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Online since: February 2011
Authors: Hao Yu Shen, Sheng Dong Pan, Fang Fang, Jia Shi
Introduction The oxidation of alcohols into corresponding aldehydes and ketones is a crucial transformation in organic chemistry, with both academic and industry relevance[1-3].
This reveals that the prepared magnetic particles are spinel structure Fe3O4 [8], which indicates that poly(MMA-DVB-GMA)-Ru(Salen) was conjunct with Fe3O4.
Cardillo: Chromium Oxidations in Organic Chemistry (Springer, Berlin, 1984)
Online since: March 2010
Authors: Jun Hu, Feng Chao Luo, Jin Liang He, Yuan Hua Lin
This special structure is considered to be the reason for the colossal permittivity.
Crystal chemistry is employed to explain the changes.
The reduction is explained with crystal defect chemistry.
Online since: April 2014
Authors: Chang Shu He, Lin Zhang, Dong Wang, Ning Yu, Jing Wen Ji
Mechanical Spectra of an Al-12.7Si-0.7Mg Alloy under Extrusion and T6 States Ning Yu 1, a, Changshu He 2, b, Dong Wang 2, c, Jingwen Ji 1, d and Lin Zhang 1, e 1Institute of Materials Physics and Chemistry, College of Sciences, Northeastern University, Shenyang 110004, China 2Key Laboratory of Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110819, China ayuning@imp.neu.edu.cn,bchangshuhe@mail.neu.edu.cn, cdwwinter@126.com,djjw5995@yahoo.com.cn,ezhanglin@imp.neu.edu.cn Keywords: Al-Si-Mg alloy, Mechanical spectrum.
,et al, Precipitation of Si particles in a super rapidly solidified Al-Si hypereutectic alloy, Materials chemistry and physics[J] 2003,81(2/3) :393-395
S, Theory foundation of internal friction in Solid: Grain boundary relaxation and Structure[M] Science Press,2000,beijing
Online since: July 2014
Authors: Ben Lin Dai, Ning Xu, Zhen Wu, An Feng Zhu, Fei Hu Mu
Anaerobic Fermentation Characteristic of Rice Straw Pretreated by HCl Benlin Dai1, 2, a, Anfeng Zhu2, b, Feihu Mu1, 2, c, Ning Xu1, d and Zhen Wu1, e 1Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, Huaian, Jiangsu, 223300, China 2Jiangsu Key Laboratory for Chemistry of Low-Dimensional Material, Huaiyin Normal University, Huaian, Jiangsu, 223300, China abenlindai@163.com, bzhufeng7810@126.com, cfeihumu@hytc.edu.cn, dxuninghs@126.com, escutwuzhen@126.com Keywords: Anaerobic Fermentation, Biogas, Methane, HCl Pretreatment, Rice Straw.
Introduction Crop straw as the special structure of the lignin, cellulose and hemicellulose, could make it difficult to be decomposed by microorganism, so the straw fermentation to start slowly, the fermentation cycle is long, the gas production is low [1].
Acknowledgements This work was financially supported by Huaian Municipal Science and Technology Support Program of China (HAS2013088), the Open Foundation of Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology of China (JSBEET1216), the Open Founds of Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials of China (JSKC12117).
Online since: June 2015
Authors: S.Yu. Karpov, Masami Naito, Eugene YAKOVLEV, A.S. Segal, A.V. Lobanova, K. Hara
Introduction To implement the remarkable potential of silicon carbide (SiC) in high power and high frequency electronics, careful control of n- and p-type doping during Chemical Vapor Deposition (CVD) of SiC-based device structures is required.
Kinetics of the TMAl gas-phase decomposition is studied in Ref. [8] using quantum chemistry investigations.
The surface chemistry model in [11] relies on a detailed description of elementary adsorption, desorption, and incorporation processes with subsequent adjustment of poorly known kinetic constants, which is not required within the approach described below.
