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Online since: July 2015
Authors: Rong Fuh Louh, Yi Jui Huang, Ya Chih Tsai, Danny Ho, Doris Liao
Introduction A number of processing techniques were proposed to fabricate templates for photonic crystals (PhCs) such as self-assembly of colloidal particles for multi-photon polymerization[1], holographic lithography[2], and direct laser writing[3] and so forth.
One should be aware that calcination of these specimens leads to excessive grain growth and the periodic pore structure is no longer available.
The results showed that the number of filling was limited to five filling cycles.
Online since: March 2016
Authors: Pavel N. Belkin, Sergei A. Kusmanov, V.S. Belkin, V.I. Parfenyuk
The corrosion current density was determined from the Allen–Hickling equation [15]: . (1) Here, j is the current density in the system, z is the number of electrons participating in the electrochemical corrosion reaction on the surface, F is the Faraday constant, R is the universal gas constant, T is the medium temperature, jcorr is the corrosion current density, α is the coefficient, and Ecorr is the open-circuit potential.
The yield of backscattered protons from the nitrided samples (Æ 8´10 mm) versus the channel number (proton energy).
Concentration distributions of nitrogen and oxygen in the titanium sample (Æ 8´10 mm) treated at 700 °С The anode PES of the rectangular samples (50´20´3 mm) of Ti-3.5Al-1.2Mn at the 220 V during 5 min leads to recrystallization of its alloy with the growth of grains by a factor of 20 (Fig. 3).
Online since: August 2017
Authors: Peter Šugár, Jana Šugárová, Miroslav Sahul, Martin Frnčík
These chosen parameters and its levels are summarized in Tab. 1, but a number of experiments required by a 3k full factorial design having four factors is 81.
It is an easily producible and relatively cheap type of ceramic with the following properties: apparent density of 3.7 – 3.95 g.cm-3, mean grain size of 10 μm, hardness (Knopp, 100 g) of 23000 MPa, specific heat of 850 J.kg-1.K-1 and thermal conductivity of 30 W.m-1.K-1.
Machined surface is formed by the material clusters with the dimensions larger than 200 μm, numbers of clusters are observed on the machined surface.
Online since: October 2011
Authors: Yu Zhou, Zheng Rong Sha
The concentration of sediment grain is lower and it is easier for the sediment to suspend again.
The number solution for the coupled differential system is achieved using finite volume method and Riemann approximate solution, simulating the water flow process and the corresponding process of pollutant transportation and diffusion.
The number solution is reached through the method of finite volume.
Online since: July 2023
Authors: Guido Silva, Rafael Aguilar, Suyeon Kim, Javier Nakamatsu, Robert Ñañez, Gaby Ruiz, Miguel A. Pando, Diana Zavaleta
The number next to the letters represents the liquid content by weight of the total composite.
The percentage number in parenthesis indicates the concentration of the stabilizers.
[12] ASTM D7928, "Standard Test Method For Particle-Size Distribution (Gradation) Of Fine-Grained Soils Using The Sedimentation (Hydrometer) Analysis," ASTM International, West Conshohocken, PA, 2021
Online since: August 2016
Authors: Ya Feng Yang, J.F. Sun, Ying Ying Sun, Shu Dong Luo, Ma Qian
.% in Ti-xTiH2 Shape and number of samples* Mass of samples (mTi + mTiH2) Response to MW 14 0 1× cuboidal bar, 1×Φ20 20g + 0g 2g + 0g x 15 10 1× cuboidal bar, 1×Φ20 18g + 2g 1.8g + 0.2g x 16 10 1× cuboidal bar, 1×Φ20 18g + 2g 1.8g + 0.2g x 17 100 1× half tensile bar, 1×Φ20 0g +1.8g 0g + 2g √ (562 oC) 18 100 1× half tensile bar, 1×Φ20 0g + 1.8g 0g + 2g √ (1300 oC) 19 100 1× tensile bar, 1×Φ20 0g + 3g 0g + 2g √ (1310 oC) 20 0, 20, 30, 50, 70, 100 12×Φ10, 1×Φ20 (Fig. 1(b)) 12×3g** 0g + 2g x 21 10 A specially designed sample, see Fig. 5 18g + 2g x Note: *The 20mm diameter disk sample (2 grams each) included in each experiment was used for temperature measurement.
(a) and (c) are unetched showing the pores while (b) and (d) are etched showing the grain structures.
Indeed, a number of samples (No. 3, 10, 11, 17-19 and 22) in this study showed excellent coupling with MW radiation.
Online since: August 2004
Authors: David J. Young, M.L. Burg, P. R. Munroe
Introduction Internal oxidation rates can be accelerated by boundary diffusion processes, such as along grain boundaries [1] or at pre-existing interdendritic carbides [2, 3].
Precipitates rich in aluminium have low average atomic numbers and therefore appear dark.
Both spinel and Cr2O3 (if the latter is present) have higher atomic numbers and therefore appear brighter.
Online since: June 2019
Authors: Eva Burgetová
The monasteries met a number of special functions that the society of that time could not otherwise provide.
In the most monasteries, the central (backbone) channel runs through the whole building site (Fig. 1), to which a number of secondary drainage channels have been connected and which have been constantly flushed.
It is characterized as a "water-saturated yellowish alluvium, with pebbles and grains, whose relatively low bearing capacity is increased by constant water soaking" [5].
Online since: September 2014
Authors: Friederike Schwarz, Rudolf Kawalla, Matthias Schmidtchen, Haitham Saleh, Lutz Krüger, Stephan Reichelt
A considerable number of investigations have fabricated Al/Mg LMCs.
At first, grain boundary migration causes the formation of more joint location in the interface causing the observed bonding strength enhancement by heat treatments that were obtained at low annealing temperatures.
The intermediate phase appears when the amount of diffused aluminum atoms in the magnesium layer, or vice versa, becomes larger than the critical number [13-16].
Online since: May 2025
Authors: Solomon Idowu Adedokun, John Oluwagbenga Awoleye, Peter Olugbenga Abayomi, Samuel Ayanwuyi Ayanlere
The number of blows causing the closure of the groove was determined, and a very small quantity of the soil paste was used for the determination of water content.
The water contents determined were then plotted against the number of blows on a semi-logarithmic graph.
Impact of steel slag on: A) Gradation curve B) %age passing 75μm sieve Mashifana et al. [33] while quoting a study conducted by Nelson, noted that there is a strong dependence of strength on grain size, which means that, the smaller the size of particles within the soil, the greater the strength becomes as a result of higher inter-particle interaction.
Mashifana et al. [33] noted that there is strong relativity of strength on particle size, and the smaller the grain size the greater the strength becomes owing to higher inter-particle interactions and increased void-filling capacity of the fine fractions.
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