Bark Beetle Infestation Spurs Multifaceted Study
...ea. The solution is toallow salvage harvesting and controlled burning, so that the forests canreturn to a health...lingthem off. However, before salvage logging or controlled burning can take place, afull investigation of the archaeological sites and the environment is under...Siblicide In Nature: Study Of Galapagos Seabird Finds Death Can Ensure Species Survival
... determine whether parents, or offspring, or both, controlled the siblicide. In masked booby chicks raised by blue-footed booby parents, siblicide happened in 80 percent of the nests, compared to the normal 100 percent when masked booby chicks are cared for by masked booby parents. About half of the blue-foot...Scientists Identify Gene For Sexual Behavior In Male Flies
...r and sexual orientationare specified by genes and controlled by the nervous system," Wassermansaid. "Our data so far suggest that fru is involved in interactionsbetween a handful of specific brain cells that in some way direct thevarious steps of male courtship behavior and copulation," Taylor said."This is ...Team Identifies Switch For Tumor Suppressor Gene
...the brakepedal, reining in growth in a precise and controlled manner.Disable that brake pedal and cells can grow out of control." The team's research is funded by the National Institutes ofHealth and by the Sally Edelman and Harry Gardner Cancer ResearchFoundation of Hilton. Several times a year the group ...Cell-Membrane Proteins Appear To Play Key Role In Squid's Swiftness
... channel issue. They lookedat how the channels are controlled by electric fields over a wide voltagerange, asking how the fields may affect the rapid firing of nerve impulses. In May's Journal of Neurophysiology, they will report that sodium gatewaysare much slower in non-squid mollusks in a normal voltage ran...Bacterium gobbles up chlorinated pollutants
...o a known carcinogen," Gossett said. In carefully controlled laboratory conditions, however, Strain 195 goes all the way. That doesn't mean the Cornell bioremediation researchers will start injecting truck loads of Strain 195 into pollution sites. For one thing, 195 is difficult to grow by itself; it seems to...Merging Physics And Neuroscience: First Evidence Of Self-Organized Criticality In Brain Networks
...ork. The spontaneous formation ofcalcium waves is controlled by the amount of kainate present at thecells. Experimental Work Agrees with Modelling In experimental work using the hippocampus of day-old rats,Cornell-Bell observed the formation and movement of these wavesusing a dye that fluoresces in the pres...Calorie Restriction Reduces Age-Related Muscle Loss
...s the first to show that even startingrodents on a controlled diet in midlife produced longer-lived, healthieranimals. A researcher at the Geriatric Research, Education and ClinicalCenter at the William S. Middleton Veterans Hospital and UW-Madison,Weindruch and colleague Judd Aiken, associate professor of ani......-ARS. "There are probably more pests and diseases controlled by breeding inwheat than in any other crop." ...emicalpesticides to deal with pests that cannot be controlled through conventionalbreeding, Cook noted. "This policy creates a major disincentive for all ...Study Focuses On How Plants Help Toxic Pollutants Travel Around The World
...ed to varytemperature. Its environment also can be controlled for humidity. Before any plants are introd...s,Hornbuckle noted. "If emissions are not controlled and are produced in warm parts of theglobe, they're going to go up to cooler climates quickly. We ne...Scientists Discover How Genes Work Together To Control Neural Development
...resulting in uncontrolled cell division ratherthan controlled cell differentiation." Last year Lai discovered an important clue about how a component ofthe signal-transduction pathway--a special kind of cell-growth regulatorknown as a neural inhibitor--works genetically. He found that proto-eyecells could bec...Experts: Public Will Accept Irradiation In Wake Of Meat Recall
...elieve. Pauli says the source of radiant energy is controlled and limited to cobalt 60 and cesium 137. "It's known that they can't make the food radioactive," he says. Different levels of irradiation are used on different foods, and those regulations may vary from country to country, Pauli says. Mason says ...Trojan Horse Virus Controls Hiv Infection
...t. 5 in the journal Cell, this strategyeffectively controlled HIV infection in laboratory-grown T cells anddramatically reduced infectious HIV to levels that were barely or no longerdetectable. "This is a completely new approach, targeting a virus to an infected cell,"explains the study's senior scientist, John...Plant-Based Therapies Examined For Colon Cancer Prevention
...ks. During the first two weeks,participants eat a controlled diet so that initial information can be collected. In the following weeks, the investigators randomly assign the participants tocontinue on the initial diet alone or a diet supplemented with one of the plantphenolic compounds or sulindac, the NSAID....Scientists Find New Trigger For Nerve Cell Death
... also die, killing themselves through agenetically controlled process called programmed cell death or apoptosis.Scientists previously have focused attention on changes in the amount of calciumcontained within cells undergoing apoptosis. But Yu's experiments suggest that amass exodus of potassium may be just as ...Stress Lowers Sperm Count By Overwhelming Cells That Make Testosterone
...rwhelms the Leydig celldefense mechanism, which is controlled by an enzyme called, for short, 11ßHSD-1.The cell produces only enough 11ßHSD-1 to cope with normal amounts ofglucocorticoid. The surfeit of hormone overwhelms the capacity of 11ßHSD-1 toneutralize it, shortcircuiting testosterone prod...Biological Clocks No Longer Found Only In The Brain
... 24-hour rhythms (biological clocks) are centrally controlled by the brain. Using the fruit fly as a model system to study circadian rhythms, the researchers -- led by cell biologist Steve Kay of the Scripps Research Institute in San Diego, California -- sought to determine whether individual body parts wo...Natural Variability Is Key To River Restoration
...n in the U.S." Because the lower Hudson never had controlled flows, Bain said, the river remains a stronghold for many Atlantic Coast migratory fishes. French Creek (river-sized system in New York and Pennsylvania): "Retaining its record-high diversity of fish and mussels, this large stream holds species tha...Premies' Lung Disorder Can Cause Developmental Delays
...andard tests for mental and motor development, and controlled for medical and social factors that could also affect the children's outcomes. Singer said that the phenomenon of these very young infants surviving is a recent development for which health professionals lack data on long-term development. "As a re...Fauci: New Findings Help Explain "Rebound" Of HIV In Patients Who Discontinue Triple-Drug Therapy
... "HIV disease is a multifactorial process controlled by the complicated interplay of stimulatory and inhibitory factors concentrated in the lymphoid tissue, the centers of immune activity in the body," Dr. Fauci notes. At the Chicago symposium, Dr. Fauci will pres...