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Syntheses and thermo-decomposition process of the co-doping VO2(M) precursor Aihong Bia and Jinhua Zhub College of Science, Naval University of Engineering, Hubei 430033, China abiaihong@163.com; bzhujinhua123456@163.com Keywords: Precursor; Thermo-decomposition; Co-doping Abstract.
In this paper, the precursor doped with W6+ and Mo6+ ionic had been synthesized by oxalic acid, V2O5, (NH4)6W7O24·6H2O and (NH4)6Mo7O24·4H2O as raw materials.
The little difference between them might be because of the raw materials lost in the preparing process.
Wu: The Chinese Journal of Nonferrous Metals Vol. 11 (2001), p. 190.

Hot Tearing in Cast Aluminum Alloys Shimin Li1,a, Diran Apelian1,b and Kumar Sadayappan2,c 1Metal Processing Institute, WPI, Worcester, MA 01609 USA 2CANMET- Materials Technology Laboratory, Hamilton, ON L8P 0A5 Canada ashiminli@wpi.edu, bdapelian@wpi.edu, cKumar.Sadayappan@NRCan-RNCan.gc.ca Keywords: Hot Tearing, Aluminum Alloys, Process Parameters, Grain Refinement, Simulation Abstract MPI and CANMET, both members of the Light Metal Alliance, launched a research project to study hot tearing in aluminum alloys.
Outcomes The outcomes from this project have been presented in several articles that has been either published or submitted to professional journals.
The effect of mold temperature, mold material and pouring temperature on the susceptibility of hot tearing is also investigated, and the results agree well with the experiments.
Acknowledgments The authors gratefully acknowledge the member companies of the Advanced Casting Research Center for their support of this work, and for their continued support of research focused on the science and technology of metal casting at Worcester Polytechnic Institute.
The authors also thank Geethe Nadugala of CANMET Material Technology Laboratory, and Dr.

Introduction Traditionally, the optimal design of structures formed by some objective function together with the requirement to minimize or maximize its complex requirements, taking into account the efficiency and adaptability, as well as restrictions on the material and labor resources [1].
The objective function, allowing estimating the total cost of building construction (design costs, the cost of materials (concrete, rebar, mortgage details), the cost of production of construction, transportation and installation): (1) Where – production cost of 1m3 of concrete "in work"; – Production cost of 1t reinforcement steel "in work"; - Volume of concrete k-th plate; - Volume of this type of reinforcement steel; KC , KW - Coefficient of recount; coefficient of winter appreciations; - Additional costs, including reinforcement steel for the manufacture of frames and inserts, framing technological holes overlap and anchorage.
Application of the method of search engine optimization for C and J-procedure reveals the carrying capacity of the reserve and to provide material savings by reducing the height plate and flow of fixtures by 10-15%.
An overview of simulation optimization via random search //Handbooks in operations research and management science. – 2006. – Т. 13. – С. 617-631
Random search for hyper-parameter optimization //The Journal of Machine Learning Research. – 2012. – Т. 13. – С. 281-305

Acknowledgement This work is supported by Natural Science Foundation of Jiangsu Province under Grant No.
Eizenberg, “Physical mechanism of progressive breakdown in gate oxides”, Journal of Applied Physics, 2014, 115(22):224101-224101-7
Groeseneken, “Relation between breakdown mode and location in short-channel nMOSFETs and its impact on reliability specifications,” IEEE Transactions on Device and Materials Reliability, 2001, 1(3):163-169
Krautschneider, “Impact of Soft and Hard Breakdown on Analog and Digital Circuits”, IEEE Transactions on Devices and Materials Reliability, 2004, 4(4):667-680.

Synthesis of Lawsone as Dye Hong Li1,a*,Rui Liu2,b 1,2 School of Textile and Material Engineering of Dalian Polytechnic University, China alihong@dlpu.edu.cn, bwoliurui@126.com *Corresponding author: 86-411-86323438 lihong@dlpu.edu.cn Keywords: 2-hydroxy-1,4-naphthoquinone; Chemical synthesis; Natural dye; Dyeing Abstract.
Experimental Materials Acetic anhydride and sulfuric acid purchased from Tianjin Damao Chemical Reagents Factory. 1,4-naphthoquinone purchased from Alfa Aesar Company.
The sample were washed in standard soap solution at 60˚C for 30 minutes, keeping liquor to material ratio as 1:50.
Moradian, Synthesis and Application of Some Alkali-clearable Azo Disperse Dyes Based on Naphthalimide Derivatives, Journal of the Chinese Chemical Society. 56 (2009) 1035-1042
[3] Zin Mar Win , Moe Moe Swe, Purification of the Natural Dyestuff Extracted from Mango Bark for the Application on Protein Fibres, Proceedings of World Academy of Science. 36(2008) 540-544

