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Online since: April 2009
Authors: A.V. Vedyayev, Andrei V. Ivanov, V.A. Ivanov, V.Yu. Galkin, A.N. Shalygin
Kurnakov Institute of General and Inorganic Chemistry of the RAS, Leninskii prospekt, 119991 Moscow, a andrei_i@ostrov.net Keywords: Metamaterials; Amorphous ferromagnetic microwires; Negative index of refraction; Optical Magnus effect.
Introduction For a few recent years, new developments in artificially structured materials giving rise to negative refractive index ( ) ( ) 0μεn <⋅= ωω with simultaneously negative real parts of frequency dependent permittivity ( )ωε and permeability ( )ωµ in some frequency ranges have been attracting much attention.
Online since: October 2008
Authors: Konstantinos M. Paraskevopoulos, Eleana Kontonasaki, Xanthippi Chatzistavrou, Aldo Roberto Boccaccini, Petros Koidis, K. Chrissafis, Lambrini Papadopoulou, Nikolaos Kantiranis, E. Hatzistavrou
Surface chemistry, topography and roughness, as well as residual porosity and surface energy need to be optimized in dental ceramics, as they will have a significant effect on periodontal connective tissue attachment [1].
The crystalline structure was characterized by X-ray diffraction (XRD) analysis.
Online since: July 2015
Authors: Jian Li Yang, Mei Li Du, Tian Qin Zang
Study on Using Chenghe Fly Ash to Prepare 4A Molecular Sieve Jianli YANG1, a, Meili DU and Tianqin ZANG 1 School of Chemistry and Chemical Engineering, Xi′an University of Science and Technology, Xi′an 710054, China ayjl0823@163.com Keywords: Fly ash,Molecular sieve,Guide agent, Citric acid Abstract.In recent years, with the rapid development of coal industry, a large number of coal fly ash has been produced, while the recycling rate of the ash is rather low.
At first fly ash is removed carbon and activated, on the one hand to increase its whiteness, on the other hand to dissolve the vitreous, destruct structure of quartz and mullite crystal, release amorphous SiO2 and Al2O3, in order to facilitate subsequent processing.
Online since: July 2015
Authors: Fang Xu, Jun Xia Yin, Ming Yang
Synthesis of and Characterization of Polyhedron of Mn2O3 Nanoparticles Using Spent Zn-Mn Batteries Fang XUa, Junxia YINb and Ming YANGc* School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, ChangQing Garden, Hankou, Wuhan, 430023, P.
The SEM image exhibits a clear assembly composed of Mn2O3 nanoparticles structure on the polyhedron surface.
Online since: December 2006
Authors: Beom Goo Lee, Yeon Ho Jeong, Dong Ha Cho, Kang Yol Lee, Wie Soo Kang
It is important in milling to reduce the particle size without changing the characteristics of medicinal plant, because milling can change the morphology by making crystalline structure armorphous [5].
Li: Food Chemistry Vol. 77 (2002), p.35 [7] W.S.
Online since: June 2012
Authors: Zhi Ai Yang, Xia Wang, Rong Ma, Xu Chun Song, Li Jin Feng
Adsorptive removal of Rhodamine B from aqueous solutions by carbonaceous microspheres Zhi Ai Yang1,a Li Jin Feng 1, b, Xia Wang 1,c, Rong Ma 1,d and Xu Chun Song1,e 1Department of Chemistry, Fujian Normal University, Fuzhou 350007, P.
It is apparently that all of the products have the microspheric structures with the diameters ranging from 1.0 to 1.5 μm.
Online since: March 2010
Authors: Jian Feng Huang, Yan Wang, Hui Zhu, Xie Rong Zeng, Li Yun Cao
Influence of Processing Factors on the Phases and Morphologies of ZnS Optical Thin Films Wang Yan1, a, Huang Jian-feng1, b, Cao Li-yun1 , Zhu Hui1 and Zeng Xie-rong2 1 Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an Shaanxi 710021, China 2 Shenzhen Key Laboratories of Special Functional Materials, Shenzhen 518086, China a wang84yan@163.com, b huangjf@sust.edu.cn Keywords: ZnS; Thin films; Vacuum evaporation Abstract.
In addition, it is shown in the Fig. 3(b) that the crystallites of the as-prepared films display hexagonal orientation structure along (111) direction, implying the epitaxial growth of ZnS film on Si (111) substrate.
Online since: October 2013
Authors: Er Qiang Wang
Application of Dividing Wall Column in High Purity Cyclohexene Oxide Distillation Erqiang Wang College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China wangerqiang@ucas.ac.cn Keywords: dividing wall column; high purity cyclohexene oxide distillation; two tower process; Abstract: In this paper, application of dividing wall column (DWC) to high purity cyclohexene oxide distillation was studied.
There are five components in this system, in which Cyclohexene oxide and1,4-Cyclohexanediol were user defined components from their molecular structures respectively.
Online since: January 2013
Authors: Sen Liu, Jin Hua Lu, Ying Bo Fei, He Jun Li
The products are a kind of organic compounds coating on MWCNTs structure.
Bedioui: Coordination Chemistry Reviews Vol. 254 (2010), p. 2755-2791
Online since: June 2015
Authors: Fabrizio Roccaforte, Giuseppe Greco, Ferdinando Iucolano
The TLM patterns were laterally isolated by a trench, created by an inductively coupled plasma (ICP) process etch in a Cl2 –based chemistry.
Results and Discussion Firstly, an electrical characterization of the annealed contacts was performed by measuring the current-voltage (I-V) characteristics on the TLM structures.