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Tag: "kept" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

...onth-old who refused to go to bed, woke early, and kept crawling out of bed. The childs rocky relationship with sleep often persisted until he or she was 30 months old. A similar effect was found in children born to mothers who were depressed during pregnancy. These prenatal mood disturbances work...

FDA sees nanotech challenges in every product category it regulates

...ufficient resources—which for two decades have not kept pace with inflation—making sure that FDA has the capacity to safely manage nanotechnology must be the shared responsibility of Congress and our political leaders,” argued Rejeski. “The agency must be ‘nano-ready’ for the products on the market today ...

Maggots rid patients of MRSA

...d were the ones with maggots in their wounds: they kept them clean. They remove the dead tissue and bacteria, leaving the healthy tissue to heal. "Still, we were very surprised to see such a good result for MRSA. There is no reason this cannot be applied to many other areas of the body, except perhaps ...

Scientists develope a new model of artificial canine skin

...is cells, which were grown on its surface and were kept in growth conditions exposed to air. The cells proliferated forming the various layers of the epidermis. The model develops a morphological structure similar to that of canine skin. Additionally, the expression of the dermis and epidermis proteins...

Sleepless for science: Flies show link between sleep, immune system in Stanford study

... rhythm. In this case, these mutant flies could be kept under exactly the same light and temperature conditions as the normal flies. They looked at flies that were defective in one of two genes, called "timeless" and "period". They found that the loss of either gene's function made the flies more sensi...

Fused nasal bones helped tyrannosaurids dismember prey

... of the creature's muscle force, says Snively. "We kept the muscle numbers down because we thought they couldn't possibly be that powerful, but Tyrrell museum colleagues showed that a T. rex's lower jaw could apply 200,000 newtons of force—that's like lifting a semi-trailer," he said. "All of the T. rex's...

Rare cell prevents rampant brain activity

...r inhibitory counterparts, the system is generally kept in a state of equilibrium. Just how the brain manages this feat is a puzzle to scientists. Scientists at Karolinska Institutet and the Brain Mind Institute in Switzerland have now discovered a mechanism that might explain how the most common type...

2 brains -- 1 thought

...already well-understood. Has evolutionary pressure kept the structural complexity of such networks to a minimum - or could there have been other networks with an even simpler structure, yet possessing the same dynamics? Is it possible that many more networks fulfilling the same functional and structural c...

Paper challenges 1491 Amazonian population theories

...ransformed by human actions, and ideally should be kept that way, to preserve species biodiversity. "The way to see this is as a sneak peak," he says. "It's a new way to look at landscapes and it's a new tool. The study needs to be replicated in more places before people will be persuaded, but it's cer...

Individual differences in a clock gene predict decline of performance during sleep deprivation

...e possessing only the shorter one coped with being kept awake for two days, including the intervening night. The researchers found that although some participants struggled to stay awake, others experienced no problems with the task. The results were most pronounced during the early hours of the mornin...

Male reindeer inflate a large air sac in the neck region to emit their hoarse rutting calls

...male reindeer emit a hoarse rattling with the head kept low. In this posture the inflated air sac expands the neck region. Both acoustic and optical display serve to deter rival males and thereby prevent fighting, allowing to conserve energy. Simultaneously, the performance serves to attract female mating...

Remote sheep population resists genetic drift

...erations were taken from the mouflon that had been kept as hunted "trophies" in the 1960s, and then scientists arrived in the '70s and began collecting samples themselves. "The Haute Island mouflon have presented us with a rare opportunity," Coltman said. "There may be other natural populations that ma...

Why aren't humans furry? Stone-Age moms could be the answer

... appearance probably influenced whether the mother kept or abandoned it. An attractive baby was more likely to be kept and reared. Harris' theory is that this kind of parental selection may have been an important for...

Iowa State University botanists identify new species of North American bamboo

...re were two distinct species," Clark said. "But we kept hearing about a third plant, called hill cane." And as soon as they saw it, they knew it was different....

Biologists prove critical step in membrane fusion

... Previous research has shown that special proteins kept these vesicles tethered to the egg’s membrane. What about the membranes? What do they look like before vesicle cargo is released? Wessel and his collaborators discovered that the membranes of the egg and the vesicles are hemifused ?a state where t...

Producing medicines in plant seeds

...n's effectiveness, so that a reserve can always be kept on hand. This means that the proteins can be isolated from the seeds at the moment that they are actually needed. With production in leaves, for example - or with conventional production methods - such lengthy storage is not possible: the protein mus...

New research says winning a Nobel Prize adds nearly 2 years to your lifespan

...tween 1901 and 1950 (the full list of nominees are kept secret for 50 years). This gave them 528 male scientists with known biographical details (birth and death dates). They looked at one sex only to avoid differences in life span between sexes. They dropped four from that total who died prematurely for ...

Researchers discover genetic cause for word-finding disease

...inets himself. Another took up sculpturing and one kept up her organic garden. We have patients who do very complicated things even when they can't put two sentences together," Mesulam said. Alzheimer's patients lose interest in their hobbies, family life and just sit doing nothing, he noted. As PPA pro...

Stopping plants from getting sick

...umans and animals. Still, he says he expects to be kept busy studying fungi for a long time ?keeping the sooty black smut and the smell of rotting fish from Canada's wheat fields. ...

UCLA/Toronto researchers unlock key to memory storage in brain

...als in the brain that influence which memories are kept and which are lost. "Earlier studies have linked the CREB protein to keeping memories stable," added Silva, a member of the UCLA Brain Research Institute. "We suspected it also played a key role in channeling memories to brain cells that are re...

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