Results 321 to 330 of about 552,540 (353)
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Generalized monomer-monomer model for catalysis
Physical Review E, 1995We consider a Langmuir-Hinshelwood reaction on a catalytic surface with two monomer reactants, A and B whose reaction product leaves the surface: A+B\ensuremath{\rightarrow}0. We allow different adsorption and desorption rates for the two reactants. When adsorption and reaction are fast events compared to desorption (and in the absence of diffusion ...
Leonard M. Sander +2 more
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The monomer-monomer model revisited
Surface Science, 1995Abstract The monomer-monomer model for surface reactions has been investigated by means of Monte Carlo simulations performed for different kinetic regimes. The poisoning time and the width of the “chaos window” has been specified in terms of the control rate constant and the lattice size.
R. Dagonnier +4 more
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Physical Review Letters, 1970
We prove that the free energy of an arbitrary monomer-dimer system is analytic in the density and temperature for nonzero density, and hence that the system has no phase transition. This result can also be used to locate the z =e 2sh roots of the Heisenberg ferromagnet or antiferromagnet at high temperature.
Ole J. Heilmann, Elliott H. Lieb
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We prove that the free energy of an arbitrary monomer-dimer system is analytic in the density and temperature for nonzero density, and hence that the system has no phase transition. This result can also be used to locate the z =e 2sh roots of the Heisenberg ferromagnet or antiferromagnet at high temperature.
Ole J. Heilmann, Elliott H. Lieb
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Kinetics of a monomer-monomer model of heterogeneous catalysis [PDF]
Journal of Physics A: Mathematical and General, 1992 The kinetics of an irreversible monomer-monomer model of heterogeneous catalysis is examined. In this model, two reactive species, A and B, absorb and stick to single sites of a catalytic substrate. Surface reactions are assumed to occur only between dissimilar species which are nearest neighbours on the substrate.
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Complexation Features of N-Vinylsuccinimide in Monomer–Solvent and Monomer–Monomer Systems
Polymer Science, Series D, 2020The results of investigations of the complexation of N-vinylsuccinimide (VSI) in monomer–solvent and monomer–monomer systems and the effect of these processes on the kinetics of copolymerization of VSI with monometers of differing reactivity are summarized. Conditions for the synthesis of compositionally homogeneous copolymers were established.
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Direct Force Measurements of Insulin Monomer−Monomer Interactions
Biochemistry, 1998Direct measurement of the forces involved in protein-protein and protein-receptor interactions can, in principle, provide insight necessary for the advancement of structural biology, molecular biology, and the development of therapeutic proteins. The protein insulin is illustrative in this respect as the mechanisms of insulin dimer dissociation and ...
Michael D. Ward +2 more
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Effect of partitioning of monomer on the reactivities of monomers in microemulsion
Journal of Applied Polymer Science, 2002AbstractCopolymerization of styrene and 2‐hydroxyethyl methacrylate (2‐HEMA) was carried out in a microemulsion medium. The composition of the copolymers was estimated using proton 1H‐NMR. The reactivity ratios of styrene and 2‐HEMA in ternary microemulsions were observed and were considerable different from those reported for solution and bulk ...
Surekha Devi +2 more
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Cationic activated monomer polymerization of heterocyclic monomers
Progress in Polymer Science, 1999Abstract In the first part of this review the meaning of activation is discussed and selected examples of polymerizaton processes in which activation of monomer is required prior to actual propagation are presented. In some systems, activation of monomer proceeds with such a strong interaction between an activator and monomer that a new chemical ...
Stanislaw Penczek, Przemysław Kubisa
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Solvability of a model for monomer–monomer surface reactions
Nonlinear Analysis: Real World Applications, 2017Abstract A mathematical model for a monomer–monomer surface reaction is considered taking into account the surface diffusion of adsorbed particles of both reactants. The model is described by a coupled system of parabolic equations where some of them are defined in a domain and the other ones have to be solved on the domain surface. The existence and
A. Ambrazevičius, Vladas Skakauskas
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European Radiology, 1996
The 10-year-long debate regarding high-os-molar ionic vs low-osmolar nonionic contrast media has ceased. Now we are confronted with at least eight nonionic monomers and two nonionic dimers. Do these ten contrast agents differ from each other? The manufacturers say yes, but in clinical practice differences have, with a few exceptions, turned out to be ...
F. Stacul, Henrik S. Thomsen
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The 10-year-long debate regarding high-os-molar ionic vs low-osmolar nonionic contrast media has ceased. Now we are confronted with at least eight nonionic monomers and two nonionic dimers. Do these ten contrast agents differ from each other? The manufacturers say yes, but in clinical practice differences have, with a few exceptions, turned out to be ...
F. Stacul, Henrik S. Thomsen
openaire +3 more sources