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Alternatively enzymes can be immobilized onto many types of materials to overcome this problem.
Materials and Methods Materials.
Sayong Clay Material for Biocatalyst Immobilization, Materials Science Forum. vol. 737(2013), pp. 145-152
Adefila, Immobilization of Cassava Linamarase on Kankara Kaolinite Clay, Journal of Natural Sciences Research, vol. 2(2012), pp. 55-62
Azhar, Calcium Alginate: A Support Material for Immobilization of Proteases from Newly Isolated Strain of Bacillus subtilis KIBGE-HAS, World Applied Sciences Journal, vol. 7(2009), pp. 1281-1286

On the other hand, the dimension shrinkage, during this experiment, was so huge that most of the materials transformed into nearly nothing.
Chinese Journal of Dental Materials and Device, (2008), p. 177-122
ELECTRONIC COMPONENTS AND MATERIALS,(2012), p. 51-54
Journal of Materials Science: Materials in Electronics, (2006), p.877-882
Journal of Materials Science and Engineering, (2012), p. 89-92.

Materials and Methods Materials: The materials used in this study were Caesar weed bast harvested (see Figure 1a) from a wild source at the Ifesowapo quarters, Ado Ekiti, Nigeria, sawdusts of Afara – Terminalia superba, (Figure 1b) and Mahogany trees (Figure 1c) enough to fill 0.01 cubic meter containers.
Journal of Applied Polymer Science, Willey periodicals Inc. 93 (2004) 1021-1030 www.interscience.wiley.com
Vigie, Flexural properties of sawdust reinforced phenolic composites: Pilot study, Journal of Applied Polymer Science, .114 (2009) 1927-1934
Journal of Minerals and Materials Characterization and Engineering 9 (3) ( 2010) 199 – 210
The Arabian Journal for Science and Engineering 32, ( 2B) (2007)

These problems make it difficult to process composite materials.
Rzhevskaya, et al., Study of the geometric characteristics of carbon fiber fillers on the properties of polyphenylene sulfone, Materials Science Forum. 935 (2018) 5-10
Owens, An overview of recycling issues for composite materials, J.
Mrazova, Advanced composite materials of the future in aerospace industry.
Applied Polymer Science. 65 (1997) 901-907

Packing problem, which occurs frequently in sheet metal, clothing and furniture industry, cut product patterns from raw materials most efficiently and maximize material utilization.
Baltzer AG, Science Publishers, Basel, Switzerland, p.313–325 [3] V.
Jakobs: European Journal of Operational Research Vol. 88 (1996), p.169-171 [5] J.
Turton: European Journal of Operational Research Vol.128 (2001), p.34–57 [7] A.
Oliveira: European Journal of Operational Research Vol.141 (2002), p. 365-368 [8] E.

But for non uniform materials, such as trip steel, the microstructure changed greatly during deformation and microstructure development influence the macro behavior of the materials, micro materials behavior should be considered during the simulation[9-10].
As a kind of metallic materials, TRIP steel is dissipative materials, so internal variables were needed to describe the plastic behavior.
Materials Science & Engineering A, 2013, Vol.569: 137-143 [3].Yu Hai Yan, Gao Yun Kai, Meng De Jian, Transformation behavior of retained austenite under different deformation modes for low alloyed TRIP-assisted steels[J].
Materials Science and Engineering A, 2006, vol.441:331-335 [4].Akhtar S.
Computational aspects of the mechanics of complex materials[J].

Hence, the investigation on cost/performance materials of bipolar plates has become a critical research issue, therefore we need to design a material which was suitable for fuell cell.
Materials and Methods Materials.
The composition of materials is shown in Table 1 as follows: Table 1.
One of requirement for bipolar plate materials is electrical conductivity.
[6] Y.Wang, Thesis Master of Applied Science.

Materials and Methods 2.1-Preparation of Adsorbent.The rice husk (RH) used was obtained from Hilla silos, Babylon, Iraq.
X-ray diffraction analysis, which indicates that the RH mainly consist of amorphous materials.
Al – Husseiny Improving of Effluent Sewage by Treatment with Local Materials, MSc.
Singh, Removal of Cr (VI) from aqueous Solutions Using Pre-Consumer Processing Agricultural Waste: A Case Study of Rice Husk, Journal Hazard Materials, 162: 3125-320, 2009
Prapaimrungsi, Humic Acids Removal from Water by Aminopropyl Functionalized Rice Husk Ash, Journal of Hazardous Materials 184,775-781, 2010

The raw and auxiliary materials are mainly from domestic suppliers, and the usage ratio is shown in Table 2.
The use of phase-change materials in the production of phase-change gypsum plasterboard is the main stage causing eutrophication, which can be improved from the use of phase-change materials to enhance material utilization efficiency and to reduce waste
(4) The transportation process of various raw materials and energy also has a certain environmental impact on the life cycle of the two kinds of gypsum boards; therefore, transportation distance of various raw materials and energy can be optimized or reduced, and symbiotic park of raw materials can be built to reduce the load on the environment.
Journal of Cleaner Production. 174(2018) 771-779
[16] X Liu, H Wang, J Chen, etc, Establishment Approach and Base Model of Chinese Life Cycle Reference Database, Journal of Environmental Science. 30 (2010) 2136-2144

Prepartion and Properties of Zinc-doped Hydroxyapatite Whisker Duancheng Wang1, Tingting Yan1, Weibo Zhu1, Minghua Huang2,, Qinghua Chen1,* 1Faculty of Materials Science and Engineering, Kunming University of Science and Technology, 2Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology.
Kunming, 650093, China * Corresponding author, E-mail: chenqinghua_yn1@163.com, 625296056@qq.com Keywords: whisker, hydroxyapatite, bone repair materials, zinc-doped Abstract.
Hydroxyapatite is well used as bone repair materials.
Journal of Salt Lake Research, 2003,1l(4):57-66
Journal of Biomedical Materials Research, 2002, 59(2):312–317