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Therefore, it is necessary to explore new materials that can protect and prevent these electromagnetic waves [2, 3].
In general, materials that can be used as absorbers of electromagnetic waves need to have electrical and magnetic losses [4].
Materials,14, 4148 (2021). https:// doi.org/10.3390/ma14154148
Mandal, Electromagnetic wave trapping in NiFe2O4 nano-hollow spheres: An efficient microwave absorber, Journal of Magnetism and Magnetic Materials, Volume 485 (2019) 43-48. https://doi.org/10.1016/j.jmmm.2019.04.033
Adi, The effect of Zn-dopant on the anisotropy constant and reflection loss of the Ba0.6Sr0.4Fe10-xZnxMnTiO19 (x = 0.1, 0.3, and 0.5), Journal of Magnetism and Magnetic Materials 553, 169172 (2022). https://doi.org/10.1016/j.jmmm.2022.169172

Materials and Methods Micro-printing technique was adopted to fabricate micro-patterned surface which is suitable for cell adhesion.
Journal of cellular biochemistry, 2010, 111(4):967-978
Journal of Zhejiang University SCIENCE B, 2010, 11(8):608-617
Science, 1993, 260:21
Science, 1994, 264(5159):696-8

Lecture Notes in Computer Science. 6922 (2011) 448-457
Banaszak, On Undecidability of Cyclic Scheduling Problems, Knowledge Science, Engineering and Management, Lecture Notes in Computer Science. 5914 (2009) 310-321
Jędrzejewski (Ed.), Journal of Machine Engineering. 8(2) (2008) 5-13
Journal of Machine Engineering, 12, 3 (2012)
Department for Strength of Materials and Computational Mechanics.

Research of Monitoring Deterioration of Milk by Using Surface Tension Coefficient and Viscosity Zhijie Mai, Fang Lin, Jianming Fan College of Science South China Agricultural University Guangzhou, China E-mail: mhero14@163.com Keywords: Deterioration of milk; surface tension coefficient; pulling-out method; viscosity Abstract.
These techniques involve optics, acoustics, science and other electronic technology, showing the potential use of physical methods to detecting deterioration of milk.
Required tension is depent by the liquid surface tension, the inner ring diameter and liquid materials, purity and other factors.
Acknowledgment This work was supported by the Principal Science Foundation of South China Agricultural University (No.4900-K09190) and Natural Science Foundation of Guangdong Province (No.10151064201000006).
[2] Yang Jianwen, Zhang Ling, Shi Li., “Design of Ultrasonic Intelligent Milk Measurement Instrument,” Journal of Shaanxi University of Science & Technology, vol. 23, no.5, Oct.. 2005, pp. 75-78

Removal of copper ion in industrial wastewater by magnetic flocculation experimental research Yong Gui Yang1, a, Yun long Yang2,b and Xiao hong Kang3,c 1 College of Environmental Science and Engineering, Taiyuan University of Technology, No.79, West Yingze Avenue , Wan bai lin District, Taiyuan City, Shanxi Province, 030024, China 2 College of Environmental Science and Engineering, Taiyuan University of Technology, No.79, West Yingze Avenue , Wan bai lin District, Taiyuan City, Shanxi Province, 030024, China 3 College of Environmental Science and Engineering, Taiyuan University of Technology, No.79, West Yingze Avenue , Wan bai lin District, Taiyuan City, Shanxi Province, 030024, China arickyong@163.com, brickyoung@live.cn, c 346637246@qq.com Keywords: magnetic flocculation; industrial wastewater; copper ions; polymeric ferric sulfate Abstract: An experiment on the removal of heavy metal copper ions from industrial wastewater by magnetic flocculation was studied and the influences
Materials and methods: Test equipment: UV751GD visible/UV-spectrophotometer pH-meter, six-electric union agitator, 250ml beaker, 125ml separator funnel, thermometer, pipette, and other test instruments.
References: [1] Shao Li Fen: Research progress of copper-containing electroplating wastewater treatment [J] Industrial Water & Wastewater 2007(03) [2] Sun Xiao Juan: Treatment and Comprehensive Utilization of Flotation Residue in Refinery [J] Journal of Changzhou University (Natural Science Edition) 2001(04) [3] Shen Wei guo, Qiu Tao: Treatment of Wastewater Containing Cu²⁺ by Macrospore Filter Technology [J] Journal of Changzhou University (Natural Science Edition) 2003(04) [4] Han jin Yong, Wu yong Mei: Printed circuit board process copper treatment of wastewater [J] China Resources Comprehensive Utilization2000 (05) [5] Wang ya Qiong: Treatment of wastewater containing Cu²⁺ by the electrochemical depositing method [J] Technology of Water Treatment1995 (06) [6] Li gui Qiong, Liu Chang Rong: All kinds of copper wastewater treatment and recovery [J] Resources Economization and Comprehensive Utilization1992 (02)

