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Online since: May 2011
Authors: Mohammad Sholichin, Faridah Othman, S.M Shirazi, Shatirah Akib, Donny Harisuseno, Dian Sisinggih
Model was calibrated from 1991 to 2003 were accurate when compared with the measured data R2 = 0,725 (Figure 2.3) and resulting of statistical goodness-of-fit was evaluated with the Nash-Sutcliffe coefficient NS = 0,38 (Figure. 2) Figure 2.
Pollutant loads from rice field/agriculture activities can be minimized by the reduction of fertilizer use in rice field and change of fertilizer type from an inorganic (from fertilizer factory) to organic type (natural type).
The Brantas River, East Java, Indonesia: Some Preliminary Data.
Online since: November 2012
Authors: Ce Yang, Islem Benhegouga
Rotating stall refers to a dynamic instability that occurs when a non-axisymmetric flow pattern develops in the blade passages of a compressor stage and forces a drastic reduction in the performance of the compressor.
The experimental data for the NASA rotor 37 in the current work have been published in a report by the ASME turbo-machinery committee [12].
[12] ASME Turbomachinery Committee, CFD Code Assessment in Turbomachinery – Data Report, (1994)
Online since: June 2010
Authors: Oksana Ganpantsurova, Aleksandr Gubarev
At the same time for predicting operational efficiency of the windmill the data are necessary for some years ahead.
The hydrosystem should transfer a stream of power at several wind turbine operating modes, in other words, provide stable operation and minimal energy losses, as for minimal so the maximal value of power (thus, according to the data gained during structural optimization, values of power can change tenfold).
Functional graph of flexible operation of the system: 1 - connection of the generator with rated power N1; 2 - connection of the generator with rated power N2; 3, 5, 7 - turning on of memory elements which fix the raise of pressure; 4, 6, 8 - turning on of memory elements which fix the pressure reduction; 9 - connection of the additional pump Q, cm 3/s V, m/sec V, m/s р, MPa Fig. 4.
Online since: May 2006
Authors: Rejane A. Nogueira, Francisco Ambrozio Filho, João Franklin Liberati, Waldemar Alfredo Monteiro, Iara M. Esposito, Oscar O. Araujo Filho
Table 2 presents the density and viscosity data of the binder components.
Table 1 - Particle size distribution of AISI T15 powder, manufacturer data.
It is possible to observe a pseudo-plastic behavior, i.e, a reduction of viscosity with the shear rate, what it is favorable for the injection process [1, 5], and this behavior remained for a long period.
Online since: January 2015
Authors: Xin Zhang, Xiao Shuai Zhang, Hong Wei Chen
Table 1 Variable Symbols and its Physics Meaning symbol Physical meaning symbol Physical meaning m Vehicle mass[kg] i0 /η0 Main reduction ratio/efficiency f Rolling resistance coefficient ig/ηg Gearbox ratio / efficiency i Road slope Ie / IMG1 / IMG2 Moments of inertia for engine/motor1/motor2 Cd Air resistance coefficient Te / TMG1 / TMG2 Torque of engine/ motor 1/motor 2 A Windward area[ m2] If Equivalent moment of inertia r Tire rolling radius [ m] Td Integrated drive torque αmax Grade Ability Computational formulas of drive torque and moment of inertia at different driving mode are summarized in Table 2.
Based on the data of engine and motor, external characteristic curves at different drive modes are drawn in fig. 2. 1.
Speed (km/h) Max.Gradeability (%) Acceleration Time 0~20km/h (s) Acceleration Time 0~50km/h (s) EV1 79.3119 12.1966 5.9116 34.5494 EV2 116.8865 26.6085 2.9437 14.0262 Engine 86.0573 19.2535 4.3579 29.783 Hybird 99.6788 34.3812 3.8163 15.7022 Full Driving 99.6788 51.9783 2.3136 10.0845 The data in Table 3 indicate that, maximum speed of vehicle lies in EV mode 2, because the maximum speed of motor is greater than the maximum speed of engine.
