Tag: "comparison" at biology news

Potential for enhanced sequestration of carbon in soils supports evaluations

...ld be evaluated to see how competitive they are in comparison with a variety of other options," such as flue-gas capture to reduce emissions or remove carbon dioxide already in the atmosphere. Post and his colleagues considered the range of possible costs and benefits that could accrue from adopting land-manage...

Chemical derived from vitamin-E shows early promise as cancer drug

...eated mice developed visible lung tumor lesions in comparison to five of 10 untreated control mice. None of the treated animals showed any type of general symptoms of toxicity to alpha-TEA, which Kline chose for further study in 1997 from 50 candidates. Because cancer may result from just one normal cell...

Tracing genes, biologists show lizard migration is traced to Florida

...d Glor, he then analyzed the introduced samples in comparison to the Cuban ones, not only in Florida but also in Hawaii, Taiwan, Jamaica, Grenada and Grand Cayman. The researchers were able to identify Florida as the source of new populations in the other countries by finding genetic variation shared b...

Bronfenbrenner book sums up human development

... role of peers in influencing child development, a comparison of child development in the United States with that in the former Soviet Union, as well as the challenges of child development in disadvantaged socioeconomic settings. "Bronfenbrenner has himself been the foremost theoretician of human development o...

Folic acid vitamin use by women reaches all-time high, March of Dimes survey finds

...portance of folic acid to the health of babies. A comparison of the eight previous surveys shows that 12 percent of women know that, to be effective, folic acid must be consumed before pregnancy -- up from only 2 percent in 1995. Those who know that folic acid helps prevent birth defects increased to 24 perce...

Missing genes may help explain why plague bacteria are so deadly

... Sanger Institute in Cambridge, England. While the comparison revealed a number of genes in the plague bacterium that are not present in its relative, Garcia said the more important finding was the extent and apparent cause of gene inactivation in Y. pestis. "As many as 13 percent of Y. pseudotuberculosis genes...

Ventilation in bars, casinos doesn't control health risk for hospitality workers

...and city streets, according to the first published comparison of indoor air quality before and after smoke-free workplace legislation. The study, conducted in a casino, six bars and a pool hall in Wilmington, Delaware, is published in the September 2004 Journal of Occupational & Environmental Medicine. "This r...

Heart gene yields insights into evolution, disease risk

...he chimpanzee, gorilla, orangutan and baboon. This comparison revealed that that the region of the gene is rapidly evolving and had been a "hotspot" of mutation for tens of millions of years. The researchers next compared the variation in the regulatory region of the MMP3 gene among seven populations from aroun...

Chernobyl study: Risk of thyroid cancer rises with radiation dose

...y control subjects from the general population for comparison purposes. The controls and cancer cases were matched by age and place of residence at the time of the accident. The researchers then set about collecting information from these individuals and their mothers or fathers that would allow them to estimat...

Scientists fear new Ebola outbreak may explain sudden gorilla disappearance

.... Many bear a distinctive ginger-colored crown. In comparison to mountain gorillas, western lowland gorillas have wider and larger skulls. They are characterized as quiet, and peaceful animals that almost never attack unless provoked. The relatively intact forests of Western Equatorial Africa are regarded as t...

JGI announces community sequencing program portfolio

...orms--is enormous, the reality is that it pales in comparison to the diversity between the microbes that make up the bulk of the biomass on the planet. Accordingly, to close conspicuous gaps in our understanding of the tree of life, the U.S. Department of Energy (DOE) Joint Genome Institute (JGI) announces a h...

Carnegie Mellon scientists reveal ways of studying, resolving PCB contamination in US rivers

...se PCBs differently in the first ever side-by-side comparison of sediments taken from separate, contaminated rivers. Future studies that modify sediment nutrients from contaminated sites with little or no bacterial activity also could reveal ways to coax poor PCB-eaters into developing healthy appetites for the...

PCB breakdown in rivers depends on sediment-specific bacteria, find Carnegie Mellon U. scientists

...cterial populations in the first-ever side-by-side comparison of PCB-laden sediments taken from separate, contam...gators believe that this is the first side-by-side comparison of populations using the same experimental approaches under identical conditions. Despite 30 year...

Using statistics to decipher secrets of natural mutation

...d compared what was left. According to Green, the comparison of context-dependent mutation in the segments across the species revealed that the CpG mutations, unlike other mutation types, accumulated in a regular clock-like fashion. The analysis also distinguished other sources of naturally occurring mutations...

Medication reconciliation, pharmacist involvement vital to reducing medication errors, study finds

...in the medication regimen noted during this manual comparison process. The study found that pharmacists are in the best position to perform medication reconciliation. "We believe that pharmacists are especially suited to obtain medication histories and perform reconciliation based on their education, experien...

Travelers' diarrhea not improved by restricted diet

... not necessarily have to avoid tasty cuisine. In a comparison of two groups of patients receiving antibiotics to treat travelers' diarrhea, those who restricted their diet to broth and bland foods did not recover any faster than those who ate anything they wanted, according to an article in the August 1 issue o...

Climate change could doom Alaska's tundra

... melting ice." But any changes so far pale in comparison of what's to come, and fairly soon, Bachelet said. Among the predictions: Boreal mixed forests could yield to a maritime and temperate conifer forest much like those of southeast Alaska, and cover huge areas of Alaska. The only large area o...

AGU journal highlights - 29 July 2004

..., 2004 8. Spring increase in Arctic cloudiness A comparison of ground and satellite cloud data over the Arctic seas indicates astrong increase in cloudiness during spring over the past two decades. Axel J.Schweiger reports that the two data sets show a nearly five percent increase perdecade in cloudiness asso...

Altered expression of key developmental genes underlies evolution of butterfly wing patterns

...erns in multiple species. By making a phylogenetic comparison of the species' characteristics, the authors were able to form new ideas about how these patterns evolved. It is thought that morphological evolution frequently occurs through the relative acceleration or delay of development between different parts ...

Severe depression associated with greater number of nerve cells in thalamus region of brain

...olar disorder and with schizophrenia, as well as a comparison group with no history of mental illness. Major depression is characterized by a depressed mood and lack of interest or pleasure in normal activities for a prolonged period of time, while bipolar disease is distinguished by alternating periods of extr...

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