Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: December 2012
Authors: Li Song, Feng Shan Han
Geological Storage of Carbon Dioxide in Coal Seam Is Effective Method for Environment Protection and Energy Sustainable Development in China
Fengshan Han1, 2,a, Li Song1,b
1Research Center for Numerical Tests on Material Failure, Dalian University, Dalian, 116622,China
2 State Key Laboratory of Coal Resources and Safe Ming, China University of Ming and Technology, Xuzhou, 221116, China
ahanfs@sohu.com, b438506835@qq.com
Keywords: Geological storage,, coal seam, -ECBM, environment protection, energy, sustainable development
Abstract: The reduction of greenhouse gases emission is a growing concern of many countries.
For many years, many scientists analyze data of global weather observation and reveal this fact that global climate has becoming warming and founded that those changes are relevant with atmosphere greenhouse effect. [1-5],If emission in atmosphere is not controlled effectively, global average temperature will continue becoming higher.
CCS is a powful tool along with energy efficiency, fuel switching and renawable energy sources- essential to reducing atomosoheric , many study show that the most effective and least-costly way to reducue levels to avoid climate change is to use all reduction tools, including CCS.
Captured in the atomospher is injected into coal seam, its immediate significance is reduction of greenhouse gases emission in the atomospher, there are also three aspect indirect significance, Fist injection into coal seam can enhanced coal bed methane recovery, coal bed methane is a new clean enegy, develepment and utilization of coal bed methane can make up insufficiency of routine enegy, meanwhile it can reduce possblity of outburst of coal gas in processs of coal ming; Second china is a large county using coal, coal resouce is abundant, Geological Storage of Carbon Dioxide () in coal seam , it can utilize scrap enegy, on the other hand, there are many industrial source of emission such as power plants; Third in the international affair china is confrounted with oppressive pressure for control of emission in atmosphere.
For many years, many scientists analyze data of global weather observation and reveal this fact that global climate has becoming warming and founded that those changes are relevant with atmosphere greenhouse effect. [1-5],If emission in atmosphere is not controlled effectively, global average temperature will continue becoming higher.
CCS is a powful tool along with energy efficiency, fuel switching and renawable energy sources- essential to reducing atomosoheric , many study show that the most effective and least-costly way to reducue levels to avoid climate change is to use all reduction tools, including CCS.
Captured in the atomospher is injected into coal seam, its immediate significance is reduction of greenhouse gases emission in the atomospher, there are also three aspect indirect significance, Fist injection into coal seam can enhanced coal bed methane recovery, coal bed methane is a new clean enegy, develepment and utilization of coal bed methane can make up insufficiency of routine enegy, meanwhile it can reduce possblity of outburst of coal gas in processs of coal ming; Second china is a large county using coal, coal resouce is abundant, Geological Storage of Carbon Dioxide () in coal seam , it can utilize scrap enegy, on the other hand, there are many industrial source of emission such as power plants; Third in the international affair china is confrounted with oppressive pressure for control of emission in atmosphere.
Online since: May 2014
Authors: Dieter M. Herlach, Georg J. Ehlen, Hai Feng Wang
The present work is able to explain the first effect, namely the concentration dependent reduction of velocities.
Results are compared to experimental data.
The lines show data trends.
The computed velocities are too high, but it can be expected that the experimental data will be well described by more accurate models ([3] for Al50Ni50, cf.
Binder, for much helpful discussion and for providing data.
Results are compared to experimental data.
The lines show data trends.
The computed velocities are too high, but it can be expected that the experimental data will be well described by more accurate models ([3] for Al50Ni50, cf.
Binder, for much helpful discussion and for providing data.
Online since: May 2007
Authors: Ying Hong Peng, Da Yong Li, Qun Feng Chang, Xiao Qin Zeng
The experimental results show that adopting the variable blank holder force
technique can remarkably improve the forming performance and decrease the reduction ratio of
thickness from 15.21% to 12.35%.
Signal of pressure sensor and temperature sensor are input into the computer through A/D (Analog/Digital) transfer card, and are compared with the preinstall data. 3).
The temperature sensors collect data from the thermal couples installed on the blank holder and die, respectively.
It can be concluded that adopting the VBHF technique can improve the LDR form 2.5 to 2.8 and decrease the reduction ratio of thickness from 15.21% to 12.35%.
Signal of pressure sensor and temperature sensor are input into the computer through A/D (Analog/Digital) transfer card, and are compared with the preinstall data. 3).
The temperature sensors collect data from the thermal couples installed on the blank holder and die, respectively.
It can be concluded that adopting the VBHF technique can improve the LDR form 2.5 to 2.8 and decrease the reduction ratio of thickness from 15.21% to 12.35%.
Online since: July 2006
Authors: Nicolas Kamp, A. Sullivan, Joseph D. Robson
The reduction in nugget strength
after PWHT is particularly marked and is due to replacement of fine GP zones formed on post
weld natural ageing by coarse overaged precipitates.
Introduction The aerospace industry is constantly demanding weight reductions through materials and process development.
