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Online since: May 2021
Authors: D.V. Zaitsev
Research Methodology
Based on the data, [5,7] studied steel fiber-reinforced concrete based on a matrix of self-compacting cement-sand solution (table 1).
It is known, however, that with an increase in the content of different fibers, the degree of size reduction either decreases or increases.
The influence on the change in the mass, size and density of the quantity and type of fiber is not unambiguous, does not fully correspond to the theoretical provisions considered in the work and requires further research, at least on the basis of a comprehensive analysis of the data. 6.
In further investigations, the authors will conduct analysis of the data obtained in order to establish such dependencies.
Ivanenko, Results of verification of the model of fiber concrete structure developed for analytical determination of its thermal and radiation changes based on experimental data of shrinkage during hardening, Internet-journal "science of SCIENCE" That. 8, 4 (2016). http://naukovedenie.ru/PDF/43TVN416.pdf.
It is known, however, that with an increase in the content of different fibers, the degree of size reduction either decreases or increases.
The influence on the change in the mass, size and density of the quantity and type of fiber is not unambiguous, does not fully correspond to the theoretical provisions considered in the work and requires further research, at least on the basis of a comprehensive analysis of the data. 6.
In further investigations, the authors will conduct analysis of the data obtained in order to establish such dependencies.
Ivanenko, Results of verification of the model of fiber concrete structure developed for analytical determination of its thermal and radiation changes based on experimental data of shrinkage during hardening, Internet-journal "science of SCIENCE" That. 8, 4 (2016). http://naukovedenie.ru/PDF/43TVN416.pdf.
Online since: January 2020
Authors: D.I. Tishkevich, A.I. Vorobjova, Alex V. Trukhanov
Electronic data were processed with the surface explorer document (SED) software kit.
From this data it is visible, as the membrane, and NWs have the uniform geometrical sizes.
Figure 2 presents the results of TGA data for Ni NWs/PAA in air.
TGA data for PAA membrane in air.
Shaped lines designated positions of diffraction lines of reference powder Ni of the database of the International Center for diffraction data (JCPDS).
From this data it is visible, as the membrane, and NWs have the uniform geometrical sizes.
Figure 2 presents the results of TGA data for Ni NWs/PAA in air.
TGA data for PAA membrane in air.
Shaped lines designated positions of diffraction lines of reference powder Ni of the database of the International Center for diffraction data (JCPDS).
Online since: September 2012
Authors: Patrick Dyer
With supporting data, the evaluation of these samples explores the potential of integrating small diameter Nitinol wires into woven structures and the resultant levels of shape transfer, control and cyclic speed achievable.
As part of the ADAPT Project it was noted that with a reduction in the NiTi diameter there was a corresponding reduction in the shape memory effect [12-14].
To balance this reduction it is proposed that a corresponding increase in the NiTi volume fraction would re-establish the shape memory effect.
If the intersections between the SMA and supporting textile is reduced and offers too much freedom of movement, the shape transfer from the wire to the textile sees a corresponding reduction and a more open arc is formed.
The first of these was the increased weight and bulk of the fabric due to the number of warp threads, but more critically the increase in end per inch results in a corresponding reduction in weft threads per inch.
As part of the ADAPT Project it was noted that with a reduction in the NiTi diameter there was a corresponding reduction in the shape memory effect [12-14].
To balance this reduction it is proposed that a corresponding increase in the NiTi volume fraction would re-establish the shape memory effect.
If the intersections between the SMA and supporting textile is reduced and offers too much freedom of movement, the shape transfer from the wire to the textile sees a corresponding reduction and a more open arc is formed.
The first of these was the increased weight and bulk of the fabric due to the number of warp threads, but more critically the increase in end per inch results in a corresponding reduction in weft threads per inch.
Online since: September 2013
Authors: Da You Xu, Jie Zhang, Sheng Jie Chen
At the same time, it can help enterprise search the reduction opportunities constantly that the most cost effectiveness by estimating and accounting the GHG emissions.
We get the critical value “a” and “b” of carbon management performance and economic and social performance by analytical calculation of the indicator data.
Two general P indicators of the sample observation data has extracted.
is determined by the data of the discriminant matrix.
And we can get discriminant value B in the same way after getting the data of economic and social performance of the enterprise.
We get the critical value “a” and “b” of carbon management performance and economic and social performance by analytical calculation of the indicator data.
Two general P indicators of the sample observation data has extracted.
is determined by the data of the discriminant matrix.
And we can get discriminant value B in the same way after getting the data of economic and social performance of the enterprise.
Online since: April 2019
Authors: Xu He Hou, Bao Ying Lu
In Situ Rapid Dechlorination by Microwave-Assisted Catalytic Reduction of Chlorobenzene and 1,4-Dichlorobenzene
on Raney Ni-Al Alloy Catalyst
Baoying Lu1,a, and Xuhe Hou1,a*
1Guangxi University of Science and Technology, Chemistry Department, 545000, Liuzhou, China
a*Corresponding author: 100000778@gxust.edu.cn
Keywords: Microwave-assisted catalytic reductive, Dechlorination, Raney Ni-Al alloy catalyst
Abstract.
