Authors:N. Obradović, A. Terzić, Lj. Pavlović, S. Filipović, and V. Pavlović
refractoriness and refractoriness under load are high, as expected.
Well-designed concrete attains strength only after hydration of cement [ 6 ]. Due to a poor crystallinity of the hydration
Authors:J. J. H. Lancastre, F. M. A. Margaça, L. M. Ferreira, A. N. Falcão, I. M. Miranda Salvado, M. S. M. S. Nabiça, M. H. V. Fernandes, and L. Almásy
differentialthermalanalysis techniques at Aveiro University. The thermogravimetric data were collected using a Setaram equipment, model SETSYS, in the 25–600 °C range, at a heating rate of 10 °C min −1 , in air. Differentialthermalanalysis data were
the differentialthermalanalysis (DTA) or differential scanning calorimetry (DSC).
Among the chalcogenide systems, selenium and selenium based glassy alloys have been intensively studied due to their wide technical applications, especially in
Thermal analysis (TA), e.g., thermogravimetry (TG), differentialthermalanalysis (DTA), and differential scanning calorimetry (DSC) have been used widely for scientific and practical purposes [ 1 , 2 ]. These
Authors:Zuzana Jakubíková, Marek Liška, Alfonz Plško, and Jana Pagáčová
—Chemical oxygen demand test [ 7 ]. The obtained value was COD = 19.1 mg/g.
Differentialthermalanalysis (DTA) measurements were performed on DERIVATOGRAPH MOM Budapest equipped with the PC A-D data collection, using the heating rate of 10 °C/min. and the
Authors:Masoud Nazarian-Samani, Ali Reza Kamali, Mahboobeh Nazarian-Samani, Roohallah Mobarra, and Saber Naserifar
Ar flow. About 80–100 mg of the 10 h-milled powder was subjected to differentialthermalanalysis (DTA) at different selected heating rates (5, 10, 15, 20, and 50 °C min −1 ). The temperature covered in the DTA ranged from room temperature to 1200 °C
systematically studied. The grown crystals were characterized by differentialthermalanalysis (DTA)/thermogravimetric (TG) analysis, dielectric measurement, DC conductivity measurement, and surface etching study.
Authors:P. Budrugeac, Andrei Cucos, and Lucreţia Miu
patrimonial objects made from leathers as well as the methods to put in evidence the impact of environmental factors on them. Among these techniques, the thermal analysis methods, especially thermogravimetry (TG), differentialthermalanalysis (DTA
Ionic chelate complexes of kojic acid(I) and hafnium(IV) of the type [(η5-C5H5)2HfL]+[MCl3]– (II)[HL=kojic acid; M=Zn(II), Cd(II), Hg(II), Cu(II)] have been synthesised and characterised by spectral studies (IR, UV, 1H NMR and 13CNMR). Thermogravimetric (TG) and differential thermal analytical (DTA) studies have been carried out for these complexes
and from the TG curves, the order and apparent activation energy for the thermal decomposition reactions have been elucidated.
The various thermal studies have been correlated with some structural aspects of the complexes concerned. From DTA curves,
the heat of reaction has been calculated.
Authors:M. Wesołowski, E. Kosecka, J. Erecińska, and K. Kobyłczyk
The thermal decomposition of several sulfonamides and potassium salts of sulfonamides was investigated. The analyses were
performed using a derivatograph in an air atmosphere, sample sizes were from 50 to 200 mg and heating rate from 2.5 to 20
K min-1. It has been established, that the thermal destruction of studied compounds occurs via three stages with formation of potassium
carbonate as a final product of the complete combustion of potassium salts of sulfonamides. The temperature ranges, in which
the analyzed compounds undergo thermal transformations were established. For evaluation of the results the principal component
analysis (PCA) was applied. By this method the influence of the specific functional groups on the thermal decomposition of
sulfonamides and potassium salts of sulfonamides was determined. It has also been recognized, that better discrimination among
the analyzed compounds is obtained for the data set of the DTA.