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Online since: October 2013
Authors: S. Natarajan, N.V. Mahalakshmi, S. Sundarraj
Ethanol can be manufactured by the fermentation of grains and sugarcane.
Ethanol has been chosen as a primary fuel for the HCCI engine, because of its high octane number (over 100).
Table.1: Properties of Ethanol Chemical Formula C2H5OH Self Ignition Temperature 420°C Octane number 107 Cetane number 8 Gross Heating Value 29700 kJ/kg Flash point 13°C Latent Heat of Vaporization 923 kJ/kg Stoichiometric air fuel ratio 9 Boiling Point 78°C Density 790 kg/m3 Experimental Setup and Procedure The used test engine was a single cylinder DI diesel engine of 4.4 kW with a rated speed of 1500 rpm.
Online since: February 2019
Authors: Almaz B. Kuandykov, Alexey V. Bogomolov, A. Zhakupov
A number of methods of thermocycling are known, but the choice of TCM modes is still conducted empirically.
The number of quenching cycles was determined empirically, when the maximum strength properties were reached.
Harries, High-chromium ferritic and martensitic steels for nuclear applications, ASTM Stock Number MONO3, 2001
Fernandez, Grain boundary microchemistry and metallurgical characterization of Eurofer’97 after simulated service conditions, Journal of Nuclear Materials. 329-333 (2004) 274-277
Online since: January 2017
Authors: Chan Gan Wang, Xu Fang Wang, Xiao Bo Yan
Wipe each specimen to a surface-dry condition, and remove any loose sand grains or incrustations from the faces that will be in contact with the bearing blocks of the testing machine.
Table 2 Effect of pot brushing ways on the strength results Number Pot brushing 3d strength 28d strength Flexural Compressive Flexural Compressive A1 Yes 6.6 33.3 9.2 59.7 A2 No 6.6 33.7 9.3 61.0 B1 Yes 5.8 29.6 8.4 56.4 B2 No 6.2 31.4 8.8 57.9 Effect of demolding ways.
Table 3 Effect of demolding ways on the strength results Number Ejector 3d strength 28d strength Flexural Compressive Flexural Compressive C1 Yes 6.2 31.8 8.8 57.8 C2 No 6.1 31.4 8.8 57.1 D1 Yes 6.2 30.0 8.9 52.2 D2 No 6.0 27.4 8.7 48.8 Effect of cement compression jig.
Table 4 Effect of jolting apparatus on the strength results Number Jolting apparatus 3d strength 28d strength Flexural Compressive Flexural Compressive F1 Jolting table A 6.2 31.8 8.8 57.8 F2 Jolting table B 6.1 31.7 8.6 57.6 F3 Jolting table C 6.2 30.4 8.8 54.9 F4 Jolting table D 6.2 29.5 8.8 51.7 F5 Vibration table 6.1 31.2 8.8 57.2 When comparing results between jolting table A and C, it also can be seen that compared with jolting table A, 3d compressive strength results of jolting table C decrease 4.4% and 28d compressive strength of it reduce by 5.0%.
Online since: September 2013
Authors: Ming Hui Huang, Mo Li, Wan Li
The  basement is consist of Yanshanian fine-grained granite and underlying bedrock is Ordovician schist.
Because of uncertain boundary of stone tongue, adoption of drilling holes machine exploration will bring numbers of superficia drilling holes, increased difficulties of construction and slow engineering progress.
Boundary Definition.Numbers of first-hand datum of stone tongue shape were obtained in construction process(Fig.1), but drain board of  construction boundary can’t be ascertained.
Fig. 3 Graphic well log of GJ9 and GJ10 drill Study on Strengthening Technology Strengthening Technology of the Boundary of Stone Tongue.Pile pipe often meet stones and hardpan can’t be pierced when vibrating plate inserting machine is used because of loose construct mountain stone near the stone tongue from 8 m to 12m. vibrating plate inserting machine was used and 75-80% drain board can be successful inserted(Compared with the design number) when shallow hole drill was used.There is thin silt in the region and its thickness is from 5.0 to 8.0m Strengthening Technology of Silt at the bBottom of Stone Tongue.Superficia drilling holes had been used to pierce stone tongue and then drain board were inserted in view of the wedge silt.
Online since: June 2011
Authors: Hisaki Watari, Nobuyuki Kamei, Youichi Kawamura, T. Hatano
First, odd number outer dies and inner dies press the trial pipe and return to the starting position.
