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Online since: February 2014
Authors: S.M. Mohaiminul Islam, Bishwajeet Pandey, Md. Mahbub-E-Noor, Shah Md. Tanvir Siddiquee, Shashank Jaiswal
Moreover, individual cell balancing and monitoring circuit with a lesser size are required in a large number of battery cells.
For a large number of battery cells, a traditionally equalizer has the inconvenience of individual cell balancing and the implementation size problem as well as the cost [5].
Park , Gun-Woo Moon , “A Modularized Two-Stage Charge Equalizer With Cell Selection Switches for Series-Connected Lithium-Ion Battery String in an HEV”, IEEE Transactions on Power Electronics, Volume: 27, Issue: 8, pp. 3764-3774, 2012 [6] Vishal Gupta, Montek Singh, “Energy conservation in asynchronous systems using self-adaptive fine-grain voltage scaling”, International Green Computing Conference (IGCC), pp. 1-8, 2013 [7] C.
For a large number of battery cells, a traditionally equalizer has the inconvenience of individual cell balancing and the implementation size problem as well as the cost [5].
Park , Gun-Woo Moon , “A Modularized Two-Stage Charge Equalizer With Cell Selection Switches for Series-Connected Lithium-Ion Battery String in an HEV”, IEEE Transactions on Power Electronics, Volume: 27, Issue: 8, pp. 3764-3774, 2012 [6] Vishal Gupta, Montek Singh, “Energy conservation in asynchronous systems using self-adaptive fine-grain voltage scaling”, International Green Computing Conference (IGCC), pp. 1-8, 2013 [7] C.
Online since: March 2007
Authors: Dong Sik Bae, Teresa Oh, Myung Ho Kim
The narrow scan FTIR spectrum of the same sample is displayed in
the Fig 2 shows the bond vibration at the region of 740 cm-1, 890 cm-1 due to Si-C and Si-O
1000 1500 2000 2500 3000 3500
on SiOC film with a blue shift
pentacene@Si
SiOC
pentacene@SiOC
Wave number (cm
-1
)
Absorbance (arb.units)
700 800 900 1000 1100 1200
730
pentacene
@SiOC
SiOC
pentacene
@Si
Absorbance (arb.units)
Wave number (cm
-1
)groups.
Many grains at the surface of sample in the SEM microphotograph represent the gradient formation pentacene molecule on SiOC film due to the elimination of the dangling bond of the terminal pentacenc molecule.
Many grains at the surface of sample in the SEM microphotograph represent the gradient formation pentacene molecule on SiOC film due to the elimination of the dangling bond of the terminal pentacenc molecule.
Online since: May 2006
Authors: Christoph Krause, Patricie Merkert, Martin Dietrich, Meinhard Kuntz
Today's materials have substantially lower grain size and posses a much
higher density level than early ceramics.
In contrast, implant failure is in general not caused by any material degradation, as it has been shown that strength of the material is maintained without noteworthy degradation over a much longer time span. 0 10 20 30 40 50 60 70 80 90 100 0 12 24 36 48 60 72 84 96 108 Months Accumulated implant failures [%] Fig. 1: Accumulated number of ceramic implant failures versus implantation duration of all reported cases up to May 2005 Through this analysis an extrapolation of expected complication rates per production year can be established, as it is shown in Fig. 2.
For example, from production year 2000 the number of failures that have been reported until May 2005 equal a failure rate of 0,028%.
In contrast, implant failure is in general not caused by any material degradation, as it has been shown that strength of the material is maintained without noteworthy degradation over a much longer time span. 0 10 20 30 40 50 60 70 80 90 100 0 12 24 36 48 60 72 84 96 108 Months Accumulated implant failures [%] Fig. 1: Accumulated number of ceramic implant failures versus implantation duration of all reported cases up to May 2005 Through this analysis an extrapolation of expected complication rates per production year can be established, as it is shown in Fig. 2.
