نتایج جستجو برای: naphthenic acid
تعداد نتایج: 747566 فیلتر نتایج به سال:
The present work deals with a mechanistic model of visbreaking (VB) process. It allows satisfactory predictions of feed and products, amounts and properties overcoming the typical limitations of the empirical models (for instance, in terms of flexibility, extrapolability and so on). The mechanistic VB modeling was initially performed by taking into account just two macro-classes of pseudo-compo...
This study focuses on the mechanisms responsible for enhanced oil recovery (EOR) from fractured carbonate reservoirs by surfactant solutions, and methods to screen for effective chemical formulations quickly. One key to this EOR process is the surfactant solution reversing the wettability of the carbonate surfaces from less water-wet to more water-wet conditions. This effect allows the aqueous ...
There is concern regarding oil sands process water (OSPW) produced by the oil sands industry in Alberta, Canada. Little is known about the potential for OSPW, and naphthenic acids (NAs), which are the primary persistent and toxic constituents of OSPW, to affect endocrine systems. Although ozonation significantly reduces concentrations of NAs and OSPW toxicity, it was hypothesized that oxidation...
گیاهان juniperus excelsa m.beib. ,juniperus communis l. و juniperus sabina l. از گونههای دارویی با ارزش و معطر متعلق به جنس سروکوهی و راسته مخروطیان میباشند که در ارتفاعات رشته کوه البرز پراکندگی دارند. هدف از این پژوهش، شناسایی و مقایسه اجزای تشکیل دهنده اسانس میوه ها و سرشاخههای هوایی این گیاهان میباشد. در این تحقیق میوه و سرشاخههای سه گونه فوق در مرداد سال 1390 از منطقه هزار جریب بهشهر...
The article deals with the process of “waxing” pipes and choice effective measures to prevent these negative phenomena. To assess nature asphalt-resin-paraffin deposits (ARPD) select a further investigation scheme, X-ray Spectral analysis was used. It is shown, that ARPD complex system structured by resinous-asphaltene substances paraffin-naphthenic or paraffin-aromatic hydrocarbons.Mass transf...
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