Bottom-up Ecological Processes Better For Clear Waters, Study Finds
...nstead, limiting the supply of nutrients in a lake appears to be a strongermechanism for controlling algae blooms, according to a meta-analysis ofeight lake studies involving 11 experiments in Canada, Czechslovakia, Norwayand the United States, said Michael Brett, a staff research associate inthe UC Davis en...A Phoenix From A Ring Of Fire Is A Pattern For The Recovery Of Mount St. Helens
...m is that the volcanic ash from the 1893 eruption appears to be harmless to insect life. In contrast, the initial ash from the Mount St. Helens upheaval was lethal to the insects in its path. It settled on the hard, waxy shell, and then acted like sandpaper, stripping away the waterproofing la...Molecular Imposter Rebuts Long
...ent accurate pairing of bases in DNA. "It now appears that the shape of the DNA bases may be thechief mechanism by which DNA-replicating enzymes selectthe right bases to insert into a growing strand," Kool says. "Theenzyme might form a tight pocket around the DNAtemplate which allows only correctly shap...Team Identifies Switch For Tumor Suppressor Gene
...elson, and post-doctoral researcher Nancy Krucher, appears in the Feb. 14 issueof the Journal of Biological Chemistry . Cancer is a tale of cells growing out of control, and genesthat make proteins that speed up or slow down cell growth areoften pivotal in the disease. One such gene codes for the RBpro...New Study Shows Steps Leading To Colon Cancer
...he National Institute of General Medical Sciences, appears in the March 21 issue of the journal Cell. Besides Peifer, UNC-CH authors are doctoral students Robert Cavallo and Joseph Loureiro. Other authors include Drs. Marc van de Wetering and Hans Clevers of University Hospital in Utrecht, Netherlands, and o...Prostate Cancer's Aggressiveness May Be Predicted Early By The Ratio Of Free To Total PSA
...g a larger fraction of the total PSA protein-bound appears to predict for more aggressive cancer. If these results are confiremed prospectively in a larger group of patients, it may be possible to use the free-to-total PSA ratio to determine which men require early therapeutic intervention and which may be s...New Vaccine Blocks Viral Entry In Cattle, May Have Implications For Human Vaccines
...pletely different part of the immune system, which appears to protect the body's surfaces. Our idea was to stimulate that part of the immune system." Letchworth and research assistant Xiaoping Zhu tested the vaccine on 20 cattle from a herpes-free herd. After vaccinating the animals, the scientists challen...Researchers Find Production Point Of Key Protein In Fragile X Syndrome
...tion within synapses, then normalbrain development appears to stop at an early stage. Findings of the studie...The fragile X protein that is produced at synapses appears to beessential to normal synapse maturation and development of the wiring diagramof the brain," said...Duke researchers find existing drugs can stop fungus that attacks AIDS patients
...gus and not harm people will be necessary. Thatnow appears possible."...Newly Identified Tomato Gene Appears Key To Fruit Softening
...to allow plantcells to elongate during growth also appears to play a key role in fruitripening, according to researchers at the University of California, Davis. The researchers, who identified and cloned the gene in tomatoes, suspectthe gene could be useful for genetically engineering tomatoes, as well asot...Stuttering Appears To Have Strong Link To Family Genes, Researchers Say
CHAMPAIGN, Ill. -- Genetics appears to be a principal factor in the developmentand persistence of stuttering, say researchers at the University of Illinoisand the University of Chicago. The likelihood a child will begin to stutter and the likelihood of continuingdepend a lot on the fa...Merging Physics And Neuroscience: First Evidence Of Self-Organized Criticality In Brain Networks
...anized itself into criticality," said Jung. "This appears to bethe natural state of brain tissue. The question is what happens ifthere is something wrong with the tissue." Phenomena May Provide Clues to Disease Processes Preliminary study of brain tissue removed from epilepticpatients suggests that dise...How Dry Is The Tropical Free Troposphere? Implications For Global Warming Theory
...es. The slight trend that is in thedata actually appears to be downward . These satellite data are verifiedby in-situ measurements of the lower atmosphere made by balloon-borneobservations around the world. Some scientists now believe that this apparent "disagreement"between the predictions by compute...Two Parasitic Wasps Show Promise For Controlling Pest Flies
...s in Illinois. The most common speciesin Illinois appears to be Spalangia nigoraenea , the same speciesthat dominates collections in other portions of the country. A third species, Spalangia nigra , commonly attacked and killed stable flies in thenorth, the researchers reported. The information, Weinzie...Evolutionary Advantage Found For Sex
... a whole population of organisms whoare sexual, it appears more likely that they will carry around fewer mutations.So if you combine sex with natural selection, you end up with a fitterpopulation."...Coming Extinction Of One Of UK's Most Minuscule Plants Yields Information On Climate Change
...s on the quality of the seed bank in the soil. It appears to have very specific ecological requirements and grows on open basalt gravel terraces where there is little competition from other species. It is a small member of the Dock family with large specimens being 4 cms high with tiny greenish flowers abou...Study Focuses On How Plants Help Toxic Pollutants Travel Around The World
... research she already has conducted, she added, it appears thatconcentrations of these chemicals -- probable ...blem, we must understand transmission." It appears that emissions travel from warmer climates to cooler ones,Hornbuckle noted. "If emissions a...New Gene May Intensify Breast Cancer Growth
...th andprogression of human breast cancer. The gene appears to be expressed atabnormally high levels in tumor cells of most breast cancer patients, more thanhalf of cases examined so far. The researchers report their findings in theAugust 15 issue of Science. In many cancers, but especially breast cancer, tum...Female Adolescents Need Calcium During 'Window Of Opportunity'
...s information is completely up-to-date." The study appears in the August issue of the American Journal of Clinical Nutrition. It was used by the National Academy of Sciences' Food and Nutrition Board's Dietary Reference Intake Committee to help establish the new calcium requirements. Weaver is a member of th......, according to PennState researchers. "It appears that leaf physiology is not the only way to look a...ount of energy put into trunk growth. "It appears that the drought tolerance ranking of trees in CentralPennsylvania based on ecological distribution ...