Trial shows which brain cancer patients benefit from temozolomide
...A in these rogue cancer cells is being repaired as fast as the drug causes damage. This means the cancer cells are able to survive the drug's onslaught," said Dr. Hegi, who is also project leader at the national Centre of Competence in Research Molecular Oncology at ISREC in Epalinges, Switzerland. ...New Arizona State center brings science to policy on issues of water resources and urban growth
...n system to water their crops. Today, Phoenix is a fast growing urban complex that provides a uniquely tailored area in which to study the dynamics of population growth and limited water resources. "Accessing, distributing and managing water resources has always been a challenge in Phoenix...Cardiac arrest may hinder ability to learn certain tasks
...k each mouse to reach the platform, as well as how fast and how many meters the animal swam during its search. By the end of this training phase, each mouse had learned where the platform was and could swim to it directly regardless of where the mouse was placed in the tank. All of the mice we...Study: Emission of smog ingredients from trees is increasing rapidly
...s of VOCs. Indeed, virtually every tree that grows fast -- a desirable quality for forestry production -- is a heavy emitter of VOCs. "It's just one of those biological correlations," said Purves. "What you want is a fast-growing tree that doesn't produce a lot of VOCs, but that doesn't seem to exist." Th...A test case for DNA barcodes to identify species
...tinction since the dinosaurs died," the need for a fast and easy way to identify species has never been greater. With too few specialists to do the job, biologists are looking for high-throughput tools that can rapidly and accurately identify individuals from known species and from an entirely new species...Peering inside the body, with a new spinliterally
...re structural detail they obtained. "This was very fast spinning, an ultra-centrifuge, thousands of rotati...lswould be necessary to see how strong a field and fast a spin they couldstand. He admitted that patients might balk at being spun and believesengineers can...Extreme stretch-growth of axons
...ms to explain this: increasing transport to a very fast rate or making the necessary proteins at the site, proximal to the growing axons. Smith believes that this form of growth commonly occurs in nature. "For example, it can be inferred that axons in a blue whale's spine grow more than three centimeters ...Engineering endurance: The future of the Olympics?
...sic types: type I, or slow twitch, and type II, or fast twitch. Slow-twitch fibers rely on oxidative (aerobic) metabolism and have abundant mitochondria that generate the long-lasting supplies of ATP, needed for long distance. Fast-twitch fibers, which produce ATP through anaerobic glycolysis, generate ra......ther clock that cannot keep good time and runs too fast because it has a faulty spring balance. "What we are showing is that circadian clocks are composed of interlocking feedback loops," says Kay. The overlapping feedback, says Kay, is probably there for a number of reasons. It makes the clock more robu......ple all at once. The entire procedure is extremely fast - detailed images can be acquired in minutes. To further improve the resolution and to correct for distortions that depend on the viewing direction, the sample can be rotated and scanned again. As a result of EMBL physicist Jim Swoger's work on image...Growing pains: T. Rex was teenage giant
... than 30 years. "We now know that T. rex lived fast and died young," said Erickson. Erickson and Peter Makovicky, dinosaur curator at The Field Museum and a coauthor of the study, will join with other team members at the Chicago museum on Wednesday to announce their findings. The museum is ...Bad news for pathogenic bacteria: Scientists find protein essential for bacterial survival
... at last determine just how DksA helped ppGpp hold fast to its target, RNA polymerase. DksA uses something scientists call the "backdoor of gene expression," a cavity on the RNA polymerase molecule called the secondary channel. DksA squeezes through this narrow tunnel toward the site where ppGpp binds t...UC Riverside researcher takes snapshots of the movement of molecules in a billionth of a second
...artels has developed a technique to take extremely fast snapshots of molecular and atomic movement. The de...le's findings offer a new way of studying the very fast movement of carbon monoxide on surfaces. ...Study: A little help from friends makes wounds heal faster
...lts showed that skin wounds healed nearly twice as fast in the hamsters paired with a sibling. These animals also produced less of the stress hormone cortisol than unpaired hamsters. "Stress delays wound healing in humans and other animals, and social contact helps counteract this delay," said Courtney...Huge market for forest moss raises concerns
...ers would know more about their moss resource, how fast it regrows, what amount could be safely removed, and which sensitive habitats should be avoided. Harvesters would be trained, maybe even have a long-term lease on a parcel of forest land, and there would be some degree of enforcement of rules and per...Duke study disputes idea that trees can 'relocate' quickly in response to climate change
...idence, it suggests that maybe they didn't move as fast as we previously thought," said James Clark, H.L. ...ts that some species might not be able to relocate fast enough to adjust to rapid climate change, Clark said....Study finds anti-HIV protein evolved millions of years before the emergence of AIDS
...ng Glass" that refers to the paradox of running as fast as you can just to stay in place. When comparing human Apobec3G genes with those of man's distantly related primate relatives, Malik and colleagues found, to their surprise, that the protein began to evolve in response to such Darwinistic pressure mo...Save the rainforest - eat a tree
.... Every two months Fine and Mesones determined how fast each tree was growing by measuring its average leaf area and the height to its meristem the part of the tree where new branches and leaves emerge. They also counted how many seedlings died. ...Fluid derived from aloe plant prolongs life after hemorrhagic shock in animal study
...tical way to replace the necessary amount of blood fast enough on the front lines. When this happens, there is inadequate perfusion of the organs which quickly leads to a cascade of life-threatening events," said senior author Mitchell P. Fink, M.D., professor and chair, department of critical care medici...Canadian Society of Agronomy partners with Plant Management Network
..."CSA's new partnership with PMN allows CSA members fast access to applied crop and plant information from highly respected sources at a discounted rate," said CSA Executive Director Steve Sheppard. As a PMN partner, CSA joins some of the most respected organizations in the crop and plant science communi...