Browsing Chemical Engineering / Kimya Mühendisliği by Title
Now showing items 94-113 of 395
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Effect of additives on flexible PVC foam formation
(Elsevier, 2008-01)In this study, effects of Ca/Zn stearate and organotin heat stabilizers and zeolite, CaCO3, cellulose and luffa flours fillers, and their concentrations (2.5, 5, 10 and 20% by weight) on production of flexible PVC foams ... -
The effect of bio-based plasticizer on the permanence and water vapour transport properties of PVC plastigels
(Serbian Chemical Society, 2008)Novel formulations of PVC plastisols based on blends of bio-based and synthetic plasticizers were prepared and characterized. A traditional phthalate plasticizer, dioctylphthalate, was replaced in the plastisols studied ... -
Effect of calcium hydroxide on slip casting behaviour
(Elsevier, 2004-02)The effect of calcium hydroxide addition on the casting performance of ceramic slips for sanitary ware was studied. Powder composed of feldspar (24 wt.%), quartz (24 wt.%), kaolin (35 wt.%) and ball clay (17 wt.%) was mixed ... -
Effect of carbonic anhydrase on CaCO3 crystallization in alkaline solution
(American Chemical Society, 2016-12)The effect of bovine carbonic anhydrase (CA) on calcium carbonate (CaCO3) crystallization was investigated. A new method was developed to estimate the biocatalytic activity of CA in alkaline solution. The CA was immobilized ... -
Effect of compaction pressure on structural and superconducting properties of Bi-2223 superconductors
(Springer, 2010-04)In this work, effects of compaction pressure on the structural and superconducting properties of BSCCO ceramic superconductors were investigated. The study was carried out on two systems which were, System I: Bi 1.7Pb 0.3Sr ... -
Effect of corn-zein coating on the mechanical properties of polypropylene packaging films
(Wiley, 2011-01-05)In this study, a novel film structure of corn zein coated on polypropylene (PP) synthetic films for food packaging applications was developed, and the mechanical properties of the resulting coated film, as affected by the ... -
Effect of different acidity modifications on the activity and selectivity on H-ZSM5 zeolites in n-butene isomerization
(Springer, 2014-06)H-ZSM-5 was modified by silylation [tetraethylorthosilicate (TEOS) and triaminopropyltriethoxysilane], alkali (NaOH), acid (HCl) and ammoniumhexafluorosilicate (AHFS) treatments. The parent and modified zeolite forms were ... -
Effect of enzyme location on activity and stability of trypsin and urease immobilized on porous membranes by using layer-by-layer self-assembly of polyelectrolyte
(Elsevier, 2010-12)The layer-by-layer (LbL) self-assembly of polyelectrolyte is one of the simplest ways to immobilize enzyme on membrane. In this paper, the immobilization of trypsin (TRY) and urease (URE) on polyacrylonitrile based membranes ... -
The effect of fiber surface treatments on the tensile and water sorption properties of polypropylene-luffa fiber composites
(Elsevier, 2006-03)The effects of coupling agents on the mechanical, morphological, and water sorption properties of luffa fiber (LF)/polypropylene(PP) composites were studied. In order to enhance the interfacial interactions between the PP ... -
The effect of HCl treatment on water vapor adsorption characteristics of clinoptilolite rich natural zeolite
(Elsevier, 2005-01)In this study, water vapor adsorption properties of the clinoptilolite rich zeolite tuff, from Bigadic (Turkey), and its modified forms were examined. The modified forms were obtained by treating the tuff with HCl solutions ... -
Effect of humidity on electrical conductivity of zinc stearate nanofilms
(Elsevier, 2007-07)In this work, stearic acid (StAc) and zinc stearate (ZnSt2) nanofilms were deposited on glass and silver substrates using Langmuir-Blodgett (LB) film technique and their structural and electrical properties were investigated. ... -
The effect of interfacial interactions on the mechanical properties of polypropylene/natural zeolite composites
(Elsevier, 2004-01)The effect of interfacial interactions on the mechanical properties of polypropylene (PP)/natural zeolite composites was investigated under dry and wet conditions. Interfacial interactions were modified to improve filler ... -
Effect of isotherm shape on mass transfer in an adsorbent particle; An isothermal adsorption process
(Bentham Science Publishers, 2011)The mass diffusion equation and corresponding initial and boundary conditions were non-dimensionalized for a spherical adsorbent particle in an infinite adsorptive medium to reduce number of independent governing parameters ... -
The effect of mass transfer resistance and nonuniform initial solvent concentration on permeation through polymer membranes
(Wiley, 2018-04)A numerical simulation model has been developed which enables one to examine the effects of surface mass transfer resistance on the evaluation of permeation (P*), diffusion (D), and solubility (S) coefficients from ... -
Effect of mixing on LAOS properties of hard wheat flour dough
(Elsevier, 2016-12-01)Large Amplitude Oscillatory Shear (LAOS) tests were conducted at strains ranging from 0.01% to 200% and different frequencies (20, 10, 1, and 0.1 rad/sec) on hard wheat flour dough samples obtained from the different phases ... -
Effect of moisture on adsorption isotherms and adsorption capacities of CO2 on coals
(American Chemical Society, 2009-05)The effect of moisture on the adsorption isotherms and adsorption capacities of CO 2 on Argonne Premium coals has been investigated. In some experiments a small hysteresis was observed between the adsorption and desorption ... -
Effect of operational conditions on separation of lithium from geothermal water by λ-MnO2 using ion exchange–membrane filtration hybrid process
(Taylor & Francis Group, 2018-07)A hybrid system coupling ion exchange and ultrafiltration (UF) was employed to separate lithium from lithium-spiked geothermal water. The effect of process parameters such as adsorbent type, adsorbent dosage, permeate flow ... -
Effect of PEG grafting density and hydrodynamic volume on gold nanoparticle-cell interactions: an investigation on cell cycle, apoptosis, and DNA damage
(American Chemical Society, 2016-06-14)In this study, interactions of polyethylene glycol (PEG)-coated gold nanoparticles (AuNPs) with cells were investigated with particular focus on the relationship between the PEG layer properties (conformation, grafting ... -
Effect of PEO/PPO type triblock copolymers on dispersion behaviour of aqueous alumina suspensions
(Trans Tech Publications, 2001-12)The aim of this study was to investigate the stability and dispersion behaviour of aqueous alumina suspensions in the presence of polyethylene oxide-polypropylene oxide-polyethylene oxide (PEO/PPO/PEO) type block copolymers. ... -
Effect of pH and hydration on the normal and lateral interaction forces between alumina surfaces
(Elsevier, 2006-12)Interaction forces between alumina surfaces were measured using an AFM-colloid probe method at different pHs. For an α-alumina-sapphire system at acidic pH, the force curve exhibited a well-defined repulsive barrier and ...
