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Online since: April 2013
Authors: Nur Azhani Abd Razak, A. Juliawati
Under the hydrogen charged, the reduction of strength and ductility of the steel revealed from the ultimate tensile strength value and percent of elongation were observed as the current density increased.
The embrittling effects may alter the mechanical properties and it appears as a reduction or loss in ductility accompanied by degradation and damage on the surface and internal structure.
The tensile properties, such as yield strength, ultimate tensile strength and ductility (% elongation) were determined from the tensile test, while the data on the maximum load and bend angle were obtained from bend test.
The relative reduction in the ductility and strength are presented in Fig. 5.
It is observed that increasing current density causes a reduction in both maximum load value by 16% and bend ductility (angle) value by only 7%.
The embrittling effects may alter the mechanical properties and it appears as a reduction or loss in ductility accompanied by degradation and damage on the surface and internal structure.
The tensile properties, such as yield strength, ultimate tensile strength and ductility (% elongation) were determined from the tensile test, while the data on the maximum load and bend angle were obtained from bend test.
The relative reduction in the ductility and strength are presented in Fig. 5.
It is observed that increasing current density causes a reduction in both maximum load value by 16% and bend ductility (angle) value by only 7%.
Online since: December 2015
Authors: Mohamad Rusop Mahmood, Mohamad Hafiz Mohd Wahid, Adillah Nurashikin Arshad, Rozana Mohd Dahan, Muhamad Naiman Sarip, Siti Zaleha Sa'ad, Habibah Zulkefle
However, the addition of more than 3 % MgO filler loading caused a reduction in the ferroelectric and dielectric properties of the nanocomposite thin films.
As the percentage of nanofiller loadings increased to 5 % and 7 %, significant reduction in Pr values, 69 mC/m2 and 57 mC/m2, a drop of 22 % and 35 % were observed, respectively.
The agglomerations produced inconsistent surface morphology which led to the reduction of contact area between electrodes.
An abrupt reduction of dielectric constant may be seen as the MgO a loading was increased to 5 % and 7 %.
Prabu, Ferroelectric P(VDF/TrFE) Ultrathin Film for SPM-based Data Storage Devices Solid State Phenomena, 2007. 124-126: p. 303-306
As the percentage of nanofiller loadings increased to 5 % and 7 %, significant reduction in Pr values, 69 mC/m2 and 57 mC/m2, a drop of 22 % and 35 % were observed, respectively.
The agglomerations produced inconsistent surface morphology which led to the reduction of contact area between electrodes.
An abrupt reduction of dielectric constant may be seen as the MgO a loading was increased to 5 % and 7 %.
Prabu, Ferroelectric P(VDF/TrFE) Ultrathin Film for SPM-based Data Storage Devices Solid State Phenomena, 2007. 124-126: p. 303-306
Online since: October 2010
Authors: Shao Wei Wang, Yi Zhang, Hua Wu Liu
Compared with the acidic environment, alkali condition resulted in far faster hydrolysis, caused more reduction of fiber diameter and strength.
Temperature (oC) PH value Time (min) 1 90 5 20 2 90 7 30 3 90 10 40 4 110 5 30 5 110 7 40 6 110 10 20 7 130 5 40 8 130 7 20 9 130 10 30 Data acquisition Hydrothermal process: Samples of PLA fiber were divided into 9 groups, which were treated in different temperatures and PH values with XW-2000 series prototype.
To study the diversification of fineness and its impact on the strength reduction, the fineness was tested and the result is shown in Table 4.
Compared with the 8th sample, though the heating time was only 30 minute, but the strength reduction was100%, which indicated that the temperature and alkaline could affect the capability of the fiber apparently.
The test of between-subjects effects revealed that temperature was significant to the strength reduction of PLA fiber.
Temperature (oC) PH value Time (min) 1 90 5 20 2 90 7 30 3 90 10 40 4 110 5 30 5 110 7 40 6 110 10 20 7 130 5 40 8 130 7 20 9 130 10 30 Data acquisition Hydrothermal process: Samples of PLA fiber were divided into 9 groups, which were treated in different temperatures and PH values with XW-2000 series prototype.
To study the diversification of fineness and its impact on the strength reduction, the fineness was tested and the result is shown in Table 4.
Compared with the 8th sample, though the heating time was only 30 minute, but the strength reduction was100%, which indicated that the temperature and alkaline could affect the capability of the fiber apparently.
The test of between-subjects effects revealed that temperature was significant to the strength reduction of PLA fiber.
