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Materials and Methods: 50 recently extracted human maxillary central incisors were endodontically treated and randomly divided into 5 groups of 10 specimens each: Group A: 1.35mm diameter of cast titanium post; Group B: 1.5mm diameter of cast titanium post; Group C: 1.375mm diameter of prefabricated fiber post; Group D: 1.5mm diameter of prefabricated fiber post; Group E: resin restoration.
Materials and methods The following materials and equipments were used in our experiment: Fibio prefabricated fiber post (Anthogyr, France);Titanium (Dentaurum, Germany), Rely X ARC composite resin adhesive and Ketac cem glass-ionomer (3M ESPE, USA); Contax treatment agent, Luxa core resin and etching gel (DMG, Germany), Polyvinyl siloxane impression material (Ivoclar vivadent, Liechtenstein), Parallel muller (Degussa, Germany), Universal testing machine (Zwick, Germany), Electronic vernier callipers(Jiangsu,China). 50 recently (no more than one month) extracted human maxillary central incisors were used in this experiment.
With the development of material science, prefabricated fiber post is paid more and more attention for its unique esthetic appearance, prefect biocompatibility and elastic mudulouser.
In this study,static loading method was used to evaluate the maximum loading strength of the prosthesis to reflect the capability of the post materials.Hayashi [9] found that the results of static loading test can be used for predicting the results of recycling loading.So we use static loading test to get the fracture resistance of the specimens.We can expect good fracture resist capability for maxilla-anterior teeth by using cast titanium posts.
Chinese Journal of clinical rehabilitation, 2010,14 (35): 6512-6516 [7] Al-Omiri MK, Mahmoud AA, Rayyan MR, et al.

As anti-oxidation coating base material, glaze plays crucial roles on anti-oxidation effect.
Experiment Experiment Raw Materials.
SiO2 – Al2O3 – B2O3 – K2O – Na2O system glaze was used as base material.
Acknowledgements This work was financially supported by National Science and Technology Support Program (2007BAE53B01).
References [1] Ming Zhou, Ke Li, Da Shu, Jiao Zhang, Baode Sun and Jun Wang: Journal of Material Science and Technology Vol. 19 (5) (2003), p. 505 [2] L. de Viguerie, G.

There are various reasons for this high value of Rs such as disorders of the organic materials, variety of junction formation in between organic materials and metals.
Materials and Sample Preparation The structure of PSF (3,7-diamino-5-phenylphenazinium chloride) is shown in Fig. 1(a).
Ali, S.IsmatShah, Enhanced performance of P3HT/ (PCBM:ZnO:TiO2) blend based hybrid organic solar cells, Materials Research Bulletin. 75 (2016) 35-40
Church, and Nidal Abu-Zahra*, Effect of ZnO nanoparticles on the power conversion efficiency of organic photovoltaic devices synthesized with CuO nanoparticles, AIMS Materials Science. 3 (2016) 927-937
Tripathi, A Comparative Study of Nanostructured TiO2, ZnO and Bilayer TiO2/ZnO Dye-Sensitized Solar Cells, Journal of Electronics Materials. 44 (2015) 1151- 1159

Assessment of heavy metal contamination and Hg- resistant bacteria in surface water from different regions of Delhi, India, Saudi Journal of Biological Sciences, 25, 1687-1695
Adsortion of heavy metals in residual water using organic materials, Technologies, 18, 109-123
I, Ann Arbor Science, Ann Arbor, MI, 1981, pp. 261–265
  [21] Mittal, A., Kaur, D., Malviya, A., Mittal J., Gupta, V.K., Adsorption studies on the removal of coloring agent phenol red from wastewater using waste materials as adsorbents.
Journal of Colloid and Interface Science. 337 (2009) 345-354.

Introduction Porous silica microspheres materials have been extensively used in chromatogram, adsorption and drug delivery due to their accessible pore size, high specific surface area, high adsorption capacity and easy surface modification[1].
Materials Characterization and Measurements.
Materials Letters, 92(2013)129-131
Journal of Colloid and Interface Science, 286(2005)536-542
[4] H H Wan, L Liu, C M Li, X Y Xue, Facile synthesis of mesoporous SBA-15 silica spheres and its application for high-performance liquid chromatography, Journal of Colloid and Interface Science,337(2009)420-426

Preparation and properties of silicon-corundum-silicon nitride composites Juncong Wei1,2,a, Junbo Tu1,b 1Hebei Province Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and Engineering, Hebei Polytechnic University, Tangshan 063009, China 2University of Science and Technology Beijing, Beijing100083, China atttwjc@126.com,btujunbo@heut.edu.cn Keywords: silicon-corundum-silicon nitride，silicon powder，preparation Abstract.
Part of silicon could remain in the materials.
Experiments in laboratory Raw materials.
The starting materials were brown corundum, white corundum, Si3N4, clay, and silicon powder.
W., Houng B., Journal of American Ceramic Society.

Smart Materials and Structures, 2003,12 ,(2): 204-209
Composites get Materials Today. materials science and engineer ing,2002,5 (1): 30-35
Journal of the Society of Materials Science, Japan,1997,46(2):198-203
Journal of Engineering Mechanics, 1997.123( 9):897-899.

Materials Science Forum. 968 (2019) 82-88
Advanced Materials Research. 897 (2014) 45-48
IOP Conference Series: Materials Science and Engineering (MSE) 708 (2019) 012080
Construction Materials.
Construction Materials.

Materials and procedure.
Since the form of field research was adopted, the materials and experiment tasks were performed along the actual production line.
Acknowledgements This work was supported by grant No. 90924304 from the National Natural Science Foundation, No. 09CGGL008YBB from Social Science Foundation of Zhejiang Province.
Zhang, The review of athletic psychological fatigue problems, Advances in Psychological Science 15 (2007) 524-531
, British Journal of Nutrition 95 (2006) 414-420

One of the most important reason to use the nanoparticles is to enhance materials optical properties.
Experimental Section Materials.
Yang, ACS Applied Materials & Interfaces, 4 (2012) 1118-1125
Bohn, Journal of Colloid and Interface Science, 26 (1968) 62-69
Okuyama, Journal of Colloid and Interface Science, 304 (2006) 535-540