Unique two-part macroemulsion offers new approach to cleaning up contaminated aquifers
...sier. In laboratory studies using a test cell to simulate underground conditions, the researchers first flowed their macroemulsion through a layer of trichloroethene, then flushed it out with water, removing 93% of the solvent. Most of the surfactants and alcohol are removed from the soil; the small amount...New guidelines can help health officials better predict and control dengue epidemics
...mission and its likely impacts there, were able to simulate a distribution of economic impacts based on disease rates and economic variables, including the costs of treating patients and the opportunity costs represented by lost wages. "The advantage of using such a mathematical model in this analysis," note ...Cross-species mating may be evolutionarily important and lead to rapid change, say IUB researchers
...rough cross-breeding, the researchers were able to simulate the birth of three new species and the large and dramatic evolutionary changes that accompanied their origins. "It's often very easy to explain small differences we see within a species, but harder to account for larger differences between species th...Blimp ride & demo of high tech sensors
...media by request.) The 30-minute test flight will simulate searching and identifying a terrorist camp in the nearby woods. The LASH system is designed for passive and immediate detection of targets of interest invisible to the naked eye that can be submerged in the water at tactical depths or land areas. ...Immerge BioTherapeutics announces new findings addressing key safety risk in xenotransplantation
...ansplantation. "We utilized a laboratory model to simulate PERV (porcine endogenous retrovirus) transmission by infecting human cells with the virus," said Dr Clive Patience, Director of the Safety Program at Immerge. "We found that human retrovirus elements were not detectable in the PERV particles release...Leaf fall in ancient polar forests still a mystery
...ods of complete darkness. They are now looking to simulate even higher latitudes. Two carbon dioxide regimes were used, because it is generally accepted that atmospheric carbon dioxide was higher when these polar forests existed. The temperatures were kept warm, never dipping below freezing. While the res...Rapid movements of living biomolecules visualised
.... However, with these molecules it is difficult to simulate the behaviour in a living cell. Dynamic processes in the cell can only be understood with living cell microscopy. Molenaar used fluorescent probes which specifically bind to the molecule he wanted to study. By using a fluorescent microscope to exami...Plant diversity threatened by climate change and buildup of greenhouse gas, study reveals
...of infrared heat lamps, sprinklers and emitters to simulate four conditions that climate experts predict could exist a century from now as a result of continued fossil fuel consumption and deforestation: A temperature increase of 2 degrees F; A 50 percent rise in precipitation; Double the amount of CO2 ...Barrel structure in globular proteins may transport small molecules
...mputing Applications, the researchers were able to simulate this protein function. "We applied a force to ammonia to pull it through the channel of the hisF protein and then watched what happened," Luthey-Schulten said. "Our studies show that it is indeed possible -- even energetically favorable -- for ammon...Mouse model offers new explanation for kidney disease and failure
... In addition, when injected with toxic proteins to simulate kidney stress, two-thirds of these mice developed clinical signs of kidney disease compared to only 7 percent of normal mice. And while normal mice recovered within two weeks, mice lacking one copy of CD2AP had more severe and persistent symptoms tha...Cleaning up contaminated soil, groundwater
...own. They suggest that improved computer models to simulate these complex systems will be highly useful for developing better designs for cleaning contaminated soil and groundwater. Ongoing research into the effect of surfactants on the flow of contaminants within the vadose zone holds real promise to help re...Controlling cell adhesion: Researchers report first evidence of 'catch bonds'
...experiment involved flow chamber tests designed to simulate blood flow in the body. Oklahoma researchers perfused cells into the chamber while controlling flow rates and shear forces. This allowed them to study how adhesive bonds form and dissociate under the rolling interactions. "We found that one range o...Research and development takes robots and automation into new territory
...earchers have been designing space-age robots that simulate human movements and speech, closing the gap between man-machine communication. New analysis by Technical Insights, a business unit of Frost & Sullivan ( http://www.Technical-Insights.frost.com ), Robotics and Automation, noting that several primary a...Tufts University biologists unveil more mysteries of fireflies flash
...er-generated flashes and light- emitting diodes to simulate male firefly behavior and see which flash types the females responded to most by tracking the females' response flashes. They found that females were much more responsive to the longer light flashes. "We were curious to know why females should care s...UCLA biologists elucidate fertilization process
...e Foundation. Riffell and Zimmer have been able to simulate important aspects of fluid motion as abalone experience it in their natural habitats, and to assign under what conditions the chemical communication process is optimized, and fertilization is therefore maximized. Similar physical mechanisms operate w...Hitchhiking bacteria could compromise the detection of life on Mars
...t for six weeks. These conditions were designed to simulate the dry, cold, oxidizing environment found on Mars. Subsequent analysis of the soil showed that endospores were still alive below a depth of 5mm, suggesting that life is possible in these hostile conditions. The authors speculate, "that if entities r...Scientific innovations, social issues and biobusiness at Bio Tech Helsinki 03
...software environment that can be used to model and simulate cellularmetabolism. Human genetics will be examined in a parallel seminar, with speakers suchas Dr Kari Stefansson, President and CEO of deCODE genetics, a genomicscompany with exclusive rights to a gene bank on the Icelandic population,conducting re...Can't stand the pain? Your genes may be to blame
...scles of the volunteers. The injection is meant to simulate a condition called temporomandibular joint pain disorder, but is also a useful human model of sustained pain, and physical and emotional stress. Subjects rate their pain often (every 15 sec) during the PET scan, and the injection is controlled to k...Pain and the brain: Sex, hormones & genetics affect brain's pain control system
...le, for all the studies. The injection is meant to simulate a condition called temporomandibular joint pain disorder, but is also a useful human model of sustained pain, and physical and psychological stress. Subjects rate their pain often during the PET scan, and the injection is controlled to keep the pain ...Gene targeting technique extended to human embryonic stem cells
...human ES cell field," Zwaka said. "It means we can simulate all kinds of gene-based diseases in the lab - almost all of them." To demonstrate, the team led by Zwaka and Thomson were able to remove from the human genome the single gene that causes a rare genetic syndrome known as Lesch-Nyhan, a condition that ...