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Online since: October 2014
Authors: Kenichi Funazaki, W. Ghopa Wan Aizon, Mohd Radzi Abu Mansor
Even still, tangential leakage ejection causes significant reduction of this vortex system at the same time as the secondary losses decrease at cascade exit.
This study was also supported by a numerical simulation to enhance the understanding of flow field over the endwall especially at the region where data cannot be obtained from the experiment alone.
The measurement system is includes pneumatic 5-holes Pitot tube, traverse device, pressure transducer and data logger which are connected to the computer for data recording.
Since the passage vortex has been predicted to be one of the sources affecting first loss core, any reduction or elimination of the leading edge horse vortex is thought to have little effect on the shape and position of the passage vortex.
Online since: December 2013
Authors: Bin Xie, Zhong Xiang Zhu, En Rong Mao, Zhen Li
The power for the drive system is delivered from the engine and through the belt drive device, CVT, clutch, gearbox, main drive, differential and hub reduction gears, ultimately to the front wheels.
By restraining coincident, the two datum axises meeting each other is defined as a constraint in the assembling environment.
The drawn datum axis for the driven gear in Pro/E is shown in Fig.1.
Fig.1 Defined datum axis before assembling Construction and solution of the finite element model.
Gear pairs Z1—Z2 Remark First (in the transmission) 17—39 — Second (in the transmission) 15—41 Modified Main drive 16—70 Modified Hub reduction 11—85 Modified Fig.8 Constitution of the gear assembly Table 3 Teeth number of gear pair Construction of the virtual prototype model.
Online since: May 2021
Authors: Khadijah Ismail, Siti Nooraya Mohd Tawil, Nafarizal Nayan, Nur Amaliyana Raship, Muliana Tahan, Anis Suhaili Bakri
The film structure was examined using an XRD, PANalytical X-Pert Powder machine and the data was collected from 20o- 80o of 2θ degree angle.
The data collected from AFM was then interpreted by XEI software.
Likewise, this result also exhibits reduction in surface roughness from 5.21 nm to 3.21 nm for 12.0 cm to 13.5 cm distance, respectively.
Fig. 4(b) represents the bandgap, Eg at various distance target to the substrate which are determined from the transmittance data and calculated using Tauc’s equation [24,25].
The surface roughness indicates reduction while the grain size of the films decreases with the increase of distance from target and substrate.
Online since: December 2019
Authors: Grigor Arakelyan, Marya Badalyan, Amalya Karapetyan
Methodology According [3] to data lightweight concretes are construction materials of new type, they are characterized by low weight as well high thermo-insulated, antiseismic and other features.
By the existing data of the mechanism of hydration and the hardening of various mineral bindings it is possible to theoretically give reasons for the effect of this or that additional materials on the mechanism on this process and to prove it experimentally.
Lithoid pumice working model derivatogram of Jraber-Lusavan area Lithoid pumice radiogram is characterized by little quantity of diffraction maximums of not large size that prove the data of the petrography about little quantity of crystal additions don’t outnumber 2…3% (Fig. 2).
The system is inclined to the reduction of its free energy; it easily creates chemical links through the processes of adsorption and wetting.
The system aims to the reduction of its free energy; it easily makes chemical links through the processes of adsorption and wetting.
Online since: October 2011
Authors: Bei Zhu, Jun Xiao, Ji Hua Liao
Main conclusions are drawn as following: (1) high geothermal or geothermal gradient accelerates the reduction of sandstone porosity, (2) high geothermal or geothermal gradient can improve the reservoir properties by promoting the dissolution of carbonate minerals, the filling of hydrocarbon and the development of overpressure, (3) overpressure can preserve partial primary pores, (4) overpressure can inhibit the growth of some cements and slow down the destruction of diagenesis on deep reservoir, and (5) overpressure can generate some secondary pores by enhancing dissolution.
Specifically, high temperature accelerates the reduction of sandstone porosity but improves the reservoir properties by promoting the dissolution of carbonate minerals, the filling of hydrocarbon and the development of overpressure.
Acknowledgements Thanks go to Zhanjiang Branch of CNOOC Limited who provides original data of this paper.
Online since: June 2014
Authors: Radu Dan Rugescu
The optimal design is imposing a lower mass ratio that expected and is the main cause of efficiency reduction when very high velocity requirements are searched for, like in orbital launchers.
It would also enable a reduction in overall rocket mass because there would be no need to carry a device to ignite the solid propellant; b) The rocket would operate initially in the hybrid mode, which would afford the inherent reliability of that hybrid mode plus the controllability that is typically needed during the early phase of the ascent.
[9] *** (2014), Space Launch Report, Atlas V Data Sheet, Last updated January 10, 2014, http://www.spacelaunchreport.com/atlas5.html
Online since: August 2013
Authors: Li Li Zhang, Yan Nan Zhai, Hun Zhang, Kun Yang, Zhao Xin Wang
This interpretes that insertion of a thin Zr layer into Zr-N film is attributed to the densification of grain boundaries in ZrN/Zr/ZrN films followed by the reduction of fast diffusion of Cu through ZrN /Zr/ ZrN multilayered films.
Since XRD data do not indicate any other phase formation and there is no considerable increase in the sheet resistance value after annealing at 700 °C, the formation of these small islands indicates the onset of Cu agglomeration.
The significant improvement of ZrN diffusion barrier property by the insertion of a thin Zr layer into ZrN film was attributed to the densification of grain boundaries in Zr-N/Zr/Zr-N films followed by the reduction of fast diffusion of Cu through Zr-N/Zr/Zr-N films.
Online since: October 2012
Authors: Chang Sheng Cheng, Yan Meng Shang
Let, where S represent the set of clustering data, represent the individual,the will be expressed in the form of binary, determining the length of the required binary according to the size of , for example,,the length is fixed.
The results show that, for a given mixing sample set, the reduction of within-class scatter will lead to the increase of between-class scatter.
Experimental Analysis The authors have simulated two sets of data, data1 and data2, to validate the performance of the proposed algorithm, which data1 have 400 data, data2 have 500 data.
We can also see that the superior of the new clustering algorithm are obviously to the traditional clustering algorithm from the experimental data, either in error sum of squares or accuracy.
Online since: September 2012
Authors: Shi Qi Huang, Bei He Wang, Yi Hong Li, Bei Ge
Introduction Synthetic aperture radar is an active microwave imaging radar, and the unique characteristic of it is that can obtain data under all-time and all-weather.
EMD is a new and complete data-driven processing method and it need not choose the basis function and perform the self-adaptation adjustment according with the signal itself characteristics.
The description of SAR target detection algorithm EMD uses the self feature of signal to decompose the signal, therefore, not only it is a full data-driven method for signal processing, but also it is an adaptive, multi-scale and multi-resolution analysis method.
The experimental data comes from the SAR image databank of the moving and stationary target acquisition and recognition (MSTAR), and they are shown in Fig.2.
A novel method for speckle noise reduction and ship target detection in SAR images.
Online since: September 2014
Authors: Yan Tang
It provides storage and services to the mass of text and video data.
Data center subsystem.
It is constituted bythree separate functional modules, the data access distribution system, distributed database system and distributed mass storage system.
It is composed by message data bus.
It is middle layer tool for highly fault-tolerant and high-powered data transmission, which is applied for managing each server, storage node and various control messages between server and client, is the foundation for cloud computing. 3.
Showing 19191 to 19200 of 40694 items