Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: October 2011
Authors: Wen Yong Liu, Xiao Liang Xu, Yong Ye An
This essay is the subject of national eleventh five support schemes: The analysis of key technology on emission reduction and comprehension utilization of solid waste from large iron ore mine (Number:2008BAB32B14).
Introduction This essay is the subject of national eleventh five support schemes: The analysis of key technology on emission reduction and comprehension utilization of solid waste from large iron ore mine (Number:2008BAB32B14).
The size distribution data of iron tailings refer to Table 2 .
Table 6 The working performance of sprayed concrete with iron tailings Sample number Sprayed concrete slump (mm) Initial setting time (min) Rate of resilience (%) 1 70 26 <35 2 130 45 <10 3 115 44 <5 4 70 40 <5 5 95 20 <5 6 70 42 <10 The data in Table 6 indicates that value of sprayed concrete sample slump is less than 130mm and below standard 160 mm, the initial setting time range is in 20 to 45 minutes,the rate of resilience less than 40%.
Test data in Table 5 showed that the the performance of sprayed concrete with iron tailings was better than that of sprayed concrete with natural sand.
Introduction This essay is the subject of national eleventh five support schemes: The analysis of key technology on emission reduction and comprehension utilization of solid waste from large iron ore mine (Number:2008BAB32B14).
The size distribution data of iron tailings refer to Table 2 .
Table 6 The working performance of sprayed concrete with iron tailings Sample number Sprayed concrete slump (mm) Initial setting time (min) Rate of resilience (%) 1 70 26 <35 2 130 45 <10 3 115 44 <5 4 70 40 <5 5 95 20 <5 6 70 42 <10 The data in Table 6 indicates that value of sprayed concrete sample slump is less than 130mm and below standard 160 mm, the initial setting time range is in 20 to 45 minutes,the rate of resilience less than 40%.
Test data in Table 5 showed that the the performance of sprayed concrete with iron tailings was better than that of sprayed concrete with natural sand.
Online since: September 2018
Authors: Andrea de Vasconcelos Ferraz, Emanuel Patrick de Campos
The construction market has at its disposal more and more technical solutions in sealing materials that allow cost reduction and short term execution for construction companies.
Introduction Water-proofed gypsum blocks constitute a construction system that promotes the reduction of load, cost and waste of building materials [1], being therefore an attractive option from an ecological point of view, also because of a low energy demand during the production process [2].
Based on the cited data, it can be concluded that the addition of stearic acid to the gypsum did not afford the formation of water-repellent gypsum according to absorption standard ABNT PN 02:013 – 40 – 009 (5.00 %).
The micrographs shown in Fig. 6 allowed an understanding of the data cited above.
The obtained data can be adjusted by linear regression, revealing accordance with prior studies carried out with ceramic and stone materials [1,3].
Introduction Water-proofed gypsum blocks constitute a construction system that promotes the reduction of load, cost and waste of building materials [1], being therefore an attractive option from an ecological point of view, also because of a low energy demand during the production process [2].
Based on the cited data, it can be concluded that the addition of stearic acid to the gypsum did not afford the formation of water-repellent gypsum according to absorption standard ABNT PN 02:013 – 40 – 009 (5.00 %).
The micrographs shown in Fig. 6 allowed an understanding of the data cited above.
The obtained data can be adjusted by linear regression, revealing accordance with prior studies carried out with ceramic and stone materials [1,3].
Online since: December 2012
Authors: Ju Qiang Cheng, Zhi Xue Liu
It researched the work hardening performance of experimental materials at high temperature tempering state and the effect of different tempering temperatures on the microstructure and properties of cold deformed low carbon bainitic steel, providing test data for the plastic processing of this type steel.
Results and discussions Mechanical properties at different temperature tempering after pre-tension deformation The mechanical properties of low carbon beinaite steel being tempered at at 300°C after hot-rolled were: tensile strength 1105Mpa, Yield strength 890Mpa, percentage elongation 19.5% and percentage reduction of area 59%, respectively.
Data indicated plastic deformation can also improving the strength of the material.
