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Online since: September 2013
Authors: Fa Gui Liu, Nan He, Ying Yi Yang, Jin Yang, Xiao Ke Zhang, Yu Song Peng
Kai Yang et. al have studied the principle of open source OSGi framework, the core specification and open source OSGi framework, who also design and implement a variety of OSGi framework for functional testing and performance testing; however, what they focus on is functionality and performance testing in different frameworks, which belongs to coarse-grained testing[4].
At the same time, test running area will trigger the extraction of the testing details in data collection module, such as the number of successful and failing use case, successes and failures information and error tracking information.
Finally, data collection module will call data management module to process a large number of extracted testing data, and data storage module will store them in the data storage area.
At the same time, test running area will trigger the extraction of the testing details in data collection module, such as the number of successful and failing use case, successes and failures information and error tracking information.
Finally, data collection module will call data management module to process a large number of extracted testing data, and data storage module will store them in the data storage area.
Online since: April 2013
Authors: N.P. Rajesh, P.V. Dhanaraj
The DC recorded for B2APS single crystal using diffracting planes (Fig. 3) contains a single peak and indicates that the specimen is free from structural grain boundaries.
Plot of Vickers number versus load Fig. 5.
Mechanical studies reveal that Vickers microhardness number increases with applied load.
Plot of Vickers number versus load Fig. 5.
Mechanical studies reveal that Vickers microhardness number increases with applied load.
Online since: December 2012
Authors: Jing Fu, Sheng He Wu
Table 1 The main diagenesis intensity classification(Wushenghe,2010)
compaction
cementation
dissolution
compaction strength
contacts of grains
compacted rate/%
cementation intensity
cementation rate/%
dissolution
intensity
dissolution rate/%
extremely strong compaction
concave convex to line contact
> 90
strong
cementation
>75
strong
dissolution
>75
strong compaction
line contact
75 ~ 90
medium
compaction
point to line contact
50 ~ 75
medium
cementation
50 ~ 75
medium
dissolution
50 ~ 75
weak compaction
point contact
<50
weak cementation
<50
weak dissolution
<50
Characteristics and quantitative intensity of cementation
Characteristics of cementation.
The secondary dissolution pores are relatively developed in the study area mainly because the compaction is intense and a small number of primary pores are preserved, while a large number of soluble components (feldspars and debris etc.) make later dissolution in the later phase materially possible.
The secondary dissolution pores are relatively developed in the study area mainly because the compaction is intense and a small number of primary pores are preserved, while a large number of soluble components (feldspars and debris etc.) make later dissolution in the later phase materially possible.
Online since: October 2013
Authors: Hao Guo, Jun Ye Li, Teng Fei Ma
processing, while high volume fraction is suitable for one piece polishing.
3.2 The pressure and processing quality
Using one inlet and eight outlets for the simulation processing of common-rail pipe, and abrasive volume fraction is 0.4, we select the inlet and outlet pressure of 2and 1, 4and 3, 5and 3, 8and 5, and could obtain dynamic pressure, velocity vector, turbulent kinetic energy contours of machining process as shown in Figure 8 and Figure 9 and Figure 10 :
a)2and 1 b) 4and 3 c)5and 3 d)8and 5
Fig.8 The contours of dynamic pressure
a)2and 1 b) 4and 3 c)5and 3 d)8and 5
Fig.9 The contours of velocity vector
a)2and 1 b) 4and 3 c)5and 3 d)8and 5
Fig.10 The contours of turbulent kinetic energy
It can be seen from Figure 8 and Figure 9 and Figure 10, with the pressure difference between inlet and outlet becoming larger, the dynamic pressure, velocity vector, turbulent kinetic energy of abrasive flow in common-rail pipe is also increasing, and the number
With the pressure difference between inlet and outlet becoming larger, the number of abrasive contact with machining surface will increase, which can help to improve the efficiency of polishing.
Experimental investigation into cutting forces and active grain density during abrasive flow machining[J].
With the pressure difference between inlet and outlet becoming larger, the number of abrasive contact with machining surface will increase, which can help to improve the efficiency of polishing.
Experimental investigation into cutting forces and active grain density during abrasive flow machining[J].
Online since: May 2015
Authors: Kok Tee Lau, Mohd Zulkefli Selamat, Ridhwan Jumaidin, Nurulfazielah Nasir, Suhaila Salleh
The results show that increasing sintering temperature proportionally increases number of pores in the porous ceramic sample.
