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Online since: October 2011
Authors: Cheng Hua Wang, Jian Guo An
Material Constitutive Models and Parameters.
The material of piles and pile cap is reinforced concrete which obeys a linear elastic constitutive model and the dimensions and the material parameters for piles and pile cap are listed in Table 3 and Table 4, respectively.
Acknowledgement The financial support of this work by the National Natural Science Foundation of China (Contract No. 50978182) is gratefully acknowledged.
Pile behavior—consequences of geological and construction imperfections[J], Journal of Geotechnical and Geoenvironmental Engineering, 2005,131(5):538–563 [3] S.
Three dimensional finite element analyses of the behavior of pile foundation with defective piles under vertical loadings[J], Sichuan Building Science, 2007, 33(6): 90-93.
Online since: April 2004
Authors: W. Yang, Gang Feng Guo
(8) On the other hand, the fields at a material point may experience strong discontinuity by the sudden appearance of the disturbance caused by the traveling crack.
Science, 284, 1337-1340. 5.
Journal Applied Mechanics, 68, 169-175. 7.
Simulating materials failure by using up to one billion atoms and the world's fastest computer: Brittle fracture.
National Academy of Sciences USA 99, 5777-5782 9.
Online since: October 2011
Authors: Xiang Yang Jiang, Shi Long Yan, Wei Liu
An Experimental Research and Analysis of the Law of Explosive Stress Wave Propagation of Cylindrical Charge Xiangyang Jiang1,a,Shilong Yan1,b ,Wei Liu1,c 1 Anhui University of Science and Technology, Huainan 232001 Anhui China a jxy0907@live.cn, bslyan@aust.edu.cn, cwliu@aust.edu.cn Key words: cylindrical charge, explosion mechanics, explosive stress wave.
The material of rock owns the performances of nonuniformity, nonelasticity and anisotropy, which cause it a complex physical and mechanical process.
Those are obtained through testing of material testing machine and CTS-25 nonmetal supersonic test meter.
(1. strain brick; 2.blockage; 3.cylindrical charge; 4.cement mortar specimen; 5.SDY2107A super dynamic strain instrument; 6.TST3406C dynamic test analyzer; 7.computer) Fig.2 Schematic diagram of blasting strain wave measuring device (Unit mm) The embedded strain brick’s material and ratio is the same as that of concrete specimen so that their wave impedances are the same.
Chinese Journal of Rock Mechanics and Engineering,2009,28(10):1945~1968
Online since: September 2014
Authors: Yu Hua Jiang
In view of the characteristics of online learning, when organize students learn materials, select5 kinds of media way of text, images, animation, audio and video.
System helps to analyze the cause, and tips to use video, animation, etc. in learning, adopts more visual media forms in order to make the organization of the teaching materials given priority in visual form.
Chinese web page classification based on the combination of vector machine (SVM) and unsupervised clustering [J] Computer Journal, 2001 (1) : 62-68 [2] Yang Hui, Wang Lu, Feng Hong.
Computer Science, 2008, 35 (5) : 292-297 [5] M.
Online since: July 2014
Authors: Xin Xin Meng, Shu Lin Yang
Chemical Engineering School of Nanjing University of Science and Technology, Nanjing Jiangsu 210094 2.
For example, the sensitive housefly raised in the laboratory can be used as the measuring material, the poisoning degree after contacting the measured samples is used to represent pesticide residues of the samples, the inhibited degree of pathogen growth is used to detect pesticide residue, and the inhibited degree of corn or other indicative plants is used to detect the sulfonylurea herbicide residue in soil.
But the carrier gas of gas chromatography has no influence on distribution, which means that in liquid chromatography, there are two phases which have selective interaction with samples. ② Liquid chromatography has many types of packing materials with unique efficiency, which makes the selection of stationary phase greater and increases the possibility of separation. ③ Liquid chromatography uses low separation temperature, the interaction between molecules is more effective in low temperature, so reducing the temperature can improve the efficiency of chromatographic separation
In many situations, liquid chromatography can be used as an analysis method and a separation method to purify and prepare single material with medium purification.
