Tag: "based" at biology news
Novel approach yields predictions validated by experiments
...sitates the use of advanced mathematical equations based
upon biochemical systems theory to describe dynamic biological processes, Void said. These processes include feedback mechanisms that work to stabilize a system much like a thermostat maintains a constant temperature. Such mathematical models could h...
Molecular probes for biology research and drug discovery
.... The chemical compounds will be designed and made based
on natural products analogues, via combinatorial c...cells or of complete organisms. Using fluorescence based
methods it is possible to localize and quantify special optical markers. Once a substance with a spe...
Green tea extract boosts exercise endurance 8-24%, utilizing fat as energy source
...term ingestion of GTE that is beneficial." (Murase based
his calculations of mouse-to-human tea/GTE consumption equivalents on work his lab is doing on the anti-obesity effects of GTE on mice and humans.) In an era when professional and amateur athletes are always looking for ways to improve performance, a...
UCLA researchers detail the evolution of quantum dot imaging in the journal Science
...ctors the locations of tumors throughout the body, based
on targeting the PET probe to a single tumor marker. With qdots, however, several different markers of the same tumor could be simultaneously "painted," generating a color barcode for real-time "optical biopsy" and diagnosis. "Humans have close to 40...
Calcium may protect women from cancer
...were ranked in order of increasing calcium intake, based
on the dietary practices the women reported at the...st group. The women also were divided into groups based
on their intake of calcium from supplements. Women who reported consuming 800 mg/d of calcium from s...
Monkeys pay per view
...pontaneously discriminate between images of others based
on the social rank or classification of individuals....
Wider use of simpler cervical cancer screening could benefit women in developing countries
...ignificance of any positive result. The article is based
on a study of 1,921 women carried out at the Peruvian Cancer Institute (Instituto de Enfermedades Neoplsicas) in 1999 and 2000. Both VIA and Pap smear screenings were used. According to Dr. Jeronimo, the study showed that while "26 percent of women w...
Reviewing scientists say proposed conservation measures unlikely to help whales
...heir boundaries because they were designed largely based
on political considerations rather than by scientific criteria. Our analysis shows that the science-based harvesting plan known as the Revised Management Procedure (RMP) would be much more effective in encouraging growth of whale populations." Model...
How many comparative genomes are enough?
... this question. "We shouldn't make these decisions based
on seat-of-the-pants intuitions," Eddy said. "It's important to lay out the case that these genomes really do have tremendous value for analyzing the human genome sequence." According to Eddy's model, critical tradeoffs are associated with deciding ...
Scientists reveal cells' 'energy factories' linked to cancer
... and activity. The Cancer Research UK researchers based
at the University of Glasgow's Beatson Institute for Cancer Research in Glasgow have found out how the excessive build-up of a simple metabolic molecule in mitochondria can trigger a sequence of events that leads to tumour growth. The discovery incr...
US government list of cancer-causing agents grows
..."reasonably anticipated to be a human carcinogen," based
on inhalation studies in animals which showed it c... "reasonably anticipated to be a human carcinogen" based
on inhalation studies in laboratory animals that showed it causes adrenal gland and lung tumors. Dia...
Please, do disturb
...y the addition of noise to the system. The results based
on their model study imply that oscillatory behaviour in many natural systems, rather than being disturbed by noise, is thus sustained by it. For instance, the "noise" in a marine ecosystem due to temperature changes, ocean currents, wind-driven wave...
Physicists discover temperature key to avalanche movement
...can measure the temperature of a granular material based
on the degree of agitation of its component particles. The researchers also discovered that, unlike usual liquids, temperature varies depending on which way and how far they insert the "thermometer" into the granular material. Being able to measure "...
Blocking cell signaling can stymie viral infections, study shows
...tbreak of the disease. The approach we've taken is based
on a new understanding of the basic mechanisms of viral reproduction and movement the actual steps that take place once a virus has invaded the body." In the study, Reinherz and his colleagues at Dana-Farber (Hailin Yang, PhD, Mikyung Kim, PhD, ...
Assessment of recent rapid land-cover change yields portraits of global human impact
...ndonment, and urban settlements. The assessment is based
on data compiled from remote sensing and censuses as well as expert opinion. The results indicate that whereas Asia has the greatest concentration of areas of rapid land-cover change, in particular dryland degradation, existing data do not support th...
Experimental radar provides 3-D forest view
... Extra information can also be gathered on a site based
on the fact that radar signals can have different polarisations; just as visible light does as demonstrated by the high amount of glare screened out with polarized sunglasses. Envisat's Advanced Synthetic Aperture Radar (ASAR) is a dual-polarisatio...
Self-organization and vegetation collapse in salt marsh ecosystems
...tem destruction. They model salt-marsh development based
on the mutually enforcing interaction between plant growth and accumulation of sediment. Observations from Dutch salt marshes confirm the model predictions that at first, plant-sediment feedback buffers the salt marsh from the strong physical gradie...
Fleshing out the genome
...consortium of scientists led by BIATECH, a Seattle based
non-profit research center, and Pacific Northwest ...ery sequences biological function and ranking them based
on their similarity to genes known to encode proteins. Proteins are the workhorses of the cell, play...
Not-for-profit publishers call NIH public access rule a missed opportunity
... and publish a significant portion of the articles based
on NIH funded research; It will limit the ability of scientific societies to partner with NIH to nurture the next generation of scientists and future NIH grantees; and It will create confusion and put authors at risk of inadvertently violating cop...
'Man the Hunter' theory is debunked in new book
...redators and Human Evolution," poses a new theory, based
on the fossil record and living primate species, t... evidence they did. Sussman and Hart's research is based
on studying the fossil evidence dating back nearly seven million years. "Most theories on Man the Hu...
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