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From the perspective of the material science, the compound bioceramic is essentially a brittle material.
Table.1 The Chemical Analysis for the Compound Bioceramic Material Oxidizing Materials CaO P2O5 SiO2 Na2O Al2O3 Content（%） 40.22 25.03 21.27 9.95 1.83 We use the D32 micro-sclerometer to test the rigidity of achieved material and obtain that the rigidity of the compound bioceramic is more than 600kg/mm2.
The measured value of materials in this group is 11.27MPa.
References [1] Qingchun Zhang: The Mechanical Performance of the Ceramic Material (The Science Press, Beijing 1987), in Chinese
[5] Shifang Zhao: Chinese Journal of Dental Materials and Devices Vol.1(2) (1992), p. 68-70, in Chinese [6] Enge Wu: Chinese Journal of Dental Materials and Devices Vol. 1(2) (1992), p. 55-57, in Chinese [7] Hongguang Wen: Mechanics and Engineering Vol.12 (1994), p.145-147, in Chinese [8] The Department of Mathematics and Mechanics in Sun Yat-sen University: Probability and Statistics (People Education Press, Beijing 1980), in Chinese

Studies have shown that [4, 5, 6], like the granulated blast furnace slag, fly ash and silica fume and other pozzolanic materials, rice husk ash can significantly improve the performance of cement and concrete, and has a good application prospect.
Materials and Methods Materials.
Cement is 42.5 # ordinary Portland cement (OPC).The chemical compositions of raw materials are shown in Table 1.
Journal of Wuhan Engineering University, 1 (2009) 41-45(in Chinese)
Journal of Guangxi Academy of Sciences, 15 (1999) 190-195

Quality control Abstract:Architectural decoration decoration materials are used by people or decorations, the building and space for all kinds of surface treatment, the use of in order to improve the building comfort.In architectural decoration, engineering quality is directly related to the credibility of enterprises and the effect of the project, and use function.
Optimization of construction resource configuration Architectural decoration construction resources include resources and manpower, machinery, building materials.
good chemical stability and ornamental; Metal materials have high strength, stiffness, good machinability, high stiffness, light weight, beautiful appearance, good corrosion resistance, chemical stability, processing convenience.
Journal of wireless technology, 2011, (09) [2] Gao Xiaochun.
Journal of information science and technology, 2012 (02) [3] Ma Yi Wu Zhigong.

Singh, Thermal Conductivity of Nanofluids, Defence Science Journal 58 (2008) 600-607
Ai, Dependence of the thermal conductivity of nanoparticle-fluid mixture on the base fluid, Journal of Materials Science Letters 21 (2002) 1469-1471
Xu, A model of thermal conductivity of nanofluids with interfacial shells, Materials Chemistry and Physics 90 (2005) 298-301
, International Journal of Thermal Sciences 57 (2012) 152-162
Keblinski, Thermal transport in nanofluids, Annual Review of Materials Research 34 (2004) 219–246.

Outline of the Experiment Materials used.
Date, in: 4th International Conference on Materials Engineering and Nano Sciences (ICMENS), volume 840 of Proceedings of the IOP Conference Series: Materials Science and Engineering, IOP Publishers (2020)
Date, in: 7th International Conference on Engineering, Applied Sciences and Technology (ICEAST2021) , edited by API Conference Series: Materials Science and Engineering Publishing, Pattaya, Thailand (2020), in press
Date, in: 6th International Conference on Building Materials and Construction (ICBMC2021) , edited by IOP Conference Series: Materials Science and Engineering Publishing, Singapore (2021), in press
Makoto: Journal of JSCE, Ser.

Nanographene platelets (NGP-N008) were purchased from Angstron Materials.
Li, Fabrication and photocatalysis of CuO/ZnO nano-composites via a new method, Materials Science and Engineering B 150 (2008) 99-104
Stephen, Enhanced photocatalytic activity of ZnO/CuO nanocomposite for the degradation of textile dye on visible light illumination, Materials Science and Engineering C 33 (2013) 91-98
Zeng, et al., Graphene-based materials: Fabrication, characterization and application for the decontamination of wastewater and waste gas and hydrogen storage/generation, Advances in Colloid and Interface Science 195-196 (2013) 19-40
Houas, Synthesis, characterization and photocatalytic activity of ZnO-SnO2 nanocomposites, Materials Science and Engineering B 178 (2013) 1371-1379

