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15372 |
duddy |
8 years ago |
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2557 |
duddy |
10 years ago |
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All trees, regardless of size, break once this wind speed is reached
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The magic number is 42 m/s (94 mph). Using mathematical data and physical experiments, scientists say they have found the law that governs the resistance of wooden beams under stress. According to the study ( link), researchers hung weights from wooden rods and pieces of pencil lead to record the amount of force needed to snap the cylinder. As one might sense, they found that for a fixed length, increasing the diameter made the rods stronger: They could bend more before breaking. This would make tall skinny trees most vulnerable, but, as the team points out, trees don’t grow taller without getting disproportionately thicker as well. By incorporating established laws of tree allometry - which explain the relationship of tree size parameters ...
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12773 |
duddy |
8 years ago |
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A sense of control can aid recovery
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If emotions can make you sick, if a belief that you will die can kill you (as in voodoo deaths), and if a sugar pill that you believe is a powerful drug can take away your pain, can a belief that you can bring about your own recovery help you to recover?Even with acceptance of the role of emotional factors in both illness and recovery, the assumption has persisted that emotional factors work on an unconscious level, and because of this they are not subject to voluntary control. Most of us still see illness as something that happens to us. Dr. Carl Simonton, chief of radiation at Travis Air Force Base, questioned this assumption. He was impressed by demonstrations that people could learn to control autonomic processes through biofeedback and ...
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2161 |
bio_man |
A year ago |
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A meta-analysis of 40 studies concludes that cinnamon can improve memory and cognitive function
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 A team of researchers at Birjand University of Medical Sciences in Iran recently reviewed several past studies exploring the effects of cinnamon on cognitive functions. Their analysis, outlined in Nutritional Neuroscience, highlights the potential value of cinnamon for preventing or reducing memory or learning impairments. Nakhaee, Kooshki and their colleagues reviewed hundreds of studies stored in several online research databases, including PubMed, Scopus, Google Scholar and Web of Science. They then narrowed down their analysis to 40 of these studies, those that were most pertinent to their topic of interest. Among these 40 studies, 33 were carried out in vivo (i.e., examining real living organisms, such as humans, rodents, or other animal ...
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2636 |
bio_man |
A year ago |
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A human confused as an alien
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This bizarre looking thing is "Ata the humanoid", a mummified corpse found in the Atacama Desert ten years ago. It's strange appearance led to many calling it an "alien", claiming it as proof that extraterrestrials have visited Earth. Well, it's finally been submitted to a battery of tests and the results show it to be fully human. DNA analysis has even managed to pinpoint the location and nationality of its mother. The results do suggest that it was once alive and human, not a hoax, and so asks more questions than they answer. The bone analysis suggests that this is not a fetus, but a child between the ages of 6-8. The specimen has just ten ribs (as opposed to 12), is just six inches long and has severe facial deformities. These symptoms do ...
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4518 |
duddy |
10 years ago |
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8 glasses of water a day might be excessive
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A new study that's challenging the popular idea that we should drink eight glasses of water a day for health purposes shows that a 'swallowing inhibition' is activated by the brain after excess liquid is consumed. This inhibition mechanism helps maintain tightly calibrated volumes of water in the body. The lead scientist has pointed out that if we just do what our body demands us to, we'll probably get it right. In other words, it is the best practice to just drink according to thirst rather than an elaborate schedule. Building on a previous study, the researchers asked participants to rate the amount of effort required to swallow water under two conditions; following exercise when they were thirsty and later after they were persuaded to drin ...
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12197 |
duddy |
7 years ago |
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