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Chemical composition of the raw materials using X ray fluorescence (XRF).
XRD patterns of the materials tested by X ray diffraction (XRD).
When selecting raw materials for geopolymerization production, it is not only required materials containing the SiO2 and Al2O3 components but also a high activity for each oxide.
Provis and J.S.J. van Deventer, Alkali Activated Materials: State of the art report.
Li, Infrared Spectroscopy Study of Structural Nature of Geopolymeric Products, Journal of Wuhan University of Technology-Materials Science Edition, 23 (4) (2007) 522-527

Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China 2.
College of Materials and Engineering, Inner Mongolia University of Technology, Hohhot 010062, China 3.
The components of silica fume generally vary with raw materials, smelting techniques and recovering systems.
Liu: Journal of ACI Vol. 78(1981), p.341
Jing, S.R.Ren: TIANJIN Agricultural Sciences Vol.5(2001), p.15

This new form of materials with cement characteristics called geopolymer has been developed in recent years [4-5].
Geopolymer is addressed as a class of inorganic material obtained by reaction of an aluminosilicates source under strong alkaline conditions to increase the surface hydrolysis of the particle raw materials with a dissolution consisting of a certain amount of silica and alumina found in materials during polymerization by combined alkaline solution.
Materials and Method The present work intends to study the composites using epoxy resin enhanced with white clay based geopolymer.
References [1] P.D.Castrillo, D.olmos, H-J.Sue, Gonzalez-Benito: Composites Structures Vol 133 (2015), p.70-76 [2] Yusrina Mat Daud, Kamarudin Hussin, Che Mohd Ruzaidi, Azlin Fazlina Osman, Mustafa Al Bakri: Materials Science Forum Vol. 803 (2015), p. 58-62 [3] Mian Wang, Xioshan Fan, Warinton Thitsartan, Chaobin He : Polymer Vol 58 (2015),p 43-52 [4] U.
Australian Journal of Basic and Applied Sciences, 5 (7) (2011), p. 1199-120 [11] Yusrina Mat Daud, Kamarudin Hussin, Che Mohd Ruzaidi, Azlin Fazlina Osman, Mustafa Al Bakri: Applied Mechanics and Materials Vols 754-755 (2015), pp 220-224

The material properties of steel are test by the way stated in Chinese specification GB228-87 (Tensile Test Method of Metal).
Acknowledgments Thanks for the sponsoring of National Natural Science Foundation of China (Grant No. 50908118) and Natural Science Foundation of Ningbo City (Grant No. 2009A6101379, 2010A610079).
Journal of Tong Ji University (Natural Science), Vol.32:9(2004), p.1121-1125 (in Chinese) [2] Zheng, Y.Q., Yang, Y.F., and Han, L.H..
Journal of Constructional Steel Research, Vol. 64:3(2008), p. 312-325 [6] Zheng, Y.Q., and Han, L.H..
Fire Safety Journal, Vol. 42:1(2007), p. 1-10 [8] Jiang, D.H., Li, G.Q., Wang, S.W., and Zhang, B..

Journal of Aeronautical Materials.
Materials Science and Technology.
Journal of Materials Engineering and Performance.
Journal of Aeronautical Materials.
Metallurgical and Materials Transactions A.

Material and Method 2.1.
In many aspects like size, operating frequency, isolation achieved in using less complex structure, diversity parameters, Gain achieved using low-cost FR-4 material in entire range, the proposed antenna shows its superiority and usefulness in the application range.
Oztürk, Performance Analysis of OFDM and OFDM-MIMO Systems under Fading Channels, Engineering, Technology & Applied Science Research, vol. 8, no. 4, (2018), doi: 10.48084/etasr.2209
Ahmad et al., A Jug-Shaped CPW-Fed Ultra-Wideband Printed Monopole Antenna for Wireless Communications Networks, Applied Sciences, vol. 12, no. 2, p. 821, (2022), doi: 10.3390/app12020821
Patteeswaran, Defected Ground Structure Multiple Input-Output Antenna For Wireless Applications, Computer Systems Science and Engineering, vol. 46, no. 2, pp. 2109–2122, (2023), doi: 10.32604/csse.2023.036781

Mishra, Friction stir additive manufacturing for high structural performance through microstructural control in an Mg based WE43 alloy, Materials & Design 65 (2015), pp. 934–952
Zaeh, Automated surface inspection of friction stir welds by means of structured light projection, IOP Conference Series: Materials Science and Engineering 480 (2019), 012035
Zaeh, Influence of the welding temperature and the welding speed on the mechanical properties of friction stir welds in EN AW-2219-T87, IOP Conference Series: Materials Science and Engineering 373 (2018), 012016
Guillot, Effect of Tool Design and Process Parameters on Lap Joints Made by Right Angle Friction Stir Welding (RAFSW), Journal of Manufacturing and Materials Processing 3 (2019) 3, 66
Fuller, Friction Stir Tooling: Tool Materials and Designs, in: Friction stir welding and processing, ASM International, Materials Park, Ohio, USA, 2007, pp. 7–35.

In conditions of not changing the chair's surface elasticity, materials as well as surface shape, body pressure distribution can be changed by adjusting the height, the surface and backrest inclination to make a more comfortable chair.
The elastic supporting structure used in the chair designed by Shi, Zhenyu is a new type of glass fiber materials, being inconspicuous in memory than steel materials, so there is no fatigue basically.
Similarly, the cushion materials need to meet the ventilation and cooling performance, so it is commonly used polyurethane foam which easily emits water vapor from the surface quickly and has good ventilation property.
Journal of Central South University of Forestry & Technology, 2010(3)
Journal of Central South University of Forestry and Technology, 2010(5)

Wool/husks yarn was used as materials to knit fabrics.Through special steam treatment and sericin fixation finishing, the steaming conditions and the optimal technical parameters of sericin fixing were determined.
From what mentioned above, a kind of blended yarn of wool and cocoon out floss was used as materials to knit fabrics.
Table1 Specifications of sample fabric texture yarn material fabric density weight (g/m2) Thickness (mm) (wales/cm) (courses/10cm) single jersey Wool/husks(90/10) 5.4 8.0 Sample Pretreatment.
Acknowledge This work was financially supported by Zhejiang Education Department Science and Technology Plan Project (Y201122559).
Fu: Journal of Textile Research.

China Faculty of Science and technology management, Kunming University of Science & Technology,253 Xue Fu Road, Kunming,650093, P.R.
(4) Material information.
Such as all kinds of material name, material composition, attached materials (paint) composition, rare metals, the distribution of toxic materials, as well as replacement parts material, etc.
References [1] TZENG SF CHEN WH,PAIFY Evaluating the business value of RFID: evidence from five case studies[J].International Journal of Production Economics,(2008).112(2):601-613
Advanced Materials Research.