Influence of the nitridation time after the Al pre-seeded layer on the properties of GaN layer grown on Si (1 1 1) Dongguo Zhang a, Zhonghui Li b *, Daqing Peng c, Xun Dong d Science and Technology on Monolithic Integrated Circuits and Modules Laboratory, Nanjing Electronic Devices Institute, Nanjing, 210016, China adongguozh@126.com，bzhonghuili@126.com, cpengdaqing1@126.com, dxundong@126.com Keywords: MOCVD, GaN, Si substrate, cracks Abstract.
Trimethylgallium (TMGa), trimethylaluminum (TMAl), and ammonia (NH3) were employed as the reactant source materials for Ga, Al and N, respectively.
Fig. 1 Discoid defect on the surface of sample A After growth, on the sample surface we found many distinct discoid defects with size reaching millimeter level (Fig. 1), which would limit the material aspects of the application of the device.
Enhanced RT-PL intensity implied a reduction in the density of the nonradiative centers and an improvement of the material quality.
Hirosawa , et al , Journal of Crystal Growth 128, 391 (1993)

Lee1, c 1 Light Metal Division, Korea Institute of Materials Science, Changwon 790-784, Korea akyn1740@kims.re.kr, bkimsw@kims.re.kr, clys1668@kims.re.kr Keywords: hydro-mechanical forming, Al-Mg alloy, formability, gas blow forming Abstract Hydro-mechanical forming of Al sheet was investigated in the present study in order to fabricate automotive part having a complicated shape using Al 5052 alloy with a conventional formability which has been known to be quite lower compared to deep drawing steels.
References [1] Roadmap of the European Technology Platform for Advanced Engineering Materials and Technologies (2006)
[3] Feliks Stachowicz, Formability of aluminum alloy sheets, Journal of Mechanical Working Technology, 13 (1986) 229-235.

Experimental Modal Analysis of the Industrial Flat Sewing Machine Based on PolyMax Algorithm Zhang Li1, a, Su Bin1,b, Feng Tao1,c, Tian Ye1,d, Jiang Yue Peng1,e 1Beijing Technology and Business University, Materials and Mechanical Engineering Institute, Beijing, China, 100048 a zhangli@th.btbu.edu.cn, b xiaotiancooper@163.com, c fengt@th.btbu.edu.cn, d tianye25910@sina.com, e jyuepeng@yahoo.cn Key words: experimental modal analysis; industrial flat sewing machine; PolyMax algorithm modal assurance criterion Abstract.
Stylios, G.Xu, Y.M [3] discussed the distribution of the penetration force profile of the sewing machine needle point and conducted experimental measurement; Sedlatschek, Robert L, Wiehl, Frederick R., Rutherford and John L [4] researched the design and development of glass fiber reinforced sewing machine structure in the field of composite materials.
Acknowledgement The paper is supported by the National Science and Technology Support Project (No.2011BAF12B00-2).
Journal of the Textile Institute, 1995, ISSN: 00405000 [4] Sedlatschek, Robert L. ; Wiehl, Frederick R. ; Rutherford, John L.

The latter infers to the higher specific strength materials.
[5] ASTM E10-18, Standard Test Method for Brinell Hardness of Metallic Materials, ASTM International, West Conshohocken, PA, 2018 [6] K.
Ankamma, International Journal of Innovative Research in Science, Engineering and Tech., 5 (2007) pp. 3411-3416

Kim2, c 1 Light Metal Division, Korea Institute of Materials Science, Changwon 790-784, Korea 2 Agency for Defense Development, Daejeon 305-152, Korea akyn1740@kims.re.kr, bsshong@add.re.kr, ckimhg@add.re.kr Keywords: Inconel 718, blow forming, diffusion bonding, diffusion brazing Abstract Superplastic forming has been known for the ideal process for manufacturing complex parts.
Xing, et al., Journal of Materials Processing Technology 151 (2004) 196–202