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Online since: October 2015
Authors: Tatiana Bugrova, Grigory Mamontov, Anna Savel'eva, Andrey Petrov, Valeriy Dutov
The TGA data are in good agreement with XRD results.
Further increase of calcination temperature to up to 700 and 800 °C leads to reduction of specific surface area to 165 and 151 m2/g respectively.
This fact indicates reduction of amount of small mesopores (2–5 nm) and increase of quantity of wide mesopores (more than 10 nm).
Temperature increase leads to reduction of contribution of mesopores of with sizes of 2–5 nm, which is conformed by reduction in the width of the hysteresis loop in the relative pressure range of 0.45–1.0 p/po on the nitrogen adsorption-desorption isotherms.
Increasing of total pore volume and broadening of pore size with insignificant reduction of specific surface area take place at these temperatures.
Further increase of calcination temperature to up to 700 and 800 °C leads to reduction of specific surface area to 165 and 151 m2/g respectively.
This fact indicates reduction of amount of small mesopores (2–5 nm) and increase of quantity of wide mesopores (more than 10 nm).
Temperature increase leads to reduction of contribution of mesopores of with sizes of 2–5 nm, which is conformed by reduction in the width of the hysteresis loop in the relative pressure range of 0.45–1.0 p/po on the nitrogen adsorption-desorption isotherms.
Increasing of total pore volume and broadening of pore size with insignificant reduction of specific surface area take place at these temperatures.
Online since: May 2019
Authors: Osama Ahmed Mohamed, Maadoum M. Mustafa
ASR can result in significat reduction in concrete compressive strength in the long term [9].
Analysis of the incremental pore size distribution data shows that AAS concrete has a much higher proportion of pore sizes within the mesopore range than OPC cement.
Decreased mesopores which contributed to reduction to reduction in autogenous and drying shrinkage.
Carbonation Alkali Activated Slag Carbonation of the pore solution in concrete and mortar results in reduction of alkalinity, which increases susceptibility of reinforcing steel bars to corrosion.
Carbonation Depth Variation with Silica Modulus for 6% and 8% Na2O The authors argue that carbonation of C-(A)-S-H phase leads to reduction in the molar volume of solids, which explains the increase of the total porosity and average pore size, subsequently reduction in compressive strength.
Analysis of the incremental pore size distribution data shows that AAS concrete has a much higher proportion of pore sizes within the mesopore range than OPC cement.
Decreased mesopores which contributed to reduction to reduction in autogenous and drying shrinkage.
Carbonation Alkali Activated Slag Carbonation of the pore solution in concrete and mortar results in reduction of alkalinity, which increases susceptibility of reinforcing steel bars to corrosion.
Carbonation Depth Variation with Silica Modulus for 6% and 8% Na2O The authors argue that carbonation of C-(A)-S-H phase leads to reduction in the molar volume of solids, which explains the increase of the total porosity and average pore size, subsequently reduction in compressive strength.
Online since: June 2020
Authors: Mochamad Chalid, Yuli Amalia Husnil, Rahma Lailani, Evana Yuanita, Myrna Ariati Mochtar
Tensile strength tests were also conducted to obtain data necessary for exploring the relationship between the thermodynamic aspects of the fiber-matrix interfacial interaction and the mechanical properties of the composites.
The SEM images show that there are no noticeable reduction in the size of the treated fibers as expected.
However the FE-SEM images show that there are no noticeable reduction in the size of the treated fibers which has been published at previous paper [13].
The amorphous regions had more severe degradation where at 662 cm-1 the %transmittance was decreasing by 37% while at 1423 cm-1 the %transmittance reduction was 30%.
The SEM images show that there are no noticeable reduction in the size of the treated fibers as expected.
However the FE-SEM images show that there are no noticeable reduction in the size of the treated fibers which has been published at previous paper [13].
The amorphous regions had more severe degradation where at 662 cm-1 the %transmittance was decreasing by 37% while at 1423 cm-1 the %transmittance reduction was 30%.
Online since: August 2013
Authors: Pan Miao
The power industry plays an important role in either energy consumption or gaseous pollutants emission, which is an important field of energy reduction and building a low-carbon economy in China.
The government should consider study and establish a long-term mechanism of energy conservation, strengthen the legal system, guarantee the completion of targets of energy-saving emission reduction by legal and market mechanisms.
At present, monitoring technology of energy saving of electric power industry is not standardized, and monitoring capacity is short, data of energy saving and emission reduction relies mainly on self-declaration of enterprises, which influences timeliness and accuracy of statistical information to a certain extent, thereby affects correct decision-making and scientific management on energy saving.
