Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: February 2011
Authors: Yong Chun Guo, Jian Ping Li, Jin Shan Li, Ping Wang
The rare earth elements don’t form independent phases in ceramic coating but affect the relative proportion of constitution phases, resulting in the reduction of intermixed magnesium phase and the increase of the MgO and MgSiO3 phases.
Therefore the growth process of ceramic coating accords with linear regularity with data fitting software CurveExpert1.3 in the anodic oxidation stage.
In the micro-arc oxidation stage, data fitting software CurveExpert1.3 shows that the growth process of ceramic coating changes to parabolic regularity.
The growth process of ceramic coating still accords with parabolic regularity with data fitting software CurveExpert1.3 in the arc light stage.
The rare earth elements don’t form independent phases in ceramic coating but affect the relative proportion of constitution phases, resulting in the reduction of intermixed magnesium phase and the increase of the MgO and MgSiO3 phases.
Therefore the growth process of ceramic coating accords with linear regularity with data fitting software CurveExpert1.3 in the anodic oxidation stage.
In the micro-arc oxidation stage, data fitting software CurveExpert1.3 shows that the growth process of ceramic coating changes to parabolic regularity.
The growth process of ceramic coating still accords with parabolic regularity with data fitting software CurveExpert1.3 in the arc light stage.
The rare earth elements don’t form independent phases in ceramic coating but affect the relative proportion of constitution phases, resulting in the reduction of intermixed magnesium phase and the increase of the MgO and MgSiO3 phases.
Online since: September 2013
Authors: Xian Quan Han, Yong Tan, Cheng Xing
Measuring and Data Processing
Inoceans,rivers and lakes,Multi-beam bathymetry system is widely used in surveying and mapping.
It not only realizesthe measuring data automation and rendering underwater color measurement real-time,but alsoprovides intuitive measured underwater form byusing the multi-beam acoustic signal[4].Under this background,it is particularly important to monitor and manage the Yangtze Riverdigitally.Multi-beam measurements use the PDS2000 measurement software,whichcollects DGPS position data synchronously,water depth data,attitude compensation data and gyrocompass data[5].In order to improve the accuracy of the depthdata,it is necessary to eliminate the falseinformation and to put the information of tidal levelinto the CARIS software which can correctthe water level of the depth dataautomatically[6].
Data preprocessing and Mapping are believed to compose the data processing[7].Preprocessing includesnot only positioning data processing,sound velocity profile data processing,tidal level data processing,attitude data processing and depth of data processing but alsothe data editing,noise removal and merging whichis completed mainly by CARIS software.Mappingis the management of gridding the depth data obtained after preprocessing which generates digital terrain models (DTM) and theunderwatermap.It is mainly done by specialized mapping software Terrain model[8].The detailed flow is shown in Fig.3.
[3] Demkowicz.HierarchicalSpline Technique Application For Real Time 3D Displaying of Seafloor Using MultibeamSonar Data[J].The Journal of the Acoustical Society of America, 2008, 123:3626
[4] LanSun,Yan-chun Liu and Ming-sanLi.Technique on BuildingDEM of Bathymetry Using Multi-beam Data[J].Journal ofHydrographic Surveying and Charting,2009,29 (1):39-41
It not only realizesthe measuring data automation and rendering underwater color measurement real-time,but alsoprovides intuitive measured underwater form byusing the multi-beam acoustic signal[4].Under this background,it is particularly important to monitor and manage the Yangtze Riverdigitally.Multi-beam measurements use the PDS2000 measurement software,whichcollects DGPS position data synchronously,water depth data,attitude compensation data and gyrocompass data[5].In order to improve the accuracy of the depthdata,it is necessary to eliminate the falseinformation and to put the information of tidal levelinto the CARIS software which can correctthe water level of the depth dataautomatically[6].
