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Online since: March 2019
Authors: Van Khien Nguyen, Duy Luong Tuong, Pham Huy Hoang, Huy-Tuan Pham
Due to its special design, the cavity inside the hinge can also be filled with an elastomeric filler material to provide vibration damping.
They are created by specially forming notches in the material, causing a much lower flexural strength at that point.
Space is introduced to the inner of the hinges which can be filled with elastomeric material to improve the damping coefficient.
Design parameterization Two materials are used for the hinge including aluminum alloy and silicone rubber.
[11] Pham H.H, Micro-motion selective-actuation XYZ flexure parallel mechanism: design and modeling, Journal of Micromechatronics, 3(1) (2005), 51-73
They are created by specially forming notches in the material, causing a much lower flexural strength at that point.
Space is introduced to the inner of the hinges which can be filled with elastomeric material to improve the damping coefficient.
Design parameterization Two materials are used for the hinge including aluminum alloy and silicone rubber.
[11] Pham H.H, Micro-motion selective-actuation XYZ flexure parallel mechanism: design and modeling, Journal of Micromechatronics, 3(1) (2005), 51-73
Online since: October 2011
Authors: Tao Xiong, Yin Huang, Ming Yong Xie
Materials and Methods
A.Bacteria strain and media
The Lactobacillus rhamnosus NCU 239 Strain uesd in our experiments was stocked by state key laboratory of food science and technology, Nanchang university.The medium for inoculum preparation and fermentation contained the following(in g.L-1): 20 glucose, 10 peptone, 10 beef extract, 5 yeast extract, 5 sodium acetate, 2 diammonium hydrogen cirate, 2 KH2PO4, 0.25 MnSO4._7H2O, 0.58 MgSO4._7H2O, 1ml tween 80.
Beijing: Science Press. 1995: 797-810
Food Science and Technology ,2005(9): 94-98
Science and Technology, 2009, 25(2):82-96
Journal of dairy science, 2005, 4: 1352-1357
Beijing: Science Press. 1995: 797-810
Food Science and Technology ,2005(9): 94-98
Science and Technology, 2009, 25(2):82-96
Journal of dairy science, 2005, 4: 1352-1357
Online since: January 2005
Authors: Kyung Su Park, Jeong Sook Kim, Hyo Min Lee, Hee Soo Pyo, Kang Bong Lee, Soon Tae Kim
Journal Citation (to be inserted by the publisher)
Copyright by Trans Tech Publications
Speciation of Six Arsenic Compounds in Korean Seafood
Samples by HPLC-ICP-MS
Kyung Su Park1, Jeong Sook Kim
1, HyoMin Lee
3, Heesoo Pyo
2,
Sun-Tae Kim
1, Kang Bong Lee
1
1
Advanced Analysis Center, Korea Institute of Science and Technology, P.O.Box 131,
Cheongryang, Seoul, 130-650, Korea
, pks6475@kist.re.kr
2
Bioanalysis and Biotransformation Research Center, Korea Institute of Science and
Technology, P.O.Box 131, Cheongryang, Seoul, 130-650, Korea
3
Division of Risk Assesment, National Institute of Toxicological Research
Keywords: Arsenic, Speciation, HPLC-ICP-MS, Seafood samples.
Extracts of 33 samples of seaweed, shrimp, fish and shellfish, including two certified reference materials, were investigated for their contents of arsenic compounds (arsenic speciation).An anion exchange high performance liquid chromatography procedure was optimized to separate six arsenic compounds present in the seafood samples with dynamic reaction gas cell by inductively coupled plasma mass spectrometry.
Extracts of 33 samples of seaweed, shrimp, fish and shellfish, including two certified reference materials, were investigated for their contents of arsenic compounds (arsenic speciation).An anion exchange high performance liquid chromatography procedure was optimized to separate six arsenic compounds present in the seafood samples with dynamic reaction gas cell by inductively coupled plasma mass spectrometry.
Online since: May 2012
Authors: Ming Chang, Xin Zhi Wang, Wei Liu, Jian Guo Song
Effects of Meteorological Factors on PM10 Pollution in Yantai Urban Areas
Jianguo Song, Ming Chang, Xinzhi Wang, Wei Liu*
Department of Environment and Materials Engineering, Yantai University, Yantai 264005
*: Corresponding author, liuweiyt@126.com
Keywords: PM10 pollution, Meteorological factors, Yantai urban areas.
Acknowledgements This work has been financially supported by the Precision Management of Water and Fertilizer and Research and Demonstration of Technology Promotion in Soil Quality (Science and Technology Fund of Yantai University, HJ10H79 and HJ12H005).
Advanced Materials Research, 2012, 356:2118-2123
International Journal of Environmental Health Research, 2008, 18(6):429-450.