Parts of power generation companies lack awareness of energy saving and emission reduction, energy saving and emission reduction is carried out mainly forced by the government executive order for now, rather than voluntarily.
It also makes clear in "The‘12th Five-Year’ comprehensive implementation of energy reduction in Shandong Province " on specific emission reduction targets of transformation of denitrification facilities, shutting down small thermal power.
The government should consider study and establish a long-term mechanism of energy conservation, strengthen the legal system, guarantee the completion of targets of energy-saving emission reduction by legal and market mechanisms.
At present, monitoring technology of energy saving of electric power industry is not standardized, and monitoring capacity is short, data of energy saving and emission reduction relies mainly on self-declaration of enterprises, which influences timeliness and accuracy of statistical information to a certain extent, thereby affects correct decision-making and scientific management on energy saving.
Parts of power generation companies lack awareness of energy saving and emission reduction, energy saving and emission reduction is carried out mainly forced by the government executive order for now, rather than voluntarily.
It also makes clear in "The‘12th Five-Year’ comprehensive implementation of energy reduction in Shandong Province " on specific emission reduction targets of transformation of denitrification facilities, shutting down small thermal power.
Online since: December 2016
Authors: Agnes Iringová
It causes reduction in daylight intensity and direct sunlight in affected living spaces.
At this amount of shading, heat gain reduction from passive solar gains compared to current situation is about to 10%.
Reduction is about 20 - 35% depending on window orientation.
The data cannot be generalized because the results are dependent on particular geometry and dimensions of affected rooms and window optical quality.
The shading reduction would positively affect direct illumination in terms of the active or passive use of collector areas.
At this amount of shading, heat gain reduction from passive solar gains compared to current situation is about to 10%.
Reduction is about 20 - 35% depending on window orientation.
The data cannot be generalized because the results are dependent on particular geometry and dimensions of affected rooms and window optical quality.
The shading reduction would positively affect direct illumination in terms of the active or passive use of collector areas.
Online since: May 2012
Authors: Rui Sheng Hu, Ling Jie Wang, Jia Nan Hu, Ying Liu, Ran Ran Ding
According to the diffraction peaks and literature data [10], it is believed that the single-phase of La2MnNiO6 has been formed in the pure sample.
The peaks at 578 oC can attributed to the further reduction of nickel from a Ni2+ to a Ni0 oxidation state with the destruction of the perovskite structure.
The complete reduction of LaMnO3 reported by Fierro [14] occurs between 900 and 1052 oC with the formation of the following reduction products, La2O3, La (OH)3, MnO and H2O.
Three reduction peaks were decreased to 296 oC, 348 oC and 690 oC for La2MnNiO6/ZrO2, respectively.
The decrease of reduction temperatures indicated that the interaction between La2MnNiO6 and supports made B-O bond more activity and easily reduce [17].The formation of solid solution could promote the reduction of the active phase [18].
The peaks at 578 oC can attributed to the further reduction of nickel from a Ni2+ to a Ni0 oxidation state with the destruction of the perovskite structure.
The complete reduction of LaMnO3 reported by Fierro [14] occurs between 900 and 1052 oC with the formation of the following reduction products, La2O3, La (OH)3, MnO and H2O.
Three reduction peaks were decreased to 296 oC, 348 oC and 690 oC for La2MnNiO6/ZrO2, respectively.
The decrease of reduction temperatures indicated that the interaction between La2MnNiO6 and supports made B-O bond more activity and easily reduce [17].The formation of solid solution could promote the reduction of the active phase [18].
Online since: October 2004
Authors: Ali Gholinia, Marcel A.J. Somers, A.A. Rasmussen, Patrick W. Trimby
Data evaluation was carried out with the Channel5 software package from HKL
Technology A/S.
After noise reduction the area fractions of unindexed (white) regions (Figs. 1c and 1d) were very low, i.e. from 1 to few percent.
White regions (a-d) were not indexed after noise reduction.
Full noise reduction is shown in e and f.
This result is consistent with a reduction of the stacking fault energy by dissolution of Co in Ni [8].
After noise reduction the area fractions of unindexed (white) regions (Figs. 1c and 1d) were very low, i.e. from 1 to few percent.
White regions (a-d) were not indexed after noise reduction.
Full noise reduction is shown in e and f.
This result is consistent with a reduction of the stacking fault energy by dissolution of Co in Ni [8].
Online since: December 2012
Authors: Kun Huang, Li Huang, Jie Song, Lu Chen
United States is one of best countries in demand response application, whose peak reduction from 22,901 MW in 2000 to 32,845 MW in 2010, increased by 42%[5].
