نتایج جستجو برای: keywords oil economics

تعداد نتایج: 2138802  

Journal: :Cultural Studies 2021

This article pursues two tasks. The first is to clarify the value and productivity of Williams’s Keywords: a vocabulary culture society (first edition 1976, second expanded 1983a) for project Cultural Studies. clarification helped, I argue, by reading it alongside Vološinov’s Marxism philosophy language (published in Russian 1929, translated into English 1973). related task speculative developm...

2012
N K Mohammed Sajid Sankar Ram

–The objective of this work is to study the performance of a split air conditioning system with and without a Matrix Heat Exchanger (MHE) .The experiment was done using HFC134a as the refrigerant and Polyol-ester oil (POE) as the conventional lubricant in the air conditioning system. The performance of the split air conditioning system with HFC134a/POE oil system was compared with HFC134a/POE o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه الزهراء - دانشکده علوم اجتماعی و اقتصادی 1387

رساله حاضر در چار چوب توسعه فرهنگی به بررسی اقتصاد سینما در ایران می پردازد . اقتصاد سینما بخشی از مقوله اقتصاد فرهنگ است برخی بر این باورند که توسعه فرهنگی مستلزم تلقی فرهنگ به عنوان یک فعالیت اقتصادی است .از این روش ، شاخه اقتصاد فرهنگ می تواند بابررسی تحلیل اثرات و نقش فعالیتهای فرهنگی در توسعه اقتصادی نقش ارزنده ای ایفا کند . در این پژوهش با استفاده از روش تحلیل هزینه – فایده به بررسی توج...

2017
Ling Tao Anelia Milbrandt Yanan Zhang Wei-Cheng Wang

Background Biomass-derived jet fuel is an alternative jet fuel (AJF) showing promise of reducing the dependence on fossil fuel and greenhouse gas emissions. Hydroprocessed esters and fatty acids (HEFA) concept is also known as one of the pathways for producing bio jet fuel. HEFA fuel was approved by the American Society for Testing and Materials in 2011, and can be blended up to 50% with conven...

Journal: :iranian economic review 0
farhad ghaffari islamic azad university aghigh farhadi islamic azad university

abstract: this paper discusses two topics. at first, it uses continuous wavelet (morlet) transform, coherency, and phase angle analysis to study the effect of mean volatility in opec crude oil prices, wti crude oil prices, brent crude oil prices and iran’s crude oil prices on the iran’s reer. to this end, the monthly data of the variables for years 2003 to 2012 is used. coherency analysis revea...

Journal: :journal of food biosciences and technology 0

abstract: aqueous enzymatic extraction of oil from pistacia khinjuk was performed using cellulase. the central composite design was used to optimize the parameters that are significant to the process. the influence of three regressors on the percentage of oil recovery from seed was evaluated using second-order polynomial multiple regression model. analysis of variance showed a high coefficient ...

Journal: :journal of food biosciences and technology 0

abstract: olives belong to the family of olea europaea l. is a popular fruit tree. the fruit and the oil extracted from it is consumed worldwide particularly in the mediterranean regions. in this study changes in the fatty acid composition of the oil extracted from olive fruit during the course of maturation is investigated. this work is concerned with the best harvesting point when oleic acid ...

Journal: :I. J. Network Security 2013
Cheng-Chi Lee Shih-Ting Hsu Min-Shiang Hwang

We study the development of conjunctive keyword searchable scheme which enables one to search encrypted documents by using more than one keyword. The notion of conjunctive keyword searching was presented by Golle et al. in 2004. However, their security model was constructed in a symmetric-key setting which is not applicable for the overall applications in the reality. So Park et al. extended Go...

2006
A. Eduardo Gatto

In this paper we present several proofs on the extension of M. Riesz fractional integration and di¤erentiation to the contexts of spaces of homogeneous type and measure metric spaces with non-doubling measures. 1. Introduction, some de…nitions, and a basic lemma Professor M. Ash asked me to write a survey article on some of the results that Stephen Vági and I obtained in the nineties on fractio...

2005
Wen Yu

Crude oil blending is an important unit operation in petroleum re…ning industry. A good model for the blending system is bene…cial for supervision operation, prediction of the export petroleum quality and realizing model-based optimal control. Since the blending cannot follow the ideal mixing rule in practice, we propose a static neural network to approximate the blending properties. By input-t...

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