Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: April 2007
Authors: Y. Wang, R.S. Xin, X.L. Jia, Hai Jun Zhang, Quan Li Jia
Crystalline grain size (diameter) calculated by Scherer's Formula is 25.2 nm, 19.5 nm and 11.9 nm for pure, uni-doped and tri-doped titania films, respectively.
The films appear porous and the grains are finely dispersed.
There is a great difference in doped titanium oxide films with varying numbers of metal ions in the same thickness.
The photocatalysis activity of titanium oxide films reaches its peak when the numbers of metal ions are Ce+Co+La=6.39% and Co = 1.98% for the triply doped and uni-doped system, respectively.
Online since: December 2012
Authors: Yong Lu, Dong Gao, Ming Liang Zhang, Wei Chen
Therefore, a number of researchers focus HTSC on the levitation vehicle.
A number of models are proposed to explain this interaction, but the most efficient and simple model is IDM.
Lee, Grain size effect on magnetic levitation of YBCO superconducting samples Physica C, 282-287(1997), 1455-1456
Feng, et al., Identification of the effect of grain size on levitation force of well-textured YBCO bulk superconductors, Cryogenics, 42(2002), 589-592
Online since: July 2013
Authors: Ryo Matsubara, Takumi Matsui, Katsuya Higa, Shigeru Itoh, Osamu Higa
Because, the rice grains are very hard, the process must be repeated using the momentary high pressure for the fracturing of the rice grains [2].
Table 1 Cable specifications Cables Internal conductor (Wire number/Wire diameter [mm]) Conductor diameter [mm] Conductor resistance [Ω/km] Capacitance [nF/km] KIP14sq 7/1.6 4.8 1.35 No Data RG-17/U 1/4.775 4.775 No Data 97 Fig.3 Cut down of inductive impedance by to change discharge cable Experimental Results Table 2 shows the results, which are the peak current, the time of peak current and the peak pressure generated by the underwater discharge using two different cable types.
Acknowledgment This study was supported by the Research and Development Projects for Application in Promoting New Policy of Agriculture Forestry and Fisheries by Ministry of Agriculture, Foresty and Fisheries (No.24022) and JSPS KAKENHI Grant Number 24917024.
Online since: December 2012
Authors: Yao Dong Wu, Li Lan Zhang
Table 1 Engineering geological information list Strata Numbers Geotechnical name seam thickness depth Description of the characteristics Pile resistance value (kPa) Pull out the characteristic value of resistance (kPa) (1) plain fill 1.0 1.0 black brown (2) silty clay 4.5 5.5 Tan and plastic state, compressibility in 26 (3) clay 3.5 9 Tan and plastic partial hard-hard plastic state, compressibility in 35 (4) clay 2.3 11.3 Tan and hard plastic-hard state, in low-compressibility 42 500 (5) grit 2.5 13.8 Tyrosinance, close-grained state, saturated 70 600 2.
Pile soil characteristics: such as soil categories, soft hard or close-grained degree and the relationship between soil layer upon layer a.
Test options According to conventional in the oblique pull force, it may be the force into the vertical force and the horizontal thrust out two reality, then according to the size of the force of the pile resistance were pulled vertical force and the horizontal thrust static loading test to determine the resistance of the bearing capacity of pile out and horizontal bearing capacity, and finally to synthesis the two forces, to determine the pile bearing capacity of oblique tensile, by using the method of test, a test is double the number, and the time is long, affects period.
Online since: July 2011
Authors: Guang Ping Cheng, Yi Zhu He
It shows the coating mainly consists of three kinds of microstructure, with the matrix including two dendritic phases shown as the grain A and grain B in Fig.2, and the lamellar eutectic distributing around the dendrites shown as the area C in Fig.2. 25μm B C A a b Fig.2 The OM micrograph (a) and SEM image (b) of composite coatings Tab.1 EDS analysis results(atom content) of the matrix dendrite phase A, phase B and eutectics C Element(at%) dendritic phase A dendritic phase B eutectic C Ni Al Fe Cr Si 55.2 10.2 23.3 6.6 4.7 57.8 22.5 13.3 2.8 3.6 23.1 3.2 27.5 44.2 2.0 Tab.1 shows the spectrum analysis results of the two dendritic phases and the eutectics microstructure.