Realization of a ZVS Inverting Spot Welding Power Supply Pengshu Zhao*1,a, Xudong Wang2,b, Miaosen Yang3,c , Kai Kang 4,d 1,2,4School of Electrical & Electronic Engineering Harbin University of Science & Technology Harbin, 150080, China 3School of materials science & Engineering Harbin University of Science & Technology Harbin ,150040, China ae-mail: eldonz@163.com, be-mail: wxd6158@163.com, ce-mail: yangmiaosen@163.com Keywords: phase-shifted PWM ; ZVS; inverting spot welding ; Switch mode Abstract.
Acknowledgment The paper supported by the Scientific Research Fund of Heilongjiang Provincial Education Department (No. 11531031) Youth Foundation of Harbin University of Science & Technology.
Corresponding Author Pengshu Zhao, eldonz@163.com , (+86)13945664399 References [1] Zhicheng Deng ,Jun Lin ,Juntao Wang .The Development of Spot Welding Power [J] .Shanxi Science and Technology ,2007(1) :132-134 [2] Biao Cao ,Min Zeng ,Xiang Biao Zhu .
Chinese Journal of Mechanical Engineering ,2006(3) [5] Peipei Meng, Xinke WU, Research on Integrated Magnetics Soft Switching Full Bridge DC/DC Converter, [J].
Chinese Journal of Mechanical Engineering ,2012(3) [6] UC3875,datasheet on http://www.icpdf.com/

In 1964, British neurophysiologist WB.Ashby's "system and information”, effectively combined the information theory, biology and neurophysiology to make the information theory and natural science become one.
The two characteristics of information conveying in interface design made the tangible material world show up to people in invisible and virtual mode, and strengthened the contact with the real world.
People are aware that material needs are not all.
Journal of Chongqing University of Science and Technology (Social Sciences Edition), 4, 169-170 (2009) [5] Yi Li.: On interface Design.
Journal of Chongqing University of Science and Technology (Social Sciences Edition), 9, 166-167 (2010) [6] Zhao Zhiwei.: Interface design based on user experience.

Weld brazing of the galvanized sheet The materials used in experiments was S235 steel sheet (EN 10025:1993), having thickness of 1 mm, which was Zn galvanized.
Also using these filler materials based on copper the anticorrosive protection is unaffected.
They were obtained by setting the appropriate input data regarding the base material, additional materials and shielding gas Table 1.
Journal of Environmental Protection and Ecology, vol. 12, no.2A, (2012) pp. 1038-1046 [2] J.Bruckner, H.
Materials Science and Engineering, Vol. 499, (2009) pp.111-114 [4] A.

Zhang 1,b 1 Harbin University of Science &Technology, 52 Xuefu Road, Harbin, 150080, China awangtong@hrbust.edu.cn, bxfz79622.student@sina.com Keywords: WEDM in gas, Finish cut, Wire winding speed Abstract.
Experimental results have shown that WEDM in atmosphere offers a series of advantages such as better straightness accuracy and higher removal rate (material removal rate).
A tool steel 9SiCr was selected as the test material.
Acknowledgements Supported by National Natural Science Foundation of China (50105003), Funds of Heilongjiang Province for Oversea Scholars (1053HQ005) and Technological Research Project of the Education Department of Heilongjiang Province (10051046).
Kunieda: Chinese Journal of Mechanical Engineering, (2003) No.8, pp.76.

Lu 2,c 1 Key Laboratory of Advanced Structrural Materials,Ministry of Education, Changchun University of Technology,China 2 Faculty of Engineering and Resource Science, Akita University, Akita, Japan achenhua@mail.ccut.edu.cn, baiyunjun0505@126.com, cxiaoyelu@ipc.akita-u.ac.jp Keywords: TiH2-Al-Si-Nb alloy; spark plasma sintering; microstructure; oxidation behavior Abstract.
The stainless steel and Ni-base superalloy are two general valves materials, however, its higher density is not benefit to automotive lightweighting[1-3].
Because the materials with bcc crystal structure have a relatively larger number of slip systems, the deformation is easily.
Although the slip systems are few for materials with hcp crystal structure, it is quite brittle, thus more easily are broken into granule by applied force [9,10] .
Huang,Y.H, He: Chinese Journal of Nonferrous Metals.