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The 37th volume of the journal "Advanced Engineering Forum" includes peer-reviewed manuscripts presenting the engineering solutions and research results dealing with contemporary problems in applied materials science, mechanical engineering, building engineering, applied mechanics, power engineering and engineering management.

Simulation of expansive stress in cement-based materials subjected to sulfate attack Yin Guangji1, a, Zuo Xiaobao2,b ,Sun Xianghua3, c ,Tang Yujuan4,d 1 Nanjing University of Science & Technology, Nanjing 210094, China 2 Nanjing University of Science & Technology, Nanjing 210094, China 3 Nanjing University of Science & Technology, Nanjing 210094, China 4 Nanjing University of Science & Technology, Nanjing 210094, China a YinXJlove@163.com, b xbzuo@sina.com, c sxianghua@sina.com, d tyjdsr19891103@163.com Keywords: Sulfate attack; Cement-based material; Mechanics analysis model; Equivalent stress; Crystallization stress Abstract: For the volume expansive of cement-based materials subjected to sulfate attack, based on microporous mechanics, the model of representative volume element(RVE) is established to analyze the distribution of microcosmic expansive stress in RVE.
The relationship of RVE macroscopic Fig 4 The relationship of RVE macroscopic equivalent stress and the ettringite concentration equivalent stress and the initial porosity Summary This paper analyzes the macroscopic equivalent stress of RVE, which provides the basic for the analysis of equivalent elastic modulus of cement-basic materials under sulfate attack.
Long: Journal of the Chinese Ceramic Society Vol. 35(10) (2007), p. 1376-1381
[6] Jin Zuquan, Sun Wei and Zhang Yunsheng: Journal of the Chinese Ceramic Society 2006 Vol. 34(5), p. 630-635
[7] Zuo Xiaobao and Sun Wei: Journal of the Chinese Ceramic Society Vol. 37(7) (2009), p. 1063-1067

Degradation of optical properties occurs during recycling processes of plastic materials and the declining properties of recycled products could be improved by blending them with virgin materials.
Kamaruddin, Optimization of mechanical properties of recycled plastic products via optimal processing parameters using the Taguchi method, Journal Materials Processing Technology, Vol. 211 no. 12 (2011) 1989–1994
Maddah, Polypropylene as a Promising Plastic: A Review, American Journal of Polymer Science, Vol. 6 no. 1 (2016) 1–11
Endthen, Material value conservation: Development of design criteria for rigid plastic packaging, Material Science Forum, Vol. 936 MSF (2018) 110–115
Wilkes, A comprehensive investigation of the origins of surface roughness and haze in polyethylene blown films, Journal of Applied Polymer Science, Vol. 85 no. 11 (2002) 2396–2411

E-mail: wangfei36777@163.com Keywords: inorganic materials, experimental teaching, mineral materials Abstract.
Introduction The innovation in material science is the key to promote the progress of human history; therefore China is paying more and more attention to the development and applications of new materials.
How to develop the expertise of students in material science and increase their English proficiency is the focus of inorganic material specialty English teaching.
Girgin: Turkish Journal of Chemistry, Vol. 26(2002), p.431 [13]A.
Muromtsev: Inorganic Materials, Vol. 26(1990), p.104

This article presents a scientific review of the literature on biodegradable polymer composite materials based on polyvinyl chloride.
The main methods for studying the biodegradability of polymeric materials are considered.
In the process of analyzing the world scientific and patent - technical literature, developments in the field of creating biodegradable PVC materials were identified.
Journal of Polymer Science Part B Polymer Physic 45 (2007) 903 - 919 [8] S.
Robson Biodegradation of starch blended polyvinyl chloride films by isolated Phanerochaete chrysosporium PV1 // International Journal of Environmental Science and Technology ... 11 (2014) 339-348

Effect of Same Insulation Materials on Energy-Saving Potential of Different Buildings Chang Guo, Jian Yao* Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo, China email: yaojian@nbu.edu.cn Keywords: Energy-saving materials；energy-saving rate；building shape coefficient.
This paper analyzed the effect of same insulation materials on energy-saving potential of three different buildings by using the energy simulation program DOE-2.
Yuan, “Study on Residential Buildings with Energy Saving by 65% in Ningbo,” Journal of Ningbo University (Natural science & engineering edition).vol. 23, pp. 84-87, 2010
[5] HU Xing-yun, XU Jin and ZHANG Jin-quan, “Study on the Modern Rural Residence Planning with Regional Features of Fanshidu Village,” Journal of Ningbo University (Natural science & engineering edition), vol. 24, pp. 110-114, 2011
[8] GAO Hua-sheng, YANG Xiao-xian and CHEN Yu –hui et al., “Water Pollution Control in Rural Villages: Case Study,” Journal of Ningbo University (Natural science & engineering edition), vol.23, pp.74-78, 2010

Acknowledgements We would like to acknowledge the financial support of the National Natural Science Foundation of China (50905051and 50805042) and Natural Science Foundation of Zhejiang Province (Y1080004).
Atherton: Journal of Magnetism and Magnetic Materials Vol. 61 (1986), p. 48-60
Xiang: Journal of Zhejiang University - Science A Vol. 8 (2007), p. 1059-1064(in Chinese)
Sun: Journal of Magnetism and Magnetic Materials Vol. 309 (2007), p. 263-271
Zucca: Journal of Magnetism and Magnetic Materials Vol. 320 (2008), p. e915-e919.

An atlas of two-dimensional materials.
Advanced Materials 26 (2014) 4820–4824
Journal of Composite Materials 4 (1970) 492-499
Journal of Materials Research 4 (1989) 385-393
Advanced Materials Research 832 (2014) 292-297.

Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, Nizhny Novgorod 603950, Russian Federation akaterina_k1997@mail.ru, bildnv235@gmail.com, croman@iomc.ras.ru, dsmirnova_la@mail.ru Keywords: starch, acrylamide, chitosan, three-dimensional materials, porosity, sorbent, sorption, packing material Abstract.
The resulting material is promising as a sorbent of heavy metal ions and packing materials for transportation and storage.
A recognized disadvantage of starch-based materials is their sensitivity to moisture.
For creation of foamed materials based on it, it is necessary to obtain a water-soluble form.
Starch-based Biodegradable Materials: Challenges and Opportunities.

Absorbing Properties of Composite Material Plates of Multi-layer Absorbing Structure Jinglan Deng1,a Bing Feng 2,b 1，2School of Science, Wuhan University of Technology, Wuhan 430070, China ajldeng@whut.edu.cn, bfb031314105@163.com mail, Keywords: Absorbing materials, Graphite powder, Manganese dioxide, Absorption peak Abstract: Microwave absorbing material is currently being more and more widely applied in the world.
Functional Materials and Devices Vol. 8(3)( 2002), 8 P.213-217 [4] Guo-zhu Shen, XU Zheng, Ruiqi Cai: Journal of Tongji University (Natural Science Edition).
Functional Materials Vol. 37(2)( 2006), p.197-199
Patent 6,231,666. (2001) [7] Peng CH, Hwang CC, Wan J, Materials Science and Engineering B.
Radio Science .Vol. 24(6),(2009)p.1104-1107 [10] Liying Xing:Stealth Material (Chemical Industry Press, China 2004)