Archive for fevereiro \28\UTC 2011

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Potências européias retiram cidadãos da Líbia e companhias petrolíferas euroamericanas pressionam pela deposição de Kadafi

28 de fevereiro de 2011

World Workers
 Feb 27, 2011

European imperialists deploy military forces in Libya evacuations

U.S. imposes sanctions as oil companies salivate over prospect of ‘regime change’

By Deirdre Griswold

Feb. 27 — As fighting continues between government forces and an opposition that is increasingly carrying out military attacks and has taken control of much of Libya’s oil-producing regions, tens of thousands of foreign nationals are leaving the country.

The vast majority are workers who have left on civilian vessels — ferry boats, commercial ships and chartered planes. Other thousands have left by road.

However, the NATO countries — particularly Britain, Germany, Spain and Italy — have sent warships and warplanes to Libya, ostensibly to rescue a few hundred of their nationals. The most complete tally of the evacuations is being provided by Reuters.

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Anúncios
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As disputas pelo controle do petróleo líbio

26 de fevereiro de 2011

McClatchy Newspapers
February 24, 2011

Who’ll control Libya’s oil economy if Gadhafi falls?

By Kevin G. Hall 

WASHINGTON — If Libyan strongman Moammar Gadhafi falls, his nation’s ability to return to normal will depend in no small part on who controls its production of oil, which is synonymous with the Libyan economy.

Oil accounts for anywhere from 70 percent to 90 percent of Libya’s earnings from exports, and the shutdown of oil deliveries amid a widening conflict has sent global prices soaring.

Though it has Africa’s largest reserves, Libya isn’t a major oil producer. It exports only about 1.2 million barrels a day, largely to Europe, while daily world demand totals about 88 million barrels a day, according to the International Energy Agency.

Libya is, however, the first member of the Organization of Petroleum Exporting Countries to teeter on collapse. Several others_ including larger producers Algeria and Iran_ face growing unrest, and markets are alarmed at the possibility of instability spreading perhaps even into Saudi Arabia, the world’s biggest producer.

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Mesmo após o grande terremoto de 2010 o governo do Chile planeja construir Usinas Nucleares no país

25 de fevereiro de 2011

América Economia
24/02/2011 – 16:13

Chile e França firmam pacto de cooperação em energia nuclear

O principal objetivo do acordo está na capacitação de cientistas e profissionais da área nuclear

Paris –  O ministro de Minas e Energia Laurence Golborne se reuniu nesta quinta-feira com o ministro da Economia francês encarregado dos setores de Indústria, Energia e Redes, Eric Besson, no marco da visita do país europeu em busca de novas formas de produção de energia.

Grande Terremoto no Chile em 2010 provoca grande destruição em todo o país - prédio de 15 andares destruído após terremoto - foto: AP. O Chile está localizado na zona de convergência entre as placas tectônicas da América do Sul e de Nazca, uma região sujeita a intenso vulcanismo, terremotos e tsunamis, que não é adequada para a instalação de usinas nucleares.

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“O Desafio do Pré-Sal” no Discovery Channel

23 de fevereiro de 2011

Diário do Pré-Sal
20/02/2010

Discovery Channel debate exploração do petróleo do Pré-Sal em novo documentário

O documentário “O Desafio do Pré-Sal” é a mais recente co-produção do Discovery Channel com a produtora brasileira Mixer, cujo tema é a exploração do petróleo do Pré-Sal. Dirigido por Marcello Bozzin, tem uma hora de duração e entrevista diversos especialistas, desde engenheiros, cientistas, ambientalistas e analistas de relações internacionais e geopolítica do petróleo, que discutem diferentes perspectivas referentes aos principais aspectos da exploração do Pré-Sal, desde sua geografia e formação geológica, passando pelos desafios tecnológicos, financeiros e ambientais, até os aspectos políticos, econômicos e geopolíticos envolvidos na exploração deste grande campo petrolífero que pode conter cerca de 100 bilhões de barris de petróleo, situando sua descoberta entre as maiores das últimas décadas em todo o mundo.

Os demais documentários resultantes desta parceria incluiram temas como as enchentes e as pesquisas com células-tronco, que passaram no Discovery Channel em fevereiro deste ano, todos coproduzidos pela Mixer sob supervisão do Discovery Networks Latin America/US Hispanic.

O vídeo com a chamada para o documentário está disponível na página do programa Ooops! do UOL:

http://storage.mais.uol.com.br/embed.swf?mediaId=9221712

O video documentário “O Desafio do Pré-Sal” estréia no Discovery Channel nesta sexta-feira, 25 de fevereiro, às 22h.

A grade da programação da Discovery Channel prevê que o vídeo será exibido ainda no dia 26 de fevereiro à 1h, às 5h e às 16h, e no dia 05 de março às 14h.

Com informações do Discovery Channel Brasil.
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Potencial instalado de Energia Eólica da China ultrapassa EUA e União Européia

2 de fevereiro de 2011

UOL Notícias
02/02/2011 – 12h02

Energia eólica mundial aumentou 22,5% em 2010, estimulada pela China

Bruxelas, 2 fev (EFE).- A energia eólica mundial cresceu 22,5% no ano passado, aumento que equivale a 35,8 GW (gigawatts), estimulada pelo desenvolvimento na China, onde foram instaladas aproximadamente a metade das novas turbinas, informou nesta quarta-feira o Conselho Internacional de Energia Eólica (GWEC, na sigla em inglês).

Este aumento eleva o número total global a 194,4 GW, em comparação aos 158,7 GW registrados no ano anterior.

