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Online since: August 2014
Authors: Chang Cheng Chen, Yi Xuan Qiu
For extruded micro gear, the grain size of tooth-shaped portion is smaller than that of the central; the extruded micro gears are generally stronger than the hydraulic manufactured gears.
The tooth number of bigger gear is 24 with a module of 0.15mm; while the tooth number of smaller gear is 20 with a module of 0.12mm.
The most important parameters are the module, m, the number of teeth, Z, other parameters such as the pitch circle radius, r, the base circle radius,, the root circle radius,, addendum circle radius,,etc. can be calculated by the geometric relation
The tooth number, N, of bigger gear is 24 with a module of 0.15mm; while the tooth number of smaller gear is 20 with a module of 0.12mm.
Chang, Superplastic micro-forming with a fine grained Zn–22Al eutectoid alloy using hot embossing technology, Journal of Materials Processing Technology, 180, pp.17-22, 2006
The tooth number of bigger gear is 24 with a module of 0.15mm; while the tooth number of smaller gear is 20 with a module of 0.12mm.
The most important parameters are the module, m, the number of teeth, Z, other parameters such as the pitch circle radius, r, the base circle radius,, the root circle radius,, addendum circle radius,,etc. can be calculated by the geometric relation
The tooth number, N, of bigger gear is 24 with a module of 0.15mm; while the tooth number of smaller gear is 20 with a module of 0.12mm.
Chang, Superplastic micro-forming with a fine grained Zn–22Al eutectoid alloy using hot embossing technology, Journal of Materials Processing Technology, 180, pp.17-22, 2006
Online since: August 2024
Authors: Louis Ahouet, Franck Taillandier, Sylvain Ndinga Okina, Destinée Ounina
While, the addition
of PKS aims to take advantage of the effects of its coarse grain size and its mechanical resistance on
the concrete properties.
The granular class of the aggregates is 10/25, and it contains a low proportion of fine grains.
This change can be explained by the nature of the bonds between natural aggregates size grains and palm kernel shells, their grain size and their high rate of water absorption, which influence the compactness of the granular skeleton of the concrete.
Afrifa, Comparative Study of the Physical Properties of Palm Kernel Shells Concrete and Normal Weight Concrete in Ghana, Journal of Science and Multidisciplinary Research (2013), Volume 5, Number 1
Tests for determining the geometrical characteristics of aggregates - Part 1: Determination of grain size - Grain size analysis by sieving.
The granular class of the aggregates is 10/25, and it contains a low proportion of fine grains.
This change can be explained by the nature of the bonds between natural aggregates size grains and palm kernel shells, their grain size and their high rate of water absorption, which influence the compactness of the granular skeleton of the concrete.
Afrifa, Comparative Study of the Physical Properties of Palm Kernel Shells Concrete and Normal Weight Concrete in Ghana, Journal of Science and Multidisciplinary Research (2013), Volume 5, Number 1
Tests for determining the geometrical characteristics of aggregates - Part 1: Determination of grain size - Grain size analysis by sieving.
Online since: March 2015
Authors: Magdalena Popczyk, Bożena Łosiewicz, Iwona Napłoszek, A. Budniok
They were obtained in a sulfonate bath containing a suspension of the aluminum powder with a grain diameter of 1-4 mm.
The research [23] investigated the effect of the titanium content in the coating and the size of its grains on the process of hydrogen evolution at 5 M KOH.
The coatings containing about 22 wt.% of Ti with the grain diameter of 150 and 45 mm and the coating containing about 50 wt.% of Ti with the grain diameter of about 45 mm were included in the research.
The research into the coatings which used the Auger electron spectroscopy showed that in the process of electrodeposition the Ti10O19 non-stoichiometric titanium oxide and the NiTi alloy are formed on grain boundaries between the built-in components of the composite and the matrix.
A simultaneous increase in the current density and lowering of the temperature caused a decrease in the number of particles contained in the coating.
The research [23] investigated the effect of the titanium content in the coating and the size of its grains on the process of hydrogen evolution at 5 M KOH.
The coatings containing about 22 wt.% of Ti with the grain diameter of 150 and 45 mm and the coating containing about 50 wt.% of Ti with the grain diameter of about 45 mm were included in the research.
The research into the coatings which used the Auger electron spectroscopy showed that in the process of electrodeposition the Ti10O19 non-stoichiometric titanium oxide and the NiTi alloy are formed on grain boundaries between the built-in components of the composite and the matrix.
A simultaneous increase in the current density and lowering of the temperature caused a decrease in the number of particles contained in the coating.
