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Online since: October 2010
Authors: Guerold Sergueevitch Bobrovinitchii, Marcello Filgueira, Sérgio Neves Monteiro, Rômulo Crespo Tardim, Ana Lúcia Diegues Skury
The possibility of positive results for this innovative attempt is based on a number of advantages: elimination of diamond crystals pulverization on the surface of hard substrate, increased adhesion between the layers, better infiltration of cobalt and light indentation of diamond crystals in the substrate as well as the likely reduction in cost and time to obtain the cutters.
The wear index is expressed by numbers ranging from near zero to ten, where low scores refer to a relative low wear suffered by the sample, and 10 is the index for the most damaged sample.
In the case of sample 2, it can be observed that the diamond grains are not fully adhered to the substrate.
The wear index is expressed by numbers ranging from near zero to ten, where low scores refer to a relative low wear suffered by the sample, and 10 is the index for the most damaged sample.
In the case of sample 2, it can be observed that the diamond grains are not fully adhered to the substrate.
Online since: April 2014
Authors: Dorota Szwagierczak, Katarina Cvejin, Libu Manjakkal, Jan Kulawik, Krzysztof Zaraska
The obtained perovskite powders with micrometer grain size were mixed with ethyl cellulose and terpineol in an agate mortar, in order to prepare pastes for screen printing.
Using the Nernst relationship: , (1) where R is the universal gas constant, T is the absolute temperature, n denotes the net number of negative charges involved in the electrode reaction, and F is the Faraday’s constant, if both partial pressures, and , are known, one can calculate the slope that represents the dependence of the generated EMF on the temperature.
Acknowledgement This work was financially supported by European Commission in the framework of the FP7 project SENSEIVER, grant number 289481.
Using the Nernst relationship: , (1) where R is the universal gas constant, T is the absolute temperature, n denotes the net number of negative charges involved in the electrode reaction, and F is the Faraday’s constant, if both partial pressures, and , are known, one can calculate the slope that represents the dependence of the generated EMF on the temperature.
Acknowledgement This work was financially supported by European Commission in the framework of the FP7 project SENSEIVER, grant number 289481.
Online since: April 2014
Authors: Jing Yang, Jian Pei Zhang, Bing Li, Feng Mei Wei
The number of microprocessor modules can be changed according to practical conditions, and various communication modes can be utilized to transmit information.
The number of modules can be changed according to actual needs. 4) Diverse communication modes: module communication can be carried out by CAN bus network, serial communication of reserved modules in motherboard or even the communication through parallel interface.
[9] Zhao, Lei ; Chen, Geng ; Yu, Wenhua “A novel enhancing technique for parallel FDTD method using processor affinity and NUMA policy, ” Applied Computational Electromagnetics Society Journal ,Vol.27,No8 (2012), P638-645 [10] Park, Junyoung1, Hong, Injoon, “A multi-granularity parallelism object recognition processor with content-aware fine-grained task scheduling,” IEEE Symposium on Low-Power and High-Speed Chips - Proceedings for 2013 COOL Chips XVI (2013).
The number of modules can be changed according to actual needs. 4) Diverse communication modes: module communication can be carried out by CAN bus network, serial communication of reserved modules in motherboard or even the communication through parallel interface.
[9] Zhao, Lei ; Chen, Geng ; Yu, Wenhua “A novel enhancing technique for parallel FDTD method using processor affinity and NUMA policy, ” Applied Computational Electromagnetics Society Journal ,Vol.27,No8 (2012), P638-645 [10] Park, Junyoung1, Hong, Injoon, “A multi-granularity parallelism object recognition processor with content-aware fine-grained task scheduling,” IEEE Symposium on Low-Power and High-Speed Chips - Proceedings for 2013 COOL Chips XVI (2013).
Online since: September 2014
Authors: Li Peng Zhu, Pei Yang, Bin Hu, Sen Pan
In the interior, a file is divided by block, and each Datanode can manage a number of blocks, as shown in Figure 1.
As a kind of efficient task scheduling model, MapReduce would divided a job into many more fine-grained sub tasks which can be scheduled among the free nodes to make sure that the faster node can process more tasks and avoiding the slowly node extend completion time.
