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Acknowledgements This work was financially supported by the Natural Science Foundation of P.R.China through contract no.50875137 and Natural Science Foundation of Shandong Province Government P.R.China through contract no.Y2007F30.
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However, friction, material non-uniformities and manufacturing and assembly errors in actual systems have very important effects on experiment results.
[2] Kris K, Imme E,William, Locally linearized dynamic analysis of parallel manipulators and application of input shaping to reduce vibrations, Journal of Mechanical Design, 126(1) (2004) 156-168
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[4] Changhe Li, Yali Hou Chao Du and Yucheng Ding, An Analysis of the Electric Spindle’s Dynamic Characteristics of High Speed Grinder, Journal of Advanced Manufacturing Systems, 10(1) (2011) 159-166
Wanshan, Study on Simulation and Experiment of Dynamic Characteristics of the Linear Rolling Guide in Turn-Milling Centre, Journal of Advanced Science Letter, 4 (2011) 1913–1917.

Introduction Coal is an important support for my country's economic development and the country's basic energy and chemical raw material.
Acknowledgement This work was supported by funds from the Special project of scientific and technological innovation and entrepreneurship of CCTEG Tiandi Science & Technology Co.
[2] JING Guoxun, MU Lulu.Study on statistical analysis and emergency management of coal mine gas explosion accident[J].Journal of Safety and Environment, 2023, 23(10): 3657-3665
[3] ZHAO Xiang, SUN Linhua, PENG Weihua.Chemical Characteristics and Source Analysis of Groundwater in Coal Mining Area Based on Mathematical Statistics[J].Open Journal of Natural Science, 2021, 9(4):405-413
Analysis and Preventive Measures of Gas Overrun Accident in Tunnel Construction[J].Journal of Shenyang Ligong University, 2022,41(03):90-94

With the increasing use of complex multiphase scaffold materials composed of many separate polymeric and ceramic constituents, there exists a need for the simultaneous simulation of the hydrolysis degradation of multiple polymeric phase materials, where each phase may display different degradation behavior.
Berger et al.: Materials Science and Engineering A, Vol. 412 (2005), p. 53 [5] S.
Hori: Micromechanics: Overall properties of heterogeneous materials, Elsevier, North Holland (1999)
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Wang et al.: Journal of the Mechanical Behavior of Biomedical Materials, In Press, 2009

The relation between ratio of material (rice husk powder to cationic etherification agent powder) and the turbidity removal is shown in Table 1.
Material ratio has an important influence upon the reaction.
Table 1 The relation between material ratio (rice husk powder to cationic etherification agent) and turbidity removal Material reatio 2:1 1:1 2:3 1:2 Turbidity removal(%) 78.6 89.3 92.1 92.0 Conclusions In this paper, a natural polymer cationic flocculant was prepared by modifying rice husk with OTAC and its removal of turbidity was tested by diatomite flocculent experiment.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (20901012), Science & Technology Foundation of Liaoning of China(201102111).
Mishra: Asian Textile Journal.

One area of interest has been to use the fibers for reinforcement in cement based materials.
Material Materials of high strength to weight ratio can be produced by incorporating fibers in a ductile matrix.
Richard Hindorf after procuring the planting materials from Florida (USA).
References [1] Kanchidurai S, Nanthin T and Jai S.P., “Experimental Studies on Sisal Fibres Reinforced Concrete with Groundnut Shell Ash”, ARPN Journal of Engineering and Applied Sciences , Vol 12, No 21, November 2017
[11] Swamy, R.N. et al (1973), “The mechanics of fiber reinforced cement Materials”.

The stress at the tip of a sharp crack has the highest stress which can lead to failure on the material.
We consider the human femur bone as an isotropic linear elastic material so that we can calculate the amount of the stress intensity factor () at the crack tip using stress singularity calculations.
If there are two different materials found in the singularity problem, we do not only consider the elastic constant and local geometry of the material, but we also have to account for the deformation mode [4].
Kruzica., "R-curve behavior and micromechanisms of fracture in resin based dental restorative composites," Journal of the mechanical behavior of biomedical materials vol. 2, pp. 502-511, 2009
Serier, "Numerical analysis of the crack growth path in the cement mantle of the reconstructed acetabulum," Materials Science and Engineering, vol. 33, pp. 543-549, 2013

Dutra5,e 1,2,3,4,5Federal University of Paraíba / Technology Center / Department of Materials Engineering - University City, S / N - CEP 58051-900 - João Pessoa - Paraíba, Brazil – Phone: (83) 3216-7076.
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Clay Science, v. 42 (2008) p. 8-24
Clay Science vol. 39 (2008) p. 19–27
Journal of Petroleum Science and Engineering vol.45 (2004) p. 123– 128

Cesnik, “Nonlinear aeroelastic analysis of aircraft with high-aspect-ratio wings [C],” in Proceedings of the 39th Structures, Structural Dynamics, and Materials Conference, 1998, pp. 20–23
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Hodges, “Flight Dynamics of Highly Flexible Flying Wings [J].,” Journal of Aircraft, vol. 43, no. 6, pp. 1790–1799, 2006
Garcia, “Numerical Investigation of Nonlinear Aeroelastic Effects on Flexible High-Aspect-Ratio Wings [J],” Journal of Aircraft, vol. 42, no. 4, pp. 1025–1036, Jul. 2005
Journal of Mechanical Science and Technology, 26(12), 3921–3931. doi:10.1007/s12206-012-0889-2 [10] J.

Materials and Methods Approximately 200 g of fresh mammary tissue was obtained from a Chinese Holstein dairy cow in mid-lactation (4-6 months post-partum) within 30 min after slaughtered and transported to the lab in 500 ml Hank’s balanced salt solution (HBSS) containing Ca2+, Mg2+, penicillin G (100 μg/ml),streptomycin (100 μg/ml), gentamicin (100 μg/ml), and Fungizone (5 μg/ml; BioWhittaker) at 20 °C.
References [1] S.M.Boue ,et al.Effect of biotic elicitors on enrichment of antioxidant properties and induced isoflavones in soybean.Journal of Food Science, vol.73,pp.43-49.2008
Poultry Science, 2007, vol.86,pp.1356-1362, [4] R.Michael,et al.Reproductive safety studies with genistein in rats .Food and Chemical Toxicology,2007, vol.45,pp.1319-1332
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