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Valvular leaflets made with polymer materials of porcine or bovine pericardial can be opened or closed by ejected blood.
The properties of hyperelastic material is similar to rubber.
Acknowledgment This work was supported by grants from Natural Science Foundation of State (No: 31170906) and Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Shandong University)Ministry of Education.
References [1] Zhao Shixiong, Luo Zhengxiang.The statue of arificial heart valve [J], Journal of Biomechnical Engineering, vol.8, pp.277-286, 1991
[6] G.Arcidiacono;A.Corvi;T.Severi;Journal of Biomechanics;38(2005)

Science 293 (2001): 269-271
Journal of Materials Chemistry 20 (2010): 831-843
Nature Materials 4 (2005): 546-549
Vapochromic Copper(I) Pyrazolate Complex Materials for Phosphorescent Chemosensors of Ethanol.
Advanced Materials Research 970 (2014): 44-47.

The change under different mulching material was almost unanimous.
Soil water evaporation variation under two mulching material Fig2.
Soil –plant-atmosphere surface water cycle and saving irrigation control [M], science press, Beijing, 1999
Measure of evaporation from wheat and bare soil by using micro-lysimeters[J], journal of hydraulic engineering,1999 (6):45~50
Study on soil water evaporation by micro-lysimeters[J], journal of hydraulic engineering, 2004 (8):114~118

Introduction SOFCs are type of fuel cells which use a solid oxide as the electrolyte material.
SOFC comprises three main parts made of ceramic materials: porous anode, gas-tight solid electrolyte and porous cathode.
This would solve many materials science problems and significantly increase the life of the SOFC.
Schou, The Growth of Gadolinia-doped Ceria by Pulsed Laser Deposition, Applied Surface Science 255 (2009) 5232–5235
Predtechenskii, Development of Solid–Oxide Fuel Cell for Reduced Operating Temperatures, Russian Journal of Electrochemistry 47(4) (2011) 482–487

It can make full use of the two materials’ nature.
The results show that the neotype anchor system can make full use of the materials’ nature and is in good working order.
American Journal of Applied Sciences ,2007,4(3)：122-127 [3] Peter Chromiak, Jiri Al-Darzi, Ai Rong Chen, Yu Qing Liu.
American Journal of Applied Sciences ,2007,4(3)：122-127 [4] Ai Rong Chen,S.Y.K.AL-Darzi.
Asian Journal of Applied Science,2009,2(4)：385-393 [5] S.Y.K.Al-Darzi,A.R.Chen,Y.Q.Liu.

PRODUCTION OF Li2O-ZrO2-SiO2-Al2O3 (LZSA) GLASS-CERAMIC FOAMS BY AERATION AND POLYMERIZATION OF SUSPENSION Ida Eunice Favarin Pozzobom1,2a, Mariana de Souza2b, João Batista Rodrigues Neto1,2c, Fabiano Raupp-Pereira1,2d, Eliandra de Sousa Trichês2,3e, Antonio Pedro Novaes de Oliveira1,2f 1Graduate Program in Materials Science and Engineering (PGMAT) 2Laboratory of Glass-Ceramic Materials (VITROCER) Department of Mechanical Engineering (EMC) Federal University of Santa Catarina (UFSC) Campus Universitário – Trindade, 88040-900 Florianópolis, SC, Brazil 3Department of Science and Technology Federal University of São Paulo (UNIFESP) 12231-280, São José dos Campos, SP, Brazil aida@ifsc.edu.br, bsouzaamarina@gamil.com, cjbrn@gmail.com, draupppereira@yahoo.com.br, eeliandra.sousa@gmail.com, fpedronovaes@emc.ufsc.br Keywords: glass-ceramic foams, gelcasting, porous ceramics.
The morphological, physical and mechanical properties of the consolidated glass-ceramic foams indicated that the process of gelcasting may be a valid alternative to produce porous materials for applications at temperatures lower than 950°C.
Binner: Journal of the European Ceramic Society Vol.19 (1999), p. 2059
Huang: Journal of the European Ceramics Society Vol. 31 (2011), p. 2569
Franks: Journal of the Ceramic Society of Japan Vol. 119 (2011), p. 147

Journal of materials in civil engineering. 12(4) (2000) 314-319
Materials Research. 12(1) (2009) 63-67
International Journal of Polymeric Materials. 57(8) (2008) 797-805
Journal of Applied Polymer Science. 81(13) (2001) 3178-3185
Journal of Applied Polymer Science. 104(4) (2007) 2536-2541

Barker et al.[31] pointed out that low molecular weight materials were present in significant concentrations.
Journal of Membrane Science, 342(1), 88-96
Journal of Membrane Science, 463, 94-101
Journal of Membrane Science, 451, 169-176
Advanced Materials Research, 864, 1482-1485.

The analytical method of analysis is based upon simplifications of process and material behavior.
Journal of Materials Processing Technology, 2005, 164~165(5): 1089-1098 [7] Jinglei Liu, Kcjian Huang, Feng Ruan.
Journal of Plasticity Engineering, 2005, 12(3): 72-75(In Chinese) [8] M.
International Journal of Mechanical Sciences, 2007, 49(5): 533-553 [9] Xiaogang Tong.
Journal of Netshape Forming Engineering, 2011, 3(6): 80-84(In Chinese)

By determining the necessary work, unnecessary work and shape factors β[2] and other parameters, we can obtain materials’ fracture properties.
Due to its simplicity of experiment and data analysis, many domestic and foreign scholars apply this method to a variety of materials in the study of fracture.
So, in order to ensure the consistency, we use the same batch of the raw materials, the same processing equipment and experiment under the same external environment to process and do the experiment.
[4] Y.W.Mai, et al: Journal of Polymer Science Part B: Polymer Physics.
[5] Chang Wu-jun, et al: Introducing Journal of China Ordnance.