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Online since: July 2014
Authors: Lan Bo Di
The Au/P25 catalysts were prepared by deposition-precipitation with DBD plasma reduction method (denoted as Au/P25-P) and a conventional thermal impregnation method (denoted as Au/P25-H), respectively.
All data were acquired after 30 min reaction time to allow the attainment of steady state.
All data were acquired after 30 min reaction time to allow the attainment of steady state.
Online since: September 2013
Authors: Qing Shan Li, Bo Qiu, Yun Sen Sun
Introduction
The negative ions in the air has a positive effect on the growth of the body and preventing disease: (1)Aoion can improve the lung organ function and respiratory villi cleaning efficiency; (2)Aoion can reduce blood pressure and enhance myocardial function; (3)Strong oxidation-reduction.
In a certain volume test chamber, the number of negative air ion which are excited in the unit volume of space is tested when the sample are mutual rubbed which is under the specified conditions of GB/T6529, and then the negative air ion passed through the automatic inlet of test equipment, and at last the data is readed by computer.
In a certain volume test chamber, the number of negative air ion which are excited in the unit volume of space is tested when the sample are mutual rubbed which is under the specified conditions of GB/T6529, and then the negative air ion passed through the automatic inlet of test equipment, and at last the data is readed by computer.
Online since: September 2013
Authors: Yu Gang Zhou, Huan Min Xu
The analysis method can be used in the field of safety and reliability of CSD to determine the probability of a safety accident and lay the foundation for reduction the probability of failure in dredgers.
Once constructed and appropriate data supplied for the basic events the analysis of the fault tree can be undertaken.
Once constructed and appropriate data supplied for the basic events the analysis of the fault tree can be undertaken.
Online since: October 2014
Authors: Gheorghe Oancea, Emilian Ionut Croitoru
Finite element model - loadings
In order to complete the necessary analysis data, the following conditions and requirements have to be used:
· General:
o units – [1000 mm] used;
· Geometry:
o unnecessary holes and uncritical radiuses removed from model;
· FE-model:
o parts connected appropriately;
o no open edges in the model;
o normal vector of the elements justified;
o no double elements in model;
o node equivalence;
· Elements:
o not more than 5% CTRIAs used;
o no “bad” elements – jacobian ratio less than 2.00;
· Properties:
o correct properties for all element types;
o correct material and orientation for all elements;
o correct layup and orientation for composites – global ply ID used;
o weight of the panel correct;
· Boundary conditions:
o correct boundary conditions on correct nodes;
o renumbering of nodes with boundary conditions;
o correct loads and forces (force [N], pressure [MPa], acceleration [m/s]);
· Load cases:
o load cases correct loads and boundary
Thus, these materials are: light-weight materials – reduction in weight for the considered panel of 90%; high strength related to weight – tensions related to mechanical properties are similar; good resistance to corrosion; high-impact strength – proven also in this article; good flexibility – low deformations according to the detailed FEM; dimensional stability – no change in the shape of the materials; part consolidation – lower number of parts; durable – many composites have been in service for half a century; others: low thermal conductivity, radio translucent, non-conductive and non-magnetic properties.
Thus, these materials are: light-weight materials – reduction in weight for the considered panel of 90%; high strength related to weight – tensions related to mechanical properties are similar; good resistance to corrosion; high-impact strength – proven also in this article; good flexibility – low deformations according to the detailed FEM; dimensional stability – no change in the shape of the materials; part consolidation – lower number of parts; durable – many composites have been in service for half a century; others: low thermal conductivity, radio translucent, non-conductive and non-magnetic properties.
Online since: June 2010
Authors: Dainius Udris, Sigitas Šakalinis
Firmware
modification was inconclusive and required a microstep number reduction.
The scale position is calculated from rotary encoder output signals, and there is two way communications with a host PC, implementing a test rig control and measured data visualization.
The scale position is calculated from rotary encoder output signals, and there is two way communications with a host PC, implementing a test rig control and measured data visualization.
Online since: September 2010
Authors: Gábor Romhány, Gábor Szebényi
The instrumented falling weight impact (IFWI) tests have been performed on a Ceast Fractovis
IFWI tester equipped with a Ceast DAS 8000 data acquisition system according to EN ISO 6603-2.
With increasing irradiation doses, the ILSS of the composite has increased by 11% to the dose of 50 kGy, after that a slight decrease could be observed, which can lead to the assumption, that between 50 and 100 kGy the dominance of the beneficial effect of the increase in crosslinking density has been changed to the negative effect of the reduction of chain segment lengths of the epoxy matrix.
With increasing irradiation doses, the ILSS of the composite has increased by 11% to the dose of 50 kGy, after that a slight decrease could be observed, which can lead to the assumption, that between 50 and 100 kGy the dominance of the beneficial effect of the increase in crosslinking density has been changed to the negative effect of the reduction of chain segment lengths of the epoxy matrix.
Online since: May 2012
Authors: Li Yang, Wei Zhang, Juan Xu
According to the influencing factors and availability of data, combing with the main problem existing in the Yangtze River Delta, indices was composited with three aspects in this paper: Economic development (shown in Table 1), Social development (shown in Table 2), resources and environmental press (shown in Table 3).
So they should take the new urbanization road: optimizing and upgrading the industrial structure, energy-saving and emission reduction should be considered.
So they should take the new urbanization road: optimizing and upgrading the industrial structure, energy-saving and emission reduction should be considered.
Online since: March 2010
Authors: Jie Tao, Xun Zhong Guo, Zheng Yuan
In addition, the hydroforming technology increases production efficiency with high
quality and reduces wasters, resulting in the enhancement of economic benefit and the reduction of
manufacturing cost [2,3].
The properties for the Al 5083 tube were obtained from the tensile test with the following data: E=69GPa, γ=0.33, K=480GPa, n=0.4, σs=145MPa, σb=290MPa.
The properties for the Al 5083 tube were obtained from the tensile test with the following data: E=69GPa, γ=0.33, K=480GPa, n=0.4, σs=145MPa, σb=290MPa.
Online since: November 2006
Authors: Xiang Guo Wu, Sang Mook Han, Sung Wook Kim, Su Tae Kang
(9)
γ as a reduction factor is introduced here considering the influence inner defects, and equals 0 /γ λ in which 0γ equals 0.3 for non-prestress and partial prestressed steel, and 0.5 for full
prestressed steel.
Results Comparison Between Test and Limit Analysis 0.00E+00 2.00E+05 4.00E+05 6.00E+05 8.00E+05 1.00E+06 1.20E+06 1.40E+06 NPW5-L5 NPW5L10 NPW7L15 HPW5-L5 HPW5L10 HPW7L15 FPW5-L5 FPW5L10 FPW7L10 FPW7L10B FPW7L15 FPW7L15B Shear Failure Load (N) Test Results Ultimate Analysis Results Fig. 3 Solution of x of FR-W5-L5 Beam Fig. 4 Data Comparison Conclusions To assume SFR-UHPCC as modified Coulomb material is relative reasonable.
Results Comparison Between Test and Limit Analysis 0.00E+00 2.00E+05 4.00E+05 6.00E+05 8.00E+05 1.00E+06 1.20E+06 1.40E+06 NPW5-L5 NPW5L10 NPW7L15 HPW5-L5 HPW5L10 HPW7L15 FPW5-L5 FPW5L10 FPW7L10 FPW7L10B FPW7L15 FPW7L15B Shear Failure Load (N) Test Results Ultimate Analysis Results Fig. 3 Solution of x of FR-W5-L5 Beam Fig. 4 Data Comparison Conclusions To assume SFR-UHPCC as modified Coulomb material is relative reasonable.