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Online since: November 2016
Authors: Kiran Rangwani, Svetlana Brzev
Seismic Analysis of Confined Masonry Shear Walls Using the Wide Column Model Kiran Rangwani1, a* and Svetlana Brzev2, b 1Graduate Student, Department of Civil Engineering, Indian Institute of Technology Gandhinagar, Palaj, GJ, 382355, India 2Visiting Professor, Department of Civil Engineering, Indian Institute of Technology Gandhinagar, Palaj, GJ, 382355, India akiran@iitgn.ac.in, bsbrzev@iitgn.ac.in Keywords: Confined Masonry, Wide Column Model, Equivalent Frame Model, Linear Elastic Analyses, Seismic analysis Abstract.
Introduction Masonry as a construction material has been accepted worldwide due to its simple construction practice, durability, and cost-effectiveness.
References [1] Brzev S. (2008), “Earthquake-Resistant Confined Masonry Construction”, NICEE, National Information Center of Earthquake Engineering, Indian Institute of Technology Kanpur [2] Meli R., Brzev S. et al (2011), “Seismic Design Guide for Low-Rise Confined Masonry Buildings”, Earthquake Engineering Research Institute (EERI), Oakland, California, USA [3] Jain S.
G. (2002), “ Evaluation of Simplified Models for Lateral Loads Analysis of Unreinforced Masonry Buildings”, Journal of Structural Engineering, ASCE, Vol. 128, No. 7, pp. 890-897 [9] Lagomarsino S., Penna A., Galasco A., and Cattari S. (2013), “TREMURI Program: An Equivalent Frame Model for the Nonlinear Seismic Analysis of Masonry Buildings”, Journal of Engineering Structures, Vol. 56, pp. 1787-1799 [10] Simões A., Bento R., Gago A., and Lopes M. (2012), “Seismic Vulnerability of Old Masonry ‘Gaioleiro’ Building in Lisbon”, Proceeding of 15thWorld Conference of Earthquake Engineering, Lisbon, Portugal [11] Taveras M.
A. (2008), “Revisión de las recomendaciones para modelar y analizar estructuras de mampostería confinada ante carga lateral”, Master's thesis, Graduate of Engineering, UNAM, Mexico [12] NTC-M (2004), “Technical Norms for Design and Construction of Masonry Structures”, Mexico D.F.
Online since: June 2007
Authors: F.A. Maunde, M.A. Ali, A. El Okene, S.A. Iya
IYA 1, d . 1 Department of Agricultural Engineering, Federal University of Technology, Yola- Nigeria 2 Department of Agricultural Engineering, Bayero University Kano - Nigeria 3 Department of Agricultural Engineering, Ahmadu Bello University, Zaria - Nigeria a fatimaud@yahoo.com, b dralimohd@yahoo.co.uk, cabdullahielokene@yahoo.com and d us5iya@yahoo.com.
Materials and Method The following factors were considered: Sample factors: Seven tiers of Samnut - 10 varieties were purchased.
Thesis Submitted to the Department of Agricultural Engineering, Ahmadu Bello University , Zaria(1997)
Engineering, Ahmadu Bello University, Zaria(2000).
Project Submitted to Department of Agricultural Engineering, Federal University of Technology , Yola. (2005)
Online since: August 2022
Authors: D. Ramesh, Rajendrachari Shashanka, Kiran Kenchappa Kiran
First Grade College, Shivamogga 577201, Karnataka, India 3Dept. of Metallurgical and Materials Engineering, Bartin University, Bartin, Turkey akiranhallikere86@gmail.com, bdrgutti1966@gmail.com, cshashankaic@gmail.com Keywords: Rhodamine B, photocatalytic, xanthene dye, nanocomposites Abstract: Pollution by textile dyes on waterbodies is an issue for both human health and the environment.
However, the use of semiconductor-assisted materials in conjunction with sustainable solar energy has emerged as a possible solution to the problem.
In: Hussain CM, Manjunatha JGBT-FN-BES (eds) Woodhead Publishing Series in Electronic and Optical Materials.
In: H P Nagaswarupa HCAM (ed) Current Trends in Materials Chemistry, I.
Sci Rep 6:1–11 [82] Pandey S, Mishra SB (2011) Sol–gel derived organic–inorganic hybrid materials: synthesis, characterizations and applications.
