Tag: "sudden" at biology news
Study Associates Asteroid Or Comet Impact With Extinctions In Argentina
...r, Schultz and colleaguesoffer evidence of a sudden
drop in both atmospheric and water temperaturesalmost 3.3 million years ago. The finding indicates that a climate changeoccurred shortly after the glass appeared and just prior to the animal lifeturnover. "This research is analogo...
UNC Researchers Develop New Way To Measure Acid Level Of Body Fluids
...m disturbances such asventricular fibrillation and sudden
death," he adds. In terms of pH in the human body, metabolic actions occur properly when fluidsare close to chemical neutrality ? neither too acid nor too alkaline. On a scaleof zero to 14, a pH of below 7 signals acidity. In cardiac tissue, ischemia...
Nuts And Oats May Build A Strong Heart
...urbance called ventricular fibrillation thatcauses sudden
death. When the heart lapses into ventricular fibrillation, itcannot pump blood unless shocked into a normal rhythm with an electrical devicecalled a defibrillator. Albert says previous studies in animals have hinted atthis link as well. Other sour...
Killer Whales Have Begun Preying On Sea Otters, Causing Disruption Of Coastal Ecosystems In Western Alaska
...several linesof evidence, Estes said. First is the sudden
increase in observed attacks. Acareful statistical analysis found it extremely unlikely that the cluster ofrecent observations was due to chance alone. The researchers also compared sea otter populations at two sites on Adak Island,one an open bay a...
Fossil Evidence Of Worms Over One Billion Years Old Reported In Science
...lar animals, typically thoughtto have begun with a sudden
explosion during the early Cambrian period, about540 million years ago. The study will be published in the 2 October issue ofScience. Researchers from the University of Tbingen and Yale University, as wellas Jadavpur University in Calcutta, h...
Researchers Link Gene Defects To The Course Of A Deadly Form Of Heart Disease
... forms of heart-rhythm disordersthat can result in sudden
death. Further, the study serves as aharbinger of the future of medicine, when doctors will use theknowledge of a person's genetic makeup to specify a treatment. "Eventually, every discovered gene should be related to improvingthe care of patients, ...
Researchers Identify How AIDS Virus Kills Cells It Doesn't Infect
.... They may also point to new ways of stopping this sudden
decline,which ultimately claims the lives of patie...es over. Scientists never knew what triggered this sudden
turn of events, but the newresearch suggests that certain strains of the AIDS virus that appear in s...
Duke Studies Show That Environmental Effects Of Dams Extend To Insect Life
...ld's second largest reservoir show howdramatically sudden
isolation can change even tiny components of aonce-integrated ecosystem. By painstakingly investigating these small invertebrate species forthree years, two researchers from Duke University's Nicholas School of theEnvironment found that inund...
Open-Air Experiment Shows High CO2 Boosts Tree Growth
... got plants that are starving for CO2,and all of a sudden
they find themselves bathed in air richer in CO2 than theywere getting before, they should have the greatest response right away," saidWilliam Schlesinger, co-director of the Forest-Atmosphere Carbon Transfer andStorage experiment (FACTS-1) now under...
The Touch Of Phytophthora
...be observed under the microscope as a rapid and sudden
collapse of the cell contents around the intracellular fungal structure. Furthermore, the plant cell releases toxic compounds that possibly kill both the plant cell and the fungus. However, in the parsley/P. infestans system, morpholog...
Denatured Proteins Rescued By Trio Of Chaperones
...making them dysfunctional. When exposed to sudden
shifts in temperature, all organisms make heat sho...hat are carried by coldblooded insects survive the sudden
temperature transition as they are injectedinto their warm-blooded hosts," says Glover. Chap...
UNC-CH Researchers Develop Promising Heart Research Tool
...and physicians don't know enough aboutthe cause of sudden
death during heart attacks, researchers at the Uni...ld reduce the death rate from themore than 300,000 sudden
deaths in the United States each year, the researcherssay. "Our new method, which is an exp...
Fungus Suspect In Frog Deaths
... areas of tropical Queensland rainforest. Similar sudden
declines have occurred in protected mountainous rainforest areas in Central and South America. An international team of scientists has been collaborating to solve this problem. The Australians have been working with researchers in the UK and US...
Researchers Discover Existing Drugs May Prevent Enlarged Hearts
...ondition that puts 5 million Americans at risk for sudden
death -- an enlarged heart, orcardiac hypertrophy. In groundbreaking research Dr. Eric Olson, chairman of molecularbiology and oncology, and his colleagues discovered a molecular pathwaythat leads to heart enlargement and have found a way to ...
Molecular Memory Tunes Adrenaline To Stress
ITHACA, N.Y. -- In the rat race of life, a sudden
demand from the boss can trigger an adrenaline surge that quickens your pulse, raises blood pressure, kick-starts anxiety and prepares you for "fight or flight." Now Cornell University neurobiologists, studying the adrenal glands of rats, have di...
Among Wrens, Moms Teach Daughters To Call, Dads Teach Sons, Study Reveals
...as wading through water two feet deep and all of a sudden
therewas a big splash, and I found myself almost surfing," he said. "I had stepped onthe back of a submerged caiman -- an animal that's a lot like an alligator --and scared him. Another time, I looked up from my notes and was shocked to see acougar w...
High Altitudes May Be Harmful To Some Infants
...ways as a result of respiratory infection, develop sudden
or persistent falls in blood oxygen saturation. T...between respiratory infections, airway hypoxia and sudden
infant death syndrome. Contact: Professor David Southall, Professor of Paediatrics, Academic Departm...
Transgenic Mice Created By Researchers May Shed Light On Human Heart Disease
...ase that has been shown to be the leading cause of sudden
death inyoung athletes. Known as hypertrop...protein by mutant genes causes a high incidence of sudden
death, shesaid. "In troponin mutant mice, we can manipulate how much of the proteinthey make...
Family Ties To Sudden Cardiac Arrest; Study Finds Risk Goes Up 50 Percent
...inds that an individual's geneticsusceptibility to sudden
cardiac arrest is not explained just by suchtradit...racteristics. The study was limited to victims of sudden
cardiac arrest whodid not have a prior history of heart disease and whose cardiac arrest was notseco...
New Study Shows Dinosaurs From Gobi Desert Site Killed In Sudden "Sand Slides" Falling From Dunes - Study Also Reports First Dinosaur Tracks From Gobi
...he Gobi Desert'srichest fossil site were killed by sudden
avalanches of water-soaked sandflowing down the si...came drenched with water inheavy rains, triggering sudden
debris flows. In talking to residents of thearea he began to hear intriguing stories. In one insta...
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