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A Comparison of Active and Semi-Active Sliding Mode Controllers Applied in Vibration Reduction Systems SNAMINA Jacek a,*, ORKISZ Paweł b AGH University of Science and Technology Faculty of Mechanical Engineering and Robotics, Department of Process Control, Al.
Acknowledgement The research work has been supported from funds of the Polish Ministry of Science and Higher Education, carried out under the statutory WIMiR/KAP No. 11.11.130.958.
Rajamani, Vehicle dynamics and control, Springer Science & Business Media, (2011) [2] R.
Isermann, Mechatronic systems—innovative products with embedded control, Control Engineering Practice 16.1, p.14-29, (2008) [3] YM Sam, JHS Osman, MRA Ghani, A class of proportional-integral sliding mode control with application to active suspension system, Systems & control letters 51.3 p. 217-223, (2004) [4] H Imine, L Fridman, H Shraim, M Djemai, Sliding mode based analysis and identification of vehicle dynamics, Springer Science & Business Media, 2011
Sliding mode control on electro-mechanical systems, Mathematical problems in Engineering 8.4-5 p.451-473, (2002) [6] Y Shtessel, E Christopher, L Fridman, A Levant, Sliding mode control and observation, Birkhäuser, (2014) [7] V Neelakantan, G Washington, Vibration Control of Structural Systems using MR dampers and a'Modified'Sliding Mode Control Technique, Journal of Intelligent Material Systems and Structures (2007) [8] J.

Stability of Neutral Silicon Interstitials in 3C- and 4H-SiC: A First-Principles Study Ting Liao 1,2,3,a and Guido Roma3,b 1 High-performance Ceramic Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China 2 Graduate School of Chinese Academy of Sciences, Beijing, 100039, China 3 Service de Recherches de Métallurgie Physique, CEA Saclay, 91191 Gif sur Yvette, France a tliao@imr.ac.cn, bguido.roma@cea.fr Keywords: Defects, diffusion, first principles calculations, semiconductors Abstract.
Defect energies calculated from DFT are expected to be quite accurate, nevertheless in several cases it has been shown that a higher level of theory than for the description of the bulk material is necessary [13, 14].
The fact that k-point sampling of the BZ has to be carefully considered comes from two reasons: first, the screening in the bulk material has to be correctly described; second, the defect levels themselves can show a dispersion with k.
Hopkins , Silicon Carbide and Graphite Materials for Fusion Reactors.
Colombo: Journal Nucl.

The very aggressive environment of the human organism, in which electrochemical reactions occur, easily causes corrosion of the implant material.
For this reason, materials with a high chemical stability - precious metals (electrochemically very stable) and metals capable of forming a passivating film of oxide (e.g.
Because the ranking of materials according to their H/E ratio can provide extremely close agreement to their ranking in terms of wear [23], Table 1 gives the values of resistance to plastic deformation (H3/E2) and plasticity index (H/E) [23, 24].
Coat.Technol., 93 (1997), p. 119 [5] Sawicki J., Górecki M., Kaczmarek Ł., Gawroński Z., Dybowski K., Pietrasik R., Pawlak W., Chiang Mai Journal of Science, 40(2013), p. 886 [6] S.
Saramago, Surf.& Coat.Techn. 2009, 203 (24), p. 3701 [18] Niinomi M., Metallurgical and Materials Transactions A, 33 (2002), p. 477 [19] R.

Thomas, Considerations Regarding Reactive Diffusion: Parabolic and Linear Rates, Metals Materials and Processes 11, (1999) 217- 232
Szabo, “Segregation in Nanostructures” in “Advances in Nanophase Materials and Nanotechnology” Vol.
Beke) special issue of Journal of Metastable and Nanocrystalline Materials, Vol. 19 (2004), p. 107-128 [46] A.L.
Doherty, Grain Boundary Motion, Diffusion-Induced, in Encyclopedia of materials science and engineering.
Beke, Grain boundary diffusion induced reaction layer formation in Fe/Pt thin films, Applied Physics A: Materials Science and Processing, 115 (2013) 203 [91] S.S.

