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Online since: February 2008
Authors: Zhong Bo Hu, Yong Mei Hao, Y.F. Zhou
Structure of Gd(5-x)HoxSi4 Solid Solutions Y.F.
Hu College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, China a yfzhou04@mails.gucas.ac.cn, b ymhao@gucas.ac.cn Keywords: X-ray diffraction; Crystal structure; Anneal.
structure of the Ho5Si4 is illustrated in Fig. 2.
This compound has the same Gd5Si4 structure type as that of Nd5Sn4 [8].
This compound has the same Gd5Si4 structure type.
Online since: May 2012
Authors: Katarína Dubayová, Iveta Pandová, Taťána Gondová
Šafárik University, Moyzesova 11, 04001 Košice, Slovak Republic 3Department of Medical Chemistry, Biochemistry and Clinical Biochemistry, Faculty of Medicine, P.J.
If the polycyclic aromatic hydrocarbons are get into live organisms, reagents with their structure at formation epoxides and thiolepoxides.
These matters liaise to DNA, corrupted their structure and this fact induces cancer formation.
By implementing some elements in the structure of zeolite, also its catalytic properties can be improved.
Jacobs: „Zeolite Chemistry and Catalysis“, Elsevier, New York, 1991
Online since: September 2020
Authors: Jin Wang, Bo Li, Chang Xu Yan
Figure 2c and Table 2 show and the results of the structure refinement, demonstrating that microcubes can be assigned to an orthogonal anti-ferroelectric phase structure.
Journal of materials chemistry A, 2016, 4(36): 13778-13785
Journal of Materials Chemistry A, 2017, 5(2): 554-563
ACS Sustainable Chemistry & Engineering, 2018, 6(10): 12755-12765
Chemistry of Materials, 2014, 26(12): 3838-3848
Online since: October 2011
Authors: Yong Guo, Mei Xia Wu, Jian Guo Zhao, Ke Yi Tao
Chitosan-mediated preparation of porous amorphous NiB nanoparticles from silver-catalyzed electroless plating Meixia Wu1, a, Yong Guo1, b , Jianguo Zhao1, c and Keyi Tao 2, d 1 College of Chemistry and Chemical Engineering, Shanxi Datong University, Xingyun Street, Nanjiao District, Datong, 037009, China 2 College of Chemistry, Nankai University, Weijin Road 94, Nankai District, Tianjin, 300071, China awmxiccas@iccas.ac.cn, bybsy_g@263.net, cjgzhaoshi@163.com, dkytao@nankai.edu.cn Keywords: NiB, Electroless plating, Chitosan, Hydrogenation.
Introduction Amorphous metal-metalloid materials are especially intriguing as novel hydrogenation catalyst and expected to play a pivotal role in fine chemistry.
Amorphous NiB alloys are characterized by the unique combination of small particle size and short-range ordering and long-range disordering structure and are promising candidates for hydrogenation catalysts [1].
The SEM images show the morphology of the aggregations of NiB particles, and the SAED patterns indicate the amorphous structure of NiB samples.
Furthermore, NiB particles in NiB/MgO shows the porous structure, while the ones in NiB-CS/MgO seems to the aggregation of smaller flower-like NiB clusters.
Online since: October 2013
Authors: Gui Shan Liu, Tie Cheng Ma, Er Rong Cai, Tong Feng, Zhi Qiang Hu, Hong Shun Hao, Ren De Fang
The CdS films were deposited on soda lime glass (SLG) substrate by Chemistry Bath Deposition (CBD).
The influence of cadmium concentration on structure and properties of CdS films had been investigated.
The results show that the cadmium concentration has great influence on Crystallite structure and grain size of the films.
Recently many researchers have done a large number of studies on the influence of the fundamental parameters including pH, temperature, rotate speed and titration or dumping of thiourea solution [6] on the structure and properties of CdS thin films.
Therefore, in this paper, our research work was focused on the influence of different cadmium acetate concentrations on the structure and properties of CdS thin films deposited by CBD.
Online since: November 2013
Authors: Lin Wei, Yu Guang Tang, Wen Hua Tao
aemail:82682247@qq.com bemail:apple2009714816@163.com cemail:taowenhua@sina.com Keywords: Performance Assessment; Decentralized Controller internal structure;Improved user-specified indicators;associated matrix Abstract.
Under the influence of the internal structure of the control system, partially closed-loop delay is not equal to the open-loop delay.
It indicates model change with the variation of the coefficient k that has small influence onthat without interference of the internal structure and larger impact onthat include interference of the internal structure.
