نتایج جستجو برای: oil refining
تعداد نتایج: 149147 فیلتر نتایج به سال:
Used oil has been classified as hazardous wastes by the Ministry of Environment and Forests, Government of India which demands its proper management to avoid serious threat to the environment and for economic gains. Used oil could be recovered or reprocessed and reused as base oil thus saving the use of virgin oil. This paper presents an assessment of the used oil generation and management prac...
The aim of this work was to produce lipases by solid-state fermentation (SSF) using, as substrate, agroindustrial residue supplemented with by-products from corn oil refining process or olive oil. For a group of ten fungi strains selected in the first steps, the lipase activity obtained by SSF varied from 7.7 to 58.6 U/g of dry substrate (gds). Among the evaluated strains, the Aspergillus niger...
In this paper, the outsourcing management in Tabriz Oil Refining Co. has been examined. In this regard, after reviewing the literature, the factors for evaluation of outsourcing management situation were identified, and the research hypotheses were stated. The statistical population of the research includes all the managers and personnel employed in the outsourcing department of Tabriz Oil Refi...
Based on monthly observations, I specify an econometric model capturing the driving forces behind the crude oil price series in recent years. A large set of covariates, such as supply and demand variables as well as futures market variables, is used to test the impact on the crude oil price. Current price movements are a result of scarce refining capacity and speculators betting on higher price...
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