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Online since: September 2021
Authors: Jamil Haddad, Oleksandr Yehurnov, Kostiantyn Bas, Olena Svietkina, Sergiy Boruk, Roman Klishchenko, Olha Khodos
Every 10 years (according to statistical data) the amount of ash and slag produced at thermal power plants doubles.
Average size of the powdered particles was identified according to data by laser analyzer LAZER MICRON SIZER PRO-700 (Japan).
As a result of electron microscopic studies of the morphology of the phases of ash and products of its enrichment according to the data of X-ray structural analysis, the features of the microstructure of their surface were revealed.
Analysis of the experimental data indicates the rupture of the bridging -CH2- and -CH2-CH2- bonds between the condensed aromatic fragments in the layer and the formation of CH3- groups (period of the g-band 4.44-4.70 Å).
As a result of experimental data, it was found that the flocculation of coals after vibro-shock loading takes place simultaneously in two directions: ionic-molecular and radical, which is a feature of the grinding of minerals in vertical vibrating mills.
Average size of the powdered particles was identified according to data by laser analyzer LAZER MICRON SIZER PRO-700 (Japan).
As a result of electron microscopic studies of the morphology of the phases of ash and products of its enrichment according to the data of X-ray structural analysis, the features of the microstructure of their surface were revealed.
Analysis of the experimental data indicates the rupture of the bridging -CH2- and -CH2-CH2- bonds between the condensed aromatic fragments in the layer and the formation of CH3- groups (period of the g-band 4.44-4.70 Å).
As a result of experimental data, it was found that the flocculation of coals after vibro-shock loading takes place simultaneously in two directions: ionic-molecular and radical, which is a feature of the grinding of minerals in vertical vibrating mills.
Online since: October 2011
Authors: Chang Mao Hung
As far as the previous systematic study [5,6] showed that platinum, palladium, and rhodium have marked activity and can be utilized to elucidate the reduction characteristics of NH3 conversion in a catalytic oxidation and dehydrogenation system.
However, no electrocatalytic oxidation assessment data are available for most fabricate and use these metal composites.
Cyclic voltammetry (CV) and linear sweep voltammograms (LSV) measurements were conducted at room temperature with an electrochemical analyzer (CHI 6081D, USA) using a three-electrode electrochemical cell to investigate the oxidation/reduction of the powder samples.
Furthermore, the generation of rhodium hydroxide species (Rh(OH) x) was measured with reduction peaks at 0.5 V [14].
In contrast, the PtPdRh ternary electrocatalytic materials in 0.5 M H2SO4 gives negligible oxidation-reduction current in this potential window (Fig. 3a).
However, no electrocatalytic oxidation assessment data are available for most fabricate and use these metal composites.
Cyclic voltammetry (CV) and linear sweep voltammograms (LSV) measurements were conducted at room temperature with an electrochemical analyzer (CHI 6081D, USA) using a three-electrode electrochemical cell to investigate the oxidation/reduction of the powder samples.
Furthermore, the generation of rhodium hydroxide species (Rh(OH) x) was measured with reduction peaks at 0.5 V [14].
In contrast, the PtPdRh ternary electrocatalytic materials in 0.5 M H2SO4 gives negligible oxidation-reduction current in this potential window (Fig. 3a).
Online since: October 2011
Authors: Pejman Keikhaei Dehdezi, Matthew R. Hall, Andrew R. Dawson
In addition, numerical simulation is performed to study the potential application of PCM-modified soil for reduction of temperature variations in ground.
The reduction in thermal diffusivity of PCM-modified soil is due to the reduction of thermal conductivity as well as the increase of specific heat capacity.
The climatic data were extracted from the Seasonal Monitoring Program (SMP) database of the Long-Term Pavement Performance program (LTPP) project [12] for the state of Arizona between 01/07/1996 to 01/10/1996.
Using the Arizona climatic data and experimentally determined thermo-physical properties of PCM-modified soils, temperature variation in the ground was predicted using the one-dimensional heat transport model.
[12] US Department of Transportation – Federal Transport Administration, LTPP Seasonal Monitoring Programme (SMP): Pavement Performance Database (PPDB), DVD Version, Standard Data Release 23.0, USA; 2009
The reduction in thermal diffusivity of PCM-modified soil is due to the reduction of thermal conductivity as well as the increase of specific heat capacity.
The climatic data were extracted from the Seasonal Monitoring Program (SMP) database of the Long-Term Pavement Performance program (LTPP) project [12] for the state of Arizona between 01/07/1996 to 01/10/1996.
Using the Arizona climatic data and experimentally determined thermo-physical properties of PCM-modified soils, temperature variation in the ground was predicted using the one-dimensional heat transport model.
