Results 241 to 250 of about 12,735,429 (294)

A model for the interaction of two chemicals

Journal of Theoretical Biology, 2006
We describe a method for studying the interaction of two anesthetic agents, Morphine and Midazolam, acting simultaneously in the same individual. Representing the levels of the two chemicals by diffusion processes, we assume their interaction is governed by a linear combination of the separate components.
Sen, Pali, Bell, Denis
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Physico-chemical model of a protocell

Journal of Mathematical Biology, 1985
A physico-chemical model of a self-maintaining unity or protocell is constructed on the basis of reaction and diffusion processes. The surface motion of the protocell is taken into account explicitly by a so-called Stefan condition, which leads to a nonlinear feedback to the reaction and diffusion processes.
Schwegler, H., Tarumi, K., Gerstmann, B.
openaire   +3 more sources

Chemical model for oxaloacetate decarboxylase

Bioinorganic Chemistry, 1974
Abstract Spectroscopic studies on the formation of metal complexes and rate studies on the metal catalyzed decarboxylation of oxaloacetate and its esters indicate that oxaloacetate, in the presence of metal ions, decarboxylates according to the mechanism of Steinberger and Westheimer [9].
C S, Tsai, Y T, Lin, C, Reyes-Zamora, J A, Fraser   +3 more
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A model for oscillating chemical reactions

Biophysical Chemistry, 1975
A simple theoretical model for a class of oscillating chemical reactions is investigated, which is inspired by Degn's analysis of the mechanism of Belousov-Zhabotinsky reactions. Although the model involves only one auto-catalytic path, as distinct from models presented hitherto, a limit-cycle behaviour is found for the concentrations, corresponding to
K, Tomita, K, Kitahara
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Chemical models for ribozyme action

Current Opinion in Chemical Biology, 2005
Mechanistic studies of the action of catalytic ribonucleic acids, ribozymes, are highly challenging, because even a slight structural change can dramatically affect the chain folding. This, in turn, alters the binding properties of the catalytic core, making identification of the real origin of the observed influence on rate difficult.
Tuomas, Lönnberg, Harri, Lönnberg
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A Singularity Model for Chemical Reactivity

Chemistry – A European Journal, 2010
AbstractThis article proposes a model for chemical reactivity that involves singularities (“catastrophes”) in the timing of bond‐making and bond‐breaking events. The common stapler is a good mechanical analogy: As hand‐pressure is increased on the machine, the staple hardly changes its configuration until the staple suddenly bends.
Fredric M, Menger, Rafik, Karaman
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Chemical Modelling

2009
Chemical Modelling: Applications and Theory comprises critical literature reviews of molecular modelling, both theoretical and applied. Molecular modelling in this context refers to modelling the structure, properties and reactions of atoms, molecules & materials.
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Chemical models and radiation damage

Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1985
Abstract E.s.r. spectroscopy has been used in conjunction with an aqueous flow system to investigate both the metal-catalysed decomposition of hydrogen peroxide to OH* and the subsequent reactions of this radical with a variety of biomolecules. Particular emphasis is placed on the effects of pH and ligand on the FeII—H2O2 reaction and
M, Fitchett, B C, Gilbert, M, Jeff
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Chemical Reaction as a Computational Model

1990
We present a new formalism called GAMMA which relies on the chemical reaction metaphor; the only data structure is the multiset and the computation can be seen as a succession of chemical reactions consuming elements of the multiset and producing new elements according to specific rules.
Jean-Pierre Banâtre, Daniel Le Métayer
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Chemical Modelling

Chemical modelling covers a wide range of disciplines, and this book is the first stop for any chemist, materials scientist, biochemist, or molecular physicist wishing to acquaint themselves with major developments in the applications and theory of chemical modelling.
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