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Online since: October 2012
Authors: Wen Sheng Dong, Xiu Fang Jiang, Ying Ying Zai, Xian Feng He
The phenomenon of "bottom tearing scour" has aroused great concern for water workers at domestic and foreign and obtained a large number of research results.
The sampling positions table Number Name of the sampling cross-section Sampling position coordinates or engineering positions E N Ⅰ The upper layer of Yellow River left bank No. 67 sedimentation cross-section Dashizui engineering Ⅱ The lower layer of Yellow River left bank No. 67 sedimentation cross-section Dashizui engineering Ⅲ Yumengko No. 68 sedimentation cross-section of Yellow River left bank 110°36′06.9″ 35°39′30.4″ Ⅳ Yumengko No. 68 sedimentation cross-section of Yellow River right bank 110°35′40.5″ 35°38′27.4″ Ⅴ Lang dian engineering 4 No. dam of Yellow River left bank sedimentation cross-section 110°21′34.5″ 35°05′47.1″ Ⅵ The 50 cross-section of Yellow River right bank sedimentation cross-section Hua yuang engineering opposite the new beach The soil particle-size analysis experiment:In the experiment, using sieve analysis to select part of the particle size greater than 0.075mm; using  hydrometer method to select part of particles size less than 0.075mm, using sodium
Moisture content as the abscissa, cone sink depth as the vertical axis, draws a relationship curve in the double logarithmic graph paper, getting respectively fine-grained soil liquid limit, plastic limit, by calculated the plasticity index in turn divided into the soil type.
Online since: April 2012
Authors: Qian Wen Dai, Zi Li Liu, Cui Xia Xu, Chao Xiang, Jian Jie Zhang
HPW and CsHPW are highly dispersed in the SiO2 at the low loading, while the loading is more than 40%, the catalyst grains increase and gather on the surface of the carrier.
On some supports, the heteropoly structure is retained but the smaller particle size allows access to an increased number of surface protons.
Online since: December 2018
Authors: A.A. van Well, Chrysoula Ioannidou, S. Erik Offerman, Arjan Rijkenberg, Zaloa Arechabaleta, Robert M. Dalgliesh
Integration of DN(R) gives the precipitate number density.
The (dΣ/dΩ)NUC at low Q values is attributed to scattering from large objects like grain boundaries, dislocations [6], and large precipitates.
The number density of Fe atoms is NoFe = 84.9nm-3, calculated using Eq. 4.
After 20min, the precipitate number density decreases while annealing, indicating that the coarsening process is taking place.
a) b) c) Fig. 4 Precipitate a) mean radius, b) number density and c) volume fraction evolution during annealing at 650oC.
Online since: May 2020
Authors: N. Sandeep, S. Sivaiah, Kempannagari Anantha Kumar, Vangala Sugunamma
It was concluded that the Eckert number and the Biot number has a tendency to enhance the distribution of temperature.
(ii) Ohmic heating and magnetic Reynolds number are very small.
Generally, Prandtl number is the ratio between momentum and thermal diffusivities.
Generally, radiation is a heat transfer mechanism which procures the energy via liquid grains.
· Heat function () and Eckert number are straight proportional to each other
Online since: January 2011
Authors: Sheng Ling Xiao, Hong Lin, Xiao Dan Shi
It not only can make a shock-proof liner, but also can replace EPS to make production of grains and objects which have fairly effect with basic EPS.
Drying Heat Foaming Gating Compression molding Cushion material Adhesives, Catalyst and other additives Cross-linking agent Dry wood residues Pretreatment Stir mixed Cross-linking reaction Foaming agent Fig.1 The process of preparation of wood fiber cushion packaging material Fiber pretreatment: There is numbers of polar functional groups in wood fiber surface.