[12] US Department of Transportation – Federal Transport Administration, LTPP Seasonal Monitoring Programme (SMP): Pavement Performance Database (PPDB), DVD Version, Standard Data Release 23.0, USA; 2009
Online since: March 2013
Authors: Jarosław Konieczny, Waldemar Rączka, Marek Sibielak
The selected structure also allows for flexible selection of the measuring channels, which are essential for system monitoring and data acquisition.
The adjustable parameters in this case are: · type of waveform · frequency table · number of repetitions of full periods Variables used for the implementation of the above mentioned controller were collected in a cluster representing data types [11] shown in Figure 3.
Classes of roads and their power spectral densities are defined in ISO 8608:1995 entitled: “Mechanical vibration – Road surface profiles – Reporting of measured data”.
Konieczny, Modified Clipped-LQR Method for Semi-Active Vibration Reduction Systems with Hysteresis, Diffusion and Defect Data-Solid State Data-Part B-Solid State Phenomena, 177, 10-22, 2011, Trans Tech Publ
Sibielak, Mathematical Model of a Shape Memory Alloy Spring Intended for Vibration Reduction Systems, Diffusion and Defect Data-Solid State Data-Part B-Solid State Phenomena, 177, 65, 2011, Trans Tech Publ
The adjustable parameters in this case are: · type of waveform · frequency table · number of repetitions of full periods Variables used for the implementation of the above mentioned controller were collected in a cluster representing data types [11] shown in Figure 3.
Classes of roads and their power spectral densities are defined in ISO 8608:1995 entitled: “Mechanical vibration – Road surface profiles – Reporting of measured data”.
Konieczny, Modified Clipped-LQR Method for Semi-Active Vibration Reduction Systems with Hysteresis, Diffusion and Defect Data-Solid State Data-Part B-Solid State Phenomena, 177, 10-22, 2011, Trans Tech Publ
Sibielak, Mathematical Model of a Shape Memory Alloy Spring Intended for Vibration Reduction Systems, Diffusion and Defect Data-Solid State Data-Part B-Solid State Phenomena, 177, 65, 2011, Trans Tech Publ
Online since: August 2014
Authors: Lin Hui Zeng, Guang Ming Li, Song Li
It shows that fuel economy policy is essential in energy saving and carbon reduction in vehicle sector.
Data of per capita GDP and vehicle ownership from 1987 to 2007 is obtained from Shanghai statistical yearbook. α and β can be determined by fitting the change trend of vehicle ownership with the help of Excel.
By 2030, CO2 emissions will obtain a reduction of 10.427 million t compared with the baseline scenario.
By 2030, CO2 emissions will obtain a reduction of 10.427 million t compared with the baseline scenario.
It shows that fuel economy policy is essential in energy saving and carbon reduction in vehicle sector.
Data of per capita GDP and vehicle ownership from 1987 to 2007 is obtained from Shanghai statistical yearbook. α and β can be determined by fitting the change trend of vehicle ownership with the help of Excel.
By 2030, CO2 emissions will obtain a reduction of 10.427 million t compared with the baseline scenario.
By 2030, CO2 emissions will obtain a reduction of 10.427 million t compared with the baseline scenario.
It shows that fuel economy policy is essential in energy saving and carbon reduction in vehicle sector.
Online since: March 2013
Authors: Xiu Chen Zhao, Ying Liu, Hong Li, Jing Wei Cheng, Yun Xia Lv
Results indicated that the lubricant oils adding oleic acid-modified zinc phosphate nanoparticles exhibited a good friction-reduction and anti-wear property.
For each sample, three identical tests were performed so as to minimize data scattering.
Fig. 5 shows the friction reduction properties of the zinc phosphate nanoparticles at different additive concentration in base oil.
(2) OA-zinc phosphate nanoparticles improved the anti-wear and friction-reduction properties of the base oil appreciably, even at relatively low concentration.
With further increasing the additive concentration, it was bad for the anti-wear and friction-reduction properties of the base oil
For each sample, three identical tests were performed so as to minimize data scattering.
Fig. 5 shows the friction reduction properties of the zinc phosphate nanoparticles at different additive concentration in base oil.
(2) OA-zinc phosphate nanoparticles improved the anti-wear and friction-reduction properties of the base oil appreciably, even at relatively low concentration.
With further increasing the additive concentration, it was bad for the anti-wear and friction-reduction properties of the base oil
Online since: May 2012
Authors: Dong Xiao Niu, Guan Qing Wang, Hong Juan Li, Hong Yun Zhang
The theory has been proved that this method has many advantages, such as required less sample data, high prediction precision, simple calculation and verifiable, when the basic data is strictly index increase [3-4].
