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Online since: January 2021
Authors: Sofiane Saggai, Ibtissam Belaid, Wafa Bouaka, Amira Benhaddou
The objective of this study is to verify the effects of these partial replacements on concrete properties, their cost, and the CO2 emission reduction in the atmosphere.
Economically, the reduction of 10% in cement saves 5 € per ton and environmentally, it reduces the emission of CO2 from cement industry by 0.5 to 0.7% of total anthropogenic CO2 emissions.
Prepared concrete samples Tests Applied on Concrete Samples The three tests applied to the samples of concrete are: · Ultrasonic Pulse Velocity (UPV) Ultrasonic Pulse Velocity (UPV) tests are very sensitive to homogeneity and density variations and can provide important data for decision making about the conditions of concrete structures [17].
Referring to the figures of Saggai et al. [37], the reduction of 10% in cement saves 5€ per ton.
Riemer, , Emission reduction of greenhouse gases from the cement industry.
Economically, the reduction of 10% in cement saves 5 € per ton and environmentally, it reduces the emission of CO2 from cement industry by 0.5 to 0.7% of total anthropogenic CO2 emissions.
Prepared concrete samples Tests Applied on Concrete Samples The three tests applied to the samples of concrete are: · Ultrasonic Pulse Velocity (UPV) Ultrasonic Pulse Velocity (UPV) tests are very sensitive to homogeneity and density variations and can provide important data for decision making about the conditions of concrete structures [17].
Referring to the figures of Saggai et al. [37], the reduction of 10% in cement saves 5€ per ton.
Riemer, , Emission reduction of greenhouse gases from the cement industry.
Online since: December 2013
Authors: Chu Bei Wang
Adsorption data indicated that active groups of the material had far greater influence on the adsorption capacity than inert functional groups of reduced graphene oxide.
PARGOs were prepared by substitution of graphene oxide (GO) with PCl5 and subsequent thermal reduction.
The substantial shift of the (002) reflection from 0.85 to 0.39 nm after the reduction processing of GO, which confirm the formation of QRGOs from GO.
PARGOs were prepared by substitution of graphene oxide (GO) with PCl5 and subsequent thermal reduction.
The substantial shift of the (002) reflection from 0.85 to 0.39 nm after the reduction processing of GO, which confirm the formation of QRGOs from GO.
Online since: November 2011
Authors: Diego Mantovani, Betül Çelebi, Nicolas Pineault
OST differentiation was confirmed by Alizarin Red S (Sigma) and osteopontin (R&D Systems, Minneapolis, MN, USA) staining (data not shown).
Greater concentration of Col I were not used since they were detrimental to hematopoietic cell growth (data not shown).
In general, the proportion of MK (CD41+) and mature MK (CD41+CD42+) in Col I cultures tended to be lower than those observed in the control cultures (p>0.05, data not shown).
Col I coated surfaces were detrimental to platelet production, with a mean cumulative reduction of 70±10% (n=3) compared to control at day-14 (data not shown).
This reduction could be the results of the adherence of the cells to Col I, which has been previously linked to reduced cell proliferation [2, 5, 17].
Greater concentration of Col I were not used since they were detrimental to hematopoietic cell growth (data not shown).
In general, the proportion of MK (CD41+) and mature MK (CD41+CD42+) in Col I cultures tended to be lower than those observed in the control cultures (p>0.05, data not shown).
Col I coated surfaces were detrimental to platelet production, with a mean cumulative reduction of 70±10% (n=3) compared to control at day-14 (data not shown).
This reduction could be the results of the adherence of the cells to Col I, which has been previously linked to reduced cell proliferation [2, 5, 17].
Online since: January 2014
Authors: C.L Siow, Jaswar Jaswar, Efi Afrizal
To compare the performance, both the CFD codes were tested and the CFD codes performance data were collected from the same computer processors.
Data communication time and burden can be reduced by reducing the number of halo cell and neighbours and then increase the performance of parallel computing.
From the executed data, it can observe that the pressure distribution is typically higher and unstable at the stern part (0.6 < X/(L/2) < 1).
This observation shown that the total time required for the parallel flow programming is not depending on the time used to perform the execution but also need to consider the time required for the data sending and communication.
Hence, these factors were causing the required execution time for this parallel CFD code become longer and it can predict that if the number of thread apply to parallelize the code increase, the overflow time due to communication time and data sending time will be increased.
Data communication time and burden can be reduced by reducing the number of halo cell and neighbours and then increase the performance of parallel computing.
From the executed data, it can observe that the pressure distribution is typically higher and unstable at the stern part (0.6 < X/(L/2) < 1).
This observation shown that the total time required for the parallel flow programming is not depending on the time used to perform the execution but also need to consider the time required for the data sending and communication.
Hence, these factors were causing the required execution time for this parallel CFD code become longer and it can predict that if the number of thread apply to parallelize the code increase, the overflow time due to communication time and data sending time will be increased.
Online since: August 2012
Authors: Li Wen Zhang, Zhou Dao Lu, Min Xia, Jiang Tao Yu
In the first module, the beams, columns and slabs in frame structures are modeled by the finite element software SAP2000, in which the model data are read into ABAQUS depending on the program written in this paper.
