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Online since: September 2005
Authors: Dong Nyung Lee
The drawing textures of aluminum, copper, gold, silver, and Cu-7.3% Al bronze wires
are approximated by major <111>+minor <100>, except silver wire, which can have the <100>
texture at extremely high reductions.
Introduction The drawing textures of aluminum (stacking fault energy (SFE): 166 mJ/m2 [1]) [2], copper (SFE: 78 [1]) [3,4], gold (SFE: 45 [1]) [4], silver (SFE: 22 [1]) [5], and Cu-7.3% Al bronze (SFE: <20) [6] wires are approximated by major <111>+minor <100>, except silver wire, which can have the <100> texture at extremely high reductions.
The drawing textures of aluminum [2], copper [3,4], gold [4], silver [5], and Cu-7.3% Al bronze [6] wires are approximated by major <111>+minor <100>, except silver wire, which can have the <100> texture at extremely high reductions.
(left) β-fiber intensity lines of Cu-16%Mn alloys after various rolling reductions [8].
The mobility data of tilt grain boundaries in aluminum [16] show that the average mobility of a <111> tilt boundary is increasingly higher than that of a <100> boundary with increasing temperature.
Introduction The drawing textures of aluminum (stacking fault energy (SFE): 166 mJ/m2 [1]) [2], copper (SFE: 78 [1]) [3,4], gold (SFE: 45 [1]) [4], silver (SFE: 22 [1]) [5], and Cu-7.3% Al bronze (SFE: <20) [6] wires are approximated by major <111>+minor <100>, except silver wire, which can have the <100> texture at extremely high reductions.
The drawing textures of aluminum [2], copper [3,4], gold [4], silver [5], and Cu-7.3% Al bronze [6] wires are approximated by major <111>+minor <100>, except silver wire, which can have the <100> texture at extremely high reductions.
(left) β-fiber intensity lines of Cu-16%Mn alloys after various rolling reductions [8].
The mobility data of tilt grain boundaries in aluminum [16] show that the average mobility of a <111> tilt boundary is increasingly higher than that of a <100> boundary with increasing temperature.
Online since: May 2016
Authors: Rexhep Shaqiri
The results indicate options for reduction of the loses by replacement of old type of transformers and preparation of the MV system for upgrade and change the voltage level from 10 kV to 20 kV.
This paper analyses the reduction of technical losses when the existing 110/10 kV transformers are replaced with 110/20 kV transformers, and the MV grid voltage is changed from 10 to 20kV.
A reduction of network losses would make an important contribution to the EU’s plan to increase energy efficiency in electricity supply.
Total loss of the active power and reactive in the whole power system of Kosovo Reducing the losses in substations “Prishtina 2” and “Prishtina 3” by replacement of the old type of transformers and cables and change the MV voltage level from 10kV to 20kV A study was conducted in order to estimate the option for the reduction of the technical losses when the transformers 110/10 kV are replaced with transformers 110/20 kV, transformers 10/0.4 kV replaced with transformers 20/0.4kV and power distribution cables with section 95 mm2 with new cables with section 150 mm2 in substations “Prishtina 2” and “Prishtina 3”.
References [1] Data from KOSTT –transmission system and market operator; [2] Hadi Saadat, Power System Analysis Third Edition 3rd (third) EDITION.
This paper analyses the reduction of technical losses when the existing 110/10 kV transformers are replaced with 110/20 kV transformers, and the MV grid voltage is changed from 10 to 20kV.
A reduction of network losses would make an important contribution to the EU’s plan to increase energy efficiency in electricity supply.
Total loss of the active power and reactive in the whole power system of Kosovo Reducing the losses in substations “Prishtina 2” and “Prishtina 3” by replacement of the old type of transformers and cables and change the MV voltage level from 10kV to 20kV A study was conducted in order to estimate the option for the reduction of the technical losses when the transformers 110/10 kV are replaced with transformers 110/20 kV, transformers 10/0.4 kV replaced with transformers 20/0.4kV and power distribution cables with section 95 mm2 with new cables with section 150 mm2 in substations “Prishtina 2” and “Prishtina 3”.
