Abstract: Removal SO2 done by designed plant in laboratory and industrial scale has been always an important issue and it is because of its harmful effect on environment and human health. This research was aimed to determine the optimum process conditions to absorption of sulfur dioxide from mixture of flue […]

52Obtaining Optimum Conditions for Separation of SO2 Gas from ...



Abstract:   This paper reports the Research (RON) and Motor (MON) Octane Numbers of gasoline blended with an oxygenated compound “ethanol”. The ethanol concentration was varied from zero to 20%, resulting in a clear picture of the variations of the RONs and MONs in all cases. The observed differences then prompt […]

58Gasoline Octane Number Improvement by Ethanol As an Oxygenated ...





Abstract: The present article dealt with studying physical and mechanical properties of binary blend of NBR/PA6. First, samples of NBR/PA6 blends were prepared as control samples then; the effect of Nano-particles on them was studied. The samples mixed with the weight percentages of PA6 (20, 40, and 50) and (2, […]

29the Effect of Nano-Composites on the Mechanic and Morphological ...



Abstract: Solar energy (renewable energy) can play a key role in supplying the increasing energy need of humans and decrease air pollution. The production of hot water in houses for consumption is the most common use of solar energy. In the present study, a solar water heater system (SWHS) is […]

19a Practical Method to Determine the Temperature of a ...



Abstract:   Crown ethers strongly bind certain cations, forming complexes. The oxygen atoms are well situated to coordinate with a cation located at the interior of the ring, whereas the exterior of the ring is hydrophobic. The resulting cations often form salts that are soluble in nonpolar solvents, and for this […]

Trace Metal Role on Crown Ethers Stability by DFT Methods



Abstract: The goal of this research is to investigate of acid red18(AR18) dye from urban drinking water by batch proxy electrochemical reactor with using zinc-copper electrode (distance 2 cm) and hydrogen peroxide. The variables include pH(4-10), concentration of AR18(100-300mg/L), reaction time(15-45min), concentration of hydrogen peroxide(0.5-1.5 mg/L), and current density(3-9 mA/cm2). […]

Proxy Electrochemical Process for Acid Red 18 Dye Removal



Abstract In this study, process asymmetric hollow fiber poly sulfone(PSf) membranes using ethanol (0and 2 wt%) as non-solvent additive in the polymer dope via phase inversion method were fabricated. Aqueous solution of 1-methyl-2-pyrrolidine (NMP, >99.5%) was applied as a bore fluid and water was used as the external coagulant. The […]

Experimental Study on Chemical Carbon Dioxide Absorption Using Porous Polysulfone ...



Abstract:   In this paper, we perform dynamic imbibition simulations on a large scale heterogeneous fractured block. The purpose is to seek optimum conditions under which maximum oil can be recovered in large-scale extremely-heterogeneous reservoirs. In this paper, we only consider horizontal wells. However, we simulate both continuous and slug injection […]

Investigation of Heterogeneous Fractured Blocks



Abstract: In this study, viscosity and density for two-component mixtures of ethyl Formate and 1-pantanol in a temperature range 293.15K to 323.15K and in different mole fraction measurements. From the data obtained, excess molar volumes was calculated and were correlated by Redlich-Kister type equation as a function of temperature and […]

14the Measurement of Excess Molar Volumes in Two-component Mixture ...



Abstract:   Nickel-Aluminum bronze (NAB) alloy is an alloy of copper base that is used extensively for marine applications such as propellers, because it exhibits excellent corrosion resistance and mechanical properties. For surface hardening and elimination of defects caused by the casting alloy, FSP is applied on NAB. In recent years, […]

4Improvement the Surface Structure of Nickel-Aluminum Bronze (NAB) Alloy ...



Abstract:   Crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups. The most common crown ethers are oligomers of ethylene oxide, the repeating unit being ethyleneoxy, i.e., -CH2CH2O-. Important members of this series are the tetramer (n = 4), the pentamer (n = 5), and […]

Recognising Stability of Crown Ethers by DFT Methods



Abstract Asmari formation is one of most important reservoirs in southwest of Iran. Production from this reservoir is mostly due to presence of fracture systems especially in Marun oilfield, hence characterization of fracture zones in reservoir facilitate the specification of perforation zones, analyzing the performance of local faults and fracture […]

Characterization of Fractures of Asmari Formation by Using Image Logs, ...



