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Synthesis and Application of p-Carboxyarsenazo for Spectrophotometric Determination of Cu(II) in Environment Water Lin Gao1, 2 a, Yanhua Li, Shengjie Chen2, Fang Chen2, Yuanfang Zhang and Junlong Yao3 1Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan, China 2School of Chemistry and Environmental Engineering, Jianghan University, Wuhan, China 3School of Materials Science and Technology Wuhan Institute of Technology, Wuhan, China awoshiyjl2007@163.com Keywords: Spectrophotometry; Copper; p-Carboxyarsenazo; Synthesis.
Structure of CASA Experimental A.

Polysiloxane has become one of the important organo-silicon polymers used in the polymer chemistry due to significant improvements for heat stability, chemical and oxidation resistance and degradation [1].
This was due to the porosity structure of both composites samples.

Biodegradation of nanoparticles in a body from Mössbauer and magnetization measurements Mikhail Chuev1,2,a,*, Valery Cherepanov2, Maxim Nikitin3 and Mikhail Polikarpov2 1Institute of Physics and Technology, Russian Academy of Sciences, 117218 Moscow, Russia 2National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia 3Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia achuev@ftian.ru, *corresponding author Keywords: Magnetic nanoparticles, Mössbauer spectroscopy, biodegradation.
Cherepanov, Magnetic-nanoparticle diagnostics based on analysis of hyperfine structure of Mössbauer spectra in a weak magnetic field, Doklady Phys. 55 (2010) 6-12; M.A.

When the concrete structures suffer from low moisture environment, exposing high temperature or even fire, the water will loss from the cement pastes.
Taylor: Cement chemistry, 2nd Ed.

Since the solid network structure of rice husk is difficult to decompose, the pretreatment of rice husk has become a key step in rice husk utilization [1-2].
Rice husk (Changsha Xianing rice factory), Laminex Super cellulase enzyme (Danisco Shanghai company), the other reagents such as ethanol, glucose, NaOH, sodium citrate, citric acid, 3,5-dinitro salicylic acid, carboxymethyl cellulose(CMC), sodium sulfite, phenol, 25% ammonia, 98% sulfuric acid, sodium sulfite, hydrochloric acid, and re-steamed phenol were bought from local chemistry store.

The chemical structure was characterized by Fourier Transform Infrared Spectrometry (FT-IR).
Seow: Food Chemistry Vol.107 (2008), p.411-418 [3] J.G.

Krok4 . 1 Institute of Physical Chemistry, Polish Academy of Sci., Kasprzaka 44/52, Warszawa, Poland 2 Institute of Single Crystals, National Academy of Sciences, 60 Lenin Ave, Kharkov, Ukraine 3 Faculty of Materials Science and Ceramics, University of Mining and Metallurgy, Mickiewicza 30, Krakow, Poland 4 Faculty of Physics, Warsaw University of Technology, Koszykowa 75, Warszawa, Poland Keywords: lithium manganese spinels, phase transformations, sol-gel method Abstract.
LiMn2O4 is the most stable spinel structure.

ZrSiO4/SiC Oxidation Protective Coating for Carbon/Carbon Composites Prepared by Hydrothermal Electrophoretic Deposition Liu Jiaa, Huang Jian-fengb, Cao Li-yunc, Xin Yud Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an Shaanxi 710021, P.R.
The crystallite structures of the coatings were measured with Rigaku D/max-3C X-ray diffraction (XRD) equipment.

., Hnúšťa, Slovakia) [3] is clay composed of silicates with a layered structure.
Fischer: Physical Chemistry for food-biochemical specialisation [In Slovak: Fyzikálna chémia pre potravinársko-biochemický smer] (STU Bratislava, Slovakia 1996)

Synthesis and Properties of a New Diarylethene Derivative Peijian Yan, Duohua Jiang, Shouzhi Pu*, Weijun Liu Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.R.China pushouzhi@tsinghua.org.cn Keywords: Diarylethene; Photochromism; Fatigue-resistant; Fluorescence.
The structure of 1o was confirmed by 1HNMR. 1H NMR (CDCl3, 400 MHz, TMS): 1.12 (s, 3H, -CH3), 2.50~2.59(m, 1H, -CH2), 2.69~2.79(m, 1H, -CH2), 3.79 (s, 3H, -OCH3), 6.81 (d, 1H, J = 8.4 Hz, phenyl-H), 6.88 (s, 1H, phenyl-H), 7.00 (d, 1H, J = 8.0 Hz, phenyl-H), 7.10 (s, 1H, thienyl-H), 7.23 (t, 1H, J = 8.0 Hz, phenyl-H), 7.30~7.40 (m, 2H, phenyl-H), 7.59 (d, 1H, J = 7.6 Hz, phenyl-H), 7.76 (d, 1H, J = 8.0 Hz, phenyl-H).