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Online since: September 2011
Authors: Xiao Tian Wang, Xiang Yang Zou, Shu Fan Wang
The Experimental and Theoretical Research of the New Electromagnetic Damper Reduction on Earthquake Resistance and Disaster Reduction Wang Xiaotian, Zou Xiangyang, Wang Shufan (Department of Civil Engineering, Changchun Institute of Technology, Changchun, China, 130012) Keywords:strong magnetic material, electromagnetic damper restoring force model, vibration frequency, motion amplitude value.
Test design results Frequency Amplitude 0.5 5 10 20 30 40 1 5 10 20 30 2 5 10 20 30 3 5 10 20 The test curve results see figure 2 to 4, from the test phenomenon, test process, test data, test curve and references[1,2] can conclude as following: (1) The construct of electromagnetic is simple, its price is low and its high-low frequency is well; (2) The general damper force is increase along with its frequency, the damper force also increase along with its vibration amplitude; (3) The needed detained curve can be received from the change of electromagnetic board and vortex board area; (4) When the temperature has a bit increase, the magnetic intensity is not be influent, and its characteristic is stable
Online since: October 2004
Authors: Hugo Ricardo Zschommler Sandim, Andre Luiz Pinto, J.P. Martins, Angelo Fernando Padilha
Specimens in the deformed state (70 and 92% reductions) were cut out parallel to the RD and vacuum-sealed in quartz glass.
The distributions of the misorientations (ψ) found in each grain were determined from EBSD data.
Two neighbor grains display distinct annealing behaviors even after 92% reduction followed by annealing at 1200 o C for 1 h.
The respective pole figures determined from EBSD data are shown in Fig. 2b.
The EBSD data shown in this work confirms the presence of noticeable orientation effects on recrystallization of oligocrystalline tantalum.
Online since: March 2012
Authors: Muhammad Ahmad, Ihsan Ul Haq, Qaisar Mushtaq, Muhammad Sohaib
Due to the hundreds of bands hyperspectral imaging involves high dimensional data and provides vast amount of data about a scene.
The data is redundant due to the highly correlation between bands.
The efficiency of blindly unmixing of hyperspectral data can be seen from the achieved results.
[5]C.I Chang, Hyperspectral Data Exploitation: Theory and Applications.
[10]Information on: http://speclab.cr.usgs.gov/cuprite.html [11]Muhammad Sohaib, Ihsan-ul-Haq and Qaiser Mushtaq “Dimensional Reduction of Hyperspectral Image Data Using Band Clustering and Selection", in proceeding of Global Congress on Science and Engineering (GCSE 2011)”, Dubai, UAE.
Online since: August 2013
Authors: Cheng Bo Wu, Jin Shui Zuo, Zhi Yuan Kang, Jie Lei, You You He
Characterization Of Preparing Cold Bonded Carbon Bearing Pellets Of Metallurgical Dust For Direct Reduction Jinshui ZUO1, Chengbo WU1, Zhiyuan KANG1, Jie LEI1, Youyou HE1 1College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China gtyj007@126.com Keywords: dust, cold bonding, composite pellet, binder, simplex lattice method Abstract: This paper involves the preparation of cold bonded carbon bearing pellets of metallurgical dust for direct reduction using binder.
The experimental data were statistically calculated by Design-Expert (version 8.0.6).
Characterization of preparing cold bonded pellets for direct reduction using an organic binder [J].
Direct Reduction of cold-bonded pellets [M].
Relationship between the Reduction Degree and Strength of DRI Pellets Produced from Iron and Carbon Bearing Wastes Using an RHF Simulator [J].
Online since: September 2015
Authors: S.B. Arya, Ankit Kanaujia
The total polarization resistance was observed about 5530, 4030, 2465 and 2000 Ohms.cm2 in solutions of 0.4, 0.6, 0.8 & 1.0 M NaCl respectively indicate reduction of film stability at higher chlorides concentration.
Nyquist plot shows a significant reduction of semicircle radius on addition of Cl- ions.
The fitting data tabulated by best fitting method using Randle circuit are shown in Table 2.
These impedance plots clearly shows a high influence of temperature on passivity due to a significant reduction in total passive film resistance (Rp) when temperature increased from 45˚C to 65˚C.
