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Thursday, April 11, 2013

Imaging Nanotechnology Revolution

nano technology
Lead author of the study, Wenge Yang of the Carnegie Foundation's high-pressure synergistic Consortium explained: "the only way to see what will happen in such a sample when under pressure is to use high-energy x-rays produced from Sygchrotro sources. Synchrotrons can provide very coherent x-rays for advanced 3-D imaging with dozens of nanometers of resolution. This is different from the incoherent imaging test that is used for medical examination that has the spatial distribution of micron. The high pressures have radically changed many properties of matter. "

The team found that the average motifs of bent waves--diffraction patterns--the same Crystal using a different sample of alignments in orchestration, and using an algorithm developed by researchers at the London Centre for nanotechnology, can compensate for the distortion and improving the spatial resolution of the two sizes.

"The problem of distortion of the wave is proportional to the prescription glasses for the diamond anvil cell to correct the vision of the coherent x-ray imaging system," noted Ian Robinson, head of the London Group.

Researchers in a single crystal of 400-nanometer (. 000015 inch) of gold by about 8,000 times the pressure at sea level, to 64,000 times that pressure, which is about the pressure in the Earth's upper mantle, the layer between the outer core and crust.

The Group conducted the imaging experiment the Advanced Photon Source, Argonne National Laboratory. Will compress the gold nanocrystal and found, as expected, that the ends of the Crystal becomes sharp and strained. But to their surprise, the executives who disappeared from further compression. The crystal grows a rounder figure in higher pressure, implying an unusual plastic-like flow.

"Nanogold particles are very useful materials," Yang noted. "It is about 60% stiffer in comparison with other micron particle size and could prove to be fundamentally improved to build improved electrodes, nanoscale molecular coatings, and other advanced engineering materials. The new technique will be critical to progress in these areas. "

"Now that it has solved the problem of distortion, the entire construction sector nanocrystal under pressure can be approached," said Robinson. "The scientific mystery of why Nanocrystals under pressure is somehow up to 60% stronger than bulk material can be soon collapsed.
Imaging Nanotechnology Revolution

Wednesday, April 10, 2013

Electronic implants: New fast battery Recharger and invasive transdermal energy feeder

electronic implants
According to the World Health Organization, cardiovascular disease is the leading cause of deaths. In a last resource, patients with cardiovascular disease should be assisted through the surgery and medical devices, to help them to perform the essential functions. However, medical devices, such as a pacemaker that sends electrical impulses to the heart muscle to maintain an adequate heart rate and rhythm, you need a power source and the battery ran out just demanded a surgical procedure that is similar to the original implant to replace the device.

With non-invasive battery recharger for electronic cardiac implants the need for a new surgery is reduced, since this primes from being rechargeable, meaning the patient will not have to throw away after changing batteries every five to seven years, since these are rechargeable by irradiant electricity passing through the body. António Abreu adds that "the non-invasive battery also allows for an adjustment of energy consumption of heart implants, so energy consumption can be set to adjust the function and pathology patients and activity. Ensure the power supply of a communication channel between the exterior for diagnosis and/or reprogramming of the implant. In this case, there will be no demand for energy from the internal battery. "

The principle of operation is the use of a high efficient transdermal system power. However, these typically use electronic converter systems witch create risk of Electromagnetic interference (EMI) that harms the implants in patients. The presentation of innovative ideas that take account of energy efficiency in electrical transmission systems without ferromagnetic cores, and about the medical application. In practice, eliminating the phenomena of Gibbs.

The invention optimizes the flow of energy that is determined by the status of the Explorer Preview in innovative design abacus to forecast-correction.

The abacus is a prediction-correction representation in the complex pattern of a situation where a specific cargo is provided by an electric energy to the active power p and reactive power Q. What characterizes this abacus is the occasion of taking into account the effect of the reaction and resistance of the longitudinal transmission lines that are evident in the number of corner parts position lines that proliferate in first and second quarters of the Argand plan. The best location of the lines sections defines the maximum power transfer without electromagnetic interference.

