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Online since: September 2015
Authors: Yoshinobu Shimamura, Takashi Matsumura, Yuki Nakamura, Akira Ueno, Noriyasu Oguma, Kenji Okada, Akiyoshi Sakaida, Tatsuo Sakai, Koushu Hanaki, Kazutaka Mukoyama
This coding system is a combination of two basic codes; a contributor’s code of three digits and a test series code of three digits (series number).
The former is assigned to each contributor, and the series number is assigned to each fundamental set of data by each contributor.
Datasheet of Basic Data (IV): Grain Size/Grain Size No., Cleanliness, Chemical Composition etc. should be entered in this datasheet.
In the following example, code of the contributor is “102”, and the test number is “0011”.
On the other hand, in the case of PN data, a number of specimens are tested at each stress level.
The former is assigned to each contributor, and the series number is assigned to each fundamental set of data by each contributor.
Datasheet of Basic Data (IV): Grain Size/Grain Size No., Cleanliness, Chemical Composition etc. should be entered in this datasheet.
In the following example, code of the contributor is “102”, and the test number is “0011”.
On the other hand, in the case of PN data, a number of specimens are tested at each stress level.
Online since: November 2013
Authors: Ting Ting Li, You Hai Sun, Ming Qin, Yue Shi
By using geological and geophysical data and according to the basic characteristics of sequence boundary, Putaohua Reservoir in Daan Oilfield is divided into a rise hemicycle in long-term cycles, a full middle-term cycle, nine short-term cycles and a number of ultra-short-term cycles.The high-resolution sequence stratigraphic framework of Putaohua reservoir under monosandbody rank is established, and a set of techniques and methods to high-resolution sequence stratigraphy correlation in shallow delta is summed up.
Bellow the convert surface, generally, the following up interface is "lighter" phase sequence (particle coarsening-upward) and above the interface is "darken" phase sequence (grain size fining upward).
Bellow the convert surface, generally, the following up interface is "lighter" phase sequence (particle coarsening-upward) and above the interface is "darken" phase sequence (grain size fining upward).
Online since: May 2009
Authors: H.M. Lu
When the
interface is composed of the same solids, the interface is also called as grain boundary and the
corresponding interface energy is named as grain boundary energy.
It was thought that the free energy of the system depends not only on γsl but also on the energy of the grain boundary (which varies with the relative orientation of the grains), a scattering of γsl0 could thus be expected due to the random orientation of the neighboring grain [16].
However, for high angle grain boundary, γss0 is almost a constant.
Here, the considered grain boundary energy is the high angle one.
For the grain boundaries, even if when D→D0, γss(D)/γss0 ≈ 75% while γsl(D)/γsl0 = 0.
It was thought that the free energy of the system depends not only on γsl but also on the energy of the grain boundary (which varies with the relative orientation of the grains), a scattering of γsl0 could thus be expected due to the random orientation of the neighboring grain [16].
However, for high angle grain boundary, γss0 is almost a constant.
Here, the considered grain boundary energy is the high angle one.
For the grain boundaries, even if when D→D0, γss(D)/γss0 ≈ 75% while γsl(D)/γsl0 = 0.
Online since: June 2025
Authors: Olumide Ezekiel Ogundoyin, Abiodun Olayinka Ogunsanya, Deborah O. Daramola, Esther B. Iorkohol, Sunday Thomas Ajayi
However, the existence of the Mg-Zn/Ca phase is not constant at the grain boundaries.
However, oxides discovered inside the grains may seem to prevent grain formation.
In addition, there was an increase in the overall number of pores produced.
The reinforcement of PLA polymer with co-doped HAp filler leads to an increase in the number of pores formed.
Meanwhile, the doped HAp has more consistent crystal formation and grain boundaries.
However, oxides discovered inside the grains may seem to prevent grain formation.
In addition, there was an increase in the overall number of pores produced.
The reinforcement of PLA polymer with co-doped HAp filler leads to an increase in the number of pores formed.
Meanwhile, the doped HAp has more consistent crystal formation and grain boundaries.
Online since: July 2012
Authors: Yong Ren
In our web content management system, data can be defined as documents, movies, pictures, phone numbers, scientific data, and so forth.
The procedures are designed to allow for a large number of people to contribute to and share stored data, control access to data based on user roles, aid in easy storage and retrieval of data, reduce repetitive duplicate input, improve the ease of report writing, and improve communication between users.
