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Experimental Materials:Toluene (A.
The new material for toluene in indoor air purification has a good theoretical and practical value.
Corresponding Author Name:Hua Zhang Email:hua1210@126.com Mobile phone: 13920224960 References [1] Xuewei Zhang;Science & Technology Vision;2012,6:153-154.
[5] Yangsheng Liu,Sha Yi;Journal of Basic Science and Engineering;2005,13:276-283.
(in Chinese) [6] Chen Chen,Hua Zhang,Xingxiang Zhang,Xuechen Wang;Journal of the Textile Institute; 2010,101(2):28-134

Kandil, An experimental study of hydroforming deep drawing, Journal of materials processing Technology, 134 (2003) 70-80
Danckert, Development of hydro-mechanical deep drawing, Journal of Materials Processing Technology, 83 (1998) 14-25
Zhang, Developments in hydroforming, Journal of Materials Processing Technology, 91 (1999) 236-244
Zhou, Recent developments in sheet hydroforming technology, Journal of Materials Processing Technology, 151 (2004) 237-241
Rieger, Recent developments in hydroforming technology, Journal of Materials Processing Technology, 98 (2000) 251-258

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

Journal of the Mechanical Behavior of Medical Materials 9 (2012) 34 – 44
Progress in Materials Science 58 (2013) 261–326
Journal of Biomedical Materials Research.
Materials Science & Engineering A 587 (2013) 123–131
Materials Science and Engineering C 33 (2013) 59–63

Besides some harmful materials, there are lots of valuable materials in second-hand computers, most of them could be recycled and reused.
Fig.1 gives the proportion of main materials in second-hand computer.
Present state on the utilization of electronic waste materials and its development [J].
Journal of Tongji University (Social Science Section), 2002, 13 (1): 96-101 [13] WANG Geng.
Journal of social science of Jiamusi University, 2002, 20 (3): 41-42

Electrode design and electrode materials have an important role to influence MRR and surface roughness with varying of process parameters [8].
Materials and Methods The experiment was conducted on Mitsubishi Die-sinker EDM (EA8) to machine mild steel material.
Singh, "Review of research work in sinking EDM and WEDM on metal matrix composite materials," The International Journal of Advanced Manufacturing Technology, 50 (2010) 611-624
Lee, "Effects of flushing on electro-discharge machined surfaces," Journal of materials processing technology, 48 (1995) 299-305
Rao, "An overview of technology and research in electrode design and manufacturing in sinking electrical discharge machining," Journal of Engineering Science and Technology Review, 4 (2011) 118-130

Keywords: fire safety; high-rise buildings; unique buildings; bearing structures; fire-resistance; fireproofing plaster; fire protection means; anti-terrorism measures; fireproof coverings; vermiculite; innovative fireproofing materials; materials for facing.
Fibrous materials and, in places with high loads, vermiculite-cement mixture were used there.
The main indicator of plastering materials is the "bond strength», or cohesion.
Dalton [electronic resource], Sprayed Fire-resistive Materials, Bond Strength, and the IBC.
Gerasimenko, Innovative science . 12-2 (2015) 50-52

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

Introduction With the development of technology, the engineering materials are widely applied to the mechanical science, chemical technology and aviation technology.
The traditional metal materials have already been more incompetent for the demand of the engineering application.The advanced ceramics have many good properties that the metals don’t have, So the advanced ceramics have broad applications in modern engineering materials.
The application of engineering ceramic materials depends largely on the technology development of processing the ceramic parts.
Journal of Materials Processing Technology, 2004 (149):347-352
[4] Erden A.Journal of Engineering Materials and Technology, 1983,105(4):132-138

There has been a recent surge in interest in researching and developing new materials for contact lenses (CLs).
With the advancement of associated biomaterials, such as drug delivery, these materials will continue to grow in importance in the future.
Fang, “Contact lens materials: A materials science perspective,” Materials, vol. 12, no. 2. 2019. doi: 10.3390/ma12020261
Muhammed, “Bulk synthesis of transparent and homogeneous polymeric hybrid materials with ZnO quantum dots and PMMA,” Advanced Materials, vol. 19, no. 24. pp. 4347–4352, 2007. doi: 10.1002/adma.200700736
Hoque, “Aloe vera gel as a Novel Edible Coating for Fresh Fruits: A Review,” American Journal of Food Science and Technology, vol. 2, no. 3. pp. 93–97, 2014. doi: 10.12691/ajfst-2-3-3