References [1] Data from KOSTT –transmission system and market operator; [2] Hadi Saadat, Power System Analysis Third Edition 3rd (third) EDITION.
Online since: August 2013
Authors: Qian Tian, Ting Yao, Fei Guo, Shou Zhi Zhang
The measured shrinkage reduction was up to 55.3% at the age of 180d of drying.
The datas in table 4 show that expansion increases with the increasing of dosage of UMEA replacing of cement.
Furthermore, there is a significant reduction with respect to the reference cement pastes in the drying shrinkage at the end of testing age from 0.304% to 0.136%, which the shrinkage reduction is up to 55.3%, when the amount of UMEA is 10%.
The datas in table 5 indicate that, the cement mortars with UMEA have larger restrained expansion and lower restrained shrinkage than the cement mortar without UMEA.
When the amount of expansive agent is 10%, the measured drying shrinkage reduction was up to 55.3% at the age of 180d, the initial cracking time is delayed by 17d and the crack width is only 1/6 of the reference mixture. 3) When the deformation was restrained, the cement mortars with UMEA have larger restrained expansion and lower restrained shrinkage than the cement mortar without UMEA.
The datas in table 4 show that expansion increases with the increasing of dosage of UMEA replacing of cement.
Furthermore, there is a significant reduction with respect to the reference cement pastes in the drying shrinkage at the end of testing age from 0.304% to 0.136%, which the shrinkage reduction is up to 55.3%, when the amount of UMEA is 10%.
The datas in table 5 indicate that, the cement mortars with UMEA have larger restrained expansion and lower restrained shrinkage than the cement mortar without UMEA.
When the amount of expansive agent is 10%, the measured drying shrinkage reduction was up to 55.3% at the age of 180d, the initial cracking time is delayed by 17d and the crack width is only 1/6 of the reference mixture. 3) When the deformation was restrained, the cement mortars with UMEA have larger restrained expansion and lower restrained shrinkage than the cement mortar without UMEA.
Online since: September 2013
Authors: Pei Cheng Shi, Yang Min Sun
(3)
Eq.3 shows that the ratio of adjacent peaks is equal in the free vibration stage, and the damping coefficient can be obtained if the data of two crests or troughs is known, which is shown in Fig. 3.
In order to make the test data more precise, the data of four adjacent crests is used.
The amplitude reduction rate and average reduction are calculated first.
Fig.3 The data processing of viscous damping test Fig.4 One-dimensional of rubber mounting mechanical model of rubber mounting Dynamic Performance Test of Rubber Mounting.
According to the structure, experiment data and previous researches, a nonlinear mechanical model of rubber mounting is built in this paper, which is shown in Fig.6.
In order to make the test data more precise, the data of four adjacent crests is used.
The amplitude reduction rate and average reduction are calculated first.
Fig.3 The data processing of viscous damping test Fig.4 One-dimensional of rubber mounting mechanical model of rubber mounting Dynamic Performance Test of Rubber Mounting.
According to the structure, experiment data and previous researches, a nonlinear mechanical model of rubber mounting is built in this paper, which is shown in Fig.6.
Online since: August 2006
Authors: Jerry Lord, A. Tony Fry, Paul Grant, P. Whitehead
Meticulous experimental practice, accurate strain
measurement and appropriate data reduction techniques must
be used to avoid large errors and uncertainty in the
measurements.
Fig.2 also presents the same data analysed using 'conventional' depth increments of 127 µm.
Fig. 3 presents the data in the σ3 machining direction, which was highest.
Conventional depth increments have the effect of averaging the data at these levels.
Accurate hole dimensions (both depth and shape) become critical when relieving small levels of strain over shallow depths; the appropriate data reduction technique must also be applied and its limitations appreciated [8].
Fig.2 also presents the same data analysed using 'conventional' depth increments of 127 µm.
Fig. 3 presents the data in the σ3 machining direction, which was highest.
Conventional depth increments have the effect of averaging the data at these levels.
Accurate hole dimensions (both depth and shape) become critical when relieving small levels of strain over shallow depths; the appropriate data reduction technique must also be applied and its limitations appreciated [8].