In recently years, many methods have been used for degradation of chlorinated organic compounds, among which zero-valent metal reduction has been used in water remediation for over a decade.
Some typical metal catalysts, such as noble metals and transition metals, have been used for catalytic reduction of chlorinated organic compounds[5-10].
Among such zero-valent metal catalysts, Raney Nickel, used as a heterogeneous catalyst, has good efficiency for catalytic reduction in a hydrogen atmosphere[11-14].
The specific surface area, SBET, was calculated according to the BET model by the multipoint method from the data obtained in the range 0.05 < P/P0 < 0.3, where P/P0 is the relative pressure of nitrogen and P0 is the saturation pressure of nitrogen.
In recently years, many methods have been used for degradation of chlorinated organic compounds, among which zero-valent metal reduction has been used in water remediation for over a decade.
Some typical metal catalysts, such as noble metals and transition metals, have been used for catalytic reduction of chlorinated organic compounds[5-10].
Among such zero-valent metal catalysts, Raney Nickel, used as a heterogeneous catalyst, has good efficiency for catalytic reduction in a hydrogen atmosphere[11-14].
The specific surface area, SBET, was calculated according to the BET model by the multipoint method from the data obtained in the range 0.05 < P/P0 < 0.3, where P/P0 is the relative pressure of nitrogen and P0 is the saturation pressure of nitrogen.
Online since: May 2014
Authors: Xuekelaiti Aerken, Halidan Maimaiti
The results indicated that when the polymerization of the MCC was smaller than 96 and the DS greater than 0.375, SBC exhibited water-reduction.
As is typical in patent literature, no conclusive data analyzing the dependence of the flow-increasing effect on such structural parameters as molecular weight have been reported.
When the DP of the MCC decreased, the surface tension of the SBC aqueous solutions decreased, indicating that the reduced molecular weight improved the wetting effect of the water-reducing agent on the cement particles, thus enhancing water reduction.
Thus, at an appropriate SBC molecular weight, increasing the degree of butylsulfonyl substitution is beneficial for water reduction
The study of the relationship between the molecular structure and the function of the SBC indicated that when the polymerization of MCC was smaller than 96 and the DS greater than 0.375, the SBC exhibited water-reduction capabilities.
As is typical in patent literature, no conclusive data analyzing the dependence of the flow-increasing effect on such structural parameters as molecular weight have been reported.
When the DP of the MCC decreased, the surface tension of the SBC aqueous solutions decreased, indicating that the reduced molecular weight improved the wetting effect of the water-reducing agent on the cement particles, thus enhancing water reduction.
Thus, at an appropriate SBC molecular weight, increasing the degree of butylsulfonyl substitution is beneficial for water reduction
The study of the relationship between the molecular structure and the function of the SBC indicated that when the polymerization of MCC was smaller than 96 and the DS greater than 0.375, the SBC exhibited water-reduction capabilities.
Online since: January 2016
Authors: Maciej Walkowiak, Anna Witenberg, Katarzyna Jagodzińska
We focused on the calculation of natural frequencies with data disorder and we have shown how this data disorder affects the location correctness of such frequencies.
Unfortunately Baum have not considered data disorder in his computations.
Weinstein method has not been tested to operate at a data distortion.
What is more, data disorder can have various origins.
On the other hand, if the data are derived from numerical calculations, data disorder is affected by calculations errors such as round-off error and cut-off error.
Unfortunately Baum have not considered data disorder in his computations.
Weinstein method has not been tested to operate at a data distortion.
What is more, data disorder can have various origins.
On the other hand, if the data are derived from numerical calculations, data disorder is affected by calculations errors such as round-off error and cut-off error.
Online since: December 2018
Authors: Brian Gabbitas, Ajit Pal Singh, Fei Yang, Rob Torrens, Leandro Bolzoni
From mechanical property data attained here, it was apparent that annealing in high α-β region gave a much better combination of mechanical properties: yield strength (860-902 MPa), ultimate tensile strength (1060-1084 MPa) and ductility/plastic strain (11.5-13.6%).
The data collected for α-β colony size clearly show that the initial as-extruded microstructure and most of the material given an α-β heat treatment had a similar colony size in the range 48-59 mm on average.
It is well known that a decrease in colony size results in a reduction of the slip length, which enhances YS and ductility [8].
With increasing colony size this phenomena becomes much less predominant and as a consequence a reduction in tensile properties occurs [8].
Other α+β heat treatment (FC from 955°C) showed a reduction of 5.4% compared with as-extruded material.
The data collected for α-β colony size clearly show that the initial as-extruded microstructure and most of the material given an α-β heat treatment had a similar colony size in the range 48-59 mm on average.