For these experiments the beam was shifted down to give a probe size of 1.3mm x 0.7mm with a camera length of 1m, and data aquisition times in the range of 3 to 7 minutes.
The hardness of the parent condition exhibits a reduction from the TAF condition to the PWHT T7 condition by an average of 10 VHN.
This reduction in hardness is due to the replacement of a fine precipitate distribution within the grains (and probably GP zones) by a coarse particle distribution.
Introduction The aerospace industry is constantly demanding weight reductions through materials and process development.
For these experiments the beam was shifted down to give a probe size of 1.3mm x 0.7mm with a camera length of 1m, and data aquisition times in the range of 3 to 7 minutes.
The hardness of the parent condition exhibits a reduction from the TAF condition to the PWHT T7 condition by an average of 10 VHN.
This reduction in hardness is due to the replacement of a fine precipitate distribution within the grains (and probably GP zones) by a coarse particle distribution.
Online since: June 2014
Authors: Yong Jun Zhang, Jing Tao Han, De Ming Yao, Man Ying Chen
Substrate sample tested on cold-rolled mill of University of Science and Technology Beijing, after the cold rolling thickness is 1mm, the total cold-rolled rolling reduction rate is 66.7%.
Annealed samples with LEICA VMHT30M type Vickers hardness tester for microscopic hardness testing, load force selection 50 gf, loading time is 10s, then, based on data draws hardness-time profile.
Thus, results of microstructure observation and hardness test is consistent, can be determined the reduction rate of 66.7% refractory weathering steel recrystallization temperature is 650˚C.
The reduction rate of 66.7% refractory weathering steel recrystallization temperature is 650˚C, the start recrystallization temperature is about 600˚C, the end recrystallization temperature is about 680˚C
(3) The reduction rate of 66.7% refractory weathering steel at 700˚C recrystallization annealing time is 1h, the plasticity and strength to get a good match with excellent comprehensive mechanical properties.
Annealed samples with LEICA VMHT30M type Vickers hardness tester for microscopic hardness testing, load force selection 50 gf, loading time is 10s, then, based on data draws hardness-time profile.
Thus, results of microstructure observation and hardness test is consistent, can be determined the reduction rate of 66.7% refractory weathering steel recrystallization temperature is 650˚C.
The reduction rate of 66.7% refractory weathering steel recrystallization temperature is 650˚C, the start recrystallization temperature is about 600˚C, the end recrystallization temperature is about 680˚C
(3) The reduction rate of 66.7% refractory weathering steel at 700˚C recrystallization annealing time is 1h, the plasticity and strength to get a good match with excellent comprehensive mechanical properties.
Online since: October 2011
Authors: Guang Chuan Liang, Xiu Qin Ou, Li Wang, Xiao Fei Jie
LiFePO4/C composite cathode material prepared by carbothermal reduction method was coated by metal oxide MnO2, Al2O3, CuO, respectively, by a chemical precipitation method.
But the carbon coating generated from glucose via carbothermal reduction method in our previous study could not form a complete coating network on LiFePO4 particles.
Experimental Carbon coated LiFePO4 composite materials were prepared by carbothermal reduction method.
Table 1 lists the lattice parameters of all the samples, which are very close to the reference data (a=0.6019 nm, b=1.0347 nm, c=0.4704 nm, V=0.2930 nm3).
Conclusions LiFePO4/C composite cathode material prepared by carbothermal reduction method was coated by metal oxide MnO2, Al2O3, CuO, respectively, by a chemical precipitation method.
But the carbon coating generated from glucose via carbothermal reduction method in our previous study could not form a complete coating network on LiFePO4 particles.
Experimental Carbon coated LiFePO4 composite materials were prepared by carbothermal reduction method.
Table 1 lists the lattice parameters of all the samples, which are very close to the reference data (a=0.6019 nm, b=1.0347 nm, c=0.4704 nm, V=0.2930 nm3).
Conclusions LiFePO4/C composite cathode material prepared by carbothermal reduction method was coated by metal oxide MnO2, Al2O3, CuO, respectively, by a chemical precipitation method.
Online since: November 2016
Authors: A.E.M. Paiva, Edson Jansen Pedrosa Miranda Jr.
A scanning electron microscopy analysis revealed a reduction in voids as the waste glass content increased from 0% to 10%.
Introduction According to data from CEMPRE (a Brazilian association of private companies committed to recycling), Brazil produces about 980,000 tons of glass packaging per year, using about 45% of recycled raw material in the form of shards.
The reduction of slump in response to increasing waste glass percentage was attributed mainly to the high percentage of fines in the flat glass powder, i.e., 6.74%, and the angular and lamellar geometry of its particles.
However, in Figure 3 (d) – w/c ratio of 0.58 and 0% of glass content – note that the microstructure showed no reduction of void content with the increase of waste glass percentage from 0% to 10% or with the reduction in w/c ratio.
The SEM micrographs show the main phases of Portland cement concrete, the reduction in void content resulting from the increase of waste glass from 0% to 10%, and the increase in voids in response to increasing w/c ratio.
