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Online since: June 2013
Authors: Jun He Lian, Napat Vajragupta, Sebastian Münstermann
In the size of 100 μm×100 μm RVE, total number of 90,000 plane stress continuum elements (CPS4) is generated.
Furthermore, the influence of the crystallographic orientation of ferrite grains on the onset and location of damage is also under on-going study.
Online since: October 2017
Authors: Tomáš Jarolím, Jaroslav Válek, Lucia Osuská, Martin Labaj
Fineness (grain size) of additives is the most limiting factor on current level of concrete technology.
It is important to note that while the physical effect on the hydration kinetics (increasing the number of nucleation sites) is similar with both used nanoparticles, calcium carbonate alone is not a pozzolan and not participate in the reaction with the portlandite.
Online since: November 2016
Authors: Kurt Steinhoff, Michael Rethmeier, Kai Hilgenberg
The wear resistance of such created structures is limited to the intrinsic capability of the steel to improve its strength, e.g. by strain hardening or grain refinement, and does often not reach the required level.
Fig. 6: Initial roll topology and after different cycle numbers The high wear resistance of the laser implanted spots is directly related to the high hardness of the structures (1500 HV1 in this case).
Online since: November 2016
Authors: Yong An Zhang, Kai Wen, Hong Wei Liu, Bai Qing Xiong, Shu Hui Huang, Hong Wei Yan, Xi Wu Li, Zhi Hui Li
It can be observed that a number of coarse second phase particles distribute along the extruding direction.
There are no small particles precipitate observed inside the grains, it might be attributed to the samples were quenched into the water quickly after solution treatments.
Online since: September 2017
Authors: Nima Razavi, M. Peron, J. Torgersen, F. Berto
The basic material properties of the tested graphite are as follows: the mean grain size is of 300 mm, the porosity of 15%, the bulk density of 1830 kg/m3, the mean tensile strength of 30 MPa, the Young’s modulus of 8.00 GPa and the shear modulus of 3.30 GPa.
At least three samples were prepared for each of the 15 specimen geometries described above, with a total number of 45 specimens.
Online since: February 2014
Authors: Tatsuo Fujimoto, Masashi Nakabayashi, Hiroshi Tsuge, Kiyoshi Kojima, Kozo Abe, Kohta Shimomura
Thermal stresses have been identified to be responsible for crystal defects, and therefore there have been a number of reports on stress distributions in SiC crystals.
In general, SiC crystals are grown in a strong lateral thermal distribution environment from the crystal peripheral toward center, and the thermal distributions are crucial in order to maintain monopolytype growth as well as to suppress disturbance of the single crystal growth, i.e. polycrystalline grain formations [5, 6].
Online since: February 2011
Authors: Xuan Ya Li, Lin Lin Ci, Gen Yan Ge, Da Wei Li
Large numbers of cheap and smart sensors, networked through wireless links, provide exciting applications in multifarious areas including object tracking, habitat monitoring, mineral reconnaissance, intruder detection.
Estrin, “Fine-Grained Time Synchronization using Reference Broadcasts," Proceedings of the Fifth Symposium on Operating Systems Design and Implementation (OSDI 2002), Boston, MA, December 2002.
Online since: June 2012
Authors: Yan Wen Feng
This is mainly because the number of hydroxy on silicon oxide network surface is bigger than on titanium oxide network surface, but hydrophilic property of RNH3 is weak to hydroxy.
Grain size and wettability of TiO2/SiO2 photocatalytic composite thin films, J.Rare Metals. 20(2001): 81-86 .
Online since: January 2012
Authors: Zhi Zhang Song, Xiao Hua Liu, Yan Fen Liu, Jing Hui Liu, Jian Jun Li
In recent years, people of such materials in the spin-wave Spectrum [1], dispersion relations [2], spin resonance wave [3], since Spin wave nature of the [4] and a variety of spin-wave mode [5], As well as the band structure [6,7] and other issues, reasonable on the experimental side and made a large number of studies [8,9,10].
[3] Han Z Q , A model of microwave loss due to spin wave resonance in grain surface layers, Acta Phys.sin.
Online since: June 2011
Authors: Qin Bai, H. Man, Y.J. Tang, H. Xu, S. Xia
Introduction Bulk amorphous Nd60Fe30Al10 alloy, first reported in 1996[1,2], has attracted a number of studies due to the high glass-forming ability and hard magnetic behavior at room temperature.
The improvement of magnetic properties after magnetic crystallization is considered to be the result of both magnetic-field-induced crystallite alignment and enhanced exchange coupling due to a reduction of grain size.
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