Data preprocessing and Mapping are believed to compose the data processing[7].Preprocessing includesnot only positioning data processing,sound velocity profile data processing,tidal level data processing,attitude data processing and depth of data processing but alsothe data editing,noise removal and merging whichis completed mainly by CARIS software.Mappingis the management of gridding the depth data obtained after preprocessing which generates digital terrain models (DTM) and theunderwatermap.It is mainly done by specialized mapping software Terrain model[8].The detailed flow is shown in Fig.3.
[3] Demkowicz.HierarchicalSpline Technique Application For Real Time 3D Displaying of Seafloor Using MultibeamSonar Data[J].The Journal of the Acoustical Society of America, 2008, 123:3626
[4] LanSun,Yan-chun Liu and Ming-sanLi.Technique on BuildingDEM of Bathymetry Using Multi-beam Data[J].Journal ofHydrographic Surveying and Charting,2009,29 (1):39-41
Online since: December 2010
Authors: Heng Lin Lv, Yong Cheng, Yong Li, Yu Long, Jie Yang, Fu Ping Jia
Test results demonstrated that the water requirement of normal consistency and the setting times(initial and final) decreased obviously as the replacement level of limestone powder increased and the extent of reduction was noticeable with the increase of SSB of limestone powder.
Data represent the average values obtained from 3 flexural strength tests and 6 compressive strength tests.
In limestone cements with 350m2/kg SSB, there is a reduction of water requirement of normal consistency from 28% to 27.4% and the water requirement indicates linearly when the amount of limestone is from 5% to 35%.
The ground limestone has a positive effect on the consistency, they play the role of water reduction and plasticizer and the degree of water reduction is relative to the amount and SSB of limestone: the more amount and more SSB, the more role of water reduction.
Data represent the average values obtained from 3 flexural strength tests and 6 compressive strength tests.
In limestone cements with 350m2/kg SSB, there is a reduction of water requirement of normal consistency from 28% to 27.4% and the water requirement indicates linearly when the amount of limestone is from 5% to 35%.
The ground limestone has a positive effect on the consistency, they play the role of water reduction and plasticizer and the degree of water reduction is relative to the amount and SSB of limestone: the more amount and more SSB, the more role of water reduction.
Online since: April 2022
Authors: Hidayat Panuntun, Anindya Sricandra Prasidya, Gani Mahendra
Continuous GNSS measurements can provide high temporal resolution data.
InSAR data offer an advantage over GNSS measurements.
Methods Data.
However, a specific data preprocessing approach or a big data processing method is required to fully utilize the SAR images captured by Sentinel-1 satellite.
In this way, three-dimensional displacement data observed by GNSS data is required.
InSAR data offer an advantage over GNSS measurements.
Methods Data.
However, a specific data preprocessing approach or a big data processing method is required to fully utilize the SAR images captured by Sentinel-1 satellite.
In this way, three-dimensional displacement data observed by GNSS data is required.
Online since: October 2007
Authors: W.M. Daoush
Box 87, Helwan, Cairo, Egypt
E-mail: waleeddaush@cmrdi.sci.eg
Abstract
Nano sized Co-20wt%Ni composite powder was synthesized by electroless chemical reduction method using
metallic salt precursors and hypophosphite as a reducing agent in alkaline tartarate bath as a complexing agent.
In recent years a liquid phase electroless deposition process wherein the metal powder ( in composite or alloyed form)with a microcrystalline metallic powders with a nano-sized scale through the autocatalytic liquid phase reduction of the cations of the metals.
From the phosphorus content determinations by EDAX as shown in Fig.1b and by spectrophotometry method of the investigated powder was 12.5 wt% from the total alloy content and as illustrated in the XRD pattern in Fig.2a the prepared powder contains metal phosphides, but by heat treatment of the prepared powder at 500 oC in hydrogen atmosphere, the phosphrous content decreased into 0.1 % due to the reduction of the metal phosphides to the metallic NiCo material which was detected by the XRD pattern in the Fig.2b the disappearance of the metal phosphides peaks.
