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Online since: July 2015
Authors: Li Ying Yang, Guan Ting Liu
Introduction
Quasicrystals(QCs) are both a novel structure of solids and a kind of new materials discovered by Shechtman et al. in 1984[1], the discovery of which won the 2011 Nobel prize for chemistry.
Int J Solids and Structures, 41(2004) 3949–3959
Int J Solids and Structures, 41(2004) 3949–3959
Online since: August 2016
Authors: Aleksandr Vasilyevich Pitukhin, Sergey Borisovich Vasilyev, Gennady Nikolaevich Kolesnikov, Nikolai Gennadievich Panov
The nanoporous structure of surfaces of the particles provided the specific surface 120...400 m2/g.
This structure constitutes a reinforcing mesh, which is the main cause of strength increase.
Zhuravlev The surface chemistry of amorphous silica.
This structure constitutes a reinforcing mesh, which is the main cause of strength increase.
Zhuravlev The surface chemistry of amorphous silica.
Online since: August 2019
Authors: Wancheng Sittikijyothin, Keonakhone Khounvilay, Rattanaphol Mongkholrattanasit, Khanaphit Khumduang
Rheological Behavior of Seed Gum from Cassia Fistula
Wancheng Sittikijyothin1,a*, Khanaphit Khumduang1,b,
Keonakhone Khounvilay2,c and Rattanaphol Mongkholrattanasit3,d*
1Department of Chemical Engineering, Faculty of Engineering, Burapha University, 169 Tambon Saensook, Amphur Muang, Chonburi 20131, Thailand
2Department of Chemical Engineering, Faculty of Engineering, National University of Laos, 3166, Lao-Thai friendship Rd, Vientiane PDR
3Department of Textile Chemistry Technology, Faculty of Industrial Textiles and Fashion Design, Rajamangala University of Technology Phra Nakhon, Bangkok, 10300 Thailand
awancheng@buu.ac.th, bmaicheeng21@gmail.com,
ckhounvilay7@gmail.com, drattanaphol.m@rmutp.ac.th
Keywords: Galactomannan, Cassia fistula, Cross model, Rheological behavior
Abstract.
Obviously, a basic understanding of the rheological behavior of seed gum is essential for its potential application and useful in developing structure-function relationships for systems of polysaccharide solutions.
Amid, a review study on chemical composition and molecular structure of newly plant gum exudates and seed gums, Food Res.
Obviously, a basic understanding of the rheological behavior of seed gum is essential for its potential application and useful in developing structure-function relationships for systems of polysaccharide solutions.
Amid, a review study on chemical composition and molecular structure of newly plant gum exudates and seed gums, Food Res.
Online since: September 2013
Authors: Du Yi Jiang, Ting Zhan, Liang Qu
Marine environmental monitoring activities mainly refer to the design management and implementation of marine monitoring tasks with the sea team for the management unit led by a professional tour guides and comprised of marine chemistry, marine hydrology, marine biology, marine remote sensing and other technical staff [3] [4].
Thus, organizational structure setting, workflow setting, administrative office setting and knowledge management setting are all completed in this module.
The overall structure drawing of operation management system.
Thus, organizational structure setting, workflow setting, administrative office setting and knowledge management setting are all completed in this module.
The overall structure drawing of operation management system.
Online since: July 2012
Authors: Jian Bo Jia, Yong Yang, Hu Peng Yu
Acting as a coalgulant, zoogloea is the structure and function core of activated sludge.
To improve treatment load and removal rate of pollutant, immobilization technologies of activated sludge were developed to concentrate free bacteria in a fixed small space through chemistry or physical methods [7, 8].
Moreover, net structure of immobilized pellets was weakened by the mechanical confliction with wastewater.
To improve treatment load and removal rate of pollutant, immobilization technologies of activated sludge were developed to concentrate free bacteria in a fixed small space through chemistry or physical methods [7, 8].
Moreover, net structure of immobilized pellets was weakened by the mechanical confliction with wastewater.
Online since: June 2007
Authors: Moon Jin Hwang, Chong Soo Han
Fabrication of porous YSZ from ZnO-YSZ cermet
Moon Jin Hwang, and Chong Soo Han*
Department of Chemistry, Chonnam National University and
Gwangju Center, Korea Basic Sicence Institute
300 Yongbong-dong, Buk-gu, Gwangju 500-757, Korea
*Corresponding author: cshan@chonnam.ac.kr
Keywords: porous YSZ, ZnO, pore former, catalyst support
Abstract.
The interconnecting YSZ structure shows round edges.
A detailed study on the macro and nano structures of the porous YSZ related to the particle sizes of YSZ and ZnO and fabrication method is underway.
The interconnecting YSZ structure shows round edges.
A detailed study on the macro and nano structures of the porous YSZ related to the particle sizes of YSZ and ZnO and fabrication method is underway.