Engineering Chemistry Research. 2010, 49:12538−12547
[8] Antonius Yudi Sendjaja, Vinay Kariwala.Minimum Variance Benchmark for Performance Assessment of Decentralized Controllers [J].Engineering Chemistry Research, 2012, 51:4288-4298.
Online since: January 2007
Authors: Jae Rock Lee, Kyong Yop Rhee, Soo Jin Park, Jin Seok Oh
Introduction From a technological point of view, the surface modification of carbon materials is of great importance in a wide variety of fields, such as biomedical, electro chemistry microelectronics, and thin-film technology [1-3].
The ultimate goal of these treatments is to change the surface chemistry and microsructure of the materials and thus modulate a number of properties: biocompatibility, roughness, reactivity, conductivity, etc. [4].
Carbon surface oxidation by oxygen plasma would be somewhat easier on disordered carbon structures than on highly ordered ones such as graphite [7].
The treatment time needed to achieve the desired changes in fiber surface chemistry is the order of several seconds to a few minutes.
Subsequently, upon exposure of the plasma treated materials to the ambient, post reaction aging effects lead to a restructuring of the surface towards a new stable thermodynamic equilibrium in with the chemistry may differ somewhat from that originally created by the plasma [8].
Online since: May 2011
Authors: Yan Song, Li Ping Deng, Xing Hai Liu, Liu Zhi
Synthesis of α-MoO3 Microspheres Assembled by Nanorods in Room Temperature Ionic Liquids Zhi Liu a, Yan Song b, LiPing Deng c, XingHai Liu d Institute of Chemistry for Functionalized Materials, Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road 850, Dalian 116029, China a1501311@163.com, bxiaopohai106@yahoo.com.cn cdengli_ping@126.com, dsea19851111@163.com Keywords: RTIL, microwave, α-MoO3, microspheres, nanorod Abstract: α-MoO3 microspheres assembled by nanorods were synthesized in room temperature ionic liquids (bmimBF4: 1-butyl-3-methylimidazolium tetrafluoroborate) by microwaves heating method.
Then, the tube with the mixture was heated in a microwave oven (MDS-2002AT, 2.45GHz, 1000W, Sineo Microwave Chemistry Technology) for a desired time.
Results and Discussion XRD was used to characterize the crystal structure and phase purity of the products.
The high-magnification SEM image (3B) exhibits that these spherical structure was assembled by numerous nanorods, which were about 120~130 nm in thickness and about 700 nm in width.
It has been reported that ILs such as bmimBF4 and bmimPF6 can form two-dimensional polymeric structure by hydrogen bonds between the cations and anions [15], thus it is reasonable to deduce that the organized structure of the IL has a template effect for the formation of α-MoO3 microspheres with nanorods.
Online since: January 2013
Authors: Xi Qun Zheng, Jing Jing Lu, Xiao Lan Liu, Zhi Sheng Liu
Evaluation of functional properties of protein from its structure characteristic is more difficult [2], especially as CSWPC that contain several different types of proteins.
Because of the sucrose improves the viscosity of the liquid, thereby reducing the speed of escape that the thin layer of liquid in the foam structure, so that increase the foam stability .
Y.Yada, “Structure-function relationship of cowpea (Vigna unguiculata) globulin isolates :influence of pH and NaCl on physical chemical and functional properties,” Food Chemistry, vol. 53, no. 3, pp. 259-265, 1995
Kinsella, “Emulsifying properties of proteins evaluation of a turbid metric technique,” Journal of Agricultural and Food Chemistry, vol. 26, no. 3, pp. 716-723, May 1978
[8] Wang Hong-xin, Hu Yang-yun, Study on Modification and Functional Properties of Tea Dregs Protein[J], Food Chemistry, 2005, 26(6), P135-140 (Ch)
Online since: December 2012
Authors: Shen Lin, Xiaofeng Zhang, Qiu Feng Huang, Qian Qian Song
The morphology of PAMAM has been computed to possess open structures and asymmetric shapes for the low generations, termed earlier generations (G=1-3) and densely packed structures and spherical shapes for the high generations, termed later generations (G≥4) [1].
Aldehydes are important intermediates in synthetic chemistry as well as a significant pollutant in the humam environment [5].
Because TMSP contact to the supports directly, the underlying structure of the supports can potentially influence the properties of TMSP catalysts and catalyst-support interaction could exist [14].
Lou, C.L.Liu, Chinese Journal of Chemistry, Vol. 25(2007), p. 322 [15] Zhou, G.
Journal of Physical Chemistry B, Vol. 107(2003), p. 6292 [22] Jean, M.