Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey
... years old and started growing in 1776. Then, you compare the pattern of its rings with those from a piece of wood from a building you know was built in 1860. You keep doing the same with earlier and earlier samples of wood." While the researchers stress that they have not yet achieved an absolute chronolo...Bottom-up Ecological Processes Better For Clear Waters, Study Finds
...al Academyof Sciences. Next, the pair set out to compare this top-down hypothesis with the "bottom-up"effect of nutrients upon the quantity of algae. The UC Davis researchers looked at data reported in eight papers from 11experiments testing the impact of adding fish versus nutrients to food websand compa...Resistance To Leptin Contributes To Obesity
...overed theirweight by eating more food. To compare leptin's affects via injection and ICV infusion amongoverweight mice, the researchers selected strains of mice with differenttypes of obesity. One type, the Diet Induced Obese (DIO) mouse, is leanwhen fed regular mouse chow, but has an inherited pre...Plant-Based Therapies Examined For Colon Cancer Prevention
... In the study, Shiff and his colleagues will compare three plant-derivedcompounds, curcumin, rutin and quercetin, to the NSAID sulindac. The study willdetermine whether these naturally occuring chemicals, all potent antioxidantsand antiinflammatories, can affect cells in a similar manner as sulindac, ...Limits Of Life On Earth: Are They The Key To Life On Other Planets?
...hope to uncover extinct genes or gene fragments to compare with modern counterparts. What is the telltale signature of past life in extreme environments? The University of Rochester's Ariel Anbar and colleagues will study whether stable isotopes of key metabolic metals fractionate -- and leave their "John...NIDR Supports Total Genome Studies Of Major Oral Pathogens
...ng the DNA sequence of Aa will allow scientists to compare these organisms at the molecular level. This information willprovide valuable insights into the basic mechanisms used by these bacteria todestroy human tissues. Sequencing the Aa genome will also contribute to the overall bacterial DNAdatabase. Thi...Purdue Researchers Track Oil Spill's Effects On Sea Otters
...y harbors and channels. It would be interesting to compare the level of exposure in animals in contaminated areas to those in remote areas, and perhaps develop some kind of risk assessment for animals in various locales."...Biodiversity Worth $2.9 Trillion
...al BioScience . (Vol. 47 pp. 747-757). "When you compare our spending (to preserve biodiversity) to the benefits we reap, we're really getting a bargain," said David Pimentel, the professor of ecology who led eight graduate students in Cornell's College of Agriculture and Life Sciences through a rigorous a...Peptic Ulcer Treatment Improves Health, Saves Money
...M, used a computer simulation of ulcer patients to compare the clinical and economic outcomes for subjects divided into two treatment groups. One group received medication to immediately eradicate the H. pylori bacteria. Patients also halted antisecretory maintenance therapy. The second group continued an...Colon Cancer Linked To Genes, Not Lifestyle
...ses more closely in monkeys and compare it to that in humans," said Uno. "Few populations of aged monkeys were in captivity up until about 15 years ago." Uno said the data will be valuable to scientists working on ...Virginia Tech Engineers Help Mother Nature Clean Up
...rringin the planted areas at the Oneida site is to compare the plantedareas with the unplanted regions with similar levels and typesof contamination," the environmental engineers report. Widdowson and Novak's project should takea little less than three years to complete....Salve From Serpents? UD Studies May Explain Why Viper-Venom Protein Stops Tumor Spread In Mice
...n is so selective," McLane explains. How does she compare the two proteins? First, she manipulates a gene containingthe code for echistatin to create mutations within echistatin's RGD loop. Next,she places the resulting DNA (deoxyribonucleic acid) in a bacterial expressionsystem, thereby forcing the bacteri......teach thesechildren how to design experiments that compare situations or conditions thatdiffer in only one variable while keeping all other variables constant so thatvalid conclusions can be drawn. Then, through a series of questions to elicitchildren's explanations of their own experimental designs, Klahr a...Women Can Inherit Drinking Problem Too, Study Finds
In the first major twin study to compare genetic and environmental factors thatcontribute to the risk of alcoholism in both sexes, researchers have found thatgenetics plays an important role in determining alcohol dependence in women aswell as in men. The study contradicts the long-held ass...Reclaimed Waste Water Can Augment Municipal Drinking-Water Supplies But Concerns Must Be Addressed
...government should undertake populationstudies that compare the disease rates over time among individuals exposed toreclaimed water to the disease rates among individuals who use a different water source. > Monitor the reliability and operation of water treatment systems. There are two essential keys to...Can The Economic Promise Of Drug Discovery Continue To Preserve The Suriname Forest?
... than plants collectedat random.' So we decided to compare the activity of extracts from plantscollected by CI and the Missouri Botanical Garden," Kingston says. Using yeast-based assays, the Virginia Tech researchers found there wasa slight benefit to the ethnobotanical approach: 2.8 percent of the ...Purdue Herbarium -- A Noah's Ark For Egyptian Plants
...ain pollutant in plant tissues collected today and compare that to levels of the same pollutant in tissues of similar plants collected years ago. The comparison can tell you how pollution levels have changed."......s and fossil hominids.Thus, the scientists plan to compare these blood vessels in apes and humans toconfirm that they are similar. The researchers will also conduct measurements of more fossil hominidsto fill in the roughly two-million-year gap between the fossils ofAustralopithecus and the archaic h......ously. This technique provides a key to record and compare the electrical properties of the presynaptic calcium channels, and thus it became possible to address the question whether R-type channels are at the presynaptic terminal. Simultaneous recordings of the presyna...... species, Bleiweiss was able to compare and chart "genetic distances" between the amino acid base pairs that make up hummingbirds' genetic material. Those distances, says Bleiw...