Tag: "upper" at biology news
Facial attraction -- choice of sexual partner shaped the human face
... men have evolved short faces between the brow and upper
lip, which exaggerates the size of their jaw, the ...he region between the mouth and eyebrows, known as upper
facial height, develops differently in men and women. Unlike other facial features, however, this di...
Rain forest protection works in Peru
...etection system, which can penetrate the shielding upper
layers of forest leaves to see consequences of logging activities below. The CLAS system can uncover forest changes at a resolution of less than 100 by 100 ft. The core process behind CLAS is an advanced signal processing approach developed by study ...
Reading a face is tricky business
...les that raise the inner brow, the outer brow, the upper
lid, plus stretching the lips, parting the lips and dropping the jaw. The ability to detect microexpressions may allow an observer to be more empathetic and sense someones true intentions or motivation, said Paller. Valuable as this ability may b...
MIT team building robotic fin for submarines
...ep of the fins and the simultaneous cupping of the upper
and lower edges of the fin. When an electric cur...e researchers can make the fin curl forward at the upper
and lower edges, but it has been a challenge to make the fin sweep and curl at the same time. Strate...
Is nutrient loading a smaller problem than we think?
... recent decades on nutrient control. Especially if upper
trophic levels have been altered, nutrient reduction is unlikely to help restore benthic habitats, note the authors....
Throwing motion in young baseball players may actually protect shoulder
...und that the act of throwing causes changes in the upper
arm bone and soft tissue in the shoulders of young baseball players. This is not necessarily a bad thing, explains Dr. Mair. It can help protect players from injury. However, pitch counts that are too high and playing year-round can push those ada...
Illinois-based study of energy crops finds miscanthus more productive than switchgrass
...h team measured the amount of gas exchanged on the upper
canopy of Miscanthus leaves from pre-dawn to post-dusk on 20 dates in the 2005 and 2006 growing seasons. The averages from two years data showed that Miscanthus gained 33% more carbon than switchgrass. Integrated measurements also showed that the M...
Weeds survive the wild better than natives
...for the weed. "Essentially it may give weeds the upper
hand over native plants," she said. "What I wanted to see was the herbivores eating the weeds, but this was not the case. "Herbivores demonstrated a preference for the native plant, causing higher levels of damage to the foliage of the native bot...
Tick-related disease thrives on cholesterol, study suggests
...pread Lyme disease, and are found primarily in the upper
Midwest, New England, parts of the mid-Atlantic States and northern California. The disease attacks immune cells called granulocytes, which the body normally uses to destroy infectious pathogens. In the current study, Rikihisa and her colleagues ...
American Chemical Society's Weekly PressPac -- June 20, 2007
...ling of plastics Wine may combat tooth decay and upper
respiratory tract disease bacteria New study sup...EDIATE RELEASE Wine may combat tooth decay and upper
respiratory tract disease bacteria Journal of Agricultural and Food Chemistry Both red and whit...
World's first X-ray free electron laser is on course to completion
...nteracts the very high magnetic forces between the upper
and lower magnetic arrays, and is critical in determining the thermal and mechanical stability of the undulator. Precision and stability requirements for the LCLS devices far exceed those for existing undulators at the Advanced Photon Source and othe...
Gum disease in postmenopausal women linked to oral bone loss
...surrounds the teeth and holds them in place in the upper
and lower jaw. The lower the crest, or top of the bone, the more bone has been lost. Loss of alveolar crest bone eventually can lead to tooth loss. The association between bacterial infection and oral bone loss turned out to be strongest in overw...
News tips from the Journal of Neuroscience
...somatosensory cortex. Compared with neurons in the upper
layers, layer 5/6 neurons were consistently more depolarized and fired spontaneously between seizures. Their activity during seizures preceded firing in other cortical and thalamic areas, thus constituting a bona fide seizure focus....
Research finds evidence tropical cyclones have climate-control role
...ocean conveyer belt and its impact on climate. The upper
part of the conveyer belt travels from the south t...ations, or internal waves that cause mixing in the upper
layer of the ocean," Huber said. "It is like putting sugar in a cup of coffee. The sweetened coffee ...
Pointing a finger at the source of fecal bacteria
...iment samples at the main study site located in an upper
reach of the creek. While the two methods led to similar overall interpretations, using both methods together gave us a clearer picture of potential sources and the strengths and weaknesses of the methods used, said USGS Hydrologist Jason Vogel, le...
Sleep apnea increases risk of diabetes and hypertension in pregnant women
...ced hypertension. In obstructive sleep apnea, the upper
airway narrows, or collapses, during sleep. Periods of apnea end with a brief partial arousal that may disrupt sleep hundreds of times a night. Obesity is a major risk factor for sleep apnea. The most effective treatment for sleep apnea is an appara...
Colorado River streamflow history reveals megadrought before 1490
...-by-year natural variability of streamflows in the upper
Colorado River basin back to A. D. 762, said the t...he work extends the continuous tree-ring record of upper
Colorado streamflows back seven centuries earlier than previous reconstructions. "The biggest drou...
Dinosaur hearing, listening to muscle noise, quieter cubicles
...t below 3 kHz. For comparison, this is around the upper
frequency limit of a conventional telephone; humans speak at frequencies as high as 8 kHz and can hear up to about 20 kHz (2aAB2). Other papers in session 2aAB will explore how the middle ear of mammals evolved as they made the transition from water ...
Testosterone may help men with multiple sclerosis
...l containing 100 milligrams of testosterone to his upper
arms once daily for 12 months. "After a year we saw an improvement in cognitive performance and a slowing of brain deterioration, said Voskuhl. During the first nine months of the study, the mens symptoms were simply monitored, then followed by jus...
Slowing the racing heart
...t" reaction to adrenaline. A single cell in the upper
right chamber is responsible for setting the pace of the beating heart, triggering its neighbor cells to beat. In the human heart, one cell -- the pacemaker cell -- beats faster or slower to induce a rhythmic heartbeat that varies to increase or decr...
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