In the second module, the position, heated faces and duration of members suffering fire can be specified according to the actual inspection data of members after fire.
In the pre-processing stage, a mass of original data should be inputted by the user that is to be read by calculation stage.
After the finite element calculation, plenty of data are produced, such as displacements, stresses and strains at the element nodes, etc.
Shanghai: Institute of Structural Engineering and Disaster Reduction of Tongji University, 1989,3
In the second module, the position, heated faces and duration of members suffering fire can be specified according to the actual inspection data of members after fire.
In the pre-processing stage, a mass of original data should be inputted by the user that is to be read by calculation stage.
After the finite element calculation, plenty of data are produced, such as displacements, stresses and strains at the element nodes, etc.
Shanghai: Institute of Structural Engineering and Disaster Reduction of Tongji University, 1989,3
Online since: October 2013
Authors: Yan Li
Thus, according to the climate data analysis of Wuhan, the key point of building energy-saving depends on insulation and insulation of building envelope.
Table 1 Climate data for Wuhan (1971−2000) Climate data for Wuhan (1971−2000) Month Jan Feb Mar Apr May Jun Jul Average high °C 8 10.1 14.4 21.4 26.4 29.7 32.6 (°F) -46.4 -50.2 -57.9 -70.5 -79.5 -85.5 -90.7 Average low °C 0.4 2.4 6.6 12.9 18.2 22.3 25.4 (°F) -32.7 -36.3 -43.9 -55.2 -64.8 -72.1 -77.7 Precipitation mm 43.4 58.7 95 131.1 164.2 225 190.3 (inches) -1.709 -2.311 -3.74 -5.161 -6.465 -8.858 -7.492 Sunshine hours 106.5 102.8 115.5 151.2 181.4 179.5 232.1 Month Aug Sep Oct Nov Dec Year Average high °C 32.5 27.9 22.7 16.5 10.8 21.1 (°F) -90.5 -82.2 -72.9 -61.7 -51.4 -70 Average low °C 24.9 19.9 13.9 7.6 2.3 13.1 (°F) -76.8 -67.8 -57 -45.7 -36.1 -55.6 Precipitation mm 111.7 79.7 92 51.8 26 1,269.00 (inches) -4.398 -3.138 -3.622 -2.039 -1.024 -49.961 Sunshine hours 241 176.7 161.2 144.3 136.5 1,928.60 Source: China Meteorological Administration.
China Meteorological Data Sharing Service System.
[4] State Council Information Office of the PRC host a press conference about Energy-saving and emission-reduction in Urban-Rural Development.
China Meteorological Data Sharing Service System. http://cdc.cma.gov.cn/shuju/index3.jsp?
Table 1 Climate data for Wuhan (1971−2000) Climate data for Wuhan (1971−2000) Month Jan Feb Mar Apr May Jun Jul Average high °C 8 10.1 14.4 21.4 26.4 29.7 32.6 (°F) -46.4 -50.2 -57.9 -70.5 -79.5 -85.5 -90.7 Average low °C 0.4 2.4 6.6 12.9 18.2 22.3 25.4 (°F) -32.7 -36.3 -43.9 -55.2 -64.8 -72.1 -77.7 Precipitation mm 43.4 58.7 95 131.1 164.2 225 190.3 (inches) -1.709 -2.311 -3.74 -5.161 -6.465 -8.858 -7.492 Sunshine hours 106.5 102.8 115.5 151.2 181.4 179.5 232.1 Month Aug Sep Oct Nov Dec Year Average high °C 32.5 27.9 22.7 16.5 10.8 21.1 (°F) -90.5 -82.2 -72.9 -61.7 -51.4 -70 Average low °C 24.9 19.9 13.9 7.6 2.3 13.1 (°F) -76.8 -67.8 -57 -45.7 -36.1 -55.6 Precipitation mm 111.7 79.7 92 51.8 26 1,269.00 (inches) -4.398 -3.138 -3.622 -2.039 -1.024 -49.961 Sunshine hours 241 176.7 161.2 144.3 136.5 1,928.60 Source: China Meteorological Administration.
China Meteorological Data Sharing Service System.
[4] State Council Information Office of the PRC host a press conference about Energy-saving and emission-reduction in Urban-Rural Development.
China Meteorological Data Sharing Service System. http://cdc.cma.gov.cn/shuju/index3.jsp?
Online since: August 2016
Authors: Alexandra A.P. Mansur, Herman Sander Mansur, Nadia Sueli Vieira Capanema
They revealed that the powders were HA, in agreement with those published in the literature and with the characteristic peaks consistent with International Centre for Diffraction Data (JCDS 2001) files for HA.
Thermal treatment at 900 ºC also resulted in a reduction of the lattice parameter “a” associated with the removal of chemically adsorbed water without significant change in “c” parameter as described in literature [7,8].
Ceramic modification with Nb promoted an increase in the size of “a” and a reduction in “c” with an overall decrease in the cell volume.
The incorporation of Nb altered the crystalline structure of hydroxyapatite, with an increase on the parameter “a” and a reduction of the “c”.
