scholarly journals Structural and Mechanical Evolution of Mesoporous Films with Thermal Treatment: The Case of Brij 58 Templated Titania

2017 ◽  
Vol 121 (40) ◽  
pp. 22576-22586 ◽  
Author(s):  
Diego F. Lionello ◽  
Paula Y. Steinberg ◽  
M. Mercedes Zalduendo ◽  
Galo J. A. A. Soler-Illia ◽  
Paula C. Angelomé ◽  
...  
2012 ◽  
Vol 10 (2) ◽  
pp. 368-372 ◽  
Author(s):  
Joanna Kosman ◽  
Bernard Juskowiak

AbstractOptimization studies of the procedure for peroxidase activity measurements with DNAzymes based on telomeric sequences and colorimetric indicator reactions are reported. Effect of metal cation, nature and concentration of surfactant, as well as thermal treatment of G-quadruplex sample are investigated. Nature of metal cation exhibited modest influence on the system performance. Great improvement of enzymatic activity of the telomeric quadruplexes in the presence of Brij 58 surfactant was observed. Further improvement of catalytic activity of the system based on human telomeric sequence was attained by applying a thermal treatment (heating/rapid cooling) procedure to prepare G-quadruplex/hemin complexes.


Author(s):  
R. E. Ferrell ◽  
G. G. Paulson ◽  
C. W. Walker

Selected area electron diffraction (SAD) has been used successfully to determine crystal structures, identify traces of minerals in rocks, and characterize the phases formed during thermal treatment of micron-sized particles. There is an increased interest in the method because it has the potential capability of identifying micron-sized pollutants in air and water samples. This paper is a short review of the theory behind SAD and a discussion of the sample preparation employed for the analysis of multiple component environmental samples.


Author(s):  
X. Qiu ◽  
A. K. Datye ◽  
T. T. Borek ◽  
R. T. Paine

Boron nitride derived from polymer precursors is of great interest for applications such as fibers, coatings and novel forms such as aerogels. The BN is prepared by the polymerization of functionalized borazine and thermal treatment in nitrogen at 1200°C. The BN powders obtained by this route are invariably trubostratic wherein the sheets of hexagonal BN are randomly oriented to yield the so-called turbostratic modification. Fib 1a and 1b show images of BN powder with the corresponding diffraction pattern in fig. 1c. The (0002) reflection from BN is seen as a diffuse ring with occational spots that come from crystals of BN such as those shown in fig. 1b. The (0002) lattice fringes of BN seen in these powders are the most characteristic indication of the crystallinity of the BN.


1977 ◽  
Vol 27 (1) ◽  
pp. 93-98
Author(s):  
Naim A. Fadl ◽  
Magdi Z. Sefain ◽  
Mohomed Rakha
Keyword(s):  

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