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Chinese Journal of Rock Mechanics and Engineering. 1990; 9(2):100-107 [5] ZHANG Ming, LI Zhongkui.
A CUSP CATASTROPHE MODELOF UNSTABLE FAILURE PROCESS OF QUASI-BRITTLE MATERIALS(in Chinese).
COAL SCIENCE AND TECHNOLOGY, 2002, 30(4): 12-15 [9] ZHAO Guoxu, XIE Heping, MA Weimin.
JOURNAL OF University of Science and Technology Beijing, 2011, 33(4):400-405 [13] SUI Bin, ZHU Weishen , LI Shu-chen.
Chinese Journal of Rock Mechanics and Engineering, 2009, 30(8): 2501 - 2505

It’s oxidation by oxygen from the air on the materials, modified by MnO2, including NZ, is generally used.
-S., Tang X.: Comparative sorption kinetic studies of ammonium onto zeolite // Journal of Hazardous Materials. 2006.
[30] Vassileva P., Voikova D.: Investigation on natural and pretreated Bulgarian clinoptilolite for ammonium ions from aqueous solutions // Journal of Hazardous Materials. 2009.
[31] Siljeg M., Foglar L., Kukucka M.: The ground  water ammonium sorption onto Croatian and Serbian clinoptilolite solutions // Journal of Hazardous Materials. 2010.
[32] Jha V.K., Hayashi S.: Modification on natural clinoptilolite zeolite for its NH4+ retention capacity // Journal of Hazardous Materials. 2009.

Conductivity tensor is an important concept in materials, this work studies conductivity tensors in cylindrical quantum wires with parabolic potential in the presence of two external fields, a linearly polarized electromagnetic wave, and a laser field.
Conclusions Conductivity tensor is an important concept in the study of materials, including low dimensional materials.
Vương, The photon – drag effect in retangular quantum wire with an infinite potential, VNU Journal of Science, Mathematics – Physics. 33 (2017) 53-59
Vuong, The photon – drag effect in cylindrical quantum wire with an infinite potential for the case of electrons – acoustic phonon scattering, VNU Journal of Science, Mathematics – Physics. 33 (2017) 80-86
Uyen, Electric conductivity tensor of semiconductors in a variable magnetic field, VNU journal of science. 1 (1995) 19-23

Introduction Grinding is an indispensable process in production of various mechanical parts, which are made from hard and difficult-to-machine materials or which has a complex surface shape.
Savkovic, Surface layer properties of the workpiece material in high performance grinding, Metalurgija, Vol. 51/1/2012, pp. 105-108
Lavine, A simple model for convective cooling during the grinding process, ASME Journal of Engineering for Industry, Vol. 110/1988, pp. 1-6
Skoric, Influence of discharge energy on machining characteristics in EDM, Journal of Mechanical Science and Technology, Vol. 26/1/2012, pp.173-179
Gostimirovic, Multi-output fuzzy inference system for modeling cutting temperature and tool life in face milling, Journal of Mechanical Science and Technology, Vol. 28/10/2014, pp. 4247-4256

SAE Transactions: Journal of Materials \& Manufacturing, 2001. 110: p. 334--352
International Journal of Refractory Metals and Hard Materials, 2008. 26(3): p. 197-206
Journal of materials processing technology, 2006. 179(1): p. 165-171
International Journal of Refractory Metals and Hard Materials, 2008. 26(3): p. 197-206
International Journal of Refractory Metals & Hard Materials 2000. 18(6): p. 287-296

Drilling is the most often employed operation for fiber-reinforced polymer materials owing to the need for structure joining.
In fact, the chisel edge of the drill pushes the material down along with removed materials flowed back as it advances in the material.
Experimental details Materials and Preparation method.
TARVERDI, Preparation and properties of polypropylene composites reinforced with wheat and flax straw fibres Journal of materials science, 32, 1997, 443-449
Tsao, Comprehensive analysis of delamination in drilling of composite materials with various drill bits, Journal of Materials Processing Technology 140 (2003) 335–339

Acoustic Emission as Analyzing Tool for Wear Mechanisms of Composite Materials Jan Quintelier1, a, Joris Degrieck1,b, Pieter Samyn 1,c Wim De Waele 1,d, Georgios Kalogiannakis2,e and Danny Van Hemelrijck2,f 1 Laboratory Soete, Ghent university, St.
Materials and method The material used is a low profile, flame retardant polyester grade, reinforced with glass fibers.
In conclusion, AE appears to be a very powerful technique for condition monitoring of composite materials under any loading conditions.
Aikawa, Data fusion of distributed AE sensors for the detection of friction sources during press forming, Journal of Materials Processing Technology 139 (2003) 368-372
Van Hemelrijck, Damage characterization of pultruded glass/polyester conducting wavelet and cluster analysis of AE data, Composite Science and Technology [8] J.

References [] YAN Jing, YANG He, ZHAN Mei, REN Ning, KOU Yong-le.A new method to determine plastic constitutive parameters of tube and its applications.Materials science & technology. 2009,17(3):297-300 [2] Jingyao Liu.
Trasactions of the ASME Journal of Engineering Materials and Technology, 1992. 114, 116-123 [4] Da-xin E, Hua-hui He, Xiao-yi Liu and Ru-xinNing.
Journal of Materials Processing Technology, 2005, 168(2):327-335 [6] Heraldo S, Costa Mattos, Fulvio E.
Journal of Materials Processing Technology, 2011,211(3): 402-414
Chinese journal of science instrument.2006,27(12):1605-1608 [12] ZengYihui,ZuoQingsong,LiYide,et al.

Sustainable Energy Materials, C.
Electronic Materials, E.
Transportation Materials, H.
After peer reviewing processes, 559 papers were selected to be published in 9 Journals or proceedings,including J. of Materials Research (JMR), Rare metal Materials and Engineering, J. of Univ.
Science and Technology Beijing, Biomedical Materials: Materials for Tissue Engineering and Regenerative Medicine, Chinese Journal of Aeronautics, Materials Science Forum, and Journal of Physics: conference series.

Determination of Flow Curve by Cylindrical Upsetting Based on the Principle of Virtual Power Viktor Szombathelyi1,2,a,*, György Krállics2,b, Péter Rózsahegyi3,c 1 College of Dunaújváros, Department of Material Science, H-2400, Táncsics M. str. 1/A, Dunaújváros, Hungary 2 Budapest University of Technology and Economics, Department of Material Science and Engineering, H-1111, Bertalan L. str. 7, Budapest, Hungary 3 Bay Zoltán Nonprofit Ltd. for Applied Research, H-1116, Fehérvári út 130, Budapest, Hungary a szombathelyi@mail.duf.hu b krallics@eik.bme.hu crozsahegyi.peter@bay-logi.hu Keywords: flow curve, cylindrical upsetting, barrelling, principle of virtual work.
The most commonly used tests to determine the flow curve of materials include upsetting of cylindrical or prismatic specimens, tension or torsion tests.
The material is assumed to isotropic and incompressible and the inertia forces are suppressed [5]
Hardt, D.E.: A Method for in-Process Failure Prediction in Cold Upset Forging, Journal of Engineering for Industry, 105 (1983) 161-167 [3] Ebrahimi R., Najafizadeh A.: A New Method for Evalution for Friction in Bulk Metal Forming, Journal of Materials Processing Technology, 152 (2004) 136-143 [4] György Krállics, András Reé, Kristóf Bobor, Viktor Szombathelyi: Limitations in Measuring the Flow Stress, Materials Science Forum, Vol. 752 (2013) 85-94 [5] Kolmogorov, V.L., 1999.
International Journal of Solids and Structures 36, 1253-1262