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Online since: February 2008
Authors: Jan Ma, H.H. Hng, L. Yang, T. Sun, H. Cheng
The first chemical reaction can be written as: CoCl2·6H2O + 2NaBH4 →Co +2BH3+2NaCl + H2 (1) 3SbCl3 + 9NaBH4 → 3Sb + 9BH3+ 9NaCl+ 9/2H2 (2) In the beginning of the experiments, the reduction of Co 2+ and Sb3+ ions should be fast and completely due to the strong reducing effect of NaBH4.
Powder X-ray diffraction (XRD) data of the final products were collected on a Shimadzu standard diffractometer using Cu Kα radiation (λ = 0.15406nm).
Quantitative phase analysis of the XRD data was conducted using the fundamental parameter Rietveld procedure as implemented in TOPAS (version 2.1).
A reduction in concentration of reactants did play a part in improving the yield of CoSb3.
The yield of CoSb3 increased with reduction of the concentration of starting materials.
Online since: January 2004
Authors: P.E. Mijnarends, A. van Veen, S.W.H. Eijt, Marc H. Weber, Arun Bansil, B. Barbiellini, Kelvin G. Lynn, A.B. Denison, R. Meulenberg, C. Fischer
We focus here on the behavior of the average radial EMD, which is found to show an increase in the low-momentum range (<0.6 a.u.) and a reduction in the high-momentum range (>1.6 a.u.)
In addition, the data indicate that the changes observed in the low- and high-momentum regions for the quantum dots in comparison with bulk annihilation spectra can be systematically explored.
The arrows indicate the systematic broadening above the Jones zone momentum (~0.8 a.u.) and the reduction in the high-momentum range (see also Fig. 2).
Discussion: The present high-statistics 2D-ACAR data show a clear deviation of the quantum dot EMD (for all sizes) from the measured bulk spectrum.
Secondly, an increase of EMD at low momenta with a concomitant reduction at high momenta could result from a weak localization of the positron at Cd vacancies.
Online since: December 2012
Authors: Wen Ling Mo, Yuan Liang Li, Yu Zhu Zhang, Li Mei Jiang, Jin Gang Liu, Qing Jun Zhang
Results and discussion Based on multifractal algorithm and the pressure mercury meter experimental data, in the same experiment conditions, different basicity of low silica sinter samples 1#-5# sample pore distribution situation of the multifractal analysis.
The data α and f(α) from Figure 2, multifractal spectrum width Δa and multifractal corresponding fractal dimension difference Δ f (α) can be obtained for 1 # - 5 # sample, and the results are shown in Table 3.
Fig.2 Multifractal analysis result of the low Fig.3 The relationship between R and silicon sinter pore distribution of different R metallurgical properties Table 3 Multifractal parameters of test sample pore distribution Figure 3 is the relationship of sinter basicity and metallurgical properties, the diagram shows, the low temperature reduction degradation and reducibility of low silicon sinter, with the rise of basicity has the tendency of increase gradually, due to the load softening performance initial temperature is higher, the interval more narrow and more better, from Figure 3 shows its performance with the rise of alkalinity deterioration.
Moreover, sinter crack generally occur in skeletal shape secondary hematite crystal concentration place, around hematite, hematite internal and glass phase has more stomata, changes can ease the hematite to magnetite restore phase transition at low temperature, prevent crack diffusion, and then reduce the low temperature reduction degradation rate, improve the performance of low temperature reduction degradation.
Online since: September 2017
Authors: Jan Sobotka
During earthworks designing can be used these new data.
The basic documentation for the elaboration of the project documentation is the quality geodetic data, including the elevation data of the locality.
Because a designer needs for designing data from vast space (square kilometers), it is appropriate to use this elevation data.
But there are many other areas of use of these elevation data.
This solution leads to a reduction in their budget.
Online since: January 2015
Authors: Yuan Liu, Ming Ji, Jia Ning Wan, Fei Wang
It is a core task in machine learning and data mining and has been intensively studied on static data.
The static data refers to the data whose feature values hardly or do not change over time.
Generally speaking, some try to modify the existing clustering methods for static data to handle the time series data, while others convert time series data to the form of static data so static data clustering techniques can be directly applied.
Clustering of time series data--a survey.
Discovering clusters in motion time-series data.
