National conference to discuss changing rural landscapes
...wn is coordinating the conference with Hansen. The rest of the morning and the first part of the afternoon will focus on land use trends, rates and concepts. The latter part of the afternoon will be devoted to case studies showing ecological and socioeconomic causes and consequences of land use changes. G...Tiny channels carved in plastic enable medical tests on a CD
...a CD, and a computer in the CD player would do the rest of the work," Madou said. "Patients could also have the CD player connect via the Internet to the doctor's office for a medical consultation or for storing the data in a central data bank." As the CD spins inside a CD player, centrifugal force pushes...Defining a niche that regulates stem cells
...mechanism to keep it from differentiating, but the rest of the stem cell regulation may be more influenced by signals from the cells that make up the niche. "This view of a stem cell and how it's regulated makes it very easy to understand the plasticity of stem cells that has been reported in several r...Prosthetic limb to be controlled by microchip: Agreement signed to create smart leg
...ve lives rather than be confined to wheelchairs or rest homes. The leg is intended to simulate a human gait whether on uphill, downhill, or even irregular terrain. To do so, a microprocessor-controlled module implanted in the leg will respond to sensor input from multiple sources. The microprocessor wi...Changes in North American land use have had major impact on global environment
...study puts that figure at only 2 percent, with the rest coming from the recovery of forests on land that had been cleared for agriculture in the 1800s. In a collaboration between scientists at Princeton, the University of New Hampshire and the U.S. Forest Service, the researchers performed a careful analy...How much of the world do we really see?
...er. Rather, we log what has changed and assume the rest has stayed the same. Of course, this is bound to mean that we miss a few details. Experimenters had already shown that we may ignore items in the visual field if they appear not to be significant-a repeated word or line on a page of text, for instanc...Venomous dinosaurs really existed
...ds have been found in the same formation, what the rest of the animal was like isn't clear....Study provides new details of 'the birth of a virus'
...s a "bubble" that seals the viral RNA off from the rest of the cell (see accompanying illustration). Tho...e - remaining attached and posing no threat to the rest of the body. The new study fills in some of the gaps in scientists' understanding of how the late d...Cats comforted by synthetic chemical, research suggests
...sed to synthetic FFP while the rest of the cats (three healthy, seven ill) were exposed to towels that had been sprayed with ethanol (the ethanol, which acted as a placebo, evaporated before the animals were placed in the cage...UC Davis study shows spirulina boosts immune system
...o assess spirulinas effect on the immune system at rest and when stimulated to mount an allergic response. After 72 hours, they measured changes in cytokine levels in all samples using ELISA analysis. (ELISA, or enzyme-linked immunosorbent assay, is a sensitive technique for accurately determining the amo...Researchers discover new mechanism of drug that alters genetic makeup of viruses
...ine (C), guanine (G), and uracil (U). Those bases rest on the sugar backbone, resembling one side of a zipper. When RNA pairs, as it does when it is copied, two separate zipper halves come together as the bases connect. Using an assay developed in his laboratory, a symmetrical primer/template substrate...Human Genome project leaves much of human variation unsampled
...tion to accumulate in sub-Saharan Africa as in the rest of the world, writes Disotell. The announcement by Craig Venter, President and Chief Scientific Officer of Celera Genomics, on June 26 2000 that his research group had assembled the complete human genome should, Disotell argues, "be viewed only a......e chemical, electrical and other means to warn the rest of their anatomy to begin producing a repellent. Some plants can send warnings to other individuals (New Scientist, 22 February 1997, p 16). They also detect and respond to changes in light levels, such as those associated with season shifts. Plants...Huge new hydrothermal vent system found on seafloor
...hese events are unique, they believe, because they rest on one-million-year-old ocean crust formed tens of kilometers beneath the seafloor, and because of their incredible size. Dense macrofaunal communities such as clams, shrimps, mussels, and tube worms, which typify most other mid-ocean ridge hydrothe...... elephant seal (Mirounga angustirostris) gives the rest of us pause. With a large fleshy snout protruding from its two-to-six ton body, the male elephant seal can be quarrelsome and scrappy, bellowing during mating season with such ferocity that he can be heard a mile away. Lovable? Why, yes! Scientists f...Natural selection for lactose tolerance
... of early humans from their roots in Africa to the rest of the world. Scientists estimate that this migration occurred before fresh animal milk was available to humans. Dr. Swallow compared the gene sequences of the lactase gene region between modern Africans and non-Africans in order to study the selec...Genes reveal new clues about the first flower
...pically contain excessive errors compared with the rest of the data. After cleaning up their data first with RASA, the team's analyses were in agreement about the root of the angiosperm tree for all three analysis methods and for all three cellular compartments. The Penn State researchers feel they hav......al time in the relationship between people and the rest of nature, helping to promote international collaborative research programs to address some of the most important issues facing society today". "How much biodiversity is conserved and the benefits we derive from it will largely depend on the decision...Reducing sodium leads to substantial drop in blood pressure, finds NHLBI study
...f Hypertension. The DASH-Sodium study lays to rest the long-standing controversy over whether sodium reduction lowers blood pressure in people who do not have hypertension, more commonly called high blood pressure. The study also has important implications for the treatment of hypertension, which af......ich helps explain why they can run faster than the rest of us, according to Joseph M. Metzger, Ph.D., associate professor of physiology and of internal medicine in the U-M Medical School. Parvalbumin works like a sponge helping skeletal muscle cells relax faster by soaking up calcium ions. In a study pub...