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Tag: "population" at biology news

‘Blue Brain?project explores thought at molecular level

... global exporters of pig products. Denmark, with a population of only 5.4 million people, produces app. 25 million pigs per year. BGI is a leading genomics research institution in the promotion of genomics in agricultural research. In the past 5 years, in addition to its contribution to the international Human...

From a Few Wild Ancestors, a Citrus Cornucopia

...a, and nearby Southeast Asia—is experiencing rapid population growth and development,?says Krueger. He hopes to travel to southern China to assess firsthand the amount of citrus diversity still present there. Molecular techniques now available should make the task of recognizing novel citrus specimens much eas...

Study uncovers dirty little secret: Soil emissions are much-bigger-than-expected component of air pollution

...l fuel combustion are most closely linked to major population centers and show up in the satellite's ozone-monitoring measurements of nitrogen dioxide, part of the nitrogen oxides family. Other satellite instruments can detect large fires and the resulting emissions also can be measured by the ozone-monitoring ...

DNA from feathers tells tale of eagle fidelity

...ationships among individuals and determine various population parameters. "That we were able to use feathers we... to help them genetically "tag" individuals in the population without capture, said Jamie Rudnick, the paper's first author and a graduate student who conducted t...

Environmental lessons from tsunami as world's coastal population doubles

...stal disasters - inevitable as the world's coastal population is set to double by 2030 and global warming contin...ficial reefs. Globally 23 per cent of the world's population (1.2 billion people) live within 100 km of the coast and this figure is likely to increase to 50 per...

Infectious disease expert warns of spread of Rocky Mountain spotted fever

... to the state on feral dogs, an animal group whose population has markedly increased. And, as the number of dogs has increased, so have the number of ticks. A detailed study of this latest outbreak by the United States Centers for Disease Control and Prevention (CDC) is featured in the same edition of the NEJM ...

Enzyme affects hypertension by controlling salt levels in body

... too much salt ends up with hypertension, but some population groups, such as African-Americans, are more prone to develop salt-sensitive high blood pressure, suggesting that genetic factors may play a role in the disease. One extension of the current work may lead to a better understanding of hypertension tha...

New gene scanning technology marks a major advance in disease research

...pplied to search for rare genetic mutations in the population at large. Their method, called meltMADGE, which c...here may be unknown rare genetic variations in the population which may cause mild forms of a particular disease or feature in just one or two individuals, or may...

Exercise aside, genes may ultimately dictate seniors' mobility

...stics have shown that about 34 percent of the U.S. population aged 70 or older reports difficulty walking a quar...xercise performance they had. About a third of the population possesses the DD genotype of the gene, named for the angiotensin-converting enzyme, or ACE. The rest...

Genetic variation alters response to common anti-clotting drug

...initial dose." The team also learned that certain population groups tended to have a higher prevalence of a particular VKORC1 variation. While Asian Americans generally had the low-dose variation, African Americans had the high-dose version. European Americans fell in the middle. Although Rettie and Rieder sa...

Genetic link confirmed between Polynesians and indigenous Taiwanese

...erent mtDNA mutations between the mainland Chinese population and the aboriginal Taiwanese to support archeological findings suggesting a long period of habitation. These results indicate that Taiwanese aboriginal populations have been genetically isolated from mainland Chinese for 10,000 to 20,000 years, and t...

Experimental shingles vaccine proves effective in nationwide study

... longer, and the proportion of older people in our population increases, it is highly likely that the prevalence of shingles will increase. A preventive shingles vaccine would be an enormous boon for the health and quality of life of seniors," says Anthony S. Fauci, M.D., NIAID director. "We are extremely grati...

High-Throughput GoMiner

...erent mtDNA mutations between the mainland Chinese population and the aboriginal Taiwanese to support archeological findings suggesting a long period of habitation. These results indicate that Taiwanese aboriginal populations have been genetically isolated from mainland Chinese for 10,000 to 20,000 years, and t...

Survey Uncovers Surprising Attitudes Towards HIV Vaccine Research

...o have sex with men, and 18 percent of the general population believe that an HIV vaccine already exists but is ...ause HIV infection. Only 24 percent of the general population responded comparably. * Among men who have sex with men, 77 percent cited HIV/AIDS as the most u...

Eleven gene 'signature' reliably predicts cancer prognosis

... stem cells" maintains that a rare, stem cell-like population of cancer cells exists among the mix of other cells found in a tumor and that these tumor stem cells are responsible for tumor progression and metastasis. In a revolutionary study appearing in the June 1 print issue of The Journal of Clinical Investi...

Discarded placentas deliver researchers promising cells similar to embryonic stem cells

... do embryonic stem cells, they still can double in population size about 20 times over without needing another cell type serving as a feeder cell layer. This is significant, because to replicate, the currently available embryonic stem cell lines require a bed of mouse cells, traces of which can end up in each n...

Techniques available to detect soil that inhibits destructive soybean pest

...des. Whether a field is tilled can affect nematode population density, but it's not yet known whether this is re...re able to document reduced nematode reproduction, population density, and whether certain types of soil were suppressive to specific pathogens. "Currently, we a...

Updated data on novel HPV vaccine confirms efficacy in large population

...ne, 53 such cases were diagnosed. In the larger population analysis, which included women who may have become infected with HPV during the vaccination period or who may have violated the protocol (e.g. by missing visits, etc.), the vaccine prevented 99 percent of HPV 16 or 18-related high-grade cervical pre-...

Purdue researchers find key to rice blast fungus

... 23 percent of the total calories that the world's population consumes, according to the International Rice Research Institute. In addition to the countries that rely on rice for food, the pathogen also is found in the United States, especially in Arkansas, Louisiana and California, where rice blast recently e...

Human brain is still evolving

... we might be able to see variants within the human population that are rising in frequency due to positive selec...istical data on the frequency of haplotype D among population groups, the researchers applied their methods to a larger population sample of more than one thousan...

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