Tag: "theory" at biology news
Lizard research bolsters theory that forest edges are hotbeds of speciation
...The research presented in PNAS extends the ecotone theory
to Australia. Based on studies of Carlia rubrigularis, a common skink, or lizard, prevalent throughout Australia's wet tropical rainforests and dry open forests, lead author Chris Schneider of Boston University and co-authors Smith, Brenda J. Laris...
Major grant to aid McGill University professor's efforts to improve school science teaching
...low. From the recent Kansas decision to remove the theory
of evolution from the State's school curriculumto ...be instructed in currentscience education learning theory
and teaching methods at McGill University and will use theuniversity's science teaching laboratories...
A relative of smallpox is first virus found to invade cells as HIV does
...e of immune cells. Its discovery strengthens a new theory
on the origins of a rare, life-saving immunity to ...ive relative of smallpox strengthens an intriguing theory
about the origins of a rare immunity to the HIV virus, so far found only in a small percentage of Ca...
Chemistry to play major role in solving 21st century challenges
...mpanies, Dow and DuPont, which are striving to put theory
into practice in the areas of economic growth, environmental balance and social progress A Global View of Earth's Water "The story of water is really two stories. Water for the rich and water for the poor," writes C&EN contributing editor Wil ...
Threatened Galapagos plants are focus of biologist's field guide
...lished his "Origin of Species," which proposed the theory
of evolution. "Flowering Plants of the Galàpagos" is published by Cornell University Press and contains aforeword by Sir Ghillean Prance, director of the Royal Botanic Gardens in the United Kingdom....
Big brother has a lot to answer for
...ch successive male would boost that response. This theory
is backed indirectly by other studies. One showed that the placenta, which protects a fetus from the mother's immune system, increases in size with each successive male. The good news is that brothers pose no risk to girls. "Even though mum's immu...
One theory solves two ancient climate paradoxes
... Calif. -- A Penn State meteorologist has a single theory
that could solve both the Faint Young Sun problem and the Snowball Earth problem if it proves to be correct. "I looked at the climate problems in the Archean, 3.8 to 2.5 billion years ago, where the environment was very warm with a sun that is much ...
Sexual fantasies increase pain tolerance
... of Wisconsin. The work, which tests the authors' theory
about the relationship between pain and mood, coul...patients experiencing pain," Staats says. The new theory
indicates that pain stimuli yield strong negative emotional responses. Operatingon that premise, co...
Most highly endowed promotion prize for fourteen scientists and scholars
...ing a bridge between a methodically rigid language theory
and the actuality of the unsystematic, vague, incoherent human languages. He has devised a theory
which permits precise acquisition of vague and other undetermined expressions, and has developed a p...
Genes pertaining to 'maleness' evolve more rapidly than their non-sexual counterparts
...ry different from one another. A well established theory
in genetic evolution states that even after millions of years of evolution, homologous genes in closely related species, such as humans and chimps, are barely distinguishable from one another. That the human and chimp sperm genes were so radically d...
University of Chicago researchers uncover first steps in cell-cell adhesion process
...ctions don't form at all, further boosting the theory
that adherence junctions are calcium dependent. Next, Fuchs and her colleagues looked more closely at the puncta. Christoph Bauer, a postdoctoral associate in Fuchs' lab and co-author of the paper, noticed that in response to calcium, the s...
Pioneering evolutionist Ledyard Stebbins dies at age 94
...idered to be the classics that formulate themodern theory
of evolution, Ayala said. A national symposium rev...ersity in 1925, Stebbins was introduced toDarwin's theory
of evolution. As a junior the following year, he decided to become a botanist. Darwin's theory
Transgenic fish could threaten wild populations
...of sexual preference over Charles Darwin's classic theory
of survival of the fittest isnot unknown to wildlife specialists and geneticists. Muir likes to use the example of the male bird ofparadise with its long swells of gloriously colored plumage as an example: "The male bird of paradisewith the longest, ...
Common anti-inflammatory drug rescues low-growth fetuses in mouse study
...xane, might be a key to IUGR. A way to test the theory
would be to develop a mouse in which the action of thromboxane was increased, see if IUGR or a similar condition emerged during pregnancy, and then administer a COX inhibitor like indomethacin with the aim of rescuing the affected fetuses. By genet...
UF dental researcher develops genetically altered bacteria strain that may fight cavities for a lifetime
...amel, causing cavities. "Based on this accepted theory
of the decay process, we eliminated the gene responsible for lactic acid production from a strain of Streptococcus mutans," said Hillman, a professor of oral biology at UF's College of Dentistry. "The new strain does not produce lactic acid and ther...
Emerging 'R&D' patterns in genes may reduce evolution's risks
... Johns Hopkins University. If it is confirmed, the theory
could aid researchers in their efforts to analyze genetic information from humans and other species. With support from the National Institutes of Health, Hedgecock and other researchers conducted an extensive computerized comparison of the sequence o...
Possible cause and treatment for shock uncovered by UC San Diego bioengineers
...to digest our food," said Schmid-Schoenbein. "Our theory
is that when blood pressure falls sharply in the intestine, pancreatic enzymes in the intestine start to escape from the lumen of the intestine (where they digest food), into the wall of the intestine (where they don't belong). These enzymes produce...
Revised model of protein-drug interactions could make job of drug designers a little easier
...or image. Now scientists claim that a 50-year-old theory
explaining how proteins and enzymes discriminate s...ates because of this misconception. "The reigning theory
of how enzymes distinguish between very slight differences in molecules is the three-point attachmen...
Unusual mussels may use whale bones en route to hot sea-floor vents
... describes findings that support the controversial theory
Smith and co-workers first published in Nature in 1989 and further developed with Baco--that rotting organic material such as whale bones and wood may have served as evolutionary stepping stones for animals to colonize hydrothermal vents. Since the ...
Genome scientists muster computer software tools for handling the flood of raw data from the Human Genome Project and related efforts
...g the use of a new statistical method based on the theory
of support vector machines (SVMs). SVMs are able to handle high-dimensional datasets in which each data point has many features or attributes. "It's hard to visualize because we live in a three-dimensional world, and we're talking about analyzing d...
1 2 3 4 5 6 7 8 9 10