Sottolineature pescate qua e la quando capita

mercoledì 17 marzo 2010

Facebook supera Google è il sito più visitato

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INTERNET
Facebook supera Google è il sito più visitato
Il social network supera la home page del motore di ricerca per una settimana e raddoppia gli utenti in meno di un anno. Ma il traffico totale di Google rimane il più consistente di TIZIANO TONIUTTI

(12:11 17/03/2010)

Né maschio, né femmina: ecco Norrie, il primo "neutro"

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Né maschio, né femmina: ecco Norrie, il primo "neutro"

(16:45 16/03/2010)

«Alfano e Brunetta, fannulloni siete voi» - Corriere della Sera

Né maschio, né femmina: ecco Norrie, il primo "neutro"

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Né maschio, né femmina: ecco Norrie, il primo "neutro"

(16:45 16/03/2010)

martedì 16 marzo 2010

domenica 14 marzo 2010

Stanford develops safer lithium-sulfur batteries with four times the charge of lithium-ion cells

http://www.engadget.com/2010/03/14/stanford-develops-safer-lithium-sulfur-batteries-with-four-times/


Longer battery life is high atop our list of gadget prayers, and the brainiacs at Stanford are one step closer to making our dreams come true with a new lithium-sulfur technology. Half of this trick lies in the silicon nanowire anode that the same team developed back in 2007, whereas the new cathode consists of a similarly commodious lithium sulfide nanostructure. Compared to present lithium-ion batteries, Stanford's design is "significantly safer" and currently achieves 80 percent more capacity, but it's nowhere near commercial launch with just 40 to 50 charge cycles (Li-ion does "300 to 500") due to the compound's rapid degradation. That said, we're promised a theoretical quadruple boost in capacity as the technology matures, so until then we'll keep that hamster running in our backpack.

Stanford develops safer lithium-sulfur batteries with four times the charge of lithium-ion cells originally appeared on Engadget on Sun, 14 Mar 2010 07:29:00 EST. Please see our terms for use of feeds.

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