Acknowledgements This work has been financially supported by the Precision Management of Water and Fertilizer and Research and Demonstration of Technology Promotion in Soil Quality (Science and Technology Fund of Yantai University, HJ10H79 and HJ12H005).
Advanced Materials Research, 2012, 356:2118-2123
International Journal of Environmental Health Research, 2008, 18(6):429-450.
Online since: January 2014
Authors: Yan Fang Yue, Zhi Bo Xin, Jin Ye Wang
Finite Element Analysis for the Welding Column of CNC Boring Machine
YUE Yan-fanga, XIN Zhi-bob and WANG Jin-yec
School of Mechanical & electrical Engineering, Hebei University of Science & Technology, Shijiazhuang, Hebei 050018, China
ayanfangyue@126.com,bxinzhibo100@163.com,cwangjinye3@163.com
Keywords: Welding Column of CNC Boring; Finite Element Analysis; Stress; Strain
Abstract.
The Column choice Q235 steel as welding material, select the corresponding coefficient of material is: the elastic modulus is EX = 2.06 x 1011 pa; Poisson's ratio PRXY = 0.3; Density of ρ= 7.8 kg/m2.Form of meshing using intelligent, the Smart Size level set to 4.After meshing, node number is 794859, unit number to 425253.Finite element model is shown in figure 2.
Stress concentration occurs in the ribs of column bottom plate, the maximum stress is 87.4684MPa, and it far less than the material allowable stress 235MPa.
In order to lose weight and reduce material waste to optimized the structure of column.
AIAA Journal, 2004,42(3):622-630
The Column choice Q235 steel as welding material, select the corresponding coefficient of material is: the elastic modulus is EX = 2.06 x 1011 pa; Poisson's ratio PRXY = 0.3; Density of ρ= 7.8 kg/m2.Form of meshing using intelligent, the Smart Size level set to 4.After meshing, node number is 794859, unit number to 425253.Finite element model is shown in figure 2.
Stress concentration occurs in the ribs of column bottom plate, the maximum stress is 87.4684MPa, and it far less than the material allowable stress 235MPa.
In order to lose weight and reduce material waste to optimized the structure of column.
AIAA Journal, 2004,42(3):622-630
Online since: January 2013
Authors: Jin Feng, Xian Yong Zhang
But in fact, the dispersion performance of pipe materials, the uneven production quality, actual operation pressure fluctuation, and deviation of casing wear depth, these influence factors were variable, thus the traditional method analysis will carry some risks.
Set work pressure for ‘S’, the residual strength of casing for ‘R’, ‘S’ and ‘R’ are independent, so wear casing stress-strength interference model is: (1) The reliability of wear casing is: (2) Casing are generally high toughness materials that failure mode is mainly plasticity invalidation.
Acknowledgements This work is supported by National Natural Science Foundation of China, 51075043/E050403.
Dawson: SPE Drilling Engineering Vol. 2(1) (1987) [2] Yonquan Yin, Zhaowei Chen and Ping’en Li: Chinese Journal of Theoretical and Applied Mechanics Vol. 38(6) (2006) (In Chinese) [3] A.J.
Set work pressure for ‘S’, the residual strength of casing for ‘R’, ‘S’ and ‘R’ are independent, so wear casing stress-strength interference model is: (1) The reliability of wear casing is: (2) Casing are generally high toughness materials that failure mode is mainly plasticity invalidation.
Acknowledgements This work is supported by National Natural Science Foundation of China, 51075043/E050403.
Dawson: SPE Drilling Engineering Vol. 2(1) (1987) [2] Yonquan Yin, Zhaowei Chen and Ping’en Li: Chinese Journal of Theoretical and Applied Mechanics Vol. 38(6) (2006) (In Chinese) [3] A.J.
Online since: July 2014
Authors: Juan Du, Xiao Liang Wang, Guang Fan Li
Relative to the complex equipment modification and sample preparation, this paper proposes a new idea, simulated combustible ice which means using conventional materials to simulate the structure form of combustible ice, get the mechanics performance through triaxial test and analysis the geological problems may encounter in the process of exploit combustible ice.
Different skeleton materials combustible ice samples should be studied by means of triaxial test in response to the kinds of geological environment during exploiting combustible ice.
Acknowledgements This work was financially supported by the the Natural Science Foundation of Hainan province [No. 513139], the Midwest Key Areas Construction Project Plan of Hainan University.
Journal of Geophysical Research-Solid Earth, 2007, 112(B4): 1-13
Different skeleton materials combustible ice samples should be studied by means of triaxial test in response to the kinds of geological environment during exploiting combustible ice.
Acknowledgements This work was financially supported by the the Natural Science Foundation of Hainan province [No. 513139], the Midwest Key Areas Construction Project Plan of Hainan University.