[4] Teng Jun, Dispersive liquid-liquid microextraction- gas chromatography determining organophosphorus pesticide of gastric content [J], Chinese Journal of Industrial Medicine, 2009,05:385-386+394.
Online since: February 2012
Authors: Luc Chevalier, Eric Monteiro, Yun Mei Luo
Introduction The injection stretch blow moulding (ISBM) process which is managed at a temperature near or slightly above the glass transition temperature Tg involves multiaxial large strains at high strain rate of the polyethylene terephthalate material (PET).
Identification of the Material’s Properties One can first identify the initial shear modulus G0 from the initial slope of the global experimental strain-stress curves which were carried out by Menary et al. [3].
International Journal of Non-linear Mechanics, 44, 389-395, (2009)
[2] Luo Y.M., Chevalier L., Monteiro E., Identification of a Visco-Elastic Model for PET Near Tg Based on Uni and Biaxial Results, The 14th International ESAFORM Conference on Material Forming, Queen’s University , Belfast, Irlande du Nord, April 27-29, 2011
Polymer Engineering & Science, in press
Online since: November 2012
Authors: Yuu Kuboyama, Satoshi Nishida, Daiji Noda, Tadashi Hattori
Using resin for the sensor material reduces the processing cost compared with conventional MEMS processes.
The resin material used this time was PC (polycarbonate) which has good adhesion to the thin Cu film.
Hattori: Electrostatic Capacity Type Micro Inclination Sensor Utilizing Dielectric Nano-Particles, Proceedings of the International Symposium on Micro-Nanomechatronics and Human Science, Nagoya, Japan, pp. 545-556(2006) [6] H.
Hattori: Precise Micro Pattern Replication by Hot Embossing, JSME International Journal, Vol. 49, No.1 pp. 69-73(2006) [9] K.
Hattori: Surface Modification and Direct Bonding of Different Materials Irradiated H2O Ion, Jornal of Advanced Mechanical Design Systems, and Manufacturing, Vol.2, pp.197-202(2008) [10] H.
Online since: January 2019
Authors: Ardeshir Mahdavi
These concepts involve a high-level distinction between the material-energetic and information-related aspects of the potency-valency relationships [1, 3, 11].
The material-energetic aspect refers to the assumption that nothing exists unless some amount of matter or energy is involved.
The idea is that exposure to various levels of physical (material-energetic) stimuli translate – in a more or less predictable way – into corresponding subjective experiences.
Human Ecology - The exact science of the interrelationships between Homo sapiens and the outside world surrounding this living and thinking being.
Aris; Journal of the Carnegie Mellon Department of Architecture.
Online since: March 2017
Authors: G.R. Ahmed Jamal, M. Rezanur Islam, M. Adnan Rahman, J. Ferdous Meem, R. Akter Sathie
The sensitivity of a gas sensor can be significantly enhanced by increasing the contact interfaces between the gas molecules and sensing materials.
Yeow, “A Review of Carbon Nanotubes-Based Gas Sensors”, Journal of Sensors, Vol. 2009, article 493904, 2009 [2] T.
Brus, “ Optical Spectroscopy of Individual Single-Walled Carbon Nanotubes of Defined Chiral Structure,” Science, Vol. 312, pp. 554-556, 2006 [4] G.
Yeh, “Three-terminal CNTs gas sensor for N2 detection,” Diamond and Related Materials, Vol. 14, no. 11-12, pp. 1872–1875, 2005 [10] J.
Online since: July 2006
Authors: Thomas H. Jr. Sanders, Tracie L. Durbin
The material properties and the concentration field are specified at stationary, or Eulerian, grid points.
Solute is rejected into the bulk phase and diffuses outwards into the matrix according to the material properties of the alloying element being considered.
Materials Science & Engineering A, 2003.
Journal of Computational Physics, 2002. 176(1): p. 205-227 [7] Reiso, O., H.G.
Showing 90571 to 90580 of 97103 items