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Online since: February 2018
Authors: Raffaele Landolfo
An unlimited range of materials can be used as finishing of both the inner and the outer surfaces: paint, wallpaper, coating, fabric, etc.
If adequate materials are selected, lightweight steel drywall systems can be effectively and safely used for the envelope of the building.
The experimental activity on materials, products and components involved tension tests on steel materials, shear tests on screws, shear tests on screwed connections between gusset plates and strap-bracings (Fig. 6a) and tension tests on hold-down devices, for a total number of 25 tests [136].
The ancillary experimental activity included tests on steel materials, screws, panels and steel-to-panel connections, for a total number of 144 specimens.
Peterman, et al., Seismic Response and Engineering of Cold-formed Steel Framed Buildings, Structures. 8 (2016) 197–212. doi:10.1016/j.istruc.2016.05.009
Online since: June 2014
Authors: Xiang Qi Chang, Wen Qi Lin, Na Yan, Ting Yu
Cooling extent of Green parks: A case study in Beijing Wenqi Lin1, a, Xiangqi Chang2,b , Na Yan3,c and Ting Yu 3,d 1 Key Laboratory of Eco Planning & Green Building, Ministry of Education (Tsinghua University), China / School of Architecture, Tsinghua University, Beijing, 100084, China 2 School of Landscape Architecture, Beijing Forestry University, Beijing, 100084, China 3 Beijing Tsinghua Tongheng Urban Planning & Design Institute, Haidian District, Beijing, 100085, China a linwq@tsinghua.edu.cn, b13911587258@163.com, c435449364@qq.com, dtintyu@gmail.com Keywords: Effect assessment, Cooling extent, Green Area, Beijing Abstract.
Material and Method Study Area.
It suggests that vegetation is a key factor in cooling the city because of its evapotranspiration and shading[30~32].
MITIGATION OF URBAN HEAT ISLANDS - MATERIALS, UTILITY PROGRAMS, UPDATES.
Landscape and Ecological Engineering 5, 183-191
Online since: August 2012
Authors: Zhi Yao Su, Xian Dong Ke, Xu Dong Ma, Chun Zhu, Yong Mei Xiong
Indicator Species Analysis of Forest Communities Along a Disturbance Gradient in Guangzhou, China Chun Zhu1, a, Yongmei Xiong1, Xudong Ma2, Xiandong Ke2, Zhiyao Su2 1Guangzhou Institute of Landscape Gardening Guangzhou 510405, Guangdong Province, China 2College of Forestry South China Agricultural University Guangzhou 510642, Guangdong Province, China azhuchun97@163.com Key words:disturbance gradient; forest community; MRPP; indicator species analysis Abstract.
Material and Methods A.
Acknowledgment This study is supported by Grants from Science and Information Technology of Guangzhou (Grant No. 2009Z1-E571) and Key Research Programs of Guangdong Province (Grant No. 2008B021500004).
[8] Mallik A U, Lamb E G, Rasid H.Vegetation zonation among the microhabitats in a lacustrine environment: analysis and application of belowground species trait patterns.Ecological Engineering, 2001, 18(2): 135-146
Online since: September 2016
Authors: Mohammad Hossein Ghazanfari, Khalil Shahbazi, Ghasem Zargar, Mostafa Sedaghatzadeh
Zargar1,d 1 Ahwaz Faculty of Petroleum, Petroleum University of Technology, Ahwaz, Iran 2 Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran am.sedaghatzadeh@put.ac.ir, bshahbazi@put.ac.ir, cghazanfari@sharif.edu, dzargar@put.ac.ir Keywords: Geometry, Drilling fluid, Formation damage, Dynamic filtration, Mud cake Abstract.
Experimentally and theoretically have been proven that the relationship between particles and pore throat sizes are the key factors to the particles migration and plugging [11].
Abrams, [15] proposed that the amount of the particle size of the bridging materials should be at least equal to or greater than one-third of the pore size of the reservoir rock.
