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In recent years, researchers have conducted extensive and detailed studies using various adsorption materials, such as raw shell materials, coconut shell fiber, almond hulls, modified banana stem fiber, and wood fiber, to handle cobalt-containing wastewater [9,10,11,12].
Materials and methods Experimental materials The reagents used in the experiments, CoCl2·6H2O, NaOH, and HCl, were of analytical grade and were obtained from the Shanghai Chemical Reagent Company.
Acknowledgements This work was financially supported by National National Natural Science Foundation of China (51208200) and Shanghai Postdoctoral Science Foundation (12R21412200).
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Brown, Sridhar Komarneni: Journal of Materials research.1998,11(1):3-7

Materials and Method Materials.
This reveals the possibility of the presence of other inorganic materials in the extracted Na-ALG due to its precursor sample, which can positively or negatively contribute to heavy metal (Cu) adsorption.
Goli: Journal of Food Science and Technology, SpringerLink, (2015) [11] R.
Widjanarko: Journal of Food Science and Technology, 56(8), 3687–3696, (2019) [15] X.
Hung Hu: Journal of Materials Chemistry A, (2022) [18] C.E.R.

Also there are some shortcomings including high price of raw materials, cumbersome process, complex operation and huge investment.
Wuhan University of Science and Technology made a progress on the production of high-purity MgO using BAMENG magnesite ore as raw material.
Pommier, Syntheses of submicron magnesium oxide powders, Materials Chemistry and Physics.
Tanigaki, et al, Preparation of nanoporous MgO using gel as structure-direct template, Materials Letters.
Skandan, et al, Fabrication of translucent MgO ceramics using nanopowders, Materials Letters.

Materials and methods Preparation and characterization of MBG scaffolds.
Journal of biomedical materials research, 2001, 54(1): 139-148
Journal of Biomedical Materials Research Part A, 2007, 80(2): 428-434
Chemistry of materials, 2006, 18(13): 3137-3144
Journal of biomedical materials research, 1990, 24(6): 721-734

Acknowledgement Thank for the support of National Key Basic Research Program of China (973 Program)(NO. 2011CB201200), The National Natural Science Foundation of China(No. 50974125)and The National Natural Science Foundation of China(No. 50909093) Reference [1] A.Hanyga,Fractional-order relaxation laws in non-linear viscoelasticity,Continuum mech,Thermodyn.19(2007) 25-36
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The advantage of this solution is the ability to apply it to a wide spectrum of materials – from elastoplasts to brittle ones where the conventional techniques cannot be used.
This effect is useful in diagnostics during laser processing of materials, particularly in identification of the type of biotissue in the course of its destruction [7, 9].
This property was used as a principle of operation of the Self-excited Acoustical System (SAS) for stress changes monitoring in elastic materials, constructions and rock masses [4].
The paper presents an innovative method for measuring stress changes in materials.
The SAS system can be an alternative method or complement to other methods of measuring changes in stress in different types of materials and structures.

The authors [17] found out that in structural materials the centers of destruction are formed at the nano- and microlevels.
Oil and Gas Engineering: Scientific and technical journal.
Gaysina, Distribution of Magnetic Field Parameters in the Surface Layer of the Material of Reaction Furnace Coils after Operation Period, Materials Science Forum. (2019) 653-659
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[23] Modern heat - resistant materials: Ref. ed.

After the ice in porous silk fibroin materials sublimate, many pores remain in them.
The pores in porous silk fibroin materials can form because of the ice particles sublimating.
This makes the pores in porous silk fibroin materials bigger.
Wang: Journal of Applied Polymer Science Vol. 79(2002), p. 2185 [10] M.
Tsukada : Journal of Polymer Science: Part B: Polymer.

Barcelona, Spain 2Department of Materials Science and Physical-Chemistry.
Progress in Materials Science, 116 (2021) 100736
Materials, 13 (2020) 2157
Journal of Materials Science, 53 (2018) 247-273
Journal of Materials Chemistry C, 24 (2017).

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