Tag: "limits" at biology news

Gene Discovery Could Overcome Aluminum Barrier To Higher Wheat Yields Worldwide

...d soils. "No plant likes aluminum," he said. "It limits crop productivity on a large scale around the world." Overseas and in this country, about 5 billion acres of acid soil harbor aluminum, he said. "Now that rye's anti-aluminum gene has been located, the goal is to put it to work using biotechnology i...

New Vaccine Blocks Viral Entry In Cattle, May Have Implications For Human Vaccines

...enough to infect some animals so we could find the limits of protection. Despite that huge dose, 70 percent of the cows remained free of the virus." Letchworth also tried the conventional approach in which he injected the vaccine into muscle. When he challenged those cattle with the virus, the vaccine did ...

Supelco Licenses ORNL Solid Sorbent Air Sampling Material

... ofmaterials because it allows us to achieve lower limits of detection thanwere once possible," said George Wachob, Supelco's manager of research anddevelopment. The ORNL air sampler comprises a tube containing a sol-gel sorbent, whichis an organic-inorganic composite material. The sol-gel sorbent trapcoll...

First-Of-A-Kind Study By University Of Georgia Ecologist Estimates Role Of Natural Forces On Insect Populations

...ectpopulations mostly on natural enemies or on the limits of plantquality. "More recently, a balanced view has emerged in which bothnatural enemies and plant quality or quantity interact toinfluence the population ecology of herbivores," said Hunter."Data is often not collected at an appropriate scale ...

Limits Of Life On Earth: Are They The Key To Life On Other Planets?

...ted to diverse environments, and shed light on the limits within which life can exist." NSF's directorates of biological sciences; engineering; geosciences; mathematical and physical sciences; and office of polar programs are providing total funding of $6 million to explore the relationships between or...

Columbia Biologists Match Odor Receptor To Odor; Research Uncovers How Sense Of Smell Works; First Aroma Scientists Detect Is That Of Meat

...ye as biological detectors evolved to the physical limits of perception. The work was supported by the McKnight Foundation, the WhitehallFoundation and the National Institutes of Health. This document is available at http://www.columbia.edu/cu/pr/ . Working press mayreceive science and technol...

Infants, Toddlers Should Not Restrict Fat Intake, Experts Say

...e in children reduces growth and visual acuity and limits mental development. "For example, omega-3 fatty acids -- which come from fish and certain plant oils -- are crucial for brain development and for development of the retina," Watkins says. The researchers conducted a scientific review of available inf...

Microsurgery Made More Accurate With Virtual Measuring Tool

...rement error quantified was well within acceptable limits for most surgical procedures. It is important to note that the small errors observed here may have resulted from inherent limitations in the human operator's ability to perform the alignment task, since this task relies solely on retinal disparity ...

New Chemical Processing Technique Being Studied At UW May Hold Key To CleaningUp Hanford, Reducing Industrial Waste

...periments to explore thefundamental properties and limits of the new hexacyanoferrate m aterials being used. "One problem is that this material can only be re-used for a certain number of cycles before it dies;its molecular structure apparently changes so it no longer binds and releases cesium using electri...

Short-Course TB Prophylaxis Effective In HIV-Infected Individuals

...n people with HIV, but poor compliance limits the effectiveness of this regimen," explains Dr. Gordin, principal investigator at NIAIDs CPCRA Unit in Washington, D.C. In most clinical settings, he says, compliance rates for patients receiving INH to prevent disease typica...

Human Cloning: Grappling With Reality Penn Bioethicist To Explore The Facts Behind The Hysteria

...ned. The safety of theprocedure; the imposition of limits on what the clone can be and become insociety and the emotional burden that cloning places on the clone are theprimary issues. These issues combined with the issue of imposing knowledgeabout the clone's biological fate without the prior, informed con...

DNA Used To Create Self Assembling Conducting Wire: Breakthrough Will Lead To Next Leap In Emerging Nanoelectronics

...ndard process, using photolithography, reaches the limits of miniaturizationat about 250 nanometers. In principle we could have wires that are 100 timesnarrower than that, according to the researchers. In electrical tests of the nanowire, the Technion team discovered apotentially useful property. Un...

Malthus + 200: Disastrous 'Correction' Looms

... is the observation that population expands to the limits imposed by means of subsistence. Malthus believed, says Price, that the tendency for population to outstrip its means of subsistence is counterbalanced by "preventive checks" such as infanticide, abortion and contraception, and by "positive checks" ...

Extra Choline During Pregnancy Enhances Memory In Offspring

...e the pregnant rats received waswell within normal limits -- about three times more than the control groupreceived. The only time they received additional choline was during a five-dayperiod -- days 12 through 17 -- of their 22-day gestation period. The controlgroup received a normal dietary amount of choli...

Desert Researcher Receives Environmental Award

...very expanded what was formerlyconceived of as the limits of life on the planet. He discovered that somemicrobiota were hidden from view under the surficial crusts of porous rocks. Prior to his work, it was commonly thought was that there were no growingmicroorganisms in the cold and hot deserts of the wor...

USGS Says Central Columbia Plateau Water Quality Impaired by Agriculture, But Some Good News

...rently used pesticides at concentrations above the limits recommended for protecting aquatic life. Soil erosion, a long-term problem for farmers in the Palouse River Basin, transports some soil to streams, degrading habitat and carrying with it older pesticides and their breakdown products. A breakdown pro...

3,500 Earth And Space Scientists To Report Latest Findings At Boston Meeting

...fields ranging from theEarth's central core to the limits of the solar system at the May 26-29 SpringMeeting of the American Geophysical Union in Boston. This will be AGU's firstmeeting in Boston and several of the scheduled sessions are of particularinterest in the area, including those on earthquake hazar...

New Machine Slashes Time, Cost To Make Unique Lenses

...s are susceptible to heat andhumidity, and molding limits their glass counterparts to adiameter of about an inch. Even before reaching the mass-production stage, companies often spend hundreds of thousands ofdollars creating asphere prototypes the old-fashioned way; Goliniexpects that much of the demand for...

As A 'Carbon Sponge,' Iron-Poor Coastal Waters Can't Always Do The Job, NaturePaper Shows

...rnia at Santa Cruz, discovered that a lack of iron limits phytoplanktongrowth in waters along one of the nation's best-known shorelines: just off thescenic cliffs of Big Sur in the Monterey Bay National Marine Sanctuary. Thesecentral California waters are rich in plant 'fertilizers' such as nitrate,silicate...

News Backgrounder: Duke Primate Center Successfully Fosters Mysterious Aye-Ayes

... a crack." Now that he has established the limits of the aye-ayes detectingability, Erickson is attempting to understand their foraging strategy. In hislatest experiments, he has created subsurface mazes, and then refilled them withpacked sawdust, just as a boring insect would leave behind as it ate...

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