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Online since: November 2012
Authors: Jarmila Degmová, Vladimir Slugeň, Filip Tuomisto, Stanislav Sojak, Jana Veterníková, Veronika Sabelová, Simo Kilpeläinen, M. Skarba
Fit Variant (reduction of chi-square) achieved value in range (1; 1.1).
The DBS data are also affected by mechanical treatment during the preparation of the samples.
Data for MA 957 were also measured for more samples of this material and its S-W behavior was confirmed.
In further work, these resultant data with data observed for irradiated samples will be compared.
Online since: November 2013
Authors: Xiao Liang Zou, Jing Song Wang, Qing Wei Guo, Liang Jia, Lei Xie
A large number of treatment methods have been applied to remove metal ions from wastewater containing chemical precipitation [8,9], chemical oxidation/reduction [10], membrane separation [11], ion exchange [12], solvent extraction [13-16], electrolysis [17] and adsorption [18].In these methods, adsorption is one of technically easy and the most economically favorable method.
To investigate the mechanism of adsorption, the gathered experimental data was fitted to kinetic models.
The effect of contact time on the removal of Cr (VI) by adsorbent is shown in Fig.1 (b), where the adsorption rate was no significant increase after 90 min, investigating the mechanism of adsorption, kinetic models have been exploited to describe the experimental data.
Fig.2 and Table 1 indicate that pseudo-first-order and pseudo-second-order model both are fit to the experimental data (R2>0.98), however the sorption fits better to the pseudo-second-order model (R2=0.9999) than to pseudo-first-order model (R2=0.9975).
(3) The maximum percentremoval could be up to over 99% and the experimental data obeyed pseudo-second-order model, indicating that the chemical sorption is the rate-limiting step
Online since: June 2014
Authors: Gergis W. William, Samir N. Shoukry, Jacky C. Prucz
Inverse rule of mixture [1] and Halpin-Tsai [2] formula have been used for predicting of transverse stiffness of lamina; however comparison with the experimental data indicated the results obtained using both methods represent the lower and upper estimates for the transverse stiffness values respectively for glass-epoxy composites [1].
The accuracy of the results predicted by the above FE models has been verified through correlation with both theoretical and experimental data [7].
A data file containing the deformed model becomes the starting file to which any magnitudes and configurations of transverse mechanical loading is applied prior to its reprocessing in a static or dynamic mode.
This reduction of stiffness with longer loading times can be observed from the stress-strain relations that were obtained for various loading intervals and plotted together on a single graph, as shown in the Figure 4.
· Predictions of transverse stiffness using models having unbonded interfaces agree better with the experimental data than predictions with bonded interfaces
Online since: October 2020
Authors: Varvara E. Rumyantseva, Viktoriya S. Konovalova
Experimentally calculated mass transfer characteristics for the system "2 % MgCl2 solution – cement concrete" Name of the indicator τ, [days] 14 28 42 56 70 Flow density of "free Ca(OH)2" in the sample, [kg/(m2·s)] 4.29∙10-7 3.00∙10-7 1.13∙10-7 1.07∙10-7 3.39∙10-8 Flux density of Mg2+ in the liquid, [kg/(m2·s)] 2.60∙10-8 4.43∙10-8 5.12∙10-8 5.15∙10-8 5.97∙10-9 Mass conductivity coefficient, [m2/s] 2.26∙10-9 1.73∙10-9 6.94∙10-10 7.27∙10-10 2.61∙10-10 The obtained data show that in the initial period the mass flow of the transferred component is maximum and then significantly decreases.
According to the data obtained using a mathematical model of corrosion of second types of concrete, it was found that the decomposition of highly basic components of cement stone begins after 2,5 years of exposure to the environment [20].
These data confirm the calculated results of determining the concentration of chloride ions necessary to start the corrosion process on the surface of the reinforcement in concrete during liquid corrosion.
Using the method of corrosion measurements, experimental data were obtained for reinforcement samples in 2 % MgCl2 solution.
Kim, Reduction effect of toxic substances for apartment buildings with an ecofriendly pre-cast composite structural system, Indoor and Built Environment. 22 (2013) 110-116
Online since: April 2005
Authors: David Farrar, J.E. Barralet, Adrian J. Wright, K.J. Lilley
Powder X-ray diffraction data were collected at room temperature using a Seimens D5000 diffractometer.
