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A measurement method for loss factor of viscoelastic material was researched.
Introduction Transverse wave and longitudinal wave is a kind of elastic acoustic wave in viscoelastic material and elastic material.
Elastic acoustic wave can be excited when acoustic wave incidents to the surface of viscoelastic material or elastic material at a certain angle [1-3].
Acknowledgements This work is supported by science and technology on underwater acoustic laboratory under grant 9140C200105120C2001.
References [1] Yexin Xing, Guowei Luo: International Journal of Digital Content Technology and its Applications.

Metallic implants are usually made of one of the three types of materials: austenitic stainless steels, cobalt–chromium alloys and titanium and its alloys [15].
MATERIAL AND METHODS Material.
Machining parameters such as depth of cut, cutting speed and cutting tools influenced surface characteristics of materials.
The other parameter such as feeding angle, thread per inch and cutting tools materials also give influence for surface characteristics material of cortical bone screw.
Lett. 11: (1992) 1039–1042 [16] Uthoff, H.K., Poitras, P. dan Backman, D.S, "Internal plate fixation of fractures: short history and recent developments”, Journal of Orthopaedic Science, vol 11 (2006) 118-126

The cathode materials were characterized by X-ray powder diffraction(XRD), scanning electron microscopy(SEM).
However, it has been reported that there are still several major problems limiting the applications of the lithium-rich layered cathode materials.
To synthesize cathode material Li[Li0.2Mn0.54Ni0.13Co0.13]O2, MnSO4·H2O, NiSO4·6H2O and CoSO4·7H2O are used as starting materials for the coprecipitation.
Fig. 2 shows the SEM images of the T1 and T2 cathode materials.
Acknowledgements This work was funded by the National Natural Science Foundation of China(51202083).

In this paper, ceramic balls, made of natural mineral materials, are chosen as activating material.
Materials and Methods 2.1 Materials and reagents Kunming mice were bought from Animal Science of Health Science Laboratory in Peking University.
Results and Discussion 3.1 Changes of parameters of water After flowing through the activating materials, the properties of water are changed by them.
Wang, et al.: Journal of Functional Materials, Vol. 40(2009), p. 556 [8] J.S.
Ding, et al.: Advanced Materials Research, Vol. 178 (2011), p. 86 [11] D.Y.

De Vries: Moisture movement in porous materials under temperature gradients.
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Chemical Engineering Science, vol 54 (1999), p. 3899-3908
Zhang: Mechanism and mathematical model of heat and mass transfer during convective drying of porous materials.
Chemical Engineering Science, 55 (2000), p. 3585-3598

The particles size and morphology can affect the tap density of materials, and the sphere shape particles can make materials with higher tap density.
The materials were held for 24h at the upper temperature and slowly cooled down to room temperature prior to removal from the furnace.
Jullen: Chemistry of Materials Vol.20(2008),p.462
Hwang: Journal of Materials Chemistry Vol.14(2004),p. 2690
Nuli: Advanced Functional Materials Vol.16(2006),p.2135

Beik Mohammadloo: Computational Materials Science, Vol. 49, Issue 2 (2010), p. 192
Beik Mohammadloo: Computational Materials Science, Vol. 49, Issue 2 (2010), p. 201
Zhang: Journal of Materials Processing Technology, Vol. 89-90 (1999), p. 273
Obikawa: International Journal of Mechanical Sciences, Volume 47, Issue 9 (2005), p. 1377
Zacharia: Materials Science and Engineering A, Vol. 246, Issues 1-2 (1998), p. 45

Metametarials may provide special and unique properties of materials.
Journal of Mechanical Science and Technology, 21 (2007) 946-949
International Journal of Mechanical Sciences, 82 (2014) 32-40
Journal of Mechanical Science and Technology, 26(12) (2012) 3873-3884
Haberman, Mechanical design of negative stiffness honeycomb materials, Integrating Materials and Manufacturing Innovation, 2015

Using the material blending menu, the system accepts the liquid density which input by user and calculates the weight of each material automatically.
Initial Foundation of Henan University of Science & Technology for financial support of this research work.
Lu: Journal of Process Control, Vol. 17 (2007) No.5, p.191-201
Ma: Journal of System Simulation, Vol. 11 (2007) No.9, p.2594-2598.
Su: Journal of Process Automation Instrumentation, Vol. 27 (2006) No.3, p.56-59.

Borysova, Studying the physicalchemical properties of alloyed metallurgical waste as secondary resourcesaving raw materials, Eastern-European Journal of Enterprise Technologies. 4 12 (2018) 43–48
Bai, Preparation of ferronickel from nickel laterite via coal-based reduction followed by magnetic separation, International Journal of Minerals, Metallurgy and Materials. 25 7 (2018) 744–751
A study on mechanochemical behavior of MoO3–Mg–C to synthesize molybdenum carbide, International Journal of Refractory Metals and Hard Materials. 47 11 (2014) 18–24
IOP Conference Series Materials Science and Engineering. 91 (2015) 1–6
Kharatyan, DTA/TG study of tungsten oxide and ammonium tungstate reduction by (Mg + C) combined reducers at non-isothermal conditions, International Journal Refractory Metals & Hard Materials. 43 (2014) 216–221