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The structure of CS nanoparticles made by crosslinking with TPP was not compact and its application was often limited by its burst release effect.
The amino groups in CS and the aldehyde groups in vanillin may occur Schiff base reaction and form a network structure which can replace poisonous cross-linkers to meet the controlled-release demand.
Folate (FA) was purchased from Sigma Chemistry (Beijing, China).
Acknowledgement The authors gratefully acknowledges the financial support from Structure Evolution of Epoxidized Natural Rubber under Complex Condition via the Rubber Research Institute at Chinese Academy of Tropical Agricultural Sciences.
Chen, Food Chemistry, 121 (2010) 23-28

Coating morphology, composition and structure were determined by means of AFM, FTIR and SEM.
Introduction Research in the field of biomaterials has identified the critical roles that surface topography and localised chemistry play in engendering a successful biological response in vivo [1].
By deliberately changing the morphology of the substrate surface, it is proposed that the structure and composition of the resultant coatings can also be dictated, and the attendant bio-response controlled.
Substrate Ti6Al4V CaP AD CaP AN Ti6Al4V/ Ti CaP AD Ti CaP AN Ti Localised Surface Roughness (Ra) [nm] 24.52 ± 0.41 34.86 ± 0.77 38.06 ± 0.84 38.27 ± 1.02 29.99 ± 0.38 26.39 ± 0.98 The presence of the titanium interlayer (Ti6Al4V/Ti) has conferred a more ordered structure on the CaP coating resulting in a decrease in the Ra value recorded (Fig. 2 a - b).
Hence, these data imply that a combination of controlled surface topological and localised chemistry can be used to optimise the cell-surface interactions of the type required for tissue engineering applications.

The properties and enhanced photocatalytic behaviour of TiO2-RGO nanocomposites Fangjun Wua, Wei Liub*, Jiawen Maic, Jielong Qiud, Shuting Zhange*, Wuyi Zhouf Department of Applied Chemistry, College of Science, South China Agricultural University, Guangzhou 510642, China awfj1007748634@sohu.com, bwlscau@163.com, cmjwcarmen@163.com, dquijl8893@163.com, ezhangshuting@gmail.com , fzhouwuyi@scau.edu.cn *Corresponding author: Wei Liu, wlscau@163.com; Shuting Zhang, zhangshuting@gmail.com.
Due to the unique two-dimensional sp2 carbon network structure and electronic properties, graphene has many outstanding physical properties [3,4].
The diffraction patterns of the five samples match well with the anatase structure of TiO2.
This unique structure feature shall be beneficial for charge transport across the RGO-TiO2 interfaces.
Photochemistry and Photobiology A: Chemistry, Vol. 163 (2004), p. 281 [3] A.

Boinovich2. 1 Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159 pr. 100-letiya Vladivostoku, Vladivostok 690022, Russia 2 A.N.
Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Leninskii pr., Moscow 119071, Russia ae-mail: egorkin@ich.dvo.ru Keywords: Magnesium alloy, Superhydrophobic coating, Plasma electrolytic oxidation, Corrosion resistance, Electrochemical impedance spectroscopy.
Electrochemical Parameters of the Samples (Sample numbers are in accordance with Fig. 2) Sample EC, (V) IC, (A cm-2) Rp, (Ohm cm2) |Z|f=0,005Hz, (Ohm cm2) Uncoated MA8 alloy -1.57 6.6∙10-6 4.0∙103 7.2∙102 PEO-coating -1.54 4.4∙10-7 6.0∙104 6.2∙104 Hydrophobic coating -1.39 1.6∙10-8 1.6∙106 1.4∙106 Superhydrophobic nanocomposite coating -1.21 1.5∙10-9 1.8∙107 2.5∙107 The presence of hydrophobic and superhydrophobic surface layers does not change the position of the inflection in the frequency range 100-10 Hz, due to the presence of the dense sublayer in the PEO-coating’s structure.
Position of the high-frequency time constant that responsible for the morphological features of the surface layer structure shifts towards higher frequencies.
This is also due to the structure of the coating/electrolyte interface (in particular, multimodality of the surface and the presence of an air layer between the surface and electrolyte for superhydrophobic coatings and dense monolayer of hydrophobic agent with high insulating properties for hydrophobic coatings).

This might be due to the liquid OA made a more uniform distribution of the mixed lipids in the process of drying and crystallization, and then formed a denser and compact structure of mixed lipids layer, which had less free volume for water molecule migrations.
It might be due to the increase of mobility and instability of lipid layer structure resulted by increase of OA proportion, this was also mentioned in a previous study [6].
Journal of Agricultural and Food Chemistry, 1997. 45(3): p. 685-689
Voilley, Polarity Homogeneity and Structure Affect Water Vapor Permeability of Model Edible Films.
Journal of Agricultural and Food Chemistry, 1992. 40(3): p. 407-412.