For a large number of data, there exists noise or inconsistent data.
As a kind of efficient task scheduling model, MapReduce would divided a job into many more fine-grained sub tasks which can be scheduled among the free nodes to make sure that the faster node can process more tasks and avoiding the slowly node extend completion time.
For a large number of data, there exists noise or inconsistent data.
Online since: August 2013
Authors: Voicu Mager, Nicolae Bâlc, Mathias Fockele, Dan Leordean, Mircea Cristian Dudescu
These blocks consist of periodic cells in a scaffold-like structure, in which each cell is based on a number of truss elements or beams connected to each other.
A number of researchers developed some techniques to fabricate scaffolds, because the porous materials have an additional desired effect on promoting bone ingrowth [6].
Commercially Pure Porous Titanium (CPPTi) powder was used, with a grain size distribution in the range 20 – 63 μm (TLS Technik GmbH-Germany). 75 W Laser power, 30 μm point distance (PD) and 60 μs exposure time (ET) as parameters for the machine and the new command “ Point structure “ of the ReaLizer Software were used .
A number of researchers developed some techniques to fabricate scaffolds, because the porous materials have an additional desired effect on promoting bone ingrowth [6].
Commercially Pure Porous Titanium (CPPTi) powder was used, with a grain size distribution in the range 20 – 63 μm (TLS Technik GmbH-Germany). 75 W Laser power, 30 μm point distance (PD) and 60 μs exposure time (ET) as parameters for the machine and the new command “ Point structure “ of the ReaLizer Software were used .
Online since: January 2013
Authors: Zhi Ming Wang, Song Lin Yi, Xian Zhong Yi, Wei Chang
After cleaned, rock-cuttings samples are classified and numbered.
Then, they are deposited at lucid glass containers in serial numbers shown in Fig.1(b) and (c).
[5] Li Li, Hongbin Liu, Xiangping Yang etal, Study on sedimentation law of cuttings grains in solid/liquid separator, Natural Gas Industry , 2005, 25 (11): 62~65.IN Chinese
Then, they are deposited at lucid glass containers in serial numbers shown in Fig.1(b) and (c).
[5] Li Li, Hongbin Liu, Xiangping Yang etal, Study on sedimentation law of cuttings grains in solid/liquid separator, Natural Gas Industry , 2005, 25 (11): 62~65.IN Chinese
Online since: January 2019
Authors: Yi Han Zhou
In the case of leather, mold can cause mildew on the surface of the leather, leaving the grain of the leather tarnished.
From 11 h, as the heating time increases, the number of silver particles increases gradually.
Fig. 4 shows (1) nano silver sphere particles; (2) silver particles and silver lines containing a large number of cubic silver blocks; (3) silver wires with larger diameters; and (4) silver wires with small diameters.
From 11 h, as the heating time increases, the number of silver particles increases gradually.
Fig. 4 shows (1) nano silver sphere particles; (2) silver particles and silver lines containing a large number of cubic silver blocks; (3) silver wires with larger diameters; and (4) silver wires with small diameters.
Online since: July 2014
Authors: He Yuan Wu, Bin Hao
Medium-coarse grained sandstone of relatively low textural and compositional maturity of Yunmengshan formation overlays disconformably on the volcanic rock series of underlying Xushanformatiom(Fig. 3).
The basic characteristics of these third-order sequences are that transgressive system tracts and highstand system tracts of the sequences develop medium-coarse feldspathic sandstone which represents high-energy subtidal flat(Fig.E), and a number of thick basal clastic meter-scale cyclicsequence belongs to tidal dynamic type are formed by it and intertidal flat thin-bedded argillaceous sandstone or supratidal flat thin-bedded sandy shale together (ab, ac and ad of Fig.2); in the period of forced regression, thin basal meter-scale cyclic-sequence belong to tidal dynamic type, which is formed by intertidal flat argillaceous sandstone or supratidal flat medium-thin-bedded sandy shale, is developed (bc and cd of Fig.2).
