joi, 31 ianuarie 2008
miercuri, 30 ianuarie 2008
Osama bin Laden... Osama Obama... Barack Obama...
Omul cu par alb este senatorul Edward Kennedy, fratele mai mic al lui JFKennedy si Robert Kennedy.
Mai jos, o confuzie aproape asemanatoare facuta de CNN, care in loc de WHERE IS OSAMA a titrat WHERE IS OBAMA? Si asta vrea sa ajunga presedintele Americii...
vineri, 18 ianuarie 2008
Goodbye, Bobby...
Am invatat sa joc sah pe vremea cand Bobby Fischer era campion mondial. Nu am inteles de ce a refuzat sa joace cu Karpov pentru a-si pastra titlul mondial. A fost un rebel, un self-hating jew si un geniu. A murit azi, la 64 de ani, exilat in Islanda...
Good point, mr King...
Baiatul ala de venea la vanatoare in Romania, pe vremea lu Nea Nicu, a evoluat, a invatat gesturi noi...
Novak Jokovici
Tânărul jucator de tenis din Serbia este cunoscut si pentru ca ii imita pe colegii si coegele din turneele internationale. Cel mai bine ii iese Şarapova. Enjoy...
joi, 17 ianuarie 2008
Laptop cu baterie care ţine 40 de ore?
Imagine running your laptop nonstop from New York to Tokyo -- crunch some numbers, work on a memo pop in a few DVDs -- and then do a full day of meetings, using your machine throughout the day and into the night. Imagine doing all this without ever plugging in your computer to recharge its battery.
This scenario may become reality in the near future, if Stanford University scientists succeed in commercializing a breakthrough in the laboratory. Assistant Professor Yi Cui and associates at Stanford's Department of Materials Science and Engineering said they have developed a method to increase the life of rechargeable lithium ion batteries to a whopping 40 hours.
Publishing in the journal Nature Nanotechnology, the Stanford researchers have shown that by using silicon nanowires as the battery anode instead of today's graphite, the amount of lithium the anode can hold is extended tenfold.
Revolution in Battery Design
"It's not a small improvement," Cui said. "It's a revolutionary development." And Cui means to move the development out of the lab as soon as possible. "We are working on scaling up and evaluating the cost of our technology," Cui said. "There are no roadblocks for either of these."
Cui has filed a patent on the technology and is evaluating the formation of a company or licensing the technology to a battery manufacturer. Potentially two-day batteries could be on the market within "several years," he said.
Silicon anodes are not a new idea. Researchers have known for some 30 years that they have the "highest theoretical charge capacity," but, until now, they haven't been practical because they change volume by 400 percent as lithium is inserted and extracted, the journal said. Cui's solution: a sponge-like network of tiny silicon nanowires, each of which expands but doesn't fracture.
"Nanowires grown directly on the current collector do not pulverize or break into smaller particles after cycling," the journal reports. "Rather, facile strain relaxation in the nanowires allows them to increase in diameter and length without breaking."
The Many Advantages of Nanowires
Not only can the nanowires handle the extreme volume changes, they also "provide good electronic contact and conduction, and display short lithium insertion distances," Cui wrote. "We achieved the theoretical charge capacity for silicon anodes and maintained a discharge capacity close to 75 percent of this maximum, with little fading during cycling."
The nanowires are grown directly on the metallic substrate that collects current, a process that has several advantages, Cui explained. First, the nanowires' small diameter can better accommodate the four-fold expansion in volume without fracturing. In addition, each nanowire is electrically connected to the metallic current collector, so all the nanowires contribute to battery capacity.
The nanowires also offer efficient "charge transport" and eliminate the need for additives to conduct electricity, which add weight, the journal stated. In addition to Cui, the researchers were Candace K. Chan, Hailin Peng, Gao Liu, Kevin McIlwrath, Xiao Feng Zhang and Robert A. Huggins
This scenario may become reality in the near future, if Stanford University scientists succeed in commercializing a breakthrough in the laboratory. Assistant Professor Yi Cui and associates at Stanford's Department of Materials Science and Engineering said they have developed a method to increase the life of rechargeable lithium ion batteries to a whopping 40 hours.
Publishing in the journal Nature Nanotechnology, the Stanford researchers have shown that by using silicon nanowires as the battery anode instead of today's graphite, the amount of lithium the anode can hold is extended tenfold.
Revolution in Battery Design
"It's not a small improvement," Cui said. "It's a revolutionary development." And Cui means to move the development out of the lab as soon as possible. "We are working on scaling up and evaluating the cost of our technology," Cui said. "There are no roadblocks for either of these."
