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Online since: July 2005
Authors: Xiang Guo Liu, Xiao Dong Peng, Wei Dong Xie, Qun Yi Wei
Porosity is detrimental to the mechanical properties of magnesium due to reduction in
tensile strength, ductility and pressure tightness.
Preparation technologies Thermodynamic calculation of melt-leaching-reduction process.
It proved that reducing Sr by melt-leaching-reduction process was feasible.
Fig.2 showed the microstructure of Mg-Sr binary alloy ingots prepared by melt-leaching-reduction process.
Vol.35 (3) (2003), p.32 [7] Baril E, Labelle P, Pekguleryuz M O: JOM Vol. 55(11) (2003), p.34 [8] Forakis P, Richard E, Argo D: TMS Annual Meeting: Magnesium Technology 2002, Seattle, USA, p.49 [9] Argo D, Lefebvre M: TMS Annual Meeting: Magnesium Technology 2003, San Diego, USA, p.15 [10] YE Da-lun, HU Jian-hua: Practical Thermodynamic Data Handbook of Inorganic Substance (Metallurgical Industry Press, China 2002) [11] Langlais J.
Preparation technologies Thermodynamic calculation of melt-leaching-reduction process.
It proved that reducing Sr by melt-leaching-reduction process was feasible.
Fig.2 showed the microstructure of Mg-Sr binary alloy ingots prepared by melt-leaching-reduction process.
Vol.35 (3) (2003), p.32 [7] Baril E, Labelle P, Pekguleryuz M O: JOM Vol. 55(11) (2003), p.34 [8] Forakis P, Richard E, Argo D: TMS Annual Meeting: Magnesium Technology 2002, Seattle, USA, p.49 [9] Argo D, Lefebvre M: TMS Annual Meeting: Magnesium Technology 2003, San Diego, USA, p.15 [10] YE Da-lun, HU Jian-hua: Practical Thermodynamic Data Handbook of Inorganic Substance (Metallurgical Industry Press, China 2002) [11] Langlais J.
Online since: August 2013
Authors: Chun Du, Feng Lan Han, La Ner Wu, Qi Xing Yang
An important operation of the Pidgeon process is the reduction of MgO in dolime by FeSi.
The authors, using data of fluorite consumption and an emission factor, calculated a HF gas generation of 34 kg/ton Mg for one of the fuel scenarios using fluorite of 248 kg/ton Mg to catalyze the MgO reduction.
By the cooling, most of the gaseous F compounds become solid particles and remain in the waste of the MgO reduction.
Mass percent values of slag samples 1 and 2 in Table 1 were used as weights in grams to serve as input data of raw materials for FactSage simulations under conditions of 1 atmosphere pressure and temperature of 900-1400ºC and with excess air.
F vaporization rate, calculated by using F content data presented in Table 2 and Eq. 1, are also listed in Table 2
The authors, using data of fluorite consumption and an emission factor, calculated a HF gas generation of 34 kg/ton Mg for one of the fuel scenarios using fluorite of 248 kg/ton Mg to catalyze the MgO reduction.
By the cooling, most of the gaseous F compounds become solid particles and remain in the waste of the MgO reduction.
Mass percent values of slag samples 1 and 2 in Table 1 were used as weights in grams to serve as input data of raw materials for FactSage simulations under conditions of 1 atmosphere pressure and temperature of 900-1400ºC and with excess air.
F vaporization rate, calculated by using F content data presented in Table 2 and Eq. 1, are also listed in Table 2
Online since: June 2010
Authors: Jian Ping Hu, Jia Guo Zhu
Therefore, leakage energy reduction technique
is primarily aimed at reducing the sub-threshold leakage current.
There are several reduction techniques for leakage dissipation, such as dual threshold CMOS (DTCMOS), multi-threshold CMOS (MTCMOS) power-gating technique, stacking transistor techniques, and variable threshold CMOS (VTCMOS), etc [1, 2].
Pre.decoder A0 A1 A2 A3 A4 RE WE RD31 Sense amplifier RWL WWL Adress decoder Read/Write word-line driver Read data-line and write bit-line drivers Auxiliary clock generator I� I�b CX CXb P1 P2 N1 N2 WD31 RBL31 RBLb31 WBL31 WBLb31 clk P1 P2 N1 N2 WD0 clk RD0 Storage array clk Activeb Active pc TG NC Power-Gating Fig. 6.
