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Effects of sodium citrate on MAO process and characteristics of coatings fabricated on AZ91D magnesium alloy Shuyan Wang1, a,*, Yongping Xia1, b, Li Liu1, c 1Provincial Key Lab of Advanced Welding Technology, Jiangsu University of Science and Technology, Zhenjiang, 212003, China awsy101010@126.com, bxypnjit@163.com, cliulielvis@126.com Keywords: magnesium alloy; microarc oxidation; electrolyte; corrosion resistance Abstract.
Caton, Magnesium-an old material with new applications, Mater.
Dowey, Plasma electrolysis for surface engineering, Surf.

Design and Simulation about Linkage of Caterpillar Beach Cleaner’s graps Yukun Zheng a, Xiaohong Ge * and Liange Ouyang School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China azykfiller@163.com Keywords: Linkages, Flex Body File, Rigid-Flexible Coupling.
After establishing finite element model of the flexible connecting rod mechanism, the Q345’ s material properties were given to connecting rod mechanism.
Selected the external connection point corresponding ADAMS model key point, replaced the original rigid model of connecting rod mechanism with flexible body model conversion of it, generated rigid-flexible coupling model, as shown in figure 4, after the flexible body replaced a rigid body, constraint of flexible connecting rod mechanism and rigid parts was supposed to be reset Fig. 3 The external node and the rigid region of the connecting rod mechanism Fig.4 The rigid- flexible coupling model Since the power source of the grab machine came from the hydraulic cylinder, so we set moving deputy-driver in the three hydraulic cylinders.

Lee 2 1 State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P.
R. of China 2 Department of Civil and Structural Engineering, The Hong Kong polytechnic University, Hung Hom, Kowloon, China Keywords: LPD method, Substrates, Composition, Microstructure Abstract.

Experimental research on performance of Water-Cooled VRF system in winter in Shanghai Song Yingqian1, a, Fan Rui2,b and Long Weiding3,c 1 Tongji university, College of Mechanical Engineering, Shanghai 201804, China 2 Tongji university, Sino-German College of Applied Sciences, Shanghai 200092, China 3 Tongji university, Sino-German College of Applied Sciences, Shanghai 200092, China asongyingqian@163.com, b fan_rui@163.com, cweidinglong163@163.com Keywords: Water-Cooled VRF system; Performance analysis; experimental research.
The pipe material is PE and pipe diameter is DN25.
Therefore, detailed analysis and evaluation of operating parameters and energy parameters of the entire air conditioning system is the key step to analyze the equipment performance.

Near-Infrared Emitting Heterobinuclear Zn-Ln (Ln = Nd, Yb, Er,and Gd) Complexes Based on a Novel Asymmetric Schiff-base Ligand ZHAO Shun-Sheng1,a 1College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P.
Introduction Much recent effort has been devoted to design and synthesis of luminescent lanthanide (Ln) complexes with long-lived and characteristic line-like emission bands (near UV to visible and NIR regions) [1], due to their potential applications in bioassays, medicine and material science [2-4].
Acknowledgement This work is funded by the National Natural Science Foundation of China (Grant Nos 21103135 and 21073139), Natural Science Basic Research Plan in Shaanxi Province of China (Grant No. 2011JQ2011), Scientific Research Program Funded by Shaanxi Provincial Education Commission (No. 12JK0622), the Open Foundation of Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecular Chemistry at Northwest University (Grant No. 2010025) and Foundation of Xi'an University of Science and Technology (Grant No. 2010QDJ030).

Then it has the recognition and high adaptability of the operation object, such as grab and distinguish the different shape, different size and different quality of material object, which improve the ability that can contact with the surrounding environment directly.
The objective function is the key to the whole optimization design.
Fleming, “ Multiobjective genetic algorithms made easy: selection, sharing and mating restriction,” In 1st IEE/IEEE International Conference on Genetic Algorithms in Engineering systems, Sheffield, England, 1995

Phase Stability, Structure and Thermodynamics of Modified Ni- and Fe-Aluminides Sangeeta Santra Department of Materials, CfAS, University of Oxford, UK sangeeta.santra@gmail.com, sangeeta.santra@materials.ox.ac.uk Keywords: Superalloy, aluminides, bond coats, phase equilibria, defects, thermodynamics.
The high thermal expansion coefficient helps accommodate large strains induced due to mismatch between the coating and the underlying material.
These key features can be conducive to alloy design
The Al-Fe forms a key subsystem for the bond coat purpose.
Therefore, the properties of a modified bond coat can be engineered by regulating either composition or temperature or both.

Application of Heteropolyacid-Based Heterogeneous Catalysts for Conversion of Oleochemicals into Renewable Fuels and Other Value-Added Products Ali Sabri Badday, Ahmad Zuhairi Abdullah*, Keat-Teong Lee School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia.
The naturalization using basic materials creates large amount of salts to be disposed off into the environment [29].
Therefore, they recommended the dispersion of the salts on appropriate support materials.
Murphy, Identification and characterisation of genes and enzymes for the genetic engineering of oilseed crops for production of oils for the oleochemical industry: a review, Ind.
Advanced Catalysts and Nanostructured Materials, Academic Press, San Diego, 1996, pp. 435-451

The choice made is also not unique and highly dependent on engineering experience and existing pre- knowledge.
Assuming an isotropic material behaviour and with Poisson's ratio, ν = 0.33, taken from the data sheet the corresponding Young's modulus is given by the relation E= 2G(1+ ν).
However, due to the variety of the modelling assumptions, the test data uncertainties, the parameter sets and the control parameters of the numerical procedures a robust black box procedure to be applied without engineering experience can presently not be expected.
Of the DAMAS 2005, Key Engineering Materials, Trans Tech Publications., Zürich, Switzerland (2005) [2] Stöhr, S. and Link M.: Proc. of the International Modal Analysis Conference IMAC XXIV, St.Louis, USA, 2006 [3] Link, M., Proc. of NATO Advanced Study Institute, Sesimbra, Portugal, May 1998 in "Modal Analysis and Testing"(J.M.M.
To be published in: Proc. of International Conference on Engineering Dynamics, ICED 2007, University of Lisbon, IDMEC (2007) [5] Lauwagie T. and Dascotte E.: Layered Material Identification Using Multi-Model Updating.

El-kenawy15,k 1Energies and Materials Research Laboratory, Department of Matter Sciences, Faculty of Sciences and Technology, University of Tamanrasset, Tamanrasset 01300, Algeria, 2Laboratory of Mathematics Modeling and Applications, Department of Mathematics and Computer Science, Faculty of Material Sciences, Mathematics and Computer Science, University of Adrar, Adrar 01000, Algeria 3Centre de Développement des Energies Renouvelables (CDER), 01000 Adrar, Algeria 4Department of Surveying Engineering, Faculty of Civil Engineering, Shahid Rajaee Teacher Training University, 16785-136, Tehran, Iran  5Department of Solar and Space Researches, National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt 6Department of Physics, Faculty of Physical Sciences, University of Calabar, 7Department of Civil, Environmental and Natural Resources Engineering, Lulea University of Technology, 97187, Lulea, Sweden 8Engineering and Architecture Faculty, Nisantasi University
For the SA-ELM model, the key hyperparameters are the population size and number of generations used by the search algorithm.
Consent for publication: We want to publish identifiable details, including text, material and methods, figures, and tables published in the Journal.
Bailek, “Combined Thermal Performance Enhancement of Parabolic Trough Collectors Using Alumina Nanoparticles and Internal Fins,” in International Journal of Engineering Research in Africa, 2022, vol. 62, pp. 107–132