The synthesis of mesoporous Ag/SBA-15 and catalytic reaction of propargylamines via a three-component coupling reaction of aldehyde, alkyne and amine Dong Tian1,2 1 Department of Chemistry, Huainan Normal College, Huainan 232001, China 2 Department of Chemistry , Lakeland College, Sheboygan, WI 53082-0359, U.S.A.
XRD The small angle XRD patterns of mesoporous materials are typical for SBA-15 structure and show no substantial changes after the loading with Ag (Fig. 1).
From the high angle XRD patterns, silver-loading samples show XRD reflections typical of metallic silver with four intense diffraction peaks corresponding to the (111), (200), (220) and (311) lattice planes of the cubic structure of metal Ag (Fig. 2).
Fig. 1 Small-angle Powder XRD patters of Ag/SBA-15 Fig. 2 High-angle Powder XRD patters of Ag/SBA-15 2.2 TEM The TEM images (Fig. 3) illustrated Ag/SBA–15 materials have a two-dimensional (2D) hexagonal structure, and Ag nanoparticles confined into the inner walls of the mesoporous channels were well uniform with estimated average size of 5 nm for these two samples, because the strong confinement effect of SBA–15 pore channels leads to particle size less than its pore size (maximum 5.4 nm calculated by the BJH method).

The structure and shape of the membrane of the welded metal bellows of mechanical seal are essential for improving property of mechanics such as ability of resist press, life span, flexibility, endurance of high temperature [1-3].
Because of its advantages of compensating axial displacement and saving function, it is used mainly for petroleum and chemistry industries, especially it is used on the airproof problem of petroleum chemistry as high temperature airproof pump (spindle) [4-6].
Bellows Bellows (a) Mechanical seal (b) Exploded view of (a) Fig. 1 Structure of the welded metal bellows of mechanical seal There are several types of bellows membrane of mechanical seal.
It is shown, the only 1/4 parts of the bellows membranes are modeled by considering the axisymmetry of the structure and applying it’s axisymmetric boundary condition as shown in Figs. 3(a) and 3(b).

Introduction Because of the advantages of semiconductor laser with its high efficiency, small volume, simple structure and cheap price, with the development of of science and technology, semiconductor laser is widely applied to fields such as information communication, medical treatment and precision machining and measuring areas.
Design of system structure The hardware of the system consists of the central processing unit (CPU), man-machine conversation interface, constant current driver circuit, voltage sampling circuit, current detection circuit, temperature and the temperature control circuit, as shown in figure 1.
The software is designed with modular structure within the top-down approach and progressively thinning method.
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)

Microwave Hydrothermal Synthesis of W-doped CuS Nanoparticle Wenxiang Ye, Quanxin Zhu, Wanqing Xiong, Jian Lei and Xue-Hong Liao* Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization，The College of Chemistry and Life Science, Huanggang Normal University, Huanggang, 438000, Hubei, P.R.China Email:liaoxuehong@sohu.com Keywords: Microwave hydrothermal method; Synthesis; w-doped; Butyl lithium stripping; Copper sulfide Nanoparticle Abstract:The CuS nanoparticles precursor have been synthesized by microwave irradiation, using copper nitrate and thioacetamide(TAA) as raw materials, dodecyl sodium sulfate as surfactants.
Microstructure and phase structure of materials can be effectively controlled by modified doping[6-7].
The experiment improve the Organizational structure and microstructure of CuS to enhance its performance with the doping modification of CuS nanometer powder which is based on the method of hydrothermal synthesis.
It is such this change that made the layered structure of sulfide bend into nanospheres.
References [1] J Wang    B Chen，B Hou,    J Dong, Methods to prepare copper sulfide nano-particles．Chinese Journal of Inorganic Chemistry， 17(2001)275-278 [2] R V Kumar, O Palchik, Y Koltypin, et al.

Introduction Heteropoly acid, as a kind of important solid-super acid catalysts[1], possesses not only the structure feature of coordination complex and metal oxide but also some outstanding properties like strong acidity and redox behavior.
The crystalline structure of 12-phosphomolybdic acid identified by X-ray diffraction (XRD) was showed in fig.1 (b).
Characterization of 12-phosphotungstic acid（H3PW12O40） Figure 2 IR spectroscopy (a) and XRD(b) of PW heteropoly acid The absorption peaks of the products got from this experiment in fig. 2 (a) was 1080cm-1, 982cm-1, 891cm-1, 800cm-1, and the diffraction peaks tested by XRD in fig. 2 (b) was 9-11°，15-23°，26-30°，35-38° , all of which was consistent with normal value of Keggin structure of PW12O403-[10].
Inorganic Chemistry, 9(1970), P.2488 [9]R.L.
Chemistry, 9(1984), p.12 [10]P.