In a CMS, data can be defined as nearly anything: documents, movies, pictures, phone numbers, scientific data, and so forth.
ACL controls security access in the level of fine grain.
The procedures are designed to allow for a large number of people to contribute to and share stored data, control access to data based on user roles, aid in easy storage and retrieval of data, reduce repetitive duplicate input, improve the ease of report writing, and improve communication between users.
In a CMS, data can be defined as nearly anything: documents, movies, pictures, phone numbers, scientific data, and so forth.
ACL controls security access in the level of fine grain.
Online since: June 2020
Authors: Omar A. Ibrahim, Manal Midhat Abdullah
The grain size is ranged between (1.814 and 3.456 nm).
Table (1): The parameters obtained from x-ray diffraction pattern are: the FWHM, the spacing between atoms, the grain size, and the diffraction planes for CdSe/CdS nanoparticles Which indicates that the crystal is cubic phase structure. 2Ɵ(degree) FWHM (degree) dhkl C.S(nm) hkl 25.75 6.51 3.456976 1.251793 111 43.05 3.41 2.099441 2.504364 220 50.25 2.25 1.814202 3.899778 311 EDX spectra of CdSe/CdS Qds Fig. (5) presents energy dispersive spectra of CdSe/CdS nanoparticles which declares the chemical purity and the samples stoichiometry.
Scientific Reports volume 7, Article number: 14104 (2017) [22] R Lopez-Delgado et.al.
Table (1): The parameters obtained from x-ray diffraction pattern are: the FWHM, the spacing between atoms, the grain size, and the diffraction planes for CdSe/CdS nanoparticles Which indicates that the crystal is cubic phase structure. 2Ɵ(degree) FWHM (degree) dhkl C.S(nm) hkl 25.75 6.51 3.456976 1.251793 111 43.05 3.41 2.099441 2.504364 220 50.25 2.25 1.814202 3.899778 311 EDX spectra of CdSe/CdS Qds Fig. (5) presents energy dispersive spectra of CdSe/CdS nanoparticles which declares the chemical purity and the samples stoichiometry.
Scientific Reports volume 7, Article number: 14104 (2017) [22] R Lopez-Delgado et.al.
Online since: May 2014
Authors: Peter C. Bollada, Peter K. Jimack, Andrew M. Mullis
Using such techniques it is shown that such models are tractable for modest values of the Lewis number (ratio of thermal to solutal diffusivities).
Remnants of these dendritic microstructures often survive subsequent processing operations, such as rolling and forging, and the length scales established by the dendrite can influence not only the final grain size but also micro- and hence macro-segregation patterns.
The use of PARAMESH imposes a number of constraints upon our choice of finite difference stencil.
Consequently, validation against directly comparable data set is only possible over a relatively limited range of Lewis numbers, typically Le » 40.
In 2-dimensions solutions for Lewis number of O(10,000), which is physically realistic for most liquid metals, can be routinely undertaken using serial execution [[] J.
Remnants of these dendritic microstructures often survive subsequent processing operations, such as rolling and forging, and the length scales established by the dendrite can influence not only the final grain size but also micro- and hence macro-segregation patterns.
The use of PARAMESH imposes a number of constraints upon our choice of finite difference stencil.
Consequently, validation against directly comparable data set is only possible over a relatively limited range of Lewis numbers, typically Le » 40.
In 2-dimensions solutions for Lewis number of O(10,000), which is physically realistic for most liquid metals, can be routinely undertaken using serial execution [[] J.
Online since: October 2013
Authors: Xin Xiong Liu, Hai Ping Zhao, Lin Gan
With a large number of modern new materials developed by research, the prospect of the industrial product design is broader and the value of industrial products, further enrich and improve.
The beauty of materials mainly through the material texture itself, namely grain, structure, luster and texture features [2].
The beauty of materials mainly through the material texture itself, namely grain, structure, luster and texture features [2].
Online since: October 2006
Authors: Jens Schmidt, Matthias Scheiffele, Alexander Mach, Franz von Issendorff
Through the variation of the amplitude
and number of lamellae per inch, the open porosity and orientation of the pore channels could be
tailored in a wide range.