; (13) In which, expresses the original data; expresses the simulation results by using models and original data.
Example Analysis The history data of China wind power accumulated installed capacity from 2000 to 2010 was used in the following part to check the accuracy of the established combined model
The steps were shown as follow: First, the category of data should be analyzed, as Fig.1 shows.
Finally, the prediction of data from 2008 to 2010 was given in Table 2
; (13) In which, expresses the original data; expresses the simulation results by using models and original data.
Example Analysis The history data of China wind power accumulated installed capacity from 2000 to 2010 was used in the following part to check the accuracy of the established combined model
The steps were shown as follow: First, the category of data should be analyzed, as Fig.1 shows.
Finally, the prediction of data from 2008 to 2010 was given in Table 2
Online since: October 2014
Authors: Jian Xin Xie, Xiao Le Wang, Chao Liu
Compared with original data, decoupling degree also has a very great improvement, illustrating that the optimized data has greater effect for the isolated vibration of engine, in order to further verify the feasibility of optimization design method.
Through data analysis, it can prove the simulation calculation is successful.
It uses Adams software for simulation, and compared with original data, the vibration frequency of mounting system illustrates that the optimized result can achieve the effect of mounting system vibration reduction.
Through simulation data, it shows that energy distribution situation of energy decoupling optimization achieves 81%.
Simulation research of car engine mounting reduction feature[D]Shenyang Technology University, 2011
Through data analysis, it can prove the simulation calculation is successful.
It uses Adams software for simulation, and compared with original data, the vibration frequency of mounting system illustrates that the optimized result can achieve the effect of mounting system vibration reduction.
Through simulation data, it shows that energy distribution situation of energy decoupling optimization achieves 81%.
Simulation research of car engine mounting reduction feature[D]Shenyang Technology University, 2011
Online since: October 2009
Authors: Xin Cun Zhuang, Hua Xiang, Zhen Zhao
Firstly, the simulation results are compared with
experimental data from a reference to verify the usefulness of the simulation.
To verify the validity, the simulation performed under the same conditions as experiment is compared with experimental data in terms of forming force.
In phase 1, the simulation results are compared with the experimental data to verify the validity of the simulation results.
Fig. 2 shows the experimental tool for the sheet metal extrusion process, and an in-house developed data acquisition system is established to measure the force-stroke curve.
The data acquisition system is based on the electrical measuring method, in which the force is measured by sticking a full bridge type of positioning strain gauges on the punch and a displacement transducer is used to collect the corresponding stroke information simultaneously.
To verify the validity, the simulation performed under the same conditions as experiment is compared with experimental data in terms of forming force.
In phase 1, the simulation results are compared with the experimental data to verify the validity of the simulation results.
Fig. 2 shows the experimental tool for the sheet metal extrusion process, and an in-house developed data acquisition system is established to measure the force-stroke curve.
The data acquisition system is based on the electrical measuring method, in which the force is measured by sticking a full bridge type of positioning strain gauges on the punch and a displacement transducer is used to collect the corresponding stroke information simultaneously.
Online since: October 2006
Authors: Teodoro Valente, Cecilia Bartuli, Giovanni Pulci
Main expected benefits are reduction of drag, enhancement in lift-to-drag ratio and
reduction of interferences with radio frequency transmissions during the re-entry.
(a) (b) Fig.°2 XRD pattern of samples exposed at 1200°C for 30' (a); fitting experimental data relative to the thickness of oxide layer by a para-linear model for T=1200°C (b).
In Fig. 2 the para-linear fitting of experimental data is shown, evidencing very good correlation coefficients.
A simple parabolic fitting model (δ(t) = k1 t + k2) shows excellent correlation coefficients with experimental data (Fig.3b).
(a) (b) Fig.°3 XRD pattern of a sample exposed at 1800°C for 3' (a); fitting experimental data relative to the total thickness of oxide layer by a simple parabolic model for T=1800°C (b). 3.
(a) (b) Fig.°2 XRD pattern of samples exposed at 1200°C for 30' (a); fitting experimental data relative to the thickness of oxide layer by a para-linear model for T=1200°C (b).
In Fig. 2 the para-linear fitting of experimental data is shown, evidencing very good correlation coefficients.
A simple parabolic fitting model (δ(t) = k1 t + k2) shows excellent correlation coefficients with experimental data (Fig.3b).
(a) (b) Fig.°3 XRD pattern of a sample exposed at 1800°C for 3' (a); fitting experimental data relative to the total thickness of oxide layer by a simple parabolic model for T=1800°C (b). 3.