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MgO , as the simplest oxide in terms of geometric and electronic structure, is among the oxides that have been most extensively studied with respect to hydration both experimentally and theoretically, it has a typical example of an ionic and insulating oxide, and this oxide has a simple NaCl structure and is characterized by morphological defective features such as steps, corners or reverse corners, which are known to be dominant irregularities at the surface of oxide polycrystals as well as thin oxide films[1].
Most of the chemistry at the surface of MgO is due to the presence of highly reactive defect sites, these sites can be morphological defects such as edges, kinks, steps, and terraces, where the surface ions are low-coordinated, or they can correspond to cation or anion vacancies.
RESULT AND DISCUSSION 3.1 MgO suspensions in ethanol and in water Fig.1 Surface morphology of MgO Fig.2 MgO particle distribution in ethanol and water Several experimental and theoretical studies have investigated the properties of the water/MgO interface，the diversity in the data probing the nature of this interface indicates MgO is a “structure sensitive”material whose properties are very dependent on the experimental approach and sample preparation procedures used.

Study on Preparation and Properties of High Permeability Polyurethane Composites with Low Swelling Lin Wang1, a, Fang Liu2, b, Si Tong Cao1, c 1Department of Chemistry and Textile Engineering, Jiaxing University, No.56, Yuexiu Road (South), Jiaxing, People’s Republic of China 2Department of Ship and Building, Nanyang Vocational Technical Institute, No.839, Tanghui Road, Jiaxing, People’s Republic of China awanglin30425367@163.com b623401231@qq.com ccaost168@yahoo.com.cn Key Words: Permeability, Swelling, Polyurethane, Composites Abstract.
It can be attributed to asymmetric structure of IPDI and IPDA, which causes the PU bulk to have a large number of passageways for water molecules to diffuse.
This evidence indicates that the moisture permeability of PU is not only dependent on the PEG content, but also mainly on the molecule structure of PU.
The asymmetric structure of polymer is beneficial to diffuse moisture.

Synthesis and Properties Study of 1-(2,4-dimethoxyl-5-pyrimidinyl)-2-[2-methyl-5-(4-n-pentylbenzene)- 3-thienyl] perfluorocyclopentene Jingjing Liu, Hongjing Jia and Shouzhi Pu* Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University Nanchang 330013, P.R.China pushouzhi@tsinghua.org.cn Keywords: Diarylethene, Photochromism, Pyrimidine, Fluorescence.
The photochromic process of diarylethenes is based on a reversible transformation between the open-ring isomer with a hexatriene structure and the closed-ring isomer with a cyclohexadiene structure.
The structure of diarylethene 1o were confirmed by 1H NMR (400 MHz, CDCl3, TMS): δ 0.84 (t, 3H, J = 8.0 Hz, -CH3), 1.18-1.27 (m, 4H, -CH2-), 1.53-1.57 (m, 2H, -CH2-), 1.96 (s, 3H, -CH3), 2.54 (t, 2H, J = 8.0 Hz , -CH2-), 3.66 (s, 3H, -OCH3), 3.94 (s, 3H, -OCH3), 7.11 (d, 2H, J = 8.0 Hz, benzene-H), 7.20 (s, 1H, thiophene-H), 7.36 (d, 2H, J = 8.0 Hz, benzene-H), 8.27 (s, 1H, pyrimidine-H).

The fatigue damage of structures can be estimated by the crack length of this fatigue sensor without electrical signal.
However, there are some problems that the applied stress or the fatigue cyclic number must be measured by another system and the fatigue characteristics must be same between the sensor and the structure.
A new sensing method called "smart stress memory patch" to monitor the fatigue damage of structure has been proposed and the measurement principle was explained in the previous paper [3].
Acknowledgement The present research is supported in part by a Grant for 21st Century COE Program "Human-Friendly Materials based on Chemistry" from the Ministry of Education, Culture, Sports, Science, and Technology of Japan.

Effective mixing has been approached by several methods, including diffusion-limited speed of mixing[14], generation of secondary flow with three-dimensional structures[15], and utilization of Dean"s vortex.[16] On the centrifugal platform, proposed mixing methods include the Coriolis force [17], magnetic beads[9], and frequent reversal of the direction of spinning[9, 18, 19].
The microfluidic structure was made by cutting the pressure-sensitive adhesive layer with a cutting plotter (CAMM-1 CX24, Roland).
In addition, the fluidic structure is very simple and can be manufactured at low cost.
Analytical Chemistry, 2004. 76(12): p. 3373-3386. 2.

