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Online since: June 2023
Authors: Ogunleye Ojo Olugbusi, Taiwo Ebenezer Abioye
Optical metallography and electron backscatter diffraction (EBSD) technique were used to characterize the grain structure of B4C particulate reinforced materials matrix composite produced via friction stir welding.
Rajakumar and Balasubramanian [16] has predicted the empirical relationship between weld nugget grain size, weld nugget hardness and tensile strength of friction stir welded AA 1100 aluminum alloy joints.
Mean SN Ratio= Tn (2) Where T is the total signal ratio for a factor and a level while n is the number of experiment Table 5.
This resulted in formation of larger grains and then a lower hardness at the rotational speed of 1400 rpm.
“Correlation between weld nugget grain size, weld nugget hardness and tensile strength of friction stir welded commercial grade aluminum alloy joints”, Materials and Design.
Online since: September 2014
Authors: Xue Song Xi, Qiu Yun Huang
There are a growing number of young people taking off the traditional clothing, moving out from the village to find a job in the city.
Table 2 Key elements in the sense of Productive Landscape Process Landscape process Key elements in its specific scenes Ecological services Current situation Ecological Process Terraced fields Cultivating paddy fields, keeping fish, loach and snail, breeding livestock and poultry Magnificent Field shacks Keeping livestock and poultry in the first floor, facilitating space for resting in the fields neglected Flume Mountain brook interception, Terraced filed irrigation In disrepair & neglected wood flow restrictors Using the scarcely water thriftily, fairly and efficiently neglected Watermill Rice milling In disrepair & discarded Flat roofs of Mushroom House Cereal drying neglected Moqiu Square Public sunning ground for cereal drying neglected Granary Containing grains neglected Fig. 5 Problems currently existing in the productive landscape process Daily & Social Life Landscape Process.
The scenes were divided into three types, i.e. scenes performing the composite terraced field utilization model of labor process, scenes of Hani people’s agriculture water use system, and scenes presenting the process dealing with grains.
Throughout the year Edges Edges of Fields Districts Terraced fields area Marks Terraced fields, Field shacks     Agricultural water use scenes Flume, Wood flow restrictors Space type Positive space Users Hani famers Educational Profile Forest Functions Flumme for water interception, irrigation Wood flow restrictors for using the scarcely water thriftily, fairly & efficiently Undersurface The terraced field besides the flume Working time Throughout the year Edges Edges of Terraced fields Districts The terraced fields area besides the flume Marks Flume, Wood flow restrictors     Watermill Space type Positive space Users Hani famers Educational Profile The facades of Mushroom House Functions Rice milling Undersurface The routes in the village Working time Throughout the year Edges The intersecting line between Mushroom facades and the ground Districts The ground surround the watermill house Marks Watermill and the watermill house     Scenes of Hani people’s dealing with grains
Flat roofs of Mushroom House, Granary Space type Semi-positive space Users Hani famers With a flavor of rural life & Educational Profile Grass roof Functions Cereal drying, grains storage Undersurface Flat roof of ‘Mushroom’ house Working time Throughout the year Edges The intersecting line between grass roof and the flat roof Districts Flat roof area Marks The flat roof on the ‘Mushroom’ house with heaps of grains     Moqiu Square Space type Positive space Users Hani famers With a flavor of rural life Profile Forest Functions Public sunning ground for cereal drying Undersurface Lawn Working time Throughout the year Edges The intersecting line between lawn and forests Districts Moqiu square area Marks Moqiu Square, ‘Qiu’ House     Productive Landscape Security Network Regeneration.
Online since: October 2016
Authors: Arantzazu Valdés García, María del Carmen Garrigós Selva
The flavan rings are labelled A, C, and B, respectively, with a systematic numbering of carbon atoms.
In this context, Figure 8 shows the number of published papers obtained when the term “antioxidant” and “microencapsulation” are introduced together in Scopus scientific database [57].
Also, one main limitation is the number of wall materials currently available which must be soluble in water, have low viscosity at high solids concentration and show adequate film forming properties [6].
