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Researchers continue to be concerned about corrosion of materials, which motivates them to start projects to address the harmful impacts of this phenomena that affects the desired function of our materials, especially in industries where acid is used in the process of cleaning machines.
Introduction Corrosion is the destruction of materials due to reactions between chemical, biochemical, or electrochemical processes and the surrounding environment [1].
Surface science is very interested in the adsorption of organic molecules at the metal/solution interfaces because it can drastically change the properties of metals' corrosion resistance [11].
Brass material Table 1.
Patricia Idowu Popoola, “Corrosion propagation challenges of mild steel in industrial operations and response to problem definition,” in Journal of Physics: Conference Series, 2019. doi: 10.1088/1742-6596/1378/2/022006

Influences of Microelement on Microstructure and Mechanical Performance of Alite-Strontium Calcium Sulphoaluminate Cement Qiuying Li1, a, Lingchao Lu1, b, * and Soude Wang1, c 1School of Materials Science and Engineering, University of Jinan, Jinan 250022, China alijingyouth@163.com, bmse_lulc@ujn.edu.cn, cmse_wangsd@ujn.edu.cn Keywords: alite; strontium calcium sulphoaluminate; SO3; SrO.
Introduction Cement is an important building material.
The raw materials were chemical reagents CaCO3, SiO2, Al2O3, Fe2O3, SrCO3, SrSO4, CaSO4•2H2O and CaF2.
Acknowledgements This work was financed by Natural Science Foundation of Shandong Province (No.Y2008F49) and the “973” National Key Fundamental Research Plan of China (No.2009CB623101).
[3] B.Teng, X.Cheng, and J.Huang: Journal of Synthetic Crystalst (in Chinese), Vol. 28 (1999), p. 193-198

Laser-MIG Hybrid Keyhole Welded 6mm Steel/Aluminum Butt Joints Dongqi Lua*, Li Cui, Hongxi Chen, Yaoqing Chang, Zhibo Peng and Dingyong He College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124 a965214930@qq.com Keywords: Steel/Aluminum dissimilar alloy; hybrid welding; laser welding; tensile strength Abstract.
Experiment Experimental Materials.
The test materials for laser-MIG hybrid welding are E36 steel sheets and 5083 aluminum alloy sheets.
The mechanical properties of steel/aluminum dissimilar materials welded butt joints are mainly represented by the tensile strength of the joint.
Deschaux-Beaume, et al, Steel to Aluminium key-hole laser welding, Materials Science and Engineering: A, 447(1-2) (2007) 197-208

The samples behaved as soft magnetic materials, with magnetization levels ranging from 37 to 47 emu∙g-1.
Among the various methods for preparing these materials, the combustion reaction [5-10] stands out for being efficient, fast and safe, enabling the production of these materials on a laboratory scale with significant energy savings, short synthesis time, homogeneity and high yields of final product.
MATERIALS AND METHODS The Ni-Zn ferrite produced by combustion synthesis was prepared from a mixture of nickel nitrate (Ni(NO3)2.6H2O), zinc nitrate (Zn(NO3)2.6H2O), iron nitrate (Fe(NO3)3.9H2O) and urea (CO(NH2)2) as fuel.
Hankare: Solid State Sciences Vol. 14 (2012), p. 885
In: Journal of Nanoscience and Nanotechnology.

The high energy generated among the EHP may change the material thermo-physical parameters, affect the overall thermal mechanical properties, cause the material thermal degradation, appear the phenomenon of thermal recession and so on.
The Heat Conduction Model.The three-dimensional heat conduction equation for anisotropic materials is [21] (12) in which,,and is the thermal conductivity in the x, y, z direction respectively; is the specific heat capacity, is the density,is the heat generating rate,is the absolute temperature when the time variable is.When the right of (12) is greater than zero, indicating that the object to be heated; less than zero, meaning that the object is cooled, and when equal to zero, said that the object has a stable temperature.
Shell temperature is determined by the material in contact with, so its temperature trend is the same with the previous result.
:Journal of Mechanical Engineering,vol.45(2009), p.119-205(In Chinese) [13] D.R.
Gao, and J.H.Liu:Chinese Hydraulics & Pneumatics(2011),p.55-59(In Chinese) [14] R.Liu, and G.P.Lin.Research on improvement of actuator cooling with loop heat pipe:Journal of Civil Aviation Flight University of China, Vol.21(2010),p.48-51 [15] I.

