نتایج جستجو برای: petroleum product

تعداد نتایج: 295534  

Journal: :IJSSMET 2014
Senan A. Ghallab Nagwa Lotfy Badr Abdel-Badeeh M. Salem Mohamed F. Tolba

Petroleum exploration and production is an industry that provides researchers with multi-variant challenging “real world” properties. Recently, some petroleum soft computing techniques have gained a greater interest in prediction within the oil industry. This paper is interested in the analysis, classifying, mining and predictions, based on fuzzy as an intelligent system and an intelligent syst...

2000
D. M. Jones

A method is described for extracting the petroleum from petroleum-bearing ̄uid inclusions hosted in the diagenetic cements of sedimentary rocks, whilst minimising contamination from petroleum in the pore space. A clean-up technique, involving the addition of extraction standards to the rock prior to analysis, has been developed that allows increased con®dence that the hydrocarbons extracted are...

2012
Michael D. Mitchell Walter E. Beyeler Matthew Antognoli Marshall A. Kuypers Robert J. Glass

Unexpected price spikes in petroleum can lead to instability in markets and have a negative economic effect on sectors which rely on petroleum consumption. Sudden rises in the price of petroleum do not have to be long-term to cause negative, cascading impacts across the economy. Firms which make futures purchases or hedge against a higher price during a price spike can become insolvent when the...

Journal: :Biology letters 2010
Ming Nie Qiang Yang Li-Fen Jiang Chang-Ming Fang Jia-Kuan Chen Bo Li

Biomass allocation is an important plant trait that responds plastically to environmental heterogeneities. However, the effects on this trait of pollutants owing to human activities remain largely unknown. In this study, we investigated the response of biomass allocation of Phragmites australis to petroleum pollution by a ¹³CO₂ pulse-labelling technique. Our data show that plant biomass signifi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی صنایع 1386

فرآورده های نفتی یکی از مهم ترین حامل های انرژی در کشور ما محسوب می شود. بنابراین تغییرات قیمت این محصولات می تواند تأثیر بسزایی بر شاخص های اقتصادی، اجتماعی و سیاسی کشور بگذارد. پایان نامه حاضر تلاشی برای تحلیل آثار افزایش قیمت فرآورده های نفتی بر بخش اقتصادی کشور می باشد. در این میان، بنزین به عنوان نماینده فرآورده های نفتی انتخاب و برای توصیف وضعیت اقتصادی کشورمان نیز دو متغیر نرخ تورم و میز...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1387

the outcome of this research is a practical framework for “idea generation phase of new product development process based on customer knowledge”. in continue, the mentioned framework implemented in a part of iran n.a.b market and result in segmenting and profiling this market. also, the critical new product attributes and bases of communication message and promotion campaigns extracted. we have...

2012
Manoj Srivastava Manoj Kumar U. C. Agrawal M. O. Garg

Several petroleum pitches have been prepared by thermal treatment of various petroleum-derived residues such as clarified oil, aromatic extract and pyrolysis tars. These pitches were characterized physico-chemically (softening point, coking value, QI, & TI) and instrumentally (NMR) and compared. Attempts have been made to correlate physicochemical properties of petroleum residues and pitches wi...

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