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Igbafe2,b 1,2Air Pollution Climatology and Energy Research, Department of Chemical Engineering, University of Benin, Benin City, Nigeria bigbafe_a_i@yahoo.com Keywords: Mixed layer depth, Solar and flare stack radiations, Atmospheric boundary layer Abstract: Mixing of chemical species released from pollution sources occurs at certain heights in the atmospheric boundary layer of the troposphere.
Within this height, mixing of materials occurs due to convective heat transport and mechanical (wind) actions.
Inversion below, Lapse aloft condition (looping) Atmospheric stability is a key factor of plume behaviour and dispersion characteristics.

Revell, A massively parallel multiscale CAFE framework for the modelling of fracture in heterogeneous materials under dynamic loading, Advances in Engineering Software (2019) 1-14
Zhang, CAFE based multi-scale modelling of ductile-to-brittle transition of steel with a temperature dependent effective surface energy, Materials Science & Engineering A. 755 (2019) 220-230
Ruiz Mendoza, Cleavage micromechanisms study in a ship plate steel through four-point double-notch bend and Charpy tests, Key Engineering Materials 944 (2022) 13-37
Zhanga, CAFE based multi-scale modelling of ductile-to-brittle transition of steel with a temperature dependent effective surface energy, Materials Science & Engineering A. 755 (2019) 220–230
Revell, A massively parallel multiscale CAFE framework for the modelling of fracture in heterogeneous materials under dynamic loading, Advances in Engineering Software 139 (2020) 102737

Alexandria Engineering Journal, 52, 259–265 (2013) [5] Pramanik, S.
Ain Shams Engineering Journal, 5, 205–212 (2014) [6] Hayat, T., Imtiaz, M., Alsaedi, A., and Mansoor, R.
Procedia Engineering, 127, 440–446 (2015) [9] Khan, J.
Nonlinear Engineering. 4, 191–201 (2015)
International Journal of Engineering Science, 42(7), 699–713 (2004) [28] Pal, D. and Hiremath, P.

According to the reference [6] ~ [8], using discontinues coulomb friction model, the motion equation of the sliding structure under collision is carried out: When the isolated structure in slipping state (1) When the isolated structure is in collision state (2) Properties of the Materials of Sliding and Energy-Absorbed Element of Sliding Isolation System Plastic Analysis of Sliding-Limit and Energy-Absorbed Element.
Shear[kN] The horizontal stiffness of the U [kN/m] Fig. 2 The base shear change with the horizontal stiffness of the U Fig. 3 The layout of the structure (U is the U shape steel plate) Instance Analysis of Sliding Base isolation Frame Structure Engineering Situation.
Displacement [m] Time [s] Displacement [m] Floor Fig. 4 The comparison of the maximum displacement before and after collision Fig. 5 The base displacement response curve of engineering under the bi-directional Elcentro waves The Displacement Response before and after the Collision under Unidirectional Earthquake Responses.
Fig. 5 is the base displacement response curve of engineering structures under the bi-directional Elcentro waves, Figure 5 shows that under different conditions of the bi-directional horizontal seismic waves, the maximum base displacement were 0.212m, 0.215m, 0.212m and 0.204m.
Yao: China Civil Engineering Journal,Vol. 28 (1995), P.21 [4] Z.M.

Gearbox Fault Detection Using Hilbert and TT-transform Xianfeng Fan 1 and Ming J Zuo 2 1 Department of Mechanical Engineering, University of Alberta, Edmonton, T6G 2G8, Canada, xianfeng@ualberta.ca 2 Department of Mechanical Engineering, University of Alberta, Edmonton, T6G 2G8, Canada, ming.zuo@ualberta.ca Keywords: gearbox, fault detection, TT-transform, Hilbert transform Abstract.
Acknowledgements The project is supported by the Natural Sciences and Engineering Research Council of Canada (NSERC).
Lee: Key Engineering Materials.

