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Online since: December 2011
Authors: Xi Shan Sun, Mei Fen Wang, Dong Yu Xia
Parameter control of 2-D and 3-D uniform models In order to study the impact of dimension on transport coefficients, uniform liquid argon model is established with periodic boundary conditions, there is no significant gap between model and adjacent boundary molecules, the initial model is arranged with FCC crystal structure, fluid density is 1.413g/cm3, NVT ensemble, temperature 91.1K, control pressure is set as 1.55E+6Pa for viscosity calculation.
Physical chemistry reference [M].
Online since: May 2007
Authors: Wei Qin, Xiao Jin Zhao, Ben Li Wang
Introduction High modulus carbon fibers/epoxy composites are widely used in spacecraft structures due to its outstanding properties, including large specific modulus and intensity, small coefficient of thermal expansion, and fine designability [1,2] .
Materials Chemistry and Physics Vol. 97(2006), p.167 [6] K.R Ko, S.K Ryu, S.J Park.
Online since: April 2012
Authors: A. Nopwinyuwong, W. Boonsupthip, P. Suppakul, Chiravoot Pechyen
It is widely adopted in the fields of biology, chemistry, environment, pharmaceuticals and electronics for potential development and use as colorimetric sensors and biosensors [4].
Molecule structure of 10,12-pentacosadiynoic acid (PCDA).
Online since: November 2007
Authors: J.M.S. Skakle, Iain R. Gibson, D.J. Hadden, J. Whyte
Skakle 1,d 1 Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, UK 2 School of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen, AB25 2ZD, UK a u24jmw@abdn.ac.uk, b d.hadden@abdn.ac.uk, ci.r.gibson@abdn.ac.uk, dj.skakle@abdn.ac.uk Keywords: Hydroxyapatite, potassium, carbonate, substitution, X-ray diffraction Abstract.
Results and Discussion X-ray diffraction revealed the as-prepared compositions to have a typical, apatite-like structure with small crystallite size giving broad diffraction peaks.
Online since: October 2007
Authors: Morihiro Saito, Jun Kuwano, Hidenobu Shiroishi, Kenji Yoshihara, Yoshinobu Saito
Effects of the Substitution of B-Site Ion on Oxygen Reduction Electrode Properties of Pb2Ru2O7-δδδδ in Aqueous Solutions Kenji Yoshihara 1, Yoshinobu Saito 1, Morihiro Saito 1, Jun Kuwano1 and Hidenobu Shiroishi2 1 Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 12-1 Ichigayafunagawara-machi, Shinjuku-ku, Tokyo 162-0826, JAPAN 2 Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2 Kunugida-machi, Hachioji-shi, Tokyo 193-0997, JAPAN Keywords: Pyrochlore, Oxygen reduction, Substitution, Alkaline solution, Acid solution ABSTRACT The activities of the pyrochlores Pb2Ru2-xMxO7-δ (M=Mn,Fe,Co,Ni)[PRM(0x)] toward electrochemical oxygen reduction (EOR) were examined in 0.1 M KOH and 0.05 M H2SO4 aqueous solutions.
The preliminary results of X-ray absorption fine structure spectra analysis to know their valences are consistent with the valences predicted by the XRD results.
Online since: May 2011
Authors: Ying Liu, Chun Sheng Pang, Lu Lin, Jun Ping Zhuang
Hydrolysis of cellulose and hemicelluloses is hampered by the overlapping of polymer embedded microfibrils, so a central part of the lignocellulose-to-ethanol process is the physical/chemical pretreatment which aiming at hydrohydrolytic cleavage of its partially crystalline structure [1].
Analytical Chemistry, vol 31, Mar. 1959, pp. 426-428 [7] Aguilar, J.A.
Online since: October 2010
Authors: Tao Lin, Bo Wang, Yan Hui Sun, Hong Yu Chen, Qian Shu Li, Dong Liang Lu, Yu Liu, Chang Juan Guo, Yu Yan Hu
Study of the removal of boron from metallurgical grade silicon by oxidation slagging method Yuyan Hu1,2,3,a, Dongliang Lu1,2,3, Tao Lin1,2,3,Yu Liu1,2,3, Bo Wang1,2,3, Changjuan Guo1,2,3, Yanhui Sun1,2,3, Hongyu Chen1,2,3,b Qianshu Li1,2,3,c 1School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. 
At low concentration of silicon dioxide, the removal efficiency was affected by shortage of oxidation of silicon dioxide.Anionic polymerization SiO44- of complicated structure would occure and the kinetic condition of slagging was poor at high concentration of silicon dioxide, certain region of removal efficiency would reduce.
Online since: July 2012
Authors: Jian Hua Huang, Yan Ling Wu, Lin Lu Zheng, Hong Lu Xie
Study on Synthesis of Environmental Waterborne Polyurethane Linlu Zheng a, Honglu Xieb, Yanling Wuc, Jianhua Huangd Department of Chemistry, Ningde Normal College, Ningde,Fujian, 352100, azhenglinlu666@163.com, bcap999@163.com, cWyanling048@163.com, dlanxin09030101@163.com Keywords:  Waterborne Polyurethane, Environmental, Diphenylmethane Diisocyanate.
MDI is symmetrical in structure and exhibits the large molecular weight, saturated vapor pressure, low toxicity characteristics and lower price.
Online since: July 2011
Authors: Md. Monirul Islam, Soon Ho Lee, Young Don Lim, Whan Gi Kim, Dong Wan Seo, Hyun Mi Jin, Ho Hyoun Jang, Insuk Jeong
Monirul Islam1,d, Hyunmi Jin1,e, Hohyoun Jang1,f, Insuk Jeong1,g, Whangi Kim1,a* 1Department of Applied Chemistry, Kon-Kuk University, Chungju, Chungbuk, Korea ah3boy@hanmail.net, bs0673231@konkuk.ac.kr, cloveknotsh@hanmail.net, dmonir_acct@yahoo.com, e01191153456@hanmail.net, ffigfight@hanmail.net ginsjeong@naver.com, a*wgkim@kku.ac.kr Keywords: PEM, fuel cell, membrane, valeric acid, nano composite, electrolyte, polymer, sulfonation, PES, SiO2.
And Chemical structures of sulfonated poly (ether sulfone) (S-PES) copolymers were identified by 1H NMR shown in Fig. 1. 1H NMR confirmed that methylene protons nearby COOH in PES-COOH were observed at 2.2 ppm and 2.8 ppm respectively, and the methylene protons of PES-OH were shifted to down field 2.1, 2.3, and 3.6 ppm because of the electron withdrawing effect.
Online since: January 2005
Authors: Jae Hong Yoon, Young Sik Kim, Y.R. Yoo, H.S. Kim, K.S. Son, R.M. Latanision, B. Mitton
The corrosion rate was exhibited by the weight change of before and after corrosion, and reaction products of surface was analyzed by XRD and ICP, and the distribution behavior of component elements with respect to the cross-section part and the surface of specimen were analyzed by EPMA and ICP, and the structure change was observed by OM and SEM.
Latanision: Physical Chemistry of Aqueous Systems - Meeting the Needs of Industry, 12 th ICPWS, p.638, Begell House, New York, NY (1995) [6] D.