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Tag: "perceived" at biology news

Male circumcision overstated as prevention tool against AIDS

...ory, violate the individual’s human rights and are perceived as an attack on female prostitutes who are viewed as victims of gender and income inequality. Such organizations do not properly weigh the loss of human rights and life itself that this virus, unleashed on a community, is causing. This virus, itself,...

Mule deer moms rescue other fawns

...layed, twisting and turning as they confronted the perceived attackers. Whitetail mothers that came close to the speaker tended to withdraw right away and then stayed safely outside that distance. The behaviour of mule deer defies traditional explanations that parental care, kin selection or reciprocity pla...

Bats get the munchies too!

...icity for Egyptian fruit bats, the bats themselves perceived both fructose and sucrose as being beneficial. “We think that this observation may be due to a matter of taste or flavour? explains researcher Francisco Sanchez, “The perception of sweetness versus bitterness may vary according the type of sugar and ...

Grape expectations for healthier wine

...ress in plant cells, it could be that the ozone is perceived as a biochemical insult. Andrew Waterhouse, Chair of the Department of Viticulture at University of California, Davis, said that because wine growers don't store grapes for prolonged periods, they are unlikely to use ozone in any preservation proc...

Is there a pilot in the insect?

...tics models to test biological principles that are perceived only vaguely at the outset. These hidden forces underlying animal behavior can then be understood more exactly by permanently shuttling between biology and robotics. These principles have been tried and tested for millions of years, and today the...

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

... it has been difficult up till now to separate any perceived positive effect of "status" from the effect of simple greater wealth that status often brings. Nobel Prize winners were viewed as an ideal group to study as the winners could be seen as having their status suddenly dropped on them. They also come wit...

Scientists unlock secret of what makes plants flower

...th. Earlier research had shown that plants' leaves perceived seasonal changes in day length, which triggers a long-distance signal to travel through the plant's vascular system from the leaf to the shoot apex, where flowering is induced. However, the identity of the long-distance signal remained unclear. Th...

Power emerges from consensus in monkey social networks

... Krakauer. "In such cases, only individuals widely perceived as powerful will be able to terminate or reduce the severity of these conflicts. Power structure is critical to conflict management, which is in turn critical to social cohesion." ...

Edible coatings will be the packaging of the future

..., transparent, has good adhesion and is not easily perceived by the naked eye. The future of packaging Currently, the three systems of conservation most used by the food industry are vacuum packing, nitrogen sweeping and aluminium foil. The Pamplona research chemist holds that WPI films are the packaging...

Road-crossing in chimpanzees: A risky business

...ility of responses by chimpanzees to variations in perceived risk. Understanding how chimpanzees cross roads as a group would help shape our hypotheses about the emergence of hominoid social organization. Progression order--the order in which individuals travel within a group--was studied in the small commu...

Pattern of human Ebola outbreaks linked to wildlife and climate

... intermediate between these two views. There is a perceived pattern to the way the virus spreads, but it is not simply a wave affecting everything in its path, since apparently healthy mammal communities thrived in close proximity to Ebola epidemic sites." Lahm has been a research associate at the Instit...

Results with newer bladeless LASIK equivalent to standard microkeratome LASIK

...first three months after surgery, yet the patients perceived no difference in vision after three months between their eyes treated with bladeless or microkeratome LASIK. Backscatter is haziness in the cornea that is usually invisible to the naked eye and is identified through testing in a physician's office. C...

No-mow grass may be coming to your yard soon

... access to the nucleus. Rather, plant steroids are perceived outside the cell by the extracellular domain of a cell surface receptor. Perception then regulates genetic events in the nucleus in a more roundabout way, similar to a well-studied pathway in animals known as the Wnt signaling pathway. Wnt is a secre...

Brain's 'gambling circuitry' identified

...at increased with the level of expected reward and perceived risk. The researchers found that the activation related to expected reward was immediate, while the activation related to risk was delayed. These regions were part of the brain circuitry governed by the neurotransmitter dopamine that is also involv...

Genes discovered that allow gum disease bacterium to invade arteries

...ial cells, offering one possible explanation for a perceived connection between gum disease and heart disease. Scientists from the University of Florida, Gainesville, present their findings today at the 106th General Meeting of the American Society for Microbiology in Orlando, Florida. "Aside from lifestyle...

Mosquito spray increases toxicity of pyrethroids in creek, study finds

...uman health risk from mosquito-borne infections is perceived to be greater than the risk of exposure to the pesticide. In this case, the decision to spray by air came after two dozen people in Sacramento County had become infected that summer by the West Nile virus. An 85-square mile region north of the Amer...

Confidence in memory performance helps older adults remember

...ruit and flowers. Middle-aged and older adults who perceived greater control over cognitive functioning were more likely to categorize the words and had better recall performance, Lachman notes. "It's no surprise that age-related losses or lapses in memory can challenge our deeply embedded sense of control," ...

High-resolution light microscope reveals the fundamental mechanisms of nerve communication

...hen viewed through the optical microscope they are perceived as a blurred, single entity. Abbe's realization of the resolution limitation of the optical microscope was long thought to be a unalterable law of far-fieldlight imaging. Achieving higher resolution required the use of an electron microscope. Despit...

Penguins waddle but they don't fall down, UH researchers say

... speculate that this may be rooted in the animals' perceived vulnerability, lack of threat and soft physiques. For UH researcher Kurz, his subjects' funny, cuddly nature is just an incidental advantage. His current research will provide a springboard for future studies on the unique locomotive strategies of...

Weizmann Institute suggests that immune cells help to maintain cognition and brain cell renewal

...e immune system is denied entry as its activity is perceived as a possible threat to the complex and dynamic ne...n the healthy individual, their presence there was perceived as an outcome of the body's failure to eliminate them. But Schwartz's group showed that these autoi...

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