In men chronically exposed to magnetic fields, no disruptions of melatonin exists
...chronic diseases, have regular sleep habits, do no night work, have taken no trans-meridian airplane flights during the preceding two months, and take no drugs. All were nonsmokers who used alcohol and coffee in moderate quantities. The exposed workers had not been on call in the 48 hours preceding the exp...Biological clock more influenced by temperature than light
...imal, put it in a dish, and exposed it to light at night and dark during the day. We asked: does it synchronize to that light-dark schedule? The answer was no." The human biological clock requires the signals from eyes to synchronize to the local light cycle. Taken together, Herzog's findings indicate tha...Science Picksleads, feeds and story seeds (July 2003)
... time, satellite-tracked drifters were released at night to float along with the larvae, and the scientists monitored the drifters' positions on radio frequencies. Reproducible photos are available at http://coralreefs.wr.usgs.gov/press.html (Carolyn Bell, 703-648-4463, cbell@usgs.gov ) Frogs, Fish a...New prospects for treating muscular dystrophy: Stem cells restore muscle in MD mice
...d therapy, but the question that keeps me awake at night is whether this will work in larger animals." Cossu's team conducted its experiments on mice with the same genetic defect that causes one form of MD in humans. If the same stem cells, called "mesoangioblasts," can be collected from human MD patients,...ORNL wins four R&D 100 awards, pushing total to 116
...nd can be used in a number of endeavors, including night vision, industrial process monitoring and medical imaging. It also can help firefighters see through smoke and has particularly important uses in the commercial and military sectors, because infrared radiation is the second-most intense source of rad...Researchers detect receptor for day/night cycles
...t be some other specialized receptor for detecting night and day. We now have evidence that this long sought-after photoreceptor is a layer of cells, located in the inner retina, that contain melanopsin, a pigment chemically related to other opsins [a type of protein] found in the rods and cones of the out...Is there an unexpected price for late night high tech excitement?
... In other words, playing an exciting video game at night with a bright display backlight might just be the ...the number of Japanese using personal computers at night is increasing. A recent report from that nation indicated that 53.7 percent of Internet users in Ja...Vehicle traffic associated with increased carcinogen levels
...e lowest levels were recorded in the middle of the night and the highest levels occurred with the morning rush hour. Larger vehicles with more than two axles, such as buses, motor homes, and tractor trailers, were found to emit 60 times more PAHs, 32 times more 1,3-butadiene and nine times more benzene com...Mosquitoes infected with La Crosse encephalitis found in four Southwest Virginia counties
...hose that carry West Nile virus are most active at night and in twilight conditions. Measures communities and homeowners can take include getting rid of breeding areas, which consist of areas of standing water. Around homes, that can be as simple as tipping the water out of an old tire or changing the wate...Real-time detection of pathogens in the environment: How close are we?
... of brucellosis infection in people include fever, night sweats, undue fatigue, anorexia, headache, and joint pain. It is seldom fatal, but there is no effective human vaccine. Research by Newby and Roberto was recently accepted for publication in Applied and Environmental Microbiology, and will appear in...Scientist helps solve peacock problems
...are big,hungry, fierce, destructive and scream all night long during matingseason -- which in warm areas can last from late January well intofall. Bradley is a UC Cooperative Extension poultry specialist. She's basedat UC Davis but spends most of her time on the road helpingCalifornia ranchers, farmers, ho...Fifty years later, famous photo is in OSU's Pauling collection
...s finally getting its due recognition. On Tuesday night (April 22), the PBS show NOVA debuts "Secret of Photo 51," which outlines the critical role that scientist Rosalind Franklin and her X-ray photo played in the discovery. Franklin's original manuscript - and what appears to be the original "photo 51"...High-speed images show how cells mobilize for immune response
...images resemble the movement of a comet across the night sky. In the study reported in PNAS, Petty used leucocytes as a model for the process. The amino acid sequence is in the region of the gene FcyRIIA. He is currently studying the same phenomena in the eye, where phagocytosis disposes of the regularl...Estrogen patch compared to pill minimizes cardiovascular risk factor in postmenopausal women
...eatment for short-term relief from hot flashes and night sweats, but did not improve quality of life. "A significant proportion of women can't stop taking estrogen because of severe menopausal symptoms," Vongpatanasin said. "If they have to take estrogen, our study shows transdermal, not oral, estrogen ma...Mother-infant bed sharing is associated with an increase in infant heart rate
...mother-infant pair slept the first or "adaptation" night in the sleep laboratory in their routine home condition. Subsequently, pairs spent one night in their routine condition and one night in the other sleeping condition, in random order. The three...Body hormone ghrelin, a food intake and weight gain influence, is found to promote sleep
...cessive nights in the sleep laboratory. The first night allowed adaptation to the laboratory setting. On t...d with the drawn blood samples. Results On the night of ghrelin administration, the time spent in slow-wave or stage IV sleep increased significantly com...'Sleep debts' accrue when nightly sleep totals six hours or fewer
...function well on six or fewer hours of sleep every night may be accumulating a "sleep debt" that cuts into ...ely moderate sleep restriction, if it is sustained night after night, can seriously impair our neurobiological functioning." David F. Dinges, PhD, Professor ...Scientists uncover 'time for bed' molecules
...body clock, which in humans makes us feel tired at night and awake during the day. Secondly there is a tendency for animals deprived of sleep to feel tired and sleep longer following prolonged wakefulness. This is due to a process called sleep homeostasis, which tries to maintain a balance between time spe...A new animal study clarifies how different parts of the brain regulate sleep
...e that was most prominent in the first part of the night and was enhanced by sleep deprivation (SD). In rodents, a six hour sleep deprivation period gave rise to a larger SWA rebound in the frontal derivation than in the occipital derivation. Spindle frequency activity (SFA; power in the 12- to 15-Hz band...Firefly molecule could quickly shed light on how well new drugs work
...ess that makes fireflies glow bright in the summer night can also shed light on how well new medicines work, showing immediately whether the drugs are effective at killing cells or causing other effects. That's the conclusion of a team of scientists from the University of Michigan Health System, who report...