this study is that we did not account for other detrimental chemicals in cigarettes. Rats we...

Therapeutic role found for carbon monoxide

...t, daily regimen of CO (in a modest concentration, equivalent to what a cigarette smoker might inhale) of one hour per day. As predicted, their results showed that the gas did indeed reverse PAH in the animals, resulting in the restoration of both normal pressures and heart weights (indicative of reversal of im...

Stem cell activity deciphered in the aging brain

... rats slows down dramatically by middle age -- the equivalent of 50 years in humans. But scientists did not know what causes this decline. The common assumption had been that the brain drain was due to a decreasing supply of neural stem cells in the aging hippocampus, said lead study investigator Bharathi H...

Psst! Coffee drinkers: Fruit flies have something to tell you about caffeine

...ain the Gr66a caffeine taste receptor in the fly's equivalent of the taste buds - dubbed the taste bristles. Applying sugar to the taste bristles of normal flies, or to mutant flies missing the Gr66a protein, causes the neurons to produce electrical current "spikes" at a frequency of about 20 spikes per secon...

Biofuel cells without the bio cells

...t National Laboratory. The feat is the bacterial equivalent of removing lungs and coaxing the disembodied tissue to breathe. Squier and principal authors Yijia Xiong and Liang Shi, PNNL staff scientists, discovered that the proteins, outer membrane c-type cytochrome A, or OmcA, formed a dense coating on the...

Exposure to dioxins influences male reproductive system, study of Vietnam veterans concludes

...program and thus were exposed to dioxins at levels equivalent to the general population. The veterans were interviewed and underwent physical examinations and lab tests during six examination cycles. The first cycle was conducted in 1982, so the veterans were followed for more than 20 years. "We found th...

Developing uses for sugar-cane bagasse: Biotechnology applied to the paper industry

... at a rate of 7 g of ethanol per m3 (concentration equivalent to 3° of alcohol in the liquid phase), laccase production increased, to a maximum level (90 U per g of dry bagasse support). This amounts to 45 times the yield obtained without ethanol. Moreover, it appeared that little or no ethanol introduced was c...

From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea

...ams polluted by mining waste where the pH level is equivalent to battery acid. Archaea even inhabit the warm, dark environs of our intestines and mouth. While extremophiles have been the subject of intense research, scientists are just now beginning to focus on the large number of archaeal species that inhab...

Transplanted brain cells hold promise for Parkinson's disease

...vement control, Dr. Borlongan notes. This would be equivalent to a patient getting treatment very early in the disease process, which rarely happens since there is no screening test to catch it early. "Right now we are saying if you are able to identify Parkinson’s in the early stage, we think this therapy ...

Sequencing of the oyster mushroom genome

...ion "letters" or bases, distributed throughout two equivalent copies, given that this fungus has a double copy o...o gives us an example: 70 million letters would be equivalent to a volume of more than 11,500 pages of text. If the pages are normal, folio size and are placed si...

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