Online since: November 2025
Authors: Tariq Jamil, Muhammad Hateem Arif
Compared to the results of baseline steel shaft, Carbon fiber, Hemp fiber and Carbon-Bamboo fiber configurations demonstrated a mass reduction of 75.71%, 80% and 77.5%, respectively.
The results indicated a significant reduction of 78% weight with better performance in torsional stability.
Material Optimization and Weight Reduction of Drive Shaft Using Composite Material. vol. 10. n.d
Design and Analysis of Leaf Springs for Weight Reduction by Using Natural Fiber Composites Instead Of Steel. 2017
Tractor power take-off torque measurement and data acquisition system.
Online since: May 2019
Authors: Xiao Yan Tang, Ren Xu Jia, Yu Ming Zhang, Li Xin Tian, Wen Ting Zhang, Ling Yi Kong, Xin He Zhang, Ji Chao Hu, Ying Xi Niu, Fei Yang, Liu Zheng
Process optimization resulted in reduction of the density of triangular defects from 1.01 cm-2 to 0.14 cm-2.
The time of in situ etching prior to growth was optimized to establish the condition for triangular defect reduction and smooth morphology.
The 6500 V Junction Barrier Schottky diodes were fabricated on the characterized wafers to gain statistical leakage data to prove the quality of the epitaxial layer.
The in-situ etching process for the substrate prior to epitaxial growth is quite helpful for the reduction of the defects, which can also reduce the surface damage and stress.
Kordina, Reduction of structural defects in thick 4H-SiC epitaxial layers grown on 4° off-axis substrate, Journal of Applied Physics,113(2013) 223502-223508
Online since: November 2013
Authors: A. Kiet Tieu, Hong Tao Zhu, Gerry Triani, Bing Jing Lin, Bu Yung Kosasih
In order to convert ∆ and ψ to the thickness of the film, the experimental data obtained from the Ellipsometer were fitted with a theoretical model, which is based on the composition and structure of the surface layers, in Sopra WinElli 4.07 software via a global regression of the functions [Cos (2ψ) & Sin (2ψ) × Cos (∆)] with the Levenberg-Marquardt method of regression.
The largest reduction (27.50) of water contact angle was found on a silicon wafer surface absorbed by copolymer 17R4, while the adsorption of copolymer 17R2 on iron surface caused the smallest decrease (8.90).
The copolymer 17R2 had the least effect on the reduction of the contact angle, followed by 25R2 and 17R4.
However, the difference between copolymer 17R2 and 25R2 was small on the reduction of the contact angle, 1.00 on the silicon wafer surface and 3.40 on the iron surface.
In the whole range of the wavelengths, the curves based on the theoretical model shown in Fig.1 (a) fits well with the experiment data through the regression of the functions [Cos (2ψ) & Sin (2ψ) × Cos (∆)].
Online since: September 2013
Authors: Ahmed Jaffar, Ahmad Adnan Naufal, Nurul Hayati Abdul Halim, Yusoff Noriah
Findings from the results show that the company has achieved high productivity, minimal space utilization as well as reduction in number of direct manpower.
The reduction of working area through the re-layout activity has helped the operators in increasing their performance and efficiency of the line by focusing more on value added tasks rather than walking and searching for components.
The result shows a notable improvement such as increased productivity, reduction of space utilization as well as number of operators required.
Motwani, Successful implementation of TPS in a manufacturing setting: A case study, Industrial Management and Data Systems. 97 (1997) 274-279
Mohamed, Flow manufacturing – necessity, benefits and implementation: A case study, Industrial Management and Data Systems. 102 (2002) 73-79
Online since: June 2014
Authors: B.T. Hang Tuah bin Baharudin, Zulkiflle Leman, Nazrul Idzham Kasim, Mohd Azam Musa
The objectives of this project are to eliminate the root cause of cab defect and to streamline the transfer process with the reduction of process cycle time.
Changeover / Setup Reduction Changeover means a certain kind of set-up that we must make before beginning a different set of operations.
All data are collected during the trial run to be analyzed later.
If the data analysis shows an improvement in the quality issue and reduce the cycle time, the project proceed with the next step which is the execution of the new process design permanently.
The time reduction is important factors for the cab transfer process as close to the cycle time of 7 minutes for GA production line and the cycle time for the current cab transfer process is 9.77 minutes.
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