Thermal effects of shoulder electrothermal arthroscopic capsulorrhaphy monitored by differential scanning calorimetry—A preliminary study

2007 ◽  
Vol 464 (1-2) ◽  
pp. 78-82 ◽  
Author(s):  
G. Bognár ◽  
I. Szabó ◽  
L. Bálint ◽  
B. Hepp ◽  
L. Kereskai ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Thermal Effects ◽  
Scanning Calorimetry ◽  
Preliminary Study

Study of thermal properties of Ga0.5In1.5Se3 by differential scanning calorimetry

2021 ◽  
pp. 2150407
Author(s):  
S. I. Ibrahimova
Keyword(s):  
Crystal Structure ◽  
Differential Scanning Calorimetry ◽  
Thermal Properties ◽  
Thermal Effects ◽  
Room Temperature ◽  
Structural Studies ◽  
X Ray Diffraction ◽  
Hexagonal Symmetry ◽  
Scanning Calorimetry ◽  
X Ray

The crystal structure and thermal properties of the [Formula: see text] compound have been investigated. Structural studies were performed by X-ray diffraction at room temperature. The crystal structure of this compound was found to correspond to the hexagonal symmetry of the space group P61. Thermal properties were studied using a differential scanning calorimetry (DSC). It was found in the temperature range [Formula: see text] that thermal effects occur at temperatures [Formula: see text] and [Formula: see text]. The thermodynamic parameters of these effects are calculated.

The Thermal Processes within Polyethylene in Mixtures with a High Content of Inorganic Components after Plastic Deformation under High Pressure

2018 ◽  
Vol 45 (3) ◽  
pp. 79-86 ◽  
Author(s):  
V.A. Zhorin ◽  
M.R. Kiselev
Keyword(s):  
Differential Scanning Calorimetry ◽  
Plastic Deformation ◽  
High Pressure ◽  
Thermal Effects ◽  
Germanium Dioxide ◽  
Thermal Processes ◽  
Scanning Calorimetry ◽  
Interphase Interaction ◽  
Enthalpy Of Melting ◽  
Inorganic Components

Mixtures of polyethylene and 80% germanium dioxide, magnesium, magnesium oxide, and sodium chloride were subjected to plastic deformation under a pressure of 0.5–4.0 GPa, and were then investigated by differential scanning calorimetry. The enthalpy of melting of the polymer in certain mixtures reached 300 J/g. On thermograms of deformed mixtures, exothermic processes were observed. The observed thermal effects are possibly due to interphase interaction at the phase boundary.

Interpretation of Thermal Effects in Differential Scanning Calorimetry Study of Asphalts

2018 ◽  
Vol 58 (8) ◽  
pp. 593-598 ◽  
Author(s):  
I. N. Frolov ◽  
T. N. Yusupova ◽  
M. A. Ziganshin ◽  
E. S. Okhotnikova ◽  
A. A. Firsin
Keyword(s):  
Differential Scanning Calorimetry ◽  
Thermal Effects ◽  
Scanning Calorimetry ◽  
Differential Scanning Calorimetry Study

The study of bitumen by differential scanning calorimetry: The interpretation of thermal effects

2019 ◽  
Vol 37 (4) ◽  
pp. 417-424 ◽  
Author(s):  
Igor N. Frolov ◽  
Ekaterina S. Okhotnikova ◽  
Marat A. Ziganshin ◽  
Tatyana N. Yusupova ◽  
Alexey A. Firsin
Keyword(s):  
Differential Scanning Calorimetry ◽  
Thermal Effects ◽  
Scanning Calorimetry

scholarly journals Differential Scanning Calorimetry as a New Method to Evaluate the Effectiveness of Rejuvenating Agents in Bitumens

2021 ◽  
Vol 11 (14) ◽  
pp. 6528
Author(s):  
Paolino Caputo ◽  
Cesare Oliviero Rossi
Keyword(s):  
Differential Scanning Calorimetry ◽  
Material Characterization ◽  
Aging Process ◽  
A Priori ◽  
Scanning Calorimetry ◽  
Oven Test ◽  
Road Pavement ◽  
Self Consistent ◽  
Preliminary Study ◽  
Fluxing Agent