Antioxidant properties of diverse cereal grains: A review on in vitro and in vivo studies, Food Chem. 196 (2016) 90-97
Phenolic compounds in cereal grains and their health benefits, Cereal Food World. 52 (2007) 105-111
Online since: May 2012
Authors: Ling Yun Meng
Regarding the micro-crack appearance, especially important is the bond zone, between bulk cement paste and inclusion (aggregate/sand grain).
The total number of lattice sites is chosen as equilateral, which provides an easier running of the averaging analysis in the presence of bigger solid particles.
Collision rules and number of collisions do not influence the basic macroscopic equations since all equations have been derived independently on the collision rules.
We first start with the introduction of small size solid-clusters (20 x 20 lattice sites) in the 0.01% of the total number of lattice nodes.
Acknowledgements This work was financially supported by An Hui province-level Natural Science project for the period of 2009-2010(project number:KJ2009B079Z).
Online since: February 2013
Authors: Wen Hua Tang, Lian Hong Yu
The testing results of 100 households formaldehyde The results Housing number (GB/T18883—2002) Formaldehyde concentration range (FC is abbreviation) Up to standard 26 FC≤0.08mg/m3 Slight pollution 19 0.08<FC≤0.25mg/m3 Moderate pollution 31 0.25<FC≤0.50mg/m3 High pollution 18 0.50<FC≤0.8mg/m3 Serious pollution 6 FC>0.8mg/m3 Table 2.
Preliminary statistics of formaldehyde concentration influence factors of 100 households The testing results Housing number Influence factors Vacant housing ventilation time Wall treatment mode Quantity and quality of various furniture boards Decoration modelling style More than six months Less than six months Brush latex paint Paste Wallpaper Field fabrication furniture Buy furniture Simple Complex Up to standard (26) 14 12 18 8 12 14 21 5 Slight pollution (19) 9 10 14 5 6 13 17 2 Moderate pollution (31) 8 23 24 7 19 12 10 21 High pollution (18) 1 17 6 12 12 6 2 16 Serious pollution (6) 0 6 2 4 2 4 1 5 Seen from table 2,the preliminary conclusion is that formaldehyde pollution is the result of the integrated effects of many factors:vacant housing ventilation time,decoration modelling style, wall treatment mode, and the quantity and quality of various furniture boards;Any of these factors are likely to cause high levels of formaldehyde, only each factor
Active carbon adsorption.This method' advantage is easy to use, active carbon not only can absorb formaldehyde, but also can absorb other pollution gas.When using it,had better choose small grain;The smaller the particle is , the better the adsorption results are.This method can achieve best effect in a small scope or a little space,for example, directly put the activated carbon packet in the bedroom closet, shoe cabinet, bookcase, hutch ark and so on.But be careful that it is not obvious that activated carbon adsorb formaldehyde in pollution serious room, because activated carbon is easy to reach saturation,so in the use of about five days, it need regeneration in the sunshine for 3~5 hours, generally its adsorption effective period is 5~8 months.
Acknowledgment The study was supported by The Ministry of Housing and Urban-Rural Construction 2012 Science and technology projects ( project number:2012-K1-37 ),Hubei Provincial Department of Housing and Urban-Rural Construction 2011 science and technology project ( project number:140),and Wuhan Jubikang indoor environment test center.
Online since: January 2013
Authors: Shinichi Furusawa, Yuusuke Koyama
. , (3) Here, N is the number density of the carrier, Ze is the charge of the carrier, a is the hopping distance, Γ0 is the attempt frequency, Δ is the activation energy, and f is a correlation factor whose value is approximately 1.
The changes in inclination of the other crystals are relatively smaller but this is thought to be caused by the existence of grain boundary.
This corresponds to the increase of the number of mobile lithium ion.
The decrease in the number of zinc ion occupying A-site may lead to the drastic increase of lithium ion conduction path.
This drastic increase of the electrical conductivity may be due to the decrease in the number of zinc ion occupying A-site.