Although the material powders do not contain Fe, considerable number of Fe are solid solution both in phase A and B which come from the steel base, for the Fe being large solid solubility in nickel and nickel-aluminum compounds.
Eutectic C contain mainly Cr, so the eutectics should contain a large number of chromium boride or carbide.
Online since: June 2010
Authors: Xiao Dong Wu, Kiyonori Suzuki, Chan Yeol Seo
It is know that grain refinement occurs when milled at cryogenic temperatures.
Substantial peak broadening is observed for both MgH2/BCN and MgH2/Nb2O5 powders after ball milling for 100h, indicating that the average grain size is greatly reduced by ball milling.
It can be found that BCN and Nb2O5 particles, which appear brighter in the image due to the larger atomic numbers of Nb and Nd, are randomly distributed in the MgH2 matrix.
Given the fact that the hydrogen storage capacity of each particle is directly related to the volume, the contributions from the large particles to the entire desorption rate could be significant relative to those from small particles even if the number density of the large particles is small.
Online since: December 2010
Authors: M.B. Lyakhova, A.G. Pastushenkov, V.I. Sinekop, P.A. Zezyulina, Yury G. Pastushenkov, E.M. Semenova
The cells of one grain of the alloy are coherently connected in a way that the easy-axis magentization of the grain and the crystallographic c-axis coincide, despite its complex heterogenious nanostructure.
A large number of researches are devoted to the particular characteristics of the magnetization reversal processes [1-6].
However, a significant number of problems related to the role of micro- and nano-structure of this alloy in the formation of its magnetic characteristics and in the magnetization reversal processes remain open and have been widely discussed in scientific publications.
Online since: May 2012
Authors: Gabriela Sima, Oana Gîngu, Nicoleta Lupu, Bebe Adrian Olei
Grain size distribution for the initial Hap powder particles The fabrication route for the Hap/Ti biocomposites is the one presented in the figure below (figure 4).
The parameters of the SPS process Sample number Sintering route Sintering parameters Temperature Maintaining time 1 SPS 1000 20 2 1000 10 3 1100 20 4 1100 10 a).
Differences of the sample processed at 1000°/10min: a). non-etched; b). etched 15s; c). etched 30s Figure number 8 presents the images of the most representative samples etched after being sintered by SPS process.
The etching process distinguish the Hap areas, nanostructured, that surround the Ti microstructured grains.
Online since: July 2007
Authors: Olaf Engler
During cold rolling the grain structure is flattened and the material strain-hardens with the formation of a typical dislocation and/or subgrain substructure.
In such approaches the individual crystallites are assumed to deform by slip on a number of crystallographic slip systems so as to accommodate the prescribed macroscopic strain rate Dij.
In this study, we have used the grain interaction (GIA) model [21] for simulating rolling textures.
The amount of relaxation of the shears, the slip rates and, ultimately, the grain reorientation is derived from a minimization of the total plastic work due to slip of the eight grains plus the energy introduced by the GNDs.
Conf. on Recrystallization and Grain Growth, eds.
Online since: May 2014
Authors: Leszek Adam Dobrzański, Wojciech Borek, Janusz Mazurkiewicz
Interest in high manganese steels is a new issue, addressed for a limited number of scientific entities in the world [1-3,10-14].
Shaping the strength and plasticity properties greatly depends on the size and shapes of grains of the tested steel before cold plastic deformation.
Along with grains size increase, steel elongation occurs even up to 80%, and strength properties decrease.
Decreasing of grains size causes lowering of the plasticity properties with simultaneous increase of the plasticity and yield point of the tested steels.
Acknowledgements Project was founded by the National Science Centre based on the decision number DEC-2012/05/B/ST8/00149.
Showing 15671 to 15680 of 28680 items