The register file consists of a storage-cell array, address decoders, read/write word-line drivers, sense amplifiers, write bit-line and read data-line drivers, and its detail structure is similar to [5].
Summary This paper focuses on leakage reduction of the register file based on improved CAL circuits using MTCMOS schemes.
There are several reduction techniques for leakage dissipation, such as dual threshold CMOS (DTCMOS), multi-threshold CMOS (MTCMOS) power-gating technique, stacking transistor techniques, and variable threshold CMOS (VTCMOS), etc [1, 2].
Pre.decoder A0 A1 A2 A3 A4 RE WE RD31 Sense amplifier RWL WWL Adress decoder Read/Write word-line driver Read data-line and write bit-line drivers Auxiliary clock generator I� I�b CX CXb P1 P2 N1 N2 WD31 RBL31 RBLb31 WBL31 WBLb31 clk P1 P2 N1 N2 WD0 clk RD0 Storage array clk Activeb Active pc TG NC Power-Gating Fig. 6.
The register file consists of a storage-cell array, address decoders, read/write word-line drivers, sense amplifiers, write bit-line and read data-line drivers, and its detail structure is similar to [5].
Summary This paper focuses on leakage reduction of the register file based on improved CAL circuits using MTCMOS schemes.
Online since: September 2011
Authors: Xiu Xia Yuan
Qkcl ≤ 60 kWh/t
20
Qkcl ≥ 68 kWh/t
0
Comparable comprehensive standard electricity consumption of cement
Calculation by thermal measurement or statistical data.
Qks ≤ 80 kWh/t 20 Qks ≥ 100 kWh/t 0 Comparable comprehensive standard energy consumption of cement Calculation by thermal measurement or statistical data.
Qfd ≤ 20 kWh/t (clinker) 8 Qfd > 30 kWh/t 0 Power consumption of raw meal grinding(excluding raw materials crushing) Calculation by statistical data.
Qsf ≤ 19 kWh/t (raw meal) 8 Qsf > 22 kWh/t 0 Power consumption of clinker calcination (including coal powder preparation) Calculation by statistical data.
Qsd ≤ 33 kWh/t (clinker) 8 Qsd > 38 kWh/t 0 Power consumption of cement grinding (excluding package) Calculation by thermal measurement and statistical data.
Qks ≤ 80 kWh/t 20 Qks ≥ 100 kWh/t 0 Comparable comprehensive standard energy consumption of cement Calculation by thermal measurement or statistical data.
Qfd ≤ 20 kWh/t (clinker) 8 Qfd > 30 kWh/t 0 Power consumption of raw meal grinding(excluding raw materials crushing) Calculation by statistical data.
Qsf ≤ 19 kWh/t (raw meal) 8 Qsf > 22 kWh/t 0 Power consumption of clinker calcination (including coal powder preparation) Calculation by statistical data.
Qsd ≤ 33 kWh/t (clinker) 8 Qsd > 38 kWh/t 0 Power consumption of cement grinding (excluding package) Calculation by thermal measurement and statistical data.
Online since: September 2016
Authors: Giuseppe Mancini, Francesco Tondolo, Alessandro Cesetti
Moreover, every corroded specimens was demolished in order to extract the reinforcement for a clean and weight procedure in agreement with of G1-90 Standard [7] and for comparison purpose with theoretical data.
The reduction of bond stresses after the peak load is more evident for the unconfined specimens; in particular, they had a bond reduction rate larger then the confined specimens.
Observing the data from 0 to 5% of corrosion for unconfined specimens it can be assumed that initially bond strength, due to the increase of lateral pressure exerted by the rust along the embedment length, takes advantages from it, but when corrosion level exceeds a certain value (between 2% and 5%) bond strength becomes smaller due to the formation of the first crack along the bar.
The electrochemical corrosion method used a low level of current density so as to obtain reliable data for application to real structures.
However, a sudden reduction is showed when higher level of corrosion is reached and corrosion cracks appear; then only very small bond strength is obtained from that level of corrosion onward.
The reduction of bond stresses after the peak load is more evident for the unconfined specimens; in particular, they had a bond reduction rate larger then the confined specimens.
Observing the data from 0 to 5% of corrosion for unconfined specimens it can be assumed that initially bond strength, due to the increase of lateral pressure exerted by the rust along the embedment length, takes advantages from it, but when corrosion level exceeds a certain value (between 2% and 5%) bond strength becomes smaller due to the formation of the first crack along the bar.