The original, patented by António Abreu in the USA and in Europe, with the collaboration and support of the PRIME programme (Incentive Program for the modernization of the economy) and approved by the European Commission, originally designed for application of pacemakers, but at this time, and according to medical progress, became new improved techniques to be suitable for high-power (and high voltages too) devicessuch defibrillators, electric heart, insulin pumps or other implantable prosthesis.

In addition, the same principle that allows providing lower power voltages can be applied to improve the electric high power transmission and distribution systems (mains) to reduce costs due to the electrical consumer consumption, according to the results obtained.
Electronic implants: New fast battery Recharger and invasive transdermal energy feeder

Tuesday, April 2, 2013

US-Russian crew blasts off for space station

";Mar 28, 5:13 PM EDT

By DMITRY LOVETSKY
Associated Press AP Photo
AP Photo/Dmitry Lovetsky Science Video Interactives50 years of missions to Mars New Hubble Captures New Images In retrospect: Race to the moon Hubble Telescope: A spy on the universe Preparing for launch after standing down last fall Lunar Testing in Washington Landing on MarsTake a Tour of the International Space Station Lunar Eclipse Seen Around the WorldDocumentsNASA Economic Impact Report (March 2008) Latest NewsRussian spaceship docks with orbiting station Budget cuts could slow commercial space progress Mars rover back in action after computer problems Scientists find universe is 80 million years older NASA moon craft spots Ebb and Flow crash sites Buy AP Photo Reprints BAIKONUR, Kazakhstan (AP) -- A Russian spacecraft carrying a three-man crew blasted off Friday from a launch pad in the steppes of Kazakhstan, for the first time taking a shorter path to the International Space Station.

Instead of the two-day approach maneuver used by Soyuz spacecraft in the past, this journey to the station would take NASA astronaut Chris Cassidy and Russians Pavel Vinogradov and Alexander Misurkin just under six hours.

The Soyuz TMA-08M lifted off on time from the Russian-leased Baikonur cosmodrome at 2:43 a.m. Friday (2043 GMT; 4:43 p.m. EDT Thursday). It's set to dock at the space outpost at 10:32 p.m. EDT Thursday (0232 GMT Friday).

The trio are "on a fast track to the International Space Station," NASA spokesman Josh Byerly said, adding minutes after the launch that all was going well and the spacecraft went into orbit without any problems.

The new maneuver has been tested successfully by three Russian Progress cargo ships, an unmanned version of the Soyuz used to ferry supplies to the space station.

Vinogradov joked at a pre-launch news conference at Baikonur that the journey to the station would be so quick that it could allow the crew to even carry ice cream as a present to the three men currently manning the orbiting outpost.

"It wouldn't melt in such a short time," he said.

On a more serious note, Vinogradov added that the shorter flight path would reduce the crew's fatigue and allow astronauts to be in top shape for the docking. He said that it takes about five hours for the human body to start feeling the impact of zero gravity, so the quicker flight would allow the crew to more easily adapt to weightlessness in much roomier space station interiors.

The downside of the accelerated rendezvous is that the crew will have to stay in their spacesuits, which they don hours before the launch, through the entire approach maneuver.

Other Russian cosmonauts in the past have described the two-day approach maneuver in the cramped Soyuz as one of the most grueling parts of missions to the orbiting station. The spheroid orbiting capsule allows the crew to take off their bulky spacesuits, change into more comfortable clothes and use a toilet, but its interior is extremely confined.

The ship's spartan layout lacks adequate heating and fails to provide an opportunity for the crew to get hot food. It contrasts sharply with the spacious U.S. space shuttle, whose retirement has left Soyuz as the only means to deliver crews to the space outpost.

Russian space officials said the longer approach was necessary at a time when the station was in a lower orbit required for the shuttle flights. After they ended, it was raised from 350 kilometers (217 miles) to 400 kilometers (249 miles), making a quicker rendezvous possible.

NASA is working on the development of its new generation Orion spacecraft. Orion's first trip is an unmanned mission in 2017, and the first manned mission is set for 2021.

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Associated Press writer Vladimir Isachenkov in Moscow contributed to this report.

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US-Russian crew blasts off for space station