Researchers capture snapshots of free molecules by the light of the free electron laser
Hamburg, 28 February 2014. An international team of researchers has used the world’s most powerful X-ray laser to take snapshots of free molecules. The research team headed by Prof. Jochen Küpper of the Hamburg Center for Free-Electron Laser Science (CFEL) choreographed a kind of molecular ballet in the X-ray beam. With this work, the researchers have cleared important hurdles on the way to X-ray images of individual molecules, as they explain in the scientific journal Physical Review Letters. CFEL is a cooperation of DESY, the University of Hamburg, and the Max Planck Society.
Source : Deutsches Elektronen-Synchrotron A Research Centre of the Helmholtz Association
Alex Norman/MEDILL northwestern.edu
New materials are beginning to reinvent power and efficiency in cars, computers and consumer electronics
Changes may be coming that could expand the possibilities of semiconductor manufacturing in the United States, thanks to the discovery of materials that are readily available in the States. Several materials such the compound silicon carbide, a chemical compound of silicon and carbon will be tested for use in semiconductor manufacturing. The compound has been used as a ceramic, an abrasive and even as a component in bulletproof vests
Semiconductors are materials that conduct electricity better than insulators like glass, but worse than conductors like copper. While there are materials that exist with a higher “bandgap” than silicon– meaning they can operate more efficiently at higher voltages, frequencies and heats– they carry a hefty price tag.
“Currently they are expensive,” said Lucy Shi, a Ph.D. and assistant professor of engineering at the University of Illinois at Chicago. “They have a very bright future, but because silicon’s cost is so low it’s not going to be a one-day thing. There has to be major breakthroughs.”
For more, visit the source: http://news.medill.northwestern.edu/chicago/news.aspx?id=227521
Ultrasound recording has shown that by the tenth week of gestation, the majority of fetuses move the right arm more than the left, and from the 15th week most suck the right thumb rather than the left —a strong indicator of later handedness.
Handedness and brain asymmetry are widely regarded as unique to humans, and associated with complementary functions such as a left-brain specialization for language and logic and a right-brain specialization for creativity and intuition. In fact, asymmetries are widespread among animals, and support the gradual evolution of asymmetrical functions such as language and tool use. Handedness and brain asymmetry are inborn and under partial genetic control, although the gene or genes responsible are not well established. Cognitive and emotional difficulties are sometimes associated with departures from the “norm” of right-handedness and left-brain language dominance, more often with the absence of these asymmetries than their reversal.
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The photo depicts the contact lens Google is testing to explore tear glucose. After years of scalding soldering hair-thin wires to miniaturize electronics, Brian Otis, Google X project lead, has burned his fingertips so often that he can no longer feel the tiny chips he made from scratch in Google’s Silicon Valley headquarters. (AP Photo/Google)
Brian Otis gingerly holds what looks like a typical contact lens on his index finger. Look closer. Sandwiched in this lens are two twinkling glitter-specks loaded with tens of thousands of miniaturized transistors. It’s ringed with a hair-thin antenna. Together these remarkable miniature electronics can monitor glucose levels in tears of diabetics and then wirelessly transmit them to a handheld device.
“It doesn’t look like much, but it was a crazy amount of work to get everything so very small,” he said before the project was unveiled.
During years of soldering hair-thin wires to miniaturize electronics, Otis burned his fingertips so often that he can no longer feel the tiny chips he made from scratch in Google’s Silicon Valley headquarters, a small price to pay for what he says is the smallest wireless glucose sensor ever made.
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High-resolution model of six insulin molecules assembled in a hexamer. Created by Isaac Yonemoto
The results of this study have implications for helping both type 1 and type 2 diabetic patients
Source: University of Pennsylvania School of Medicine — Klaus Kaestner PhD, professor of Genetics and postdoctoral Dana Avrahami, PhD, from the Perelman School of Medicine, University of Pennsylvania, published a study this week in the Journal of Clinical Investigation, In which they were able to replicate human pancreatic beta cells – the cells in our body that produce the critical hormone insulin. The newly replicated cells retained features of mature beta cells and showed a physiological response to glucose. Continue reading
TEHRAN (FNA)- An Iranian researcher from Tehran University used multi-scaled modeling and investigated the effects of the non-straight form of carbon nanotubes on nanocomposite properties in the final material.
Europe’s biggest trade fair in the die casting field is scheduled to take place in Nuremberg on January 14 to 16, 2014. The international die casting community will be meeting at Euroguss for the tenth time to exhibit and discover innovative solutions in their specific fields of material forming and processing technology. Henkel too will be represented, showcasing numerous products from its Bonderite and Loctite product portfolio. Continue reading
DNA carries out its activities “diluted” in the cell nucleus. In this state it synthesises proteins and, even though it looks like a messy tangle of thread, in actual fact its structure is governed by precise rules that are important for it to carry out its functions. Biologists have studied DNA by observing it with a variety of techniques, which have only recently been supplemented by research in silico, that is to say, the study of DNA by means of computer simulations. This is a recent area of study, but it has already given a major contribution to knowledge in this field. Angelo Rosa, a theoretical physicist of the International School for Advanced Studies (SISSA) in Trieste, with the collaboration of Christophe Zimmer, an experimental physicist from the Pasteur Institute in Paris has assessed the state of the art of this novel but powerful approach in a systematic review that has just been published in the journal International Review of Cell and Molecular Biology.
The two physicists reviewed 25 years of computational models: “in this relatively short time span the models have become increasingly sophisticated and this, thanks to the development of computers”, explains Rosa. “Today we are able to make far more detailed and predictive simulations, which allow us to lead the work of experimental researchers in previously unthought-of directions”.
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JBC, a manufacturer of tools for soldering and rework operations in electronics, has announced that their C245 range of cartridges has been extended with four new models for soldering SMD or through hole components.
This is positive news for those involved in the electronics rework industry because it could extend tip life by five times.
JBC cartridges offer excellent heat transfer, great durability and instantaneous heating up. By using the sleep & hibernation, tip life lasts up to 5 times longer. For more information, visit http://www.jbctools.com/new-cartridges-with-specific-shapes-make-your-job-easier-news-78.html
Buy JBC products here: http://www.bluethundertechnologies.com/jbc-products/
Researchers successfully glued the two pieces of calf liver together by spreading TM-50 nanosilica solution on each of their surfaces. This discovery is excellent news for those involved in the medical and veterinary fields, specifically in regenerative medicine and surgery.
Researchers have discovered an efficient and easy-to-use method for bonding together gels and biological tissues. A team involving researchers from the Laboratoire Matière Molle et Chimie (CNRS/ESPCI ParisTech) and the Laboratoire Physico-Chimie des Polymères et Milieux Dispersés (CNRS/ UPMC/ESPCI ParisTech), has successfully achieved a very strong adhesion between two gels by spreading a solution containing nanoparticles on their surface. Until now, there was no entirely satisfactory method of obtaining adhesion between two gels or two biological tissues.
Read more: http://www.cemag.us/news/2013/12/revolutionary-nanotechnology-method-gluing-biological-tissues#.UqscpPRDspo