processing of heavy crude oils and crude oil residues

... feature-values set of restrictions, with the

Ngày tải lên: 09/03/2014, 01:20

... volume of produced water and other wastes generated as a result of oil and gas E&P in the U.S and how those wastes were managed and disposed of Due to the differences between onshore and offshore ... of dispersed oil in produced water include oil density, interfacial tension between oil and water phases, type and efficiency of chemical treatment, and type, size, and efficiency of the physical ... amount of water produced can be 10 to 20 bbl for each barrel of crude oil produced Wells elsewhere in the world average bbl of water for each barrel of oil (Khatib and Verbeek 2003) The volume of...

Ngày tải lên: 09/03/2014, 01:20

... sa puorg tnemtaert hcae rof detaluclac erew sthgiew ralucitset dna sevreser mreps lamydidipe aduac eht rof rorre dradnats dna naeM sisylana lacitsitatS ypocsorcim thgil rof nisoe dna nilyxotameh ... erew snoitces kciht mµ ehT gninoitces rof xaw niffarap ni deddebme dna ,enelyx ni deraelc ,lonahte fo slevel dedarg ni detardyhed erew yeht ,retaL h 84 rof diulf s’niuoB ni noisremmi yb dexif ... tup gnieb erofeb ecnalab reltteM a gnisu dehgiew erew yehT demmirt erew seussit suoenartxe dna detcessid erew spuorg tset dna lortnoc eht ni star fo sedimydidipe eht ,htaed gniwolloF stnemerusaem...

Ngày tải lên: 07/08/2014, 20:23

... oral dose of Kuwait or South Louisiana crude oil, caused cessation of growth, osmoregulatory impairment, and hypertrophy of hepatic adrenal and nasal gland tissue The biological effects of oil pollution ... Beer (1968), and the acute toxicities of crude oils and oil dispersant mixtures on marine fish and inverterbrates were reported by Eisler (1975) A post hoc approach to the problem of selection ... lapellus on a rocky shore and in the laboratory J Mar Biol Assoc U.K 49, 1067-1092 Eisler R (1975) Acute toxicities of crude oils and oil- dispersant mixtures to Red Sea fishes and inverterbrates Isr...

Ngày tải lên: 14/08/2014, 20:20

... amounts The result of all the heavy metals measured in the contaminated soils shows that the mean range of Fe for the both surface soils was 5645±4.9-7779±3.0mg/kg, while for the soils remediated ... contaminated and remediated soils The rest of the metals measured were very low and within the ambit of acceptability Naturally, soils at various locations have a trace amount of heavy metals even in ... to germinate in the crude oil impacted soils Out of the five heavy metals (or soil quality indicators) used to assess the efficacy of the legumes, Peltophorum pterocarpum and Crotalaria retusa,...

Ngày tải lên: 14/09/2014, 20:14

... storage and processing, intermediate processing, and product blending and distribution This thesis addresses the first and third important components: scheduling of crude oil, and product blending and ... Scheduling of crude oil operation is an important and complex routine task in a refinery It involves crude oil unloading, tank allocation, storage and blending of different crudes, and CDU charging Crude ... costs of purchased crude oils and chemicals, feedstock, their quality issues, optimize and manage crudes and product inventory, increase plant yields, improve visibility of scheduling and inventories...

Ngày tải lên: 11/09/2015, 16:06

... - Variations of reduction rate for (a) TOC, TN and TP, (b) Cr, Fe, Pb, and Zn, and diurnal variations of contact times during field test Table - Mean and standard deviation (SD) of the concentration ... subsoil cracks Journal of soil science and plant nutrient, 76(1), 43-47 Shiratani E., Yoshinaga I., Feng Y W and Hitomi T.(2004) Economic Valuation of Nitrogen Removal/Loading of Cultivated Land ... of TOC, TN and TP However, as the - 13 - Journal of Water and Environment Technology, Vol 7, No 1, 2009 standard deviation (SD) in TP was larger than those of TOC and TN (Table 3) and the reduction...