Nanorod polyaniline presents a mesh structure which may cause remarkable rising of conductive passways and lead to highly conductivity, and the network nano-rod and porous morphology may enable effective and rapid access of the electrolyte and storage in three dimensions, which results in high charge storage and fast charge/discharge processes.
The reason may be due to: nanorod polyaniline with small diameter produces a porous three-dimensional network structure, which may have excellet active sites, leading to considerable capacitance; this kind of polyaniline have excellent conductivity, which may accelerate the charge-transfer and reduce the internal resistance of the electrode, and makes decrease of the specific capacitance is more solwly even at high discharge current density.
Impedance spectra of resulting electrode completely reduced state (leucoemeraldine, LE); LE undergoes partial oxidation at about 0.20V and its structure changes to emeraldine (EM); EM undergoes oxidation and produces pernigraniline (PE) if the potential is further positively shifted to about 0.75V.
MacFarlane, Maria Forsyth, Dong-Won Kim: Journal of Power Sources vol. 171 (2007), p. 1062-1068 [6] Hongyu Mi, Xiaogang Zhang, Sudong Yang, Xiangguo Ye, Jianming Luo: Materials Chemistry and Physics vol. 112 (2008), p. 127-131 [7] Wei-Chih Chen, Ten-Chin Wen: Journal of Power Sources 117 (2003), p. 273-282 [8] WANG Qin, LI Jian-ling, GAO Fei, LI Wen-sheng, WU Ke-zhong, WANG Xin-dong: New Carbon Materials vol. 23 (2008), p. 275-280 [9] Chi-Chang Hu, Wen-Yar Li, Jeng-Yan Lin: Journal of Power Sources vol. 137 (2004), p. 152-157 [10] Bin Dong, Ben-Lin He, Cai-Ling Xu, Hu-Lin Li: Materials Science and Engineering B vol. 143 (2007), p. 7-13 [10] J.

Hu 1*,g 1 School of Stomotology, Peking University, Beijing 100081, China 2 School of Basic Science, Peking University, Beijing 100083, China 3 School of Stomatology, Jiamusi University, Heilongjiang 154002, China 4 The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer, Beijing University of Chemistry and Technology, Beijing 100029, China a anniemmx@yahoo.com.cn, bmeifang@bjmu.edu.cn, clidan721225@163.com, d yangxp@mail.buct.edu.cn, esuig2004@yahoo.com.cn, fdengxuliang@vip.sina.com, g kqhuxy@126.com Keywords: Electrospinning; Poly(L-lactic acid); Nanofiber; Dental pulp stem cell; Periodontal cells; Dental tissue engineering Abstract.
Results and discussion The morphological structure of electrospun PLLA/HA fibers obtained from the polymer solution are shown in Figure 1a.
Further, it showed an extensive spindle-like outgrowth on all the scaffolds, which provided a morphological evidence of DPSCs differentiation.[4,8] As an important aspect, it can be a b c d Figure 1. a) The morphological structure of electrospun PLLA/HA fibers obtained from the polymer solution.
It also shows the interaction between the cells.[11-13] It is obvious that some filamentlike structures extend out from the cell body and attach to the nanofibers.

In this and many subsequent studies, luminescent particles, were applied as paint to the surface of the structure of interest and the surface temperature determined.
Furthermore, they are generally selected for test purposes and not for long-term high-temperature, chemical compatibility with the object or structure they are used with.
Our work has focused on identifying luminescence sensors based on principles of crystal chemistry, spectroscopy and phase equilibria that can be used in conjunction with yttria-stabilized zirconia (YSZ), the current coating material of choice or one of the alternate oxides.
Conclusions Non-contact temperature measurements in a variety of oxides can be made by utilizing the temperature-dependent luminescence lifetime of characteristic luminescence from dopants incorporated within the crystal structure of the oxide.

., Vladivostok 690091, Russia 2Institute of Chemistry FEB RAS, 159, pr. 100-letya Vladivostoka, Vladivostok 690022, Russia avasileva.ms@dvfu.ru, brudnevvs@ich.dvo.ru Keywords: plasma electrolytic oxidation; titanium; manganese oxide; acetonitrile; nanostructured coating; catalyst; photocatalyst Abstract.
The objects resemble droplets (or "hedgehogs") with a developed structure in the form of leaf formations, as in the case of coatings obtained in electrolyte.
Krysmann, Efficient catalyst with controlled porous structure obtained by anodic oxidation, Appl.
Plasma-electrolytic formation, composition and catalytic activity of manganese oxide containing structures on titanium, Appl.

Therefore, it is necessary to resort to the addition of one or more metals to the base element, to change its crystalline structure and thus their physical and chemical properties.
Experimental details Coating Application The [TiN/TiCN]n multilayers were deposited on silicon substrates with crystallographic orientation (100) for the purposes of measuring their structure, morphology and chemical composition, and on stainless steel AISI 316 LVM substrates for measurement of degradation properties.
This behavior is characteristic of multilayered structures [10][11]; as a consequence of increasing bilayer number (n), the density and the interface number are also increased for a thoroughly uniform thickness of the multilayered system; thus, the number of pores is reduced.
Amaya: Journal of Physics and Chemistry of Solids, Vol 71 (2010), p. 1754