Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: October 2007
Authors: Fujio Izumi, Takashi Kamiyama, Michihiro Miyake, Motohide Matsuda, Masahiro Kajitani, Akinori Hoshikawa
Investigation of the Oxide Ion Conduction Mechanism in LaGaO3-Based Electrolytes through High-Temperature Neutron Powder Diffraction Masahiro Kajitani1, Motohide Matsuda 1, Akinori Hoshikawa 2, Takashi Kamiyama 3, Fujio Izumi4 and Michihiro Miyake 1 1 Department of Environmental Chemistry and Materials, Faculty of Environmental Science and Technology Okayama University, Okayama 700-8530, Japan 2 Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan 3 Institute for Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba Ibaraki 305-0801, Japan 4 Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan Keywords: Lanthanum Gallate, Oxide Ion Conductor, Perovskite, Neutron Diffraction ABSTRACT The crystal structure and oxide ion conduction properties of La0.9Sr0.1Ga0.9Mg0.1O2.9 were compared with those of LaGa0.8Mg0.2O2.9 with the same oxygen vacancy
The GaO6 octahedral tilts in the LaGaO3 perovskite structure were reduced by double doping with Sr and Mg.
We previously reported the individual and combined doping effects of Sr and Mg on the crystal structure and conduction properties of LaGaO3 [7-9].
According to a previous report [15], oxide ions in the perovskite structure pass through a bottleneck formed by two A-site cations and one B-site cation.
Slater et al. [4] reported that the conduction path of oxide ions in perovskite was constrained when the structure was distorted.
Online since: February 2016
Authors: Mohd Zafar Iqbal, Rafiuddin Rafiuddin
Electrical conductivity, dielectric, modulus and optical studies of Ag2SO4 and TiO2 composite solid electrolytes Mohd Zafar Iqbal and Rafiuddin* Physical Chemistry Division, Department of Chemistry, Aligarh Muslim University, Aligarh 202002- India.
According to Maxwell–Wagner model, the structure of a dielectric material assumed to be made up of two layers.
Maier, Defect chemistry in heterogeneous systems, Solid State Ionics 75 (1995) 139-145
Rao, Structure and ionic transport in Al2O3 containing composites, Rev.
Rao, Structure and electrochemistry of LixMnyNi1−yO2, Solid State Ionics 51 (1992) 311-318
Online since: March 2004
Authors: Young Soon Kwon, Sang Burm Jung, Ki Sung Yang, Seung Yeop Yoo, Chung Kyun Kim, Burm Jong Lee
., Dong-A University, 840, Hadan-2dong Saha-gu, Busan 604-714, Korea 2 Dept. of Chemistry, Dong-A University, 840, Hadan-2dong Saha-gu, Busan 604-714, Korea 3 Dept. of Chemistry, Inje University, 607 Obang-dong, Gimhae, Gyeongnam 621-749, Korea keywords: electrical properties, dendrimer, thin films, STM, azobenzene Abstract.
Figure 1 represents the chemical structure of G4-48 Azo dendrimer.
The chemical structure of G4-48Azo dendrimer.
We consider that the asymmetric structures are formed by the LB method [8].
Thus the G4-48Azo dendrimer LB films deposited might be asymmetric in structure.
Online since: June 2015
Authors: Jing Ying Li, Chuan Jing Ma, Ren Jie Liu
Hughes, Chemistry and biochemistry of thiocyanic acid and its derivatives, In: Newman, A.A.
Monhemius, Leaching of gold in thiocyanate solutions -Part 1: chemistry and thermodynamics, Trans.
Formation of trithiocyanate in the oxidation of aqueous thiocyanate, Inorganic chemistry. 41 (2) (2002) 164-166
House, The chemistry of gold extraction, New York: Ellis Horwood. 1992
Ferrate (VI) and ferrate (V) oxidation of cyanide, thiocyanate, and copper (I) cyanide, Radiation Physics and Chemistry. 77 (6) (2008) 761-767
Online since: April 2012
Authors: Wang Xi Fan, Ze Fang Li, Zhou Zhang
Synthesis and Characterization of novel biological active meterial with aroyl urea FAN Wang-xi1,a, LI Ze-fang2,b, ZHANG Zhou1,c 1.Department of Applied Chemistry and Environmental Engineering, Wuhan Bioengineering Institute, Wuhan 430415, Hubei, China 2.
The structure of the target compound was confirmed by IR, 1H NMR and elemental analysis.
At the same time, many researchers also found that the acyl urea com- pounds had excellent insecticidal, fungicidal, herbicidal and plant growth regulatory biological activi- ties because of permeability of structure and gteat biocompatibility, and even they had appeared in the commercialized plant growth regulator[4-6].