However, reduction of phase angles from 90˚ shows possibility of in homogeneities on the surface of passive films and high pores structure at higher temperature [7-8].
Online since: March 2015
Authors: Roland Golle, Wolfram Volk, Martin Feistle, Michael Krinninger
The utilisation of Press Hardened Components (PHC) made of manganese-boron steels enable weight saving through the reduction of the sheet metal thickness with sufficient component reliability.
This process utilizes a two-step procedure that allows better cutting performance and reduction of wear on the tool.
The material data used and the damage criterion correspond to [6] and were verified as part of this work.
Using the large notch (test series No. 3), the reduction of the sheet thickness is 40 %.
The reduction of the force is at 41.8 % compared to the un-notched component.
Online since: May 2014
Authors: Şakir Bor, G. Ipek Nakaş, Bensu Tunca, Emin Erkan Aşık
Samples with 7 mm x 10 mm x 100 mm were cut from the plate and rolled with a 0.2 mm reduction in thickness in each pass at room temperature.
Strain of the rolled samples were given in terms of reduction in area (RA) since dimension change in transverse direction was found to be ignorable.
Fractional softening, Xh, was calculated using the following equation: Xh = Cold rolled hardness-Recry. hardnessCold rolled hardness -Fully annealed hardness (1) Calculated fractional softening data and quantitatively measured recrystallization fraction data are plotted in Fig. 4 to visualize the relation between them in order to have an indirect but approximate approach to recrystallization kinetics.
Both deformation methods was unable to create crack free samples at room temperature for more than 20% reduction in area.
SEM images of samples swaged to 20% reduction in area revealed that swaging causes a decrease in the recrystallization start temperature.
Online since: June 2010
Authors: E. Ahmad, M. Sarwar, T. Manzoor
Cold rolling with 70% of reduction introduced strain, utilized for re-crystallization during annealing at different temperatures.
Their process was applied to thin strip, 2 mm thick, using hot reductions of approximately 40% to yield a product approximately 1.2 mm thick.
The plates were then cold rolled to a reduction of about 70%, with a final thickness of approximately 1mm.
The EBSD data of 2V and 4V steels after annealing at 650C is presented in Fig. 8, showing similar behaviour of changes in LAGB and HAGB spacings with annealing times.
 EBSD data clearly demonstrated the recovery process by the measurements of HAGB and LAGB spacings.
Online since: August 2014
Authors: Zheng Hui Zhang, Li Qiong Huang, Zhang Long Guo
Apparent activation energy data obtained from linear regression equation As it was displayed, the apparent activation energy decreased by 5.6 kJ mol-1 for the catalyst in which the support Al2O3 was precoated by 5 wt% MgO, comparing to that of NA catalyst.
Pore structure and surface area data of different samples It was observed that there were MgAl2O4 spinel species over the MgO precoated catalysts.
X-ray diffraction profiles of catalysts 3.3 Temperature Reduction Analysis (H2-TPR) There were three reduction peaks for all the catalysts according to the TPR profiles of different catalysts.
The reduction peaks should be ascribed to the reduction of different nickel species.
Temperature and the percentage of reduction peak area data obtained from H2-TPR diagrams It was exhibited in Table 3 that the percentage of the peak β increased as the introduction of small amount of MgO, and then decreased when the amount of MgO loading increased while the percentage of high temperature peak was also increased.
Online since: February 2014
Authors: Sergey V. Safonov, Sergey A. Fateev, Lev S. Logunov, Evgeniia M. Khairullina, Vladimir.A. Kochemirovsky
Von Gutfeld and Kordas explain this effect by exclusively a thermal factor (increase the reaction rate of metal reduction with heat), as well as mixing the solution.
In this work we used a number of polyols with different reduction potentials, including those with negative difference of potentials with copper (II) in the solution.
SEM data for copper structures produced when deposited with different reductants: a) ethanol; b) ethylene glycol; c) glycerol; d) xylitol; e) formaldehyde.
Table 2.Reduction potentials of copper (calculated) for copper complexes with EDTA and tartrate in concentrations used in LCLD.
Consider reduction potentials of reducing agents used in the work and their possible change under heating.
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