The percentage elongation and reduction of area first decreased and then increased with the tempering temperature raising (Fig.1b), reached its minimum value that were elongation 12.5% and percentage reduction of area 56.2% at 300°C, and it increased gradually when the tempering temperature exceeded 300°C.
The percentage elongation and reduction of area first decreased then increased, and they reached their minimum values of elongation to 12.5% and percentage reduction of area to 56.2% at 300°C.
Results and discussions Mechanical properties at different temperature tempering after pre-tension deformation The mechanical properties of low carbon beinaite steel being tempered at at 300°C after hot-rolled were: tensile strength 1105Mpa, Yield strength 890Mpa, percentage elongation 19.5% and percentage reduction of area 59%, respectively.
Data indicated plastic deformation can also improving the strength of the material.
The percentage elongation and reduction of area first decreased and then increased with the tempering temperature raising (Fig.1b), reached its minimum value that were elongation 12.5% and percentage reduction of area 56.2% at 300°C, and it increased gradually when the tempering temperature exceeded 300°C.
The percentage elongation and reduction of area first decreased then increased, and they reached their minimum values of elongation to 12.5% and percentage reduction of area to 56.2% at 300°C.
Online since: October 2011
Authors: Chang Jun Pan, Ying Qing Guo
For its ability to access otherwise-inaccessible regions, lower cost of operation, improved data quality, and the ability to acquire nearly synoptic observations of processes in the water column, the AUV is widely used in ocean investigation.
The calculated lift and drag aerodynamic forces, based on the data of Fig.3, are specified with respect to this axis.
In the simulation undertaken the wing areas used correspond to W1 followed by a sequences of wings with area reduce by 10% until area is 10% of W1 together with a final reduction of 5%.
The increase in speed u with reducing area is to be expected since there will be an associated reduction in drag.
A reduction in area greater than 20% is likely to produce entry velocity to damage AUV and/or affect a functionality of payload.
The calculated lift and drag aerodynamic forces, based on the data of Fig.3, are specified with respect to this axis.
In the simulation undertaken the wing areas used correspond to W1 followed by a sequences of wings with area reduce by 10% until area is 10% of W1 together with a final reduction of 5%.
The increase in speed u with reducing area is to be expected since there will be an associated reduction in drag.
A reduction in area greater than 20% is likely to produce entry velocity to damage AUV and/or affect a functionality of payload.
Online since: February 2004
Authors: Kenji Higashi, Masahide Kohzu, Tsutomu Tanaka, Hiroyuki Watanabe
Therefore, it is expected that ECAE applied during the phase transformation will be also
beneficial for the reduction of grain size.
In addition, it is found from Fig. 1 (b) and (c) that the grain size tends to reduce with a reduction of operating temperature.
Figure 3 also includes the comparative data at room temperature for Zn-22Al alloy.
The process in the comparative data was water quenched from the eutectoid temperature.
Therefore, it was considered that ECAE, during the phase transformation, was an effective process for a reduction in grain size.
In addition, it is found from Fig. 1 (b) and (c) that the grain size tends to reduce with a reduction of operating temperature.
Figure 3 also includes the comparative data at room temperature for Zn-22Al alloy.
The process in the comparative data was water quenched from the eutectoid temperature.
Therefore, it was considered that ECAE, during the phase transformation, was an effective process for a reduction in grain size.
Online since: September 2013
Authors: Yong Li Cao, Ning Ning An, Na Yao
Low-carbon industrial structure and industrial structure optimization
Rationalization of the industrial structure in the low-carbon economy mode is based on the concept of saving economy, lasting economy and accompanied economy, under the principle to reduction of resources , re-use , recycling , and generating alternative, regarding the use of material energy echelon and closed loop as the path, and by the means of natural resources, reduction , recovery , regeneration, based on enhancing socio-economic development and sustainable use of resources , environment constantly purification, coordination between industry and industry and improve the level of industry association to achieve scientific and rational , long-lasting steady-state growth in the harmonious industrial structure state .