Online since: January 2009
Authors: Jia Cheng Gao, Jian Zou
Preparation of Nanosize Iron Pyrite FeS2 and Its Properties
Jian ZOU,1,2,a Jiacheng GAO,1,b
1
College of Material science and Engineering, Chongqing University, Chongqing,400044,China;
2
School of Chemistry and chemical Engineering, Southwest University, Chongqing, 400715, China.
As a rule, FeS2 can crystallize into a pyrite structure, being accompanied by a metastable marcasite structure that is detrimental to photovoltaic applications because of its low band gap (Eg=0.34 eV) [3].
As a rule, FeS2 can crystallize into a pyrite structure, being accompanied by a metastable marcasite structure that is detrimental to photovoltaic applications because of its low band gap (Eg=0.34 eV) [3].
Online since: August 2009
Authors: Shu Guang Bian, Ting Feng Tan, Shi Rong Wang, Xiang Gao Li
The coating procedure
of Ti(OH)4 colloid shells on polymer particles involves a simple wet-chemistry method, which
consists of the dispersion of polymer particles into a aqueous solution of Ti(OBu)4 and subsequent
aging.
TEM images of seed emulsions display the characteristic structure of perfect spheres as shown in Fig. 1.
TEM and AFM images of hollow core-shell polymers particles display the characteristic structure of perfect spheres of primary core-shell particles as shown in Fig. 2.
TEM images of seed emulsions display the characteristic structure of perfect spheres as shown in Fig. 1.
TEM and AFM images of hollow core-shell polymers particles display the characteristic structure of perfect spheres of primary core-shell particles as shown in Fig. 2.
Online since: April 2005
Authors: Lauren E. Jackson, Adrian J. Wright
Wrightb
1
School of Chemistry, University of Birmingham, Edgbaston.
Confirmation of the single phase nature of this product was achieved by Rietveld analysis of the XRPD data (see Fig. 2) which provided an excellent match (Rwp = 5.21%, Rp=3.43% and χ2=5.878) with the structure determined by Trommer et al [8], giving lattice parameters a = 7.3128(1) Å, b =8.1107(1) Å, c = 9.7527(2) Å and β = 101.239(1)°.
Von Dreele, General Structure Analysis System, Los Alamos National Laboratory, (1994) [8] J.
Confirmation of the single phase nature of this product was achieved by Rietveld analysis of the XRPD data (see Fig. 2) which provided an excellent match (Rwp = 5.21%, Rp=3.43% and χ2=5.878) with the structure determined by Trommer et al [8], giving lattice parameters a = 7.3128(1) Å, b =8.1107(1) Å, c = 9.7527(2) Å and β = 101.239(1)°.
Von Dreele, General Structure Analysis System, Los Alamos National Laboratory, (1994) [8] J.
Online since: January 2005
Authors: Chuan Qi Feng, Keli Zhang, Jutang Sun
Synthesis and electrochemical properties of nonstoichiometric spinel
phase (Li1.02Mn1.90Y0.02 O4-y F0.08) for Lithium ion battery
Chuanqi Feng1, a
, Keli Zhang
2
and Jutang Sun2
1
College of Bio-engineering, Hubei polytechnic University, Wuhan, Hubei, China, 430068
2
College of chemistry and molecular Sciences, Wuhan University, Hubei, China, 430072
a
pfcq@263.net
Keywords: Nonstoichiometric Li-Mn-spinel, Natural polymer net method, Lithium ion battery
Abstract: A nonstoichiometric spinel phase (Li1.02Mn1.90Y0.02O4-yF0.08) was synthesized using
natural polymer net method.
Besides, many efforts have been devoted to stabilize its structure by doping the metal ions such as Li+, Co 3+ , Cr3+ , Ni 2+ and so on.[1-7] In this paper we first present natural polymer net synthesis and electrochemical properties for nonstoichiometric spinel phase (Li1.02Mn1.90Y0.02O4-yF0.08 ).
The bond enthalpy of Y(Ⅲ)-O was larger than that of Mn(Ⅲ)-O, besides, with Y3+ doped in spinel, the relative content of Mn(Ⅳ) was increased, so the lattice constant of spinel phase compound was decreased and the crystal structure was stabilized.
Besides, many efforts have been devoted to stabilize its structure by doping the metal ions such as Li+, Co 3+ , Cr3+ , Ni 2+ and so on.[1-7] In this paper we first present natural polymer net synthesis and electrochemical properties for nonstoichiometric spinel phase (Li1.02Mn1.90Y0.02O4-yF0.08 ).
The bond enthalpy of Y(Ⅲ)-O was larger than that of Mn(Ⅲ)-O, besides, with Y3+ doped in spinel, the relative content of Mn(Ⅳ) was increased, so the lattice constant of spinel phase compound was decreased and the crystal structure was stabilized.