The News Review:
- Examining The Math And Mechanics Behind Life Processes
- Mars lander poised to bake soil then test it
- Small But Super
- Perfect match-up
- How Cell’s Master Transcribing Machine Achieves Near Perfection
- An eventful journey for Science Express
Examining The Math And Mechanics Behind Life Processes
Science Daily – Science Daily (press release) – Jun 6, 2008
Garikipati will present research that suggests there are simple but universal ways that cells exploit forces to control the growth and motion of focal adhesions sticky feet that cells develop to help them attach and navigate. They are believed to help guide the differentiation of stem cells into various types of tissues in an embryo. How mechanics and chemistry work together in embryo formation and growth is a central question of developmental biology says Larry Taber a professor of biomedical engineering at Washington University in St. Taber develops computational models to study the role of mechanical forces in the formation of tissues and organs in embryos. He will present related research at the symposium. "Some people think that the genes turn on in certain ways and cells just obey" Taber said… "Some people think that the genes turn on in certain ways and cells just obey" Taber said. "But the genes aren’t quite that smart. They may start a process but then mechanics and chemistry may take over. "A gene may cause a part of a cell to contract for example. The cells next to it feel that stress and respond to it perhaps contracting too and generating stress that more cells feel. This stress could act as a signal. In embryo development Taber said cells tend to take the shape of an organ such as a heart before they differentiate into the proper type of tissue.
Mars lander poised to bake soil then test it
FOXNews – Jun 6, 2008
After collecting dirt Phoenix will delve into its main job which is to dig into an ice layer believed to lie inches below the soil. Mars is cold and dusty with no sign of liquid water on the surface but some scientists think the underground ice could have melted during a time when the planet was warmer and wetter. ___ On the Net: Phoenix Mars:.
Small But Super
Science News – Jun 6, 2008
At lessthan a nanometer thick the circuits in buckychips would be tens of timesthinner than those in state-of-the-art silicon chips allowing engineers topack more power into a chip. Petek?s buckyballs are not the first superatoms to bediscovered that can behave like single atoms. Sometimes clusters with aparticular number of atoms can even mimic the chemistry of a single atom of adifferent element. The first hints of this surfaced more than two decades ago. Spreading jellium The story of the superatom begins when two physicists walkinto a barber shop. Marvin Cohen of the University of California Berkeleyrecalls how he and a colleague the late Walter Knight ran into each other attheir favorite barber?s one afternoon in 1984. While waiting for his haircut Knight talked about somesurprising data from an experiment in which he had baked a block of sodium andthen measured the masses and thus the sizes of vaporized particles that cameout.
Perfect match-up
Malaysia Star – Jun 6, 2008
They play like a team now. It’s this team effort that leads me to believe they play beautiful ball and that is will take them to glory. Joy: The Celtics have got great chemistry they’re a defensive powerhouse and they are the under-rated underdogs getting ready to attack! This new team marks a renaissance for the Boston Celtics and I really hope they win. It has all the hallmarks of a great team strong chemistry and a well balanced squad. I think we have a good shot even though I think the Lakers are the stronger team skill-wise. But the Celtics have the right work ethic and mental fitness and that will help them with home ground advantage. The players who would make a difference? Drinie: Kobe Bryant of course… It’s this team effort that leads me to believe they play beautiful ball and that is will take them to glory. Joy: The Celtics have got great chemistry they’re a defensive powerhouse and they are the under-rated underdogs getting ready to attack! This new team marks a renaissance for the Boston Celtics and I really hope they win. It has all the hallmarks of a great team strong chemistry and a well balanced squad. I think we have a good shot even though I think the Lakers are the stronger team skill-wise. But the Celtics have the right work ethic and mental fitness and that will help them with home ground advantage. The players who would make a difference? Drinie: Kobe Bryant of course. He’s on top of his game hence he’s this year’s MVP.
How Cell’s Master Transcribing Machine Achieves Near Perfection
Science Daily – Science Daily (press release) – Jun 6, 2008
Importantly said Kashlev the researchers could precisely measure the transcription error rate using a new assay called a retrotransposition assay developed by co-author Jeffrey Strathern. The researchers’ analysis of the effects of E1103G yielded significant insights into the function of the trigger loop said Kashlev. "Normally when an NTP diffuses into the active site of the polymerase the trigger loop closes behind it like a door long enough for the polymerase to perform the chemistry to add the NTP to the end of the RNA chain" he said. "If the NTP is incorrect there is a tendency for this door to stay open for a longer time which means that the NTP has a chance to diffuse out of the active site before the polymerase can proceed to chemistry. "Our mutation occupies a strategic position important for keeping the loop open like a latch" said Kashlev. "So in the mutant the door wants to stay in the closed state for a longer time which means if an incorrect NTP migrates into the active site there is time for the polymerase to add this incorrect NTP to the RNA chain. "Kashlev said the motivation for their studies of Pol II transcription fidelity is to understand the effects of Pol II errors on genome stability.
An eventful journey for Science Express
Hindu – Jun 6, 2008
With its help we have managed to prepare a worldwide communication platform for education and research in Germany. ”The custom-designed train had illustrated and interactive exhibits video clips and large format images in its exhibition coaches. Each of the coaches was based on a scientific theme such as “The Big Bang” “The Architecture of the Brain” and “The World of Chemistry”. A major highlight of the train was the miniature interactive chemistry laboratory with four work stations where students were briefed on experiments their practical application and then given an opportunity to conduct their own experiments. The exhibition also provided counselling sessions mediated through the Triumphant Institute of Management Education that was chosen by the Ministry of Science and Technology. The 14-coach train was flagged off by Prime Minister Manmohan Singh from the Capital last October. Kunal Diwan Printer friendly.