Tag: "repellant" at biology news

UT Southwestern researcher finds genetic cause for Gulf War syndrome

...ontaining flea collars, highly concentrated insect repellant andpyridostigmime bromide anti-nerve gas tablets, as well as exposure to low-levelchemical nerve agents. The current study examined the same group of men, members of the 24th NavalMobile Construction Battalion, used in the 1997 studies. Because these...

Assaulting the mosquitos sense of smell

..., there is still considerable interest in mosquito repellant sprays, and recent outbreaks of West Nile fever indicate that the threat of mosquito-borne diseases cannot be ignored. In addition, the highly conserved nature of the olfactory system means that similar approaches are likely to work in other insects...

Virginia Tech researchers join NSF Arabidopsis 2010 Project; may help produce plants that defend themselves without pesticides

...ey have a nice flavor to us, but they are toxic or repellant to insects feeding on them." Some enzymes produce cyanide when plants are attacked, he said. As we understand these genes and what their product enzymes do," Esen said, "through genetic engineering, we can produce plants that defend themselves witho...

Medicines, caffeine and antibacterial soap among contaminants found in American streams

...most frequently detected compounds were the insect repellant DEET, triclosan, the active ingredient in antimicrobial soaps and detergents, a flame retardant (tri(2-chloroethyl) phosphate) and a detergent breakdown product with endocrine disruptive properties (4-nonylphenol). Of the 95 target compounds, the re...

How the body copes with fear

...docannabinoids and CB1 for adapting to aversive or repellant situations was then studied in a fear-conditioning task. In this task, both CB1 knock-out and control mice had first to associate a tone signal with an aversive stimulus. Mice were next repeatedly exposed to the tone on following days. The behavioral...

Mosquito genome sequence--Published in the journal Science

...ossible A. gambiae odorant receptors. A mosquito repellant that worked by blocking such receptors may prevent the spread of malaria, simply by making it harder for mosquitoes to find their prey, according to Holt. Two additional Research Articles, ten Viewpoints, four Reports, and an Editorial accompany the ...

Invading species have tough time cracking diverse neighborhood

...did more poorly. Using statistics to tease out the repellant effects of individual plant guilds, the researchers found that each guild was most effective at limiting the success of introduced plants from its own guild. That finding was statistically significant for all guilds except legumes, which tend to enri...

Mix of chemicals plus stress damages brain, liver in animals and likely in humans

...sed to 60 days of low-dose chemicals -- the insect repellant DEET, the insecticide permethrin, and the anti-nerve gas agent pyridostigmine bromide. These are the same drugs that the soldiers received during the 1990 - 1991 Persian Gulf War, and Abou Donia's rats were exposed to the same levels -- in weight adj...

Physicists reveal first 'nanoflowers'

...re currently being explored are their use as water repellant coatings and as a base for a new type of solar cell. We have already shown that as a coating water droplets roll off these surfaces when they are tilted at angles as small as 5 degrees. This behavior is a direct consequence of the ability of such nan...

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