Geisinger scientist seeks cure for Lou Gehrig's disease, creating device to find treatment
...ys. The Bucknell students worked throughout the spring semester to improve on their design. In their first three years, Bucknell biomedical engineering students compile an excellent set of technical and design skills through a number of open-ended experiences, Tranquillo says. But they truly become en...Hepatitis C helicase unwinds DNA in a spring-loaded, 3-step process
...ward Hughes Medical Institute. You are loading the spring with small mechanical movements until finally you have accumulated enough tension on the DNA-protein complex to cause the rapid unwinding of three base pairs. Such reactions are energetically intensive, requiring the input of adenosine triphosphat...Bumblebees make bee line for gardens, National Bumblebee Nest Survey finds
... nectar and pollen sources for the bees throughout spring and summer at a density rarely encountered in the countryside. Bumblebees' penchant for nesting in linear habitats in the countryside is less easy to explain. It could simply be because bees are confined to these habitats in heavily cultivated area...Bull's-eye -- Programs targeting math, science teacher shortage may get boost
... in their college careers, teachHOUSTON began this spring with 14 students. With teachHOUSTON, students ...the students completed five assignments during the spring semester in that teachers classroom. Next fall, students will be assigned a mentor in a middle scho...Loss of hemlocks will affect water dynamics in southern Appalachian forests
...forest transpiration by 10 percent, and winter and spring transpiration by 30 percent. We expect this will increase soil moisture and alter both the amount and timing of stream flow. The duration of these changes will depend on how other vegetation responds to the loss of hemlock. ...It don't mean a thing if it ain't got that (modern) swing
...e-deep snow in Tioga Pass, Calif., during the 2005 spring mating season to place a speaker in the center of 20 males' territories and then gauged how close each one approached the recorded trespasser. The 1979 intruder didn't inspire the level of machismo in these males that the 2003 intruder did. Derryb...Early fire risk for mountains near Los Angeles
...the Santa Monica Mountains, based on the amount of spring precipitation, says the studys principal author, P...ure falls to 71 percent on July 8 in years with no spring precipitation. They predicted that for each inch of spring rain, that moisture level will be reached...Arctic spring comes weeks earlier than a decade ago
...icy far north, the harsh winters are giving way to spring weeks earlier than they did just a decade ago, res...logy, the study of the timing of familiar signs of spring seen in plants, butterflies, birds, and other species. Shifts in phenology are considered one of the...Study helps preserve Arctic whale, Eskimo subsistence hunt
...kimos as they migrated past Barrow, Alaska, in the spring and fall, researchers did detect an unexpected level of genetic variation but speculate it stems from the whale's unusual age structure, as opposed to unique subpopulations. Bickham said he suspects the high commercial-whaling mortality rates of the ...Reprogrammed fibroblasts identical to embryonic stem cells
...nog switched on, the drug-resistant DNA would also spring into action. The researchers then added neomycin to the cells. Only those fully reprogrammed cells with an active Oct4 and Nanog survived. Next, the team ran these cells through a battery of tests, seeing if they could discover any substantial di...Stanford researchers find stem cells in colorectal tumors
...w colorectal tumors. These stem cells act like a spring at the source of a creek, constantly dividing to produce new tumor cells. Although the other tumor cells can divide and cause damage through their sheer bulk, they are shorter lived and can't maintain the tumor's growth. The cancer stem cells are als...Research identifies protein that signals flowering in squash plants
... (and days are long), and typically flower in late spring or early summer. SD crops include rice and maize, and LD crops include wheat, barley, oats and peas. Day-neutral plants will flower under either long or short days. In addition to its fundamental importance in basic plant biology, understanding and m...Existence of muscle-building stem cells points to regenerative therapies for muscular disease
... after birth. The normally quiet restorative cells spring into action in response to the stress of weight-bearing or trauma. Yet much about the mechanisms controlling satellite cells identity and development had remained uncertain, Rudnicki said. Earlier studies had even suggested that satellite cells mig...UGA study reveals function of ubiquitous yet poorly understood microorganisms
... with a group of microorganisms that thrive in hot spring environments that are thought to resemble early conditions on Earth, Zhang said they may help scientists better understand the earliest stages of evolution on the planet. "If we want to know how organisms evolved and how their metabolism evolved, w...Fibers are center stage at international conference
... of Materials Science and Engineering, host of the spring conference, has expanded into different high-tech niche areas of the fiber market. Expertise now extends to fiber-reinforced composite materials based on metals, ceramics and polymers for high performance and light weight, with uses in automotive, sp...UC engineering researchers uncover factors that control ion motion in solid electrolytes
...xibility of glassy networks," to be published this spring in Physical Review Letters. "We find that when networks become flexible their electrical conductivity increases precipitously," says Deassy Novita. "Now we will be able to chemically tune these materials for specific applications. For example, the ...Cooperative science program yields results
...lions. While cod fishing is best in the winter and spring when the fish are tightly schooled, part of their season was shifted to the fall so it would not interfere with sea lion feeding. In the fall, however, the cod are dispersed, resulting in longer tows and increased bycatch of halibut. Although the o...Urbanization favors sedentary males
...and more nocturnal activity, during periods in the spring and fall. While they found little difference between forest and urban females, urban males were less likely to show a desire to migrate (migratory disposition). Furthermore, those individuals with a lower migratory disposition were more likely to dev...Researchers making significant strides against diabetic retinopathy
...ms of the disorder. An in-depth article in the spring 2007 edition of Countdown, the quarterly journal of the Juvenile Diabetes Research Foundation, details ongoing human clinical trials in this area, and important findings that have been made to date. In the article, JDRF-funded scientists share valua......ators. Later arrival of autumn snows, and earlier spring melts, could subject lemmings to longer periods of sub-freezing temperatures. Also, the tundra is experiencing unusual warm periods in winter, including freezing rain and episodes of thawing and freezing, which can coat much of the lemmings' foods (s...