Online since: April 2011
Authors: M. Vázquez da Silva, João M.P.Q. Delgado
In this work, we consider that water vapour transfer in the intergranular spaces of the grain mass is governed by molecular diffusion.
With the objective to assess the validate of the cylindrical pore model we measured the increase of total mass of the system based on a relationship between the increase of water vapour mass per pore, the number of pores considered per cm2 and the total mass transfer area.
Figures 7 to 9 and Table 1 shows the relation between the number of pores and the pore internal radium, for the three cases studied (, and ).
Nomenclature A Area N Local flux of solute aw Water activity p Perimeter b Water vapour mass in the product Saturation pressure c Solute concentration Ideal gas constant c* Equilibrium concentration of solute Rint Radius of particles cs Surface concentration T Absolute temperature c1 Isotherm constant of silica gel t Time C Dimensionless solute concentration V Volume Cs Dimensionless surface concentration z Cartesian coordinate Recipient diameter Z Dimensionless Cartesian coordinate Dm Molecular diffusion coefficient External resistance kTM Mass transfer coefficient Bed voidage m Water vapour mass q Product mass per pore interior volume Water molecular weight r Density Npores Number of pores t Tortuosity References [1] D.F.
With the objective to assess the validate of the cylindrical pore model we measured the increase of total mass of the system based on a relationship between the increase of water vapour mass per pore, the number of pores considered per cm2 and the total mass transfer area.
Figures 7 to 9 and Table 1 shows the relation between the number of pores and the pore internal radium, for the three cases studied (, and ).
Nomenclature A Area N Local flux of solute aw Water activity p Perimeter b Water vapour mass in the product Saturation pressure c Solute concentration Ideal gas constant c* Equilibrium concentration of solute Rint Radius of particles cs Surface concentration T Absolute temperature c1 Isotherm constant of silica gel t Time C Dimensionless solute concentration V Volume Cs Dimensionless surface concentration z Cartesian coordinate Recipient diameter Z Dimensionless Cartesian coordinate Dm Molecular diffusion coefficient External resistance kTM Mass transfer coefficient Bed voidage m Water vapour mass q Product mass per pore interior volume Water molecular weight r Density Npores Number of pores t Tortuosity References [1] D.F.
Online since: August 2014
Authors: Jin Rui Zhang, Li Bing Zhao, Bing Liang, Ao Shu Meng, Dong Mei Che, Xiao Xue Li, Hao Yu, Zhong Quan Wang
Ore grain size overflow of concentrate before the strong magnetism from Sijiaying are shown in Figure 1, average particle size is 19.17um,-32um occupied about 70%. pulp density is about 10%, there are mainly hematite, quartz, chlorite in it.
(serial number: E2013209308) Supported by the scientific research fund project of Hebei United University.
(serial number: Z201301) Innovative Experimental Program for Undergraduates.
(serial number: X2013082) References [1] Wang yankun.
(serial number: E2013209308) Supported by the scientific research fund project of Hebei United University.
(serial number: Z201301) Innovative Experimental Program for Undergraduates.
(serial number: X2013082) References [1] Wang yankun.
Online since: February 2012
Authors: Uche G. Nwokeke, Francisco Nacimiento, José R. González, Ricardo Alcántara, José L. Tirado, Carlos Pérez-Vicente
The specific capacity as function of cycle number is shown in Fig. 10.
The absence of narrow and intense peaks let us to discard the occurrence of large grains of crystalline LixSn phases.
Capacity vs. cycle number.
The Rsl values are 81.3 and 74.5 Ohm for the cycle number 18 to 30, respectively.
The Rct values are 309.9 and 307.9 Ohm for the cycle number 18 and 30, respectively.
The absence of narrow and intense peaks let us to discard the occurrence of large grains of crystalline LixSn phases.
Capacity vs. cycle number.
The Rsl values are 81.3 and 74.5 Ohm for the cycle number 18 to 30, respectively.
The Rct values are 309.9 and 307.9 Ohm for the cycle number 18 and 30, respectively.
Online since: January 2011
Authors: Ci Li Li, Chun Ran Han
Introduction
kidney beans (Phaseolus vulgaris L)belong to Papilionaceae, Phaseolus,which are not only rich in nutrients, but also have medical effects, not only traditional grains, but also modern healthy foods, and are popular in both domestic and foreign markets.
In this study, 10 g of soybeans were soaked in water and 90 ml of water was added to grind, after filtration, 2% of which was added to the kidney bean cultivation juice, cultivate at 37℃, and determine the number of the living bacteria.
