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Online since: February 2008
Authors: Hui Qing Fan, Jin Chen, Shao Jun Qiu
Pyrochlore-free PMN and (1-x)PMN-xPT powders are synthesized by various soft chemistry techniques such as sol-gel[4], citrate gel[5], coprecipitation[6], molten salt synthesis[7] and partial oxalate[8] methods.
Results and Discussion The core-shell structure was formed by the Mg-citrate-gel covering Nb2O5 particles, and it resulted from the homogeneous mixture in the precursor.
Therefore, the formation of a secondary phase with pyrochlore structure by the reaction of free niobium with lead oxide was avoided.
Another core-shell structure was formed by the (Pb,Ti)-citrate-gel covering MgNb2O6 particles, and it resulted from the perfect mixture in the precursor.
Online since: September 2013
Authors: Ying Shi, Bing Ke Wang, Song Hua Ma
Introduction Modern soliton theory is widely applied in many natural sciences such as chemistry, biology, mathematics,communication, and particularly in almost all branches of physics like fiuid dynamics, plasma physics,field theory, optics, and condensed matter physics, etc.
Substituting (7) and (4) into (1) and collecting coefficients of polynomials of,then setting each coefficient to zero, we have and/or (8) Based on the solutions of (4), one thus obtains following solitary wave solutions of equation (1): (9) (10) Figure l: A plot of a line soliton structure for the physical quantity v1with the parameters (11) (12) (13) (14) (15) (16) Line Soliton Localized Excitations In the following discussion, we merely analyze line soliton excitations of the DLWW system.
According to the solution , when we set the parameters we can obtain a line soliton localized structure presented in Fig.l.
Figure 2: Line soliton structures for the physical quantity vi with the parameters M = 2, σ=1 at (a) L=2, (b) L=3, (c) L=4.
Online since: September 2013
Authors: Pei Song Tang, Zhen Jiang, Ling Xiang Jia, Jun Yue Zhu, Ting Ting Lin, Chao Wan Tang, Hai Feng Chen
Preparation of nanoparticulate YFeO3 by microwave method and its load Peisong Tanga, Lingxiang Jiab, Junyue Zhuc, Zhen Jiangd, Tingting Line, Chaowan Tangf, Haifeng Cheng Department of Material and Chemistry, Huzhou Teachers College, Huzhou 313000, China atangps@163.com, bjialingxiang123@qq.com, czhujunyue123@qq.com, djiangzhen512@qq.com, elintingting515@qq.com, ftangchaowan907@qq.com, gheadder@hutc.zj.cn Keywords: YFeO3, microwave method, load, visible-light photocatalysis Abstract.
Conclusions Using Fe(NO3)3×9H2O, Y(NO3)3×6H2O and PVA as the main raw material, the perovskite structure nanoparticulate YFeO3 was synthesized by a microwave process.
Ye, Photocatalytic degradation of MB on MIn2O4 (M = Alkali Earth Metal) under visible light: Effects of crystal and electronic structure on the photocatalytic activity.
Kudo, Photocatalytic H2 evolution reaction from aqueous solutions over band structure-controlled (AgIn)(x)Zn2(1−x)S2 solid solution photocatalysts with visible-light response and their surface nanostructures.
Online since: December 2013
Authors: Irina A. Kurzina, Pavel Musich, Alexander Vosmerikov, Natalia Kosova
., Tomsk, Russia 3 Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, 634021, Tomsk, pr.
Zeolites were synthesized under hydrothermal conditions from alkaline alumina silica gel using structure forming hexamethylenediamine additives.
The porous structure and specific surface of the samples were determined by BET using automatic TriStar II 3020 analyzer of Micromeritics (USA).
[2] Takashi Ogawa [et al.], Direct Dimethyl Ether Synthesis, J. of Natural Gas Chemistry. 12 (2003) 219–227
[10] M.M Karavaev, Technology of synthetic methanol, Chemistry, Moskow, 1984.
Online since: November 2010
Authors: Hai Yan Du, Jia Yue Sun, Jian Bo Xian, Xiang Yan Zhang
The both ends of the molecular structure of the synthesized UV-curable sealant include two C=C bonds which belong to π-electronic structure.
Furthermore, from the molecular structure of our synthesized UV-curable sealant uesed in LCD panel investigation, it contains several bisphenol-A groups, the groups are able to stand high temperature.
(a,d) CaF2:Yb3+/Tm3+ (b,e) SrF2:Yb3+/Tm3+ (c,f) BaF2:Yb3+/Tm3+, and SAED patterns of MF2:Yb3+/Tm3+ NCs are inset of (a-c).Synthesis and molecular structure of the UV-curable sealant.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Online since: April 2014
Authors: Md Eaqub Ali, Sharifah Bee Abd Hamid, Mahbub Ullah
This is because of its ease of operations, cost-effective maintenance, and availability of adsorbents in various forms with high surface area, porous structure and specific surface reactivity.