For example, from production year 2000 the number of failures that have been reported until May 2005 equal a failure rate of 0,028%.
Online since: March 2004
Authors: B. Zhang, Zhao Hui Deng, Q.Y. Jin
Journal Title and Volume Number (to be inserted by the publisher) 275
a.
The dominant material removal mechanism is dependent on material microstructural parameter, e.g. hardness, toughness, grain size, porosity etc..
Journal Title and Volume Number (to be inserted by the publisher) 277 References [1] X.B.
The dominant material removal mechanism is dependent on material microstructural parameter, e.g. hardness, toughness, grain size, porosity etc..
Journal Title and Volume Number (to be inserted by the publisher) 277 References [1] X.B.
Online since: June 2012
Authors: Da Ming Chen, Yan Yuan Liang, Jiang Feng Tong
Introduction
Morphological control of monodisperse, anisotropic single crystals of metal oxides has been an important issue in the materials industry during the past few decades. α-alumina is one of the metal oxides most widely used in applications, highly important in many fields of electronics and engineering, such as catalysis, microelectronics, lasers, optics, refractories, but the different Morphology is required according to different usage, spherical particles are good for packing while molding in ceramic preparation process, platelet particles are efficient on polishing, while elongated grains introduced as the second phase can function as reinforcements similar to whiskers or fibers in reinforced ceramics which can improve the fracture toughness appearently. α-alumina particles have been synthesized with many methods and show different morphologies synthesized with different additives.
The energy at the surface (SE) can be calculated thus: SE = (Esurface - N*(Ebulk/n))/(2*A) (1) where N is the number of atoms in the Surface cell, n is the number of atoms in the bulk cell, and A is the area of the surface.The surface area for this system can be found in this manner: A=a*b * sin(γ) (2) Results and Discussion Calculation result.
The energy at the surface (SE) can be calculated thus: SE = (Esurface - N*(Ebulk/n))/(2*A) (1) where N is the number of atoms in the Surface cell, n is the number of atoms in the bulk cell, and A is the area of the surface.The surface area for this system can be found in this manner: A=a*b * sin(γ) (2) Results and Discussion Calculation result.
Online since: May 2014
Authors: Li Wang, Nan Nan Lv, Li Na Ke
Table 1 Economy indicators
No.
indicator
Meaning
1
x1
the administrative area of land area [square kilometer]
2
x2
the total population at the end of the year[million people]
3
x3
the first industrial added value [billion yuan]
4
x4
the second industrial added value[million yuan]
5
x5
local finance general budget revenue [million yuan]
6
x6
local government budgetary expenditure [million yuan]
7
x7
the balance of savings deposits of urban and rural residents [million yuan]
8
x8
balance of loans of financial institutions [million yuan]
9
x9
total grain yield [ton]
10
x10
the total output of meat [ton]
11
x11
above scale industrial output value [million yuan]
12
x12
the amount of urban fixed asset investment [million yuan]
13
x13
students enrollment of secondary schools [people]
14
x14
the number of students in primary school [people]
15
x15
hospitals and hospital beds [bed]
16
x16
various social welfare adopting institutions beds[bed]
Comprehensive Development Strength Evaluation Model
Wk = λk / (2) Among them, i is the main component analysis according to the number of principal component principal component variance contribution rate selection.
Wk = λk / (2) Among them, i is the main component analysis according to the number of principal component principal component variance contribution rate selection.
Online since: December 2006
Authors: Zhao Qian Li, Chuan Zhen Huang, Fu Tian Liu, Wei Ling Huang, Wen Hu Li, Zi Run Yang
It
illustrates that all the density numbers of ternary boride hard alloy are less than that of the general
hard alloy and about equivalent to that of steel.
The density number is about 7.5~8.
The grain boundary of combine between the horniness phase and the bonding phase base Fe is very obvious and compact, and the void radio is lower.
The density number is about 7.5~8.
