Activation energies
Temperature Effect, Activation Energies and Thermodynamics of Adsorption of ethyl 2-(4-(2-ethoxy-2-oxoethyl)-2-pTolylquinoxalin-1(4H)-yl)Acetate on Cu in HNO3
... calculated activation energies, E a , and pre-exponential factors, A, at different concentrations of the inhibitor are collected in Table ...apparent activation energies may be explained by ...
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Synthesis and Characterization of CdS Nanoparticles Grown in a Polymer Solution using in-situ Chemical Reduction Technique
... ac activation energies for the present nanocomposite samples at a different frequency are shown in ...the activation energies decrease with an increment of the applied electrical field ...
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Thermodynamic parameters of bonds in glassy materials from viscosity-temperature relationships
... silica glasses, salol, and α-phenyl-ο-cresol. Excellent fits of the equation to the viscosity data were obtained over the entire temperature range. The fitting parameters were used to quantitatively determine the ...
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Thermal annealing of nuclear graphite during in-situ electron irradiation
... Electron irradiation of PGA graphite within a transmission electron microscope has been investigated for five temperatures: 83 K, 293 K, 373 K, 423 K and 473 K. Analysis of TEM lattice images and FFT patterns showed that ...
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Synthesis and characterisation of the new oxyfluoride Li+ ion conductor, Li5SiO4F
... Conductivities and activation energies of -Li5SiO4F and Li4SiO4 are similar whereas the conductivity of - Li5SiO4F is several orders of magnitude higher, especially at lower temperatures[r] ...
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Effect of Thickness on the Structure and Electrical Conductivity Properties of CuInSe2 Thin Films
... the activation energies (Ea 1 , Ea2), hall mobility and the carrier concentration are investigated as function of ...the activation energy (Ea) ...
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New Eco-Friendly Corrosion Inhibitors Based on Phenolic Derivatives for Protection Mild Steel Corrosion
... The presence of phenolic derivatives increases the activation energies of mild steel indicating strong adsorption of the phenolic molecules on the metal surface and the presence of these[r] ...
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Electrical conductivity of polycrystalline uranium dioxide
... Calculated activation energies for different gram boundary volume fractions and a 50” temperature range centred at selected temperatures.. At lower temperatures it a[r] ...
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Polyvinyl pyrrolidone as a Corrosion Inhibitor for Carbon Steel in HCl
... The increase of the activation energies in the presence of inhibitors is attributed to an appreciable decrease in the adsorption process of the inhibitor on the metal surface with increa[r] ...
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Macroscopic multi-dimensional modelling of electrochemically promoted systems
... the activation energies of the catalytic reaction rates (which is reasonable since closing the circuit will in general increase the catalytic activity by affecting the activation barriers), while the ...
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Theoretical Study of Electron Transfer Process Between Fullerenes and Membrane Cells of Helicobacter pylori
... Keywords: Fullerenes; Helicobacter pylori; Electrical potential; Electron transfer process; free energies of electron transfer Get; free activation energies of electron transfer G#etn;[r] ...
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Inhibition of C38 steel corrosion in hydrochloric acid solution by 4,5 Diphenyl 1H Imidazole 2 Thiol: Gravimetric and temperature effects treatments
... Effect of temperature To investigate the mechanism of inhibition and to calculate the activation energies of the corrosion process, polarization measurements were taken at various temper[r] ...
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ABSTRACTS: April 196867-75
... Tests on the polymerisation of butadiene using RhC1, as catalyst showed the effects of catalyst concentration, different activation energies, re- quirements in emulsi[r] ...
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Thermal Decomposition and a Kinetic Study of Poly(Para Substituted Styrene)s
... The thermal decompositions of polystyrene (PS), poly(p-methyl styrene) (PMS), poly(p-bromo styrene) (PBrS), and poly(p-chloro styrene) (PClS) were investigated through thermogravimetric analysis (TGA). For this aim, ...
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THE EFFECT OF TEMPERATURE ON CROSSVEIN FORMATION IN CROSSVEINLESS-LIKE STRAINS OF DROSOPHILA MELANOGASTER
... The calculation of very high temperature cofficients and activation energies does not constitute absolute proof that the responses are due to conformational change in pro[r] ...
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Microwave Dielectric Measurements of 4-Nitroacetanilide at Different Temperatures in Carbon Tetrachloride Solution
... and activation energies have been calculated and discussed for the dilute solution of 4-Nitroacetanilide with carbon tetrachloride at various temperatures and mole fractions using standard ...
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Oscillatory behaviour during the oxidation of methane over palladium metal catalysts
... The activation energies of the reaction during the high reactivity mode, PdO, and low reactivity mode, Pd, were also ...the activation energy of this mode was found to be ...the activation ...
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Electrical response of La2/3-xLi3xTiO3 ceramics obtained by spark plasma sintering
... the activation energies (Ea) of the contribution of the grain, its contour and total conductivities are ...total activation energy is very close to the activation energy of the grain ...The ...
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An asymptotic fractional differential model of spherical flame
... of a model of initiation of a small spherical ame by a point source derived by G. Joulin. This asymptotical model for large activation energies gives the radius of the ame as the solution of a nonlinear ...
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Influence of Carbon Additions on the Dynamic Recrystallization of High Purity α Iron
... apparent activation energies of deformation, as well as the steady state average grain sizes show that they are very sensitive to carbon additions in the range of high purities, ...
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