The level of work safety is affected by the raw materials, technology and technical equipment used [Robert., 2020] A safety culture starts with the behavior of leaders.
The Severity Parameter Category Description Insignificant (1) No injury and/or minor material loss, material loss moderate, IDR 50,001 - IDR 100,00 Moderate (3) Requires serious treatment, loss of work time and/or substantial material loss, IDR 100,001 – IDR 1.000.000 Major (4) Resulting in disability / total loss of body function and/or substantial material loss, IDR 1,000,001 - IDR 3,500,000 Catastropic (5) Resulting in death and/or material loss, very large, > IDR 3,500,000 The matrix table is used to show the risk rating of the hazards in the work environment.
Work Accident Data Work Station Accident Source of danger Accident rate 2021 2022 2023 Sorting of raw materials Exposed to cuts from raw materials Sharp raw materials 2 1 2 Smelting Exposed to cuts from raw materials Sharp raw materials 1 1 2 Stepping on sharp metal Sharp raw materials 1 2 1 Casting Exposed to casting scrap metal Sharp scrap 2 3 1 Exposure to hot metal sparks Ladle position on the ground, furnace too high 3 1 4 Exposed hot metal Molten metal splatter 3 3 4 Ladle held Open assistive devices 1 2 1 Slashed raw products Sharp casting products 1 0 1 Finishing Exposed to metal chips in the finishing process Lathe scrap thrown to operator 2 5 4 Shortness of breath Sanding dust 2 3 3 Hearing injury Grinding noise 1 0 2 Dizziness and nausea Strong smell of paint 1 1 0 As a result of the calculation of the risk rating number (RRN )value, there are risks that must receive special attention because they have a high and medium risk according to the classification of the
Risk Level Weighting Work station Potential hazard Source of danger Potential hazard causes Likelihood Value Severity Value RRN Sorting of raw materials Exposed to cut from raw materials Sharp material Because the sorting process is still manual, when putting raw materials into the furnace can injure workers' hands Possible (3) Insignificant (1) 3 Smelting Exposed to cut from raw materials Sharp material Because the smelting process is still manual, when putting raw materials into the furnace can injure workers' hands Possible (3) Insignificant (1) 3   Stepping on sharp metal Sharp material Raw materials placed on the floor can be stepped on by workers at any time and cause injuries to the feet of workers Unlikely (2) Minor (2) 4 Exposed to foundry scrap metal Scrap material The casting media still uses soil media that is used many times, sometimes leaving casting residue that can injure feet and hands when making mold.
[2] Biggs, Adam T., and Russel, Dale W. , Safety underreporting during naval operations: Prevalence, associated risk, and several contributing factors, Jurnal: Safety Science, Volume 180, 2024 [3] Kuang, Hua Xia; Pan, Wen, and sun, Li-Yun, Putting workers’ safety front and center: Employee-organization exchange and employee safety performance, Journal of safety Research, Volume 91, pages 85-95, 2024

While composite materials will be a new development tendency in the future.
Journal of Shanghai Jiao Tong University, 1996, 31(3): 40-47
Intervention study on structure and properties of polyurethane materials [J].
Polymeric materials science and engineering. 2002, 18 (1): 141-144 [5] Liu Dubao, Bao Junjie, Tang Deng and so on, the research progress and application of functional polyurethane materials [J].
Journal of Jiangsu University of Science and Technology (NATURAL SCIENCE EDITION). 2007, 21 (4): 1-6

This phenomenon, which is considered as negative from the point of view of pulp fibres utilizing for paper manufacturing, could potentially find its positive application in other areas, e.g. in the civil engineering for production of lightweight composites, where the reduction of water absorption of natural fibre materials is desirable.
Takayuki, The Effects of Recycling on Pulp and Paper Properties, Japan Tappi Journal, vol. 56 (7) (2002) 986-992
In Japan Tappi Journal, 56 (6) (2002) 103-106
Holub, Properties Characterization of Chemically Modified Hemp Hurds, Materials, 7 (2014) 8131-8150
Geffert, Recycling of the Hardwood Kraft Pulp, in: Material Recycling, Trends and Perspectives.

They can be fabricated ​​from various types of materials.
Cosmeleata, Biomaterials and shape memory alloys, in Materials Science and Engineering Handbook (in romanian), Ed.
[10] Reclaru L; Unger RE; Kirkpatrick CJ; Susz C; Eschler PY; Zuercher MH; Antoniac I; Lüthy H; Ni-Cr based dental alloys; Ni release, corrosion and biological evaluation, Materials Science and Engineering C-Materials for Biological Application 32 (2012) 1452-1460,
[12] Miculescu F; Bojin D; Ciocan LT; Antoniac I; Miculescu M; Miculescu N; Experimental researches on biomaterial-tissue interface interactions, Journal of Optoelectronics and Advanced Materials, 9 (2007), 3303-3306
[14] Antoniac I; Vranceanu MD; Antoniac A; The influence of the magnesium powder used as reinforcement material on the properties of some collagen based composite biomaterials, Journal of Optoelectronics and Advanced Materials 15 (2013) 667-672