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Online since: June 2017
Authors: Valentina Loganina
The formation of a putty compound structure on the base of a modified binding agent was investigated using X-ray diffraction and thermodynamic analysis of possible reactions.
Frolov, Course of Colloid Chemistry (Surface phenomena and dispersions): a textbook for higher schools, M.: Chemistry, 1982
Ayler, Chemistry silica, M.: World, 1982
Loganina, A.D.Ryzhov, Structure and properties of synthesized additive based on amorphous aluminosilicates, Case Studies in Construction Materials. 3 (2015) 132-136
Online since: June 2007
Authors: Yongju Jung, Young Seak Lee, Soo Jin Park, Seok Kim
Box 107, Yuseong, Daejeon 305-600, Korea (South) 2 Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, P.O.
Box 105, Yuseong, Daejeon 305-600, Korea (South) 3 Dept. of Fine Chemical Engineering and Chemistry, Chungnam National Univ., 220, Kung-dong, Yuseong, Daejeon 305-764, Korea (South) 4 Dept. of Chemistry, Inha Univ., 253, Nam-gu, Incheon 402-751, Korea (South) a Corresponding author: sjpark@inha.ac.kr Keywords: nanoparticles, electrochemical characteristics, catalysts, electrical deposition Abstract.
However, the effect of the preparation method and the structure of various carbon materials have not fully studied to our best knowledge.
All patterns demonstrate the intense characteristic peak at 26°, which could be assigned to the crystalline structure of GNFs.
Online since: October 2010
Authors: Xiao Lei Wang, Jun Fu Wei, Huan Zhang, Kong Yin Zhao, Li Chen
The grafting degree (G) of AA on PP was calculated as follows [6]: G (%) = [(Wg-W0)/W0] ×100% (1) where Wg and W0 represents the weights of initial and grafted PP fibers, respectively. 1.3 Characterization of PP-g-AA The structure of non-woven was characterized by FT-IR (VECTOR22) and the morphology of original and grafted PP was examined by scanning electron microscope (SEM, QUANTA200).
A heterogeneous grafting layer structure was formed on the surface of grafted PP fiber and made the surface of PP rougher than original PP.
Masaru: Radiation Physics and Chemistry.
Singh: Radiation Physics and Chemistry, Vol. 75 (1), (2006), p. 161 [4] T.
Fumio: Radiation Physics and Chemistry, Vol. 71 (1-2), (2004), p. 223 [5] D.
Online since: October 2012
Authors: Xiao Yan Wang, Yong Qing Zhai, Zi Hua Yao, Man De Qiu
Preparation and Microanalysis Study of Nano-Hap/Cs-Chs Composites Materials Qiu Man-de1,2 ,Wang Xiao-yan1, ZHai Yong-qing1 Yao Zi-hua1 (1College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People’s Republic of China. 2Key Laboratory of Medicinal Chemistry andMolecular Diagnosis of Ministry of Education, Hebei University, Baoding 071002) Email:hbuqmd@sina.cn; pych1@hbu.edu.cn Keywords: Hydroxyapatite(Hap);Chitosan(Cs);Chondroitinsulfate(Chs);Microanalysis; Composites materials Abstract.Nano-hydroxyapatite/chitosan-chondroitin sulfate composites materials with different weight ratios were prepared through liquid co-precipitation method.
In order to solve these shortcomings, many material were selected to prepare composites materials with better properties and mechanical strength[4].Chitosan is a sort of natural polysaccharide ,the chemical structure is β-(1,4)-2-amino-2-deoxy-D-glucose , due to its unique properties such as biodegradability, non-toxicity, anti-bacterial effect and biocompatibility[5,6],chitosan have been used widely in a variety of biomedical application[5].now much attention has been paid to chitosan-based biomedical materials. chitosan scaffolds and membranes have been reported to be suitable for bone and wound tissue engineering applications[7,8].
The as-synthesized composites materials keep the similar phase structure to nano-Hap, but the crystallinity and granularity have been changed due to the introduction of organic chitosan and organic chondroitin sulfate.
Materials Chemistry and Physics(2011),130(1):561-568
Online since: February 2008
Authors: Daniel Fruchart, Sophie Rivoirard, Dílson Silva dos Santos, L.M. Tavares, S.A. Loureiro
Manna et al. [5] observed the formation of Zr with fcc structure by MA of metallic α-Zr in toluene.
Pantea, et al.: Journal of Physics and Chemistry of Solids Vol. 66 (2005), p.1213 [4] P.P.
Talapatra, et al.: Materials Chemistry and Physics Vol. 68 (2001), p. 85 [5] I.
Woodward: Journal of Solid State Chemistry Vol. 141 (1998), p.78 [7] G.B.
