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Organ Transparency Chemical

Organ Transparency Chemical
SExpand Who needs an invisibility cloak when you can be transparent? Researchers in Japan recently developed a chemical reagent that turns biological tissue transparent, opening doors to optical imaging techniques and avenues of research that scientists have long only dreamed of. And speaking of dreaming — if you're going to start turning body parts transparent, where better to start than the brain? What if you could dissect an organism without so much as picking up a scalpel? For years, researchers have used animals like zebrafish — which are naturally transparent at the embryological stage of development, and were recently genetically engineered to remain transparent through adulthood — to do just that.

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Chinese Physicists Build "Ghost" Cloaking Device Illusion cloaks that make one object look like another are a fascinating type of invisibility device. The general idea is that such a device would make an apple look like a banana or a fighter plane look like an airliner. Clearly this would have important applications. But while materials scientists have made great strides in building ordinary invisibility cloaks that work in the microwave, infrared and optical parts of the spectrum, making illusion cloaks is much harder. That’s because the bespoke materials they rely on require manufacturing techniques that seem like a distant dream. Today, Tie Jun Cui and buddies at Southeast University in Nanjing, China, say they’ve designed and built a practical alternative to illusion cloaks, which they call a “ghost cloak”.

Life-like cells are made of metal - life - 14 September 2011 Video: See how life-like cells can be made from metal Could living things that evolved from metals be clunking about somewhere in the universe? Perhaps. In a lab in Glasgow, UK, one man is intent on proving that metal-based life is possible. He has managed to build cell-like bubbles from giant metal-containing molecules and has given them some life-like properties. Meat without slaughter: '6 months' to bio-sausages - science-in-society - 31 August 2011 Editorial: "Credible or inedible?" Who needs whole animals when you can grow burgers and sausages from their cells alone, in the lab - and do your bit for the environment too FIRST we hunted animals for their meat. Then we developed ways to raise them on farms. Freaky Fractal Fingers, Fingers, Fingers In his 1941 novel Methuselah's Children, science fiction author Robert Heinlein writes about a human baby modified by an alien race. The baby was given the following "improvements" (among others): "'s body architecture has been redesigned for greater efficiency, our useless simian hangovers have been left out, and its organs have been rearranged in a more sensible fashion. You can't say it's not human, for it is... an improved model.

Light-Activated Muscle Could Make Robots Move Like Real Creatures New generations of bio-inspired robots will be more than just inspired by nature — they may use actual biological components. Bioengineers at MIT have genetically modified muscle cells to respond to light, which could be used to make easily controllable robot muscles that look and act like the animals on which they're based. This is the first time tough, powerful skeletal muscle has been modified to react to light. Optogenetics researchers have done it with cardiac cells, which are already primed to beat on their own — now skeletal muscle, which normally requires some outside stimulus, can contract and expand at the command of light bursts. Harry Asada, an engineering professor at MIT, said it's more effective and less bulky than stimulating muscle with electrodes, especially for a robotics system where light weight and mobility are key. Optogenetics entails introducing new genes into cells that make them react to a pulse of light, usually short bursts of laser light.

A New Kind of Invisibility Cloak Demonstrates Better Cloaking Efficiency Top: Color online) Snap-shots of Hz distributions for fwork=8 GHz at TM wave incidence on: (a) bare metallic cylinder with the radius 0.75 λwork; (b) the same target cloaked by the shell with material parameters prescribed by Eq. (7); (c) the same target cloaked by the multi-layer dielectric shell; (d) zoomed-in view of (c).Bottom: (Color online) The TSCW spectra obtained by integrating the simulated far-fields for the cloaked and bare targets of two different sizes. Dimensional parameters of the multi-layer dielectric cloaks in both cases were fixed for the wavelength corresponding to fwork=8 GHz. Using a new kind of cloak that uses a very thin multilayer dielectric coating made of natural material, not metamaterial, researchers at Michigan Technological University demonstrated better cloaking efficiency than a similarly sized metamaterial cloak designed by using the transformation optics relations. Michigan Technological University’s invisibility cloak researchers have done it again.

A mitosis mystery solved: How chromosomes align perfectly in a dividing cell To solve a mystery, sometimes a great detective need only study the clues in front of him. Like Agatha Christie's Hercule Poirot and Arthur Conan Doyle's Sherlock Holmes, Tomomi Kiyomitsu used his keen powers of observation to solve a puzzle that had mystified researchers for years: in a cell undergoing mitotic cell division, what internal signals cause its chromosomes to align on a center axis? "People have been looking at these proteins and players in mitosis for decades, and no one ever saw what Tomomi observed," says Whitehead Institute Member Iain Cheeseman. "And it's very clear that these things are happening. Credible or inedible? - opinion - 31 August 2011 For all our sakes, lab-grown meat must be more yum than yuck IN 1932, Winston Churchill made a remarkable prediction about the future of food. Within half a century, he said, it would be possible to grow chicken breasts and wings without the "absurdity of growing a whole chicken". While he may have been a little optimistic, in the past 20 years there has been real progress in growing meat without animals. The world's first lab-grown sausage is scheduled to appear in six months, with a hamburger to follow later (see "Meat without slaughter"). Impressive as these advances are, there is a basic stumbling block when it comes to selling in vitro meat: public acceptability.

Top 10 Scientific Discoveries of 2010 Now that 2010 has come to a close, we take a look at the top ten scientific discoveries and breakthroughs of this past year. 10. Scientists find life built with Arsenic An astrobiology research has found the first known organism able to thrive and reproduce using the toxic chemical arsenic, which has changed the fundamental knowledge about what comprises all known life on Earth.

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