Online since: September 2019
Authors: Mohammed Es-Saddik, Said Laasri, Mohammed Taha, Abdelaziz Laghzizil, Abdelowahed Hajjaji, Elkebir Hlil
Their crystalline structure was determined using X-ray diffraction analysis, (Cukα = 0,154 nm).
For HAP-5Al2O3 at 1100°C, the microstructure of the sample, illustrated by figure 5a, shows a fine grain size structure with the existence of inter-granular pores.
Thus, a large grain size structure does not show some exaggerated magnification phenomena and dense block breaking occurs through a transgranular mechanism.
El Idrissi, IOSR Journal of Applied Chemistry 7 (2014) 107
Kutbay, Materials Chemistry and Physics 110 (2008) 68
Online since: September 2013
Authors: Kazuaki Iwasa, Xiao Bai Ma, Zhong Xiao Liu, Shi Liang Li, Ding Hu, Dong Feng Chen, Li Jie Hao, Rong Deng Liu, Yun Tao Liu
The observed pattern in the reciprocal space is explained by the formation of modulated structure with dominant Fe-ion displacements.
This modulation structure give rise to two kinds of tetragonal configurations of Fe ion around the center and corner of Pr ions sites in the unit cell.
The structure of sample was confirmed by x-ray powder diffraction experiment.
Acknowledgements The partial works of growth of sample are complete in College of Chemistry and Molecular Engineering and School of physics of Peking University.
Remeika: Handbook on the physics and Chemistry of Rare Earths, edited by K.
Online since: June 2015
Authors: Shamsul Baharin Jamaludin, A.N. Edzatty, A.H. Norzilah
Grazing incidence X-ray Diffraction (XRD) technique (Bruker D2 Phaser X-ray generator) was used to identify the crystal structure of all the samples and the presence of CNTs on coated steel.
On the other hand, the CNMs on SS2 was longer and smaller compared to MS2, which was shorter, larger and mixed with other fiber-like structures [12].
Journal of Industrial and Engineering Chemistry 2008. 14: p. 275-291
Journal of Materials, Chemistry and Physics, 2006. 98: p. 256-260
[4] Mazdak Hashempour, A.V., Fu Zhao, Massimiliano Bestetti, Direct growth of MWCNTs on 316 stainless steel by chemical vapor deposition: Effect of surface nano-features on CNT growth and structure.
Online since: August 2011
Authors: De Qiang Li, Ji Xian Shi, Ying Jie Lei, Jie Ouyang
Synthesis and Optical Properties of 2-(1H-Imidazo [4,5-b] phenazin-2-yl) phenol Derivatives Lei Yingjie1a, Li Deqiang1b, Ouyang Jie1c and Shi Jixian2d 1.School of Chemistry & Chemical Engineering,Tianjin University of Technology,China 2.
As a part of program of developing new fluorescent probes, we tried to investigate the idea of appending the HPBI moiety on phenazine nucleus to combine their beneficial effects in a single structure.
Therefore, it is necessary to further research on the correlation between the structure of 2-(1H-imidazo [4,5-b]phenazin-2-yl) phenol and various intramolecular and intermolecular factors that govern the fluorescence quenching in such a system, which will be discussed in our future report.
And in view of emission wavelength λem at 540 nm with a Stokes shift around 140 nm, some of the new phenazines like 3a would be applied as ideal model fluorescent probes, even though additional studies are needed to modifify the fluorphore structure so that the fluorescence quantum yields could be improved.
Photochem A: Chemistry, 2002,149: 217-225
Online since: July 2016
Authors: Shinichi Furusawa, Yohei Minami
Fig. 1 shows the crystal structure of orthoclase-type K-feldspar as an example.
Fig. 1 Crystal structure of orthoclase (KAlSi3O8).
Wyckoff, Crystal Structures Vol.4, Second Edition, Interscience Publishers, (1968) pp. 445-446
Schmalzried, Physics and Chemistry of Minerals, 17, (1990) pp. 62-78
Palmer, Physics and Chemistry of Minerals, 31 (2004) pp. 313-320