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Spectrophotometric Determination of Lanthanum in Raffinate with Tribromoarsenazo Xingxin Chen1,a , Kui Liu1,b,* , Lifang Kuang1,c and Hua Long1,d 1School of Chemistry and Pharmaceutical science, Guangxi Normal University, Guilin 541004, China a583100512@qq.com , bliukui@mailbox.gxnu.edu.cn, ckaler05@163.com,d747319474@qq.com * Corresponding Author Keywords: Tribromoarsenazo; Lanthanum; Acidity; Spectrophotometry; Wavelength Abstract.
According to the structure of tribromoarsenazo (Fig.5), arsono-group lies to the ortho-position of the azo-group and can form an intramolecular hydrogen bond.
Zhang.Asian Journal of Chemistry Vol.20(2008),P.5060-5066

It is suitable for the packaging structure design and food preservation [5].
Food Chemistry 2011; 127 (4), 1680-1685 [5] Darmadji P, Izumimoto M.
Food Chemistry 2010; 122 (4), 1035-1042.

Synthesis and Properties of A Novel Conjugated Polyfluorene Derivative Mei Yan1, a, Weiqiang Gao1,b, Shenguang Ge1,c, Jiadong Huang1,d and Jinghua Yu1,e* 1 Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, China a chm_yanm@ujn.edu.cn, b gwq001007@163.com, c chm_gesg@ujn.edu.cn, dtiger7955@163.com, e ujn.yujh@gmail.com Keywords: conjugated polymers, polyfluorene derivative, conductive, fluorescence Abstract. a novel polyfluorene derivative, poly[(9,9-bis(3'-(N,N-dimethylamino)propyl)-2,7- fluorene)-alt-2,7-(9,9- p-divinylbenzene)] (P-1) was synthesized by the palladium-catalyzed Suzuki coupling reaction and it’s quaternized ammonium polyelectrolyte derivatives was obtained through a postpolymerization treatment on the terminal amino groups.
Introduction Conjugated polymers (CPs) are characterized by a delocalized electronic structure.

Effect of Nitric Acid Modification on LiMn2O4 Prepared by Solution Combustion Synthesis Yan Xia1,2,a, Mei Huang1,2, Junming Guo 1,2,b，Yingjie Zhang 1,2,c 1Key Laboratory of Ethnic Medicine Resource Chemistry, State Ethnic Affairs Commission & Ministry of Education，Yunnan University of Nationalities, Kunming, China 650500 2School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, China 650500 axiaxiahuhu1020@126.com, bguojunming@tsinghua.org.cn(corresponding author), cyingjie@kmust.edu.cn (corresponding author) Keywords: LiMn2O4; Solution Combustion Synthesis; Li-ion battery; cathode materials; nitric acid Abstract: Effect of nitric acid and the burning time on the liquid combustion synthesis of spinel LiMn2O4 has been studied, using lithium nitrite and Manganese acetate as raw a material.
Results and discussion Structures and compositions Fig.1 shows the XRD patterns of combustion synthesized products prepared without nitric acid.

The correction new velocity field will be took as the initial velocity field and re-structure a new stiffness equation, repeated iteration, after convergence it will get the real velocity field , then can obtained various of field variable in the deformation process
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)

Rubber Chemistry and Technology, 1993. 66(5): p. 754-771
Rubber Chemistry and Technology, 1994. 67(3): p. 481-503
[8] Crawford R.J, Appendix A - Structure of Plastics, in Plastics Engineering (Third Edition). 1998, Butterworth-Heinemann: Oxford. p. 413-424 [9] ASTM, D695, in Standard Test Method for Compressive Properties of Rigid Plastics. 2011, American Society of Testing Materials. p. 7

The bright field micrographs and selective area electron diffraction (SAED) patterns were examined by TEM (JEM-2100/JEM-ARM200F) in the characterization of interfacial structures between reinforcement and matrix.
Muller, Analytical and Bioanalytical Chemistry Vol. 374 (2002) p. 635
Marx, Materials Chemistry and Physics Vol. 104 (2007) p. 83

Polyvinyl chloride (PVC) with a K-value 72-71 was supplied by Aladdin Chemistry Co.
,Ltd. and Aladdin Chemistry Co.
In addition, the diffraction peaks at 26.2o indicates the existence of carbon structure [8].

Extraction of Scandium from Red Mud Using ELM with P204 as Carrier Cuizhen WANG1, a, Guangzhu ZHOU1,2,b, Zilong ZHENG1,c 1College of Chemistry & Environmental Engineering, Shandong university of Science and Technology，Qingdao, China 2State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China awangcuizh@163.com, bzhousdust@163.com, czilong.cn@163.com Keywords: Emulsion liquid membrane; P204; Scandium; Red mud Abstract: Scandium is an important rare earth element.
Roi effects the structure stability of ELM and the migration speed of material to be separated (solute or ion).
Industrial and Engineering Chemistry Research, 41 (2002) 5794-5801

Production of Nano-Sized Co3O4 by Pyrolysis of Organic Extracts Vera Serga1,a*, Aija Krumina1,b, Mara Lubane1,c, Gundega Heidemane2,d and Mikhail Maiorov2,e 1Institute of Inorganic Chemistry, Riga Technical University, Latvia 2Institute of Physics, University of Latvia, Latvia avera_serga@inbox.lv, bkruminaaija2@gmail.com, cmaralubane@yahoo.com, dgundeganeidemane@inbox.lv, emaiorov@sal.lv Keywords: Cobalt oxide, nanopowder, extractive-pyrolytic method, nanocomposites Abstract.
Li, Heterogeneous catalysis for green chemistry based on nanocrystals, Natl.
Krumina, Structure and magnetic properties of cobalt ferrite particles produced by method of pyrolytic synthesis, Integr.