It is well known that a decrease in colony size results in a reduction of the slip length, which enhances YS and ductility [8].
With increasing colony size this phenomena becomes much less predominant and as a consequence a reduction in tensile properties occurs [8].
Other α+β heat treatment (FC from 955°C) showed a reduction of 5.4% compared with as-extruded material.
Online since: November 2011
Authors: Xue Peng Liu, Dong Mei Zhao
The experimental data
The data of temperature -viscosity before filtering
From table 1, the viscosity of filter waste lube before 20°C is for 93 x 10-3 Pa • S, 40°C is 26.6 x 10-3, 60°C is 14.1 x 10-3, 70°C is 11.1 x 10-3. 20°C is a benchmark, when the temperature 20 °C rise to 70°C, the viscosity drops by times.
The data of temperature -viscosity after filtering The data of temperature -viscosity after filtering is shown in Fig 2.
Oil viscosity after filtering waste in 20°C is 90 x 10-3 Pa • S, 40°C is 27.5 x 10-3, 60°Cis 15.1 x 10-3, 70°C is 10.5 x 10-3. 20°C is a benchmark, then, when the temperature 20°C rise to 70 °C, the viscosity drops by times Heat oil after filtering in 20°C is 74.2 x 10-3 Pa • S; 40 °C is 26.3 x 10-3; 60°C is 14.3 x 10-3; 70°C is 11 x 10-3 Pa • S. 20°C is a benchmark , when the temperature 20°C rise to 70 °C, the viscosity drops by times Figure 1, figure 2 it is concluded: lubricant viscosity value changes with the rise of temperature and the magnitude of reduction is not the same.
When the temperature is close to 90 °C or so, the viscosity values reduction is small; Temperature over 90 °C, the viscosity value change very slightlyl, Where the temperature rise affects to improve filtering in a small role.
The data of temperature -viscosity after filtering The data of temperature -viscosity after filtering is shown in Fig 2.
Oil viscosity after filtering waste in 20°C is 90 x 10-3 Pa • S, 40°C is 27.5 x 10-3, 60°Cis 15.1 x 10-3, 70°C is 10.5 x 10-3. 20°C is a benchmark, then, when the temperature 20°C rise to 70 °C, the viscosity drops by times Heat oil after filtering in 20°C is 74.2 x 10-3 Pa • S; 40 °C is 26.3 x 10-3; 60°C is 14.3 x 10-3; 70°C is 11 x 10-3 Pa • S. 20°C is a benchmark , when the temperature 20°C rise to 70 °C, the viscosity drops by times Figure 1, figure 2 it is concluded: lubricant viscosity value changes with the rise of temperature and the magnitude of reduction is not the same.
When the temperature is close to 90 °C or so, the viscosity values reduction is small; Temperature over 90 °C, the viscosity value change very slightlyl, Where the temperature rise affects to improve filtering in a small role.
Online since: March 2013
Authors: Yu Lun Chi, Chen Jiang, Yun Fei Mai, Hao Lin Li
Numerous signals can be obtained and measured from the grinding process and the conclusions can be extracted from raw data to evaluate the quality of the workpiece, mostly in the laboratory.
AE measurement has been the most popular approach used to monitor grinding processes for the last two decades with proven advantages such as low cost and easy installation, with no reduction in machine tool stiffness [3].
In the plunge cylindrical grinding, it is most accurately found by experiment for a given setup [4]: (1) where a is distance infeed per workpece revolution, kc is the grinding force coefficient, is the rate of reduction of the workpiece radius and nw is the workpiece rotational speed.
The relations between the power of spindle, grinding forces and AE can be obtained by combining Eqs. 8 and 10 (12) The relation between the AE RMS and the normal grinding force is obtained by combining Eqs. 8 and 11 (13) It means that the curve of AE RMS can be predicted by the spindle’s power data, the normal and (or) tangential grinding forces data.
The AE signal and power signal were filtered and digitized using a QATAQ INSTUMENTS DI-194RS data acquisition card.
AE measurement has been the most popular approach used to monitor grinding processes for the last two decades with proven advantages such as low cost and easy installation, with no reduction in machine tool stiffness [3].
In the plunge cylindrical grinding, it is most accurately found by experiment for a given setup [4]: (1) where a is distance infeed per workpece revolution, kc is the grinding force coefficient, is the rate of reduction of the workpiece radius and nw is the workpiece rotational speed.
The relations between the power of spindle, grinding forces and AE can be obtained by combining Eqs. 8 and 10 (12) The relation between the AE RMS and the normal grinding force is obtained by combining Eqs. 8 and 11 (13) It means that the curve of AE RMS can be predicted by the spindle’s power data, the normal and (or) tangential grinding forces data.
The AE signal and power signal were filtered and digitized using a QATAQ INSTUMENTS DI-194RS data acquisition card.