In addition, it led to a reduction in the average particle size and a higher densification of the powder after sintering.
Thermal treatment at 900 ºC also resulted in a reduction of the lattice parameter “a” associated with the removal of chemically adsorbed water without significant change in “c” parameter as described in literature [7,8].
Ceramic modification with Nb promoted an increase in the size of “a” and a reduction in “c” with an overall decrease in the cell volume.
The incorporation of Nb altered the crystalline structure of hydroxyapatite, with an increase on the parameter “a” and a reduction of the “c”.
In addition, it led to a reduction in the average particle size and a higher densification of the powder after sintering.
Online since: December 2006
Authors: Min Wu, Mao Zeng Xu
The researchers concluded that in situations where
plants adopting the JIT operations could capitalize upon physical plant space square meter reduction,
a JIT system would virtually always be preferable to an EOQ system[3].
However, JIT purchasing is not always successful even if the plants adopting JIT operations can capitalize upon physical plant space reduction[4].
This study shows that it is still possible for the EOQ system to be more cost effective than the JIT purchasing system even when a) the JIT operation can experience physical plant space reduction; and b) an unfavorable assumption is made against the EOQ system.
The data for this case study were collected by interviewing the overseas investment manager, the financial manager, the production manager and the customer service supervisor of the cement division of a supplier.
By expanding the classical EOQ model, conducting a case study and a survey in the RMC industry in Singapore, this study suggests that it is still possible for the EOQ purchasing system to be more cost effective than the JIT purchasing system, even when JIT operation can capitalize on inventory physical plant space reduction.
However, JIT purchasing is not always successful even if the plants adopting JIT operations can capitalize upon physical plant space reduction[4].
This study shows that it is still possible for the EOQ system to be more cost effective than the JIT purchasing system even when a) the JIT operation can experience physical plant space reduction; and b) an unfavorable assumption is made against the EOQ system.
The data for this case study were collected by interviewing the overseas investment manager, the financial manager, the production manager and the customer service supervisor of the cement division of a supplier.
By expanding the classical EOQ model, conducting a case study and a survey in the RMC industry in Singapore, this study suggests that it is still possible for the EOQ purchasing system to be more cost effective than the JIT purchasing system, even when JIT operation can capitalize on inventory physical plant space reduction.
Online since: March 2010
Authors: Gerardo T. Martinez, Marcelo Videa, Genaro Zavala
This implies the reduction of the bit size, and in
consequence, the use of materials with suitable magnetic properties.
Topographical characterization of the electrodeposited particles is presented, as a basis for further magnetic characterization and consideration as a suitable material for magnetic data storage.
For low intensity current pulses, the rate of charge transfer will be in general slow except in certain active places, like scratches, that allow the reduction and nucleation of the Ni atoms.
On the other hand, for the case of high intensity current pulses, the polarization of the electrode may favor the Hydrogen Evolution Reaction (HER) which is known to compete with the Ni reduction [11].
The different distribution of the deposits when a low current pulse or a high current pulse, which involves competition between the Nickel reduction and the HER, suggest a means of controlling the distribution of the nanoparticles in the deposit.
Topographical characterization of the electrodeposited particles is presented, as a basis for further magnetic characterization and consideration as a suitable material for magnetic data storage.
For low intensity current pulses, the rate of charge transfer will be in general slow except in certain active places, like scratches, that allow the reduction and nucleation of the Ni atoms.
On the other hand, for the case of high intensity current pulses, the polarization of the electrode may favor the Hydrogen Evolution Reaction (HER) which is known to compete with the Ni reduction [11].
The different distribution of the deposits when a low current pulse or a high current pulse, which involves competition between the Nickel reduction and the HER, suggest a means of controlling the distribution of the nanoparticles in the deposit.
Online since: August 2013
Authors: Wei Rao, Hong Chun Yan, Ding Guo Li
The reduction of the CoO and FeO content is accompanied by a overall reduction of their grain sizes, from 21.3 nm at Tcal =400℃ to 8.4 nm at Tcal =800℃.
This is a consequence of the reduction of the amount of CoO and FeO phases, which reduces their antiferromagnetic contribution to the hysteresis loops, with a corresponding dominance of the magnetic contribution of the CoFe2O4 phase.
The presence of CoO and FeO caused a shift of the magnetic hysteresis cycles and a reduction of their coercivity and remanence ratio as compared to the bulk CoFe2O4.
New York:Wiley(1994) [11] Powder Diffraction File, Joint Committee on Powder Diffraction Standards, International Centre for Diffraction Data.
This is a consequence of the reduction of the amount of CoO and FeO phases, which reduces their antiferromagnetic contribution to the hysteresis loops, with a corresponding dominance of the magnetic contribution of the CoFe2O4 phase.
The presence of CoO and FeO caused a shift of the magnetic hysteresis cycles and a reduction of their coercivity and remanence ratio as compared to the bulk CoFe2O4.
New York:Wiley(1994) [11] Powder Diffraction File, Joint Committee on Powder Diffraction Standards, International Centre for Diffraction Data.