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Online since: February 2013
Authors: Bjørn R Sørensen, Raymond Riise
Several methods for generating and displaying such meteorological data have been developed.
Boiler model data.
Table 3 and 4 contain data used for the boilers.
Energy price data.
[16] Nord Pool Spot ASA. http://www.nordpoolspot.com/Market-data1/Downloads/ Historical-Data-Download1/Data-Download-Page/.
Online since: July 2012
Authors: Dao Xin Wu, Chang Bin Xia, Chun Hua Liu
This showed that in acidic pH conditions the thermodynamic driving force for metal reduction is significantly low.At pH 4, the values of reduction increased to 63.1 %.
For pH 7, 8,9 and 10, the percentage reduction further increased to 95.2%, 93.1% 88.6%and 80.2%, respectively.
The complexation of copper with citric acid,favored the reduction of copper due to decreased electron hole recombination.
It is reported[5] that the reductions of Cu(II,I), Cu(I,0) and Cu(II) couples are more favorable with increasing pH.
A large number of experiments show that TiO2 all have the same maximum resources quantity, the largest in the data, catalytic efficiency increases, and increase with the data big, than the largest after data, catalytic efficiency has slightly lower, this is mainly because of the suspension of TiO2 incident light to cover.
Online since: January 2014
Authors: Hai Long Fu, Long Qing Zou, Zhi Peng Feng, Yu Lian Chang
The average error of data from this system is within 5%.
The regularities distribution of the pulling loads are obtained from the experiments data, which can give the theoretical supports to the safety operations about the earth anchor piles.
All the signals can be collected and amplified by charge amplifier and transformed and stored by the data acquisition system and computer.
The output ports of the sensor connect with the data acquisition instrument and the computer by data line.
Finally the real-time collecting and storage of the test data can be realized.
Online since: February 2015
Authors: Abu Bakar Nooh, Abdul Rahim Zulhasni
It aims to create an opportunity to develop own patent, alongside cost reduction on the benchmarked systems.
This indirectly reflects the cost reduction outcome on the material consumption related to the bracket design.
The component was fabricated as a prototype and the data of weight reduction was measured.
Meanwhile, the optimization method using TRIZ achieved 75.3% of weight reduction against the existing design.
In the same financial year (2011/2012), the organization really shows significant results in cost reduction performance.
Online since: January 2011
Authors: Pu Li, Wen Zhu Li, Yu Dong, Yu Lei Chen, Feng Ming Ma
Microbial inactivation data were used to obtain, which after the identification of the critical parameters to reduce the content of spoilage microorganisms in orange juice.To provide a base of scientific knowledge and support the innovation.
Statistical analysis Statistical analysis was carried out using data analysis functions in Microsoft Excel and Significant differences between the results were calculated by analysis of variance (ANOVA).
Effect of the number of pulses on E. coli reduction As t the number of pulses from 4 to 32, the E. coli reduction went up a little at the same imput voltage (Fig. 3).
Effect of the total soluble solids on E. coli reduction Fig.5 indicates that at any total soluble solids, the E. coli reduction decrease a little with the the imput voltage of 4kV,the number of pulses of 64 and the juice thickness of 2mm.
At the total soluble solids of 40ºBrix, the E. coli reduction decrease by approximately 0.56log.
Online since: March 2014
Authors: James C. Newman
Compression pre-cracking methods [3] were used to initiate cracks at crack-starter notches with constant-amplitude and load-reduction methods used to generate data from threshold to fracture.
Figure 1(a) shows the ΔK-rate test data, and Figure 1(b) shows the ΔKeff-rate data using a plane-strain constraint factor (α) of 1.8.
The term q = 2 was selected to fit high-rate data.
Figure 3(b) shows the test data (symbols) and the predicted results.
The symbols show test data and the curves show life predictions.
Online since: June 2014
Authors: Takeshi Iwamoto, Nobuhiko Kii, Tomasz Jankowiak, Alexis Rusinek
A Study on Reduction of Friction in Impact Compressive Test Based on The Split Hopkinson Pressure Bar Method by Using a Hollow Specimen Nobuhiko Kii1,a, Takeshi Iwamoto2,b, Alexis Rusinek3,c and Tomasz Jankowiak4,d 1Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8527 Japan 2Institute of Engineering , Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8527 Japan 3National Engineering School of Metz, 1 route d’Ars Lquenexy, CS 65820 57078 Metz Cedex 3, France 4Institute of Structural Engineering, Poznan University of Technology, Piotrowo 5, 60-965 Poznan, Poland am124931@hiroshima-u.ac.jp, biwamoto@mec.hiroshima-u.ac.jp, crusinek@enim.fr, dtomasz.jankowiak@put.poznan.pl Keywords: Split Hopkinson pressure bar, Impact compression, Hollow specimen, Reduction of friction coefficient, Johnson-Cook model Abstract.
