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For a long time many experts and scholars have researched on rocks and minerals, chemistry, sedimentary environment, provenance, mineralization age, and mass balance calculation of the bauxite [1-15].
The discovery of colloidal structure indicates colloidal transport is one of mode of transport for WZD bauxite.
Leaching process Color, structure, grade and geochemistry of WZD bauxite have a vertical regularity of alternation [6, 15].

Introduction Many methods have been used to form biodegradable nanohydroxyapatite/collagen (nanoHA/COL) composites, inspired from the ingredients and structure of hard tissues [1].
The orthogonal design of experiments is widely applied to scientific investigations such as analytical chemistry and process engineering.
Results and Discussion The structure of L9 (3 4) orthogonal design, the results of bending strength of the composites and the effects of each level of three factors on bending strength are shown in Table 2. k1, k2, and k3 are, respectively, obtained by averaging bending strength of the composite at level 1, level 2, and level 3 of different factors.

Synthesis, Photochromism and Fluorescent Switch of 1-(2-methyl-1-benzofuran-3-yl)-2-(2-methyl-5-(4-benzylamine)-3-thienyl)perfluorocyclopentene Zhaoyan Tian, Shiqiang Cui* and Shouzhi Pu Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.R.China cuisq2006@163.com Keywords: Diarylethene; Synthesis; Photochromism; Fluorescence; Kinetics.
The structure of diarylethene 1o was characterized by 1H NMR spectroscopy. 1NMR spectra were recorded on Bruker AV400 (400 MHz) spectrometer with CDCl3 as the solvent and tetramethylsilane as an internal standard. 1H NMR (400 MHz, CDCl3), δ (ppm) 1.26 (d, 2H, J = 8.0 Hz), 1.766 (s, 3H), 2.044 (s, 3H), 3.808 (s, 2H), 7.035 (s, 1H), 7.079 (d, 1H, J = 8.0 Hz)， 7.241 (m, 2H), 7.429 (d, 1H, J = 8.0 Hz), 7.342–7.384 (d, 4H, J = 8.0 Hz).
Its structure was measured by NMR.

Study on Parrifine Removal Additive of High Wax Crude Oil ZHANG HONG 1, a 1Shanghai University of Engineering Science College of Chemistry and Chemical Engineering, Shanghai 201620, China azhanghonglindi@163.com Keywords: high wax crude oil; parrifine removal additive; consist property; Abstract.
The pour point depressant can change the original state of paraffin crystallization difficult to form network structure to improving the liquidity of the crude oil[3].
So pour point depressant can inhibit the three-dimensional network structure the low-temperature fluidity of crude oil was improved.

Influence of Rubber Particle Size on Functional Properties of a Composite Material Based on Scrap Tires and a Polymer Binder Laimonis Malers* and Agnija Cirvele Institute of Polymer Materials, Faculty of Material Science and Applied Chemistry, Riga Technical University, Paula Valdena 3/7, Riga, Latvia, LV-1048 *laimonis.malers@.rtu.lv Keywords: polymer binder, rubber particles size, mechanical properties, composite material.
These differences must be explained by different structure of composite material depending from rubber particle size and their mutual arrangement in material.
Visualization of material sample surfaces by optical microscope (Fig Nr.1-5) demonstrate different structure and mutual distribution of rubber particles in the composite material and therefore different compactness and density.

A study of the inhibition of iron corrosion by glutamic acid derivatives self-assembled films Zhe Zhang1, a, Gang Yan1, b, Le Ruan1, c 1College of chemistry and bioengineering, Guilin University of Technology,Guilin 541004, PR China azhangzhe@glite.edu.cn, b736546147@qq.com, cruanle78@sohu.com, Keywords: Iron; EIS; glutamic acid; self-assembled films.
Experimental 2.1 Chemicals Fig. 1 The structures and names of glutamic acid derivatives, a: N-Phthaloyl-L-glutamic Acid, b: N-(1-oxooctadecyl)-L-glutamic acid, c: N-Benzoyl-L-glutamic Acid .
The structures of the glutamic acid derivatives are shown in Fig. 1.

A New Fluorescent Material of Mg (II) Complex with Salicylaldehyde- 4,4’-diaminodiphenylamine Xi-Shi Tai 1, a 1 College of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, P.R.
Which is not only because of diverse structures, but also the potential applications, such as catalysis [3], as medicine, as well as electrochemistry, magnetism, and luminescent probes in particular [4, 5].
Fig. 1 Suggested structure of Mg (II) complex material Experimental Materials and instrumentation Salicylaldehyde, 4, 4’-diaminodiphenylamine were received from Aldrich Chemicals Co. and used without further purification.

For more sophisticated device structures mastering the SiC etching processes is generally demanding.
To define the starting point for the wet etch experiments a sample without implantation was analyzed with AFM and TEM to determine the over-etch depth into the SiC from the TEOS hardmask structuring.
Etch chemistry Etch time [h] Total etch depth [nm] HF:HNO3 based 1 226 HF 50% 3 10 TMAH 25% 4 8 KOH 50% 4 7 Based on these results, the wet etch solution for further etching experiments of 4H-SiC will be based on HF:HNO3.

The X–ray measurements of the crystal structure were done with a Phillips diffractometer.
This behavior can be attributed to a ferrimagnetic structure of magnetic moments in this type material.
Murty: Materials Chemistry and Physics, Vol. 126 (2011), p. 295 [2] G.

Ionic liquid-based luminescent Gd2SiO5: Tb submicro-meter phosphors Yuhui Zheng, Xiaoting Ni and Qianming Wang1 School of Chemistry and Environment, South China Normal University, Guangzhou 510006,P.
Scheme of Gd2SiO5: Tb and structure of ILs In the last years, ionic liquids as a new class of solvents were introduced into the construction of luminescent hybrid materials [7-8].
The micro structure was very homogenous and in good order.