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Interpretation of crystallization induction periods
Journal of Colloid and Interface Science, 1988The crystallization induction period tind, is interpreted as the sum of the time for critical nucleus formation, tn, and growth to detectable size, tg. Expressions describing the dependence of tind on supersaturation are derived for the cases tn ⪢ tg, tn ≈ tg, and tn ⪡ tg, taking into account different possible nucleation and growth mechanisms, and ...
Otakar Söhnel, John W Mullin
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Journal of Thermal Analysis and Calorimetry, 2006
Methods for kinetic description of induction periods, based on the single-step kinetics approximation and various expressions of the temperature functions, are presented. The formulas for evaluation of both isothermal and non-isothermal lengths of induction periods are derived.
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Methods for kinetic description of induction periods, based on the single-step kinetics approximation and various expressions of the temperature functions, are presented. The formulas for evaluation of both isothermal and non-isothermal lengths of induction periods are derived.
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American Journal of Epidemiology, 1981
Induction and latent periods are distinguishable concepts referring respectively to the period between causal action and disease initiation, and the period between disease initiation and detection. A disease cannot be characterized as having a long or short induction period, except in relation to a specific etiologic component.
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Induction and latent periods are distinguishable concepts referring respectively to the period between causal action and disease initiation, and the period between disease initiation and detection. A disease cannot be characterized as having a long or short induction period, except in relation to a specific etiologic component.
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Fluorescence studies of the photosynthetic induction period
Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects, 1964Abstract The fluorescence intensity of green leaves at the beginning of an irradiation period is lower than at the subsequent steady state of illumination. This is interpreted in terms of the adsorption in the dark of plant metabolites at an active chlorophyll surface and of their photochemical reduction in the first few seconds of strong irradiation.
J L, ROSENBERG, T, BIGAT, S, DEJAEGERE
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Induction Periods in Reactions of N-Halogenimides
Nature, 1951N-HALOGENIMIDES have been extensively used in preparative organic chemistry during the past few years1. We have attempted to elucidate the mechanism of the reaction of N-chlorosuccinimide on toluene, in which the simplicity of the reagents and products appeared to be particularly suitable for such a study.
P, GOLDFINGER +2 more
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Video luminescent barometry - The induction period
31st Aerospace Sciences Meeting, 1993Video monitoring of oxygen quenching of the photoluminescence of platinum octaethylporphyrin (PtOEP) in silicone polymer resin may be used to measure pressure distribution over an airfoil. A continuous increase of the luminescence intensity of PtOEP on exposure to the exciting light is known as the induction effect.
RORY UIBEL +4 more
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The Induction Period in Physical Development
The Journal of Photographic Science, 1976AbstractThe early stages of pure physical development were studied under conditions of constant pAg and in the presence of additives known to influence the "induction period” in chemical development. It appears that the rate of pure physical development is markedly dependent on the nucleus charge and on the charge on the developing agent, at least for ...
G.I.P. Levenson, P.J.P. Twist
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