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Preparation of Na2S from Na2SO4 Using CO Xiaoyi Shen 1,a, Hongmei Shao 1,b, Zhimeng Wang1,c, Yuchun Zhai1,a 1School of Materials and Metallurgy, Northeastern University, Shenyang, Liaoning 110004, China ashenxy@smm.neu.edu.cn, bshm-0816@163.com, cwangzhimeng823@163.com Key words: Na2SO4·7H2O crystallization, Hexagonal wurtzite structure, Hydrothermal method, precipitant Abstract: Na2SO4 solution that was obtained from ZnSO4 solution after Zn2+ precipitation using Na2CO3 was used as raw material.
Experiments Materials and apparatus Na2SO4 solution that was obtained from ZnSO4 solution after Zn2+ precipitation using Na2CO3 was used as raw material.
Acknowledgement This work was financially supported by the Project Supported by National Natural Science Foundation of China No. 51204054 and the Fundamental Research Funds for the Central Universities N110402012.
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The variation of raw materials in terms of price, quality and availability, affects the feed ingredients.
A variety of raw materials may be used as ingredients, each of which provides different levels of nutrients.
Constraint (11) is employed to convert the percent inclusion of the raw materials into ton weight.
The case study data consists of 10 major feed products with 31 main raw materials.
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Because composite materials have various advantages over other materials, this is often the reason for this.
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Longitudinal strain and the hoop strain of column limbs, the Poisson ratio of combination of materials have been obtained.
At the later loading stage, the Poisson ratio of combination of materials begins increasing in a straight line until destroyed.
The Poisson ratio of combination of materials keeps 0.2 to 0.35 during the whole loading process, illustrating that the Confinement Effect is tiny in the whole test process.
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China 2School of Materials Engineering, Jinling Institute of Technology, Nanjing, Jiangsu 211169, P. 
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Carbonized materials were formally used as soil amendment material in Japan, and it was a common practice to apply the PA together with biochar.
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Experimental Methods Materials.
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Nanostructured organic materials have received considerable attention over the past decade.
Because of this nano-porosity and structure, these materials have very low fracture energy and could including them as brittle materials.
Because of this nano-porosity and structure, these materials have very low fracture energy and could including them as brittle materials and for a large-scale application of these nanostructure materials, we should solve this problem.
This method is well adapted to the characterization this nanostructure materials.
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This study used alumina fine as main raw materials to prepare the porous ceramic separation membrane supports.
Experiments Materials.
Figure 4 is the SEM pictures of the supports with the same materials prescription and sintering temperature at different holding time.
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Experimental Materials and Methods The test materials are domestic and imported Cu-2Ag alloy wirebars with diameter of 0.65mm, which are in drawing state and qualified products.
Grain refinement is the only strengthening method that can improve the strength and plasticity of materials at the same time.
Journal of Materials Research and Technology, 2022(18): 998-1008
Strengthening mechanism and research hot spot of high strength and high conductivity copper alloy[J] .Journal of material heat treatment, 2021, 42 (10): 18-26
Materials, 2019, 12(13):2051