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Online since: June 2011
Authors: Fei Xie, Yun Shan Wang, Wei Wang, Wen Gang Wu, Zhi Hong Li, Gilad Yossifon, Hsueh Chia Chang
An experimental study on the side-opening filling process at the interface between microchannels with different widths Fei Xie1, Yunshan Wang2, Wei Wang1, 3*, Wengang Wu1, 3, Zhihong Li1, 3, Gilad Yossifon4 and Hsueh-Chia Chang2 1Institute of Microelectronics, Peking University, Beijing 100871, China 2Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame 46556, USA 3National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Beijing 100871, China 4Mechanical Engineering, Technion – Israel Institute of Technology, Technion City 32000, Israel.
The easiest way to fabricate micro/nanochannel is depositing material onto a predefined microchannel until nanometer-sized pattern is obtained.
Chemical vapor deposition(CVD)[1] of dielectric material inside a microchannel has been used for years to isolate electrical components[2], shrink and seal channels[3, 4].
C Chang: Journal of Nanoscience and Nanotechnology, 2010, p. 7277-7281
Online since: August 2010
Authors: Cheng Hai Xu, Zhi Jun Zhang, Shi Wei Zhang
The porous medium zone was adopted to the material zone.
The gas flow in vacuum dryer has the very important contribution on humidity and quality of grain material after drying.
The water vapor evaporating rate from the material is constant.
The material flowing from up to bottom is very allowing, and it was not affected the gas flowing.
Numerical simulation and experimental study of flow field in axial flow fixed bed, Journal of Chemical Industry and Engineering, 2005,56(4):632-636 [5] D.
Online since: June 2018
Authors: Abdelkader Mestar, Samir Zahaf, Noureddine Zina, Ahmed Boutaous
Table 1 Properties of different biocompatible materials widely used for prosthesis
Materials used as biomaterials incorporate polymers, metals, ceramics and composites.
[10] Tissakht M, Ahmed AM, Tensile stress-strain characteristics of the human meniscal material, Journal of Biomechanics, 4 (1995) 411-22
[15] Wang GZ, Xuan FZ, Effects of triaxial stress on martensite transformation, stress-strain and failure behavior in front of crack tips in shape memory alloy NiTi, Materials Science and Engineering A, 527(6) (2010) 1529-36
[20] American Society for Testing and Materials, 1992, F75-87, 42, F90-87, 47; F562-84,150
Online since: October 2010
Authors: Sheng Ai Cui, Yue Zhong Ye, Fei Fu, Zhi Feng Liu
Raw Materials and Test Method.
Raw materials of concrete include: (1) cement: ordinary Portland cement P.O42.5R, density 2912g/m3; (2) fly ash: I high-quality fly ash, density 2059kg/m3; (3) slag powder: S95 mineral powder, density 2900kg/m3;(4) sand: river sand, Ⅱ area medium sand, fineness modulus 2.77, apparent density 2632kg/m3, bulk density 1630kg/m3 , mud content 1.6%; (5) coarse aggregate: 5~20mm diameter stone, apparent density 2719kg/m3, elongated and flaky particles content 2.83%, mud content 0.54%; (6) water: tap water, PH value 8.73; (7) water reducer: JX-GBNH1/1 type high range polycarboxylate water reducer, water reducing ration 25%~30%; (8)liquid preservative: high performance anti-corrosion and cleft agent ( pumping liquid type) JX-GWY, mixing amount 1.5%; (9) solid preservative: high performance anti-corrosion and cleft agent ( pumping type) JX-GW2, mixing amount 3.5%.
Table 3 Mix proportion of single mineral and preservative double-doped concrete Concrete types Raw Material Dosage(kg/m3) Cement Fly ash Slag Powder Sand Stone Water Preservative 35FA+LA 285 95 0 788 1087 152 5.7 35SP+LA 304 0 76 788 1087 152 5.7 35FA+SA 285 95 0 788 1087 152 13.3 35SP+SA 304 0 76 788 1087 152 13.3 According to Fig.2 chloride ion permeability of C35 single mineral and preservative double-doped concretes is assessed.
References [1] Nobuaki Otsuki, Shin-ichi Miyazato, Nathaniel B, Diola and hirotaka Suzuki: ACI Materials Journal Vol. 97 (2000), p. 454 [2] Ye Jianxiong, Li Xiaozheng, Liao Jiaqing: Journal of Chongqing Jianzhu University Vol. 27(2005), p. 89.
(In Chinese) [4] The People’s Republic of China Ministry of Railways Science & Technology Department: Technology-based [2005] No.101 Temporary Technical Requirements of High Performance of High Performance Concrete of Passenger Dedicated Line.(2005) .
