Tag: "per" at biology news
2004 IUCN Red List of Threatened Species reveals 15,589 species at risk of extinction
...ned species have a low Gross National Income (GNI) per
capita (for example, Brazil, Columbia, Cameroon, China, India, Indonesia, Madagascar, and the Philippines) and are unable to implement the required conservation measures without international assistance. Despite the ominous outlook and the many gaps ...
Scientists develop 'electronic eye' for the blind
...gth could be measured to within an error of only 5 per
cent of the full length - which is less than one step. Shioyama and Uddin have now made a breakthrough in detecting the location of crossings in the first place and added this to their original camera. To do this they used a calculation called the "p...
Not finding life? Dig deeper.
... he said. "But when the wind's blowing at 40 miles per
hour, it's a little more complicated." The geoscientists brought their test tubes full of desert soil back to Maier's lab, where her team wetted the soil samples with sterile water, let them sit for 10 days, and then grew bacteria from them....
Flies on crack
...ep/wake cycles in flies. Comprising about 10 cells per
hemisphere, these neurons provide the fly with an internal clock, driving circadian rhythms of behavior even in the absence of light. While Lmo is found throughout the body, it is enriched in the brain. By expressing normal Lmo in over-sensitive muta...
UGA researchers explain recent decline in Georgia's blue crab population
... crab landings in the state was 8.6 million pounds per
year, but at the height of the drought landings fell to 1.8 million pounds. This sharp and sustained reduction in yearly catch drove most of the state's blue crab fishermen out of business and many into bankruptcy. Lee and Frischer discovered that m...
Census of Marine Life - Discoveries and Highlights 2004: Scientists add 4m+ records, 13,000 species
... far in 2004, an average well over two new species per
week, bringing the total of marine fish species to 15,482. CoML experts expect the final count to total roughly 20,000. The database includes more than 6,800 species of zooplankton, animals that drift with the currents. They expect to ...
Purdue researchers align nanotubes to improve artificial joints
...s adhered to the material. Out of 3,000 bone cells per
square centimeter of surface area, about 80 percent specifically stuck to and aligned with the carbon nanotubes - or about twice as many as those that adhered to non-aligned nanotubes in previous work. "So, in a very short period of time, one hour, w...
What colour is that sound?
...Although synesthesia is thought to occur in just 1 per
cent of all adults, in her keynote address at the annual meeting of the American Synesthesia Association November 6, Maurer discussed evidence that all infants are synesthetic. "Toddlers perceive higher pitched sounds to come from white balls and low...
MBL scientists embark on international effort to uncover microbial diversity in world's oceans
...'s oceans, with approximately one million microbes per
milliliter of seawater and one billion bacteria per
gram of sediment, this plan to develop a database on marine microbes linked to genomic and other dat...
Oral saline spray may slash spread of exhaled pathogens
... our subjects exhaled tens of bioaerosol particles per
liter, while the other half exhaled thousands of t...among subjects, ranging from a low of one particle per
liter to a high of more than 10,000." These results led Edwards and his co-authors to conclude t...
Study in Royal Society journal on possible genetic factors in social responsiblity
...ated with 'theta' oscillatory activity (4-8 cycles per
second or Hz). Animal experiments on neocortex, the largest part of cerebral cortex, suggest that networks of a particular type of deep-layer neuron may generate theta oscillations. Here, a realistic computer model was constructed to test this hypoth...
New method to measure ancient land elevation developed by Field Museum scientist
...refore, the higher the elevation, the more stomata per
square inch of leaf surface a plant would need to survive. By simply counting the number of fossil stomata, Dr. McElwain can estimate how much carbon dioxide was in the air when the fossil leaf developed. From that, she can estimate the elevation at ...
Global assessments of biodiversity argue for expansion of protected areas in key regions
...although nominally protected areas now approach 12 per
cent of the Earth's land surface, more needs to be...tected-area system would total at least $4 billion per
year over the next decade, an amount that "far exceeds current spending but is well within the reach...
Science and medicine - bridging the gap
...r years. The smaller grants, beginning at $100,000 per
year, will support modification of existing programs. Innovative new graduate programs that incorporate significant pathobiological and medical knowledge and skills can receive up to $250,000 a year. "We seek creative, innovative and cost-effective ...
Study gives US a 'C' for lagging support of international reproductive health and population efforts
...e, the cost would be less than three pennies a day per
person in the world's wealthiest countries, about what it takes to buy a single movie ticket each year. "Hundreds of millions of women in the developing world still lack access to basic reproductive health care - including family planning and HIV/AID...
Exercise doesn't work for us all
...exercising for 50 minutes three times a week at 75 per
cent of the maximum output they were capable of be...asure of a person's ability to perform work, by 17 per
cent on average. But the most trainable volunteers gained over 40 per
cent, and the least trainable ...
New drug sidesteps Gleevec resistance in human trials
...iven BMS-354825 in doses ranging from 15 to 180 mg per
day taken orally for five to seven days a week for a period of up to nine months. Dosing was fine-tuned for each patient based on detailed studies that examined how well the drug inhibited its target a technique that was devised by Sawyers's group f...
Science to restore the nation's ecosystems
... that water temperatures have increased about 0.5C per
decade since the early 1960s. Water temperature ha... summer temperatures has declined by about 5 miles per
decade. Quantifying the Effect of Dam Removal on Water Temperatures in the Lower Klamath River,...
Idaho lab, Utah company achieve major milestone in hydrogen research
...rs (standard temperature and pressure) of hydrogen per
hour is an initial result, midway through a more than three-year effort by a team of researchers at the INEEL that includes Herring, Carl Stoots, James O'Brien, Will Windes and Paul Lessing. Hydrogen Production Research Secretary of Energy ...
Researchers discover direct link between agricultural runoff and massive algal blooms in the sea
... study. "There were roughly four irrigation events per
year, and right after each one, you'd see a bloom appear within a matter of days." Each bloom was enormous, he said, covering from 19 to 223 square miles (50 to 577 square kilometers) of the Sea of Cortez and lasting several days. "Sometimes eddies a...
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