Crack Control in Reinforced Concrete Liquid Retaining Structures Jaroslav Navrátil 1,2, a *, Radim Cajka 2, b 1 IDEA RS Ltd, U Vodárny 2a, 616 00 Brno, Czech Republic 2 Department of Structures, Faculty of Civil Engineering, VSB - Technical University Ostrava, Ludvika Podeste 1875/17, 708 33 Ostrava – Poruba, Czech Republic a navratil@idea-rs.com, b radim.cajka@vsb.cz Keywords: Liquid retaining structures, Reinforced concrete, Cracks, Eurocode, Software.
Key Engineering Materials, Vols. 627, (2015), pp 441-444, Trans Tech Publications, Switzerland, doi:10.4028/www.scientific.net/KEM.627.441
Optimization of fibre reinforced concrete structural members, Procedia Engineering, 65, pp. 100-106, DOI: 10.1016/j.proeng.2013.09.018, 2013
VŠB – Technical university of Ostrava, Faculty of Civil Engineering. 2014.

., Ltd, Changzhou, 213125, China 3Southwest Oil and Gas Field of China National Petroleum Corporation, Chengdu, 610017, China 4Design Department of China Offshore Oil Engineering Co., Ltd.
About the author: Corresponding author: Jialin Tian: Assistant Professor of the Department of Mechanical Engineering at Southwest Petroleum University.
Journal of Petroleum Science and Engineering, Vol.39 (2003), p. 99-116
Energy absorption of structures and materials, Chemical Industry Press.
Research on the Distribution Law of Hydrocyclone Radial Velocity, The 2nd International Conference on Mechanic Automation and Control Engineering (MACE 2011), July 15th -17th, 2011, Inner Mongolia, China.

Knowledge Representation for �TRKB Based on Ontology To construct a network teaching resource knowledge base, the key process is to define all classes and their relationships, attributes and their relationships, the restrictions of attributes, and so on.
According to national Modern Distance Education Resources Construction Specifications, network teaching resources are supposed to include: media material, teaching material resource, item bank, paper material, software and network software, network course and subject website, scientific research resource, software resource, literature resource, Q and A, case and resource catalogue index, and so on.
The network teaching resource serves education directly, which is not only an accumulation of teaching materials and data, but also include other non-service behavior devoicing from teaching specialty.
Taken the network teaching resource knowledge base as an example, it refers to the notion of teaching course, software resource, literature material, Q and A and other resources.
Xu: Computer Engineering and Design, Vol. 28 (2007), pp.3277-3279

Structural and Magnetic Properties of Cr- and Fe-doped CeO2 Nanoparticles Prepared by Sol-gel Method Shenghong Yang* and Yueli Zhang State Key Laboratory of Optoelectronic Materials and Technologies // School of Physics & Engineering, Sun Yat-sen University, Guangzhou 510275 China *stsyshh@mail.sysu.edu.cn Keywords: Cr- and Fe-doped CeO2, Sol-gel method, Magnetic property.
However, there is heated debate regarding the ferromagnetism of this material.
Cerium oxide (CeO2) is another promising material for DMS systems due to its electronic configuration, because cerium oxide can support deviations in-stoichiometry (CeO2-δ com 0 <δ< 0.5) while still maintaining afluorite-type structure [2].
Next, the xerogel was calcined at 800 °C for 2 h to eliminate organic materials and form a powder.

Lefferts1,e 1 Catalytic Processes and Materials, 2Mesoscale Chemical Systems University of Twente, Enschede, The Netherlands a D.B.Thakur@utwente.nl, b R.M.Tiggelaar@utwente.nl, cK.Seshan@utwente.nl, d J.G.E.Gardeniers@utwente.nl, e L.Lefferts@utwente.nl Keywords: Carbon nanofibers, catalyst support, flat substrates, nickel thin film, underlayers.
After the pioneering work by Iijima in 1991 [7], recent developments in the field of carbon nanostructured materials, such as Carbon Nanofibers (CNF) and Nanotubes (CNT), have generated tremendous interest particularly towards their application as catalyst supports.
This will involve investigation of two key challenges: firstly, obtaining good attachment of CNF to the microchannel walls and, secondly, controlled growth of CNF inside microchannels.
The purity of Ni target material was 99.99%, and at least 99.95% for adhesion metals.
Schuurman and A.C. van Veen: Chemical Engineering Science Vol. 62 (18-20) (2007), p. 5084 [7] S.