Fig. 2: Novel method for producing 3D SiSiC: step 1: stacking, step 2: cutting, step 3: turning, step 4: joining + optional stabilisation with carbon sheets, step 5: schematic setup zone A + C 2 4 1 3 5 Si-infiltration zone A zone C zone C The microstructure of 3D SiSiC is characterized by sheet and lamellae thicknesses of about 1 mm and a coarse grained microstructure.
These structures as well as the structure with the mixed angle (V6-70°/20°) could not be used for porous burners, because there was non-sufficient flame propagation in the porous structure. 0 20000 40000 60000 80000 100000 120000 V1-30 V2-50 V3-60 V4-70 V5-80 V6-70/20 No. of thermoacustics counts 3rd cooling 3rd firing 2nd cooling 2nd firing 1st cooling 1st firing Fig. 5: Thermoacustics counts during the thermal cycling (3 cycles) of selected 3D SiSiC ceramic specimens It can be seen in fig. 5 that the total number of thermoacoustics counts varied whereas most of the counts (70-91 %) could be detected during the first firing of the components and then sharply decrease in the next cycles.
During the cooling down from the maximum temperature only a small number of counts could be detected.
A correlation of the number of thermoacoustics counts and determined properties e.g. angle variation could not be found.
Fig. 2: Novel method for producing 3D SiSiC: step 1: stacking, step 2: cutting, step 3: turning, step 4: joining + optional stabilisation with carbon sheets, step 5: schematic setup zone A + C 2 4 1 3 5 Si-infiltration zone A zone C zone C The microstructure of 3D SiSiC is characterized by sheet and lamellae thicknesses of about 1 mm and a coarse grained microstructure.
These structures as well as the structure with the mixed angle (V6-70°/20°) could not be used for porous burners, because there was non-sufficient flame propagation in the porous structure. 0 20000 40000 60000 80000 100000 120000 V1-30 V2-50 V3-60 V4-70 V5-80 V6-70/20 No. of thermoacustics counts 3rd cooling 3rd firing 2nd cooling 2nd firing 1st cooling 1st firing Fig. 5: Thermoacustics counts during the thermal cycling (3 cycles) of selected 3D SiSiC ceramic specimens It can be seen in fig. 5 that the total number of thermoacoustics counts varied whereas most of the counts (70-91 %) could be detected during the first firing of the components and then sharply decrease in the next cycles.
During the cooling down from the maximum temperature only a small number of counts could be detected.
A correlation of the number of thermoacoustics counts and determined properties e.g. angle variation could not be found.
Online since: August 2007
Authors: Dietmar Eifler, F. Walther
In Fig. 1 the ferritic-pearlitic
microstructure of SAE 1050 (a) with an average ferrite fraction of 11.2 area-%, the microstructure
of SAE 4140 (b) with fine dispersed Fe3C carbides as well as the fine-grained microstructure of
MRI 230D (c) with a magnesium solid solution (α phase) and different precipitations are shown as
SEM micrographs.
In Fig. 2a besides the stress amplitude σa, starting at σa,start = 100 MPa with a stepwise increase of ∆σa = 20 MPa each ∆N = 9·103 cycles, the plastic strain amplitude εa,p, the change of the temperature ∆T and the change of the electrical resistance ∆R are plotted versus the number of cycles.
With Eq. 1 it is possible to describe the relation between σa and M(N) = εa,p, ∆T or ∆R values for different load levels of a LIT as well as at a defined number of cycles, e.g. 10 4, in SSTs.
With the exponent d(∆R) = -0.08 (Eq. 3) and the number of cycles to failure Nf = 3.5⋅104 for σa = 420 MPa, the coefficient c(∆R) was determined according to Eq. 2.
In Fig. 2a besides the stress amplitude σa, starting at σa,start = 100 MPa with a stepwise increase of ∆σa = 20 MPa each ∆N = 9·103 cycles, the plastic strain amplitude εa,p, the change of the temperature ∆T and the change of the electrical resistance ∆R are plotted versus the number of cycles.
With Eq. 1 it is possible to describe the relation between σa and M(N) = εa,p, ∆T or ∆R values for different load levels of a LIT as well as at a defined number of cycles, e.g. 10 4, in SSTs.
With the exponent d(∆R) = -0.08 (Eq. 3) and the number of cycles to failure Nf = 3.5⋅104 for σa = 420 MPa, the coefficient c(∆R) was determined according to Eq. 2.