The electrochemical corrosion method used a low level of current density so as to obtain reliable data for application to real structures.
However, a sudden reduction is showed when higher level of corrosion is reached and corrosion cracks appear; then only very small bond strength is obtained from that level of corrosion onward.
Online since: February 2013
Authors: Li Zhang, Shuo Zhang, Yan Miao Ma
Therefore, A weighting method, which is just like a filter, should be adopted to process the obtained data.
In this way, the noise can be shown in data.
The equipment used in this test includes the acoustic measurement sensors, the data processing front-end and PULSE, which is the data processing software.
To make the sound reduction of the enclosure more visual, Tab.1 data are transformed into histogram, which is shown in Fig. 2.
Table.2 data analysis.
In this way, the noise can be shown in data.
The equipment used in this test includes the acoustic measurement sensors, the data processing front-end and PULSE, which is the data processing software.
To make the sound reduction of the enclosure more visual, Tab.1 data are transformed into histogram, which is shown in Fig. 2.
Table.2 data analysis.
Online since: August 2013
Authors: Idiano D’Adamo, Federica Cucchiella, Massimo Gastaldi
Analyzing the project cost data, different groups of installed capacity for each renewable technology have been defined.
A review of the variation of cost data suggests that two size categories (above and below 50 kW) can be defined as shown inTable1.
Analyzing the project cost data, different groups of installed capacity for each renewable technology have been defined.
Under the proposed assumptions and input data, NPV and IRR show positive values in a relevant part of the estimations (Table3).
Recognising that the size facilities can be sources of bias, the data are normalised.
A review of the variation of cost data suggests that two size categories (above and below 50 kW) can be defined as shown inTable1.
Analyzing the project cost data, different groups of installed capacity for each renewable technology have been defined.
Under the proposed assumptions and input data, NPV and IRR show positive values in a relevant part of the estimations (Table3).
Recognising that the size facilities can be sources of bias, the data are normalised.
Online since: June 2010
Authors: Fujio Abe, Ryuta Kasada, Akihiko Kimura, Noriyuki Y. Iwata, Takanari Okuda, Masaki Inoue, Toshiharu Fujisawa, Shigeharu Ukai, Somei Ohnuki
A drastic reduction in the oxygen and nitrogen contents after VHP was strongly affected by
hydrogen gas used as the MA atmosphere.
After this, the compacts were sliced parallel to the uniaxial pressing direction, cold-rolled with a reduction of 40%, and annealed at 1300 °C for 90 min to prepare tensile test specimens.
It should be noted that oxygen, nitrogen, and carbon reductions were confirmed when the powder particles milled in hydrogen were used for the consolidation process.
Thermal analysis data of the MA/ODS-H powder showed a larger weight loss below the degassing temperature, especially in the temperature range from 160 °C to 380 °C, compared to that of the MA/ODS-Ar powder.
On the other hand, concerning the MA/ODS-H steel, impressive size reductions of the ZrO particles (can be seen only on the PPBs) and the oxide inclusions, as well as a highly homogeneous dispersion of the precipitates are more or less dominant compared to the MA/ODS-Al steel.
After this, the compacts were sliced parallel to the uniaxial pressing direction, cold-rolled with a reduction of 40%, and annealed at 1300 °C for 90 min to prepare tensile test specimens.
It should be noted that oxygen, nitrogen, and carbon reductions were confirmed when the powder particles milled in hydrogen were used for the consolidation process.
Thermal analysis data of the MA/ODS-H powder showed a larger weight loss below the degassing temperature, especially in the temperature range from 160 °C to 380 °C, compared to that of the MA/ODS-Ar powder.
On the other hand, concerning the MA/ODS-H steel, impressive size reductions of the ZrO particles (can be seen only on the PPBs) and the oxide inclusions, as well as a highly homogeneous dispersion of the precipitates are more or less dominant compared to the MA/ODS-Al steel.
Online since: February 2014
Authors: Jin Feng Lu, Xiao Lang Li
The actual pressure and deformation measurement data are known.
It can be inferred from Figure 2 and Figure 3 that the data obtained from the proposed method highly matching the actual data.
