منابع مشابه
Vapor pressure determination by thermogravimetry
A method for measuring the vapor pressures of a wide range of materials using a conventional thermobalance and standard sample holders is described. The equipment is calibrated using pure reference materials of known vapor pressure and exploiting the relationship between volatilization rate and vapor pressure based on the Langmuir equation for free evaporation. Enthalpies of vaporization and su...
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A new technique, called modulated thermogravimetry, is introduced as a tool for obtaining continuous kinetic information for decomposition and volatilization reactions. The approach makes use of an oscillatory temperature program to obtain kinetic parameters during a mass loss. MTGA may be used under quasi-isothermal conditions to observe a single mass loss or may be combined with linear heati...
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The high T, superconducting oxide YBa&usO, --x reacts with hydrogen gas. Thermogravimetric, X-ray and neutron scattering experiments allow us to propose a two-step type of hydrogen bonding. Firstly, a few hydrogen atoms fill some oxygen vacancies and may favourably modify the electron state, giving rise to a slight increase in the critical temperature. Secondly, after a prolonged heating period...
متن کاملCombined Economic Dispatch and Reliability in Power System by Using PSO-SIF Algorithm
Reliability investigation has always been one of the most important issues in power systems planning. The outages rate in power system reflects the fact that more attentions should be paid on reliability indices to supply consumers with uninterrupted power. Using reliability indices in economic dispatch problem may lead to the system load demand with high reliability and low probability of powe...
متن کاملNonisothermal Kinetics Analysis of the Dehydration of Ziprasidone Hydrochloride Monohydrate by Thermogravimetry
In the current work the kinetics of dehydration of ziprasidone hydrochloride monohydrate was studied by nonisothermal thermogravimetry. Ziprasidone hydrochloride monohydrate was heated from 30 to 150° with a heating rate of 5° per min under nitrogen gas atmosphere and weight loss data were collected. Powder X-ray difraction was used to characterize the solid before and after dehydration. The we...
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ژورنال
عنوان ژورنال: TANSO
سال: 2000
ISSN: 1884-5495,0371-5345
DOI: 10.7209/tanso.2000.441