Reference [6] predicted that if the United States implemented the demand response programs widely, the reduction in peak demand was equal to the nation's electricity demand growth in the next 10 years.
Assumes that the assessment reliability of demand response has done, and we can understand the reliability level of specific users, and determine the level of load reduction if some kind of demand response programs happens.
Demand Response is better way in load shifting, such as the U.S. peak reduction in 2010 reached 32,845 MW[5], so demand response can be replaced the orderly power consumption partly.
Through the study on the response potential and response time in different load, the evaluation system on reliability of demand response can be established to determine the accurate data standing for the reliability level of load response.
Reference [6] predicted that if the United States implemented the demand response programs widely, the reduction in peak demand was equal to the nation's electricity demand growth in the next 10 years.
Assumes that the assessment reliability of demand response has done, and we can understand the reliability level of specific users, and determine the level of load reduction if some kind of demand response programs happens.
Demand Response is better way in load shifting, such as the U.S. peak reduction in 2010 reached 32,845 MW[5], so demand response can be replaced the orderly power consumption partly.
Through the study on the response potential and response time in different load, the evaluation system on reliability of demand response can be established to determine the accurate data standing for the reliability level of load response.
Online since: January 2011
Authors: Rong Jun Zhao, Xian Bao Cheng, Wei Wei Shangguan
The FTIR spectroscopy results shows that brown-rot fungus did degraded the cellulose and hemicellulose of Chinese fir, explaining the reduction of tensile strength of tracheids.
But, the reduction of obtained tensile strength of brown rotted tracheids relative to the tensile strength of untreated samples is not very remarkable.
Used the method of ANOVA, we found the difference between tensile strength obtained from different treated time is not significant According to the calculational weight loss ratio, the tensile strength of tracheids brown rotted for 10 weeks, the ratio of loss weight reduced 4.25%, and the corresponding tensile strength decreased 9.6%.The measured data results was basically accord with the previous studies that the strength loss achieved to 5%-70% when the weight loss ratio is 1%-18%, the different is that the samples used in this experiment were microsections.
The intensities of carbohydrate bands at 1733 cm-1, 1371 cm-1 (C-H strtching), 1156 cm-1 (C-O-C strtching), 1058 cm-1 (C-O strtching), 1031 cm-1 (C-O strtching) showed the degradation effect of brown-rot fungus to the cellulose and hemicellulose, which explaining the reduction of tensile strength of tracheids.
FTIR spectroscopy results showed brown-rot fungus did degraded the cellulose and hemicelulose of Chinese fir, explaining the reduction of tensile strength of tracheids.
But, the reduction of obtained tensile strength of brown rotted tracheids relative to the tensile strength of untreated samples is not very remarkable.
Used the method of ANOVA, we found the difference between tensile strength obtained from different treated time is not significant According to the calculational weight loss ratio, the tensile strength of tracheids brown rotted for 10 weeks, the ratio of loss weight reduced 4.25%, and the corresponding tensile strength decreased 9.6%.The measured data results was basically accord with the previous studies that the strength loss achieved to 5%-70% when the weight loss ratio is 1%-18%, the different is that the samples used in this experiment were microsections.
The intensities of carbohydrate bands at 1733 cm-1, 1371 cm-1 (C-H strtching), 1156 cm-1 (C-O-C strtching), 1058 cm-1 (C-O strtching), 1031 cm-1 (C-O strtching) showed the degradation effect of brown-rot fungus to the cellulose and hemicellulose, which explaining the reduction of tensile strength of tracheids.
FTIR spectroscopy results showed brown-rot fungus did degraded the cellulose and hemicelulose of Chinese fir, explaining the reduction of tensile strength of tracheids.
Online since: May 2004
Authors: Frank L. Riley, Cemail Aksel, F. Konieczny
Several
measurements (~40) of disc width were averaged, to
obtain the data presented.
These data are presented in the form of depth as a function of porosity in Fig. 5.
Data for spreading as a function of porosity are shown in Fig. 11.
For these reasons zircon might be the preferred additive, in providing longer lasting reduction of void space in the refractory, and increases in glass viscosity.
This is postulated to be primarily the direct result of the reduction of porosity in the refractory through improved particle packing in the green, and fired, states.
These data are presented in the form of depth as a function of porosity in Fig. 5.
Data for spreading as a function of porosity are shown in Fig. 11.
For these reasons zircon might be the preferred additive, in providing longer lasting reduction of void space in the refractory, and increases in glass viscosity.
This is postulated to be primarily the direct result of the reduction of porosity in the refractory through improved particle packing in the green, and fired, states.