Details of the operation result are shown in Table 1: Table 1 Maximum pressure response of a bridge Pressure source(Locomotives) Vehicles Type speed (km/h) Bridge lateral deformation Vertical index Derailment coefficient Load reduction rate Bridge longitudinal deformation Vertical index Derailment coefficient Load reduction rate Bus Lorry 100 120 85 115 2.74 2.94 3.12 3.45 2.32 2.49 2.51 2.79 0.45 0.51 0.47 0.56 0.31 0.42 0.39 0.48 2.68 2.92 3.63 4.25 2.25 2.67 2.86 3.26 0.39 0.42 0.54 0.78 0.29 0.35 0.56 0.68 3.3 Simulation results analysis It can be inferred from Table 1: 1)When EG12 travels through the bridges at speed 100km/h and 120km/h, the maximum lateral deformation of the bus is 2.94, the maximum vertical deformation of the bus is 2.49 higher than the value of qualified; the maximum lateral side of the bridge is 2.92, the vertical value is 2.67, higher than the value of qualified. 2) When lorry D58 travels through the bridges
at speed 85 km/h and 115km/h, the maximum lateral flatness index is 3.45, and the maximum vertical flatness index is 2.79 higher than the value of qualified; the maximum lateral side of the lorry is 4.25, the vertical value is 3.26, higher than the value of qualified. 3)When lorry D58 travel through the bridges at speed 85 km/h and 115km/h and the bus travel through the bridges at speed 100km/h and 120km/h, the derailment coefficient of both vehicles is less than 0.78, wheel load reduction is less than 0.58.
It can be inferred from Figure 2 and Figure 3 that the data obtained from the proposed method highly matching the actual data.
Details of the operation result are shown in Table 1: Table 1 Maximum pressure response of a bridge Pressure source(Locomotives) Vehicles Type speed (km/h) Bridge lateral deformation Vertical index Derailment coefficient Load reduction rate Bridge longitudinal deformation Vertical index Derailment coefficient Load reduction rate Bus Lorry 100 120 85 115 2.74 2.94 3.12 3.45 2.32 2.49 2.51 2.79 0.45 0.51 0.47 0.56 0.31 0.42 0.39 0.48 2.68 2.92 3.63 4.25 2.25 2.67 2.86 3.26 0.39 0.42 0.54 0.78 0.29 0.35 0.56 0.68 3.3 Simulation results analysis It can be inferred from Table 1: 1)When EG12 travels through the bridges at speed 100km/h and 120km/h, the maximum lateral deformation of the bus is 2.94, the maximum vertical deformation of the bus is 2.49 higher than the value of qualified; the maximum lateral side of the bridge is 2.92, the vertical value is 2.67, higher than the value of qualified. 2) When lorry D58 travels through the bridges
at speed 85 km/h and 115km/h, the maximum lateral flatness index is 3.45, and the maximum vertical flatness index is 2.79 higher than the value of qualified; the maximum lateral side of the lorry is 4.25, the vertical value is 3.26, higher than the value of qualified. 3)When lorry D58 travel through the bridges at speed 85 km/h and 115km/h and the bus travel through the bridges at speed 100km/h and 120km/h, the derailment coefficient of both vehicles is less than 0.78, wheel load reduction is less than 0.58.
Online since: May 2013
Authors: You Quan Zou
Among the advantages of WMA, the most important one is the reduction of asphalt binder temperature during production which leads to less energy consumption, compared to that of HMA.
Sasobit melts in the asphalt binder at temperature of 85 to 115 oC, causing a marked reduction in the viscosity of the binder.
The manufacturer reports a reduction in mixing and handling temperature of 30 to 50oC.
Dynamic Shearing Rheometer (DSR) MCR101 from Austria Anton Paar Company was used in this study for generating the dynamic data for the bitumens.
The data were generated using Temperature Sweep from -10~135°C and Frequency Sweep covering a range from 0.1 to 100 rad/s with 33 data points. 3 Results and Discussion The viscosity of asphalt binders at high temperature is considered to be an important property.
Sasobit melts in the asphalt binder at temperature of 85 to 115 oC, causing a marked reduction in the viscosity of the binder.
The manufacturer reports a reduction in mixing and handling temperature of 30 to 50oC.
Dynamic Shearing Rheometer (DSR) MCR101 from Austria Anton Paar Company was used in this study for generating the dynamic data for the bitumens.
The data were generated using Temperature Sweep from -10~135°C and Frequency Sweep covering a range from 0.1 to 100 rad/s with 33 data points. 3 Results and Discussion The viscosity of asphalt binders at high temperature is considered to be an important property.