The grain boundary of combine between the horniness phase and the bonding phase base Fe is very obvious and compact, and the void radio is lower.
Online since: September 2011
Authors: Xiao Jun Zhao, Yong Jiang Yu, Xian Hua Zhang, Yuan Wang, Feng Lu, Di Zheng, Yong Jie Shi
A number of studies have been done to investigate the impact factors on the material removal.
Experiment and Results A number of planner specimens were prepared with the same material, dimension, and machining process.
In the polishing process, diamond paste with a grain size of 0.5µm was used, and Kw for aluminum was obtained as .
Experiment and Results A number of planner specimens were prepared with the same material, dimension, and machining process.
In the polishing process, diamond paste with a grain size of 0.5µm was used, and Kw for aluminum was obtained as .
Online since: December 2012
Authors: Marcel Behún, Jozef Jurko, Anton Panda
These are the rules of success for the majority of production procedures, i.e. to make the maximum number of projects per unit of time.
Samples were then preserved in dentacryle and prepared via the defined metallographic procedure (sharpened with 240, 400, 600 and 800 type sandpaper, dampened with water, polished with diamond paste, 1/0 grain on satin dampened with kerosine, washed and rinsed in benzine alcohol).
Fig. 4 Recordings from the measurement of surface roughness for selected samples Conclusion The following conclusions for theory are derived from the results of experiments : · definition of conditions for achieving productive drilling, · determining the impact of changing the number of created holes on the accuracy of the produced diameter, · achieving hole accuracy under H7, · verifying new progressive structures with the aim of eliminating negative effects, Increased demands on the quality of holes calls for considering a series of factors, for example: · the drill must be checked on a regular basis, throughout the entire service life of the tool, to ensure its reliability and long service life, · the type of drill and its geometry (mainly the primary cutting edge angle) impacts the quality of making holes
Samples were then preserved in dentacryle and prepared via the defined metallographic procedure (sharpened with 240, 400, 600 and 800 type sandpaper, dampened with water, polished with diamond paste, 1/0 grain on satin dampened with kerosine, washed and rinsed in benzine alcohol).
Fig. 4 Recordings from the measurement of surface roughness for selected samples Conclusion The following conclusions for theory are derived from the results of experiments : · definition of conditions for achieving productive drilling, · determining the impact of changing the number of created holes on the accuracy of the produced diameter, · achieving hole accuracy under H7, · verifying new progressive structures with the aim of eliminating negative effects, Increased demands on the quality of holes calls for considering a series of factors, for example: · the drill must be checked on a regular basis, throughout the entire service life of the tool, to ensure its reliability and long service life, · the type of drill and its geometry (mainly the primary cutting edge angle) impacts the quality of making holes
Online since: February 2006
Authors: Long Liang, Ming Sheng He, Hong Lin, Xiao Zhan Yang, Jian Bao Li, Gang Feng Guo
Size(um) Sintering
temperature(°C)
1 200(1#) 1250
2 200(1#) 1275
3 200(1#) 1300
4 200(1#) 1325
5 200(1#) 1350
6 300(2#) 1250
7 300(2#) 1275
8 300(2#) 1300
9 300(2#) 1325
10 300(2#) 1350
Results and Discussion
Corresponding to its processing parameters, a number of data were collected to characterize the
microstructure of the ceramic body .The mean pore size, overall porosity, PWP and permeability can
all be shown as a function of the sintering temperature, where the smaller sized samples are compared
with the larger ones.
Since no continuous interconnection was in the powder compacts, the porosimetry results in Fig. 2 actually reflect the size and distribution of pore channels between SiC grains.
Figure 4 shows the PWP behavior of all the samples tested at a number of different pressures.
Since no continuous interconnection was in the powder compacts, the porosimetry results in Fig. 2 actually reflect the size and distribution of pore channels between SiC grains.
Figure 4 shows the PWP behavior of all the samples tested at a number of different pressures.