The laws that govern nanoscale material behavior are drastically different than the laws governing the macro/micro scale behavior [20].
L., Flow of clay suspensions through porous media, SPE Reservoir Engineering, Vol. 4, pp. 213-220, (1989) [22] Leontaritis, K.J., Asphaltene near wellbore formation damage modeling, Journal of Energy Resources Technology, Vol. 127, pp. 191-200, (2005) [23] Atkinson, G. and Mecik, M., The chemistry of scale prediction, Journal of Petroleum Science and Engineering, Vol. 17, pp. 113-121, (1997) [24] Sumer, M.P. and Serife, S.H., 2008, Solid-liquid two phase flow, First edition, Elsevier, Chapter 2, p. 31, (2008) [25] B.B.
Online since: June 2014
Authors: Wei Qing Meng, Zhong Liang Wang, Bei Bei Hu
Materials and methods Study area The city of Tianjin(39ºN, 117ºE)is one of the four municipalities directly under the central government.
Ecological Engineering Vol. 26(2006), p 27-39 [4] William J.
Ecological Engineering Vol.15(2000), p 267-282 [5] Eddo Coiacetto.
Ecological Engineering Vol. 35(2009), p 1090-1103 [7] Qian Liu, Hui-ming Li, Xiao-li Zuo, Fei-fei Zhang, Lei Wang.
Water environment protection with rapid economy development in Tianjin of China. 2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010 [10] Tianjin Statistics Bureau.
Online since: August 2019
Authors: Chiranjib Bhattacharjee, Ankita Mazumder, Dwaipayan Sen
Mass Transport through Composite Asymmetric Membranes Ankita Mazumder1,a, Dwaipayan Sen2,b and Chiranjib Bhattacharjee1,c* 1Department of Chemical Engineering, Jadavpur University, Kolkata, India 2Department of Chemical Engineering, Heritage Institute of Technology, Kolkata, India achemical.ankita91@gmail.com, bdwaipayanju@gmail.com, cc.bhatta@gmail.com Keywords: Composite membrane, Interfacial polymerization, Solution-diffusion model, Knudsen diffusivity, Non-equilibrium thermodynamics.
TFC membranes contain minimum two layers of different (polymeric) materials, where a dense ultrathin layer of a highly selective membrane material is deposited on a porous support sublayer (as shown in Fig. 6) [36].
This is due to the inherent interaction between membrane material and the materials we want to resolve.
Giorno, Comprehensive membrane science and engineering, Newnes, 2010
Nunes, Materials and membrane technologies for water and energy sustainability, Sustainable Materials and Technologies 7 (2016) 1-28
Online since: December 2018
Authors: Marek Niewczas, Shigeo Saimoto, Michael R. Langille
Langille1b and Marek Niewczas2c 1Mechanical and Materials Engineering, Queen’s University, Nicol Hall, 60 Union Street, Kingston, ON Canada, K7L3N6 2Materials Science and Engineering, McMaster University, 1280 Main Street West, Hamilton, ON Canada, L8S4M1 ashigeo.saimoto@queensu.ca, b9mrl2@queensu.ca, cniewczas@mcmaster.ca Keywords: forensic analyses, constitutive relation, work-hardening, alpha-factor.
This seemingly universal applicability confirmed that CRA is independent of the evolving internal stress which acts as a homogenization parameter to maintain the activation work at each and every activation site constant such that the measurable product of the mean values are also constant, that is, τν = kT/m wherein ν is the activation volume and m, the engineering strain rate sensitivity factor.
Mean Slip Distance, Functional Constitutive Relation and Derivation of α-Factor The key parameter to decode the σ - ε diagram are the mean slip distance λ, which can be precisely determined for each curve and the functional constitutive form [8, 13, 14]: λ=ϕbμ2τ∂τ∂γ|T,γ (1) τ=P4A2+βαμb21C1b12+βγ12+β (2) The calibration factor in Eq. 1 is derived from θcal = ∂τ/∂γ at ε0.2% given as 1/= (µ/θcal)/ 2α.
