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Online since: January 2006
Authors: Shuzo Otsuka, Yoshihisa Nakata, Takeshi Saito, Hiroki Takahashi, Keishi Tobinai, Torao Kemi
Introduction
Reduction of dioxin emission and life-sustaining of wastes landfill yards have recently made local
governments equipped with melting-solidification plants to recycle domestic wastes [1].
Melting and solidification method is a direct melting, gasification-melting system with a vertical shaft furnace where raw materials are directly melted in a high temperature reduction environment at a temperature from 1700 to 1800 ℃.
However, a slight variation was observed by the sampling month, thus the aggregate quality may be influenced according to regional and seasonal conditions of the domestic wastes and thereby a year round data is needed.
For a wider application of the molten slag fine aggregate to concrete structures, more data should be accumulated.
Melting and solidification method is a direct melting, gasification-melting system with a vertical shaft furnace where raw materials are directly melted in a high temperature reduction environment at a temperature from 1700 to 1800 ℃.
However, a slight variation was observed by the sampling month, thus the aggregate quality may be influenced according to regional and seasonal conditions of the domestic wastes and thereby a year round data is needed.
For a wider application of the molten slag fine aggregate to concrete structures, more data should be accumulated.
Research on Fault Mechanism of Rotor to Stator Rub Nonlinear Vibration in High-Speed Turbo Machinery
Online since: July 2003
Authors: Jin Ji Gao, Zhinong Jiang
Condition monitoring and fault diagnosis on site
3.1 Vibration data acquisition and reduction
In the malfunction condition, excessive vibration did not drop even when the rotor had passed
through the threshold load.
To determine the exact cause of the fault, dynamic data of the rotor vibration on the #3 bearing had been acquired and processed by Bently Nevada instrumentation in the field for detecting trouble
The upward motion of axial center position from the bottom part of the bearing will cause a considerable reduction of stiffness.
To determine the exact cause of the fault, dynamic data of the rotor vibration on the #3 bearing had been acquired and processed by Bently Nevada instrumentation in the field for detecting trouble
The upward motion of axial center position from the bottom part of the bearing will cause a considerable reduction of stiffness.
Online since: May 2016
Authors: Pacharawan Ratanasongtham, Ruangsri Watanesk, Surasak Watanesk, Lalida Shank, Jaroon Jakmunee
The amount of oxygen consumed by this reaction can be determined by measuring the reduction current of oxygen.
Effect of various interferences on response of the fabricated biosensor (5 replications) Interference (1.0 mM) None (AA; 5mM ) Citric acid Glucose NaCl Ethanol % Relative error 0.0 0.0 2.1±0.5 0.0 0.0 The data demonstrate that the test substances have no significant interfering effect on the determination of AA, except glucose.
The data demonstrate that the fabricated biosensor exhibits somewhat good response time and wide linear range compared to other reports.
Lykkesfeldt, Determination of Ascorbic Acid and Dehydroascorbic Acid in Biological Samples by High-Performance Liquid Chromatography Using Subtraction Methods: Reliable Reduction with Tris[2-carboxyethyl]phosphine Hydrochloride, Anal.
Effect of various interferences on response of the fabricated biosensor (5 replications) Interference (1.0 mM) None (AA; 5mM ) Citric acid Glucose NaCl Ethanol % Relative error 0.0 0.0 2.1±0.5 0.0 0.0 The data demonstrate that the test substances have no significant interfering effect on the determination of AA, except glucose.
The data demonstrate that the fabricated biosensor exhibits somewhat good response time and wide linear range compared to other reports.
Lykkesfeldt, Determination of Ascorbic Acid and Dehydroascorbic Acid in Biological Samples by High-Performance Liquid Chromatography Using Subtraction Methods: Reliable Reduction with Tris[2-carboxyethyl]phosphine Hydrochloride, Anal.
