Chemical switch triggers critical cell activities
... E1 and forms a thioester bond with E2 instead, E2 falls away from E1 taking NEDD8 with it. Then E2 can int...ng moment when E2 is next to NEDD8, just before it falls off and carries NEDD8 with it. To do that, Schulman's team first had to prevent E2 from binding with...Fires fuel mercury emissions, University of Michigan study finds
...s---collects on foliage. When the foliage dies, it falls to the forest floor and decomposes, and the mercury enters the soil. Because it binds strongly to organic molecules, mercury is most prevalent in the top several inches of soil, where organic matter is concentrated. By comparing the mercury content o...How trees manage water in arid environments
...esources would be to retain more of the water that falls during a heavy rain. To accomplish this, better understanding is needed about how water behaves in the environment. Brown, a micrometeorologist in the Atmospheric Science Program of Indiana University's Department of Geography, is one of the scientis...Climate change has surprising effect on endangered naked carp
...ystem to lake water, the carps' oxygen consumption falls --eventually reaching just 60 percent of that in river fish. Both gill and kidney functions also decline. The sodium/potassium pump (Na+/K+-ATPase), which is a protein critical for cellular function, operated at only 30 percent of its capacity in...Mode of seed dispersal greatly shapes placement of rainforest trees
... from the tree, but new research shows that how it falls might be what is most important in determining tree distribution across a forest. This study of the seed dispersal methods of rainforest trees demonstrates that these methods play a primary role in the organization of plant species in tropical forest...Mixing exploitation and conservation: A recipe for disaster
...rds' diet (as measured by droppings). This finding falls in line with evidence that dredging disturbs the silt cockles like to settle in, as well as their feeding conditions, which in turn reduces their quality as a food resource. Based on prey quality and densities, van Gils et al. predicted the energy...Remote latrine reconfirms the presence of Essene sect at Qumran
...o to Qumran, the figure for people surviving to 40 falls to six percent -- the chances of making to 40 differ by a factor of eight! "And yet we are told that these men arrived very healthy they had physical examinations coming in. The people at Qumran thought that you could look at body types and tell wh......st Interglacial warm period" "Sea level rises and falls have occurred throughout geological history and are all slightly different from one another. However what took place in the last period of global warming 125,000 years ago gives us an idea of what to expect under the current phase," he said. "We sh...Ossur repeats Popular Science 'Best of What's New' award
...ut the future." Ossur's Bionic Technology platform falls right in line with this thinking as it represents a quantum leap forward in lower limb prostheses, and a look at technologies in development reveals osseointegration, the science of implanting man-made, load bearing anchoring mechanisms directly into...Tiny 'housekeeper' crabs help prevent coral death in South Pacific
... the coral, routinely "sweeping" out sediment that falls onto the coral, according to the study. Thus the relationship between the corals and the trapeziid crabs is mutually beneficial, or symbiotic. The little crabs, measuring only a centimeter wide, make their home in branching corals like Acropora or P...Rising ocean temperatures, pollution have oysters in hot water
...ndria's ability to produce energy. Blood oxygen falls In a second experiment, the researchers acclimated two groups of oysters to 20C water. One group was exposed to cadmium. Both groups were then subjected to an acute temperature increase of 4C overnight (to 24C). "Here we saw that the cadmium-exp...Spring in your step helps avert disastrous stumbles, scientists say
... leg modulates itself within 26 milliseconds as it falls into an unexpected void. The lower limbs' spring action helps the birds retain energy and momentum, stabilize their center of mass, and continue forward motion through the hole. Biewener says this work could help create better prosthetic legs and m...Glue made from ethanol-production leftovers may be worth more than the fuel itself
...sive is that it will stick stuff together well but falls apart once it gets wet," Weimer says. While Weimer's bio-based adhesive does have this problem if used as a standalone product, it works well when mixed with another adhesive, a commonly used petroleum-based resin. In some applications the research......kielman said. "A stimulus becomes attractive if it falls into the average of what you've seen and is therefore simple for your brain to process. In our experiments, we show that we can make an arbitrary pattern likeable just by preparing the mind to recognize it quickly." The research follows up on earl...NSF awards $3.3 million grant to Cornell to bolster the percentage of women faculty members
...e university's science and engineering departments falls too far below the level of female doctorates produced nationally, according to Cornell administrators. To correct the current imbalance, Cornell has set ambitious goals: To reach a level of 20 percent women faculty in each science and engineering de...Acorda announces positive Phase 3 Fampridine-SR study in people with multiple sclerosis
...mpridine-SR treatment group vs. the placebo group: falls (15.8 percent vs.15.3 percent), urinary tract infection (13.6 percent vs.13.9 percent), dizziness (8.3 percent vs. 5.6 percent), insomnia (8.3 percent vs. 4.2 percent), fatigue (6.1 percent vs. 2.8 percent), nausea (6.1 percent vs. 4.2 percent), uppe...Ecological change, climate variation addressed at international conference, September 20-24
...n adjacent watercourses through "leaf litter" that falls into the water. Declines in Eastern hemlocks are altering riparian tree community composition in eastern U.S. forests. Scientists predict losses of the trees will result in increases in rhododendron abundance, and an overall decrease in tree species ...Scientists discuss new frontiers in single-molecule research at American Chemical Society
...anometers--in about one minute. "The molecule then falls off the other end of the filament and starts zooming around the cell," Moerner said. In bacteria, MreBs are critical for chromosome replication and maintaining the shape of the cell. They also are closely related to actin, a protein that's essentia......attaching folate to the drug through a linker that falls apart inside the cell. There were several linkers in common use, but with mixed efficiency. In this study we undertook to interrogate the full details of this breakdown process." Yang examined receptor endocytosis, the process by which cells absorb ...