This finding is equivalent with the finding by Han et.al [8] in which when the sintering temperature is increased, the particles grow up and turn into large particle grains.
From these results, using yeast as pore-forming agent yields bigger size but less number of pores in porous ceramic compared to using aluminium powder with polymeric spheres mixture.
This finding is equivalent with the finding by Han et.al [8] in which when the sintering temperature is increased, the particles grow up and turn into large particle grains.
From these results, using yeast as pore-forming agent yields bigger size but less number of pores in porous ceramic compared to using aluminium powder with polymeric spheres mixture.
Online since: May 2014
Authors: Yong Qing Wang, Jing Tian Tang, Xing Po Ma
In [13], the authors investigate the problem of finding a routing structure which can minimize the number of transmitted packets, and it is shown that routing packets on any two shortest path trees does not affect the effectiveness of data aggregation significantly.
In Table 1, ld denotes the size of a data item, R denotes the communication radius of a sensor node, Esent and Ercv denote the energy consumption by sending and receiving one bit of data respectively,mi denotes the number of data items generated in one epoch, Lquery denotes the bit length of a top-k query, and QR denotes the query region.
Verifiable fine-grained top-k queries in tiered sensor networks, In Proc. of IEEE INFOCOM, 2010
In Table 1, ld denotes the size of a data item, R denotes the communication radius of a sensor node, Esent and Ercv denote the energy consumption by sending and receiving one bit of data respectively,mi denotes the number of data items generated in one epoch, Lquery denotes the bit length of a top-k query, and QR denotes the query region.
Verifiable fine-grained top-k queries in tiered sensor networks, In Proc. of IEEE INFOCOM, 2010
Online since: March 2013
Authors: Song Li, Xiu Fang Sun, Jin Xi Mao
A large number of crop straws burned by farmers have great effect on the environment.Using of waste straws and rejected forest products as raw materials for production of decorative materials not only alleviates the shortage of wood supply, to make up for the lack of wood products, and fully complies with our national industrial policies of resource conservation and environmental protection to reduce air pollution.It is rated as a marvelous project of resource recycling utilization.
What’s more,the production cost is so high that the utilization rate of printing membrane materials can only reach 30%.Meanwhile, It would produce a large number of water pollution and air pollution in the process of production,that belongs to non-environmentally friendly production and non-environmentally friendly product ,so as to impede the development and application of water printing technology as a consequence.
Production process and excellent performance The technology of water printing ecological wood materials process abandoned crops such as maize straw, bean stalks, rice husk and sawdust into plant powder, and then add a certain amount of PVC used as raw materials in the extrusion equipment for pultrusion processing into various specifications of sections,plates and wires.However, the surface of the processed products is a substrate of a single color, and can not be applied directly.Thus it is indispensable to apply water printing technology to dip-coating print a variety of wood grain patterns on the surface of the products, and then process them into doors, floors and furniture products to meet the environmental performance of non-toxic, odorless, zero-formaldehyde, no harmful gas release, and can be recycled.
What’s more,the production cost is so high that the utilization rate of printing membrane materials can only reach 30%.Meanwhile, It would produce a large number of water pollution and air pollution in the process of production,that belongs to non-environmentally friendly production and non-environmentally friendly product ,so as to impede the development and application of water printing technology as a consequence.
Production process and excellent performance The technology of water printing ecological wood materials process abandoned crops such as maize straw, bean stalks, rice husk and sawdust into plant powder, and then add a certain amount of PVC used as raw materials in the extrusion equipment for pultrusion processing into various specifications of sections,plates and wires.However, the surface of the processed products is a substrate of a single color, and can not be applied directly.Thus it is indispensable to apply water printing technology to dip-coating print a variety of wood grain patterns on the surface of the products, and then process them into doors, floors and furniture products to meet the environmental performance of non-toxic, odorless, zero-formaldehyde, no harmful gas release, and can be recycled.
Online since: November 2017
Authors: Kateřina Opatová, Dagmar Bublíková, Bohuslav Mašek, Štěpán Jeníček
The reason is that it is a complex process, in which a number of parameters must be optimized.
Fig. 1 Prior austenite grain identified in a martensitic matrix after Q&P processing Fig. 2 Physical simulation in a thermomechanical simulator Experimental Programme For this experiment, three new experimental steels were created whose special chemistries lowered the Ms and Mf temperatures (Tab. 1).
