Circadian clock controls plant growth hormone
... a natural rhythm of activity, peaking late in the night when water is most available and the plants are preparing for daylight. A circadian response to auxin was actually observed in 1937 but then forgotten for 70 years, Harmer said. The researchers hope to understand exactly why having a functional int...UF, French scientists seek test to detect gene doping in athletes
...entists say the two procedures are as different as night and day from a therapeutic standpoint. When you use the phrase gene therapy it should be very clear that youre talking about therapy, Friedmann emphasized. But the same process of transferring genes would also be relevant in sport doping settings...Why nectar-feeding bats need a 'power drink' to fly
...ving mammals, weighing less than 10g. They feed at night and can ingest up to 150% of their body weight as nectar. ...Chronically sleep deprived? You can't make up for lost sleep
...Weve all experienced that occasional all-too-short night of sleep -- staying out too late at a party on a w...urs for a morning exam or being kept up during the night with a sick child. Our bodies try to catch up by making us sleep more and/or more deeply the followi...Fruit bats are not 'blind as a bat'
...and colour vision, and the more sensitive rods for night vision. Nocturnal bats were traditionally believed... good sense of vision, because when they forage at night for nectar and fruit, they orient by vision and the sense of smell. During the flights to the foragi...Sleep deprivation affects airport baggage screeners' ability to detect rare targets
...ts get between seven and eight hours of sleep each night to maintain good health and optimum performance. Persons who think they might be suffering from a sleep disorder are encouraged to consult with their primary care physician, who will refer them to a sleep specialist....In a night sky filled with hungry bats, good-tasting moths increase their chances of survival by mimicking the sounds of their bad-tasting cousins, according to a new Wake Forest University study. Published in the May 29 issue of the Proceedings of the Nation...Sleep apnea increases risk of diabetes and hypertension in pregnant women
...petitive decrease in oxygen that occurs during the night in someone with sleep apnea heightens the bodys fight or flight state, which can raise blood pressure, explains researcher Hatim Youssef, D.O. of UMDNJ-Robert Wood Johnson Medical School. The body also secretes more hormones such as cortisol and epin...Jet lag: It's all about chemical reactions in cells
...s in cells respond to differences in light between night and day and thereby allow organisms to anticipate ...he clocks are responsible for why we get sleepy at night and wake in the morning, and they control many major regulatory functions. Disruptions of circadian ...Dinosaur hearing, listening to muscle noise, quieter cubicles
...hese results suggest that more feeding occurred at night when it is not possible to observe them visually. This acoustic information is a valuable supplement to traditional visual observations, and is shedding new light on the behavior of this still-mysterious class of killer whales. (3aAB4) THE SOUNDSC...Case Western Reserve University School of Medicine researchers awarded $27M for TB research
...r a period of months, begins with a chronic cough, night sweats, loss of weight and a characteristic cavity (i.e. hole) in the lung found on chest x-ray. Left untreated, TB is fatal. Mycobacterium tuberculosis, the causative bacterium, is spread person-to-person by droplets expelled from the lungs by cou...Light sticks may lure turtles to fishing lines
... sticks, whether in total darkness or underneath a night sky, Wang said. When the lights werent activated, they were unappealing. The experiments were conducted at the National Marine Fisheries Services Galveston Laboratory in Texas and at a turtle nesting area in south Florida. The study needs to be rep...Urbanization favors sedentary males
...st environments. They monitored their movements at night and during the day and measured body fat, an indicator that the bird is preparing for migration. The researchers also looked at sexual maturity, to see if migratory disposition had an impact on the seasonal timing of reproduction. Partecke and Gwi...A cherry on top: Tart cherries may alter heart/diabetes factors
...y will enroll healthy individuals who will spend a night at the U-M General Clinical Research Center, and have their blood tested multiple times to look for the breakdown products of cherries. ...A steady, high-fat diet is bad, but the news gets worse
... In the study, 30 healthy young adults fasted the night before, then consumed either a high- or low-fat breakfast. Both meals had the same number of calories and the low-fat breakfast included supplements to balance it for sodium and potassium. Two hours later the two groups were subjected to standard ...Highlights from the April 2007 Journal of the American Dietetic Association
... often fruits and vegetables were served. "Each night the family ate dinner together was positively asso... "Serving fruits or vegetables decreased with each night the television was on during dinner." Other findings include: Hispanic and black parents report...Male owls pitch their hoots to advertise body weight to competitors
...e fact that owls are essentially active during the night puts a strong emphasis on acoustic communication as a means of assessment, both during male competition and during mate choice," says Loc Hardouin who recently completed a PhD on acoustic communication and territoriality in owls. "The next step is to......eet food, after having overindulged in alcohol the night before. It appears that Egyptian fruit bats also crave particular types of sugar to reduce the effects of ethanol toxicity. Francisco Sanchez from the Ben-Gurion University of the Negev (Israel) will present data demonstrating this on Sunday 1st of A......irst time, that giant Australian cuttlefish employ night camouflage to adapt quickly to a variety of microh... known that some marine fish and invertebrates use night camouflage as an anti-predator tactic, most camouflage studies are based on observations taken durin...Plants' management of nutrient suggests environmental remedies
...unts of the nutrient coming in during each day and night cycle. "The sensors try to detect how much calcium is there, and they coordinate that level with growth and development," Pei said. "If they detect there is not enough calcium, the plant may elect to hold off on growth and development until it has ...