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Many effective adsorption materials were researched and developed.
So finding cheaper and readily available materials for the removal of unwanted ions from water is the most important task for researchers during using adsorption method.
Journal of Hazardous Materials.142 (2007) 199-207
Journal of Hazardous Materials.156 (2008) 23-35
Journal of Colloid and Interface Science. 218 (1999) 511-521

Journal of Henan Polytechnic University (Natural Science), 2012，31（5）：518-524 (In Chinese) [5] Qi Wang, Shucai Li, Hanpeng Wang et al.
Journal of Shandong University (Engineering Science), 2011,41（5）：103-107 (In Chinese) [6] Xiaoqing Wang.
Journal of Safety Science and Technology, 2011,7（3）：54-57 (In Chinese) [7] Chunming Zhang, Xianwei Li.
Journal of Xi’an University of Science and Technology, 2012,32（3）：348-352 (In Chinese) [9] Yanfa Gao, Bo Wang, Jun Wang et al.
Journal of China Coal Society, 2013,38（7）：1154-1160 (In Chinese)

Hawa, Effect of Heat Treatment on Ca Substitution in a Porous Y(Ba1-xCax)2Cu3O7-δ Superconductor, Advanced Materials Research 895 (2014) 71-74
Terzioglu, Investigation of the Structural, Magnetic and Electrical Properties of the Au Doped YBCO Superconductors,  Journal of Materials Science: Materials in Electronics 30(3) (2019) 2265-2277
Chen, Charge Distribution in YBa2Cu3O7 and YBa2Cu4O8 by Density Functional Theory, Materials Science Forum 846 (2016) 561-566
Payne, First Principles Methods using CASTEP, Zeitschrift für Kristallographie-Crystalline Materials 220 (2005) 567-570
Akhavan, Electronic Properties of YBa2Cu3O7 using Pseudopotential-Density Functional Approach with LDA and GGC, Magnetic and Superconducting Materials 1 (2000) 251-258

Porous metal-organic frameworks (MOFs) offers non-toxic, biodegradable porous materials that could be loaded with significant amount of materials (i.e drug, gas or even fertilizer) and release it in a controlled manner [6],[7],[8].
FESEM imaging confirmed that both of the materials have crystalline morphology of the material, with tetragonal growth pattern.
The resulting products were confirmed to be crystalline materials as shown by the sharp peaks from the PXRD pattern in Figure 1e.
Summary The hydrothermal treatment of ferric chloride, orthophosphoric acid, oxalic acid dihydrate, urea was able to yield crystalline materials as shown by PXRD.
Journal of Materials Science 51.20 (2016): 9239-9252

Experimental Materials and methods.
Acknowledgements The authors thank the Jiangsu Key Laboratory for Environment Functional Materials (SJHG1306) and the environmental science and technology projects of Suzhou (2015-13) for financial support.
ACS applied materials & interfaces, 2013, 6(1): 200-9
Nature materials, 2007, 6(3): 183-91
Journal of applied polymer science, 2013, 127(5): 3699-704

Considering ancient monuments and historical buildings, it seems that these mortars have proved to be durable and reliable materials.
This work is included in a study intending to determine key factors to the durability of these ancient materials in presence of water.
Its kinetics of formation and development are influenced by environment but also by raw materials, strengthening the ancient masonry [9-12].
Dias, Chemical and mineralogical characterization of historic mortars from the Santa Eulalia de Bóveda temple, NW Spain, Journal of Archaeological Science,V 37 (2010) 2346-2351
Papayianni, Methods for the characterization of historic mortars- Part 2: Chemical characterization, Materials and Structures, 38,(2005), 771-780

The Analysis of the Stress and Strain in Skew Rolling Haibo Yanga ，Lijie Zhang and Zhenghuan Hu School of Mechanical Engineering University of Science and Technology Beijing, Beijing, China ayhb@ustb.edu.cn Keywords：Metal forming, Skew Rolling, Low Cycle Fatigue.
In this paper, three-dimensional finite-element model for the skew rolling (helical-groove rolling) process has been used to characterize the workpiece material stress,strain and deformation behavior.
In this work, the 3D finite element model developed by the authors [5] will be used to investigate the stress and deformation of the workpiece material.
In the numerical analyses, the tooling materials were defined to be hardened-steel with the following properties: modulus of elasticity E=210 GPa, Poisson ratioν=0.3, and densityρ=7820 kg/m3.
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science , 215 ( 2001) 523-532 [5] Haibo.Yang.

Therefore, a simple and economical method for making high quality materials is desirable.
Stoichiometric mixtures of raw materials were mixed uniformly by milling in an agate mortar.
Su: The Optical and luminescent materials [M].
Beijing: Chemical Industry Press, Materials Science and Development Center (in Chin.), 2004: 321
Hu: Solid Luminous Materials [M] (Beijing: Chemical Industry Press, Environmental Science and publishing Center (in Chin.) 2003), p. 466

This substitution causes a negligible error [6] and is a common practice for XRD in surface hardened materials.
Grum: International Journal of Materials and Product Technology Vol. 29 (2007), p.9-42 [3] J.
Prevéy, in: Developments in Materials Characterization Technologies, edited by G.
Friel, ASM International, Materials Park, OH, (1996), p.103-110
Prime: Journal of Engineering Materials and Technology Vol. 123 (2001), p.162-168 [8] M.B Prime, R.J.

Effect of sintering temperature on microstructure and electrical properties of (Mn, Nb)-doped BZT-BCT ceramics Cheng Zhang1, a, Qibin Liu2, b and Xiaoqin Huang3, c 1College of materials and metallurgy, Guizhou University, Guiyang, China 2College of materials and metallurgy, Guizhou University, Guiyang, China; School of Chemistry and Materials of Kaili College, Kaili , China 3College of materials and metallurgy, Guizhou University, Guiyang, China azipperzinc@163.com, bqbliu2@263.net, chuangxiaoqin0704@126.com Keywords: lead-free piezoelectric ceramic; dielectric property; Nb2O5-doped; sintering temperature Abstract.
Therefore, the development of lead-free piezoelectric materials is an urgent and significant subject.
References [1] Tanaka Tetsurō: Piezoceramic Materials.
Science Press, Beijing 1982
Journal of Sichuan University (Nature Science Edition): 2005, 42(2): 498-450 [3] P.