نتایج جستجو برای: crude

تعداد نتایج: 38006  

Journal: :The Journal of the Japan Institute of Metals.A 1950

Journal: :Scientific American 1902

Journal: :تحقیقات اقتصادی 0
کیومرث حیدری استادیار، مشاور رئیس پژوهشگاه نیرو و مدیر گروه اقتصاد برق و انرژی

as a result of higher crude oil prices, in one hand, it is expected that alternative energy resources consumption is increased and consumers change their behavior to decline energy intensity too. on the other hand, more alternative energy consumption can leads to a decline of crude oil aggregate demand. therefore, existence of mutual causality between crude oil price and alternative energy cons...

Journal: :Journal of the Fuel Society of Japan 1970

2016
Abdullah Al-Sayegh Yahya Al-Wahaibi Sanket Joshi Saif Al-Bahry Abdulkadir Elshafie Ali Al-Bemani

Crude oil contamination is one of the major environmental concerns and it has drawn interest from researchers and industries. Heavy oils contain 24-64% saturates and aromatics, 14-39% resins and 11-45% asphaltene. Resins and asphaltenes mainly consist of naphthenic aromatic hydrocarbons with alicyclic chains which are the hardest to degrade. Crude oil biodegradation process, with its minimal en...

2015
Xiao Yun Seong-Min Yoon

Crude oil exerts a strong influence on national economy. Changes of international crude oil price have an important effect on Chinese economy because of China’s high dependence on the import of the crude oil. Thus, Chinese stock market can be shocked by the fluctuation of oil price. Reversely, changes in crude oil imports of China have some effect on demands and price of the crude oil. This art...

Journal: :Journal of animal science 2008
C N Groesbeck L J McKinney J M Derouchey M D Tokach R D Goodband S S Dritz J L Nelssen A W Duttlinger A C Fahrenholz K C Behnke

The objective of this study was to determine the effects of diets containing crude glycerol on pellet mill production efficiency and nursery pig growth performance. In a pilot study, increasing crude glycerol (0, 3, 6, 9, 12, and 15%) in a corn-soybean meal diet was evaluated for pellet mill production efficiency. All diets were steam conditioned to 65.5 degrees C and pelleted through a pellet ...

Journal: :Computers & Chemical Engineering 2013
Thordis Anna Oddsdottir Martin Grunow Renzo Akkerman

This paper addresses procurement planning in oil refining, which has until now only had limited attention in the literature. We introduce a mixed integer nonlinear programming (MINLP) model and develop a novel two-stage solution approach, which aims at computational efficiency while addressing the problems due to discrepancies between a non-linear and a linearized formulation. The proposed mode...

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