Abstract:   Drilling process is the most important part of exploitation of hydrocarbon reservoirs and accomplishment of drilling a well is determined by proper choice of the drilling fluid. The drilling fluid is related either directly or indirectly to almost every drilling problem. Improvement of drilling fluid properties therefore would have […]

Effect of a Naturally Derived Deflocculant (Black Myrobalan) on Rheological ...



Abstract: Identification and description of faults in an oilfield will help to prevent problems such as casing collapse, wellbore instability, and hydrocarbon leakage. One way to study the performance of faults is using formation micro imager logs. This type of log does this by fully imaging the wellbore wall. In […]

Study of Faults in Asmari Formation by FMI Image Log, ...



Abstract: Separation and reattachment of air flow through a sudden expansion in an annular passage with uniform heat after step are considered in this paper. The annular passage with step is applied in the design of many heat related applications where heat transfer is concerned. In this work, numerical simulation […]

Numerical Investigation of Turbulence Models for Separation Fluid Flow in ...



Abstract By utilizing spectrophotometry, the present study analyzes the effects of bismuth ion on the reaction of pyrogallol red, hydrogen peroxide and sulfuric acid. In this method, based on the previous experimental samples, the pre-defined concentrations of materials are used. These materials included bismuth 100 ppm, sulfuric acid 1 M, […]

The Analysis of Bismuth Effects on Reaction of Pyrogallol Red, ...



Abstract: Air separation unit (ASU) has become a process integral to many other processes mainly because of the significance of its constituents in many industrial applications. Eminent among them are nitrogen, oxygen and argon. New combination air separation processes for oxygen production are developed that use an uncommon adsorption unit, […]

Combination Mutual Pressure Swing Adsorption and Cryogenic Process to Optimize ...



Abstract: In this paper, the experimental investigation of cascade solar still and the cascade solar still connected to photovoltaic thermal collector is carried out. First, cascade solar still is constructed. Its tile angle is adjusted in 30 degree tangential situation on the ground. All experiments are done in the climate […]

Experimental Investigation of a Cascade Solar Still Connected to a ...



Abstract: The Stirling engine is an external combustion engine that works with any heat source. Surrounded by heating with gas pressure to the piston displacement and cooling gas, the piston reaches the initial point. This paper explores the Laminar flow modeling for analysis and the results of its Laminar flow […]

Laminar Flow Modelling and Analysis of Helium Fluid into the ...



Abstract: In this study, the asphaltene deposition was modeled during natural depletion process. The Langmuir and Toth adsorption models were used to investigate the monolayer and multilayer asphaltene adsorption phenomena onto core surfaces, respectively. A computer program was written to solve the equations with numerical method and the genetic algorithm […]

Modeling Study of Asphaltene Adsorption and Deposition During Natural Depletion ...





Abstract: In this study, several novel derivatives of bis-4-((5-(substituted phenyl)-4H-1,2,4-triazole-3-yl)amino)phenol were prepared using N-((4-hydroxy phenol)carbamothioyl)benzamide and hydrazine hydrate in CH2Cl2 as solvent and under reflux condition. Structure of all compounds were characterized by FT-IR, 1HNMR, 13CNMR. Keywords: Triazole, Thiourea, Hydrazine Hydrate, Dichloromethane

Synthesis of Novel Bis-triazoles by Thiourea Derivatives



Abstract: In this study, bentonite was modified with acidic ionic liquid and ionic liquid-bentonite hybrid characterized with XRD, BET and TGA analyses. The esterification of acetic acid with ethanol was studied over this hybrid and the effect of reaction temperature, type and amount of catalyst, molar ratio and reaction time […]

Synthesis and Chararcterization of Ionic Liquid-Bentonite Hybrid As Catalyst for ...



Abstract: A quick and solvent-free approach involving the exposure of neat reactants to microwave irradiation in conjunction with the use of clinoptilolite 3PW12O40 and Fe2O3 nanoparticle catalysts is described. In this work, condensation of hydroxylamine hydrochloride, sodium acetate, acetoacetic or benzoyl acetic ethyl ester and appropriate aldehydes by employing catalysts […]

Synthesis of 5(4H)-Isoxazolone Under Microwave Irradiation Conditions and Nano Fe2O3 ...