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Jl Raya Bandung-Sumedang 2Department of Physics, Faculty of Mathematics and Natural Science, Universitas Padjadjaran.
The main constraints in the use of vegetable materials include Lemna sp. as fish feed material is the high content of crude fiber and moisture, the presence of anti-nutritional substances and different amino acid compositions from animal protein materials.
Fermentation can improve some properties of raw materials such as increasing digestibility, nutritional content, flavors and aromas that are favored by livestock, including fish [5].
The row material of Lemna sp. was collected from the Ciparanje Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran.
Nagodhawithana, Technology of yeast usage in winemaking, American Journal Enology Viticology 39 (1988) 83-85

Therefore, this study applied GTN model that is widely used in ductile metal materials to matrix model.
Yanagimoto, Internal Journal of Material Forming, 9-2 (2016) 243-252
Yanagimoto, Internal Journal of Material Forming, 9-5 (2016) 697-703
Curtis, Composites Science and Technology, 70 (2010) 1214-1222
Pons, Composites Science and Technology, 144 (2017) 26-35

(5) Work piece materials are homogeneous and isotropic in nature.
Journal of Materials Processing Technology 149 (2004) 304–309 [3] P.E.
The variable mass, cylindrical plasma model, Journal of Applied Physics 73 (11) (1993) 7900–7909
Dixit, Thermal stresses due to electrical discharge machining, International Journal of Machine Tools and Manufacturing 42 (2002) 877–888
Ghoshdastidar, Numerical simulation of thermal erosion in EDM process, IE (I) Journal-PR 77 (1996) 13–19.

Numerical Simulation Method Process Parameters and Material Characteristics.
Guo: A study on the investment casting of 17-4PH stainless steel helical impeller of centrifugal pump, Materials Research Innovations, Vol. 19, Issue S9 (2015), pp. 77-81
Lin: Optimal pouring system design for investment casting of cladding thin-plate heater using metallic mold flow analyses, Applied Mechanics and Materials, Vol. 627 (2014), pp. 46-49
Guo et al.: Microporosity prediction and validation for Ni-based superalloy castings, IOP Conference Series: Materials Science and Engineering, Vol. 84 (2003), 012003 pp 1-6
Shieh, Numerical simulations of low pressure die-casting for A356 aluminum rim, Materials Science Forum, Vol. 893 (2017), pp. 276-280

Introduction Guided by the requirements of “energy-saving, material-economizing and pollution free” for green materials, people are seeking for new type anode which has long service life, high performance of electrocatalysis and free of secondary pollution[1,2].
It also studies the performance of modified Ti-based lead dioxide electrode with MB solution as process object. 1 Experimental 1.1 Experimental chemicals The chemicals and materials needed for the experiment are listed in Table 1.
Environmental Science and Technology. 2007, 30(9): 28-38
Chinese Journal of Environmental Engineering. 2008, 2(7): 959-963
Chinese Journal of Catalysis. 2007, 28(7):646-650

Materials and Methods 2.1.
Journal of Dairy Science, 1987. 70(3): p. 506-513
Journal of hazardous materials, 2009. 166(2): p. 1339-1343
Emergent Materials, 2021: p. 1-9
Journal of hazardous materials, 2014. 264: p. 269-277

Introduction The term "Micro Material'' refers to materials with an average grain size of 0.5 to 400µm.
Numerous minute adjustments to the process of creating auto particles cause materials molecular structure to alter.
Suthar, “Spray drying technology: an overview” Indian Journal of Science and Technology, vol. 2, no.10 (Oct 2009) ISSN: 0974- 6846
I: Hardware and Process Parameters”, Journal of Pharmaceutical Sciences, vol. 99, no. 2, pp. 575-586, 2010
Nassenstein, “Thermal Spraying” Materials Science Forum, vol. 163-165, pp. 559-572, 1994

Materials and Methods Scaffold preparation.
Mortazavi, Preparation and bioactivity evaluation of bone-like hydroxyapatite nanopowder, Journal of Materials Processing Technology 202 (2008) 536-542
Misra, Chitosan as scaffold matrix for tissue engineering, Materials Science Technology 24 (2008) 1062-1075
Materials Science and Enginnering C 29 (2009) 62-68
Xu, Silk fibroin/chitosan scaffolds: preparation, characterization and culture with HepG2 cell, Journal of Materials Science: Materials in Medicine 19 (2008) 3545-3553.

Materials and Methods Extraction of Fibers (Ampelodesma Mauritanica plant).
Today, it is receiving increasing attention as it is a renewable raw material used in the development of new materials [13, 20].
Bendaikha, Studies on the properties of cellulose fibers reinforced thermoplastic starch composites, Journal of Chemistry and materials research, 3 (2015) 21-25
El-Kashif, Reinforcement of starch based biodegradable composite using Nile rose residues, Journal of Materials Research and Technology, 9 (2020) 6160-6171
Migliaresi, Green composites of thermoplastic corn starch and recycled paper cellulose fibers, Songklanakarin Journal of Science & Technology, 33 (2011)

Materials and Technology External Insulation Materials Shanghai Case.
The nanophase materials were used in it’s outer wall materials, which can guarantee the automatically cleaning effectiveness during rainy days; meanwhile block 98% of photothermal radiation into the building can be blocked.
Recycled Architectural Materials Shanghai Case.
[5] Chanjiao Guo, Jian Liu: Henan Building Materials Vol.1(2008) :p24-25,in Chinese
[6] Xue Ming: Journal of Chongqin Architectural University Vol.26(2004) :p 61-66,in Chinese