The history of the Chinese carbon emissions and the industrial structure associated According to IEA data , China 's carbon intensity in 1970 is 2560 tons carbon dioxide per million GDP, 1943 tons of carbon dioxide for per million GDP in 1980 , in 1990 it dropped further to 1252 tons of carbon dioxide per million GDP ,further to GDP605 tons of carbon dioxide per million GDP in 2002 .
According to their forecasts, the data in 2015, 2020 and 2025 , respectively 500 , 436 and 375 tons of carbon dioxide per million GDP .
Lack of specialized carbon tax , carbon emission reduction policies has not been strong coordination of fiscal and taxation systems .
Conclusion In order to achieve a low-carbon economy , China must face up to the stage of development and specific national conditions , take the road of "low-carbon development" , the progressive realization of the reduction of carbon emissions in the process of development , and to achieve this goal the most important and fundamental means of upgrading of industrial structure and low-carbon .
The history of the Chinese carbon emissions and the industrial structure associated According to IEA data , China 's carbon intensity in 1970 is 2560 tons carbon dioxide per million GDP, 1943 tons of carbon dioxide for per million GDP in 1980 , in 1990 it dropped further to 1252 tons of carbon dioxide per million GDP ,further to GDP605 tons of carbon dioxide per million GDP in 2002 .
According to their forecasts, the data in 2015, 2020 and 2025 , respectively 500 , 436 and 375 tons of carbon dioxide per million GDP .
Lack of specialized carbon tax , carbon emission reduction policies has not been strong coordination of fiscal and taxation systems .
Conclusion In order to achieve a low-carbon economy , China must face up to the stage of development and specific national conditions , take the road of "low-carbon development" , the progressive realization of the reduction of carbon emissions in the process of development , and to achieve this goal the most important and fundamental means of upgrading of industrial structure and low-carbon .
Online since: December 2013
Authors: Zahra Fakhroueian, Alireza Bahramian, A. Amraei
The reduction in IFT leads to mobilization of the oil by buoyancy forces.
Effect of wettability alteration, IFT reduction, permeability, viscosity, diffusivity, and block dimension was studied for surfactant treatment of a single matrix block by Mohanty et al. [9].
Also they could behave as novel nanosurfactants at the n-heptane/water interface and indicated really reduction of IFT and surface tension in air/water interface.
The maximum error of contact angle data in our experiments is ±0.1°.
Measurements were performed at constant rpm and repeated ten times for each sample and maximum error of the reported S.T and IFT data in our experiments contain ± 0.25- 0.05 mNm-1.
Effect of wettability alteration, IFT reduction, permeability, viscosity, diffusivity, and block dimension was studied for surfactant treatment of a single matrix block by Mohanty et al. [9].
Also they could behave as novel nanosurfactants at the n-heptane/water interface and indicated really reduction of IFT and surface tension in air/water interface.
The maximum error of contact angle data in our experiments is ±0.1°.
Measurements were performed at constant rpm and repeated ten times for each sample and maximum error of the reported S.T and IFT data in our experiments contain ± 0.25- 0.05 mNm-1.
Online since: January 2014
Authors: Dao Sen Niu, Xiao Dong Liu, Shou Qun Sun, Yang Liu
Introduction
The fault control measures included in MCU control system play a huge role in the prevention and reduction of accident risks.
Therefore, the peripheral circuit digital/analog signal fault function generated by simulation and the function of simulating MCU internal devices or data fault should be necessary for the development of the fault control measures verification platform.
Thus, the faults appearing in the internal device or data are simulated, and then that the fault control measures of the controller’s internal components are correctly executed is tested.
Data collection and analysis: online data collection and subsequent analysis and data processing are implemented by computer.
In figure 5, 0x55 was written in register A, so 0x55 was shown in register A, and then the data in register A was changed: 0x55→0x56.
Therefore, the peripheral circuit digital/analog signal fault function generated by simulation and the function of simulating MCU internal devices or data fault should be necessary for the development of the fault control measures verification platform.
Thus, the faults appearing in the internal device or data are simulated, and then that the fault control measures of the controller’s internal components are correctly executed is tested.
Data collection and analysis: online data collection and subsequent analysis and data processing are implemented by computer.