Online since: August 2014
Authors: Xi Xi He, Xing Ming Liang
Thermal performance is significantly influenced by holes of block and thermal resistance increases as number of hole-rows increases [2] [[] Chao Teng, Qi Yang, Hong Peng.
Numerical thermal optimization of the hole structures of pottery grain concrete hollow blocks [J].
Table 1 Test results of thermal experiment of different walls Wall type Masonry unit type Block size /mm Wall size /mm Walls made of natural aggregate concrete Walls made of recycled aggregate concrete Specimen number Heat transfer coefficient / W/m2•K Specimen number Heat transfer coefficient / W/m2•K 1 Solid concrete brick 240×115×53 240×1000×1000 1N 3.22 1R 2.92 2 Concrete hollow block 390×190×190 190×1000×1000 2N 2.89 2R 2.31 3 Concrete hollow block filled with  insulation material 390×190×190 190×1000×1000 3N 2.10 3R 1.76 4 Load-bearing thermal insulation block 390×310×190 310×1000×1000 4N 1.41 4R 1.21 Gravels from Hebei Sanhe were used as natural coarse aggregate, while recycled aggregates with a maximum aggregate size of 10mm were composed of obsolete clay brick and recycled concrete produced by Beijing Shijingshan Recycled Aggregate Factory.
Acknowledgements This work was financially supported by National Sci-Tech Support Plan in the 12th Five-Year Plan of Rural Area, Project Number: 2011BAJ08B02-02-01.
Online since: March 2012
Authors: Shuang Shi Zhang, Xu Ben Wang, Wei Hua Wang
Proportional Integral Derivative Controlled object y(t) u(t) e(t) r(t) + – + + + PID controller Fig.1 PID Control System Schematic Multi-core Parallel Genetic Algorithm (McPGA) The McPGA is executed by the multi-core platform with a coarse-grain multithreading parallel model [2].
Generally, the number of threads is equal to that of cores for load balancing.
In our numerical experiments of tuning of PID parameters, use real - coded method, for Kp, Ki, Kd, are all real numbers.
What is more, compared with binary – coded method, real - coded has such advantages as, better for population stability in mutation operations, easier to use avoiding complex operations of encoding and decoding, reducing the calculation time and making higher search efficiency, suitable for larger and higher precision number, larger genetic search space, also avoiding the binary code of the “Hamming cliff”.
Crossover operator is defined according to Eq. 6, , (6) where v1’ and v2’ are descendants, v1 and v2 are cross parents, is a random number in interval [0,1), the probability of crossover operation is Pc=0.6.
Online since: January 2012
Authors: Rui Ling Qi, Hui Juan Liu, Lin Gao, Man Xue, Ding Shen
Starch with low cost is readily biodegradable, however, it derived from grain.
T/C(65/35) yarn with a yarn number of 19.6tex was sized by the grafting modified sesbania gum using a GA391 single yarn sizing machine(China).
Hairiness length [mm] 1 2 3 4 5 6 7 8 Index of hairiness [hairiness numbers/10m] Sized yarn 63.31 27.17 6.9 2 0.02 0.02 0.01 0 Base yarn 62.48 47.06 8.52 2.34 0.04 0.03 0.04 0 Acknowledgement The project of this thesis is supported by the funds from Henan Education Department (serial number: 2008A540002) and the funds from Science and Technology Bureau of Kaifeng (serial number: 09112).
Online since: July 2012
Authors: Qin Li, Xing Ye Su, Hong Mei Wang
The high local peak stress and repeated actions will make the grains in material slip, dislocate, and gradually form small cracks. , Under the continuous cycle load, the cracks can further expand and form the macro fatigue crack throughout the entire thickness of the wall, which will eventually lead to the container fatigue fracture.
(2) According to the interpolation formula in table C-1 of the JB 4732 (confirmed in 2005): (3) Allow recycle number N was derived: N = 116800 times Allow recycle number N > expected recycle number n.
As described in the criterion A, when the number of cycles exceed 1000 times, the fatigue analysis must be done.
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