Online since: May 2012
Authors: Jun Wei, Wei Ya Zhang
In this paper, with a subway station in Beijing as a test location,the measurement and data analysis are carried out, and the schemes put forward for energy conservation and emission reduction in subway air- conditioning system.
Fig.1 Subway air-conditioner room Fig.2 Big fan system Fig.3 Small fan system Fig.4 BAS system Data testing and analysis Data test.
Tab.2 Test project and test point Test site Platform (North) Platform (South) Station hall (North) Station hall (South) Environmental control room (fan) Working area Environmental control room(air conditioning) Table tanks (front Table tanks (back) The bottom of the wind pavilion General control room The entrance of the wind pavilion Security room equipment room —— Test point Temperature and relative humidity We have done the calibration for all the instruments before the test, using formula (1) to find out the measurement deviation of each instrument, and check the measurement of the data and get relatively accurate data
Tab.3 The temperature of chilled water and cooling water Aug. 28 The inlet and outlet temperature of chilled water[˚C] Chilled water temperature difference[˚C] The inlet and outlet temperature of cooling water[˚C] Cooling water temperature [˚C] 6:45 10.7 6.9 3.8 22.8 26.3 3.5 10:30 10.7 6.9 3.8 25.3 29.8 4.5 14:30 11.3 7.4 3.9 20.9 26.4 5.5 16:00 11.4 7.6 3.8 26 31 5 19:00 11.3 7.5 3.8 23.2 25.1 1.9 21:00 11.5 7.3 4.2 25 30 5 According to the data measured, inlet and outlet temperature difference of cooling water system fluctuates much , and temperature difference is small, so the whole system is in the operation situation of high flow and low temperature difference.
Fig.1 Subway air-conditioner room Fig.2 Big fan system Fig.3 Small fan system Fig.4 BAS system Data testing and analysis Data test.
Tab.2 Test project and test point Test site Platform (North) Platform (South) Station hall (North) Station hall (South) Environmental control room (fan) Working area Environmental control room(air conditioning) Table tanks (front Table tanks (back) The bottom of the wind pavilion General control room The entrance of the wind pavilion Security room equipment room —— Test point Temperature and relative humidity We have done the calibration for all the instruments before the test, using formula (1) to find out the measurement deviation of each instrument, and check the measurement of the data and get relatively accurate data
Tab.3 The temperature of chilled water and cooling water Aug. 28 The inlet and outlet temperature of chilled water[˚C] Chilled water temperature difference[˚C] The inlet and outlet temperature of cooling water[˚C] Cooling water temperature [˚C] 6:45 10.7 6.9 3.8 22.8 26.3 3.5 10:30 10.7 6.9 3.8 25.3 29.8 4.5 14:30 11.3 7.4 3.9 20.9 26.4 5.5 16:00 11.4 7.6 3.8 26 31 5 19:00 11.3 7.5 3.8 23.2 25.1 1.9 21:00 11.5 7.3 4.2 25 30 5 According to the data measured, inlet and outlet temperature difference of cooling water system fluctuates much , and temperature difference is small, so the whole system is in the operation situation of high flow and low temperature difference.
Online since: December 2010
Authors: Xu Hong Guo, Yong Xu, Chang Liu
Another advantage of this system is the smaller data amount that will improve the processing real-time ability.
Two algorithms used to compute the workpiece thickness data, slicing algorithm and tessellation algorithm, are discussed in this section.
Hence the thickness data can be expressed as the discrete points along edges corresponding to the processing trace.
The thickness data calculated by the program shown as Figure 5.The calculated data are consistent with the workpiece contour and the thickness value suddenly drop from the 50th slice to the 70th slice as a result of through-hole.
The application example proved the thickness data calculated with two algorithms are correct.
Two algorithms used to compute the workpiece thickness data, slicing algorithm and tessellation algorithm, are discussed in this section.
Hence the thickness data can be expressed as the discrete points along edges corresponding to the processing trace.
The thickness data calculated by the program shown as Figure 5.The calculated data are consistent with the workpiece contour and the thickness value suddenly drop from the 50th slice to the 70th slice as a result of through-hole.
