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Online since: February 2008
Authors: A. Sellai, H. Widatallah, O.A. Yassin, M. Elzain
Prior to the two-terminal admittance (Y = G + jB) measurements on the sample, measurements were carried out using the empty cell over the entire frequency range considered (100 Hz to 10 MHz) so that they are automatically subtracted from subsequently measured data.
Rietvield refinement of XRD data as well as Mossbauer measurements are underway to identify the species involved in the substitution process, which should provide detailed and direct substantiation on the hopping mechanism and might result in a more rigorous interpretation of the observed trends.
Impedance data at various frequencies and tempera- tures can be displayed in several forms suitable for extracting maximum of information about the material under study.
This may be attributed to a reduction in the capacitive effects of the bulk on Li-doping that will wipe out the effect of the respective increase in the bulk resistance.
Online since: October 2014
Authors: Federico Balugani, Andrea Genovesi, Michele Gadaleta
Recently, novel methodologies, which aim at achieving a reduction in the Energy Consumption (EC), while avoiding substantial plant revision have been addressed in [4-6].
A for loop is then implemented, that varies the robot base position and computes the EC for each grid point, the computed data being stored into a file.
Unfortunately the graphic potential offered by Dymola does not allow a smooth representation of the data.
Therefore, data files generated by Dymola (also including information about cycle time) are read in Matlab, which generates a color map that represents the trend of the robot EC by varying its position on the xy plane.
Online since: June 2014
Authors: Ion Simionescu, Constantin Ocnărescu, Maria Ocnărescu, Viorel Vulturescu
Fig. 2 – Denavit - Hartenberg system for axis coordination Robots 4R (serial) Both the kinematic chain modules and the mechanical hand are driven by DC motors by worm gear-wheel reduction.
The system is runs a MATLAB program on a PC which takes data from the serial port, through the data acquisition system, the current as read on the standard resistance of the motors force circuits.
Fig.6 Diagnosis of the of Kinematic Parameters Fig.7 Diagnosis of the of Dynamic Parameters Data acquisition is recorded and synchronized on RASTER, “.pcx” and “.bmp” files, as a function of various factors in connection with positioning and orientation accuracy.
Online since: December 2014
Authors: Zoltán Záležák, Norbert Kecskés, Rastislav Bernát
Due to stricter limits, current research and development of new diesel engines are oriented towards the increase of engine power per unit volume of the cylinder, towards the increase of engine efficiency and towards the reduction of energy consumption.
To measure parameters as air pressure in the cylinder, it is necessary to use a device that is capable to respond immediately to changes and record the data, since the change takes only a few milliseconds.
Based on the evaluation of obtained data, we have found that in the third set of measurements at the angle of rotation of 30°, there was a significant drop in pressure at the end of the compression stroke from 2.3 MPa to 2.08 MPa.
All these measured data at the end of the compression stroke and the pressure drop increase in the intake manifold confirm the theory of the necessity of periodic inspections of the condition of air filters.
Online since: November 2015
Authors: Kalathur Kumar, S. Arul
Many researchers have worked on above areas and came out with their standards providing voluminous data on failure of gear teeth, and techniques to address the same [2].
The so generated data, is analyzed using numerical and statistical tools clubbed with a suitable computer programming for optimization.
A medium type speed reducer gear box, with input speed 1440 rpm, speed reduction 2.5, and power to be transmitted 30kw is chosen.
[7] “PSG design data book”, NCBH Publishers, (2010)
Online since: March 2012
Authors: Jin Cai, Yuan Li, Ning Tang
Lossy wavelet coders provide much greater energy compaction than lossless methods, efficiently representing large amounts of data.
Computation of the lifting-based DWT can be explained via a data dependency diagram as shown by a block diagram in Fig.1, For the DWT requiring four lifting factors, such as the (a-b-c-d) filter, the computation is done in four stages as shown in Fig.1.
The multicomponent transform is effective in reducing the correlations that cause reduction in redundancy and increase in compression performance.
[7] Puetter, Richard; Yahil, Amos: The Pixon Method for Data Compression Image Classification, and Image Reconstruction.
Online since: June 2012
Authors: Li Yang Xie, Yuan Yuan Ma, Xiao Feng Qin
Take ZF5000/16/28 hydraulic support as a prototype, dynamic strain instrument and static strain instrument are used to do data collection respectively.
a) top beam point b) base point Fig.1 Measuring-point arrangement Choose point Patch Instrument Test Record data Data processing Temperature compensation Calibration Grounding Fig.2 Test process According to the test process (shown in Fig.2), the matters needing attention in test process are: ①. temperature compensation.
With the increase of the number of units and the reduction of unit reliability, the reliability of the series system will quickly reduced.
Online since: November 2011
Authors: Lu Zhang, Qiu Hong Song
Considering that MC9S12XS128 reads more slowly than OV6620 output speed, the high-speed, low-power, asynchronous FIFO dual-ported SRAM IDT7008 is applied to do the data cache to optimize the system.
OV6620, PAL standard, 25 frames per second, 2 fields per frame, then 50 fields per second, i.e. an image is to be produced every one second, 356 x 292 pixels, has high sensitivity, high integration, and great power-reduction relative to CCD.
On the data transmission with MCU, without A/D converter and video sync separator chip LM1881, the field synchronous interrupt signal is ready-made.
Program flowchart Black-Line Extraction Algorithm In order to show the obvious black-white effect of the image, the collected image grayscale data is done the binarization to obtain the binary image.
Online since: October 2013
Authors: Spataru Ionut, Strajescu Eugen
This can lead to serious cost reduction, both for the manufacturers and the users of magnetron sputter equipment.
However, this model can be coupled to a so-called \particle-in-cell (PIC)" model which calculates the electric field, produced by the external electrical circuit and the spatial distribution of the charged particles, in a self-consistent manner The coupled model is named \particle-in-cell/Monte Carlo collisions (PIC/MCC)" model and is able to produce a wealth of data, such as cathode voltage and current, species densities, uses and energies, potential distribution, and information on the individual collisions in the plasma.
· The coating material are precision manufacture for this installation · One of the coating material that is general used is hi purity silver · To adjust the parameters online means that will considerable loss of glass To calibrate our simulation we use real data of the parameter used in a previous manufacture process.
We use the all the input data and match our results of the simulation with the real result.
Online since: August 2013
Authors: Yong Sheng Ge, Chun Mei Wei, Jin Chuan Gu
All of the chemical treatments using oxidizing agents employed for creating acidic functional groups are associated with the reduction of specific surface area and total pore volume, mainly due to the destruction of porous structures within activated carbon during oxidation.
The kinetics data followed the pseudo-second-order model and the rate of chromium uptake was found to be controlled by external mass transfer and intra-particle diffusion throughout the entire adsorption period.
Equilibrium data fit well to the Tempkin and Freundlich models.
The experimental data were analyzed by the Freundlich isotherm and the Langmuir isotherm.
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