نتایج جستجو برای: oil output
تعداد نتایج: 321853 فیلتر نتایج به سال:
The objective of this paper is to investigate the impacts of implementation of the FTAA and China’s lower import tariffs on international trade of soybean oil, soybean meal, and soybeans. A two-commodity spatial model was formulated. The base model was calibrated to simulate the average level data of 1996, 1997, and 1998. Two alternative trade scenarios were simulated. The results indicated tha...
We investigate how the dynamic e¤ects of oil supply shocks on the US economy have changed over time. We rst document a remarkable structural change in the oil market itself, i.e. a considerably steeper, hence, less elastic oil demand curve since the mid-eighties. Accordingly, a typical oil supply shock is currently characterized by a much smaller impact on world oil production and a greater e¤...
Recently we demonstrated that dietary fish oil (FO) causes changes in intrahepatic cholesterol transport and hypersecretion of cholesterol into bile in rats (J Clin. Znuest. 88: 943-951, 1991). We have now investigated in more detail the relationship between cholesterol and bile acid secretion in rats with chronic bile diversion fed purified diets supplemented (9% wt/wt) with either FO or corn ...
The aim of the current study is to evaluate the effects of inhibitors or solvents on asphaltene precipitation under reservoir conditions. To this end, the interaction between live oil and solvent, and its side effects on precipitated/dissolved asphaltene were predicted via Miller’s entropy modified polymer solution theory under reservoir conditions. Then, the adjustable parameters of the model ...
کرچک (ricinus communis l.) یکی از مهمترین گیاهان دارویی مورد استفاده در صنایع داروسازی، آرایشی و بهداشتی بیشتر کشورهای توسعه یافته است. روغن بدست آمده از دانه های این گیاه جزء با ارزش ترین مواد مسهل و ملین در پزشکی می باشد. فاکتورهای اقلیمی بویژه عرض جغرافیایی، ارتفاع محل، درجه حرارت، شدت نور، بارندگی و خصوصیات خاک، تاثیر عمده ای بر کمیت و کیفیت مواد موثره می گذارد. به منظور مطالعه تاثیر اقلیم ...
اغلب پروسس هایی که در صنایع و به خصوص صنایع شیمیایی وجود دارند ورودی و خروجی های متعددی دارند. کنترل این پروسس ها که به نام : mimo (multiple input-multiple - output) معروفند، به سادگی کنترل سیستم های تک ورودی و تک خروجی : siso (single input single output) نمی باشد. زیرا سیستم های mimo تداخلی بوده و استفاده از حلقه های متعدد به فرم معمول در اغلب موارد پاسخ های مناسبی بوجود نخواهد آورد. به همین د...
The purpose of this paper is to investigate the system of oil revenues effects on the production performance of oil-rich countries in both short and long-run. To reveal new insight, a macroeconomic model is designed to hypothesize long-run structural relations in the economies of the oil-rich countries including three long-run relationships of real output, real money balance, and the adjusted p...
the paper examines for the first time the foreign exchange intervention policy in foreign exchange market of iran. and in this framework, the study designs and simulates the foreign exchange intervention model in iran. in the first section, the paper shows that the injection of oil revenues directly to economy and also the absence of potent structure of output are inclusively caused the central...
This paper examines the determinants of foreign direct investment (FDI) in Iran by applying the structural equation modelling (SEM). Using the annual time series data for the 1991-2006 period, two models were developed. In the first model the correlation between 12 determining factors and FDI in Iran were analyzed and in the second model the 12 factors were fit into five categories of determina...
The purpose of this research work was to investigate the optimum operating conditions for biodiesel production from castor oil using a microwave. The Box–Behnken design of experiment was carried out using the Design Expert 7. A response surface methodology (RSM) was used to analyze the influence of the process variables (molar ratio of methanol to castor oil, catalyst concentration, reaction ti...
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