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Online since: January 2010
Authors: J. Nukeaw, K. Amnuyswat, Pitiporn Thanomngam, Suwat Sopitpan, Supanit Porntheeraphat, A. Sungthong
An increasing energy gap from suggested value of InN is related to oxygen incorporate into grain boundary of InN polycrystalline film.
Due to oxygen has higher atomic number than nitrogen thus In-O bond is shorter than In-N bond.
Online since: November 2012
Authors: Chao Wang, Chun Cheng Xu, Yao Guang Qi, Bing Liu, Fen Na Zhang, Jun Han, Xian Yue Xiong
Then, the free ultimate coal particles settling velocity, up0 (it is termed uniform coal particles settling velocity when the resistance is equal to the gravity of the coal particle), can be calculated by the following equation[10]: (1) where g is the acceleration due to gravity, m/s2; d is the diameter of the spherical coal particle, m; ρp and ρf are the densities of the coal particle and the working fluid, respectively, kg/m3; and CD is the coefficient of resistance, which is a function of the Reynolds number of the coal particles.
The median grain diameter of the coal particles is 0.3 mm and the percentage of the coal particles with a diameter less than 0.5 mm is 90%.
Online since: August 2013
Authors: Yuan Xu, Xiao Ping Wang, Juan Cheng, Dong Wang
Construction waste , concrete, brick , gravel and other waste materials into recycled aggregate for concrete block , the number of natural aggregate savings , to maximize the protection of the environment .
Table 1 Aggregate basic performance indicators table aggregate water absorption/ % bulk density /㎏/m3 crush index % modulus of fineness name grain diameter /㎜ pit sand <4. 75 - 2618 - 2.90 crushed stone 4.75~9.5 2.97 2670 11.2 - recycled fine aggregate <4.75 7.03 2420 14.6 2.78 recycled coarse aggregate 4.75~9.5 6.76 2400 15.9 - 2 Experimental Design This test uses Dimensions 190 mm ​​× 190 mm ​​× 190 mm ​​block outer wall thickness of 30 mm , single-hole , for a 190 mm ​​single row of holes block with brick .
Online since: May 2020
Authors: S.M. Aksenova, P.P. Deryabin, M.A. Raschupkina, Yu.S. Danilina
Secondly, the ash grains play the role of fine aggregate, or rather the smallest fractions of this aggregate.
The use of more coarse ash fractions is not recommended due to the fact that they contain a significant number of large inclusions that adversely affect the strength and durability of lightweight concrete.
Online since: June 2014
Authors: Xin Wang
GCMS structure: Samples through interfaces (the interface is the key to the GC system, interface effect: 1 Pressure matching--mass spectrometer ion source vacuum whose pressure matching in 10-3 pa, and GC chromatography column whose outlet pressure as high as 105 pa, the role of the interface is to make both pressure match. 2 Component concentration-- There is a large number of carrier gas in the flow of gas from GC chromatography column, the role of the interface is used to discharge carrier gas, makes analyte concentrated then enter into ion source).
Chinese journal of grain and oil, 2012 [7]LachenmeierDW;NerlichU.
Online since: October 2017
Authors: Avinash Patil, Chutamanut Wongyara, Tarawipa Puangpetch, Kritapas Laohhasurayotin, Preeyaporn Harnkar, Cheewita Suwanchawalit
Sodium dodecyl sulfate (SDS) is anionic surfactant which is often used as a structure directing agent in the synthesis of a number of photocatalytic materials [8-9].
This enhanced crystallite size is due to the coalescence of smaller grains and the high density may be due to the better nucleation rate at higher temperatures [13].
Online since: November 2018
Authors: Tomosato Ida, Shin Ichi Furusawa
As shown in Fig. 1, crystal grains with size of several to several tens micro-meters were growing.
(4) Here, the pre-exponential factor σ0 is a function of the carrier number density, charge of the carrier, hopping distance, attempt frequency and correlation factor, and Δ is the activation energy.
Online since: December 2014
Authors: Hui Ying Chen, Bi Hao Lan, Zhen Tan, Xiang Wen Tong, Xiao Mei Ba
A number of new catalysts have been synthesized for the catalytic synthesis of aspirin, such as heteropolyacid[5,6],solid super acid[4], sulfated zirconia solid super acid[7], zinc oxide, calcium oxide[8], and clay[9].
Apparently, the grain size decrease with the calcination temperature increasing, which is consistent with the results of XRD.
Online since: July 2015
Authors: Ilare Bordeasu, Corneliu Marius Crăciunescu, Cristian Ghera, Ion Mitelea
The surfaces damaged by cavitation presents a varied topography, with big penetration depths of the cavitational erosion, due to massive evictions of ferrite grains.
ACKNOWLEDGEMENTS The support by a grant of the Romanian National Authority for Scientific Research, CNCS – UEFISCDI, project number PN-II-ID-PCE-2011-3-0837 is acknowledged.
Online since: September 2015
Authors: M. Venkateswara Rao
Results of Small punch test & tension test Sample numbers SMALL PUNCH TEST TENSION TEST Pmax mean N No of specimens Rm mean N/mm2 No of specimens Sam-01-new tube 2370 3 427.4 2 Sam-02-serviced tube (a) 2019 3 380.6 2 Sam-02-serviced tube (b) 2134 3 402.8 2 Sam-03-serviced tube (a) 1996 3 355.3 2 Sam-03-serviced tube (b) 2025 3 363.9 2 Sam-04-serviced tube (a) 1880 3 357.4 2 Sam-04-serviced tube (b) 1990 3 374.6 2 Sam-05-serviced tube (a) 1874 3 340.0 2 Sam-05-serviced tube (b) 2014 3 364.9 2 The microstructure of the virgin tube sample reveals that grains of ferrite and perlite whereas the service exposed tube revealed speroidization, presence of fine carbides on the matrix of ferrite.
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