Online since: January 2013
Authors: Noé Cheung, Amauri Garcia, José Eduardo Spinelli
Microstructure and Mechanical Properties of Directionally Solidified Unmodified and Ni-Modified Sn-0.7wt%Cu Lead-Free Solder Alloy Noé Cheung1,a, Amauri Garcia2,b, José Eduardo Spinelli3,c 1Federal Institute of Education, Science and Technology of São Paulo – IFSP, Brazil 2Department of Materials Engineering, University of Campinas, UNICAMP, Brazil 3Department of Materials Engineering, Federal University of São Carlos – UFSCar, Brazil acheung@ifsp.edu.br, bamaurig@fem.unicamp.br, c spinelli@ufscar.br Keywords: solidification, microstructure, thermal parameters, mechanical properties, solder alloys Abstract.
Nowadays, it is particularly important to find replacements for Pb containing solder materials.
Introduction The soldering technology plays a key role in various levels of electronic packaging, such as solder joints in printed circuit boards (PCB) formed by either surface mount soldering or plated through-hole (PTH) soldering of components, flip-chip connections, attaching heat sinks, and others.
-Materials El Vol. 20 (2009), p. 1112 [3] Y.
Online since: November 2017
Authors: G. Senthil Kumaran, Tumwizere Remy Patrick, Felix Hategekimana, Niyibizi Aphrodice
Senthil Kumaran4,b 1,2,3,4Department of Civil, Environmental and Geomatics Engineering, University of Rwanda, Kigali, Rwanda aremick05@yahoo.fr, bkumarangs@yahoo.com Keywords: Landfill, Groundwater, soil, pollution, Heavy Metals, Physico-chemical parameters Abstract.
Potential sources of CO2 gas are (a) CO2 gas originating from municipal wastes within unlined landfill sites, (b) CO2 gas due to the oxidation of organic materials leaked from old latrines in the area, and (c) HCO3-from sulfate reduction of organic materials in the aquifer. [15] · CH2O+O2↔ CO2+H2O (3) · 2CH2O +SO42- ↔ H2S+2HCO3- (4) The concentration of NO3 in water sample varied from 55 to 67.5mg l-1 as shown in the Table 4.
The leachate is generally a strongly reducing liquid formed under Methanogenic conditions and on coming into contact with aquifer materials has the ability to reduce sorbet heavy metals in the aquifer matrix.
[17] Rajkumar Nagarajan, Subramani Thirumalaisamy and Elango Lakshumanan Impact of leachate on groundwater pollution due to non-engineered municipal solid waste landfill sites of erode city, Tamil Nadu, India journal of Environmental Health Sciences & Engineering (2012), 9:35
Prasada Rao Impact of Leachate on Soil Properties in the Dumpsite (A Case study of Greater Visakhapatnam) International Journal of Engineering Research and General Science Volume 4, Issue 1, January-February, 2016 ISSN 2091-2730.
Online since: March 2019
Authors: Truong Duc Phuc, Yoshino Masahiko
Experimental Conditions In the experiments, quartz glass slide was used as substrate material.
FE-SEM observation was carried out at the Center for Advanced Materials Analysis in Tokyo Institute of Technology through the AUN/SEED Net post-doctoral research fellowship.
Soc. 126 2066-72 [7] Yang L, Jose F F, and Jennifer Q L 2014 Tailoring 1D ZnO nanostructure using engineered catalyst enabled by Poly(4-vinylpyridine) J.
Yoshino, “High Throughput Method to Fabricate Ordered Nano dot array on Various Plastic Films,” Journal of Key Engineering Materials, Vol.523-524, pp. 633-638, 2012
Online since: November 2010
Authors: Cheng Yang, Ao Xiao, Chao Ruan, Hong Zhang, Ding Feng
Module Partition Research for the Marine Drilling Rig Ding Feng, Cheng Yang, Ao Xiao, Chao Ruan, Hong Zhang (School of Mechanical Engineering, Yangtze University, Jingzhou, China 434023) fengd@yangtzeu.edu.cn, fengd0861@yahoo.com Key words: module, module partition, marine drilling rig, modular division scheme Abstract.
Introduction The modular design for the mechanical equipment has gradually been emphasized by national engineers and technicians, and the modular design is an important development trend of drilling rig especially for the marine work-over rig.