To date, few methods allow distinguishing a fluxing effect of an additive for bitumen from a regenerating effect. This research aims at identifying a method to accurately establish whether an oxidized bitumen has been regenerated or has simply been fluxed by a softener. Oxidized bitumens, simulating the aging process that results in road pavement lifetime, were prepared by the Rolling thin film oven test (RTFOT) procedure for 225 min and the Pressure Aging Vessel (PAV) procedure. Their asphaltene parts were extracted and analyzed by calorimetry (Differential Scanning Calorimetry DSC), and the results were compared with the presence and absence of a fluxing agent and real rejuvenators. The self-consistent results showed that the thermal properties of the asphaltene fractions is a sound probe to monitor the effect of rejuvenation clearly distinguishable from the mere fluxing effect. This preliminary study might allow the creation of standard protocols capable of identifying a priori the rejuvenating effect of an additive in the future. Furthermore, given the widespread use of calorimetry for the characterization, it tends to become a widely accessible and useful tool for this purpose in material characterization laboratories.

scholarly journals DIFFERENTIAL SCANNING CALORIMETRY OF LIQUID VEGETABLE

2020 ◽  
pp. 157-164
Author(s):  
Igor' Aleksandrovich Saranov ◽  
Oleg Borisovich Rudakov ◽  
Konstantin Konstantinovich Polyansky ◽  
Natal'ya Leonidovna Kleymenova ◽  
Aleksey Valer'yevich Vetrov
Keyword(s):  
Differential Scanning Calorimetry ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Vegetable Oils ◽  
Thermal Effects ◽  
Scanning Calorimetry ◽  
Total Proportion ◽  
Dsc Thermograms

The thermophysical properties of vegetable oils were studied by differential scanning calorimetry method was used to study the fatty acid composition of vegetable oils liquid at room temperature, such as amaranth (Amaránthus), corn (Zea mays), flax (Línum usitatíssimum), sunflower (Helianthus), rape (Brusss napor), milk thistle (Sílybum mariánum), saffron milk cap (Camelina sativa) and pumpkin (Cucurbita pepo). The temperatures of the endothermic peak maxima and their area on the DSC thermograms of these oils were established as characteristic thermal effects. The interconnection between thermal effects and fatty acid composition are revealed. On the melting curves of liquid vegetable oils, up to 5 endothermic peaks of different intensities were selected in the ranges -80÷-55 °C, -40÷-15 °C, -25÷-8 °C, -19÷+6 °C and -10÷+4 °C. The coordinates of the maxima of these peaks (Ti) and their area (Si) significantly correlate with the content (Wi,%) in the oils, primarily oleic, linoleic and linolenic acids, the total proportion of which in oils is from 75 to 92%. Using the DSC thermograms of rapeseed oil as an example, it is shown that the program separation of DSC peaks allows a multiple increase in the number of analytical signals, an increase in the reliability of identification of the fat phase, and identification of the main fractions of triglycerides. DSC as a method for identifying vegetable oils using modern thermal analysis instruments is simple to sample, has good reproducibility and can be an independent method for identifying and controlling the quality of vegetable oils.

Thermal Stability of N-Heterocycle-Stabilized Iodanes – A Systematic Investigation

2019 ◽  
Author(s):  
Andreas Boelke ◽  
Yulia A. Vlasenko ◽  
Mekhman S. Yusubov ◽  
Boris Nachtsheim ◽  
Pavel Postnikov
Keyword(s):  
Thermal Stability ◽  
Differential Scanning Calorimetry ◽  
Thermogravimetric Analysis ◽  
Systematic Investigation ◽  
Scanning Calorimetry ◽  
Thermal Stability Of

<p>The thermal stability of pseudocyclic and cyclic <i>N</i>-heterocycle-stabilized (hydroxy)aryl- and mesityl(aryl)-l<sup>3</sup>-iodanes (NHIs) through thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) is investigated. NHIs bearing <i>N</i>-heterocycles with a high N/C-ratio such as triazoles show among the lowest descomposition temperatures and the highest decomposition energies. A comparison of NHIs with known (pseudo)cyclic benziodoxolones is made and we further correlated their thermal stability with reactivity in a model oxygenation. </p>

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