Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: December 2014
Authors: Min Jun Kwon, Chang Yeop Lee, Se Won Kim
Multi-staged combustion was demonstrated as a practical NOx reduction method in the late 1970s [1].
Nitrogen element in liquid fuel is converted to nitrogen gas molecule through gasification reaction in reduction condition.
As shown in the data, the peak temperature region is situated around center of the flame, which is around 1200℃.
As shown in graph, this new type of burner has two major advantages in NOx reduction over other conventional burners.
The new type multi-staged liquid burner with partial oxidation shows very good performance on pollutant formation and reduction.
Nitrogen element in liquid fuel is converted to nitrogen gas molecule through gasification reaction in reduction condition.
As shown in the data, the peak temperature region is situated around center of the flame, which is around 1200℃.
As shown in graph, this new type of burner has two major advantages in NOx reduction over other conventional burners.
The new type multi-staged liquid burner with partial oxidation shows very good performance on pollutant formation and reduction.
Online since: September 2013
Authors: Hai Yang Liu, Shu Ai Liu, Lan Ying Zhang
The method proposed proves to be a good reduction of the optical camera imaging.
Introduction The space target optical imaging provides space target detection, identification, tracking, positioning and attitude measurement technologies with necessary simulation data, which has a very important value.
The focal plane size determines imaging window size; the camera pixels correspond to screen pixels; the influence of focal length and FOV on imaging is represented by the angular size of the FOV in imaging simulation; the range of near and far clipping plane simulates the imaging scope of the visible light payload; the loading and rendering of star data is determined by the actual optical camera imaging magnitude.
When the space target cannot form a clear image on the focal plane, an equivalent apparent magnitude is used to simulate the target brightness by calculating the space target photometric quantity, which proves to be a good reduction of the actual camera imaging.
Introduction The space target optical imaging provides space target detection, identification, tracking, positioning and attitude measurement technologies with necessary simulation data, which has a very important value.
The focal plane size determines imaging window size; the camera pixels correspond to screen pixels; the influence of focal length and FOV on imaging is represented by the angular size of the FOV in imaging simulation; the range of near and far clipping plane simulates the imaging scope of the visible light payload; the loading and rendering of star data is determined by the actual optical camera imaging magnitude.
When the space target cannot form a clear image on the focal plane, an equivalent apparent magnitude is used to simulate the target brightness by calculating the space target photometric quantity, which proves to be a good reduction of the actual camera imaging.
Online since: May 2012
Authors: A.I.O. Zaid, G.T.A. Allawi, A. Al-Haj-Ali
The maximum achieved reduction in corrosion rate was 77 % at 40 oC and 0.148 wt % vanadium addition.
The maximum reduction in corrosion rate was approximately 30 % at 0.112 wt % V addition, and the minimum reduction was approximately at 25 oC.
Corrosion rate (mg/mm2.yr) vs. vanadium percent in the specimen in 0.2 M HCl solution at 60oC It is worth noting the scatter of data in the previous figures about ± 30 % .
It is interesting to note that the maximum decrease in corrosion rate occurred around the peritectic point (0.1 wt% V addition on the Al-V phase diagram), this is the wt% addition which is normally used in industrial applications [5].Fig. 5 gives a comparison of the effect of different V wt% addition on the corrosion rate of commercially pure Al grain refined by Ti at the three temperatures 25, 40 and 60 oC from which it can be seen that the maximum reduction in the corrosion rate is approximately 77% at 0.148 wt % addition of V at 40 oC, and the minimum is approximately 7 % at 0.148 wt % addition of V at 60 oC.
The maximum reduction in corrosion rate was approximately 30 % at 0.112 wt % V addition, and the minimum reduction was approximately at 25 oC.
Corrosion rate (mg/mm2.yr) vs. vanadium percent in the specimen in 0.2 M HCl solution at 60oC It is worth noting the scatter of data in the previous figures about ± 30 % .
It is interesting to note that the maximum decrease in corrosion rate occurred around the peritectic point (0.1 wt% V addition on the Al-V phase diagram), this is the wt% addition which is normally used in industrial applications [5].Fig. 5 gives a comparison of the effect of different V wt% addition on the corrosion rate of commercially pure Al grain refined by Ti at the three temperatures 25, 40 and 60 oC from which it can be seen that the maximum reduction in the corrosion rate is approximately 77% at 0.148 wt % addition of V at 40 oC, and the minimum is approximately 7 % at 0.148 wt % addition of V at 60 oC.
Online since: July 2013
Authors: Jian Chun Gong, Yu Rong Zhou, Da Xing Chen, Deng Rong Zhou
The artribary waveform data can be downloaded and updated from a communication interface.