O GWEC, que reúne as empresas do setor em escala mundial, calcula que as turbinas instaladas em 2010 representam um investimento de 47,3 bilhões de euros.

A União Europeia e os Estados Unidos, até agora os principais promovedores desta tecnologia, se viram ultrapassados pela China, que em 2010 instalou energia eólica equivalente a 16,5 GW, quase a metade do total mundial.

A China possui 42,3 GW de energia eólica e superou os EUA em termos de capacidade total instalada“, indicou em comunicado a secretária-geral da associação chinesa de energia renovável, Li Junfeng, que assegurou que o país, que já se tornou o maior produtor mundial de instalações, está no caminho de alcançar os 200 GW em 2020.

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China anuncia o desenvolvimento de reator nuclear movido por tório ao invés de urânio

1 de fevereiro de 2011

 

Wired – 01/02/2011

China Takes Lead in Race for Clean Nuclear Power

China has officially announced it will launch a program to develop a thorium-fueled molten-salt nuclear reactor, taking a crucial step towards shifting to nuclear power as a primary energy source.

The project was unveiled at the annual Chinese Academy of Sciences conference in Shanghai last week, and reported in the Wen Hui Bao newspaper (Google English translation here).

If the reactor works as planned, China may fulfill a long-delayed dream of clean nuclear energy. The United States could conceivably become dependent on China for next-generation nuclear technology. At the least, the United States could fall dramatically behind in developing green energy.

“President Obama talked about a Sputnik-type call to action in his SOTU address,” wrote Charles Hart, a a retired semiconductor researcher and frequent commenter on the Energy From Thorium discussion forum. “I think this qualifies.”

CANDU Nuclear Power Plant at Zhejiang, China - wikipedia

Usinas nucleares de Zhejiang, China, onde um dos reatores do tipo CANDU já funciona movido com tório ao invés de urânio (foto: wikipedia)

While nearly all current nuclear reactors run on uranium, the radioactive element thorium is recognized as a safer, cleaner and more abundant alternative fuel. Thorium is particularly well-suited for use in molten-salt reactors, or MSRs. Nuclear reactions take place inside a fluid core rather than solid fuel rods, and there’s no risk of meltdown.

In addition to their safety, MSRs can consume various nuclear-fuel types, including existing stocks of nuclear waste. Their byproducts are unsuitable for making weapons of any type. They can also operate as breeders, producing more fuel than they consume.

In the 1960s and 70s, the United States carried out extensive research on thorium and MSRs at Oak Ridge National Laboratory. That work was abandoned — partly, believe many, because uranium reactors generated bomb-grade plutonium as a byproduct. Today, with nuclear weapons less in demand and cheap oil’s twilight approaching, several countries — including India, France and Norway — are pursuing thorium-based nuclear-fuel cycles. (The grassroots movement to promote an American thorium power supply was covered in this December 2009 Wired magazine feature.)

China’s new program is the largest national thorium-MSR initiative to date. The People’s Republic had already announced plans to build dozens of new nuclear reactors over the next 20 years, increasing its nuclear power supply 20-fold and weaning itself off coal, of which it’s now one of the world’s largest consumers. Designing a thorium-based molten-salt reactor could place China at the forefront of the race to build environmentally safe, cost-effective and politically palatable reactors.

“We need a better stove that can burn more fuel,” Xu Hongjie, a lead researcher at the Shanghai Institute of Applied Physics, told Wen Hui Bao.

China’s program is headed by Jiang Mianheng, son of the former Chinese president Jiang Zemin. A vice president of the Chinese Academy of Sciences, the younger Jiang holds a Ph.D. in electrical engineering from Drexel University. A Chinese delegation headed by Jiang revealed the thorium plans to Oak Ridge scientists during a visit to the national lab last fall.

The official announcement comes as the Obama administration has committed itself to funding R&D for next-generation nuclear technology. The president specifically mentioned Oak Ridge National Laboratory in his State of the Union address Jan. 25, but no government-funded program currently exists to develop thorium as an alternative nuclear fuel.

A Chinese thorium-based nuclear power supply is seen by many nuclear advocates and analysts as a threat to U.S. economic competitiveness. During a presentation at Oak Ridge on Jan. 31, Jim Kennedy, CEO of St. Louis–based Wings Enterprises (which is trying to win approval to start a mine for rare earths and thorium at Pea Ridge, Missouri) portrayed the Chinese thorium development as potentially crippling.

“If we miss the boat on this, how can we possibly compete in the world economy?” Kennedy asked. “What else do we have left to export?”

According to thorium advocates, the United States could find itself 20 years from now importing technology originally developed nearly four decades ago at one of America’s premier national R&D facilities. The alarmist version of China’s next-gen nuclear strategy come down to this: If you like foreign-oil dependency, you’re going to love foreign-nuclear dependency.

“When I heard this, I thought, ‘Oboy, now it’s happened,’” said Kirk Sorensen, chief nuclear technologist at Teledyne Brown Engineering and creator of the Energy From Thorium blog. “Maybe this will get some people’s attention in Washington.”

While the international “Generation IV” nuclear R&D initiative includes a working group on thorium MSRs, China has made clear its intention to go it alone. The Chinese Academy of Sciences announcement explicitly states that the PRC plans to develop and control intellectual property around thorium for its own benefit.

“This will enable China to firmly grasp the lifeline of energy in its own hands,” stated the Wen Hui Bao report.

Fonte: http://www.wired.com/wiredscience/2011/02/china-thorium-power/

  reator de tório

residuos nucleares - urânio x tório

thorium Vs Uranium - urânio x tório

urânio x tório