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Anthropology of Religious Conversion . Oxford: Rowman&Littlefield Publishers, Inc. The Anthropology of Religious Conversion 2003 Bushkovitch , Paul 1992: Religion and Society in Russia: The

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Ivanyi P. Finite element mesh conversion based on regular expressions, Advances in Engineering Software , Vol. 51, 2012, pp. 20–39. Ivanyi P. Finite element mesh conversion based on

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Conversion of phosphogypsum to potassium sulfate

Part I. The effect of temperature on the solubility of calcium sulfate in concentrated aqueous chloride solutions

Journal of Thermal Analysis and Calorimetry
Authors: A. Aagli, N. Tamer, A. Atbir, L. Boukbir, and M. El Hadek

Solubility of calcium sulfate in concentrated aqueous chloride solutions is of particular significance in chloride hydrometallurgy and various crystallization processes, such as the production of potassium sulfate from phosphogypsum and potassium chloride. This paper examines an example of the second type of application in which gypsum and potassium chloride are reacted to form K2SO4. The solubility of phosphogypsum in aqueous solutions of KCl, HCl, and mixtures of both has first been measured at various temperatures and concentrations. The parameters investigated are HCl concentration up to 6M, KCl concentration up to 180 g L-1 and temperature from 25 to 80°C. In addition, the influence of co-existing chloride salts, such as (HCl+KCl), on the solubility of calcium sulfate is estimated from 25 to 80°C. The solubility increases obviously with the temperature increment as it does initially with acid concentration, reaching a maximum of about 3M HCl, 130 g L-1 KCl and then drops. At the same time, the solubility of CaSO4·2H2O decreases with increasing KCl concentration.

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disability due to conversion disorder: a prospective control group study. Journal of Neurology, Neurosurgery and Clinical Psychiatry , 63: 83–88. Binzer, N., Kullgren, G. (1998): Motor conversion disorder. Psychosomatics , 39: 519

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Reaction Kinetics, Mechanisms and Catalysis
Authors: Kenichiro Inoue, Kiyomi Okabe, Megumu Inaba, Isao Takahara, and Kazuhisa Murata

biomass-derived materials such as bio-ethanol for the problems of exhaustion of petroleum resources and global warming. Therefore, propylene production from bio-ethanol is highly desirable. Processes for the conversion of methanol to olefins (MTO) are well

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Photosynthetic energy conversion in the diatom Phaeodactylum tricornutum

Measuring by calorimetry, oxygen evolution and pulse-amplitude modulated fluorescence

Journal of Thermal Analysis and Calorimetry
Authors: Steffen Oroszi, Torsten Jakob, Christian Wilhelm, Hauke Harms, and Thomas Maskow

a sample in the presence of DTT (0.5 mM) Discussion The aim of this study was to compare the photosynthetic energy conversion in the diatom P. tricornutum measured by photocalorimetry and by

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Introduction Iso-conversional methods are used for non-isothermal analysis, in which the transformation rate at a constant extent of conversion is only a function of temperature as suggested by Vyazovkin et al. [ 1 – 4 ] and

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method, which can not detect the complex nature of the solid-state reaction, has been replaced by multiple scan method at different heating rates using iso-conversional and iso-temperature calculation procedures [ 12 – 14 ]. Among the iso-conversional

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Journal of Thermal Analysis and Calorimetry
Authors: S. X. S. Costa, M. R. Galvão, D. P. Jacomassi, M. I. B. Bernardi, A. C. Hernandes, A. N. de Souza Rastelli, and M. F. Andrade

employed, as well as to the composite resin composition and degree of conversion [ 6 ]. Composite resins are set via exposure to light of a certain wavelength and an intensity that initiates the generation of free radicals that propagate

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Abstract  

Characterization of the solid-state form (hydrate or polymorph) of a pharmaceutical active is a key scientific and regulatory requirement during development of and prior to seeking approval for marketing of the drug product. A variety of analytical methods are available to perform this task. By nature of the fundamental information it provides, TG-DTA offers advantages over other methods in regards to monitoring and quantitation of hydration state changes. In a single experiment with only a few milligrams of sample, TG-DTA perceives minor changes in phase, quantitates total water content and percent conversion, and illustrates hydrate type. All of this is accomplished without the necessity of generating time-consuming standard curves representing the differing ratios of hydrated to anhydrous forms. This study describes the use of TG-DTA to monitor and quantitate humidity induced solid–solid phase conversion of nitrofurantoin and risedronate. Percent conversion was qualitatively observed by both TG and DTA signals and quantitated by the TG.

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