In figure 5, 0x55 was written in register A, so 0x55 was shown in register A, and then the data in register A was changed: 0x55→0x56.
Online since: October 2018
Authors: Inna V. Kolesnikova, Aliya S. Azhibekova, Aikhyn A. Kurmankozhayeva
A further increase in the amount of CaCO3 particles leads to a significant reduction in the barrier, which at the gypsum-to-filler ratio of 70:30 is 6 kT, and at the ratio of 50:50 completely disappears.
Calculating the Interaction Energy The data obtained as a result of studying electrokinetic phenomena in the gypsum solution and in the solution-base contact zone showed that the most effective reduction of the electrokinetic potential is characterized by a gypsum mix filled with 50-70% finely ground mineral calcium carbonate [3].
A further increase in the amount of CaCO3 particles leads to a significant reduction in the barrier, which at the gypsum-to-filler ratio of 70:30 is 6 kT, and at the ratio of 50:50 completely disappears.
It follows from the given data that the stability of aqueous dispersions of gypsum and CaCO3 with particle diameters of less than 60 μm depends significantly on the ratio of components, and their behavior can be explained on the basis of the DLVO theory with the involvement of the concepts of heterocoagulation.
Calculating the Interaction Energy The data obtained as a result of studying electrokinetic phenomena in the gypsum solution and in the solution-base contact zone showed that the most effective reduction of the electrokinetic potential is characterized by a gypsum mix filled with 50-70% finely ground mineral calcium carbonate [3].
A further increase in the amount of CaCO3 particles leads to a significant reduction in the barrier, which at the gypsum-to-filler ratio of 70:30 is 6 kT, and at the ratio of 50:50 completely disappears.
It follows from the given data that the stability of aqueous dispersions of gypsum and CaCO3 with particle diameters of less than 60 μm depends significantly on the ratio of components, and their behavior can be explained on the basis of the DLVO theory with the involvement of the concepts of heterocoagulation.
Online since: May 2015
Authors: Miau Bin Su, Yu Shu Lin, Jun Yang Chen
In solving the debris blockage problem, cleanout of debris so as to recover the drainage capability of watershed and at the same time, use the earth material to form the protecting measures can meet the carbon reduction requirement.
In solving the debris blockage problem, cleanout of debris so as to recover the drainage capability of watershed and at the same time, using the earth material to form the protecting measures can meet the carbon reduction requirement.
Fig. 3 The mixing land improvement engineering method improvement structure, showing the objects to be protected The purpose of this study was to find the optimal balance between engineering economic benefits, and energy savings and carbon reduction in wildcreek cleanout process.
Fig. 5 Hewang mixing land improvement engineering method used to protect against collapsed land Fig. 6 Honghsiang mixing land improvement engineering method used to protect against collapsed land Fig. 7 Hewang and Honghsiang in-situ mixture’s compression strength References [1] Public Construction Commission, Executive Yuan, Public Works Construction Outline and Regulations webpage data (2011) on http://pcces.archnowledge.com/csinew/Default.aspx?
[3] Official website webpage data from the “ISM Method Society,” Japan. (2011) on http://www.ism-method.jp/
In solving the debris blockage problem, cleanout of debris so as to recover the drainage capability of watershed and at the same time, using the earth material to form the protecting measures can meet the carbon reduction requirement.
Fig. 3 The mixing land improvement engineering method improvement structure, showing the objects to be protected The purpose of this study was to find the optimal balance between engineering economic benefits, and energy savings and carbon reduction in wildcreek cleanout process.
Fig. 5 Hewang mixing land improvement engineering method used to protect against collapsed land Fig. 6 Honghsiang mixing land improvement engineering method used to protect against collapsed land Fig. 7 Hewang and Honghsiang in-situ mixture’s compression strength References [1] Public Construction Commission, Executive Yuan, Public Works Construction Outline and Regulations webpage data (2011) on http://pcces.archnowledge.com/csinew/Default.aspx?
[3] Official website webpage data from the “ISM Method Society,” Japan. (2011) on http://www.ism-method.jp/