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Introduction Hydroxyapatite (HA) ceramic with the chemical composition Ca10(PO4)6(OH)2 is one of the most widely used as materials for bone grafting.
Materials and methods Synthesis of HA from Gypsum Waste Gypsum waste (Gw) was separated from impurities.
Laksono, J.Triyono, Synthesis and characterization of hydroxyapatite powder from natural gypsum rock, Advanced Materials Research 893 (2014) 56-59
Rao, T.S Kannan, Synthesis and sintering of hidroxyapatite-zirconia composites, Material Science and Engineering C 20 (2002) 187-193
[8] German, R.M., Powder Metallurgy Science, 2th Edition, Metal Powder Industries Federation, New Jersey. 1994

Evaluation of Organic Thin Film Solar Cells Using 3-Diode Equivalent Circuit Model with Inverted Diode Yuya Sakurada1,a, Yasuyuki Ota1,b, Hiroki Watanabe2, Hideyuki Murata2,c and Kensuke Nishioka1,d 1Faculty of Engineering, University of Miyazaki, 8892192, Miyazaki, Japan 2Graduate School of Materials Science, Japan Advanced Institute of Science and Technology, 9231292, Ishikawa, Japan ata10009@student.miyazaki-u.ac.jp (corresponding author), by-ota@cc.miyazaki-u.ac.jp, cmurata-h@jaist.ac.jp, dnishioka@cc.miyazaki-u.ac.jp Keywords: Organic solar cell, Equivalent circuit, 3-diode model with inverted diode, Heat treatment Abstract.
So far, the power conversion efficiency has steadily improved through the use of new materials and device structures.
However the electrical properties of bulk hetero junction organic solar cells depend on many factors such as the formation of interpenetrating network of p-type and n-type materials, and it is difficult to analyze the properties by the simple equivalent circuit model.
The cell consisted of PEDOT:PSS (poly(3,4-ethylenedioxythio phene):poly(styrenesulfonate)) as electrically conducting polymer molecule, P3HT(poly (3-hexylthiophene)) as p-type polymer molecule, PCBM([6,6]-phenyl -C61 butyric acid methyl ester) as n-type material of fullerene derivatives.
Charles: Microelectronics Journal, 39 (2008) 1173-1180

These convectional fluids are lower thermal conductivity than that of solid materials.
Journal of Heat Transfer, 125, (2003): 151-155. https://doi.org/10.1115/1.1532008 [3] Xuan, Y.M, and Roetzel, W, “Conceptions for heat transfer correlation of nanofluids.”
International Journal of Heat and Mass Transfer, 43, (2000): 3701–3707. https://doi.org/10.1016/S0017-9310(99)00369-5 [4] Xuan, Y., Li, Q, “Investigation on convective heat transfer of nanofluids.”
Journal of Thermal Analysis and Calorimetry, 135, (2019): 305–323. https://doi.org/10.1007/s10973-018-7093-2 [10] Akbari, O.
Dharma Rao: Experimental determination of turbulent forced convection heat transfer and friction factor with SiO2 nanofluid, Experimental Thermal and Fluid Science 51(2013)103-111 [17] Yimin Xuan, Wilfried Roetzel: Conceptions for heat transfer correlation of nanofluids, International Journal of Heat and Mass Transfer 43(2000)3701-3707 [18] C.W.

China Civil Engineering Journal, 2006, 39(2): 46-52.
Journal of Southeast University, 2003, 33(5): 544-548.
Journal of Bridge Engineering, 2009, 14(4): 257-269
Key Engineering Materials, 2014b, 574, 77-84 [16] Fan XP & Lu DG.
School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, China, 2010.

Doll, European Journal of Innovation Management, 4 (2001) 95
Tippett, Engineering Management Journal, 20 (2008) 36
Barclay, IEE Proceeding Science Technology 149 (2002) 105
Freel, International Small Business Journal, 18 (2000) 60
Paswan, Journal of Marketing, 72 (2008) 132.

Effect of Random Defects on Dynamic Response of Honeycomb Structures Zhijun Zhenga and Jilin Yub CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui 230026, P.
Introduction Cellular metals have shown great potential applications as energy-absorbing materials.
Experimental investigation is the essential means to obtain the mechanical behavior of materials, but there are some limitations associated to dynamic tests of cellular metals [1].
Results and Discussion Different deformation patterns can be found in the dynamic crushing of cellular materials.
At a very high impact velocity, a progressive layer-by-layer collapse band forms from the impact end, and the deformation occurs like a shock wave propagating through the cellular materials.

Static, dynamic and acoustical properties of sandwich composite materials.
Beijing: Published by Science Press, 2001
Analytical “Study of the Equivalent Elastic Parameters for a Honeycomb Core,” Journal of Aeronautical Materials. 2004, 24(3): 26-30
Mechanics of Materials. 2004, 36(8): 691-713
J. of Mechanical Science. 2004, 46: 1489-1515

Novel method of developing nano silica coated alumina micro abrasives using Silicon nanoparticles generated from spark erosion as the source Ahmad FAROOQ1,a*, Ali Abd El-Aty1,2,b,* 1Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, People’s Republic of China 2Department of Mechanical Engineering, Faculty of Engineering, Helwan University, Cairo, Egypt afarooq14b@imr.ac.cn, babdelaty14b@imr.ac.cn *Corresponding author Keywords: alumina abrasives, silica coating, silicon nanoparticles, spark erosion.
Some of the energy is transferred to the electrodes and results in heating highly localized regions of the electrodes above their melting temperatures, ejecting molten and vaporized materials from them.
International journal of Nano medicine, 8 (2013): 4053
Materials Science and Engineering: A, 395.1(2005): 148-152
Corrosion science, 49.8, (2007), 3325-3332.

Materials and Methods Raw materials and reagents.CCR which contains 48.5% cellulose, 21.3% lignin, 23.5% hemicellulose and 6.7% other compositions, was supplied by Puyang Pengcheng Chemical Co., Ltd, China.
The concentration of glucose produced from CCR by the crude cellulase was determined by a SBA-50 Biological Sensor Instrument (Shandong Academy of Sciences, China).
Goldemberg, Ethanol for a sustainable energy future, Science. 315 (2007) 673-676
Qu, Progress in basic and technological research of enzyme system for lignocellulosics biodegradation, Journal of Shandong University (Natural Science). 46 (2011) 160-170
Wu, Cellulase Production by Submerged Fermentation Using Biological Materials of Corncob residue with Aspergillus niger FC-1, Advanced Materials Research, 648 (2013) 116-119

Izawa: Journal of Materials Processing Technology, Vol. 155-156 (2004), p. 1662 [2] Z.
Materials Science and Technology, Vol. 25, (2009), p. 599 [3] D.
Zhen: Materials Science and Technology, Vol. 22 (2006) p. 1489 [7] Z.
Avery: Transactions of the American Society of Materials, Vol. 57 (1964) p. 980 [9] R.
Todd: Materials Science Forum, Vol. 551-552 (2007), p. 357