Online since: January 2006
Authors: Ennio Bonetti, Marcello Cabibbo, E. Evangelista, C. Scalabroni
A reduction in grain
size has the advantage of improving the strength and toughness of the material at room temperature
and, if the small grain sizes is retained to elevated temperatures, there is also a potential for
achieving good formability and superplastic ductility.
Micro-hardness tests were carried out by applying a load of 100g for 15s, and average data were calculated from a series of 20 independent measurements repeated for each condition.
These data indicate the Sc addition to markedly favour the dispersoids precipitation, which in fact are finely dispersed in the whole material's microstructure.
Therefore, nanometre Al3(Sc1-x,Zrx) dispersoids continuously pin dislocations and cell boundaries with strain resulting in a larger reduction in conductivity in a much more effective way than in Al3Zr containing alloy.
Micro-hardness tests were carried out by applying a load of 100g for 15s, and average data were calculated from a series of 20 independent measurements repeated for each condition.
These data indicate the Sc addition to markedly favour the dispersoids precipitation, which in fact are finely dispersed in the whole material's microstructure.
Therefore, nanometre Al3(Sc1-x,Zrx) dispersoids continuously pin dislocations and cell boundaries with strain resulting in a larger reduction in conductivity in a much more effective way than in Al3Zr containing alloy.
Online since: April 2008
Authors: Sakiko Ukon, Yasuhito Tsujiie, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai
The data for the voltage of 3 kV are cited
from Ref. 23, and those for 4 kV were
obtained in the present work.
A similar phenomenon may occur in tellurite glasses when the poling is performed at a temperature close to Tg, leading to a reduction of the dc electric field induced in the depleted region.
It is naturally expected that the reduction of the induced dc electric field at high poling temperatures is facilitated when the voltage is increased, leading to a decrease in optimum poling temperature with an increase in the voltage.
(1) A least squares fitting of Eq.(1) to the experimental data results in a = 0.789 for 3 kV and a = 0.718 for 4 kV.
A similar phenomenon may occur in tellurite glasses when the poling is performed at a temperature close to Tg, leading to a reduction of the dc electric field induced in the depleted region.
It is naturally expected that the reduction of the induced dc electric field at high poling temperatures is facilitated when the voltage is increased, leading to a decrease in optimum poling temperature with an increase in the voltage.
(1) A least squares fitting of Eq.(1) to the experimental data results in a = 0.789 for 3 kV and a = 0.718 for 4 kV.
Online since: November 2005
Authors: Hitoshi Ishii, Jae Do Kwon, Yong Tak Bae, Sung Jong Choi, Young Suck Chai
Reduction of fatigue life due to fretting damage was also evaluated.
The speed of displacement controlled tension test was set to be 1 mm/min and a 50 mm Compositions, wt. % Ti Al V Fe O N 89 6.362 4.235 0.169 0.186 0.008 Stage 1 Air cooling 1050oC 980oC 2 hr Room temperature Air cooling Stage 2 540oC 4 hr Temperature Fig. 1 Heat treatment process of Ti-6Al-4V alloy (a) Rolled plate (b) 980o C AC, 540 o C AC (c) 1050 o C AC, 540o C AC 80 µm Fig. 2 Optical micrographs of heat treated Ti-6Al-4V alloy Table 1 Chemical compositions of Ti-6Al-4V alloy extensometer was applied to obtain the displacement data.
Microstructure 0.2% proof strength (Mpa) Tensile strength (Mpa) Strain (%) Reduction in area (%) Equiaxed 963 1003 22.5 31.7 Bimodal 982 1047 20.1 30.9 Lamellar 986 1048 5.4 12.3 Assessment of fretting fatigue limit of Ti-6A1-4V alloy.
The frequency of cyclic loading was set to be 1Hz up to 1000 cycles for stable data collection and then the frequency setting was changed into 15Hz thereafter at room temperature.
