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exothermal peak
The Raman spectra of Li2O · 7GeO2 glasses, which are heat treated under different conditions at temperatures near the temperature corresponding to the first exothermal peak in the DTA curve, are measured in the frequency range 20-1100 cm-1.
      
We have found that there is an exothermal peak on the DTA curve of nanostructured γ-Fe2O3 sample and that this peak is not repeatable.
      
The XRD microstructure analysis confirms for the first time that this exothermal peak corresponds to the structural phase transition from γ-Fe2O3 to α-Fe2O3.
      
The DTA curve showed that boric acid treated basswood has an exothermal peak at 420°C, indicating the exothermal polymerization reaction of charring.
      
DSC data show that prolonged exposure to UV light and post-thermal treatment can decrease the Tonset and Tpeak of the exothermal peak and the condensation temperature between TiOH, and increase ΔH of the exothermal peak.
      
It causes a shift of the first exothermal peak towards higher temperatures by 100° and helps the formation of temporarily stabilized structures.
      
A strong exothermal peak is observed when the material is partially or totally uncured.
      
DTA curves after grinding and cation exchange indicate an important exothermal peak at 795-870°C, its temperature depending on exchangeable cation.
      
A small exothermal peak was observed before the main melting peak at low heating rates.
      
Thus, the differential scanning calorimetry traces of a sample of low crystallinity shows an exothermal peak which is indicative of a process of release of the energy stored as defects.
      
Thus, the differential scanning calorimetry traces of a sample of low crystallinity shows an exothermal peak which is indicative of a process of release of the energy stored as defects.
      
The DSC measurements showed one main exothermal peak in the temperature range of 493-913 K.
      
Conversely, Cu-polyynides, when heated in the DSC, show a broad exothermal peak at about 243 °C.
      
The stored energy increases with the number of rotations and the maximum of the exothermal peak was shifted to higher temperatures.
      
 

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