Table 2 Heat treatment parameters and resulting mechanical properties Sequence number/steel TA [°C]/tA Cooling rate QT PT [°C/s] /tPT HV10 [-] Rm A5mm RA type [s] [°C/s] [°C] [s] [MPa] [%] [%] 1/AHSS1 850/100 1 150 250/600 587 2135 8 - 1/AHSS2 850/100 1 150 250/600 594 2137 10 - 1/AHSS3 850/100 1 150 250/600 587 2167 10 13 2/AHSS1 850/100 1 150 300/600 487 1799 11 - 2/AHSS2 850/100 1 150 300/600 518 1943 13 18 2/AHSS3 850/100 1 150 300/600 453 1660 13 - 3/AHSS1 850/100 1 150 400/600 488 1727 11 - 3/AHSS2 850/100 1 150 400/600 478 1842 14 36 3/AHSS3 850/100 1 150 400/600 490 1750 13 - 4/AHSS1 850/100 0,5 150 200/600 488 2308 11 8 4/AHSS2 850/100 0,5 150 200/600 521 2025 10 - 4/AHSS3 850/100 0,5 150 200/600 507 1864 8 - In the Q&P process, the soaking temperature (TA) was set at 850 °C and the time at temperature was 600 s.
Fig. 1 Prior austenite grain identified in a martensitic matrix after Q&P processing Fig. 2 Physical simulation in a thermomechanical simulator Experimental Programme For this experiment, three new experimental steels were created whose special chemistries lowered the Ms and Mf temperatures (Tab. 1).
Table 2 Heat treatment parameters and resulting mechanical properties Sequence number/steel TA [°C]/tA Cooling rate QT PT [°C/s] /tPT HV10 [-] Rm A5mm RA type [s] [°C/s] [°C] [s] [MPa] [%] [%] 1/AHSS1 850/100 1 150 250/600 587 2135 8 - 1/AHSS2 850/100 1 150 250/600 594 2137 10 - 1/AHSS3 850/100 1 150 250/600 587 2167 10 13 2/AHSS1 850/100 1 150 300/600 487 1799 11 - 2/AHSS2 850/100 1 150 300/600 518 1943 13 18 2/AHSS3 850/100 1 150 300/600 453 1660 13 - 3/AHSS1 850/100 1 150 400/600 488 1727 11 - 3/AHSS2 850/100 1 150 400/600 478 1842 14 36 3/AHSS3 850/100 1 150 400/600 490 1750 13 - 4/AHSS1 850/100 0,5 150 200/600 488 2308 11 8 4/AHSS2 850/100 0,5 150 200/600 521 2025 10 - 4/AHSS3 850/100 0,5 150 200/600 507 1864 8 - In the Q&P process, the soaking temperature (TA) was set at 850 °C and the time at temperature was 600 s.
Online since: January 2019
Authors: Alexander Vitalyevich Ozolin, Lev Ivanovich Svistun, Svetlana Alexandrovna Arefieva, Evgeniy Georgiyevich Sokolov
Metallic binders of diamond tools designed for processing hard ceramic and mineral materials have to feature a high resistance to abrasive wear under the action of particles of the material being processed and to retain diamond grains securely.
The backscattered electron microstructure images were obtained with contrast depending on the atomic numbers of the components.
This is confirmed by copper forming a number of intermetallic compounds with tin while with cobalt it forms a system with limited solubility and peritectic transformation.
The backscattered electron microstructure images were obtained with contrast depending on the atomic numbers of the components.
This is confirmed by copper forming a number of intermetallic compounds with tin while with cobalt it forms a system with limited solubility and peritectic transformation.
Online since: May 2007
Authors: Gun Dae Lee, Seong Soo Park, Seong Soo Hong, Tae Gun Kim, Hae Joeng Kim, Jeong Ja Kim, Sung Woong Kim
The crystallite grain size was estimated according to Scherrer formula [5].
It was also suggested that poorly crystalline powder or powder with small crystallite sizes would contain a larger number of lattice defects, such as interstitial ions or ion vacancies, and the fewer the number of defects present in the crystals, the slower the conversion to rutile [10].
It was also suggested that poorly crystalline powder or powder with small crystallite sizes would contain a larger number of lattice defects, such as interstitial ions or ion vacancies, and the fewer the number of defects present in the crystals, the slower the conversion to rutile [10].