When each clock pulse fs comes, the adder adds the frequency control word k and accumulative phase data outputted by accumulator register, and the result is sent to the data input terminal in accumulator register.
It receives and stores the frequency and phase control word data sent by MCU.
The input data in register will control the frequency and phase sent by MCU when the next clock comes.
Arbitrary waveform data register RWREG receives the arbitrary waveform data sent by upper computer, and output selector MUX can realize the swift of arbitrary waveform and phase switching sine wave.
When each clock pulse fs comes, the adder adds the frequency control word k and accumulative phase data outputted by accumulator register, and the result is sent to the data input terminal in accumulator register.
It receives and stores the frequency and phase control word data sent by MCU.
The input data in register will control the frequency and phase sent by MCU when the next clock comes.
Arbitrary waveform data register RWREG receives the arbitrary waveform data sent by upper computer, and output selector MUX can realize the swift of arbitrary waveform and phase switching sine wave.
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: 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: December 2015
Authors: Mohamad Rusop Mahmood, Mohamad Hafiz Mohd Wahid, Rozana Mohd Dahan, Muhamad Naiman Sarip, Adillah Nurashikin Arshad, 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: June 2018
Authors: Pavlo Saik, Roman Dichkovskiy, Vasyl Lozynskyi, Volodymyr Falshtynskyi
In the second part of the combustion face, reduction reactions are occurred (endothermic reaction), is called reduction zone.
, based on the obtained heat and mass balance calculations data, is carried out as to application of certain blasting interfusion types for effective underground gasification process management.
(10) where: – the average heat flow in 1 m2 of the surface rock walls channel by radiation and convection, J/m2, Sn – the surface of the coal channel, m2, τ – time for coal seam gasification to the coal channel width, s, Qi – the intensity of gasification, kg/s; Q5 – additional heat losses into the environment (unaccounted losses), made on the basis of practical data.
This greatly simplifies the data processing and allows to quickly obtain end-results with a high degree of compliance.
Definition of the Mississippian–Pennsylvanian Boundary in the Lviv–Volyn Coal Basin (Western Ukraine), Based on Palynological Data.
, based on the obtained heat and mass balance calculations data, is carried out as to application of certain blasting interfusion types for effective underground gasification process management.
(10) where: – the average heat flow in 1 m2 of the surface rock walls channel by radiation and convection, J/m2, Sn – the surface of the coal channel, m2, τ – time for coal seam gasification to the coal channel width, s, Qi – the intensity of gasification, kg/s; Q5 – additional heat losses into the environment (unaccounted losses), made on the basis of practical data.
This greatly simplifies the data processing and allows to quickly obtain end-results with a high degree of compliance.
Definition of the Mississippian–Pennsylvanian Boundary in the Lviv–Volyn Coal Basin (Western Ukraine), Based on Palynological Data.
Online since: October 2013
Authors: Mei Zhang, Chao Bin Huang, Yan Zhu, Ru Yi Wu, Qing Shan Li, Yong Zhong, Lin Li
The reduction in area(RA) and tensile strength(TS) were acquired to draw hot ductility curve and hot strength curve.
Moreover, the drop of hot ductility at 900oC is rooted in the reduction of grain boundary strength owing to the precipitation of sulfides.
It can also provide important data reference to the development of new products, optimization of process parameters and etc [5].
Each data point in the experimental process should be verified twice.
If one data point seemed quite inaccurate, then verified repeatedly.
Moreover, the drop of hot ductility at 900oC is rooted in the reduction of grain boundary strength owing to the precipitation of sulfides.
It can also provide important data reference to the development of new products, optimization of process parameters and etc [5].
Each data point in the experimental process should be verified twice.
If one data point seemed quite inaccurate, then verified repeatedly.
Online since: July 2011
Authors: Dan Ying Gao, Han Li
The test data by Kodur [7] indicated that the addition of PP fibers improved fire resistance of concrete.
This paper contributes to the literature by supplying very unique data to understand the compound concrete materials incorporated a cocktail of steel fiber and PP fiber.
The raw data are presented for future reference and proposed equations may be adopted in the design codes.
Based on the test data in this study, and are determined by the least square method as 8´10-8 and 2.41, respectively.
Limited by the test data, the equation is only applicable in a temperature range of 25℃{TTP}8451 to 800℃{TTP}8451 .
This paper contributes to the literature by supplying very unique data to understand the compound concrete materials incorporated a cocktail of steel fiber and PP fiber.
The raw data are presented for future reference and proposed equations may be adopted in the design codes.
Based on the test data in this study, and are determined by the least square method as 8´10-8 and 2.41, respectively.
Limited by the test data, the equation is only applicable in a temperature range of 25℃{TTP}8451 to 800℃{TTP}8451 .