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Online since: December 2010
Authors: Bin Lei, Gu Quan Song, Lang Wu
Chemical shrinkage is the reduction of absolute volume of cement paste in hydration process.
Examples For the sake of verifying the present model, the data of reference [4][5] is applied, and the experimental parameters are listed in table 3.
Table 3 Compositions of four types of clinker Cement identification Bogue composition C3S(%) C2S(%) C3A(%) C4AF(%) A[4] 70.15 7.77 3.81 5.95 B[4] 53.1 25.9 6.9 9.7 C[5] 71.6 10.9 3.7 10.7 D[5] 56.7 17.2 6.7 7.9 Chemical shrinkage curve at different water-cement ratio Put the data of table 3 into equation (6), according to equations (7)-(9), the chemical shrinkage curves of type A and B of water-cement ratio (0.3, 0.4, 0.5) at 20 are obtained, and compared with experiment results of reference[8], as shown in Fig.5, 6.
Examples For the sake of verifying the present model, the data of reference [4][5] is applied, and the experimental parameters are listed in table 3.
Table 3 Compositions of four types of clinker Cement identification Bogue composition C3S(%) C2S(%) C3A(%) C4AF(%) A[4] 70.15 7.77 3.81 5.95 B[4] 53.1 25.9 6.9 9.7 C[5] 71.6 10.9 3.7 10.7 D[5] 56.7 17.2 6.7 7.9 Chemical shrinkage curve at different water-cement ratio Put the data of table 3 into equation (6), according to equations (7)-(9), the chemical shrinkage curves of type A and B of water-cement ratio (0.3, 0.4, 0.5) at 20 are obtained, and compared with experiment results of reference[8], as shown in Fig.5, 6.
Online since: December 2012
Authors: Wang Jing, Chun Ying Dong, De Rong Tan
Vehicle dynamic performance will be better with higher reduction ratio, but fuel economy will lower.
Simulation data were in line with experimental data of the original bus, which enhanced the simulation credibility of the software.
Simulation data were in line with experimental data of the original bus, which enhanced the simulation credibility of the software.
Online since: December 2013
Authors: Wei Min Zhong, Zheng Ping Wang, Pan Pan Guo, Yan Zhou
Due to its unique chemical structure, PFOS is very stable in ambient environments, so it is difficult for conventional methods such as oxidation and reduction to decompose it [7].
As shown in Fig.2, the pseudo-second-order model fitted the experimental data better than the pseudo-first-order model according to the value of (R2), suggesting the sorption of PFOS onto the MIP or NIP is mainly chemical adsorption.
From this experiment, the adsorption reached equilibrium nearly after 3h and the sorption amount of the MIP adsorbents for PFOS reached up to 117.6 mg/g, higher than 74.6 mg/g of the NIP adsorbents, at the same time, pseudo-second-order kinetic model fit the experiment data well.
As shown in Fig.2, the pseudo-second-order model fitted the experimental data better than the pseudo-first-order model according to the value of (R2), suggesting the sorption of PFOS onto the MIP or NIP is mainly chemical adsorption.
From this experiment, the adsorption reached equilibrium nearly after 3h and the sorption amount of the MIP adsorbents for PFOS reached up to 117.6 mg/g, higher than 74.6 mg/g of the NIP adsorbents, at the same time, pseudo-second-order kinetic model fit the experiment data well.
Online since: December 2014
Authors: Wei Jing Zhang, Lan Xiang Liu
Rule 3: if target object and the controlled object distance gradually increased and D is between L+△m and L+△n, not unlock signal output strength reduction.
The actual experimental data be shown as in Table 1.
Table 1 The actual testing data Pre-set distance(m) The actual distance(m) The parameter value(KΩ) The error 7 6.7 350 4% 7 6.6 360 5% 7 7.3 390 4.2% 7 7.4 400 5.7% Conclusion Based on the analysis of the control theory as the foundation, designed the alarm device, in practical application, operation is reliable and the test error is less than 6.5%, which prove that it is the scientific and rational.
The actual experimental data be shown as in Table 1.
Table 1 The actual testing data Pre-set distance(m) The actual distance(m) The parameter value(KΩ) The error 7 6.7 350 4% 7 6.6 360 5% 7 7.3 390 4.2% 7 7.4 400 5.7% Conclusion Based on the analysis of the control theory as the foundation, designed the alarm device, in practical application, operation is reliable and the test error is less than 6.5%, which prove that it is the scientific and rational.
Online since: July 2015
Authors: Fernando M.F. Rhen, David Richardson
XRD analysis indicates that the Co-B deposit is an amorphous structure (data not shown).
However, the pH within the pores decreases causing a reduction in the deposition rate of the nanotubes.
