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They may have a great potential in application related to sensors, catalyst, coating materials, optical devices, pigments, dielectric ceramics, bonding agents, and miniaturization of devices [1,2].
Among them, the sol gel synthesis is a powerful method for the design of new materials based on the hydrolysis and condensation reactions of molecular precursors such as metal alkoxides[6].
Mech. 4, (2001), p. 134 [3] Mayo M.J., High and low temperature superplasticity inNanocrystalline materials, NanoStmctured Materials, Vol. 9. (1997) p. 717 [4] Mayo M.J., Hague D.C., Using superplastic flow to process nanocrystalline ceramics, The Minerals, Metal and Materials Society (1997), p. 31 [5] Mayo M.J., Hague D.C., Chen D.
-J., Processing nanocrystalline ceramics for applications in superplaticity, Materials Science and Engineering A166 (1993), p. 145 [6] Mackenzie, J.D.
,Sol-Gel Research-Achievements Since 1981 and Prospects for the Future, Journal of Sol-Gel Science and Technology 26 (2003), p. 23 Fig.5.

Halimi1, d 1 Laboratory of Characterization and Instrumentation, Technical and Scientific Research Center for Welding and Control, BP 64, Road of Dely Ibrahim, Cheraga, Alger, Algeria 2 Physics Laboratory of Materials, University of sciences and technology Houari Boumedienne BP 32, El Allia - Bab Ezzouar, 16111 Algiers, Algeria asatourabida@yahoo.fr, bfboubenider@yahoo.fr, calibadidi@yahoo.fr, dhalimir@yahoo.fr Keywords: Lamb waves, Sandwich structure, Dispersion curves, Displacements.
At present, many works are dedicated to the control of composite materials [1, 2, 3].
Sandwich composites are no homogenous and anisotropic materials, so, the attenuation of ultrasonic waves increases very much at high frequencies.
Rose: Journal of Composite Materials, Vol. 37, No. 10/2003 [3] N.
Takatsobo: Composites Science and Tchnology Vol. 64 (2004), p. 1293-1300 [4] R.

Methods: Fruit body, collected from Heilongjiang province, is used as the material, and the mycelium is isolated and radiated under ultraviolet.
Materials and Methods 1.1 Source and isolation of T. matsutake strain Fruit bodies of T. matsutake were collected from State Natural Reserve of T.matsutake in Fenghuang Mountain, Heilongjiang Province.
Acknowledgement: This research is funded by Jiangsu Agricultural Science and Technology Support Program (BE2009308-4) and Natural Sciences foundation of Jiangsu Province (BK2009660).
Chinese Science Bulletin. 52(9):1212-1216
Journal of Huazhong Agricultural University, 16(3): 16(3): 272-276(in Chinese with English abstract) [16] Yamada A, Kobayashi H, Murata H(2003).

Fig.2 Milling model Materials constitutive equation.
References [1] Gwo-Lianq Chern: Materials Processing Technology.
Vol. 509(1) (2011), p.371 [3] Yan Zhang, Xinmin Lai, Ping Zhu, Wurong Wang: Materials & Design.
Joshi: Materials Processing Technology.
Vol. 500 (2012), p.146 [6] Tamer Ozben, Erol Kilickap: Materials Processing Technology.

Experimental Procedure Materials.
Melamine 99.0% (Merck), 37% formaldehyde solution (Loba chemie), 99.9% Methanol (RCI Labscan), 98% NaOH pellets (Sigma-Aldrich) and 37% Hydrochloric acid (Lab-Scan Analytical Sciences) were used as received.
The curing time is also important to the structural stability of the cured materials.
This work also paves a new route towards mesoporous melamine resins materials and even new advanced porous composite materials with cheaper and more accessible starting reagents.
Polymer Journal. 45 (2013) 413–419

Materials and Methods Area of Study Teluk Batik Beach is situated about 6.5km from the town of Lumut, where thousands of visitors are welcomed, on the western coast of Perak State, Malaysia.
Journal of Chemistry, 13. https://doi.org/10.1155/2017/5178937 [3] Balogun, A., Yekeen, S.
Environmental Science & Technology, 42(24), 9210–9216. https://doi.org/10.1021/es8022623 [5] Chouksey, M.
International Journal of Recent Advances in Multidisciplinary Research, 6(3), 4713–4718.
The International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, 43, 1271–1276

Materials and Methods 2.1.
Experimental device for the preparation of plants and different materials used in the laboratory.
Reiffsteck, “Etude expérimentale du transfert hydrique dans un sol initialement non saturé”, European Journal of Environmental and Civil Engineering, vol. 13, no 10, p. 1221–1261, 2009, doi: 10.1080/19648189.2009.9693187
Šejna, “Recent Developments and Applications of the HYDRUS Computer Software Packages”, Vadose Zone Journal, vol. 15, no 7, p. 1–25, jul. 2016, doi: 10.2136/VZJ2016.04.0033/246468
Th. van Genuchten, “Modeling Nonequilibrium Flow and Transport Processes Using HYDRUS”, Vadose Zone Journal, vol. 7, no 2, p. 782–797, maio 2008, doi: 10.2136/vzj2007.0074

Influence of Structural-Phase State on Low-Temperature Superplasticity of Ultrafine-Grained Titanium Alloys Ilya Ratochkaa, Evgeny Naydenkinb*, Ivan Mishinc, Olga Lykovad Laboratory of Materials Science, Institute of Strength Physics and Materials Science SB RAS, Akademicheskii 2/4, Tomsk 634055, Russia aivr@ispms.tsc.ru, bnev@ispms.tsc.ru, cmishinv1@yandex.ru, dlon8@yandex.rul Keywords: Titanium alloys, ultrafine-grained structure, severe plastic deformation, low-temperature superplasticity.
Aerospace Materials.
Mouritz, Introduction to Aerospace Materials, Woodhead Publishing in Materials, 2012
Varlamova, The effect of interfaces on mechanical and superplastic properties of titanium alloys, Journal of Materials Science, 52(8) (2017) 4164-4171
Pshenichnyuk Superplasticity and grain boundaries in ultrafine-grained materials, Woodhead Publishing in Materials, 2011

Nuhu-koko, The Use of Palm Kernel Shell as aggregate for Concrete, Paper presented at 21st Annual Conference of Material Testing, Control and Research.
Oke, Development and Performance Evaluation of Indigenous palm kernel dual processing machine, Journal of Engineering and applied sciences 2(4)(2007) 701-705
Asiam, Determination of some Design Parameters for Palm nut Crackers, European Journal of Scientific Research. (38)(2)(2009) 315-327
Oke, Nutritional properties of the protein of some Nigerian Oil seed, Journal of African food chemistry, 32(1984)822-825
Koya, Palm Nut Cracking under repeated impact load, Journal of Applied Sciences 6 (11) (2006) 2471 – 2475

Procedia Environmental Sciences, 2012, 13: 2210–2221
International Journal of Climatology, 2007, 27(12): 1547–1578
Supporting material of the IPCC available from the DDC of IPCC TGCIA, 2004
Hydrogeology Journal, 2011, 19(8): 1563–1575
Hydrogeology Journal, 2002, 10(1): 18–39