In this review, various water treatment techniques with their shortcomings followed by efficiency of adsorption and nano-adsorbent for pollutant removal are discussed with green chemistry perspectives.
The adsorption capabilities result from a net negative charge on the structure of minerals as well as their high surface area and high porosity [9].
Online since: November 2010
Authors: Yong Shun Yang, Jun Qing Guo, Fu Xiao Chen, Xue Kao Li
Yet, its ductility was poor at room temperature and plastic forming was difficulty due to its close-packed hexagonal structure.
Due to its close-packed hexagonal structure with low slip system, the ductility of magnesium alloy is poor at room temperature.
It is possible to get complex structure parts using the superplasticity of magnesium alloy[4].
In air bulking structure, air cylinder 4 was employed to provide enough pressure air filling into pipe through hoses.
Materials Chemistry and Physics. 57(1999), p.195-206
Online since: November 2010
Authors: Da Zhi Sun, Ping Sun Qiu, Xi Yun He, Xia Zeng, Wen Xiu Cheng, Xin Sen Zheng
Fabrication of 1-3 type multiferroic nanostructured composite films by chemical methods Xia Zeng1,a, Xiyun He1, Da zhisun2, Wenxiu Cheng1, Pingsun Qiu1 and Xinsen Zheng1 1Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai  200050, China 2Shanghai Normal University, Key Laboratory of Resource Chemistry of Ministry of Education, 100  Guilin Road, Shanghai 200234, China azengxia77@gmail.com Keywords: Multiferroic composite film; Electrodeposition; Co nanowire; PZT Abstract.
The images, phase structure and magnetic properties were characterized by SEM, XRD and VSM, respectively.
We here explore a novel multiferroic composite by fabricating 1-3 type structures in which ferromagnetic rods or wires are embedded in ferroelectrics matrix with nanometer-thickness.
In constructing such structures, there are many parameters to be optimized: compositions, composite method, etc.
The crystal structure and the texture of the Co nanowire arrays with AAO templates were studied using X-ray diffraction (XRD, Cu-1.54056 A˚, Philips X’pert, Holland).
Online since: March 2007
Authors: René Le Gall, Frédéric Christien, Claire Daniel
Very few papers discuss the influence of grain boundary chemistry on fatigue life; although it was sometimes found that a prior segregation annealing can dramatically reduces the fatigue life.
It was used to measure the chemistry of the crack surfaces.
This is probably related to the relatively low ability for dislocation to cross-slip in brass that reduces the ease to form a cell structure [13] and then increases the pile-up of dislocation near grain boundaries.
Online since: May 2012
Authors: Quan Cheng Zhou, Gui Hua Sheng
Table 1  Structured matrices and experiment results NO. x1(˚C) x2(MPa) x3(%) x4(mL) x5(kg/h) Genistein yield (%) 1 1(70) 1(35) 1(75) 1(60) 1(12) 0.051 2 1 1 1 -1(40) -1(10) 0.031 3 1 1 -1(25) 1 -1 0.053 4 1 1 -1 -1 1 0.047 5 1 -1(25) 1 1 -1 0.051 6 1 -1 1 -1 1 0.048 7 1 -1 -1 1 1 0.028 8 1 -1 -1 -1 -1 0.020 9 -1(50) 1 1 1 -1 0.053 10 -1 1 1 -1 1 0.056 11 -1 1 -1 1 1 0.043 12 -1 1 -1 -1 -1 0.054 13 -1 -1 1 1 1 0.044 14 -1 -1 1 -1 -1 0.042 15 -1 -1 -1 1 -1 0.042 16 -1 -1 -1 -1 1 0.045 17 2(80) 0(30) 0(50) 0(50) 0(11) 0.033 18 -2(40) 0 0 0 0 0.049 19 0(50) 2(40) 0 0 0 0.05 20 0 -2(20) 0 0 0 0.033 21 0 0 2(100) 0 0 0.054 22 0 0 -2(0) 0 0 0.045 23 0 0 0 2(70) 0 0.043 24 0 0 0 -2(30) 0 0.036 25 0 0 0 0 2(13) 0.04 26 0 0 0 0 -2(9) 0.037 27 0 0 0 0 0 0.040 28 0 0 0 0 0 0.037 29 0 0 0 0 0 0.037 30 0 0 0 0 0 0.038 31 0 0 0 0 0 0.039 32 0 0 0 0 0 0.039 33 0 0 0 0 0 0.037 34 0 0 0 0 0 0.039 35 0 0 0 0 0 0.037 36 0 0 0 0 0 0.038 2.5.
Recent Research and Development in Agricultural and Food Chemistry, 3, 85–107 [3] Chen Xuefeng, Liu Di, & Li Xin. (2007) Study on Supercritical CO2 Extraction Process of Nagringenin from Peach Leaf.
Food Chemistry, 105, 266–272 [6] Xu H N, & He C H. (2007) Separation and Purification Technology.