day 2 7

Tag: "day" at biology news

Restaurant seafood prices since 1850s help plot marine harvests through history

...ed. Professional hunters harvested up to 1,000 per day to supply restaurants, says Dr. Jones, fostering the federal government's decision to outlaw the commercial slaughter of migratory birds in 1913. "As supplies dropped and prices rose, some of these species became a status symbol. It seems to confirm...

HIV inserts into human genome using a DNA-associated protein

...s in a patient will have a very short life span, a day or less. "We surmise that this strategy helps the ... that engineered tethering interactions might some day allow control over integration site selection during gene therapy. According to Bushman, this findin...

Chernobyl: The true scale of the accident

...avily exposed to high-level radiation on the first day of the accident; among the more than 200,000 emergency and recovery operation workers exposed during the period from 1986-1987, an estimated 2,200 radiation-caused deaths can be expected during their lifetime. * An estimated five million people ...

Zinc supplements safe for HIV-infected children

...10-mg zinc or placebo tablets to their child every day for six months. The children were seen at the hospital every two weeks for the first month, monthly for five months and, as a final visit, nine months after zinc or placebo supplementation began. At each follow-up visit, parents were asked about illn...

Grabbing addiction by the tail

...s that had been given amphetamine once every other day for 20 days. During this period, the animals displayed stereotypical behavior such as repeated sniffing, licking, and grooming, indicating a craving for the drug. Such behavior parallels the compulsive thought patterns that people addicted to drugs e...

Extinct giant deer's descendant found in UK

... giant deer was renowned for - in size, the modern day deer is comparatively small. The giant deer (or Megaloceros giganteus - meaning gigantic antlers) lived from 400,000 years ago to its extinction 8000 years ago and would have towered over its descendant, reaching a shoulder height of around two met...

Study Holds Promise For New Way To Fight HIV

... giant deer was renowned for - in size, the modern day deer is comparatively small. The giant deer (or Megaloceros giganteus - meaning gigantic antlers) lived from 400,000 years ago to its extinction 8000 years ago and would have towered over its descendant, reaching a shoulder height of around two met...

Student scientists create living bacterial photographs

...tte. For example, he says the techniques could one day be used to build different tissues based on patterns of light or make bacteria that can produce structures useful in medical treatments. The students are already busy on their next innovation--bacteria that can find and create a line around the edge...

Creeping crinoids! Sea lilies crawl to escape predators, new video shows

...w tank and noticed that they changed position from day to day, and Messing had noticed the same thing during dives with a submersible off Jamaica and Grand Cayman Island. Both researchers saw sea lilies using their feathery arms to crawl, dragging their stalks behind them, but the scientists wondered wha...

Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality

...at that less sunny time of year - lasting around a day rather than hours, as in the summer. "Meteorology also plays a role. There is a peak before Christmas: this is not because industrial activity, domestic heating or transportation is suddenly reduced after the holiday season but because there is an e...

Study uncovers placental microtransfusions lead to transmission of AIDS virus during childbirth

...chronic illness and premature death on their first day out of the safety of the womb. "The question has always been how does the virus get from the mothers to the babies?" said principal investigator Dr. Steven Meshnick, professor of epidemiology at the University of North Carolina at Chapel Hill School...

U. of Colorado researcher identifies tracks of swimming dinosaur in Wyoming

...w tank and noticed that they changed position from day to day, and Messing had noticed the same thing during dives with a submersible off Jamaica and Grand Cayman Island. Both researchers saw sea lilies using their feathery arms to crawl, dragging their stalks behind them, but the scientists wondered wha...

Computer models aid understanding of antibody-dependent enhancement in spread of dengue fever

...ntage for the dengue virus. The findings could one day lead to new strategies for developing and deploying vaccines. Using computational models based on epidemic theory, the researchers examined the dynamic role antibody-dependent enhancement plays in the spread of dengue viruses. They concluded that wh...

Scientists discover the molecular switch for nerve cells' insulating jelly rolls

...stem--the brain and spinal cord. If so, it may one day be possible to enhance or fix damaged spinal cords and brain tracts that have lost their myelin due to injury or disease by transplanting into, or turning on, a functioning neuregulin gene in nerve cells. "Is it possible that this same switch can rep...

Gene therapy for muscular dystrophy fixes frail muscle cells in animal model, Stanford study finds

...n promise in skin disease and hemophilia might one day be useful for treating muscular dystrophy, according to a new study by researchers at Stanford University School of Medicine. In the study, scheduled to be published online in the Proceedings of the National Academy of Sciences the week of Jan. 2, t...

MIT researcher finds neuron growth in adult brain

...ature brains. This finding means that it may one day be possible to grow new cells to replace ones damaged by disease or spinal cord injury, such as the one that paralyzed the late actor Christopher Reeve. "Knowing that neurons are able to grow in the adult brain gives us a chance to enhance the proc...

Storing carbon to combat global warming may cause other environmental problems, study suggests

...r makes predictions about the weather for the next day or week, we instead forecast climate given other kinds of scenarios, such as changes in land use," Roy said. Those simulations showed no evidence that such significant land conversions could help generate more rainfall except perhaps in northern Flo...

Bacterial protein mimics host to cripple defenses

...nity. The protein itself or a derivative might one day be applied to control disease in crops or in people. For now, Martin and Abramovitch are working to find which proteins AvrPtoB acts on, and what role those proteins play in host PCD. ...

Envisat radar surveillance protects endangered prehistoric fish

...hese spacecraft can monitor the region during both day and night and in all weathers, including cloudy conditions. The metal corners of ships make good radar reflectors, sending back distinctive signal echoes. Using the two spacecraft together means updated images become available daily, downlinked to a ...

Scientists map one of biology's critical light-sensing structures

...sts to capitalize on the new knowledge and may one day lead to such things as plants whose growth, flower...ant to predict where the light will come from each day and measure the length of daylight so that they flower in the correct season." By deducing the archi...

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