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Online since: February 2017
Authors: Tamara Radu
Studies also have revealed other additional important properties of Ni-P coatings obtained by autocatalytic reduction method such as paramagnetic characteristics, high electrical resistivity, semi-amorphous and amorphous structure, nanometre grain size [8, 9].
The lower the pH, the specific reactions of electroless process are slower and thus the number of nickel ions deposited on the steel support are decreasing and the phosphorus level increases, phosphorus being in greater quantity in the solution.
Online since: October 2023
Authors: Karel Dvořák, Dorothea Sklenářová
According to the Dunham classification, it is Sparstone with obliterative texture, blocky mosaic with relatively homogenous grain size predominantly ~0.3 mm.
Acknowledgements This work was financially supported by BUT student research project number: FAST-J-22-8046 “Study of the kinetics of decomposition reactions of limestones under thermal stress”.
Online since: June 2011
Authors: Khairur Rijal Jamaludin, Sufizar Ahmad, Mohd Halim Irwan Ibrahim, Nor Hafiez Mohamad Nor, Jaafar Sahari, Andanastuti Muchtar, Norhamidi Muhamad
A design of experiment (DOE) method is necessary for the experimental work which involves many inputs to minimise the number of experiments needed to be preformed.
When the heating rate was increased, the porosity of the samples was lower and the grain became finer so the density was increased [11,12].
Online since: February 2004
Authors: C. Yamamoto, I. Nakada, T. Kuboi, Takeo Shinmura
This method is a new process of internal polishing using a vibrating tool with attached rare earth permanent magnet, instead of using magnetic material abrasive grains as in conventional magnetic field-assisted polishing.
Therefore, increasing the frequency also increases the number of vibrations that the tool shaft vibrates against the workpiece.
Online since: January 2014
Authors: Qian Su, Wei Jiang, Jun Kai Yao, Wen Sun, Ling Ling Yang
Fine-grained soil is frozen, the water into ice (9% volume expansion),cause soil expansion, which is called frost heave phenomenon [1].Frost heaving mechanism is: when the temperature drops below 0 ℃,free water frozen into ice crystals first, and the outermost layer of weakly bound water began to freeze, causing ice crystals gradually expand, the combination of water film of ice crystals surrounding soil particles thinning.
(6) Every year, the subgrade frost damage concentrated in the period by the end of December to February, especially in early January frost damage occurs most concentrated account for 58% of the total number of frost damage whole year, below the frost heave height 10mm.
Online since: September 2008
Authors: Chul Woo Kim, M. Kawatani, M. Tsukamoto, N. Fujita
It means there are very limited numbers of those designed to run off of batteries.
Estrin: Fine-grained network time synchronization using reference broadcasts, Proc. of the Fifth Symp. on Operating Systems Design and Implementation (OSDI 2002), Boston, MA, USA (2002).
Online since: April 2009
Authors: Xiao Dong Zhang, Ji Hua Chen, Dan Li Xi
With the growing number of tourists, the biggest landscape lake--The Center Lake, has shown worse and worse water quality.
The other is that the microorganism living on the surface of ceramic can cut some colloidal matter by their biological flocculation function then reduced the Zeta degree and be propitious to agglomeration of colloid grain in water [15]. 1 2 3 4 5 6 7 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100Removal rate/% TDP/(mg/L) Time/d Influent Effluent removal 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 50 60 70 80 90 100 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100Removal rate/% Turbidity/NTU Time/d Influent Effluent removal Fig. 9 the effect of TDP removal Fig. 10 the effect of Turbidity removal Conclusion By twelve months' test, the following results are concluded: Firstly, the purification effect of elastic padding in treating seriously polluted water is quite
Online since: September 2004
Authors: Kazuyuki Hokamoto, Krishnamorthy Raghukandan, P. Tamilchelvan, H.C. Dey, A.K. Bhaduri
They were annealed at 8500 C and 8000C, respectively, for one hour and subsequent furnace cooled to produce a coarse grained structure.
Evaluation of the coefficients of models: The general model is given as Y = b0 + b1 D + b2 M + b3 A + b4 DM + b5 DA +b6 MA+ b7 DMA Where b0 is the average of response (h) and b1,b2 ... b7 are calculated using the following equation b = Σ( Xi x Yi ) / N where i varies from 1 to N in which Xi is the corresponding coded value of the process parameters, Yi is the corresponding response output variable value obtained from experiment and N is the total number of treatment combinations considered (main and interaction effects-in this case it is 8).
Online since: July 2005
Authors: Františka Dorčáková, František Lofaj
RE-oxide and RE-oxynitride glasses (RE = rare-earth (lanthanide) element) with different nitrogen contents are of considerable interest because such oxynitride glasses occur as grain boundary phases in Si3N4 ceramics and they seriously affect their mechanical properties, especially at elevated temperatures.
A number of earlier studies [1-6] indicates that the properties of the oxynitride glasses can be modified by nitrogen content and/or by a substitution of RE-modifiers with different ionic radii.
Online since: December 2011
Authors: Ming Kai Zhou, Xiao Chen, Zhan Ao Liu
What’s more, while a number of studies have been conducted on high strength flowing concrete, there are few instances concerning LHC, especially the LHC prepared by MS.
Man-washed granite MS containing 0.8% fines and successive grading granite crushed stone(CS) with maximum grain size of 40mm were used as aggregates.
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