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Online since: March 2005
Authors: Bussarin Ksapabutr, Sujitra Wongkasemjit, Erdogan Gulari
Its presence of ethylene glycolate ligands is hydrolytically stable, thus giving more controllable chemistry and minimizing special handling requirement.
The increase in G' indicated a development of the network structure with a highly elastic behavior.
The decrease in intensity of Zr-O-C band in tris(sodium glycozirconate) was accompanied with the increase of new band of Zr-O-Zr bond leading to the formation of network structure. 4.2 Heated gels DTA showed an exothermic peak around 500°C which corresponded to the crystallization of the material, but the temperature program of the DTA scan was a continuous ramp with no hold, unlike the calcination procedure.
Online since: November 2011
Authors: Hui Long Xia, Zhi Jun Yan, Bin Yu
The structure of TS is shown in Fig. 1.
Fig. 1 Chemical structure of tea saponin In our previous study, we investigated the potential of TS to enhance the uptake of polychlorinated biphenyls (PCBs) and Cd by Zea Mays L. and Saccharum officinarum L.
Nowack, Environmental chemistry of aminopolycarboxylate chelating agents, Environ.
Online since: October 2015
Authors: Petr Kurka, Bohuslav Mašek, Hana Jirková, Ivan Vorel
After stepwise optimization of processing parameters, products with martensitic structure and a small amount of bainite were obtained.
The strength levels just below 2000 MPa and elongation values A3=18 % achieved by a simple process in complex-shaped parts made of steel with cost-efficient chemistry can be considered a promising outcome.
Online since: March 2020
Authors: S.D. Polischuk, Yu.A. Stekolnikov, D.G. Churilov, I.A. Uspeunskiy, I.A. Yukhin, I.S. Arapov, N.V. Byshov, S.N. Borychev
An electrochemical cell can be described as a system by a differential equation, the form of which is determined by its internal structure, which varies with electrolysis conditions.
Chroming on non-stationary modes allows the most effective influence on the structure and physical-mechanical properties of coatings.
At higher or lower sulfate concentrations in the chroming electrolyte, the deposition process is unstable, which indicates a significant change in the film structure with a change in the sulfate concentration.
Structure of chrome coating Mathematical modeling of the chroming process was performed from a low-concentration electrolyte, where current variables (X1) in the range 60-80 A / dm2 and temperature (X2) (60 ... 80 °С) were taken as variables.
Chemistry 83(5) (2010) 789-793
Online since: July 2006
Authors: Michael Josef Zehetbauer, Gennady A. Salishchev, Dmytro Kuzmenko, Mariusz Kulczyk, Małgorzata Chmielecka, Krzysztof Jan Kurzydlowski, Witold Łojkowski, Hans Jorg Fecht, Agnieszka Daniszewska, Urszula Narkiewicz
It can, in part, have an amorphous structure.
By altering the sizes of those building blocks, controlling their internal and surface chemistry, their atomic structure, and their assembly, it becomes possible to engineer properties and functionalities in completely new ways.
Nature provided nano-structures.
Many efforts in physics and chemistry are directed towards the assembly of quantum dots into 1D, 2D and 3D structures.
The reason is that the experts represented materials science, not chemistry.
Online since: February 2016
Authors: Hellmut Eckert
Structure/Property Correlations Studied by Modern Solid-State NMR Techniques.
Analogous structures can be drawn for sulfide glasses. 5.
Eckert, Solid State NMR: a Versatile Tool in Solid State Chemistry and Materials Science, in Modern Methods in Physical Chemistry, R.
-range structure of sodium phosphate glasses.
Zwanziger, The structure of alkali tellurite glasses J.
Online since: November 2013
Authors: Rahim Lotfi Orimi, Seyed Javad Mirdeylami
In addition optical and crystalline structure properties of samples, annealed at different temperatures, were investigated.
Qian, Introduction to Crystal Chemistry, 2nd edn. (1999)280 [4] S.
Szab,o, Nanoparticles from compounds with layered structures, Acta Mater. 48 (2000) 953 [17] C.R.
Online since: May 2018
Authors: Gusfiyesi Gusfiyesi, Hendri Sawir, Edo Handika
The structure and size of the anatase crystalline TiO2 photocatalyst respectively before coated, after coated (thin layer TiO2 photocatalyst) and after the photocatalytic reaction has been characterized by XRD (Bruker D8 Advance diffractometer, has a DSD software).
The following data are matched with reference revealed that the crystalline peaks are due to TiO2 anatase structure and no crystalline rutile and brookite peaks were found.
Coleman, The effect of operational parameters on the photocatalytic degradation of humic acid, Journal of Photochemistry and Photobiology A: Chemistry. 148 (2002) 137–143
Online since: July 2017
Authors: Sung Hoon Kim, Dong Chul Kim
Dominant Formation of the Carbon Nanocoils at Low Temperature Dong-Chul Kim1, a, Sung-Hoon Kim1, b * 1Department of Engineering in Energy & Applied Chemistry, Silla University, Busan 617-736, Republic of Korea aehdcjf1514@gmail.com, bshkim@silla.ac.kr Keywords: Growth Mode, Double Helix type Carbon Microcoils, Low Temperature, Thermal Chemical Vapor Deposition.
Hui, Coiled carbon nanotubes: synthesis and their potential applications in advanced composite structures, Composites, B37 (2006) 437–448
Yu, Relationship between geometric structures of catalyst particles and growth of carbon nanocoils, Chem.
Online since: January 2009
Authors: Xiao Ming Chen, Xiang Nan Li, Wei Lan Hu
It is believed that the β-TCP/ Na-doped 58S bioglass (58SN) composite by sol-gel technique in situ could be a desirable biomaterial for preparing scaffold of bone tissue engineering. 1 Introduction β-Calcium phosphate ceramics have been widely used in the clinical application due to their biocompatibility and directly bond bonding. β-Tricalcium phosphate (β-TCP), with similar composition and crystal structure to natural bone, is one of the most commonly used calcium phosphate ceramics to be used in the orthopedic and plastic surgery [1-5].
Scanning electron microscopy (SEM, H-600 STEM/EDX PV9100, HITACHI, Japan) with an Energy Dispersive X-Ray Spectrometer (EDX) detector were used to examine the morphology and crystal structures of the composite powders. 2.4 Immersion in SBF.
Physical chemistry of glass surfaces.