Results 271 to 280 of about 24,143 (297)

Examination of the decomposition of CaBr2 with the method of simultaneous TG, DTG, DTA and EGA

Journal of Thermal Analysis, 1979
The thermal behaviour of anhydrous CaBr2 in N2 and O2 atmospheres containing H2O was investigated with the method of simultaneous TG, DTG, DTA and EGA (derivatograph). A method for the continuous determination of the amounts of Br2 and HBr evolved from the heated sample was elaborated in the presence of each other, and the course of the gas evolution ...
F. Paulik, J. Paulik, É. Buzágh-Gere, M. Arnold   +3 more
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On the method of bae for the determination of kinetic parameters from DTA curves

Journal of Thermal Analysis, 1980
The mathematical error in the method proposed by Bae for the determination of kinetic parameters from DTA curves has been corrected. The proposed equation does not contain thermal constants of the apparatus, and can be applied to DTA curves by an iterative method.
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Use of kinetic DTA and TG methods for compatibility tests on 2,4,6‐‐trinitrotoluene

Propellants, Explosives, Pyrotechnics, 1986
AbstractWe have investigated the suitability of thermoanalytical methods for compatibility tests on explosives and contact materials. DTA and TG curves of various materials were evaluated using two DTA and four TG methods and one DSC method. TNT was used as model substance.
M. Hemmilä, I. Nieminen, A. Kariniemi, J. Valkonen   +3 more
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Quantitative Phase Analysis in the System CaSO4.xH2O by TG-DTA Methods

1980
The quantitative determination of different components in the system CaSO4.xH2O is necessary for the production and application of technical plaster qualities. Applying the common method this analysis needs four divergently prepared samples and a period of about 200 hours. Using a simultaneous TG-DTA apparatus with water vapour atmosphere on the sample,
Winfried Hädrich, Erwin Kaisersberger
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Interaction analysis of systems involving refractory compounds by means of DTA method

Thermochimica Acta, 1985
Using DTA and other methods, the study on interaction of silicon nitride with nitrides of titanium, vanadium and zirconium carbide was carried out. The typical features of such interactions are the effect of Si3N4 dissociation stability and the formation of transient metals'-silicides.
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Change determination of total enthalpy and enthalpies of transformations by the method of quantitative DTA

Thermochimica Acta, 1985
Abstract Employing computing technique for data collection and processing in quantitative DTA makes it possible to determine the enthalpies of transformations or reactions without necessity to define peak area by the interpolation of its basic line. The DTA curve is transforied into teaperature dependance expressing the total change of heated aterial
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Applıcatıon of Mathematıcal Statıstıcs and Pattern Recognıtıon Methods to the Evaluatıon of DTA Results

1972
To reach a high degree of digitality of information obtained with the help of DTA for the detection of cograduation between DTA diagrams separate characteristics and for the selection of indications necessary to build recognition systems the DTA results analysis was made.
O. P. Mchedlov-Petrossyan, V. Y. Dubnitsky, V. L. Chernyavsky   +2 more
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A study of polypyromellitimide fibres by the DTA method

Fibre Chemistry, 1983
A. T. Kalashnik, O. I. Romanko, A. M. Shchetinin, G. G. Frenkel', Z. G. Oprits, V. Ya. Efremov, S. P. Papkov   +6 more
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A method for the determination of kinetic parameters by DTA

Thermochimica Acta, 1980
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TG/DTA-FTIR as a method for analysis of tall oil based rigid polyurethane foam decomposition gaseous products in a low oxygen environment

Polymer Degradation and Stability, 2020
Liga Avotiņa, Arturs Zarins, Ugis Cabulis   +2 more
exaly