Online since: December 2013
Authors: Petr Máca, Petr Konvalinka, Manfred Curbach
New hi-tech materials such as ultra high performance fibre reinforced concrete (UHPFRC) are ideal for applications where high compressive and tensile strength, small thickness and high energy absorption capacity are required.
Moreover, these materials exhibit strain hardening under tension [4, 5] and high energy absorption capacity [6, 7].
The authors gratefully acknowledge the support provided by the Czech Science Foundation under the project No.
Massicotte, Ultra-high performance fibre reinforced concrete mix design in central Canada, Canadian Journal of Civil Engineering, 35 (2008) 217-224
Curbach, Concrete Under High Strain Rates: Local Material and Global Structure Response to Impact Loading, International Journal of Protective Structures, 2 (2011) 283-294.  
Online since: August 2010
Authors: Jin Jun Guo, Wei Wang
Methods for Crack Prevention of Large Volume Concrete Foundation of High-rise Building Guo Jinjun1,a and WANG Wei2,b∗ 1 Department of Civil Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China 2 Department of Civil Engineering, Shaoxing University, Shaoxing 312000, China a gjjcivil@yahoo.cn, bwellsking.wang@gmail.com Keywords: crack prevention; concrete foundation; high-rise building; control methods Abstract.
The designs of concrete materials and mixture ratio are crucial, and choosing primary materials rationally is the key of active control.
For various reasons, the present foundation thickness is designed very conservatively; this is a waste of material and increases the difficulty to control the crack at the same time.
Arnon: ACI Materials Journal, Vol. 106(2009), p.537 [2] M.
Adil and B.Peter: ACI Materials Journal, Vol. 100(2003), p.492 [9] L.
Online since: May 2011
Authors: Jin Xi Zhang, Lei Yu, Rong Jun Yang, Jing Song Tian
Research significance Using iron ore tailings as a partial fine aggregate can decrease energy and raw materials consumption.
Materials.
Acknowledgments This work was financially supported by the Research Project of Science and Technology Program of Beijing Government (D08040300200801) and the Open Fund of Key Laboratory of Transportation Engineering of Beijing, Beijing University of Technology.
References [1] Shuhui Zhang, Xiangxin Xue, Zaifeng Jin: Journal of Materials and Metallurgy.
[2] Jiwei Cai; Shaobo Zhang; Guixiang Hou: Journal of Wuhan University of Technology.
Online since: May 2014
Authors: António Castanhola Batista, Serafino Caruso, Domenico Umbrello, J.C. Outeiro
Batista3, d 1 Department of Mechanical, Energy and Management Engineering, University of Calabria, Rende CS 87036, Italy. 2 LaBoMaP, Arts et Metiers ParisTech, 71250 Cluny, France 3 X-Ray Diffraction Center for Materials Research, University of Coimbra, 3030-380 Coimbra, Portugal aserafino.caruso@unical.it, bjose.outeiro@ensam.eu, cd.umbrello@unical.it, dcastanhola@fis.uc.pt Keywords: Hard Turning, Cryogenic cooling, White layer, AISI 52100 Abstract.
Further corrections to the residual stress data were made due to the volume of material removed.
Astakhov, “Machining residual stresses in AISI 316L steel and their correlation with the cutting parameters”, Machining Science and Technology, 2002, 6/2: pp. 251-270
Yang, “Formation of white layers in steels by machining and their characteristics”, metallurgical and materials transactions, 2002, 33: pp. 1245-1254
Umbrello, “Influence of material microstructure changes on surface integrityt in hard machining of AISI 52100 steel”, International Journal of Advanced Manufacturing Technology 54 (9): pp. 887-898
Online since: March 2022
Authors: Siti Nurkhamidah, Tri Widjaja, Jayyid Zuhdan, Aisyah Alifatul, Nuniek Hendrianie, Hikmatun Ni'mah
Materials and Methods Materials Fe(Cl)3, Al(Cl)3.6H2O, Cu(Cl)2, SDS, chloroform, methanol, and L-lactic acid (88-92%) were purchased from Merck, Germany.
Other materials required was purchased locally.
Peng, Recent progress of preparation of branched poly(lactic acid) and its application in the modification of polylactic acid materials.
International Journal of Biological Macromolecules. 193 (2021) 874–892
Progress in Polymer Science (Oxford). 34 (2009) 99–124
Online since: February 2018
Authors: Vizma Nikolajeva, Lauma Buša, Valda Valkovska, Agnese Osīte
Materials and Methods Synthesis of HAp Materials.
Analytical grade chemicals were used for the synthesis of HAp materials.
All sample measurements were adjusted to the international reference materials IAEA-601 and IAEA-602.
The crystallinity of the processed materials increased by rising Sr content in HAp.
White, Method-dependent variations in stable isotope results for structural carbonate in bone bioapatite, Journal of Archaeological Science 36 (2009) 110-121