The speed of displacement controlled tension test was set to be 1 mm/min and a 50 mm Compositions, wt. % Ti Al V Fe O N 89 6.362 4.235 0.169 0.186 0.008 Stage 1 Air cooling 1050oC 980oC 2 hr Room temperature Air cooling Stage 2 540oC 4 hr Temperature Fig. 1 Heat treatment process of Ti-6Al-4V alloy (a) Rolled plate (b) 980o C AC, 540 o C AC (c) 1050 o C AC, 540o C AC 80 µm Fig. 2 Optical micrographs of heat treated Ti-6Al-4V alloy Table 1 Chemical compositions of Ti-6Al-4V alloy extensometer was applied to obtain the displacement data.
Microstructure 0.2% proof strength (Mpa) Tensile strength (Mpa) Strain (%) Reduction in area (%) Equiaxed 963 1003 22.5 31.7 Bimodal 982 1047 20.1 30.9 Lamellar 986 1048 5.4 12.3 Assessment of fretting fatigue limit of Ti-6A1-4V alloy.
The frequency of cyclic loading was set to be 1Hz up to 1000 cycles for stable data collection and then the frequency setting was changed into 15Hz thereafter at room temperature.
Online since: March 2019
Authors: Yoshiro Yamashita, Altan Bolag
SCE but no reduction peak was observed.
It shows that the fluorine introduction on para and meta position of the termini phenyl group shows little difference to UV and CV data.
For the parent compound DP, OTS-treatment of substrate surface also showed a decreased characteristic data compared with the HMDS-treated device [12].
Srivastava, Effect of reduction of trap charge carrier density in organic field effect transistors by surface treatment of dielectric layer, J.
It shows that the fluorine introduction on para and meta position of the termini phenyl group shows little difference to UV and CV data.
For the parent compound DP, OTS-treatment of substrate surface also showed a decreased characteristic data compared with the HMDS-treated device [12].
Srivastava, Effect of reduction of trap charge carrier density in organic field effect transistors by surface treatment of dielectric layer, J.
Online since: March 2016
Authors: Yuan Sheng Yang, Tao Zhang, Yun Teng Liu, Yang De Li, Wei Rong Li, Hong Min Jia, Xiaohui Feng
The reduction ratio was 81:1 as the inner diameter of extruder barrel is 125mm.
The tensile properties come from the average data of three tensile tests for each type of high-purity Mg.
The average value of mass loss data for each type of high-purity Mg come from 3 parallel specimens.
The improved YS of as-drawn Mg seems to be attributed to its refined grains based on the Hall-Petch relationship [23], while the reduction of EL should be responsible by the competitive result of grain refinement and work-hardening caused by the cold deformation, the former benefits to increases the ductility [9] while the latter reduces the EL due to the existence of the high-density dislocation[24].
The tensile properties come from the average data of three tensile tests for each type of high-purity Mg.
The average value of mass loss data for each type of high-purity Mg come from 3 parallel specimens.
The improved YS of as-drawn Mg seems to be attributed to its refined grains based on the Hall-Petch relationship [23], while the reduction of EL should be responsible by the competitive result of grain refinement and work-hardening caused by the cold deformation, the former benefits to increases the ductility [9] while the latter reduces the EL due to the existence of the high-density dislocation[24].
Online since: December 2013
Authors: Shou Jun Huang, Yu Long Ren
Introduction
The report published in the Proceedings of the National Academy of Sciences(CICERO, 2008) pointed out that the global carbon emissions had increased by 13% in the past 10 years, in which the carbon emissions from transportation increased by 25%, and the data will increased by 30%-50% in 2050.
Average transport distance of railway transport is 595km(NBS, 2006), and every kg of saved diesel is equivalent to an emission reduction of 3.06 kg CO2.
The present is 80-95%, and is 6.62%(CEC, 2012), After substituting related data into above formula, following results were obtained, power transmission efficiency was 74.70-88.71%, when electric vehicle charge 1kWh of electricity, power plant should produce 1.13-1.34kWh of power.