In addition, reduction of friction effect is attempted based on the experimental and computational studies using ring specimen made of steel and aluminum alloy [6].
Table 2 Material parameters identified from the experimental data until the plastic strain of 0.15 A [MPa] B [MPa] n C m 83.5 28.03 0.34 0.012 0.68 Table 3 Material parameters identified from the experimental data until the plastic strain of 0.3 A [MPa] B [MPa] n C m 83.5 13.85 0.0463 0.012 0.68 5.
That is, it can be considered that friction effect is decreased by a reduction of the contact area.
Online since: July 2014
Authors: Yu Mu, Gui Min Sheng, Hong Xia, Pu Nan Sun, Yan Qian
A parameter reduction method based on fuzzy rough sets was proposed.
Fundamentals on Fuzzy Rough Sets A structural data used for classification learning can be written as an information system, denoted by , where U is a nonempty and finite set of samples {x1, x2 ,..., xn}, called a universe, A is a set of attributes (also called features, inputs or variables) {a1, a2, ... , am} to characterize the samples.
The objective of rough set based attribute reduction is to find a subset of attributes which has the same discriminating power as the original data and has not any redundant attribute.
Fig.2 Dependency Function There are 6 parameters in the reduction set.
A forward greedy search algorithm is proposed for attribute reduction.
Online since: December 2009
Authors: D. del Pozo, J.M. Etayo, Luis Norberto López de Lacalle, Aitzol Lamikiz, Eneko Ukar, F. Liebana
The Laser Polishing tests results have been used as the input data for a design of experiments (DoE), therefore the optimum operation parameters for the process as well as its degree of influence in the melted surface have been defined.
Maximum roughness reduction parameters with CO2 laser.
Maximum experimental roughness reduction with HPDL laser.
Therefore, for the same material and similar roughness reduction rates, the influence of the laser type is relevant.
Conclusions The laser polishing process, in tool steel DIN 1.2379, allows roughness reductions over the 80 percent.
Online since: January 2012
Authors: Jun Fa Wang, Gui Fu Wu, Dong Hua Jiang, Dong Wei Shao
The digging spring tooth for corn stubble harvester including self-exited vibration S-shaped spring handle and curved chisel-shaped bionic tooth is designed based on the mechanism of drag reduction of self-excited vibration and bionic drag reduction for reduce digging resistance and power consumption, and the statics analysis of digging spring tooth is done by ANSYS software, the stress and strain distribution diagrams show the design is reasonable.
Design of self-exited vibration S-shaped spring handle In order to reduce the engine power consumption and the digging resistance, the self-exited vibration S-shaped spring handle is designed by the research of drag reduction mechanism of self-excited vibration, as the figure 1 shows.
When the handle is forced, it can generate restoring force and can make the whole spring-tooth vibration to achieve the purpose of reduction tractor-drawn resistance.
Based on the above analysis and the depth research of bionic drag reduction mechanism, the bionic tooth of the excavating spring tooth is designed by the measuring results of claw curved contour shape and the prototype of the front foot middle toe of field mice, as the figure 3 shows.
Table .2 Pressure datum of soil to two teeth with different α(KPa) wedge angle α pressure 25° 560 35° 721 Table .3 Pressure limit data of excavating spring-tooth MPa stress wedge angle α=25° wedge angle α=35° Max. value 570 573 Min. value 0.177 0.182 Table .4 Distortion limit data of excavating spring-tooth (mm) displacement wedge angleα=25° wedge angleα=35° Max. value 17.498 17.172 Min. value 0 0 Fig.6 Stress contour of excavating spring tooth when is 35° Fig.5 Stress contour of excavating spring tooth when is 25° As can be seen from the overall stress distribution of excavating spring tooth, the stress is mainly distributed in the elastic handle and bionic tooth engagement end the circular position of radius 30mm, and stress increases with wedge angle increasing; the maximum stress value is 573 MPa when the α is 35°, and the maximum ultimate strength of excavating spring tooth is 735 MPa, so the spring tooth strength meet the design requirements.
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