Table 1 lists the B-H hysteresis loops data of saturation induction(Bs) in emu/g and the coercive force values for the investigated powder and the related heat treated one at 500 oC in hydrogen.
In recent years a liquid phase electroless deposition process wherein the metal powder ( in composite or alloyed form)with a microcrystalline metallic powders with a nano-sized scale through the autocatalytic liquid phase reduction of the cations of the metals.
From the phosphorus content determinations by EDAX as shown in Fig.1b and by spectrophotometry method of the investigated powder was 12.5 wt% from the total alloy content and as illustrated in the XRD pattern in Fig.2a the prepared powder contains metal phosphides, but by heat treatment of the prepared powder at 500 oC in hydrogen atmosphere, the phosphrous content decreased into 0.1 % due to the reduction of the metal phosphides to the metallic NiCo material which was detected by the XRD pattern in the Fig.2b the disappearance of the metal phosphides peaks.
Table 1 lists the B-H hysteresis loops data of saturation induction(Bs) in emu/g and the coercive force values for the investigated powder and the related heat treated one at 500 oC in hydrogen.
Online since: May 2013
Authors: Feng Lin He, Mao Xiang Jing, Xiao Xiao Meng, Xiang Qian Shen
Porous nanocomposites of M/Ce-K-O (M=Co, Ni, Cu) were prepared by the citrate-gel thermal decomposition and selective reduction process, and the effect of transition metal nanoparticles on their microstructure, catalytic performance were studied by XRD, SEM, BET, XPS and TG analysis.
The catalysts M/Ce-K-O (M=Co, Ni, Cu) were prepared by the citrate-gel thermal decomposition and selective reduction process, which was described in detail in our previous work [7].
While, for the metallic Co and Ni, it can not be estimated from the XRD data since the characteristic diffraction peaks of Co (111) and Ni (111) are too weak to evaluate, implying the Co and Ni grain sizes should be smaller.
Conclusions (1) Porous nanocomposites of M/Ce-K-O (M=Co, Ni, Cu) have been successfully prepared by the citrate-gel thermal decomposition and selective reduction process
The catalysts M/Ce-K-O (M=Co, Ni, Cu) were prepared by the citrate-gel thermal decomposition and selective reduction process, which was described in detail in our previous work [7].
While, for the metallic Co and Ni, it can not be estimated from the XRD data since the characteristic diffraction peaks of Co (111) and Ni (111) are too weak to evaluate, implying the Co and Ni grain sizes should be smaller.
Conclusions (1) Porous nanocomposites of M/Ce-K-O (M=Co, Ni, Cu) have been successfully prepared by the citrate-gel thermal decomposition and selective reduction process
Online since: July 2017
Authors: Evgeniy Valerjevich Korolev, Alexandr Sergeevich Inozemtcev
It was found that the reduction of the structural defects of high-strength lightweight concrete with high content of hollow microspheres is possible by the use of nanomodifier at the phase boundary.
The reduction of defects in lightweight concrete with ceramic microspheres can be achieved by modifying nanoscale additive of the surface of hollow filler [10-11].
However, the opposite dynamic is observed in the analysis of the data obtained for compositions of the nanomodified high-strength lightweight concrete.
Korolev, A method for the reduction of deformation of high-strength lightweight cement concrete // Advances in Cement Research. 28-2 (2015) 1-7. doi: 10.1680/jadcr.15.00049.
The reduction of defects in lightweight concrete with ceramic microspheres can be achieved by modifying nanoscale additive of the surface of hollow filler [10-11].
However, the opposite dynamic is observed in the analysis of the data obtained for compositions of the nanomodified high-strength lightweight concrete.
Korolev, A method for the reduction of deformation of high-strength lightweight cement concrete // Advances in Cement Research. 28-2 (2015) 1-7. doi: 10.1680/jadcr.15.00049.
Online since: December 2010
Authors: Guang Xue Chen, Bao Lin Tang, Jing Lei Tai, Qi Feng Chen
First, Spherical silver nano-particles were reduced from silver nitrate solution by liquid chemical reduction method, with hydrazine hydrate as reductant and PVP as surface-protection reagent.
