Duke Researchers Discover Central Role Of Nitric Oxide In Hemoglobin Action
...een carrying.One "ineffective" NO is exchanged for another "protected"NO. Blood pressure remains constant and blood flow maintained in order topromote oxygen transport. Hemoglobin detects how much NO has been removedfrom the bloodstream and compensates with SNO, the researchers believe.Still, the hemoglobin-...Dangerous Chemical Combination Presents Possible Scenario For Gulf War Illnesses
...tended purpose is to temporarily shieldand protect another similar enzyme, acetylcholine esterase (AChE), fromnerve gas damage, it cannot distinguish between AChE and BuChE and thereforebinds to both, the researchers said. So, even less BuChE is available tocombat and neutralize DEET and permethrin. "Pyrido...Key to Triplet Repeat Brain Diseases Open Door For New Way To Understand, Treat Genetic Diseases"
...very cell, not just inbrain cells, there has to be another level of complexity that we don't understand." "This is at least an initial insight into the molecular genesis ofthese diseases," Burke said. "It is a novel interaction that mayexplain the increase in severity with increasing repeat size." The res...Researchers Pinpoint Site For Petit Mal Seizures In Brain
...seizures aren't helped by currently used drugs and another 20 percent experience side effects, such as inability to concentrate. The findings were prepared for presentation by Sarah Caddick, a post-doctoral fellow in neurology at Duke and the Durham V.A. Medical Center, at the American Epilepsy Society's an...Duke Geologists Explore Alternative Way To Measure Ice Age Sea Bottom Temperatures
... contemporary ostracod fossil samples collected at another North Atlantic site. Those were alive during the p...e change," said Duke geology professor Paul Baker, another author of the Science paper and a supervising geochemist. "The temperature of the deep water through......particles. The process transmutes U-238 first into another uranium isotope, U-234, and then into an isotope of the element thorium, Th-230. Thorium, unlike uranium, does not dissolve in water. Therefore, scientists reason, all Th-230 found in limestone must be the product of radioactive decay of U-238. By ma...Rosemary May Have Anti-Cancer Properties
...studies demonstrating the anti-cancerproperties of another flavoring agent: garlic. "We had worked with garlic and were curious if other compounds withantioxidant properties, such as the compounds in rosemary, would inhibitbreast cancer," he explains. The rosemary study was funded by the American Institu...Transgenic Rice Plants Resist Insects, Drought And Salt Damage
...ds some 40 laboratories in developed countries and another 80 in developing countries where scientists are trained to help their countries become more agriculturally self-sufficient. Transgenic plants from both technologies are in advanced stages of testing, with large field tests scheduled this year in Chin......rochroa beetle is borrowing a defensive agent from another insect and is using it to buy access to the female -- then rewarding the female's favor by endowing her and their offspring with the defensive agent." Insect use of cantharidin as a defensive chemical is not unique to the Neopyrochroa beetles, Sm...DNA Techniques Allow Scientists To Become Pollution Detectives.
...or animal. By taking one thread from oneentity and another thread from someone else and then applying anenzyme to it, the enzyme will cut each thread in differentplaces. "Then, we look at the number of cuts and where they are todetermine if it is a person or an animal," Tamplin explained."What we start to se...Water Recycling Project Tested in Turkey Plant
...their chill water. Researchers are also exploring another use of ozone in the food safety process.The current rules allow application of ozone only when the water passesthrough the cylinders but not in the chiller tanks where the poultry isbeing cooled. Studies by Waldroup and Forsythe have shown that direc...Humble Pocket Gophers Shed Light On The Genetic Fortitude Of Cheetahs
...an transplants--from each other. "No one had found another wild animal that could tolerate skin transplants from other members of its species, so people disbelieved the cheetah results," says conservation biology pioneer Michael Soule, research professor of environmental studies at UCSC and adviser to Sanjay...Hawaiian Whales Show 'No Overt Response' To Sounds Of ATOC Simulation
...by pods of humpbacks carried on as if it were just another noisy day in the ocean. "In 84 trials beginning in February and continuing through March off the Kona-Kohala coast of Hawaii, we saw no overt response from the whales. For example, a cow-calf pod remained about 100 meters from our playback boa......he wheat version, orvice versa." Pevzner noted yet another complication."The genes themselves,while related, are quite different.The mouse-edition gene is writtenin mouse language; the human-editiongene in human language. It's alittle like German and English,which are related languages: manywords are identic...Human-Like Ability, Categorical Perception, Found In Insects
...rnell Professor of Psychology Elizabeth Spelke for another category of notoriously uncooperative research subjects, human babies. Spelke's habituation-dishabituation test determines precisely what stimulus level is "different enough" to get a subject's attention when it has grown accustomed to (or habituate...Duke Primate Center Sets October Expedition To Find 'Juliet'
...ture three diademed sifakas -- a mate for Romeoand another breeding pair. Once captured, the animals will be ...ter in fall 1993, along with his motherTitania and another unrelated male Oberon. The three animals were the firstdiademed sifakas ever brought into captivity ......o be part of the bird's song production system, or another region called the RA, a subordinate region that receives input from the HVc and activates the muscles of the syrinx--the bird's voicebox. They recorded electrical activity just outside individual brain cells of interest, and compared the signal with ...Component In Soy Products May Be Substitute For Estrogen Treatment
...h a standard levelof 56 milligrams of isoflavones, another had products with 92 milligrams. The higher level of isoflavones produced significant improvements in thebone densities in the women's lumbar spines -- a key location for assessingosteoporosis, a common disorder of aging women that is marked by a pr...Cholesterol Anchor Helps Signaling Proteins Direct Development
A quirky genius of the protein family has sprung another surprise on scientists, and its newest stunt has revealed that cholesterol, often villified for its role in heart disease, actually wears a white hat during the earliest stages of life. In this week's Science, Johns Hopkins and Howard Hughes Medical...Duke's Russian Laser Making Ultraviolet Light And Gamma Rays
...e up-and-down quarks within protons andneutrons -- another major unanswered question in nuclear physics, Welleradded. Boosting gamma energies that high would require a major upgrade of the FELLaboratory's electron ring system. TUNL officials have already approachedthe Department of Energy about possible fun...