However, the data suggests that the observed anisotropy is due to the presence of the Co-B thin film.
However, the pH within the pores decreases causing a reduction in the deposition rate of the nanotubes.
However, the data suggests that the observed anisotropy is due to the presence of the Co-B thin film.
Online since: February 2014
Authors: Gana Abdou Lawane, Adamah Messan, Anne Pantet, Raffaele Vinai, Jean Hugues Thomassin
Reduction of laterite strength up to 50 % on wetting is observed (only few % increases in moisture content is enough to reduce the strength more than 50 % of the dry strength [5, 6].
Nowadays, the incomplete characterization of the material, due to the lack of reliable experimental data, renders uncertain the calibrations of others numerical models, more sophisticated (non linear behavior, elasto-plastic with softening rules….) and limits the FEM modeling at simple approach, which complete the basic and practice approach with Eurocode 6.
At future, a better physical representation by incorporating interface elements/contact should be investigated but inevitably requires the experimental data on the properties of these interfaces.
Nowadays, the incomplete characterization of the material, due to the lack of reliable experimental data, renders uncertain the calibrations of others numerical models, more sophisticated (non linear behavior, elasto-plastic with softening rules….) and limits the FEM modeling at simple approach, which complete the basic and practice approach with Eurocode 6.
At future, a better physical representation by incorporating interface elements/contact should be investigated but inevitably requires the experimental data on the properties of these interfaces.
Online since: January 2016
Authors: Peter Hanuliak, Miroslav Fabian, Peter Hartman, Stanislav Darula
The input data of solar altitude and azimuth of sun during eclipse phases
Phases of the eclipse
Start
Maximum
End
Average values
9:38 a.m.
10:47 a.m.
11:50 a.m.
Reduction of intensity of spectral power distribution was studied at wavelengths 420 nm (blue colour), 450 nm (biological stimulation), 555 nm (maximum photopic efficiency), and 720 nm (red colour) representing peaks of various electromagnetic radiation effects on the human body. 9:55 10:05 10:20 10:25 10:30 10:36 10:40 10:47 Figure 2.
The data logger Almemo 2590 with two heads of the type FL A623-VL positioned horizontally and 45° inclined opposite to sun registered minute instantaneous illuminance changes.
Reduction of intensity of spectral power distribution was studied at wavelengths 420 nm (blue colour), 450 nm (biological stimulation), 555 nm (maximum photopic efficiency), and 720 nm (red colour) representing peaks of various electromagnetic radiation effects on the human body. 9:55 10:05 10:20 10:25 10:30 10:36 10:40 10:47 Figure 2.
The data logger Almemo 2590 with two heads of the type FL A623-VL positioned horizontally and 45° inclined opposite to sun registered minute instantaneous illuminance changes.
Online since: October 2015
Authors: Stefan Nowak, Agnieszka Ulfik, Robert Stefko
Such systems enable accurate records, assessment and presentation of environmental data in the enterprise.
The second reason is having an indirect reduction of costs reflected in the identification of ecological potential savings[10].
The usefulness of the application depends on the decision of the municipality in terms of data sharing.
The second reason is having an indirect reduction of costs reflected in the identification of ecological potential savings[10].
The usefulness of the application depends on the decision of the municipality in terms of data sharing.
Online since: June 2008
Authors: Yuri Estrin, L.L. Rokhlin, Sergey V. Dobatkin, Vladimir Serebryany, Mikhail V. Popov, V.N. Timofeev, A.S. Gordeev
Material, Experimental Procedures and Calculations
As-received Mg-0.49%Al-0.47% Ca alloy was in the form of a bar obtained by extrusion at
340ºC with the total diameter reduction of ~ 4.4.
The experimental data obtained from the X-ray measurements were processed for quantitative texture analysis and for the study of the relations between the texture and the ECAP deformation modes.
Ivanova for their help with processing the data of quantitative texture analysis.
The experimental data obtained from the X-ray measurements were processed for quantitative texture analysis and for the study of the relations between the texture and the ECAP deformation modes.
Ivanova for their help with processing the data of quantitative texture analysis.
Online since: December 2006
Authors: Eui Gyun Na, Tae Hyun Baek, Seung Kee Koh, K.J. Kang, S.T. Ahn, T.H. Han
Strain hardening exponent(n) and strength coefficient(K) were determined as 0.0437 and 1547MPa
from data reduction.
Stress amplitude was obtained from the stabilized hysteresis loop and n', K' were calculated from the log-log linear regression of the plastic strain amplitude and stress amplitude data.
Stress amplitude was obtained from the stabilized hysteresis loop and n', K' were calculated from the log-log linear regression of the plastic strain amplitude and stress amplitude data.