Results Precipitate: All calcium phosphate precipitates were confirmed to be apatite by analysis of XRD data.
XRD data was used to determine that this cement was composed of predominantly brushite and unreacted HA.
However, concentrations above this resulted in a > 65 % reduction in strength, Fig. 2.
Our data also suggest that the strength improvement was microstructural in origin (Fig. 2) since a finer crystal size was observed, though the mechanism may differ.
Online since: January 2012
Authors: Majid Gholami, Maryam Sadeghi
It is defined in a mathematical architecture to mimic the processed data in the network of neurons similar to human brain.
Its architecture is based upon an open communication structure in combination with the flexible electrical construction elaborating the moderated technology of future based on a new platform for dynamic exchange of data and information [17], [7].
It provides the new service options and modern advantages in ADA for exchanging both data and information in dynamic manner.
Nevertheless, ANNs could be more effective for data prediction in different applications which are constructed in complicated pattern.
Gulez, Neural network based switching control of AC–AC converter with DC–AC inverter for voltage sags, harmonics and EMI reduction using hybrid filter topology, Jornal of Simulation Modelling Practice and Theory 16 (2008) 597–612 [2] H.
Online since: October 2006
Authors: V.M. Figueiredo Bicalho, E.S. Palma, P. Smith Neto
For this last technique, rectangular rosettes were used, and with help of a Wheatstone bridge, and an acquisition data software.
These data were used as input data to calculate shear stress with torsion loadings of 200 and 300 daN.
Considering input data of plastic calibration constant of 1797 µε /fringe and compensator of 54 value/fringe to minimal visible resolution of 5 value, a shear stress of 13 MPa was obtained.
Ahlquist: Stress reduction in a Gear Tooth using Photoelasticity and Finite Elements Analysis, International Congress on Experimental and Applied Mechanics, Orlando, Flórida, June,(2000), p. 5-8
Online since: May 2012
Authors: Dong Ye Yuan, Xiao Long Sun, Tian Lai Yu
The test data is shown in Fig 1.
The test data is shown in Fig 2.
Fig 2 Shear modulus and temperature relations Analysis of Fig 2 can get the following rules: l The shear modulus of the two kinds bearing in low temperature conditions, the observed data of the shear modulus and shear modulus of the relative error of the maximum values were -12.25%, 10.01%, were less than 15%, satisfy the standard requirement.
l By -45 ˚C drop to -55 ˚C, within the scope of the silicon fat for consistency 4 #, belongs to the "hard" condition, with lower temperature change of the cone into is not big, cone into degrees for -6.7% reduction, consistency level without changing.
Experimental data is shown in Fig 8 and Fig 9.
Online since: November 2005
Authors: Eric J. Palmiere, W. Mark Rainforth, R.M. Poths
Temperature corrected equivalent stress-strain curves were calculated from the recorded data using standard procedures [5].
An FEI Sirion FEG SEM fitted with a fully automatic HKL Technology EBSD attachment, including the Nordlys CCD camera, was operated at 15kV to acquire the EBSD data.
Results Flow data.
At a strain of 0.3, there is a reduction in the Fe-30wt%Ni work hardening rate compared with the steel, although both curves tend towards a stress plateau at higher strains.
By increasing the magnification and decreasing the step size for EBSD data acquisition it is also possible to map the substructure within the deformed grains.
Online since: May 2006
Authors: A. Morão Dias, J.C.P. Pina, Maria José Marques, J.M.M. dos Santos
However, for thin films specific problems arise, which contribute to a reduction of the diffracted intensity.
Finally, the collected data have to be corrected for the asymmetric scattering geometry.
The data collection for texture analysis at low-incidence angles must take into account two diffraction peak characteristics inherent to the technique: the low counting intensity, which reduces the counting statistic, and the peak broadening that may lead to loss of information in the detector window.
The location correction evidences a "blind" zone in the central area of the pole figures where the data cannot be collected.
Therefore, some authors have proposed only taking diffraction data at these texture poles; this is called the crystallite group method [1].
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