In recent years, Zhejiang University research on experimental and theoretical study of the thermoacoustic engine and the pulse tube refrigerator driven by thermoacoustic engine, the Chinese Academy of Sciences Institute of Physical and Chemical research on high frequency standing-wave thermoacoustic engine test study [3].
There are many factors influencing properties of thermoacoustic conversion, such as the material, length, pore diameter and wall thickness of stack, position of stack in sound filed and so on.
Tab.1 Axial thermal parameters of different stacks Stack material Thermal conductivity κ[W/(m.K)] Penal factor of heat conduction fc Equivalent axial thermal conductivity κ’[W/(m.K)] Polyester film spiral stack 0.19 1 0.19 Honeycomb ceramic stack 1.5 1 1.5 stainless steel mesh stack 24.5 0.110 2.695 copper wire stack 398 0.021 8.358 Radial Heat Conduction.
And it can be drawn as follow: (2) where cp is specific heat capacity at constant pressure, δκis the penetration depth of heat, ρis the density of stack material.
Journal of the Acoustical Society of America, Sep 1992, 92(3):1551-1563

Kaligetas formation arranged from the resulting material results in activity volcanic form lava and lava flows, breccia volcanic and sandstone tuff with range average density of sand tuff 1.92-2.40 gr/cm3.
Kaligetas formation arranged from the resulting material activity volcanic form lava and lava flows, breccia volcanic and sandstone tuff with range average density of sand tuff 1.92-2.40 gr/cm3.
Kaligetas formation arranged from the resulting material activity volcanic form lava and lava flows, breccia volcanic and sandstone tuff with range average density of sand tuff 1.92-2.40 gr/cm3.
Line 1, 2 and 3 on the top layers is Formation Kaligetas arranged from the resulting material activity volcano like lava and lava flows, breccia volcanic and sandstone tuff with range average density of 1.92-2.40 gr/cm3.
Journal of Physics: Conference Series 1943, (2021)

Application and Mechanism Study of a Novel Copolymer for Filter Aids on Wet-process Phosphoric Acid Guangchao Du1, a, Dejun Fei1, b*, Jianxun Wu2, Yagu Dang1, Yong Liu1, Jie Xu1 1School of Chemical Engineering 2School of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan Province, China ascuduguangchao@163.com, b*scufeidejun@163.com Keywords: Novel copolymer, filtration aiding, wet-process phosphoric acid, electrostatic neutralization, flocculation Abstract.
Introduction Wet-process phosphoric acid (WPA) is one of the important raw materials for the production of fertilizer and phosphate, and the output of WPA plays a decisive role in fertilizer and phosphate industry [1, 2].
Experimental materials Dimethyl diallyl ammonium chloride (DMDAAC, 60%, w/w aqueous solution, an industrial product) was obtained from Shun Dali Polymer Corporation.
Feng: Journal of Filtration and Separation.

Efficient production of biodiesel from rapeseed oil deodorizer distillate: One-pot esterification and transesterfication with compound lipases Zhennan Zhu1, a, Li Xu1, b, Houjin Zhang1,c, Yunjun Yan1,d 1Key Laboratory of Molecular Biophysics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, China azhennan_zhu@126.com,bxuli1881@yahoo.cn,chjzhang@mail.hust.edu.cn dCorresponding author.
Materials and methods Materials Rapeseed oil deodorizer distillate was donated by Yuanda Chemical Co.
Journal Vol. 56 (2010), p. 1659 [29] T.

Large-scale finite element analysis software is used to analyze different angle spiral installation; in order to obtain logical results, it is necessary to analyze its non-linear action, which includes non-linear caused by state change, material and geometry.
There are problems of big strain and contact in computing process, so material characteristic should be input according to actual stress strain relationship (see Fig.3).
Acknowledgements This research is supported by Guangxi Natural Science Foundation (No. 0778006-13).
(in Chinese) [6] S.P.Li, Y.M.Meng et al: Journal of Materials Processing Technology.

Some types of composite geosynthetics that have special functions are used in hydraulic filling project, and geonet composites having a drainage function have been adopted as materials to protect geomembranes[3].
However, in some projects, marble stones with diameters over 50 mm, used as drainage materials, will cause soil particle to occur in geonet composites.
Acknowledgements The writers appreciate the financial support provided by National Natural Science Foundation of China (No. 41172234).
[3] PENG Jie, SU Bo, DONG Jiang-ping, WANG Baihuan, Application of vacuum preloading method with double-layer filter pipe in non- sand-mat layer to ultra-soft seabed silt hydraulic filling, Journal of Hohai University, 2011, 39(6), 676-681 [4] Han Yong Jeo, Seong Hun Kim, Youn In Chung, Yeong Mog Park, Chin Gyo Chung, Analysis of the drainage performance of geotextile composites under confined loads, Polymer Testing 2004,23(2), 239–244