Cui has filed a patent on the technology and is evaluating the formation of a company or licensing the technology to a battery manufacturer. Potentially two-day batteries could be on the market within "several years," he said.
Silicon anodes are not a new idea. Researchers have known for some 30 years that they have the "highest theoretical charge capacity," but, until now, they haven't been practical because they change volume by 400 percent as lithium is inserted and extracted, the journal said. Cui's solution: a sponge-like network of tiny silicon nanowires, each of which expands but doesn't fracture.
"Nanowires grown directly on the current collector do not pulverize or break into smaller particles after cycling," the journal reports. "Rather, facile strain relaxation in the nanowires allows them to increase in diameter and length without breaking."
The Many Advantages of Nanowires
Not only can the nanowires handle the extreme volume changes, they also "provide good electronic contact and conduction, and display short lithium insertion distances," Cui wrote. "We achieved the theoretical charge capacity for silicon anodes and maintained a discharge capacity close to 75 percent of this maximum, with little fading during cycling."
The nanowires are grown directly on the metallic substrate that collects current, a process that has several advantages, Cui explained. First, the nanowires' small diameter can better accommodate the four-fold expansion in volume without fracturing. In addition, each nanowire is electrically connected to the metallic current collector, so all the nanowires contribute to battery capacity.
The nanowires also offer efficient "charge transport" and eliminate the need for additives to conduct electricity, which add weight, the journal stated. In addition to Cui, the researchers were Candace K. Chan, Hailin Peng, Gao Liu, Kevin McIlwrath, Xiao Feng Zhang and Robert A. Huggins
Golf din Golf
Bre, nea Videanus, am venit bre in Bukresti, bre, asa cum am vorbit la noi la Dubai. Da' ce patit la voi la Bukresti, nu putem parca masin, bre... Unde e bordur, bre, cu care te laudai, bre? Io am venit de la Emirate, bre, sa investesc, aici la Bukresti, o shaormarie, o kebabarie, dar vad ca e oras de rahat, bre...
miercuri, 16 ianuarie 2008
Ilustrate cu flori de Oscar
Jale mare, stimati telespectatori... Filmul lui Cristian Mungiu, 432, NU, repet, NU va fi nominalizat la premiile Oscar! Asta dupa ce a ratat si Globul de Aur!!! Nu vreau sa par lipsit de patriotism, dar vreau sa subliniez un lucru: de ce se ridica in slavi un film despre ororile din comunism, film realizat la 17-18 ani de la caderea regimului comunist?
La sfarsitul lunii decembrie am avut ocazia sa vad la Procinema filmul "Ilustrate cu flori de camp", regia Andrei Blaier, cu Carmen Galin, Dan Nutu, Draga Olteanu Matei, Gheorghe Dinica si altii... Un film realizat in 1974, care nu a fost premiat la Cannes sau in alta parte, un film in care este vorba despre o fata din Bucuresti (Carmen Galin) care vine intr-un port dunarean pentru a face un avort la o "specialista". In fine, nu va povestesc filmul, nu am talentul asta... (ala negru de respira greu era tac'su!). Dar sa faci un film in 1974 despre avort denota un act de curaj. Jos palaria domnule Blaier!
La sfarsitul lunii decembrie am avut ocazia sa vad la Procinema filmul "Ilustrate cu flori de camp", regia Andrei Blaier, cu Carmen Galin, Dan Nutu, Draga Olteanu Matei, Gheorghe Dinica si altii... Un film realizat in 1974, care nu a fost premiat la Cannes sau in alta parte, un film in care este vorba despre o fata din Bucuresti (Carmen Galin) care vine intr-un port dunarean pentru a face un avort la o "specialista". In fine, nu va povestesc filmul, nu am talentul asta... (ala negru de respira greu era tac'su!). Dar sa faci un film in 1974 despre avort denota un act de curaj. Jos palaria domnule Blaier!
marți, 15 ianuarie 2008
Un cretin in Bagdad...
Humvee Driving In Iraqi Traffic - Watch more free videos
...la volanul unui Hummer. Evident, militar american. Si se mai mira ca ii omoara irakienii...
duminică, 13 ianuarie 2008
luni, 7 ianuarie 2008
Capitala ca zăpada şi cei şapte (primari) pitici
La mulţi ani în noul an celor care dau pe aici şi în special prietenilor. O dedicaţie specială tuturor...
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