Comparative study of the transition temperature of calf and adult cattle erythrocytes

1983 ◽  
Vol 46 (5) ◽  
pp. 289-293
Author(s):  
S�ndor Imre
Keyword(s):  
Transition Temperature ◽  
Comparative Study ◽  
Adult Cattle

First Principle Study on the Electronic Structure of Borides

2014 ◽  
Vol 1035 ◽  
pp. 392-395
Author(s):  
Yong Quan Chai
Keyword(s):  
Electronic Structure ◽  
Transition Temperature ◽  
Comparative Study ◽  
Experimental Research ◽  
Superconducting Transition Temperature ◽  
State Density ◽  
First Principle ◽  
Superconducting Transition ◽  
Structure Characteristics ◽  
Lanthanum Boride

This study utilizes accurate first principle method to conduct a comparative study on he electronic structure of multiple borides. State density of the borides is also summarized. It is found that lanthanum boride has special electronic structure characteristics. Therefore, it is presumed that there is high superconducting transition temperature (Tc) in lanthanum boride. This study is able to provide asignificant theoretical reference for further experimental research.

scholarly journals Micro- and Nanoparticulate Hydroxyapatite Powders as Fillers in Polyacrylate Bone Cement—A Comparative Study

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2736
Author(s):  
Anna Sobczyk-Guzenda ◽  
Paulina Boniecka ◽  
Anna Laska-Lesniewicz ◽  
Marcin Makowka ◽  
Hieronim Szymanowski
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Comparative Study ◽  
Surface Area ◽  
Setting Time ◽  
Charpy Impact ◽  
Cross Linking ◽  
Scanning Calorimetry ◽  
Bonding Agents

Acrylate polymer-based bone cements constitute the most popular bonding agents used in regenerative surgery. Due to their inferior biocompatibility, however, these materials are often enriched with ceramic additives including hydroxyapatite (HAp). The aim of this paper was to perform a comparative study of the acrylate cements filled with different content (3–21%) of nano- and microscale hydroxyapatite. The work concerns a comparison of times and temperatures of the cross-linking reaction, as well as morphology, glass transition temperature, and principal mechanical properties of the resulting composites. Before being used as a filler, both HAp forms were subjected to an in-depth characterization of their morphology, specific surface area, pore size distribution, and wettability as well as chemical composition and structure. For that purpose, such analytical techniques as scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, tensiometry, Brunauer–Emmett–Teller surface area analysis, differential scanning calorimetry, Shore D hardness test, and Charpy impact test were used. The results indicated a drop of cross-linking temperature and an extension of setting time with the addition of µHAp. The µHAp-filled acrylate composites were characterized by a globular surface morphology, higher glass transition temperature, and lower hardness and impact strength compared to nHAp-filled materials. This relationship was evident at higher nHAp concentrations.

Effectiveness of two thermal activated orthodontic archwire sequences based on transition temperature range during alignment: A randomized non-controlled comparative study

2020 ◽  
Vol 18 (4) ◽  
pp. 706-713
Author(s):  
Júlio de Araújo Gurgel ◽  
Célia Regina Maio Pinzan-Vercelino ◽  
Meire Coelho Ferreira ◽  
Daniella de Oliveira da Silva ◽  
Carlos Flores-Mir ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Comparative Study ◽  
Temperature Range

Comparative Study of PAA/Alumina Composites with PAA/Alumina Nano Composites and Thermal Analysis of PAA/Alumina Nano Composites with Doping of Metals

2013 ◽  
Vol 209 ◽  
pp. 121-124
Author(s):  
Rahul K. Desai ◽  
Laxmi Tomar ◽  
B.S. Chakrabarty
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Acrylic Acid ◽  
Comparative Study ◽  
Polyacrylic Acid ◽  
Nano Particles ◽  
Nano Composites ◽  
Preparation Methods ◽  
Alumina Composites

The purpose of this work is to provide a comparative study of polyacrylic acid alumina (PAA/Al2O3) bulk composites with PAA/Al2O3 nano composites. This work also provides a study in the variation of glass transition temperature due to the doping of metal. Alumina nano particles were prepared using hydrothermal method. This sample was doped with Cu. Polyacrylic acid alumina nano composites were prepared using two different methods. The alumina samples were added to acrylic acid. In the first method the mixtures of acrylic acid and alumina samples were heated in oven. In the second method the same mixtures were irradiated with microwaves. The samples prepared were allowed to cool down and dried. Also the alumina bulk particles were also dispersed in acrylic acid and the similar procedure was carried out. The effect of preparation methods on the glass transition temperature of PAA/Al2O3 and PAA/Al2O3 nano composites have been studied. The glass transition temperatures Tg were determined using DSC analysis.

Comparative study of the dynamic glass transition temperature by DMA and TMDSC

2010 ◽  
Vol 29 (8) ◽  
pp. 1002-1006 ◽  
Author(s):  
C.A. Gracia-Fernández ◽  
S. Gómez-Barreiro ◽  
J. López-Beceiro ◽  
J. Tarrío Saavedra ◽  
S. Naya ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Comparative Study
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