Tomato juice, wort, and soybean milk was added as growth promoting substances to the kidney bean cultivation juice at the amount of 3%,after cultivation at 37℃ for some time, the living numbers of bacteria was shown in Figure 4.
Figure 4 Growth curve after addition of growth promoting substances From Fig 4, we can see that all the substances added can improve the growth of lactic acid bacteria, after the addition of soybean juice, the increase of the bacteria number was very obvious, because there was very rich nitrogen compounds in soybean juice, which had significant effect on the growth of lactobacillus, so soybean milk was selected as the growth promoting substance.
In this study, 10 g of soybeans were soaked in water and 90 ml of water was added to grind, after filtration, 2% of which was added to the kidney bean cultivation juice, cultivate at 37℃, and determine the number of the living bacteria.
Tomato juice, wort, and soybean milk was added as growth promoting substances to the kidney bean cultivation juice at the amount of 3%,after cultivation at 37℃ for some time, the living numbers of bacteria was shown in Figure 4.
Figure 4 Growth curve after addition of growth promoting substances From Fig 4, we can see that all the substances added can improve the growth of lactic acid bacteria, after the addition of soybean juice, the increase of the bacteria number was very obvious, because there was very rich nitrogen compounds in soybean juice, which had significant effect on the growth of lactobacillus, so soybean milk was selected as the growth promoting substance.
Online since: April 2007
Authors: Long Tu Li, Zhen Xing Yue, Jian Qiang Zhao, Wei Qiang Wang
Introduction
Lead zirconate titanate (PZT) perovskite ferroelectric ceramics have been considered for a number of
applications in actuators and nonvolatile memories [1,2].
After all, space charges and the local alignment of defect dipoles could be easily formed at domain walls or grain boundary under driving field.
Different samples were used for different cycling numbers.
(a) Correlation between d33 and ε before and after fatigue under all cycling fields; (b) d33 and ε as a function of cycle number.
After all, space charges and the local alignment of defect dipoles could be easily formed at domain walls or grain boundary under driving field.
Different samples were used for different cycling numbers.
(a) Correlation between d33 and ε before and after fatigue under all cycling fields; (b) d33 and ε as a function of cycle number.
Online since: October 2014
Authors: Zaliman Sauli, Hussin Kamarudin, Vithyacharan Retnasamy, Chai Jee Keng, Moganraj Palianysamy
Focusing to the material of interest which is the ITO, it has a number of critical problems.
The films were deposited with varied time and number of layers.
Table 1 :ITOSample description Sample Number Of Layers Deposition Time(min) 1 1 5 2 2 10 3 3 15 4 4 20 5 1 30 6 2 60 7 3 90 8 4 120 The samples are analyzed for its reflectance using the Perkin Elmer Lambda 950 UV/Vis/NIR Spectrophotometer.
Nano-grained thin-film indium tin oxide gas sensors for H2 detection.
The films were deposited with varied time and number of layers.
Table 1 :ITOSample description Sample Number Of Layers Deposition Time(min) 1 1 5 2 2 10 3 3 15 4 4 20 5 1 30 6 2 60 7 3 90 8 4 120 The samples are analyzed for its reflectance using the Perkin Elmer Lambda 950 UV/Vis/NIR Spectrophotometer.
Nano-grained thin-film indium tin oxide gas sensors for H2 detection.
Online since: October 2013
Authors: Hong Bin Wang, Xue Gong Qiao, Yue Qi Han, Jie Zhang
First, the nodes exchange the typical distance vector protocol, each node makes the network access to the anchor minimum number of hops between nodes.
Anchor node density is discussed below, node density, node communication radius and the location of the number of circulating modified the traditional DV-Hop algorithm and the improved positioning accuracy of the algorithm.
Fig.2 is a 100m × 100m region of the random distribution of nodes, each node randomly generated coordinates, in which the number of anchor nodes and unknown nodes, respectively: 20 and 180, respectively, with circles and black dots.
From the figure we can see, with the total number of nodes increases, the average location error of two algorithms are gradually reduced.
Dynamic fine grained localization in Ad-Hoc sensor networks[C].
Anchor node density is discussed below, node density, node communication radius and the location of the number of circulating modified the traditional DV-Hop algorithm and the improved positioning accuracy of the algorithm.
Fig.2 is a 100m × 100m region of the random distribution of nodes, each node randomly generated coordinates, in which the number of anchor nodes and unknown nodes, respectively: 20 and 180, respectively, with circles and black dots.
From the figure we can see, with the total number of nodes increases, the average location error of two algorithms are gradually reduced.
Dynamic fine grained localization in Ad-Hoc sensor networks[C].