Ngày tải lên: 05/09/2013, 09:38

... (white and black cement) at the ratio of 1:1:1 (see table 2) The weight of a cement brick is about 3kg of which the ratio of cement and raw material of 1:2 Cement brick produced with high ratio of ... Natural Sciences and Technology 24 (2008) 280-286 Results and discussion 3.1 Analysis result of heavy metal rich sludge composition Analysis result of chemical compositions of heavy metal sludge ... laboratory of Environmental analysis, faculty of Environmental Sciences and department of Environmental analysis, Institute of Environmental Technology 282 N.T Ha et al / VNU Journal of Science,...

Ngày tải lên: 12/02/2014, 17:20

... Beier, Suresh D Pillai, and Timothy D Phillips, Editors; Richard L Ziprin, Associate Editor) Processing and Nutrition of Fats and Oils (Ernesto M Hernandez and Afaf Kamal-Eldin) Processing Organic ... Baldwin) Thermal Processing of Foods: Control and Automation (K.P Sandeep) Trait-Modified Oils in Foods (Frank T Orthoefer and Gary R List) Water Activity in Foods: Fundamentals and Applications ... denaturation of protein, and gelatinization of starch Some of the product system characteristics of importance are the heat transfer coefficients, pressure drop, and extent of fouling Many of these...

Ngày tải lên: 21/02/2014, 22:20

... effects of the SG knockout on granular staining properties and storage of proteases, it was first important to determine whether the lack of SG affected the actual assembly of granules and whether ... (SG)+ ⁄ + and SG– ⁄ – mice (original magnification 5000·) The lower panels show enlarged granules (original magnification · 40 000) cellular storage, processing and secretion of SG and of various ... in processing These findings indicate that the processing of pro-CPA occurs in (at least) two steps, and that the processing of the intermediate form of CPA to mature protease is dependent on a...

Ngày tải lên: 07/03/2014, 11:20

... total of mg of curdione (1), mg of curcumol (2), 10 mg of germacrone (3), 18 mg of curzerene (4), mg of 1,8-cineole (5) and 17 mg of b-elemene (6) from the essential oil (300 mg) in 2.4 mL of the ... Both of the upper and the lower phases were degassed for 30 by ultrasonication before use Aliquots of 300 mg of the essential oil were diluted by 2.4 mL of the mixed solution of lower phase and ... the differences between K2 and K3, and between K4 and K5 in solvent systems (petroleum ether/acetonitrile/acetone 2:1:1 and 4:3:1 v/v/v) are 0.34 and 0.24, and 0.20 and 0.20, respectively, which...

Ngày tải lên: 07/03/2014, 21:20

... by-products of protein turnover Inhibition of proteasome proteolysis by treatment of cells with MG132 (Fig 2, lanes and 5) or epoxomicin (Fig 2, lanes and 6) for  h allows sufficient accumulation of protein ... the EGFR superfamily of tyrosine kinases [55,56] and APP [24,57] The growing appreciation of the role of both the nuclear membrane [58,59] and endosomes [60] in the regulation of transcription suggests ... that often mediates protein dimerization, a putative NLS, and the presence of a region rich in acidic amino acids following the RING domain [4] The presence of a PEST sequence characteristic of...

Ngày tải lên: 15/03/2014, 00:20

... sorption capacity of soils was found to highly correlate with Co content and surface area and to a lesser extent with Mn and clay contents and pH [176] Almost all of the Co in soils could be accounted ... precipitates of another phase 11 Summary Soil is one of the key elements for all terrestric ecosystems and is a very complex heterogeneous medium consisting of soil matrix, soil water, and soil air Heavy ... adsorption are soil pH, type and speciation of metal ion involved, heavy metal competition, soil composition and aging The individual behavior of Cd, Cr, Pb, Cu, Mn, Zn, and Co in soils is described...

Ngày tải lên: 15/03/2014, 23:09

... increases in heavy metal uptake (Khan and Frankland 1983) Soil pH significantly influences heavy metal concentrations in both soil and plant tissues The effect of soil pH on mobility of heavy metals ... addition of lime to contaminated soils (essentially increasing the pH) decreased the uptake of heavy metals In unlimed soils Ambrosia trifida accumulated 13.6 µg Cd g-1 of tissue and in limed soils ... immobilization of heavy metals, and there is very little leaching through the soil profile (Khan and Frankland 1983) Immobilization can increase the Cd concentration of the soil and ultimately...