Online since: September 2013
Authors: Di Chen Liu, Zhi Hao Ma, Bo Wang
Especially for critical nodes, which have more strict need of real-time for monitoring data [2].
As it is difficult to acquire the actual WAMS data, this paper takes dynamic simulation results instead of the data acquired from the WAMS as the source of sample data.
This paper studies the feature extraction method for response data and the application of feature extraction results.
Data Mining of Electrical Power System Dynamic Response [D].
Ythurusamy, “Data Mining and Knowledge Discovery in Databases,” Comm.ACM, vol.39, no.11, pp.24-27, Nov. 1996
As it is difficult to acquire the actual WAMS data, this paper takes dynamic simulation results instead of the data acquired from the WAMS as the source of sample data.
This paper studies the feature extraction method for response data and the application of feature extraction results.
Data Mining of Electrical Power System Dynamic Response [D].
Ythurusamy, “Data Mining and Knowledge Discovery in Databases,” Comm.ACM, vol.39, no.11, pp.24-27, Nov. 1996
Online since: March 2016
Authors: Guo Liang Xie, Qiang Song Wang, Dong Mei Liu, Xue Cheng Gao, Yang Li, Wei Bin Xie
As the rolling reduction grows, shear bands proliferate significantly and pass through more lamellas of Cu and Ag phases.
Variation in hardness of transverse and longitudinal sections corresponding to rolling reductions is shown in Fig. 4.
As rolling reduction increases, the difference grows larger, suggesting larger anisotropy.
It is worth to note that, for both sections, good consistency is revealed between the experimental data and fitted curves based on equation (1) and (2), demonstrating that Cu/Ag interface strengthening dominates in strain stage of this research, namely 80 % ~ 99 %.
However, some deviations exist between the experimental data and fitted curves when layer spacing surpasses about 150nm, which manifests that the reinforcing effect induced by variation of dislocation density, precipitates, twins, grain boundaries and sub-boundaries in microstructure refinement process is also prominent in contrast with Cu/Ag interface strengthening when rolling strain is lower than 96.5 %.
Variation in hardness of transverse and longitudinal sections corresponding to rolling reductions is shown in Fig. 4.
As rolling reduction increases, the difference grows larger, suggesting larger anisotropy.
It is worth to note that, for both sections, good consistency is revealed between the experimental data and fitted curves based on equation (1) and (2), demonstrating that Cu/Ag interface strengthening dominates in strain stage of this research, namely 80 % ~ 99 %.
However, some deviations exist between the experimental data and fitted curves when layer spacing surpasses about 150nm, which manifests that the reinforcing effect induced by variation of dislocation density, precipitates, twins, grain boundaries and sub-boundaries in microstructure refinement process is also prominent in contrast with Cu/Ag interface strengthening when rolling strain is lower than 96.5 %.
Online since: September 2013
Authors: Yong Feng Li, Jun Fu, Dong Gui Han, Hong Hai Liu, Shu Jian Chen
Cathode Reduction Reaction.
Table. 3 lists some of experimental data including mean of initial surface roughness (MISR), standard deviation of initial surface roughness (SDISR), mean of finished surface roughness (MFSR), and standard deviation of finished surface roughness (SDFSR).
Data of experiments No.
Fig. 6 shows mechanism of the catalytic reduction of nitrate on the cathode [14].
Cathode covered by products of catalytic reduction and metal nitrates hydrates.
Table. 3 lists some of experimental data including mean of initial surface roughness (MISR), standard deviation of initial surface roughness (SDISR), mean of finished surface roughness (MFSR), and standard deviation of finished surface roughness (SDFSR).
Data of experiments No.
Fig. 6 shows mechanism of the catalytic reduction of nitrate on the cathode [14].
Cathode covered by products of catalytic reduction and metal nitrates hydrates.
Online since: March 2018
Authors: Duongruitai Nicomrat, Siriphatr Chamutpong
Therefore, all these data can indicate the benefits of LAB on the indigenous beneficial species in meat fermentation process.
It was possible that No detection of E. coli was detected by coliform in food test kit (Harikul Science CO., LTD, Thailand) during 3 weeks of meat fermentation process (data not shown).
It induced lower humidity indicated by low water activity (aw) that reduces common microorganism growth as reduction of aw from 0.95 to 0.78%.
The results of antagonist effects of nham incolated with LAB starter cultures and added L. monocytogenes showed 50% reduction of L. monocytogenes numbers from 106 to 103 cfu/ mL within 7 days and later the bacteria ceased within 27 days (Fig. 6).
