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Online since: April 2016
Authors: De Tao Liu, Fan Cheng, Yu Hao Jiang, Jin Bo Chen, Peng Bo Lu, Ling Feng Su, Fan Zhe Yu
This new building material with no resin use and no formaldehyde release is expected to be reserved as the sandwich for designing thermal insulation & noise reduction building materials.
Atomic Force Microscopy (AFM) analysis was conducted to observe for the cellulose fibers surfaces using by Veeco Di Multimode SPM instrument, AFM scanning was carried out in air by contact AFM mode, and the other conditions were that radius of curvature of 10-20 nm, scanning rate of 0.2999 Hz, scan size of 5.000 um and data scale of 100.0 nm;Py-GC-MS analysis was conducted to observe for the chemical bond conditions in cellulose fibres using by GCMS-QP2010 Plus, Rxi-1MS chromatographic column, CDS5150 pyrolyzer, Gas chrmatograph Mass Spectrometer, SHIMADZU, C70504500919AE, Pyroprobe 5000 series.
The binderless sandwiching materials with 80-100 kg/m3 have a NRC (Noise Reduction Coefficients was 0.5-0.7, and an average acoustic absorption coefficient measured at 125 Hz, 500 Hz, 1000 Hz and 2000 Hz was 0.4 - 0.6, and have the thermal conductivity of 0.05 - 0.06 kcal/mh·℃.
Online since: January 2012
Authors: Wilson Wong, Eric Irissou, Phuong Vo, Jean Gabriel Legoux, Stephen Yue
It was observed at 600 and 800°C anneals that a coating hardness reduction occurred, possibly due to static recovery and recrystallization, with minor sintering possibly occurring at the 800°C anneals.
Static recovery is defined as the reduction or removal of strain hardening effects [6] as a result of enhanced atomic diffusion at an elevated temperature which relieves some of the stored internal strain energy by virtue of dislocation motion in the absence of an externally applied stress [7].
Although microhardness data were not available for the heat treated coatings produced with BM and HT powders, similar results are expected.
Online since: December 2012
Authors: Jun Li Li, Jian Lin Mao, Geng Yun Yin
This method was easy to get basic data and evaluation results fitted the actual.
The best projection direction of the sample data determined the weight of evaluation index.
Namely, reduce the dimension of high-dimensional data to select the evaluation index.
Different projection directions reflected the different characteristics of the data structure.
The weights of evaluation index were determined by the characteristics of the data.
Online since: June 2025
Authors: Jiang Andi, Xue Xing Ding, Da Peng Yan, Chao Jun Deng, Zhi Hai Yang
(4) The contact pressure is uniformly distributed across the contact area of the sealing surface. 2.3 Establishment of fractal contact model The surface topography data of the test piece were extracted using a surface topographer.
The accuracy of the theoretical model was validated by comparing the calculated leakage rate with experimentally obtained data, as shown in Figure 9.
Consequently, the final contact area approaches the nominal contact area. 5.2 Leakage flow characterization Based on the porosity results of the contact theory and the experimental data, the corresponding leakage fluid domain is constructed and the flow field simulation and leakage rate calculation are performed.
This reduction stems from enhanced contact pressure between the sealing ring and surface, which strengthens the sealing effect and impedes fluid penetration.
However, once a critical load threshold is reached, the contact area stabilizes, and further increases in load have diminishing effects on leakage reduction.
Online since: July 2011
Authors: Dong Mei Li
According to geological engineering data form the engineering exploration drilling and testing company, the geological is divided into several layers from top to bottom as such: plain fill, silty clay, sandy& clay, clay, diorite and limestone[1].
The overall stiffness reduction factor is 0.5.
Where the overall stiffness reduction factor is 0.5 Review of the force of steel sheet pile: According to the results it shows that the maximum bending moment steel sheet pile is: 511.56kN.m.
Online since: May 2011
Authors: Ben Ping Lin, Yan Lan Liu, Ke Fu Chen
And a lack of data on application of Mg(OH)2 to peroxide bleaching of non-wood fibres still exists.
The presence of a strong alkali could facilitate cellulose degradation and caused the reduction of viscosity of the bleached pulp.
Therefore, the costs associated with effluent treatment would be significantly decreased with the substantial reduction of COD.
Online since: January 2013
Authors: Hong Hao, Wen Su Chen
This is because the multi arches cancel out certain blast loads at supports of two adjacent arches and lead to a reduction of the loads transferred to the inner panel and the panel boundary.
The calibrated numerical model [1] validated by the experimental and numerical data in [7] are used to carry out the simulations in this study.
Table 1 Displacement, internal energy, reaction forces and plastic strain Panel Displacement of Flat Layer (mm) Internal Energy (KJ) Reaction Force (105N) Plastic Strain Peak Permanent Reduction Ei-1 (arched) Ei-2 (flat ) Ei-3 (stiffener) E (Total) Fx Fy Fz   UU 16.7 14.5 - 5.5 3.4 - 9.4 2.19 2.94 2.06 0.27 SS 19 7.2 50.30% 5.7 2.1 2.4 10.4 2.13 2.49 1.78 0.12 As shown in Fig. 3(a), high plastic strain of the unstiffened panel “UU” occurs at the intersection line where the arched layer is welded to the flat layer.
Online since: November 2011
Authors: Islem Benhegouga, Ce Yang
In all of this application there are strong requirements for small dimensions and large energy concentration because the compliance with these requirements is equivalent to a reduction of manufacturing costs and weight.
Table 1, Impeller geometrical data Item Value Blade number main blade 13 splitter blade 13 Design speed n/( r•min–1) impeller tip speed (m/s) design mass flow rate(Kg/s) 50000 586 2.55 Inlet hub radius/(mm) 30 Inlet tip radius/(mm) 78 Exit radius/(mm) blade angle leading edge tip(deg) 112 26 blade angle trailing edge (deg) 52 Figure 1 shows a schematic of the injectors used in this study. 13 cylindrical injectors with radius of 3mm were placed at short distance 10% of the inlet tip radius upstream, the injection angle was 15 degree.
Murray, in: Reduction of bleed valve rate requirements for control of rotating stall using continuous Air injection, Proceedings of the 1997 IEEE International Conference on control applications, (1997), p. 683-690
Online since: June 2012
Authors: Jia Xuan Liao, Sheng Kai Fan, Xiong Bang Wei, Sheng Hua Hu, Jian Yu
According to the actual test data derive the model parameters can get a more accurate model results and closer to the real condition, the better response to the grid line parameters and cell performance.
In this range, the reduction of three buses cell efficiency is very mall, similar to the peak efficiency range is large, three buses cell efficiency is less sensitive to the shading area.
The efficiency and series resistance and shadow factor as a function of the finger width Fig.3 presents that with the reduction of the finger width, cell efficiency first increases and then decreases.
Online since: May 2011
Authors: Wei Sheng Liang, Jian Cai
This enables the reduction of required dimension and amount of reinforcement of the beam.②Compared with truss-type transfer system, the impact of haunching braces is less on the net vertical clearance of transfer story therefore it provides more flexibility in structural layout.③Compared with transfer system with inclined columns, this system does not require full span inclined columns and therefore enables the utilization of space under haunching braces.
Based on statistical analysis of test data and historic seismic damage information, the relationship between floor elasto-plastic angular displacement and damage mode classification can be expressed as Table 1[4].
Reduction factor of the fundamental periods of the structure is 0.7s.
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