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Tag: "highest" at biology news

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

...ing BPH was 24 percent lower in the group with the highest dioxin levels compared to the group with the lowes... fat and dairy products. Babies are exposed to the highest levels of dioxins through breast milk. Dioxins are eliminated extremely slowly from the body and the...

New dwarf buffalo discovered by chance in the Philippines

...n of unique mammal species there is among the very highest in the world, but so is the number of threatened species." B. cebuensis also can help scientists to better understand "island dwarfing," whereby some large mammals confined to an island shrink in response to evolutionary factors. This may occur due...

Pilot study successful in taming allergic reactions to food

... minutes for eight hours in order to determine the highest dose that each subject could tolerate,?Burks said. The subjects consumed the first doses in the study clinic. The researchers then gave the children’s parents or caregivers a supply of egg product, allocated into the tolerated doses, which the sub...

Wolves are suffering less from inbreeding than expected

...of inbreeding it appears to be the wolves with the highest amount of genetic variation that establish themselves as breeders, Staffan Bensch concludes. Whether this is because the genetically diverse wolves are more healthy and stronger and thus more likely to become reproductively active, or if they are mor...

Like a snail through the intestinal canal

...adhesives in the form of films provided by far the highest degree of friction. Despite this, there is nevertheless no possibility of movement. A snail uses the exertions of pressure to change the characteristics of the middle layer, and thus lower the degree of friction, in order to move. In the intestine...

Recurrence of a flu pandemic similar to infamous 1918 flu could kill 62 million

..., and in central India, 7.8 percent, which was the highest rate of the countries and regions analyzed. According to this data then, from Denmark to central India, death rates from the 1918-1920 flu pandemic varied more than 39-fold. The researchers then took the relationship observed in 1918 between per ...

Save the whales? Sure, but how many?

...f demographics, not ecology, Sanderson says. The highest standard for animal populations is achieving 'historical baselines' where species are restored to when humanity as a whole had significantly less impact on the world as it does today. Dr. Sanderson writes that achieving this goal can be difficult du...

Increase in carbon dioxide emissions accelerating

...h's figures show that while China demonstrates the highest current growth rate in emissions, its emissions per person are still below the global average and its accumulated contribution since the start of the industrial revolution around 1800 is only five per cent of the global total. This compares to the US...

Study of gene transfer for erectile dysfunction shows promise

...rapy. However, the results also showed that at the highest doses, men reported highly significant improvement... with the treatment. Participants who received the highest two doses had apparent sustained improvements in ED as measured by the questionnaire. The researcher...

Obesity levels in US are grossly underestimated

...vidual states, found that Southern states have the highest levels of obesity in the country. Using the authors' corrected data for 2000, the highest obesity levels for men were found in Texas (31%) and Mississippi (30%). For women, Texas (37%), Loui...

Race to halt global amphibian crisis boosted by rediscovery of endangered Colombian frogs

...ct them." The Sierra Nevada de Santa Marta is the highest coastal mountain range in the world, rising from the shores of the Caribbean Sea to almost 19,000 feet. It contains extraordinary numbers of species found nowhere else across a multitude of isolated ecosystems. Protecting the new El Dorado Nature Res...

US infant mortality rate fails to improve

...Babies born to Black mothers continued to have the highest rate of infant deaths at 13.5 per 1,000 live births, while Asians had the lowest rate at 4.8. The rate for American Indians was 8.7 and for Whites it was 5.7. Infants born to Hispanic mothers, who can be of any race, had an infant mortality rate of 5...

A new view on Lyme disease: Rodents hold the key to annual risk

...d to rise with precipitation, the models found the highest tick numbers at intermediate precipitation levels. These inconsistencies can be explored by incorporating other variables with documented effects into the approach outlined here. Also surprising, the researchers found that even a 3-fold variation in ...

The higher the hierarchy, the greater the aggression

...ive society, then the rates of aggression would be highest toward the front of the queue and that the aggression would increase as the time available to inherit the ability to breed ran out in seasonal animals. These predictions were tested on field colonies of the paper wasp Polistes dominulus by recording ...

Record air pollution above the Arctic

...stitute for Polar and Marine Research observed the highest air pollution on record since measurements began i...ograms ozone per cubic metre, these values are the highest measured since the foundation of the research base in 1989. A specific weather condition has caused...

Innovative method for creating a human cytomegalovirus vaccine outlined

... development of a CMV vaccine should be one of the highest priorities for vaccine makers. Now, in a new study in the August 1 issue of The Journal of Virology, researchers at The Wistar Institute outline an innovative approach that could be used to create such a vaccine. The Wistar scientists began with t...

Links between DNA damage and breast cancer studied

...elium, myoepithelium and stroma and found that the highest concentrations of this lesion tended to occur in women in the 33- to 46-years age group, a bracket that corresponds to a known rise in the incidence of breast cancer. In a second paper, the team studied age-related concentrations of two similar mutag...

Agriculture and tropical conservation: rethinking old ideas

... industrialized areas. "The area has some of the highest biodiversity in the world, but it all occurs in fragments of forest," Vandermeer said. In one study the researchers examined, a Brazilian scientist documented in a single river valley 28,000 separate forest fragments, where vulnerable species such as...

New stem-cell findings can help the body to cure itself

... intestine, one of the organs in the body with the highest rates of cell renewal. "We also know that blood, brain and skin stem cells express the genes that we now know to be important in the intestine," he says. "This suggests that the cell production mechanism can be the same for these stem cells too." T...

Blood test predicts success of quitting smoking using the nicotine patch

...perience the least amount of cravings and have the highest probability of success in quitting cigarettes, according to the results of a study in the June issus of the Journal of Clinical Pharmacology and Therapeutics. The blood test, which is a measure of the rate at which nicotine is metabolized, may eve...

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