The thermal behavior of eight dental acrylic resin powders was studied using differential scanning calorimetry (DSC). In addition, high performance liquid chromatography was performed to supplement the DSC analysis. The HPLC analysis revealed that the contents of residual monomers and benzoyl peroxide (BPO) in the powders were 0.01-0.97 mass% and 0.25-1.28 mass%, respectively. All the resin pow...

A serious limitation in the study of protein folding reactions resides in the lack of experimental methods to measure the absolute height of the free energy barrier. This is particularly unfortunate given that if folding barriers are small, as theory predicts, it might be possible to resolve folding mechanisms directly. Here we explore the performance of a recently developed method to extract f...

A fragment of the starch-binding domain (SBDF) of Aspergillus niger glucoamylase was prepared using recombinant DNA techniques, and its thermal unfolding was investigated by high-sensitivity differential scanning calorimetry (DSC). Thermal unfolding of SBDF was found to be reversible at pH 7 as expected from a DSC study of the whole enzyme molecule [Tanaka A. et al., J. Biochem., 117, 1024-1028...

In the present article, differential scanning calorimetry (DSC) and a modified T-history method have been used to study the phase changing behavior of granular composites. Further modifications and improvements of the two methods are employed to handle granular materials undergoing phase change over a temperature range. A simple procedure has been advised to obtain accurate results from the DSC...

The Benign Prostatic Hyperplasia is one of the common old age problem and alpha adrenoreceptor blockers are commonly used for symptomatic relief. Tamsulosin HCl selective 1A blocker with better tolerability profile once daily dosing advantage. present study was under taken to establish compatibility a number excipients by using thermo analytical technique viz Thermogravimetry (TG) differential ...

in this paper, the focus is on a new kind of biodegradable semi-interpenetrating polymer networks, which derived from ɛ-caprolactone, lactide, 1,4-butane diisocyanate and ethylenediamine and also its potential has been investigated in soft tissue engineering applications. the polymers were characterized by nuclear magnetic resonance (nmr) spectrometry, fourier transform infrared spectroscopy (f...

Abstract A coupled process of ultrasonic spray pyrolysis and lyophilisation was used for the synthesis dried gold nanoparticles. Two methods were applied determining their melting temperature: uniaxial microcompression differential scanning calorimetry (DSC) analysis. Uniaxial resulted in sintering nanoparticles at room temperature with an activation energy 26–32.5 J/g, which made it impossible...

The self assembly of viral proteins and nucleic acids to form stable particles, and the mechanisms by which viruses bind to and penetrate host cells, represent two key issues to understanding the basis of viral infection. Both these issues can be studied using calorimetry. The thermal stability of virus coat proteins in solution, compared with the stability of the corresponding highly structure...

The present paper reports the heating rate effect on the phase transitions of a pure liquid crystal octylcyanobiphenyl (8CB) with use of Differential Scanning Calorimetry (DSC) and Modulation Calorimetry (MC) techniques. The DSC runs were taken at various temperature ramp rates from 20 to 0.5 K/min for heating and cooling scans. Well-defined endothermic/exothermic peaks were found at the meltin...