Secondly the even number outer dies and inner dies press the trial pipe and all dies return the starting position.
The number of element is 110,000, the speed of the dies’ feed is 10mm/s, and processes are divided by 40.
Xu, Microstructure texture and grain boundaries character distribution evolution of ferritic stainless steel during rolling process, Journal of Materials Processing Technology, Volume 209 (2009), 2627-2631 [14] Z.
Online since: September 2012
Authors: Fei Guo, Mei Zhao, Xiu Ying Fan, Jin He Bao, Wen Bang Sun
M is the total number of pixel including current pixel in template.
However, we adopt mean value of middle two points as the medium when the number of pixel is even number.
(a) original correlation fringes (b) correlation fringes after being filtered Fig.5 The result of Butterworth lowpass filtering to speckle correlation fringes 2.homomorphic filter According to the formula (4), we know relationship between speckle grain noise and fringes is multiplicative.
Online since: September 2011
Authors: Chao Jun Chen, Yin Bo Zhou, Yao Zhi Huang
In fact, the extent to which the number of rural residents decreases can usually be forecast by the urbanization process, however, it is more complicated to determine the quantity and the layout of rural settlements than resettlement of rural residents.
Urbanization is a process with more and more rural population flowing into cities and towns, an increasing number of cities and towns and a broaden scope of cities and towns.
Take aspects of circulation of material and energy, rational use of resources and protection of ecological environment as the starting point [6], following demands to improve the quality of farmland and the production-capacity of grain, the radius of farming and the layout of rural settlements should be given full consideration.
It is a complex factor integration As such, we need to break it down to the following three steps:1. to research the quantity and the change of distribution method, based on the change of lifestyle of rural residents in the process of urbanization and the inevitable trend of the reduction of the number of rural residents ;2. to analyze the effects of rural residential cluster from the perspective of urban-rural integration, and then obtain the relevant factor integration which influences the way rural residential settlements form; 3. to compare and contrast factors obtained from the first and second items with development goals, including the maintenance and nurturing of the agricultural industry, the integration of spatial resources, the cultural heritage from the farming tradition, the protection of local geographical landscape and so on.
Online since: July 2019
Authors: Jae Hoon Kim, Dong Hyun Yoon, In Kang Heo
In particular, the directional solidification process by the Bridgman method minimizes the vertical grain boundary with respect to the centrifugal direction of the blade, thereby rapidly developing high-temperature creep characteristics.
The Coffin– Manson equation is: ∆εa2=∆εae2+∆εap2=σ'fE(2Nf)b+ε'f(2Nf)c 1 where ∆εa/2 is the strain amplitude, Nf is the number of cycles to failure, σ'f is the fatigue strength coefficient, E is Young’s modulus, b is the fatigue strength exponent, ε'f is the fatigue ductility coefficient, and c is the fatigue ductility exponent.
The prediction equation is Number of data falling within [1s≤PVEV≤sTotal Number of data 3 In general, if the prediction data is within the scattering range of s = 2~3, it can be judged that the predicted life is valid [6].
Online since: July 2016
Authors: Annisa Dian Kumalasari, Suhartono Tjondronegoro
Moreover, the ability to massively deploy a large number of sensor for bridge monitoring affords a high sensing quality, thus a fine grain of monitoring.
Classification Sensor for Pasupati Bridge Type of Sensor Number Accelerometer Sensor 42 Humidity and Temperature Sensor 42 Light-to-Digital Sensor 42 Network Topology.
The communication range of Imote2 approximately 100-m using frequency operation 2.4 GHz, and the number of sensor nodes in network is 42.
Online since: September 2007
Authors: Shinichi Nishida, Nobusuke Hattori, Y. Yano, J. Ding
t=0.2 210 É"15 C1 80 80 10 10 30 É"12 É"10 R10 R10 Éœ 100 150 200 250 300 350 400 1.E+04 1.E+05 1.E+06 1.E+07 1.E+08 Number of cycles to failure, Nf a 100 200 300 400 500 600 700 800 1.E+04 1.E+05 1.E+06 1.E+07 1.E+08 Number of cycles to failure, Nf Fig.2 S-N curve.
Namely, the fatigue cracks of notched specimens initiate at a little smaller cyclic ratio N/Nf (where Nf is the number of cycles to failure) to that of plain specimen, and the ratio of crack propagation life to total life for each notched specimen is larger than that for plain specimen.
The fatigue cracks of all specimens initiate at grain boundary or its neighborhood.
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