In this paper, nano-sliver particles were obtained by liquid chemical reduction with silver nitrate and hydrazine hydrate as reactants and PVP as dispersant.
After experiment data processing, the curve which reflects the relationship between PVP content and average particle size of silver particles was plotted and is shown in Fig.3.
In this paper, Spherical silver nanoparticles were reduced from silver nitrate by Liquid chemical reduction method, with hydrazine hydrate as reductant and PVP as surface-protection reagent.
In this paper, nano-sliver particles were obtained by liquid chemical reduction with silver nitrate and hydrazine hydrate as reactants and PVP as dispersant.
After experiment data processing, the curve which reflects the relationship between PVP content and average particle size of silver particles was plotted and is shown in Fig.3.
In this paper, Spherical silver nanoparticles were reduced from silver nitrate by Liquid chemical reduction method, with hydrazine hydrate as reductant and PVP as surface-protection reagent.
Online since: January 2013
Authors: Filippo Chimento, Muhammad Nawaz
Using identical set of physical device parameters (doping, thicknesses), simulated structure was first calibrated with the experimental data.
A good match with the experimental data was first obtained (Fig. 2: left) where the minority carrier life time and contact resistances were used as fitting parameters to match with the experimental results.
Compared to Si, 4H-SiC based IGBTs show smaller on-state voltages and lower on-resistances indicating significant reduction in the conduction loss potential at higher blocking voltages.
Note that the data extracted from Si based IGBTs belong to available blocking voltage class with drift layer of thickness 350 – 650 µm while numerical simulated SiC based IGBTs uses a drift layer with maximum thickness of 200 µm (Nd of ~1 x 1014 cm-3) to achieve a maximum blocking voltage of 20 kV.
[7] Silvaco data system Inc, Atlas user manual, Ver 5.15.31.C, (2009).
A good match with the experimental data was first obtained (Fig. 2: left) where the minority carrier life time and contact resistances were used as fitting parameters to match with the experimental results.
Compared to Si, 4H-SiC based IGBTs show smaller on-state voltages and lower on-resistances indicating significant reduction in the conduction loss potential at higher blocking voltages.
Note that the data extracted from Si based IGBTs belong to available blocking voltage class with drift layer of thickness 350 – 650 µm while numerical simulated SiC based IGBTs uses a drift layer with maximum thickness of 200 µm (Nd of ~1 x 1014 cm-3) to achieve a maximum blocking voltage of 20 kV.
[7] Silvaco data system Inc, Atlas user manual, Ver 5.15.31.C, (2009).
Online since: April 2017
Authors: Montasser S. Tahat, Ali Cemal Benim
Five consecutive data points were gathered for each measurement.
1.4 Flat plate solar collector Measurements
The experimental work involved experiments conducted on the rig equipped with three types of working fluids, namely water only, ethylene glycol only, and the hybrid nanofluid.
The detailed specifications of the data for the solar collector are listed in Table 1.
This data would be insufficient in describing the collector and therefore data must be taken throughout the course of a given time in order to take the average efficiency.
η=mCpTout-TinICAC (2) The following instrumentation was used: Type K Thermocouples, G ½ Flow Sensor, Microprocessor Data Acquisition board, and a Daystar Solar Meter.
Potential of Size Reduction of Flat-Plate Solar Collectors when Applying Al2O3 Nanofluid.
The detailed specifications of the data for the solar collector are listed in Table 1.
This data would be insufficient in describing the collector and therefore data must be taken throughout the course of a given time in order to take the average efficiency.
η=mCpTout-TinICAC (2) The following instrumentation was used: Type K Thermocouples, G ½ Flow Sensor, Microprocessor Data Acquisition board, and a Daystar Solar Meter.
Potential of Size Reduction of Flat-Plate Solar Collectors when Applying Al2O3 Nanofluid.