The application example proved the thickness data calculated with two algorithms are correct.
Resettlement Implementation Effect Evaluation Based on Entropy Weight - Principal Component Analysis
Online since: December 2013
Authors: Run Jie Li, Kai Wen Yao, Chen Yang
PCA is a mathematical transformation method, aimed at using the ideas of dimension reduction.
Among them, each principal component is composed of linear combination of original data, and be able to reflect most of the information of original variables.
Before operation supposing there are m evaluation objects (immigrant village), each evaluation object have n evaluation indexes thus making up an initial data matrix X=(xij)m×n The specific steps are as follows: (1) Standardization of original data.
(1) Data nonnegative and translation.
According to the established index system, 12 effect evaluation indexes X1 ~ X12 of five villages were collected respectively as raw data.
Among them, each principal component is composed of linear combination of original data, and be able to reflect most of the information of original variables.
Before operation supposing there are m evaluation objects (immigrant village), each evaluation object have n evaluation indexes thus making up an initial data matrix X=(xij)m×n The specific steps are as follows: (1) Standardization of original data.
(1) Data nonnegative and translation.
According to the established index system, 12 effect evaluation indexes X1 ~ X12 of five villages were collected respectively as raw data.
Online since: November 2019
Authors: Abdulmajid Addali, Naser Ali, Joao Amaral Teixeira
The solution temperature coefficient for water of pH 7 and 9 was selected to be -0.016 pH/oC and -0.029 pH/oC, respectively, based on analysing previous literature data [35-37].
A tabulation of the calculated, measured and published parameters of the liquids in terms of temperature are illustrated in Table 1, and the in-depth explanation of the data can be found in ref [31].
Comparison between the ACA measurements at room temperature and published data was also performed.
A comparison between our findings and Nithyanandam and Palanisamy [33] ACA data, clearly shows the impact of water pH value on the surface wettability.
It was also seen that the ACA data trend with temperature, of the examined surfaces, had higher fluctuation as the water pH value increased.
A tabulation of the calculated, measured and published parameters of the liquids in terms of temperature are illustrated in Table 1, and the in-depth explanation of the data can be found in ref [31].
Comparison between the ACA measurements at room temperature and published data was also performed.
A comparison between our findings and Nithyanandam and Palanisamy [33] ACA data, clearly shows the impact of water pH value on the surface wettability.
It was also seen that the ACA data trend with temperature, of the examined surfaces, had higher fluctuation as the water pH value increased.
Online since: December 2025
Authors: Iolanda Gabriela Craifaleanu, Cornelia Florentina Dobrescu, Claudiu Sorin Dragomir, Emil Sever Georgescu, Aurelian Gruin, Daniela Dobre
When instrumenting ambient vibrations or from micro-seismicity, we collect important building data, including the building’s location, year of construction, and images or photos of the building.
Methodology Certain steps must be taken to obtain "zero" data records for the building's structural dynamic characteristics (Fig. 1): preparation for a technical scheme involving sensors, set up equipment, tests and calibration, recordings of ambient vibrations (micro-seismicity, traffic), data processing [3, 4].
Five steps procedure for ambient vibration measurement Ambient Vibration Testing Supported by Some Technical Data Technical data regarding the structural system.
Horizontal scheme: data flow, station operation, file transmission/reception Fig. 4.
The documents generated from this process form the basis of the Technical Book of Building, while the archived data provide initial records for future reference following a major earthquake.
Methodology Certain steps must be taken to obtain "zero" data records for the building's structural dynamic characteristics (Fig. 1): preparation for a technical scheme involving sensors, set up equipment, tests and calibration, recordings of ambient vibrations (micro-seismicity, traffic), data processing [3, 4].
Five steps procedure for ambient vibration measurement Ambient Vibration Testing Supported by Some Technical Data Technical data regarding the structural system.
Horizontal scheme: data flow, station operation, file transmission/reception Fig. 4.
The documents generated from this process form the basis of the Technical Book of Building, while the archived data provide initial records for future reference following a major earthquake.