Introduction According to data from CEMPRE (a Brazilian association of private companies committed to recycling), Brazil produces about 980,000 tons of glass packaging per year, using about 45% of recycled raw material in the form of shards.
The reduction of slump in response to increasing waste glass percentage was attributed mainly to the high percentage of fines in the flat glass powder, i.e., 6.74%, and the angular and lamellar geometry of its particles.
However, in Figure 3 (d) – w/c ratio of 0.58 and 0% of glass content – note that the microstructure showed no reduction of void content with the increase of waste glass percentage from 0% to 10% or with the reduction in w/c ratio.
The SEM micrographs show the main phases of Portland cement concrete, the reduction in void content resulting from the increase of waste glass from 0% to 10%, and the increase in voids in response to increasing w/c ratio.
Online since: August 2013
Authors: Xue Song Li, Xin Yu Tao, Su Li Zhang
Due to needs of data analysis and collation, the roof of College of Architecture and Urban Planning of Huazhong University of Science and Technology(HUST) will be arranged as the designated test point of background meteorological data during testing.
The meteorological data released by Wuhan Weather Station is shown in Table 2.
Data processing and analysis Data collation method: According to day temperature change laws, it is assumed that temperature change trends of the background point (test point at the roof of College of Architecture and Urban Planning of HUST: designated point) and the point to be tested (all points on the tested route) are consistent, then based on the formula: (1) (2) 3.2 Data collation and analysis Analysis and comparison of data in the morning between July 22 and 23.As shown in Figure 2: The temperature curves in P1 section are generally overlapped.
According to the collected test data, this section is within the range of influence of the South Lake area.
The sorted data and charts show that the heat island phenomenon occurs at noon and in the evening, and is most obvious at nighttime , and the heat island intensity is higher than 1℃.
The meteorological data released by Wuhan Weather Station is shown in Table 2.
Data processing and analysis Data collation method: According to day temperature change laws, it is assumed that temperature change trends of the background point (test point at the roof of College of Architecture and Urban Planning of HUST: designated point) and the point to be tested (all points on the tested route) are consistent, then based on the formula: (1) (2) 3.2 Data collation and analysis Analysis and comparison of data in the morning between July 22 and 23.As shown in Figure 2: The temperature curves in P1 section are generally overlapped.
According to the collected test data, this section is within the range of influence of the South Lake area.
The sorted data and charts show that the heat island phenomenon occurs at noon and in the evening, and is most obvious at nighttime , and the heat island intensity is higher than 1℃.
Online since: October 2025
Authors: Samson Olalekan Odeyemi, Mukaila Abiola Anifowose, Kabiru Mustapha, Opeyemi S. Olabisi
The concrete gets less workable (stiff) as the proportion increases, according to the workability data.
The design was based on import data design using Design-Expert 13.0 version.
In Fig. 4 data, the consistency, or the amount of water needed to create a paste of 20% WPPA by weight of PLC is the highest, while the consistency of the control is the lowest.
The delay in the setting time could be attributed to the reduction in surface area of the cement and reduction in the quantity of tricalcium silicate in the WPPA-blended cement paste [36, 39].
Additionally, the reduction of the strength with increased WPPA is due to the high replacement of PLC by weight of WPPA, which causes reduction of hydration reaction [22, 28, 33, 49].
The design was based on import data design using Design-Expert 13.0 version.
In Fig. 4 data, the consistency, or the amount of water needed to create a paste of 20% WPPA by weight of PLC is the highest, while the consistency of the control is the lowest.
The delay in the setting time could be attributed to the reduction in surface area of the cement and reduction in the quantity of tricalcium silicate in the WPPA-blended cement paste [36, 39].
Additionally, the reduction of the strength with increased WPPA is due to the high replacement of PLC by weight of WPPA, which causes reduction of hydration reaction [22, 28, 33, 49].
Online since: April 2011
Authors: Huai Qing Chen, Xue Ling He, Ying Qiang Guo, Jiang Wu
The cell-mediated matrix mineralization in terminally differentiated cultures by Alizarin Red S assay revealed a reduction in the number and area of mineralizing nodules, even mineralization calcium concentration in BMSCs cultures after titanium particles treatment.
Collectively, the data suggest that different size titanium particles alters osteogenic differentiation in BMSCs cultures during lineage progression and provide further insight into wear debris-induced reduced bone formation.
Data are presented as mean ± SD.
The cell-mediated matrix mineralization in terminally differentiated cultures by Alizarin Red S assay revealed a reduction in the number and area of mineralizing nodules, even mineralization calcium concentration in rBMSCs cultures after titanium particles treatment (Table 3).
Collectively, the data suggest that different size titanium particles alters osteogenic differentiation in BMSCs cultures during lineage progression and provide further insight into wear debris-induced reduced bone formation.
Data are presented as mean ± SD.
The cell-mediated matrix mineralization in terminally differentiated cultures by Alizarin Red S assay revealed a reduction in the number and area of mineralizing nodules, even mineralization calcium concentration in rBMSCs cultures after titanium particles treatment (Table 3).