WANG YG of College of Chemistry, Central China Normal University for helping.
Online since: August 2013
Authors: Fang Zhang, Shu Qin Bai, Ya Qiong Wang, Gao Wa Naren
Formation of silica scales in the water utilization process and its prevention methods Fang Zhang1, a, Gaowa Naren2,b Yaqiong Wang1,c and Shuqin Bai1,d* 1College of Environment and Resources of Inner Mongolia University, Hohhot, 010021, China 2Department of Chemistry, Faculty of Sciences, Kyushu University, Fukuoka 810-8560, Japan azhangfang0318@126.com,bnaren792712@yahoo.co.jp, c927445367@qq.com, dbaishuqin2000@yahoo.com.cn Keywords: Water utilization process, Silica scale formation, Polymerization of silicic acid, Prevention method.
Silica scale is a significantly serious problem to prevent the effectively operation of industries due to its hard structure and low solubility.
The cooling water is mainly groundwater or river water, and contains silicic acid in concentration ranges from10 to 50 mg dm-3 (as SiO2) due to the geological structure of reservoirs that are primarily composed of igneous silicate rocks [4].
Iler : “Chemistry of Silica”, (1979), ( John Wiley) [19] C.
Online since: December 2024
Authors: Long Li
Due to their complex geometry and unique properties, TPMS structures have significant applications in fields including material science, physics, chemistry, and biology.
Load application of porous structure.
Finite Element Simulation of Porous Structures Stress-strain Analysis of Unit Cell Structure.
The Primitive structure has higher yield strength, and the Diamond structure has lower yield strength than the Primitive structure, while the Diamond structure’s yield strength is about 73.87% of that of the Gyroid structure.
Compression-induced structural failure initiates differently in each structure: at the top layer for the Diamond structure, at the upper and lower halves for the Gyroid structure, and at the unit cell connections along the 45° line for the Primitive structure.
Online since: May 2006
Authors: Magdalena Popczyk, Henryk Scholl, Tadeusz Blaszczyk, Antoni Budniok
Structure and Electrochemical Characterization of Electrolytic Ni-Co-P and Ni-W-P Layers Magdalena Popczyk, Antoni Budniok, Henryk Scholl*, Tadeusz Blaszczyk* University of Silesia, Institute of Materials Science Bankowa 12, 40-007 Katowice, Poland *University of Lodz, Institute of Chemistry Narutowicza 68, 90-136 Lodz, Poland e-mail: mpopczyk@us.edu.pl Keywords: Amorphous Ni-P matrix, cobalt, tungsten, electrolytic layers.
This study was undertaken in order to obtain the Ni-P layers, containing an additional alloying component (cobalt or tungsten) in an amount of ensuring obtained amorphous structure.
XRD investigations show that the Ni-Co-P and Ni-W-P layers are an amorphous structure like the Ni-P layer.
Online since: June 2014
Authors: Suzana Yusup, Bridgid Chin Lai Fui, Murni Melati Ahmad, Zakir Khan
These types of material exhibit mesoporous structure which was also verified by the pore size of the samples found via BET analysis.
Furthermore, Nasrazadani et al. [23] and Muhamed [21] reported grain like structure for calcined limestone and synthesis CaO from cockle shell, respectively.
Inayat, Effect of steam and catalyst on palm oil wastes thermal decomposition for hydrogen production, Research Journal of Chemistry and Environment, 15 (2011) 466-472
Wu, Improved long-term conversion of limestone-derived sorbents for in situ capture of CO2 in a fluidized bed combustor, Industrial & Engineering Chemistry Research, 43 (2004) 5529-5539
Fujimori, Distinctive effects of CaO additive on atmospheric gasification of biomass at different temperatures, Industrial & Engineering Chemistry Research. 44 (2005) 5864-5868
Online since: October 2018
Authors: A.Kh. Malamatov, M.K. Vindizheva, A.V. Orlov, S.G. Kiseleva, Timur A. Borukaev
The chemical structure of the polymers obtained is established.
Therefore, the question of finding new structures of azomethine compounds with special properties (high luminescence, increased electrical conductivity, solubility in organic solvents) is very promising and relevant.
The structure of the obtained polymers was confirmed by means the IR-Fourier spectrometer of SHIMAZU in the range 400-4000 cm-1.
The most likely mechanism of polymerization is the formation of cation-radical: After the formation of such a cation radical, tetramer formation occurs: Further tetramer is polymerized to obtain a polymer, the main structure of which is emeraldine.
Novopoltseva, Azometina: the directions practical uses in chemical industry and medicine //Collection of scientific works: Chemistry and technology of elementorganichesky monomers and polymeric materials, Volgograd, 2003, P. 3-28