Download PDF by Amal Ali Elkordy: Applications of Calorimetry in a Wide Context - Differential

By Amal Ali Elkordy

ISBN-10: 9535109472

ISBN-13: 9789535109471

Calorimetry, as a strategy for thermal research, has quite a lot of functions which aren't merely restricted to learning the thermal characterisation (e.g. melting temperature, denaturation temperature and enthalpy swap) of small and massive drug molecules, yet also are prolonged to characterisation of gasoline, metals and oils. Differential Scanning Calorimetry is used to review the thermal behaviours of drug molecules and excipients through measuring the differential warmth move had to hold the temperature distinction among the pattern and reference cells equivalent to 0 upon heating at a managed programmed cost. Microcalorimetry is used to review the thermal transition and folding of organic macromolecules in dilute recommendations. Microcalorimetry is utilized in formula and stabilisation of healing proteins. This publication offers examine from worldwide at the functions of calorimetry on either reliable and liquid states of fabrics.

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Heat flow (a. ) Exo. Figure 20. DSC plots of the Ni70P30 powders milled for 3 and 12 h at a heating rate of 10°C/min; first (a) and second heating runs (b) [64]. 3 5 °C 220 230 240 T em p eratu re (°C ) 250 342 344 346 T e m p e ra tu re (°C ) 348 Figure 21. Enlargement of the low temperature regions of the DSC scan of the Ni70P30 powders milled for 12 h. 8. 1. Fe-Mo mixture The kinetics of Mo dissolution into the α-Fe matrix of the Fe-6Mo mixture has been deduced from the XRD analysis by following the evolution of the (110) diffraction peak intensity of the unmixed Mo as a function of milling time [26].

J. Nanoparticles 3:237-244. [7] Azzaza S, Alleg S, Moumeni H, Nemamcha AR, Rehspringer J L, Greneche J M (2006) Magnetic properties of nanocrystalline ball milled Fe and Fe50Co50 alloy. J. : Condens. Matter 18 : 7257-7272. [8] Tebib W, Alleg S, Bensebaa N, Bentayeb FZ, Suñol JJ, Greneche JM (2008) Structural characterization of nanostructured Fe-8P powder mixture. J. Nanosci. Nanotechnol. 8:2029-2036. * Corresponding Author Thermal Stability of the Nanostructured Powder Mixtures Prepared by Mechanical Alloying 45 [9] Alleg Safia, Bentayeb Fatima Zohra, Djebbari Chafia, Bessais Lotfi, Greneche Jean Marc (2008) Effect of the milling conditions on the formation of nanostructured Fe-Co powders.

Both the first and the second DSC scans of the powders milled for 100 and 125 h, respectively, display many endothermic peaks (see the inset in Fig. 14) that can be attributed to Curie temperatures of different Fe-boride phases and the residual matrix (t=125 h). 8°C can be related to the Curie temperature of Fe3B [63]. The apparent activation energy of the crystallization process in the alloys A, B and C was evaluated by the Kissinger method. 08 eV for alloys A, B and C, respectively, can be associated with grain growth process.

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Applications of Calorimetry in a Wide Context - Differential Scanning Calorimetry, Isothermal Titration Calorimetry and Microcalorimetry by Amal Ali Elkordy


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