Overall layout is shown in figure 2. 1) Drilling rig equipment module Drilling rig equipment module contains: derrick, substructure, winch, rotary table, pipe setback, mud pump, manifold of riser, manifold of throttle, driller's house, head well tolls, bell mouth, vibrating screen, vacuum doffing gas capsule, centrifuge, blowout preventer stacks, sand settling tank, degassing tank, silt removal tank, suction tank, measuring tank, centrifugal pump, metering pump, cuttings collecting tank,gasholder and so on . 2) The support module of work over rig It mainly contains pipe support, catwalks, pneumatic winch of catwalks, buffer, bulk material mixed funnel, storage area of bulk material, mixing pump, shear pump, air compressor prying, mud storage tank, mixed tank of mud, chemical injection tank and so on [3].
Drilling rig equipment module The support module of drilling rig Storage module of bulk material Power module The important module of drilling rig Fig. 2 Modular shorts overall layout diagram 3)Power module It mainly includes generator, fuel oil tank, slip oil tank, house on duty, extinguishing pry and so on.
From the understand of interaction, these sub-functions work at the same energy flow, material flow, signal flow or the supplies correlation between the larger, therefore, assemble together constitute a function module. 2).
Online since: June 2021
Authors: Qing Zhong Xue, Ya Xiong, Xiao Chang
0D Zn-ZIF/2D Co-ZIF Derived 0D ZnO/2D Co3O4 Heterostructures for ppb-Level Acetone Detection Xiao Chang1,a, Ya Xiong1,b and Qingzhong Xue1,c* 1State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, P.
Table 1 Acetone sensing properties of different sensing materials.
Materials T (°C) Concentration (ppm) Response Reference Co3O4 hollow nanospheres - 1000 8 [26] Co3O4 nanocubes 200 100 3 [27] Co3O4/ZnO 400 1000 20 [28] porous Co3O4 nanosheets 150 100 6 [29] Co3O4 Hollow nanocages 350 5 1.45 [13] 0D ZnO/2D Co3O4 250 5 4.7 This work 0D ZnO/2D Co3O4 250 100 16.8 This work Compared with pure 2D Co3O4, 0D ZnO/2D Co3O4 exhibits more excellent acetone sensing properties, which can be attributed to the formation of 0D ZnO/2D Co3O4 heterostructures.
Therefore, 0D Zn-ZIF/2D Co-ZIF derived 0D ZnO/2D Co3O4 heterostructures can be a promising acetone sensing material.
Zhang, Metal-organic frameworks-derived hierarchical Co3O4 structures as efficient sensing materials for acetone detection, ACS Appl.
Online since: May 2011
Authors: Lei Zhang, Ji Li, Kai Yang, Chen Fa Hu, Shi Bin Ge, Chun Hui Yang
Effects of CuCl Source and Content on Direct Synthesis of Triethoxysilane from Silicon and Ethanol Zhang Lei; Li Ji; Yang Kai; Hu Chenfa; Ge Shibin; Yang Chunhui* School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, People’s Republic of China E-mail: yangchh@hit.edu.cn Tel: 086-045186413707 Fax: 086-045186314858 Keywords: Direct Synthesis; Triethoxysilane; Effects of CuCl sources; Effect of CuCl concentration; Gas-solid Stirred Fluidized Bed Abstract: Effect of CuCl source and content on formation of triethoxysilane in the direct process is described and discussed.
The direct process is a key step in the synthesis of silicon-containing materials, such as silicone polymer and numerous organosilicon chemicals.
Experimental 2.1 Materials and methods Technical-grade silicon, Sitech (Anyang DX Silicon Industry Co., Ltd.), was used and its impurities were listed in Table 1.
Other materials were used in the reaction including ethanol (Sinopharm Chemical Reagent Co., Ltd, 99.8%) and two sources of CuCl ( one was prepared by wet process, as described in Ref [21], and the other was from Sinopharm Chemical Reagent Co., Ltd, 99 %).
The η-Cu3Si acted only as potential active material.
Online since: May 2010
Authors: Olaf Dambon, Kyriakos Georgiadis, Fritz Klocke
The preferred coating method for depositing such coatings is sputter PVD due to the very smooth surface of the coatings, the low coating defect density and the flexibility in the coating material selection.
The substrate used in the present work is the CTN01L type cemented tungsten carbide made by Ceratizit Luxembourg, which was developed specifically as a precision glass molding tool material.
Such a change in weight occurs when the material of the samples oxidizes, as oxygen from the atmosphere gets incorporated into the material.
Since hot glass tends to oxidize materials that come in contact creating strong bonds, good resistance to oxidation at high temperatures is important for prolonging tool lifetime.
Hwang: Design of Protective Coatings for Glass Lens Molding, in: Key Engineering Materials 364-366 (2008) p. 655-661 [6] C.
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