Electromagnetically Induced Invisibility Cloak Can be Switched On and Off

Arxiv – Electromagnetically induced invisibility cloaking (5 pages) Invisibility cloaking imposes strict conditions on the refractive index pro files of cloaking media that must be satis fied to successfully hide an object. The first experimental demonstrations of cloaking used arti ficial metamaterials to respond to this challenge. In this work we show how a much …

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Paralyzed Rats Walk Again

Technology Review – Spinal stimulation combined with assisted walking therapy generates new neural circuits and restores voluntary leg movement. Rats paralyzed by spinal-cord injury can learn to control their hind limbs again if they are trained to walk in a rehabilitative device while their lower spine is electrically and chemically stimulated. A clinical trial using …

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FDA Considers a pill for HIV Prevention which can reduce infection by 75%

Federal drug regulators on Tuesday affirmed landmark study results showing that a popular HIV-fighting pill can also help healthy people avoid contracting the virus that causes AIDS in the first place. While the pill appears safe and effective for prevention, scientists stressed that it only works when taken on a daily basis. The Food and …

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China Official Actual GDP Growth Compared to Targets

Sources: Central People’s Government of the People’s Republic of China, IMF; as of 03/05/2012. IMF estimated growth rates are based on constant 1990 prices in Chinese yuan Fisher Investments writing at theStreet. Historically, China’s official growth target has been the lower bound of a range — an easily attainable threshold they can boast of beating …

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Why is China doomer Gordon Chang so wrong ?

Gordon G. Chang is a lawyer and author, best known for his book The Coming Collapse of China, in which he argued that the hidden non-performing loans of the “Big Four” Chinese State banks would likely bring down China’s financial system and its communist government and China would collapse in 2006. He has in recent …

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Eight Projects Funded for the Gates Foundation Reinvent the Toilet Challenge

The Water, Sanitation & Hygiene program of the Bill and Melinda Gates Foundation recently challenged 22 universities to submit proposals for how to invent a waterless, hygienic toilet that is safe and affordable for people in the developing world and doesn’t have to be connected to a sewer. Eight universities were awarded grants to “reinvent …

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A detailed Qualitative Approach to the Cold Fusion Nuclear Reactions of H/Ni

Christos Stremmenos has presented a new theory about the Rossi and Focardi low energy nuclear reactions The following two questions should be answered: 1. Which is the supposed mechanism that overcomes the powerful electrostatic repulse (Coulomb barrier) between the “shielded proton” and the Nickel nucleus? 2. For what reason there is almost no radiation of …

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AIDS tranmission could be stopped with about a 40% increase in funding and effort

About $16 billion a year is spent on AIDS in poor and middle-income countries. Half is generated locally and half is foreign aid. A report in this week’s Lancet suggests a carefully crafted mixture of approaches that does not involve treating all those without symptoms would bring great benefit for not much more than this—a …

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Lead telluride with selenium and sodium has thermoelectric ZT of 1.8

Valence band structure of PbTe1 − xSex. Researchers have long tried to enhance the thermoelectric effect (turning heat into electricity) to make the devices practical. In doing so, the goal is typically to increase a property in the materials known as ZT, which depends on a set of factors that include a material’s ability to conduct heat …

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MIT researchers use genetically modified virus to produce structures that improve solar-cell efficiency by nearly one-third

In this diagram, the M13 virus consists of a strand of DNA (the figure-8 coil on the right) attached to a bundle of proteins called peptides — the virus coat proteins (the corkscrew shapes in the center) which attach to the carbon nanotubes (gray cylinders) and hold them in place. A coating of titanium dioxide …

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