Results 201 to 210 of about 4,152 (225)

Specific Autocatalysis in Diastereoisomeric Replicators

Organic Letters, 2005
Two diastereoisomeric cycloadducts are capable of accelerating their own formation through the assembly of catalytic ternary complexes. The two cycloadducts do not have any measurable catalytic effect on the rate of formation of their diastereoisomer. [structure: see text]
Eleftherios, Kassianidis, Russell J, Pearson, Douglas, Philp   +2 more
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New Aspects of Soai's Asymmetric Autocatalysis

Angewandte Chemie International Edition, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Joachim, Podlech, Timo, Gehring
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AUTOCATALYSIS AND GROWTH

Annals of Applied Biology, 1928
Summary.The autocatalytic equation in the form log x/(a ‐ x) =K (t‐t1) may be used to express closely the changes which occur during growth.The constant k, as given by K = ka, is not a constant which is independent of environmental conditions.The changes in growth may be more suitably expressed by means of the equation dx/dt= (k1+ k2x) (a ‐ x). In this
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Asymmetric Amplification and Autocatalysis

ChemInform, 2001
AbstractFor Abstract see ChemInform Abstract in Full Text.
Kenso Soal, Takanori Shibata
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Water and Autocatalysis in Living Matter

Electromagnetic Biology and Medicine, 2009
Water plays a fundamental role in living organisms. Liquid water includes coherence domains (CD) where all molecules oscillate in unison in tune with a self-trapped electromagnetic field at a well-defined frequency. The coherent oscillations produce an ensemble of quasi-free electrons, able to collect noise energy from the environment and transform it ...
Emilio, Del Giudice, Alberto, Tedeschi
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Remarks on Autocatalysis and Autopoiesis

Annals of the New York Academy of Sciences, 2000
Abstract: The notions of collective autocatalysis and of autopoiesis are clearly related; equally clearly, they are not quite the same. The purpose of this paper is to try to clarify the relationship. Specifically I suggest that autopoiesis can be at least roughly characterized as collective autocatalysis plus spatial individuation.
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Autocatalysis in a biological system

Journal of Theoretical Biology, 1971
Abstract A biochemical scheme is analyzed in which the synthesis of a precursor is catalyzed by its product. The scheme shows hysteresis in the steady state concentrations of the intermediates only if the outflow from the system is by reaction with a reversible enzyme. The construction of open systems to correspond to an in vivo environment and the
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Accelerating fronts in autocatalysis

Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2000
In this paper the authors consider the system of reaction-diffusion equations modelling an autocatalytic reaction, \[ \psi_t = \psi_{xx} + (1-\psi)f(\theta), \qquad \theta_t = l \theta_{xx} + (1-\psi)f(\theta) \] on the real line, \(t \geq 0\), where \(\theta(x,t)\) is the concentration of the autocatalyst, \(1-\psi(x,t)\) is the concentration of the ...
Malham, S. J. A., Oliver, M.
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Autocatalysis in bainite transformations

Materials Science and Engineering: A, 2000
The objective of the study is to provide a better account of the autocatalysis phenomenon in bainite transformation in steels. The phenomenon of autocatalysis is related to the nucleation of ferrite subunits at the surfaces of bainite sheaves during transformation. The analytical forms of the effective nucleation rate are derived based on two different
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Vincent van Gogh’s Autocatalysis

2020
RNA is a fundamental molecule that codes for protein and controls gene expression, playing a fundamental role in many biological processes.
Amelia Palermo, Lorenzo Casalino, Giulia Palermo   +2 more
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