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Morphological Comparison of PLGA/Gelatin Scaffolds Produced by Freeze Casting and Freeze Drying Methods Ali Zamanian1,a*, Farnaz Ghorbani2,b, Hanieh Nojehdehian3,c 1Nanotechnology and advanced materials Department, Materials and Energy Research Center, Karaj, Iran. 2Biomedical Engineering Department, Science and Research Branch, Islamic Azad University, Tehran, Iran. 3Department of Dental Materials, Dental School, Shahid Beheshti University of Medical Science, Tehran, Iran aa-zamanian@merc.ac.ir, bFarnaz_ghorbani.1991@yahoo.com, chanieh.nojehdehyan@gmail.com Keywords: Lactic -co- Glycolic Acid; Gelatin; Scaffold; Freeze Casting; Freeze Drying.
Lemons, "Biomaterials Science", An Introduction to Materials in Medicine, 2nd Ed
Zheng, "Electrospinning of PLGA / Gelatin Randomly Oriented and Aligned Nanofibers as Potential Scaffold in Tissue Engineering", Materials Science and Engineering C 30, 2010, 1204-1210
Qian, H. zhang, "Controlled Freezing and Freeze Drying: a Versatile Route for Porous and Micro-/Nano - Structured Materials", Journal of Chemical Technology and Biotechnology, 172-184, 2010 [10] K.
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At present, many researchers studied on the proton exchange membrane materials and structure.
In the simulation model, MS (Materials Studio) software was used.
Acknowledgements This work gains the support from the National Natural Science Foundation of China (51176131) and the Supporting Foundation of Liaoning Province Distinguished Visiting Professor of China.
[9] Sun H, Sun Z, Wu Y, Proton transfer mechanism in perfluorinated sulfonic acid polytetrafluoroethylene, International Journal of Hydrogen Energy. 37 (2012) 12821-12826
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Preface This book has 44 selected publications out of 170 papers presented at the International Conference on Materials Science and Engineering: Recent Advances and challenges (ICMSE-RAC 2018) held on 11-13 March at the Egypt-Japan University of Science and Technology, Alexandria, Egypt.
The selected papers were peer reviewed by international reviewers under Key Engineering Material Journal published by Scientific.net.
The purpose of this book is to provide one volume for the scientific community on the most recent advances and state of the art in the field of materials Science and engineering.

Influence of Structure and Property of Plasticizers on Viscosity and Aging Process of PVC Plastisols XU Guo-min a , Ji Yu-bi b, Yang Zhao c, Tan Hong* National Engineering Research Center for Compounding and Modification of Polymer materials, Guiyang 550014, Guizhou, China ( aEmail: xuguomin@nercp.org.cn, bEmail:Yubi.ji@163.com,cYZhao@163.com *Email:jenny2000820@sina.com(corresponding author)) Keywords: PVC;Plastisol;Plasticizer;viscosity.
References [1] N.Nakajima, E.R.Harrelly, Rheology of PVC Plastisol: Particle Size Distribution and Viscoelastic Properties, Journal of Colloid and Interface Science. 238(2001)105-115
Ferna´ndez-Berridi, Application of Fourier Transform Infrared Spectroscopy in the Study of Interactions Between PVC and Plasticizers: PVC/Plasticizer Compatibility versus Chemical Structure of Plasticizer, Journal of Applied Polymer Science. 101(2006)1731-1737
Lopez, Substitution of Di(2-ethylhexyl) Phthalate by Di(isononyl) Cyclohexane-1,2-Dicarboxylate as a Plasticizer for Industrial Vinyl Plastisol Formulations, Journal of Applied Polymer Science.104(2007)1215
Deanin, Concentration Dependency of Interaction Parameter Between PVC and Plasticizers Using Inverse Gas Chromatography, Journal of Applied Polymer Science. 91(2004) 146

Experimental Procedure Experimental Materials The experimental materials include silty clay, copper sulfate solution and calcium chloride.
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(3) The reasonable loading formulas are deduced respectively for the pressure-dispersive grout anchor with 2 or 3 load-bearing bodies based on the theory of mechanics of materials.
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Materials and methods Plant materials and growing conditions.
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[27] Ivanov I.I.: Russian Journal of Plant Physiology, 56(2) (2009) 219-223.

References [1]Xinhong Qiu, Zhanqiang Fang, Bin Liang,et al.Degradation of decabromodiphenyl ether by nano zero-valent iron immobilized in mesoporous silica microspheres [J].Journal of Hazardous Materials,2011,193(15): 70-81
European Journal of Pharmaceutical Sciences,2010,39(5): 412-420 [3]Mahendra P.
Journal of Magnetism and Magnetic Materials, 2010,322(16):2439-2445 [7]Qin Qingdong, Ma Jun, Liu Ke.
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Nature Materials, 2005. 4(5): p. 366-377
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Differences in Characteristic Properties of Silica Sands from Neighbouring Deposits Martina Bašistová1,a*, Petr Lichý1,b 1Department of Metallurgical Technologies, VSB-Technical University of Ostrava, Faculty of Materials Science and Technology, 17.
Materials and Methods Materials.
Vaniya, Use of Silica Sand as Fine Material in Concrete, International Journal for Scientific Research & Development. 3 (2015) 745-751
Liang, Utilization of desert sand in the production of sustainable cement-based materials: A critical review, Construction and Building Materials. 327 (2022) 127014. https://doi.org/10.1016/j.conbuildmat.2022.127014
Lu, Stress-Induced Β→ Α-Cristobalite Phase Transformation in (Na2O+ Al2O3)-codoped Silica, Materials Science and Engineering: A. 328 (2002) 267-276. https://doi.org/10.1016/S0921-5093(01)01703-8