environmental 2 8

Tag: "environmental" at biology news

Nano-devices hold promise for early-stage cancer detection

...ototypes for imaging and sensing in healthcare and environmental applications. "The imaging and sensing technologies being pursued would be non-invasive, removing the discomfort, expense, and risk associated with many screening procedures, such as a colonoscopy," said Qiyin Fang, assistant professor of engineer...

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

...son group," said Dr. Arnold Schecter, professor of environmental sciences at the UT School of Public Health Regiona...udy points out the necessity to conduct additional environmental studies of the impact of dioxins and other toxins on the male reproductive system. Previous research...

Soil nutrition affects carbon sequestration in forests

...t systems and how this partitioning is affected by environmental conditions."...

Microbe fixes nitrogen at a blistering 92 C

...re single-celled organisms that live under extreme environmental conditions, such as the high temperatures and crushing pressures below the seafloor. If heat-loving archaea were the first life on the planet, they would have needed a usable source of nitrogen, Baross says. Known as FS406-22 because of the fluid ...

New moth variety disarms plants guarded by selenium

...rs or of selenium-enriched agricultural crops--for environmental cleanup or as a source of anti-carcinogenic selenocompounds--may have ecological implications, as is clear from the apparent rapid evolution of selenium-tolerant insects shown in this study. ...

Researchers examine why food tastes bad to chemotherapy recipients

...rea Dietrich, Virginia Tech professor of civil and environmental engineering (CEE). Dietrich believes there are two components to the metallic flavor –?the taste of metal ions on the tongue and the production of metal-catalyzed odors in the mouth that create a retro-nasal effect. "I am attempting to gain a bett...

Changing length of days reverses how estrogen affects aggressiveness in mice

...," Nelson said. "But here we have a very simple environmental factor, the hours of light in day, that causes a d... the body, at least in some species, how are other environmental factors such as diet affecting estrogen in humans? It is something we don't know enough about." ...

China's environmental challenges

...ate of economic growth. At the same time, China's environmental problems of energy and water shortages, water and ...nment devotes itself entirely to exploring China's environmental challenges and potential solutions, with all of the articles written by Chinese scientists. As t...

Plague proteome reveals proteins linked to infection

... it to rodent and human hosts. This study mimicked environmental conditions of Y. pestis in flea and in mammalian systems. The proteome is a survey of proteins in a cell. Lipton, Hixson and colleagues at the PNNL-based Environmental Molecular Sciences Laboratory and Lawrence Livermore National Laboratory used p...

Very low birth weight linked to reduced quality of life in pre-school children

...ionals need to consider a number of biological and environmental factors as part of their assessment. These include current health problems, age at delivery, length of stay in the neonatal intensive care unit and the educational level of the primary caregiver." Children ranging from 36 to 53 months were in...

Fruit fly aggression studies have relevance to humans, animals

...cent. The other 90 percent had to be attributed to environmental variation. "This is definitely not genetic predeterminism," Mackay said. "It's a susceptibility. Even in flies, in the constant environment in which we grow them, the environment is more important than the genes. But we are very interested in that s...

High levels of blindness in southern Sudan following years of war

...AFE? surgery, antibiotics, facial cleanliness, and environmental change. The authors call for its urgent implementation in southern Sudan. The surveys are also discussed in two ‘Perspective?articles in the same issue of PLoS Medicine. One article discusses the possibility that the methods used in these (and oth...

New technology used to construct the first map of structural variation in the human genome

...ons, including differential responses to drugs and environmental stimuli. Mechanisms underlying the formation of CNVs also provide insight into evolutionary processes and human origins. Using microarray technology, scientists can scan for CNVs across the genome in a single experiment. While this is a cost-eff...

Spike in testicular cancer is focus

...The researchers will determine whether exposure to environmental factors such as environmental hormone disruptors increases the risk of testicular cancer. They will measure the levels of these en...

Commercial fishing causes dangerous fluctuations in fish populations

...bers, there is always the danger that some kind of environmental factor will devastate the recruits in one season. This would leave the population close to collapse, with very few young fish coming into the group to replace those being caught." Professor Beddington adds that the increased variability has seriou...

Age-related changes in DNA repair illuminate the connection between age and genetic damage

...occurs normally as a result of cell metabolism and environmental influences--and the various ways in which cells repair that damage. In the new work, researchers found that cells in young fruit flies make use of a different mix of molecular DNA-repair mechanisms compared to cells in older flies. The findings are r...

Plutonium or greenhouse gases? Weighing the energy options

...ng not only the technologies involved but also the environmental impacts. Similar comparisons have been made betwee...explosion of a nuclear weapon to be a pretty large environmental impact with global implications," Ewing said. "A typical nuclear weapon will kill many, many hundred...

A simple feedback resistor switch keeps latent HIV from awakening

...s simple resistor system was better able to resist environmental fluctuations than hypothetical oligomer-dependent ...e either to random increases of Tat activity or to environmental inhibitors of the SirT1 enzyme, such as dihydrocoumarin, a natural flavoring agent found in clover. ...

'Mindless autopilot' drives people to underestimate food decisions

...nt where a person can be unknowingly influenced by environmental cues." When Wansink and Jeffery Sobal, Cornell professor or nutritional sciences, asked 139 university staff and students to estimate how many decisions they make about food each day, the average response was 15. However, when the volunteers then a...

Better sludge through metagenomics

...d translate into huge savings and spell relief for environmental engineers. David Jenkins is Professor Emeritus o...at Accumulibacter has been following in humanity's environmental footprints. "The genomes of the bacteria from the two sites were surprisingly similar--practically ...

1 2 3 4 5 6 7 8 9 10