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Showing 1 to 20 of 356 for “"Rate Constant"”.
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Robust Biased Brownian Dynamics for Rate Constant Calculation
… probability is required to calculate the rate constant of a diffusion-dominated reaction. Due to the complicated geometry and potentially high dimension of the reaction probability problem, it is usually solved by Brownian dynamics simulations, which is also known as a random walk or path …
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SEMICLASSICAL APPROACHES FOR RATE CONSTANT CALCULATIONS AND VIBRATIONAL SPECTROSCOPY
… di spettri di molecole organiche monoidrate. Viene poi proposta una nuova metodologia semiclassica QM/MM per calcoli spettroscopici di molecole biologiche in soluzione. Il nostro approccio di dinamica quantistica semiclassica, combinato con una rappresentazione QM/MM polarizzabile della …
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Effects of Surface Roughness on the Indoor Particle Deposition Rate Constant
… of this work was to quantify the deposition rate constants of size-classified particles on typical indoor surface materials as affected by the degree of surface roughness. The experiments were conducted in a small-scale acrylic chamber. The particle size range was from 0.723 to 5.048 £gm with …
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A flowing afterglow source of NF(b¹(sigma)+): quenching rate constant measurements
Call number: LD2668 .T4 1984 L56
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The effect of ultrasonic irradiation on the specific reaction rate constant in the acid hydrolysis of ethyl acetate
… ultrasonic irradiation on the specific reaction rate of the hydrolysis of an aqueous solution of ethyl acetate in the presence of hydrochloric acid as the catalyst. The commercially obtained ultrasonic generator was limited to four frequencies - namely, 400, 700, 1000, and 1500 kilocycles. Two …
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A Determination of the Rate Constant and Products for the Reaction of the Chlorine Oxide Radical With the Hydroperoxyl Radical
Made available in DSpace on 2014-12-13T20:10:49Z (GMT). No. of bitstreams: 1 8009083.pdf: 4294480 bytes, checksum: 5ed6dc3f6b77a8d796caf7339d23b0eb (MD5) Previous issue date: 1979
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The role of the apparent rate constant of cross-bridge transition from the strong binding state (G app ) in skeletal muscle force production
… This cycle can be characterized by the apparent rate constants for transition into the SB state (fapp) and returning to the WB state (gapp), Increases in XB force can be accounted for by an increase in fapp a decrease in gapp., or both. While effort towards understanding XB force regulation has …
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Cytometry of Reaction Rate Constant (Crrc): Optimization of the Technique and Development of a Novel Protocol to Assess Cell Population Heterogeneity Based on Aldh1a1 Activity in Vitro
Cytometry of Reaction Rate Constant (CRRC) is a novel analytical technique which aims to study cellular heterogeneity based on the activity of enzymatic reactions. In the past, CRRC was able to assess cellular heterogeneity in vitro by investigating the activity of ABC-transporter enzymes. However, …
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A 59-Cobalt NMR Investigation of the Hydrogen/Deuterium Exchange Kinetics in Cobalt(III) Complexes
… are being investigated. In the presence of deuterated solvents, (e.g. D2 0 and CH3CH20D) the amine hydrogens in the complexes are exchanged for deuteriums. For the hexaamminecobalt(III) ion, 19 isotopmers (H18D0 to HOD 18) are possible. For the tris(ethylenediammine)cobalt(III) ion, 13 isotopmers …
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Primary Photoproducts and the Mechanism of Ligand Substitution in the Photochemistry of Dinuclear Metal Carbonyls
… for both primary photoproducts. The second-order rate constant for radical recombination was measured and determined to be (8.0 (+OR-) 0.6) x 10('8) M('-1) s('-1). The second-order rate constant for CO recapture was found to be (4.4 (+OR-) 0.4) x 10('3) M('-1) s('-1).
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Photoconductivity studies of the ferrocyanide ion under high pressure
… yielded a relative value of the bimolecular rate-constant for the reverse reaction. Kinetic measurements were carried out on dilute solutions of potassium rrocyanide in pure water, and in 20% ethanol. The photocurrent yield in aqueous solution was dependent upon secondary chemical equilibria …
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ΜΕΛΕΤΗ ΤΗΣ ΒΙΟΙΣΟΔΥΝΑΜΙΑΣ ΙΔΙΟΣΚΕΥΑΣΜΑΤΩΝ ΑΣΠΙΡΙΝΗΣ ΠΟΥ ΚΥΚΛΟΦΟΡΟΥΝ ΣΤΗΝ ΕΛΛΑΔΑ
… THE COMPARATIVE STUDY WAS BASED ARE: ABSORPTION RATE CONSTANT (KA), ELIMINATION RATE CONSTANT (KE), AREA UNDER THE CURVE ([AUC] ), MAXIMUM CONCENTRATION (T MAX), ABSORPTION HALF LIFE (T 1/2/ KA) AND ELIMINATION HALF LIFE (T 1/2 /KE). IT WAS PROVED THAT (1) NONE OF THE ABOVE PRODUCTS EXHIBITS …
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Calcium carbonate precipitation kinetics
… Nancollas and Reddy is presented to describe the rate of calcium removed from water in CacO3; precipitation. The mass of CaCO3; precipitated at any moment was obtained by monitoring pH and utilizing this in the equilibrium equations for the Ca - H2CO3 system including ion pairing and ionic …
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A Kinetic Investigation of the Mechanism of Muscle Contraction with a Series of Nucleotides
… use other nucleoside triphosphates (NTP) as substrates. In this work, the dependence of rate and equilibrium constants of the various steps in the muscle contraction mechanism upon nucleotide structure was investigated to unravel the dependence of the mechanical properties of the muscle upon …
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The reaction of ortho-positronium with nitroaromatics via complex formation
… be a necessary condition for this behavior. The rate constant for each of these reactions was measured in suitable solvents over a wide temperature range, 200-500°K. Distinct departure from the Arrhenius law was found. In general, the rate constant increased linearly with increasing temperature …
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Hydrodynamic studies and mathematical modeling of fine coal flotation
… fluid mechanics. This analysis has allowed the rate constant for flotation to be evaluated as functions of bubble sine, particle size, flotation column diameter, air flow rate and critical film rupture thickness. The last parameter is a measure of the hydrophobicity of the particles to be …
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A bubble-particle interaction model for flotation combining hydrodynamic and surface forces
… pulp is controlled by (i) the flotation rate constant and (ii) the residence time distribution of the particles. In the present work, theoretical and experimental analyses have been carried out to develop methods for predicting these parameters from first principles considerations. In …
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Internal pressure's role in the selectivity of the bromine radical
The results of our studies demonstrate a link between selectivity in free radical brominations and the internal pressure of solvent. The study encompassed l8 solvents and/or mixtures over which the rate constant ratio for SH2 ring opening of cyclopropylbenzene (kC) vs hydrogen abstraction from …
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Monte Carlo simulation of the radiolysis of water by fast neutrons at elevated temperatures up to 350°C
… from the first four neutron collisions that generate mostly ejected protons with energies of ~1.264, 0.465, 0.171, and 0.063 MeV, which had, at 25 °C, mean linear energy transfers (LETs) of ~22, 43, 69, and 76 keV/[micro]m, respectively. In this work, we simply neglected the radiation effects due …
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