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sábado, 6 de março de 2010

3 Boas Notícias!

Mais perto da fusão:

Thursday, January 28, 2010
Scientists Overcome Obstacle to Fusion
The world's largest laser system has uniformly compressed and superheated a fuel capsule.
By Kevin Bullis
One of the key outstanding questions about whether it's possible to use lasers to ignite fusion has been answered. A huge, stadium-sized laser facility at the Lawrence Livermore National Laboratory in Livermore, CA, uniformly compressed and heated a tiny capsule to very high temperatures. The experiments confirmed a theory the scientists there had about how to control the energy from 192 high-power lasers to compress the spherical capsule evenly from all sides.
http://www.technologyreview.com/blog/energy/24720/


Um novo Bio-Combustível de Alta Densidade:


New Process Yields High-Energy-Density, Plant-Based Transportation Fuel
by Staff Writers
Madison WI (SPX) Mar 01, 2010
A team of University of Wisconsin-Madison engineers has developed a highly efficient, environmentally friendly process that selectively converts gamma-valerolactone, a biomass derivative, into the chemical equivalent of jet fuel.


While biofuels such as ethanol are becoming more popular as blending agents in automobile fuels, they have limitations for use in jet fuel because of their low energy density. And, given present internal combustion engine designs, conventional biofuels cannot fully replace petroleum-derived hydrocarbons.
http://www.biofueldaily.com/reports/New_Process_Yields_High_Energy_Density_Plant_Based_Transportation_Fuel_999.html


Uma autêntica maravilha, TODOS os Ficheiros da revista Popular Science, à mão de semear:

We've partnered with Google to offer our entire 137-year archive for free browsing. Each issue appears just as it did at its original time of publication, complete with period advertisements. It's an amazing resource that beautifully encapsulates our ongoing fascination with the future, and science and technology's incredible potential to improve our lives. We hope you enjoy it as much as we do.

In the future, we'll be adding more advanced features for searching and browsing, but for now, enter any keyword into the box below and dive in.


http://www.popsci.com/archives


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