Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: December 2012
Authors: Vikas Upadhyay, P.K. Jain, N.K. Mehta
Experimental details A rigid, high power precision lathe (model: NH22; make: HMT, India) equipped with specially designed preheating module and data acquisition system was used for the experimental work.
Reduction in cutting forces was minimum for a preheat temperature of 200 0C while maximum for 500 0C.
Reduction in cutting forces with increase in preheat temperature is attributed to the reduction in shear strength of workpiece material with increasing preheat temperature.
This reduction in surface roughness is due to reduction in workpiece material hardness leading to smoother removal of chip from the surface because of lower chip rupture stress.
Reduction in chip back surface roughness with workpiece preheat was due to lower chip rupture stress at elevated temperature resulting in smooth chip back surface.
Online since: August 2011
Authors: Ze Ren, Rui Meng
The PDB Physical Database of earth It consists of gravity data, aeromagnetic data, geomagnetism data, seismic data and the earth electromagnetism and so on, all data according to the work area as indexing, The work area data can also according to the measure line as indexing, be related the attachment.
Graphics data and attribute data is through between the only identifier connection.
The above drilling data is exist by the data table form.
The main design of database table including engineering basic data, drilling data, comprehensive layered data, soil test data, the water sample data, in situ test, etc.
City and engineering basic research on disaster reduction (1995) [C].
Online since: March 2015
Authors: Jie Fu, Yang Zhang, Zi Xue Wang, Chao Du
Compared with the previous pictures, the oxidation and reduction peaks on the curves have a great change.
Compared with the previous figures, the oxidation and reduction peaks on the curves also have a great change.
Compared the curves, Fe3+/Fe2+ redox couple shows a better peak potential difference than VO2+/VO2+ redox couple and its standard electrode potential is between hydrogen oxidation potential and oxygen reduction potential, so it can be easily oxidized after reduction.
However, VO2+/VO2+ redox couple’s standard electrode potential is higher than oxygen reduction potential, it’s hard to be oxidized.
Through the composition and concentration of catholyte, and the test data of redox potential and current were changed, we optimized the performance and reliability of hydrogen redox fuel cell.
Online since: May 2007
Authors: Hyung Ho Jo, Hoon Cho, Byoung Soo Lee, Jin Seok Yang
To obtain desired mechanical strength of the alloy, the process parameters including continuous casting speed, reduction in area and annealing temperature have to be controlled.
To obtain the desired mechanical strength and machinability of the alloy, the process parameters--including continuous casting speed, reduction in area, and annealing temperature--have to be controlled.
After continuous casting, the swaging process with reduction in area of 36 % was performed, and then annealing was carried out at 700 OC for 8 hr under air and vacuum atmosphere of 2.0 × 10 -2 torr.
The acquisition of the cutting forces was made by a piezoelectric dynamometer Kistler 9256B1 connected to a control unit, data acquisition board and computer, capable of measuring simultaneously every orthogonal forces developed in turning operations (cutting force (Fz), feed force (Fy) and depth force (Fx)).
Online since: September 2008
Authors: Jian Hui Zhao, Peter Alexandrov, Ming Su, Kuang Sheng, Y. Zhang, Leonid Fursin
The measured increase of specific-on resistance with temperature due to a reduction of electron mobility agrees with the numerical prediction.
Threshold voltage is extracted to be 0.4 V at RT and decreases to -0.12 V at 300 °C because of the reduction of junction build-in voltage.
It should be noticed that the 0.52V threshold voltage reduction for LV LJFETs from RT to 300 °C is almost identical to the drop of 0.5 V for HV LJFETs.
Vt is plotted in Fig. 4 that shows a good agreement between the model and the measured data.
Online since: March 2021
Authors: Jonas Holtmann, Denis Kiefel, Stefan Neumann, Rainer Stoessel, Christian U. Grosse
While the currently available systems capture a large amount of process data, they still lack the ability to interpret the acquired data adequately.
In this work we present the first steps towards an automated evaluation of online monitoring data i.e. melt pool data.
Different approaches to the data analysis have been explored.
Sample and Data Generation In order to train a convolutional neural network an adequate data base has to be generated.
Green rectangles represent the ground truth data.
Online since: April 2013
Authors: Gianluca D'Urso, C. Merla, Giancarlo Maccarini
The first level of analysis consisted in an overall study of the data: thus, the resulting global analysis can be considered representative of the whole data set.
Secondly, the data have been stratified by basing on a process parameters criterion: the data obtained for diameters equal to 300 and 200 μm were grouped together and the same was made for the data regarding the diameter of 100 and 50 μm.
Fig. 4 shows the same data for the other diameters.
Due to the nonegligible data scatter only limited effects of frequency and peak current on the DOC-RO% can be observed.
Because of the nonegligible data scatter, only limited effects of frequency and peak current were observed.
Online since: February 2011
Authors: Ya Mian Peng, Huan Cheng Zhang, Kai Li Wang
With the following form to illustrate: Set space for certain significance and operaters are the metric spaces, and called the solution space and data space.
Its raw data to add a small perturbation , then corresponds to the solution for the disturbance data as follows: Function can be described as the approximate solution of , when the value will be for different problems of varying degrees of approximation and get great value.
The solution accuracy is clearly very poor, that is the problem of data is very sensitive to disturbance response and solutions the uniqueness and stability are not met.
The inverse problem is investigated by the known data to reverse parameters for the above form.
The regularization method is to consider the known data and calculated data and least squares and based on known information provided by the root of the problem to limit the solution to construct a functional on the determined parameters.
Online since: November 2011
Authors: Ze Sheng Zhang, Gui Shan Liu, Bo Yang, Wei He
We also expected them to cause a reduction in body weight caused by their CR mimetic effect.
Data analysis All calculations were performed by using SPSS 13.0 statistical software.
Data were analyzed with one-way ANOVA.
When we planned this pilot study, we anticipated that resveratrol would cause body weight reduction because resveratrol is a CR mimetic chemical, but that was not the case.
The observed reduction in MDA level in the SAM following the administration of polygonum cuspidatum extract suggests that resveratrol may have an antioxidant effect.
Online since: November 2010
Authors: Angelo Mazzù
The prototype was also provided with a PC controlled inverter for the control of the speed and the acquisition of data, in particular the applied torque and the consumed energy; an end-of-stroke sensor was added for having a zero reference in the output data.
The acquired data were rolling speed, applied torque, instant of cycle start and energy consumption; these data were subsequently elaborated for obtaining the applied pressure during a whole cycle and the energy consumption rate.
The data are expressed as a function of the angular position φ of the cam.
Figure 10 compares the pressure obtained by the measured data with the theoretical curves, considering again the same bands of material behaviour.
An electric version of the machine, equipped with an electronic system for control and data acquisition, was realised for experimental work.
Showing 6621 to 6630 of 40324 items