Besides introducing energy-saving emission reduction technology in electric power generation, the CO2 emissions of coal-fired power generation side caused by electric vehicle can also be reduced by improving battery charging technology and by reducing power consumption per kilometers.
Average transport distance of railway transport is 595km(NBS, 2006), and every kg of saved diesel is equivalent to an emission reduction of 3.06 kg CO2.
The present is 80-95%, and is 6.62%(CEC, 2012), After substituting related data into above formula, following results were obtained, power transmission efficiency was 74.70-88.71%, when electric vehicle charge 1kWh of electricity, power plant should produce 1.13-1.34kWh of power.
Besides introducing energy-saving emission reduction technology in electric power generation, the CO2 emissions of coal-fired power generation side caused by electric vehicle can also be reduced by improving battery charging technology and by reducing power consumption per kilometers.
Online since: January 2015
Authors: Artem Korsun, Anastasiia Fidrikova, Olga Grishina, Alexey Marichev
However data about one of the main performance indicators of acoustic isolation of mineral wool – coerced dynamic modulus of elasticity Ep are absent.
0.02 10.5 1.58 13 0.0249 14 0.0181 10.7 1.64 12.3 0.0214 10.6 1.82 13.1 0.0257 11 1.2 12.4 0.0198 10.7 1.6 14 0.025 11.1 1.23 12.5 0.0179 11 1.2 15 0.0226 11.2 1.02 13 0.0219 12 0.468 12 0.519 13.2 0.0162 Thickness assay h, [m] 0.018 0.018 0.018 0.018 0.018 0.018 Resonance frequency f, [Hz] 10 40 10 40 10 40 Еd, [N/m²] 14197.8 572456 14197.8 572456 14197.8 572456 Еp, [N/m²] 1.34∙105 6.92∙105 1.34∙105 6.92∙105 1.34∙105 6.92∙105 Calculation of impact noise insulation of flooring 1. without acoustic insulation layer The index of the reduced impact noise level Lnw, [dB], under the floor without a sound-insulating layer with the floor of the roll materials should be determined by the equation (14) [21]: Lnw=Lnw0 - ∆Lnw, (4) where ∆Lnw - index decrease reduced impact noise level, [dB], received in accordance with the published data
The difference 7 [dB] (under a load of 2000 [N/m²]) and 1 [dB] (under a load of 5000 [N/m²]) shows reduction impact noise by the use of basalt wool.
[5] Beranek L.L.Noise Réduction (1960) Mc.Graw-Hill Book Company, pp 369-726
0.02 10.5 1.58 13 0.0249 14 0.0181 10.7 1.64 12.3 0.0214 10.6 1.82 13.1 0.0257 11 1.2 12.4 0.0198 10.7 1.6 14 0.025 11.1 1.23 12.5 0.0179 11 1.2 15 0.0226 11.2 1.02 13 0.0219 12 0.468 12 0.519 13.2 0.0162 Thickness assay h, [m] 0.018 0.018 0.018 0.018 0.018 0.018 Resonance frequency f, [Hz] 10 40 10 40 10 40 Еd, [N/m²] 14197.8 572456 14197.8 572456 14197.8 572456 Еp, [N/m²] 1.34∙105 6.92∙105 1.34∙105 6.92∙105 1.34∙105 6.92∙105 Calculation of impact noise insulation of flooring 1. without acoustic insulation layer The index of the reduced impact noise level Lnw, [dB], under the floor without a sound-insulating layer with the floor of the roll materials should be determined by the equation (14) [21]: Lnw=Lnw0 - ∆Lnw, (4) where ∆Lnw - index decrease reduced impact noise level, [dB], received in accordance with the published data
The difference 7 [dB] (under a load of 2000 [N/m²]) and 1 [dB] (under a load of 5000 [N/m²]) shows reduction impact noise by the use of basalt wool.
[5] Beranek L.L.Noise Réduction (1960) Mc.Graw-Hill Book Company, pp 369-726