Athough, L. monocytogenes without LAB starter were not total inhibited but reduced by 4 times in 5 days, and with further fermentation the pathogen numbers showed slow reduction until reaching at 102 cfu/ mL within 27 days.
It was possible that No detection of E. coli was detected by coliform in food test kit (Harikul Science CO., LTD, Thailand) during 3 weeks of meat fermentation process (data not shown).
It induced lower humidity indicated by low water activity (aw) that reduces common microorganism growth as reduction of aw from 0.95 to 0.78%.
The results of antagonist effects of nham incolated with LAB starter cultures and added L. monocytogenes showed 50% reduction of L. monocytogenes numbers from 106 to 103 cfu/ mL within 7 days and later the bacteria ceased within 27 days (Fig. 6).
Athough, L. monocytogenes without LAB starter were not total inhibited but reduced by 4 times in 5 days, and with further fermentation the pathogen numbers showed slow reduction until reaching at 102 cfu/ mL within 27 days.
Online since: August 2016
Authors: Kyoung Woo Kim, Kwan Seop Yang, Hye Kyung Shin, Jun Oh Yeon
This study aimed to supply foundational data needed to provide institutional standards on facility noise in apartments.
Introduction As much attention has already been paid to residential environments, studies on inter-floor noise reduction have been underway for some time.
The present study was used as a foundational stage study in order to propose a higher standard of criteria for facility noise and develop a technology for noise reduction.
Thus, it is necessary to provide measures insuring noise reduction.
Conclusions This study aimed to provide foundational data in order to provide institutional standards on facility noise in apartments with regard to kitchen hood and boiler noise.
Introduction As much attention has already been paid to residential environments, studies on inter-floor noise reduction have been underway for some time.
The present study was used as a foundational stage study in order to propose a higher standard of criteria for facility noise and develop a technology for noise reduction.
Thus, it is necessary to provide measures insuring noise reduction.
Conclusions This study aimed to provide foundational data in order to provide institutional standards on facility noise in apartments with regard to kitchen hood and boiler noise.
Online since: March 2006
Authors: Seong Jong Kim, Seok Ki Jang
These results can be used as reference data for ship design.
These results will provide reference data for ship design by determining the optimum protection potential with regards to hydrogen embrittlement and stress corrosion cracking.
The cathodic polarization showed concentrated polarization caused by the dissolved oxygen reduction reaction and activation polarization caused by hydrogen generation.
The current density in the passivity range of the anodic polarization curve was greater than that in the dissolved oxygen reduction reaction range of the cathodic polarization curve.
For the cathodic polarization of 5456 Al alloy, the turning point between concentration polarization due to the oxygen reduction reaction (O2 + 2H2O + 4e → 4OH ) and activation polarization due to hydrogen gas generation (2H2O + 2e → H2 + 2OH ) was approximately -1.70 V (SSCE) in our tests.
These results will provide reference data for ship design by determining the optimum protection potential with regards to hydrogen embrittlement and stress corrosion cracking.
The cathodic polarization showed concentrated polarization caused by the dissolved oxygen reduction reaction and activation polarization caused by hydrogen generation.
The current density in the passivity range of the anodic polarization curve was greater than that in the dissolved oxygen reduction reaction range of the cathodic polarization curve.
For the cathodic polarization of 5456 Al alloy, the turning point between concentration polarization due to the oxygen reduction reaction (O2 + 2H2O + 4e → 4OH ) and activation polarization due to hydrogen gas generation (2H2O + 2e → H2 + 2OH ) was approximately -1.70 V (SSCE) in our tests.
Online since: December 2006
Authors: Chi Fai Cheung, Ka Fu Chu
The targets are reduction of
the level and value of inventory maintained, high speed in transforming them to orders delivered to
customers and flexibility in dealing with demand changes.
Failure in pursuing production lead-time reduction and in the inventory strategy based on customer demands will result in competitive disadvantages leading to high cost and lost market share.
The targets to be attained are reduction of the level and value of inventory maintained, agility in transforming them to orders delivered to customers and flexibility in dealing with demand changes.
The most prevalent technology used is electronic data interchange (EDI) via intranet or other value-added networks.
The supplier then uses the inventory data to put together an anticipated order for them.
Failure in pursuing production lead-time reduction and in the inventory strategy based on customer demands will result in competitive disadvantages leading to high cost and lost market share.
The targets to be attained are reduction of the level and value of inventory maintained, agility in transforming them to orders delivered to customers and flexibility in dealing with demand changes.
The most prevalent technology used is electronic data interchange (EDI) via intranet or other value-added networks.
The supplier then uses the inventory data to put together an anticipated order for them.