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terça-feira, 28 de setembro de 2010

Novidades

A Universidade de Arizona revela-nos uma prometedora maneira de aproveitar calor como nunca antes, de calor directamente para a corrente eléctrica, E... Com 100 vezes mais rendimento:

Turning Waste Heat Into Power

UA physicists have discovered a new way of harvesting waste heat and turning it into electrical power. Taking advantage of quantum effects, the technology holds great promise for making cars, power plants, factories and solar panels more efficient.

What do a car engine, a power plant, a factory and a solar panel have in common? They all generate heat – a lot of which is wasted.
University of Arizona physicists have discovered a new way of harvesting waste heat and turning it into electrical power.

Espuma de Titânio para reparar e/ou substituír ossos:

Titanium foams replace injured bones

Flexible yet rigid like a human bone, and immediately capable of bearing loads: A new kind of implant, made of titanium foam, resembles the inside of a bone in terms of its structural configuration. Not only does this make it less stiff than conventional massive implants. It also promotes ingrowth into surrounding bones. 
The greater one‘s responsibilities, the more a person grows. The same principle applies to the human bone: The greater the forces it bears, the thicker the tissue it develops. Those parts of the human skeleton subject to lesser strains tend to have lesser bone density. The force of stress stimulates the growth of the matrix. Medical professionals will soon be able to utilize this effect more efficiently, so that implants bond to their patients‘ bones on more sustained and stable basis.



...E Turismo no Espaço!

Virgin to launch space tourism in 18 months
 

AFP - Billionaire entrepreneur Richard Branson said Monday that Virgin Galactic is on track to offer commercial space travel within 18 months, and that space hotels are next on the drawing board.
The project's SpaceshipTwo, an aircraft built by aviation engineer Burt Rutan and designed to carry paying customers into suborbital space, had its maiden flight in the California desert in March.
"We just finished building SpaceShipTwo. We are 18 months away from taking people into space," Branson told a business conference in Kuala Lumpur, adding that the fare will start at 200,000 dollars.
Virgin Galactic, which aims to become the world's first commercial company to promote space tourism, has already collected 45 million dollars in deposits from more than 330 people who have reserved seats aboard the six-person craft.
 http://www.france24.com/en/20100927-virgin-launch-space-tourism-18-months

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