State oil company Petroleos de Venezuela said it "paralyzed" exports to Exxon and cut all commercial ties with the Texas-based firm late Tuesday.

委内瑞拉说，已经停止向美国的埃克森美孚石油公司出售石油，原因是双方对美孚在委内瑞拉资产的补偿上存在法律纠纷。

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Experiments on the polarization and de-polarization process of ER fluids based on zeolite and silicone oil have been done. Also the rising and decaying process of shear stress were investigated.

利用此系统对基于沸石和硅油的电流变液的极化和退极化过程 ，电流变液在不同外加电场强度和不同剪切速率条件下的剪切应力上升和撤去电场时剪切应力的下降过程进行了研究。

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'I call it the caipirinha effect,' says Bob Fryklund, the Rio DE Janeiro-based head of the oil-market research firm IHS-CERA, referring to Brazil's national cocktail.

石油市场研究公司IHS - CERA驻巴西里约热内卢的负责人弗里克隆(Bob Fryklund)说，我把它称作巴西卡皮·利亚鸡尾酒效应。

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Petrobras: The Brazilian government control 60 percent of the Rio de Janeiro-based Petrobras Oil Company and has a final say in its investment decisions.

CENTERFORSECURITYPOLICY: A non-violent tool for countering the Iranian threat

Michael Harris was a geologist in Rio de Janeiro for Devon Energy, a U.S.-based natural gas and oil producer, according to a company spokesman.

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