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Japan started to study stratospheric airship platforms at an earlier time, and plays a leading role in areas such as materials, energy, wind forecasts, thermal analysis and tracking control, and many other key technologies.
Airship key techniques include aerodynamic design, structural design, energy, envelope materials, power plant, environmental data collection, simulation environment test and outfield test.
Envelope Materials.
Zhang : SPACECRAFT ENGINEERING Vol.17(2008),p 70 [5] Lindstrand P.
Qu: Materials Engineering Vol.8 (1993), p. 44 [10] J.H.

Literature Review In recent years, the development of biodegradable hydrogels for tissue engineering has advanced significantly, with a focus on both natural and synthetic materials.
However, these materials can degrade quickly and lack mechanical strength, often requiring modification or blending with synthetic polymers to improve their stability and functionality in tissue engineering applications [6].
"Poly (Vinyl Alcohol) Hydrogels: The Old and New Functional Materials".
Journal of Materials Science: Materials in Medicine, vol. 18, no. 10, 2007, pp. 1961-1968. https://doi.org/10.1007/s10856-007-3072-1
Journal of Materials Science: Materials in Medicine, vol. 6, no. 2, 1995, pp. 71-75. https://doi.org/10.1007/BF00120410

Research on the Key Techniques on 3D Virtual Campus System Xiuli Diao1,a Zhengguo Song2,b 1,2College of Information Science and Engineering Shandong University of Science and Technology Shandong Qingdao, China ae-mail: dxlszg@126.com, be-mail: szgdxl@126.com Key words: Virtual campus; Modeling; Map; Model; Construction Abstract. 3D virtual campus construction mainly includes several key techniques and links, such as material resources collection and processing (including campus CAD graphic design and material texture image), preliminary modeling of 3D building, model’s optimization and texture mapping, scene integration and rendering baking derived of 3D building and system integration platform and so on.
This paper attempts to study the key technology and the specific production process for every link of 3D virtual campus system.
As the three-dimensional modeling needs more texture materials and detailed processing, it requires much work in texture picture collection, sorting and processing.
It is on the base of the prepared material images and CAD maps to build primitive modeling in 3Dmax.
The first step is drawing the outline, then squeezing out with basic tools, and labeling green material.

Large Dairy Farms Biogas Energy Environment Engineering Technology Research Dong Yang1, a, Meng Zhang1,b, Linhua Zhang2, b, Xueting Liu3,b 1 Key Laboratory of Renewable Energy Utilization Technologies in Buildings of the National Education Ministry, Jinan 250101, China 2Shandong Provincial Key Laboratory of Building Energy Saving Technology, Jinan 250101, China 3School of Thermal Energy Engineering, Shandong Jianzhu University, Jinan 250101, China aydc1178@163.com, b476665085@qq.com Keywords: large dairy farms; dung waste; biogas engineering; technology.
Built in 1982 in Chengdu phoenix mountain is China's earliest farm animal husbandry king biogas engineering large biogas engineering [3].
Biogas Engineering Market Analysis and Forecast Biogas Market Analysis and Forecast.
Cow farms waste processing Biogas engineering report and pattern [A].
Large dairy waste anaerobic digestion engineering research [J].

Fig. 1: Five-Layer material and product engineering architecture Former works of KBS & KM institute.
Knowledge Management in Material Science & Engineering Knowledge Acquisition an Involvement of Semantic Technologies.
Knowledge and semantic based methods may be applied for representing and reasoning in material engineering, and consequently supporting the development of sustainable materials.
They work together, to e.g. gather market demands and developments for (smart) materials, run material innovation processes, evaluate material sustainability factors, gather consequences for material and product engineering, or publicize common research material.
[18] Virginia Tech, College of Engineering, Definition of Green Engineering, http://www.eng.vt.edu/green/definition, l. access 18.03.2015 [19] P.T.

According to [8], welding is a joining process producing coalescence of materials by heating them to the welding temperature, with or without the application of pressure or by the application of pressure alone, and with or without the use of filler metal.
Pearson correlation analysis was employed to investigate the relationships between human engineering factors and safety performance.
International Journal of Innovative Technology and Exploring Engineering 8(6), (2019) P 711-716 [7] OGP Human factors engineering in projects Report No. 454.
Journal of Construction Engineering and Management, 121, 166–171. doi.org/10.1061/(ASCE)0733-9364, (1995) 121:2(166)
Architectural Engineering and design management journal, 4(3-4):221-238. (2008).

Experiments of Laser Surface Engineering for the Green Remanufacturing of Railway Coupler C.Y.
To the E class steel, typical coupler metal, the related laser process variables and materials were test and optimized.
Mukherjee: Journal of Materials Science Vol. 33 (1998) p. 1287 [5] F.
Key Engineering Materials Vol. 218-220 (2002) p. 187 [6] D.
Singh: Journal of Materials Science Vol. 33 (1998) p. 3677 50µm

Indirect-direct band gap transition by van der Waals interaction engineering in MoS2/WS2 bilayer heterojunction Haining Cao1,2,3,a, Zhiya Zhang1,b, Mingsu Si1,c, Feng Zhang4,d, Yuhua Wang1,e 1Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730 000, China. 2Center for Computational Science, Korea Institute of Science and Technology, Seoul, 136 791, Korea. 3Nanomaterials Science and Engineering, Korean University of Science and Technology, Daejon, 305 350, Korea 4Key Lab of Photovoltaic Materials of Henan Province, School of Physics and Electronics, Henan University, Kaifeng, 475 001, China.
Our results demonstrate that electronic structure tailoring of two-dimensional layered materials should include both spatial symmetry control and interlayer vdW interactions engineering.
MoS2 belongs to another class of layered materials.
MoS2/WS2 Heterojunction with Interlayer vdW Interactions Engineering.
Similar method would be used to study other two-dimensional layered materials.

Experimental Study on Diesel Engine Intake Ports with Reverse Engineering Technology Li JIANGa, Zi-Yu WANGb,*, Xiu-Wei CHENGc and Chao-Yang LUd China North Engine Research Institute, Beichen, Tianjin 300400, China ajiangyushi586@sina.com, bzealyouth2002@126.com, cxiuweicheng2008@126.com, dluchaoyang@sina.com *Corresponding author Keywords: Reverse Engineering, Diesel, Intake Ports.
A intake port was developed for a four-valve diesel engine with reverse engineering technology, and different core boxes of intake port were made respectively by different measureing and manufacturing method, and were investigated in the steady-flow test with the original cylinder head of the diesel engine.
The Reverse-engineering of Intake Port Data Acquisition and Processing Profiling measurement in reverse engineering is important link of data acquisition, model reconstruction and the quality of surface rendering.
After joining together the three-dimensional structure of deformation due to cut sample material, can not have local structure cohesion.
Acknowledgement This research was financially supported by the National key laboratory Foundation of Diesel Engine Turbo Technology.

Current bone tissue engineering is using in vitro expanded mesenchymal stem cells (i.e. bone marrow stromal cells) and synthetic scaffolding materials to produce synthetic bone substitutes comparable to autologous bone.
Increasing data is showing that osteoinductive synthetic materials can attract mesenchymal stem cells in non-osseous tissues and form ectopic bone.
In vivo bone tissue engineering, by using osteoinductive synthetic materials to produce bone in soft tissues, would be another approach to produce synthetic "autologous" bone for bone repair.
Material and Methods Preparation of materials The osteoinductive Ca-P ceramics were prepared by using the wet-synthetic calcium phosphate powder through the H2O2 foaming method and sintering at 1100 o C for 3 hours.
B: in vivo tissue engineering bone graft.