Ngày tải lên: 15/03/2014, 23:10

... covered by trees and spontaneous plants The land in the zone is made of alluvial deposits The top layer of the soil, down to a depth of from 0.6 to m, is composed of sand with silt and clay, with ... made of sand and silt Groundwater flows at a depth of about m The contaminated area, whose estimated extension and volume are 5000 m2 and 17,000 m3 respectively, is made up of a mixture of industrial ... One of the pieces of material analysed (A15) has concentrations similar to ones of the relief, whereas the other (A16) has a very high copper level and low content of Fe and of La, Sc, Ti, V and...

Ngày tải lên: 15/03/2014, 23:56

... spiking and incubation, it appeared that bio-oxidation of organic carbon and consequent acidification effected release of Ni, Cu, and Cd from F5 (residual fraction), of Ni and Zn from F3 fraction, of ... Ni, Cu, and Cd, into F4 fraction in case of Pb, Cu, and Cd, into F2 fraction in case of Ni, Cd, Pb, and Cu and invariably increased the F1 fraction (water soluble and exchangeable form) of all ... distribution of different chemical pools of heavy metals in sludge and metal-spiked incubated sludge is depicted in Fig Spiking and incubation appeared to increase the proportions of Cd and Ni in F1 and...

Ngày tải lên: 16/03/2014, 00:07

... handling The surface and cross-section view of pore structure for membranes anodized in sulfuric and oxalic acid are shown in the SEM images (Fig 4) Fig 4(a) and (b) shows the surface views of ... dynamic equilibrium of oxidation and chemical dissolution The dynamic equilibrium of the oxide formation (highly dependent on the acid concentration and availability of oxygen ions) and dissolution ... diameter, and thickness of the Sulfuric acid concentration (wt%) 12.5 15 20 2, 3, 5, 7, 10, and 20 and Voltage (V) Oxalic acid concentration (wt%) 30 40 2.7 2.7 194 A Belwalkar et al / Journal of Membrane...

Ngày tải lên: 19/03/2014, 16:48

... snoRNP, depletion of which causes inhibition of cleavages at sites A0, A1 and A2, leading to decreased levels of 18S rRNA [10] Mpp10p is part of a ternary complex with Imp3p and Imp4p, and these proteins ... levels of 40S ribosomal subunit, an accumulation of free 60S subunit, and consequent low number of polysomes (B) Analysis of ribosomal subunits through sucrose gradient in the presence of EDTA ... depletion of Utp25p there is an accumulation of the pre-rRNA 35S and the aberrant 23S, and a decrease in pre-rRNA 20S and mature 18S rRNA (Fig 5A) The large ribosomal subunit RNAs 25S, 5.8S and 5S...

Ngày tải lên: 22/03/2014, 21:21

... specification of a theory of this sort might sharpen quite considerably our view of the computational issues involved in natural language processing And it would simultaneously be of considerable ... properties of grammars In R D Luce, R R Bush, and E Galanter, eds., H~ndbook of Mathematical Psychology If John Wiley Chomsky, N (1981) Knowledge of language: its elements and origins Phil Trans of ... But the cor~ I _nt of (6) {xcvJx and ~ are in (& + ~)* and ~ # ~} in (~ + b)*E(& + ~)* is (7a), string matching language identical to (7b), a (7)a {xcvl~ and ~ are in (~ + b)* and x = ~} b {xcx[x...

Ngày tải lên: 24/03/2014, 01:21

... production and printing industry Discussions about the effect of climatic influences during storage and transport and in the process of printing and finishing, are as old as the industrial production of ... many of the relations have not yet been sufficiently explained And in some cases, cause and effect remain completely obscure In the practice of paper processing, many delusions and misunderstandings ... flatness and runnability of the paper This publication is intended to help clarify some of the more serious negative effects of climate circumstances It offers guidelines for correct handling of coated...

Ngày tải lên: 24/03/2014, 05:20