The structure of the materials was confirmed by Powder X-ray diffraction.
However, most adsorbents, both natural and synthetic materials, are effective for As(V) [12,13], but they fail in the case of As(III)[14,15].
XRD patterns of the materials are shown in Figure 2.
Figure 3 shows nitrogen adsorption-desorption isotherms for the materials, which exhibit a typical type Ⅳ isotherm with an H1 hysteresis loop as defined by IUPAC [23].
Pore parameters for the materials are shown in Tabla 1.

Material and Methods Experimental Model Design.
Acknowledgments The financial support from the Financial Program of MWR (201201083), the National Basic Research Program of China (2011CB403303), and the National Natural Science Foundation of China (41071191) are grateful acknowledged.
Advance in Earth Sciences.
International Journal of Sediment Research.
Journal of Geographical Sciences.Vol.19 (2009), p.321-330.

When different electrode potential is added to WE or potential is changed or a different metal electrode is used, the value and change of the current on surface of different electrode can be obtained, which can be used to analyze the material and its content in the solution. 2.2 Serial Data Communications Network The advantage of RS485 lies in balanced transmission and differential receiver in the long-distance data transmission resulting in very high receiver sensitivity and the anti-interference ability for common mode noise.
The subject is funded by agricultural science and technology support program of Changzhou, Jiangsu Province and the priority Academic program development of Jiangsu higher education institutions(No.6-2011).
Journal of Tsinghua University. 48(8), 1311–1314.(2008)
Teng: Research on CAN bus intelligent data acquisition system based on embedded system, Journal of Hunan University Natural Sciences. 32(6), 110–112.(2005)
Drndarevic, Vujo, Bolic and Miodrag: Gamma radiation monitoring with internet-based sensor network, Instrumentation Science & Technology. 36(2), 121–133.(2008).

Collaborative Optimization Algorithm Based on The Penalty Function Zhixia Jiang1, a, Pinchao Meng2,b , Yanzhong Li3,c and Weishi Yin4,d 1-4 College of Science, Changchun University of Science and Technology, Changchun, Jilin, 130022 azhixia_jiang@126.com, bmengpc@cust.edu.cn, clyz@cust.edu.cn, d16153586@qq.com Keywords: Collaborative optimization; penalty function; relaxation factor Abstract.
Acknowledgement This material is based on work supported by Chinese Jilin provincial Natural Science Foundation under Grants 201215138.
References [1] J.Sobieski: AIAA Journal.
[5] Bangguo Lie, Xia okai Chen, and Yi Lin: Journal of Jilin University (Engineering and Technology Edition), Vol. 40(2010),p.1497-1501.

This extrapolates that if identical parameters of two thin walled cylindrical shells can be converted to each other, the geometries must have the equivalent scale factors and u must be identical, while the material properties E and ρ are not constraint.
Table 3 Circumferential waves of thin walled cylinderical shells 1st order 2nd order 3rd order 4th order 5th order The prototype 9 8 10 7 11 Model 1 9 8 10 7 11 Model 2 10 11 9 12 8 Model 3 5 6 7 4 8 Model 4 7 6 8 5 9 Model 5 9 8 10 7 11 Model 6 9 8 10 7 11 Model 7 9 8 10 7 11 Acknowledgment This work was supported by National Science Foundation of China (51105064), Postdoctoral Science Foundation of China (20100481200), and Fundamental Research Funds for the Central Universities of China (N100403007).
Journal of Sound and Vibration 195(2), 301–311 [3] Giancarlo Genta, Dynamics of rotating systems, Springer Science and Business Media Inc, New York, 2005 [4] Werner Soedel, Vibrations of shells and plates, third ed., Marcel Dekker Inc, New York, 2004 [5] Boris Krayterman, Gajanan M.Sabnis, Similitude Theory: Plates and shells Analysis, J.
Journal of Engineering Mechanics.110 (9)1247-1263 [6] Larry J.Segerlind, Applied finite element analysi, second ed., John Wiley and Sons, New York, 1984.