Test program established by the uniform design Group Wood fiber: Starch x1 AC Content x2 [%] PVA Content x3 [%] Uniform Performance parameter N1 2 4 4 Centered Deviation CD=0.1554 L2-Discrepancy  D=0.0560 Correction error MD=0.1921 Symmetric Discrepancy SD=0.4416 Wrap-around Discrepancy WD=0.2702 Condition Number C=1.1429 D-Optimal Property =0.0006 A-Optimal Property =0.2589 N2 3 4 2 N3 3 1 4 N4 1 3 4 N5 2 2 3 N6 1 4 1 N7 3 2 1 N8 2 1 1 N9 1 1 2 N10 2 3 2 N11 1 2 3 N12 3 3 3 P.S.: The smaller of the uniform performance parameters, the better of the test program.
Online since: January 2011
Authors: Qian Qian Dai, Jun Liang Liu, Tie Jian Zhang
FAHP Based Comprehensive Evaluation System of Water Environment Security * Supported by State Key Laboratory of Urban Water Resourse and Environment(HIT) , Number:HC200903.
And also supported by Natural Science Foundation of Hebei Province of China, Foundation Number:E2008000348.
From the above-mentioned calculations and analysis, we can see that the first 15 items are forest cover rate, wetlands area proportion of total area, per capita GDP, erosion rate, the rate of industrial wastewater discharge reaching the standard, per capita water resources, the Engel coefficient of rural residents, pollution-diameter rate, the urban sewage treatment rate, per capita grain, the average annual rainfall, per hectare water resources, groundwater quality level, the Engel coefficient of urban residents, proportion of ecological water consumption accounts for water consumption in all 30 index in Table 1.
Online since: May 2012
Authors: Zheng Jun Wang, Jia Bin Liang
Mineral admixtures Application of fly ash Fly ash is collected by boiler flue gas of burning coal in the fine powder, and its grain is spherical shape and smooth surface.
Along with the development of agricultural production, it has a large number of surplus straws [16].At present, most crops straw has become a waste, take up a lot of farmland, or burning in situ, not only wastes a lot of resources, but also seriously pollutes the atmosphere environment.
Acknowledgements The author would like to supports of Education Department of Heilongjiang province (No.12521409, 2012, serial number is 421).
Online since: September 2011
Authors: Hong Fang Tian, Yan Hua Liu, Ying Hong Li
The machine adopts plug-in structure, according to actual needs can be equipped with different number and different types of branch CD, which can reduce the initial investment, also facilitate future expansion, upgrade and maintenance.
Including all kinds of business signal multiplexing into STM - N frame process have to undergo mapping (equivalent to pack), positioning signal (equivalent to pointer adjust), multiplexing (equivalent to byte inserted between small-grained) three steps.
Relatively simple concept of multiplexing, multiplexing is a more low-level access layer to fit into the high-channel signal level or the number of high-end channels into the multiplexed signal adaptation layer over layer.
Online since: July 2011
Authors: G.P Zhang, X.Q Wang, G.H Lv, H Chen, H Pang, L Zhou, J Huang, W Chen, S.Z Yang
With the increase of N2 partial pressure to 90%, the number and size of the micro-particles decreased clearly, which lead to the decrease of surface defectiveness and roughness.
A similar dependence of the number of micro-particles on the nitrogen partial pressure was noticed by J.Bujak[4], in the study on Ti-Al-N deposition process by the cathodic vacuum arc PVD process.
The hardness and Young’s modulus of films depended on the grain material and its orientation.
Online since: November 2012
Authors: Valéria Mertinger, Dávid Cseh
It is probably the reason that only limited examples can be found about the measurement of residual stress by X-ray in an industrial environmental (large number of samples and short cycle length).
The fundamental equation of X-ray diffraction analysis is Bragg’s law, which describes the interrelation between the interplanar distance d, the incident angle θ (angle between the incident beam and the diffracting lattice plane), the wavelength λ of the X-ray used and the order number n of the diffraction.
Residual stress values on the surface of gear Summary The literature explains the effect of the parameters of surface compressing for a given alloy, for example, grain size and speed, the peening intensity on the stress both on the surface and the under the surface.
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