Journal of Geophysical Research-Solid Earth, 2007, 112(B4): 1-13
Online since: November 2014
Authors: Jian Wei Han, Wei Lv, Jian Min Gao, Qian Du, Chao Cheng, Xi Yu Lin
Mechanism and Condensation Heat Transfer Characteristics Research on the Depth of the Flue Gas Heat Recovery from Burning Natural Gas
Han Jianwei1, a, Lv Wei 1, b, Gao Jianmin2, Du Qian2, Cheng Chao1, Lin Xiyu1
1School of Mechanical and Power Engineering, Harbin University of Science and Technology, NO.52 Xuefu Street, Nangang District, Harbin, 150080, China
2Institute of Combustion Engineering, Harbin Institute of Technology, Harbin, 150001, China
aemail: 457773617@qq.com, bemail: qwer05308@126.com
Keywords: Flue gas of burning natural gas; Condensation heat transfer; Low temperature corrosion
Abstract.
This kind of material can be combined with a metal surface by physical or chemical adsorption and nonpolar hydrophobic groups towards the gas phase, which can reduce the surface of the condensed material. 2.
According to the plant and animal skin with some hydrophobic material, it’s to make hydrophobic surface material, as double-layer structure of lotus leaf surface micro-nano. 3.
Journal of Chemical Industry and Engineering (China), 2006,57 (12): 2816-2822.
This kind of material can be combined with a metal surface by physical or chemical adsorption and nonpolar hydrophobic groups towards the gas phase, which can reduce the surface of the condensed material. 2.
According to the plant and animal skin with some hydrophobic material, it’s to make hydrophobic surface material, as double-layer structure of lotus leaf surface micro-nano. 3.
Journal of Chemical Industry and Engineering (China), 2006,57 (12): 2816-2822.
Online since: June 2014
Authors: Fathoni Usman
The Plot of the stress against ratio of hw/tw from FEA results
Adding the coefficient k and incorporate the material properties, E = 2.05 x 106 N/mm2 and n = 0.3, the Eq. 10 becomes:
(12)
The results from the numerical analysis assumed the models are in Elastic-Isotropic material.
With that assumption, Eq. 12 is sufficient when the material is in linear elastic stage, Therefore Eq.12 can be determined as the elastic critical shear stress, tcre.
Inelastic buckling occurs after the stress exceeded the proportional limit of the material and before the stress reaches the ultimate strength [3].
Yuen, The Influence of Boundary Conditions on the Shear Buckling Behavior of Thin Corrugated Plates, International Conference on Advances in Steel Structures, Elsevier Science (1996) 709-714
Hamilton, Shear Strength of Beams with Corrugated Webs, Journal of Structural Engineering (1996)
With that assumption, Eq. 12 is sufficient when the material is in linear elastic stage, Therefore Eq.12 can be determined as the elastic critical shear stress, tcre.
Inelastic buckling occurs after the stress exceeded the proportional limit of the material and before the stress reaches the ultimate strength [3].
Yuen, The Influence of Boundary Conditions on the Shear Buckling Behavior of Thin Corrugated Plates, International Conference on Advances in Steel Structures, Elsevier Science (1996) 709-714
Hamilton, Shear Strength of Beams with Corrugated Webs, Journal of Structural Engineering (1996)
Online since: June 2011
Authors: Brendan O'Flynn, Michael Hayes, Cian O'Mathuna, Ning Ning Wang, Wen Si Wang
The Seebeck effect enable this device generates electric potential when a temperature difference applied across P-N junctions of thermoelectric material in TEG device.
Furthermore, the Seebeck coefficient of most commercial off-the-shelf thermoelectric material can only create voltage of the order of micro volts per Kelvin, the voltage difference provided by the TEGs are insufficient to directly power WSN.
However, the size of mechanical manufactured Bismuth telluride thermopiles is difficult to scale down further in the foreseeable future due to the characteristics of the material and manufacture process.
Sensors Journal, IEEE 8(6): 678-681
Wang; Jafer, E.; Hayes, M.; O'Flynn, B.; O'Mathuna, C.; , "Autonomous wireless sensor network based Building Energy and Environment Monitoring system design," Environmental Science and Information Application Technology (ESIAT), 2010 International Conference on , vol.3, no., pp.367-372, 17-18 July 2010
Furthermore, the Seebeck coefficient of most commercial off-the-shelf thermoelectric material can only create voltage of the order of micro volts per Kelvin, the voltage difference provided by the TEGs are insufficient to directly power WSN.
However, the size of mechanical manufactured Bismuth telluride thermopiles is difficult to scale down further in the foreseeable future due to the characteristics of the material and manufacture process.
Sensors Journal, IEEE 8(6): 678-681
Wang; Jafer, E.; Hayes, M.; O'Flynn, B.; O'Mathuna, C.; , "Autonomous wireless sensor network based Building Energy and Environment Monitoring system design," Environmental Science and Information Application Technology (ESIAT), 2010 International Conference on , vol.3, no., pp.367-372, 17-18 July 2010