Acknowledgements The authors are most grateful to Natural Sciences and Engineering Council of Canada for the many years of support for our studies of crystal plasticity.
Online since: August 2005
Authors: K. Takashima, T. Nakayama, M. Ota, H. Watanabe
Sakai: Technical Paper of 4th International Machining & Grinding Conference, Society of Manufacturing Engineers, MR01-224 (2001)
Ota: Advances in Abrasive Technology Ⅵ, Key Engineering Materials Volume 257-258 (Trans Tech Publications, Switzerland 2003), pp. 273 - 278
Takashima: Proc. of the International Conference on Leading Edge Manufacturing in 21st Century, Japan Society of Mechanical Engineers, (2003), pp. 285 - 290
[6] Grinding Engineering, (Society of Precision Engineering, Ohmsha, Japan 1987)
Online since: October 2010
Authors: Jian Hua Du, Hong Shuang Li, Cui Feng Du
Experiment Study on Formula and Field of the Dust Suppressant for the Open Mine Road Cuifeng Du 1, a, Jianhua Du 2,b and Hongshuang Li 3,c 1 School of Civil and Environment Engineering , University of Science and Technology Beijing, Beijing 100083, P.R.CHINA 2 School of Civil and Environment Engineering , University of Science and Technology Beijing, Beijing 100083, P.R.CHINA 3 School of Civil and Environment Engineering , University of Science and Technology Beijing, Beijing 100083, P.R.CHINA a ducuifeng@126.com, bmagicdna@126.com,cli_hongshuang@126.com Keywords: dust suppressant; open mine road ; road dust raising; moisture content of dust sample Abstract.
The more the water among dust particles is ,the larger the strength of interaction among dust particles is, the more difficulty the dust raising is , so the moisture content of dust is a key factor influencing dust raising.
(2)Cohesive action The polar groups of coagulating agent can adsorb many materials, when macro molecular exists among dust the dust particles, each molecule can adsorb several dust particles respectively, the incompact dust particles combine with each other tightly because of "bridging function" and form a big dust particle.
Mining Engineering. 1991, 43(3): 338 [9] Muleski Gregory.
Online since: December 2010
Authors: Zhen Yu Wang, Dai Yu Wang, Da Gang Lu
Behavior of Large-Scale Circular and Square RC Columns Confined with Carbon Fiber-Reinforced Polymer under Uniaxial Compression Zhenyu Wang1, a, Daiyu Wang1, b, Dagang Lu1, c 1School of Civil Engineering, Harbin Institute of Technology, Harbin, China azhenyuwang@hit.edu.cn, bdaiyuwang@hit.edu.cn, cludagang@hit.edu.cn Keywords: CFRP; Confined concrete; Circular columns; Square columns; Uniaxial compression; Stress-strain behavior Abstract: Most experimental studies concerning the stress-strain behavior of concrete columns confined with carbon fiber-reinforced polymer (CFRP) focused on plain concrete columns with small section.
Introduction FRP confinement is a key technique to increase the seismic capacity of RC columns, which are critical structural members that withstand vertical compression and lateral seismic loading [1].
The accurate stress-strain model for FRP-confined concrete is the foundation to use this technical in actual engineering projects.
The properties of steel and CFRP materials are given in Table 2.
Fig. 1 Dimension and reinforcement details of specimens Table 2 Mechanical properties of steel and CFRP Material Diameter/Thickness [mm] Yield/Peak strength [Mpa] Ultimate strength [Mpa] Elastic modulus [Mpa] Longitudinal bars ds =10 fy =312 fsu =484 Es=2.0×105 ds =12 fy =340 fsu =520 Es =2.0×105 Hoops ds =6 fy =397 fsu =623 Es =2.0×105 CFRP tf =0.167 - ff =4340 Ef =2.4×105 Instrumentation and Test Setup.
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