Tavares: Journal of Physics and Chemistry of Solids, submitted [9] F.
Online since: July 2011
Authors: Geng Zhong, Jian Wang, Xiao Man Zeng, Bei Yu Liu, Yu Hong Xia
The physico-chemical properties and structure of SCMK were investigated.
Maekaji: Agricultural and Biological Chemistry Vol. 42 (1978), p. 177 [3] Z.M.
Seow: Food Chemistry Vol. 103 (2007), p. 994 [30] J.
McClements: Journal of Agricultural and Food Chemistry Vol. 51 (2003), p. 766 [35] A.
McClements: Journal of Agricultural and Food Chemistry Vol. 48 (2000), p. 1593 [36] H.Q.
Online since: October 2013
Authors: G.H. Yeoh, A.C.Y. Yuen, R.K.K. Yuen, S.M. Lo, T. Chen
The traditional Smagorinsky subgrid-scale model accounts only strain rate of the turbulent structure while the WALE model considers both the strain and the rotation rates.
Hence, soot production is determined predominantly by the large-scale turbulent advection, SGS turbulent diffusion, and finite-rate soot chemistry effects.
It is observed that this layer reached the fully-open end and became constant in height after 60 s where the structure of iso-surface maintained a similar shape.
The model includes a fast chemistry combustion model, radiation from combustion products and soot.
A fully-coupled simulation of vortical structures in a large-scale buoyant pool fire,International Journal of Thermal Sciences, Vol. 48, pp. 2187-2202
Online since: October 2010
Authors: Wei Zhang, Chao Ping Zhang, De Jun Shen
Preparation of Cobalt and Copper Superfine Composite Oxides and magnetic property Wei Zhang1, 2a, Chao ping Zhang1,b and De Jun Shen3,c 1Department of Chemistry, Guizhou University.Guiyang, 550025 Guizhou, P.R.China 2Guizhou YiKang pharmacy Ltd. guiyang 550025,Guizhou, P.R.china 3Department of Chemistry and Materials, College GuiYang, Guiyang, 55008 Guizhou.
Those composite oxides having a specific structure, for instance,ABO3 ,A2BO4 and AB2O4 etc.
All the diffraction peaks of Co3O4 can be ascribed to the cubic spinel structure of Co3O4 [20], while those of CuO are assignable to the monoclinic tenorite structure [21].
to Co2+ (dCo2+…74:5 pm); so speculate that Cu2+ could replace Co2+ entering the cubic structure of Co3O4 (maybe forming CuxCo3-xO4 solid solution with the spinel structure).The maximum number of Cu2+accommodated by CuxCo3-x O4 with spinel structure was at Co/Cu ratio of 2/1, where Co2+ in Co3O4 was totally replaced by Cu2+.
WELLS, "Structural Inorganic Chemistry" , Clarendon Press, Oxford, (1975), p. 1051.
Online since: September 2013
Authors: Xiao Long Zhang, Zhi Xiang Zhou, Xue Lan Fan, Han Dong Li
With the development of computer technology and quantum chemistry, methods based on quantitative structure-toxicity relationship (QSTR) have been an increasing role in environmental hazard assessment.
The chemical structure files were obtained by inputting their names or CAS Registry numbers in EPI suit.
Most of the descriptors were the electronic features and the thermodynamical parameters of the structures.
Journal of Medicinal Chemistry.Vol 34 (1991), p. 786-797
Chinese Journal of Structural Chemistry.Vol 26 (2007), p. 7-14
Online since: August 2019
Authors: Heni Rachmawati, Hermawan Kresno Dipojono, Vera Khoirunisa, Lusia Silfia Pulo Boli, Febdian Rusydi, Nufida Dwi Aisyah
Then we calculate Fig. 1: Kekule structure of tetrahydrocurcumin.
The atomic numbering in geometry (a) is presented to briefly explain this molecular structure according to Table 1.Table 1 presents some calculated and experimental parameters of molecular geometry of tetrahydrocurcumin at the ground state.
We compare our calculated parameters to two previous experimental parameters, which are crystal structure of tetrahydrocurcumin [2] and phenol molecule at gas phase [11].
A 106 (2002) 6102-6113[11] "Bond Lengths and Angles in Gas-Phase Molecules", in CRC Handbook of Chemistry and Physics, Internet Version 2005, David R.
[14] K Hassanzadeh, K Akhtari, H Hassanzadeh, SA Zarei, N Fakhraei, K Hassanzadeh, The role of structural C-H compared with phenolic OH sites on the antioxidant activity of oleuropein and its derivatives as a great Non-flavonoid family of the olive components: a DFT study, Food Chemistry 164 (2014) 251-258