Online since: October 2013
Authors: Sung Wook Won, Yeoung Sang Yun, In Seob Kwak, Jang Sik Shin
The experimental isotherm data were plotted using the Langmuir model, which is shown in Fig. 1(A).
The sorbed Ru ions can be recovered as a highly concentrated solution by elution (data not shown).
This process is possibly simple and cost-effective compared to the conventional hydrometallurgical process, which involves a multi step process such as leaching, extraction, reduction and precipitation.
Online since: October 2008
Authors: Marivalda Pereira, Viviane Gomide, Natália Ocarino, Rogéria Serakides, Maria de Fatima Leite
After 72 hours of incubation the viability of the osteoblasts was evaluated through the MTT assay, based on the reduction of tetrazolium salt to formazan crystals by dehydrogenase present in living cells mitochondria.We left 200 µl of culture medium in each well and added 60 µl of stock solution of MTT (5 mg/ml).
Data was analyzed Graph Pad Prism signed rank test.The results expressed as means ± SD of triplicate wells was repeated three times.Total 9 wells were assayed in each experimental group.
Data was analysed GraphPad Prism signed rank test.
Online since: May 2004
Authors: Chan Mook Kim, Jun Suh Yu, J.Y. Kim, S.B. Yoon
Experimental Colloidal gold particles were prepared via the citrate reduction method as described previously [15].
The corresponding pore size distribution data calculated from the adsorption branches of nitrogen isotherms by Barrett-Joyner-Halenda method showed narrow pore size distributions centered at 2.9 nm, 4.3 nm, and 2.6 nm, respectively.
particle size a Sample name core diameter [nm] Shell thickness [nm] BET surface Area [m2/g] total pore volume [ml/g] pore size b [nm] Au@SCMS silica 200 30 404 0.39 2.9 Au@carbon capsule 195 24 1166 1.47 4.3 Au@silica capsule 190 24 1134 1.07 2.6 aThe particle size was determined from the electron microscopy data.
Online since: July 2012
Authors: Shao Guo Wen, Jin Shen Chen, Hong Mei Zhi, Wen Xi Cheng
Through the control of acidity, using sulfuric acid to improve Cr2O72- oxidation capacity, relatively improve the ferrous ammonium sulfate reduction ability.
Quality control chart is a quality management approach 1924 by the United States W.A.Shewhart was first used in the production.He pointed out that every method has its variability,are affected by time and space effects, even under ideal conditions to obtain a set of data also have random error, but when a certain results beyond the random error of the permitted range, by using the method of mathematical statistics [9], can determine if this result is abnormal, not credible.
In the elimination of the error of the system under the premise, if using a new method for testing, analysis results in quality control chart control state, data is accurate and reliable, so it is concluded that the new method is reliable.
Online since: February 2014
Authors: Xin Yuan Zhou, Pei Jing Shi, Wen Yu Wang, Bo Hai Liu
The statistical data shows that car ownership in China reached 49.57 million in 2008 (excluding motor at low speed), the machine tools were over 7000 thousand, and 14 kinds of main types of engineering machinery reached 2.9 million [5].
Implementation of remanufacturing will bring us cost reduction, energy conservation, material saving and environmental protection.
Remanufacturing technology standard system Series of common technical standard in cross-industry Concept layer Technical terms of remanufacturing standards Definition standards of remanufacturing technology Essential data standards of remanufacturing technology Solution layer Guidelines standards of remanufacturing Technical method standards of remanufacturing Evaluation standards of remanufacturing Target layer General technical requirements standards of remanufacturing Series of common technology standards in key industries Machinery industry Automotive industry Other industries Remanufacturing Technology Guide Remanufacturing Technology Guide Remanufacturing Technology Guide Technical require- ments standard Product management standards Techni- cal evalua- tion standards Technical require- ments standard Product management standards Technical evaluation standards … … … Technical standards of key products Engines, machine tools, generator, gearbox, excavators
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