A: purple-red silty shale of the top of Baicaoping formation, B: lenticular bedding within Baicaoping formation, C: wave-generated tidal bundle in the bottom of Baicaoping formation, D: the boundary ofBaicaoping and Yunmengshan formation, E: vein tidal bedding of the top of Yunmengshan formation, DS1-DS4: serial number of third-order sequence, TST: transgressive system tract, HST: highstand system tract, FRST: forced regressivesystem tract.
The basic characteristics of these third-order sequences are that transgressive system tracts and highstand system tracts of the sequences develop medium-coarse feldspathic sandstone which represents high-energy subtidal flat(Fig.E), and a number of thick basal clastic meter-scale cyclicsequence belongs to tidal dynamic type are formed by it and intertidal flat thin-bedded argillaceous sandstone or supratidal flat thin-bedded sandy shale together (ab, ac and ad of Fig.2); in the period of forced regression, thin basal meter-scale cyclic-sequence belong to tidal dynamic type, which is formed by intertidal flat argillaceous sandstone or supratidal flat medium-thin-bedded sandy shale, is developed (bc and cd of Fig.2).
A: purple-red silty shale of the top of Baicaoping formation, B: lenticular bedding within Baicaoping formation, C: wave-generated tidal bundle in the bottom of Baicaoping formation, D: the boundary ofBaicaoping and Yunmengshan formation, E: vein tidal bedding of the top of Yunmengshan formation, DS1-DS4: serial number of third-order sequence, TST: transgressive system tract, HST: highstand system tract, FRST: forced regressivesystem tract.
Online since: October 2016
Authors: S.C. Prasanna, C. Ramesh, R. Manivel, A. Manikandan
There are number of Al-alloys among which Al6061 alloy are used in the various application like Aircraft and aerospace component, Marine fittings, Transport, Bicycle frames, Drive shafts, Brake components and Electrical fittings and connectors and also have superior properties like Good surface finish, Good corrosion resistance to sea water, Good workability, Excellent corrosion resistance to atmospheric conditions and Good toughness.
There are number of materials such as SiC, Al2O3, B4C, TiB2, ZrO2, SiO2 and graphite are being used as reinforcements to increases the properties of 6061Al alloy.
Micro structural characterization of the composite material state the fairly uniform distribution and some quantity of grain refinement in the specimens and the hardness and tensile properties has increases with AA6061 reinforced Al2O3 at 12% [5].
There are number of materials such as SiC, Al2O3, B4C, TiB2, ZrO2, SiO2 and graphite are being used as reinforcements to increases the properties of 6061Al alloy.
Micro structural characterization of the composite material state the fairly uniform distribution and some quantity of grain refinement in the specimens and the hardness and tensile properties has increases with AA6061 reinforced Al2O3 at 12% [5].
Online since: May 2017
Authors: Petr Hájek, Lenka Laiblová, Michal Ženíšek, Tomáš Vlach, Jakub Řepka, Pavel Kokeš
Table 1 Concrete mixture composition
Cement I 42.5R [kg/m3] 680
Silica sand [kg/m3] 960
Silica flour [kg/m3] 325
Silica fume [kg/m3] 175
Superplasticizers [kg/m3] 29
Water [kg/m3] 171
Total [kg/m3] 2340
Largest grains of technical silica sand used in the mixture had the diameter of 1.2 mm.
This approach considerably reduced the number of holes in specimen’s ribs (Fig. 1c) and also improved quality of obverse surface.
Fig. 4 Non-lightened specimens; graph (a) and crack development (b) Conclusion The research showed that improvements of lightened testing specimen production technology managed to decrease number of imperfections, but were unable to completely eliminate them (there was still deviation up to 30% from the average of the measured values).
This approach considerably reduced the number of holes in specimen’s ribs (Fig. 1c) and also improved quality of obverse surface.
Fig. 4 Non-lightened specimens; graph (a) and crack development (b) Conclusion The research showed that improvements of lightened testing specimen production technology managed to decrease number of imperfections, but were unable to completely eliminate them (there was still deviation up to 30% from the average of the measured values).