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It is the reason why the coal fly ash is minerals rich and has been used in wide applications such as cement materials, geopolymer and refractory products [2,3].
Both methods use toxic chemicals, some of them are very corrosive materials, such as sulfuric acid, nitric acid, and peroxide[5-9] .
Clifford, “The organic geochemistry of coal: from plant materials to coal”
Saikia, “Promising carbon nanosheet-based supercapacitor electrode materials from low-grade coals,” Microporous and Mesoporous Materials, vol. 253, pp. 80–90, Nov. 2017, doi: 10.1016/j.micromeso.2017.06.030
Steel, “A study into the effect of cleat demineralisation by hydrochloric acid on the permeability of coal,” Journal of Natural Gas Science and Engineering, vol. 36, pp. 931–942, Nov. 2016, doi: 10.1016/j.jngse.2016.11.003

Modern scanning electron microscopes (SEMs) increase the ability to study a wide range of materials.
Introduction Ferroelectric materials have been widely used in many areas of technology and science.
The high purity (>99%) PbO, La2O3, ZrO2 and TiO2 fine powder were selected as starting materials.
Xu: Ferroelectric Materials and Their Applications (North-Holland, Amsterdam, 1991)
Faryna: Archives of Metallurgy and Materials, Vol 51, 1, (2006), p. 75

Introduction Microcellular polymer materials have attracted much attention because of their scientific interest and potential applications.
Experimental Materials polypropylene (PP, T30S) was purchased from Peking Yanshan Petrochemical Corporation.
Journal of Applied Polymer Science, Vol. 156-166(2007), p. 75 [2] M.
Journal of Chong Qing University In Chinese.
Journal of Materials Science, Vol. 2397-2401(1997), P. 32 [12] N.

Zinc Oxide Nanostructures Formed by Wet Oxidation of Zn Foil Christian Mark Pelicano1,a, Zainovia Lockman2,b, Mary Donnabelle Balela1,c 1Department of Mining, Metallurgical and Materials Engineering, University of the Philippines 1101 Diliman, Quezon City, Philippines 2School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia 14300 Nibong Tebal, Penang, Malaysia acopelicano@upd.edu.ph, bzainovia@eng.usm.my, cmdlbalela@gmail.com Keywords: Wet Oxidation, Zinc Oxide Nanostructures Abstract.
Acknowledgment The authors would like to thank the Department of Science and Technology-Engineering Research and Development for Technology (DOST-ERDT) for the research assistance.
Liu et al., “A comprehensive review of ZnO materials and devices,” Journal of Applied Physics, 98 (2005) 1–103 [3]S.
,“Leaf-like ZnO nanostructure and its excellent photocatalytic activity”, Materials Letters, 122 (2014) 1–4 [10] Gang Meng et al.,”One step synthesis of vertically aligned ZnO nanowire arrays with tunable length”, Applied Surface Science, 256 (2010) 6543–6549 [11] H.
,“Comprehensive study of ZnO nanostructures grown using chemical bath deposition: from growth to application”, Smart Nano-Micro Materials and Devices, 8204 (2011) 10 [18] Ling Ding et al.

Due to the easy separation of solid catalyst, it is thought as environmental friendly and these catalysts will be potential material in the synthesis of fine chemistry.
Heck and related coupling reactions have gained considerable attention as the resulting products have been applied as intermediates in the synthesis of materials, natural products, and bioactive compounds [1].
Acknowledgments This work was financially supported by Research Program of Science and Technology at Universities of Inner Mongolia Autonomous Region and The Region Open Major Basic Research Projects of Inner Mongolia Autonomous (20130902).
References [1] Hui Li, Zhonghong Zhu, Hexing Li, Ping Li, Xinggui Zhou, Journal of Colloid and Interface Science 349, 613–619, (2010)
Thakur: Journal of Molecular Catalysis A, Chemical 157, 275-278, (2000)

The electrodes used are three pairs or six pieces with different carbon graphite materials.
Heterotrophic bacteria play an important role in maintaining water quality balance because they can digest materials directly from the abiotic environment, such as fish excretion or dead organisms in aquatic ecosystems.
The increasing speed at the beginning of the measurement is related to the activity of breaking down complex organic materials by bacteria.
Healthy Agriculture, International Conference on Science and Applied Science (ICSAS) (2018) 1-8
Identification of Total Ammonia Nitrogen (TAN) Degrading Bioremediation Bacteria, Marine Journal: Indonesian Journal of Marine Science and Technology. 14 (2021): 20-29

Molhotra, “High volume fly ash system: Concrete solution for sustainable development,” ACI Materials Journal, vol. 97, no. 1, pp. 41- 47, 2000
[11] ACI committee 226–87, “Ground granulated blast-furnace slag as cementitious constituent in concrete, ACI Materials Journal, pp. 327–342, 1987
Iwaki, “Strength Development of concrete incorporating high level of ground granulated blast- furnace slag at low temperatures,” ACI Materials Journal, vol. 97, no. 1, pp. 66- 70, 2000
Emery, “Sulphate resistance of a canadian slag cement,” ACI Materials Journal, vol. 87, No. 6, pp. 547-555, 1990
Mantel, “Investigation into the hydraulic activity of five granulated blast furnace slag with eight different Portland cements,” ACI Materials Journal, vol. 91, no. 5, pp. 471-477, 1994

Impacts of acid treatment on the characteristics of native corn starch granules Xin Jin 1，2a ,Hou Shuanqing 1,b, Sha Xiaoxu 1,c, Yu Liang 1,d 1State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin 300160, China; 2Rongsheng Petrochemical Co.
Introduction The development and production of biodegradable starch-based materials have been spurred by oil shortages and the growing interest in easing the environmental burden of petrochemically derived polymers [1-3].
Plasticized starch is one of the most studied materials due to its renewable origin, biodegradability and low cost.
Experimental detail Materials Normal corn starch was obtained from Tianjin Zhongying Company.
[9]L.Hang, J.Zhou, Z.Yang, Journal of South China University of Technology (Natural Science), Vol.26(1998),p.18 （In Chinese）

Chinese Journal of Shanxi Architecture. 32(6), 89--90 (2006)
Chinese Journal of Rock and Soil Mechanics. 27(3), 505--508 (2006)
Advanced Materials Research, Vol. 250-253(2011), p. 1723-1727
Advanced Materials Research, Vol. 255-260(2011), p. 1862-1866
Journal of Shanghai Jiaotong University. 43(6), 976--980 (2009).

This research based on the use of local materials is significant for the development of the construction technology branch in Moldova.
Since the 2000s, construction entities in the Republic of Moldova have started using imported masonry materials.
Limestone blocks belong to natural, ecological materials, which are extracted with a low degree of environmental pollution.
Materials Science Forum, vol. 1074, Trans Tech Publications, Ltd., 8 Nov. 2022, pp. 161–167.
Construction and Building Materials 47 (2013): 1372-1380