Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: December 2014
Authors: Jefferson Fabrício Cardoso Lins, Claudinei dos Santos, Alexandre Fernandes Habibe, Luis Alberto dos Santos, Durval Rodrigues, José C. Minatti
The increase in free energy of the crystalline phase by introducing defects such as random chemical disorder or the increase of grain boundary area leading to the formation of a nanocrystalline structure, are considered responsible for amorphization during MM.
The high-energy milling is a complex process and involves the optimization of a number of variables to achieve phase and / or the desired microstructure of the product.
The high-energy milling is a complex process and involves the optimization of a number of variables to achieve phase and / or the desired microstructure of the product.
Online since: July 2012
Authors: Minoru Oshima, Kenji Yoshino
The grain size at the surface appeared to remain constant with increasing F concentration.Fig. 2 SEM images showing surface morphology of (a) SnO2 and (b) FTO films
Fig. 3 XPS spectra of Sn 3d level measured for FTO films
Fig. 4 Composition of FTO films with different F concentrations
The elemental composition of the FTO samples was determined by XPS (Figures 3 and 4).
This was due to the fluorine atoms acting as donor-type impurities and increasing the number of free electrons.
This was due to the fluorine atoms acting as donor-type impurities and increasing the number of free electrons.
Online since: August 2018
Authors: Cong Zhang, Wen Jie Yuan, Jun Li, Ling Qu
The results of compositions determined for a number of SiCN fibers grown at 1650°C are depicted in Fig. 4.
In the cubic SiCN, the interplanar spacing was 0.655nm, and the grain was growing along [100].
In the cubic SiCN, the interplanar spacing was 0.655nm, and the grain was growing along [100].
Online since: April 2014
Authors: Zhi Yuan Chen, Hui Lin Yuan, Yue Xing Liu, You Chen Zhang, Yong Liu, Ke Jian Wang
At time 0, all values of number were zero without HCHO passed.
However, the grain diameter of 5# is different apparently.
However, the grain diameter of 5# is different apparently.
Online since: January 2019
Authors: Yao Rong Feng, Cai Hong Lu, Li Hong Han, Chun Feng, Long Jiang, Jie Feng, Li Juan Zhu
Introduction
With the oilfield exploratioin development, the number of water injection wells is increasing, and the internal corrosion problem of water injection tubing is becoming more and more serious.
Fig. 3(c) shows the non-aluminized N80 sample, the surface of which is a loose corrosion product film grain, and the local product film is peeled off to expose the substrate[6], showing obvious local corrosion characteristics as shown in Fig. 3(d).
Fig. 3(c) shows the non-aluminized N80 sample, the surface of which is a loose corrosion product film grain, and the local product film is peeled off to expose the substrate[6], showing obvious local corrosion characteristics as shown in Fig. 3(d).
Online since: July 2014
Authors: Jun Wang, Zheng Xia Zhang, Si Qiu Xu, Er Ning Zhou, Xiao Lin Huang
In this paper, the complexity analysis method based on Jensen-Shannon Divergence was used to calculate the complexity of the idle states, the close eyes states and the count numbers states electroencephalogram.
The principle For time series x whose length is N, {x(i):1iN}, given time scale factorτ, the original time series x coarse graining [18] according to the following ways: (1jN/τ) (1) We denoted p1、p2 as two probability distribution of discrete random variables X while (1) stands for the KULLBACK direct difference I
The principle For time series x whose length is N, {x(i):1iN}, given time scale factorτ, the original time series x coarse graining [18] according to the following ways: (1jN/τ) (1) We denoted p1、p2 as two probability distribution of discrete random variables X while (1) stands for the KULLBACK direct difference I
Online since: January 2015
Authors: Grzegorz Dercz, Joanna Michalska, Wojciech Simka, Tadeusz Gorewoda, Artur Maciej, Maciej Sowa
It should be added that previously, there has been observed an increase in a number of scientific works applying to other zinc-based alloy coatings, e.g.
The nodular-grain morphology of the surface is the mapping of non-treated Zn-Ni coating structure.
The nodular-grain morphology of the surface is the mapping of non-treated Zn-Ni coating structure.
Online since: July 2016
Authors: Andrey N. Dmitriev, Yu.A. Chesnokov, Galina Yu. Vitkina, R.V. Petukhov, S.V. Kornilkov, A.E. Pelevin
Division into districts of titanium magnetite ores by the size of a dissemination of grains of a titanomagnetite: horizon +160m, Northern pit
In Figures 3 and 4 the microstructures of ore pieces of the Western and Main open-cast mines of the Gusevogorsky deposit are presented [6].
The shooting mode was step-by-step with interval ΔB = 0.05 T, the exposure value for each field was 2 seconds, the number of measurements (points) on each value of the field was 5, scan the field was ± 2 T, the sample temperature was 300K.
The shooting mode was step-by-step with interval ΔB = 0.05 T, the exposure value for each field was 2 seconds, the number of measurements (points) on each value of the field was 5, scan the field was ± 2 T, the sample temperature was 300K.
Online since: June 2015
Authors: Fabiane Leocádia da Silva, Fernando Gabriel da Silva Araújo, Fernando Leopoldo von Krüger, Camila Gonçalves Castro
From the particle size analysis it was found that grain sizes of 12.5 - 20mm are suitable for use in concrete, which means approximately 50-60% by volume of total waste is consumed.
The author held a number of tests were then conducted on the aggregate part of mine wastes and the physico-mechanical properties were obtained.
The author held a number of tests were then conducted on the aggregate part of mine wastes and the physico-mechanical properties were obtained.
Online since: January 2016
Authors: Wichian Siriprom, Kanyakorn Teanchai, Chanunthorn Chananonnawathorn, Mati Horprathum, Worasitti Sriboon, Wissawat Sakulsaknimitr, Viyapol Patthanasettakul
Annealing up to 300°C, the films become smooth with annealing indicate reduction in the number of defects with annealing [5].
It was found that the average optical transmission in the visible light region improves with annealing treatment, exhibiting 68% for as-deposited ITO thin film and 71% after annealingat 200 and 300 °C.The improvement of optical properties caused by increasing annealing and reduced of defects near the grain boundaries, thus resulting in the improvement of structural homogeneity and the decrease of light reflection [5-6].
It was found that the average optical transmission in the visible light region improves with annealing treatment, exhibiting 68% for as-deposited ITO thin film and 71% after annealingat 200 and 300 °C.The improvement of optical properties caused by increasing annealing and reduced of defects near the grain boundaries, thus resulting in the improvement of structural homogeneity and the decrease of light reflection [5-6].