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Online since: July 2014
Authors: Apurba Layek
Observed data were utilized to obtain various performance parameters such as brake power, brake specific fuel consumption, brake thermal efficiency at various loads and throttle settings.
The collected test data are used to calculate brake power, brake specific fuel consumption and brake thermal efficiency.
Observed data in this table indicate that specified rated output of this diesel engine lies between best power & best economy zone at wide throttle opening (for the maximum duration of injection set in existing injection timing of the engine).
Minimum bsfc and maximum output for both the fuels reduces with the reduction in throttle (% reduction in duration of injection).
Percentage reduction in maximum output with the use of blend from their values with diesel reduces with reduction of throttle (duration of fuel injection).
Online since: January 2016
Authors: Herbert Danninger, Christian Gierl-Mayer
The generated analytical data can be related to the mechanical properties of the sintered steels if the size of the specimen is large enough.
For both reduction processes, the main product is CO as indicated by mass 28.
In hydrogen the reduction mechanism is slightly different (Fig. 1b).
The reduction of the surface oxides occurs at fairly low temperatures (Fig. 4b).
The reduction processes of surface and internal oxides can be distinguished.
Online since: September 2018
Authors: Ahmed S. Khalil, Sergey V. Starovoytov, Nikolai S. Serpokrylov
This simulation system results in a reduction of cost because several experiments on all possible combinations of input data are no longer needed [11,12].
The available data was divided into 70% for the implementation of the training process and the remaining 30% was used as a test data for evaluating the trained model.
The values of RMSE are 0.4745 and 0.6847 for training and testing data respectively.
Moreover, the outputs of test data confirm the strength of this model in predicting the results.
Where the root mean square error (RMSE) values for both training data and test data were 0.474 and 0.684 respectively.
Online since: November 2016
Authors: Zhi Hong Jia, Zhi Qing Zhang, Qing Liu, Zhang Wen, Ying Ying Liu, Pi Zhi Zhao
After intermediate annealing, the Cube and Cube+ND20 texture replace the deformation texture and rise with the rolling reduction.
Statistical data show that the volume fraction of Cube and Cube+ND20 components are 15.95% and 12.34% in the AIA-50 sample, and 11.95% and 13.59% in the AIA-60 sample, respectively.
By comparsing the volume fractions of the texture components in Fig 8, it could conclude that with increasing the rollling reduction, the dominated texture changed from Cube and Cube+ND20 to S, Copper and Brass, and when the cold-rolled reduction reaches 85%, the deformation texture strongly increased.
In addition, the recrystallized grain size decreases with the increase of rolling reduction.
PSN and nucleation at shear bands dominate the competition of recrystallization mechanism with the increaseof rolling reduction.
Online since: September 2008
Authors: Taghi Tawakoli, Bahman Azarhoushang, Mohammad Rabiey
Onikura et al. [2, 3] found that the use of ultrasonic vibration reduces the friction between chip and rake face, resulting thinner chips which lead to the reduction of cutting forces.
Tawakoli et al [8,9] demonstrated that in ultrasonic assisted dressing of CBN grinding wheels, considerable reduction in grinding forces and dresser wear is achievable.
Fig. 2 Ground surface vc=60 m/s vft=1000 mm/min ae=200 µm In order to achieve reliable data each test was repeated 4 times.
In all the figures, lines were formed by calculating the least-squares fit through the data points for a second-order polynomial equation.
• Comparative experiments of the grinding forces demonstrated up to 40% reduction in normal grinding force for the workpieces machined with superimposed ultrasonic vibration.
Online since: September 2013
Authors: Hua Bing Ouyang
STEP-Tools company indicates that: After STEP-NC was used, there will be 35% reduction in time for job shop to set up machining job, 75% reduction in time for OEM to prepare data for job shop and 50% reduction in machining time[2].
The objects in this case are manufacturing features and their associated process data.
The STEP-NC data consists of instances of entities.
Fig.1 shows the STEP-NC data model[5].
A Framework for an Intelligent CNC and Data Model[J].
Online since: June 2010
Authors: Xin Xi Zhang, Ming Ming Wang, Shou Qi Bing, Yu Wen Zhou
The planning practice has a significant effect on runoff reduction.
The effect of runoff reduction for rainwater utilization measures is analysis.
Fig. 1 Overview of processes incorporated in the planning runoff estimation Mountain areas Overland flow (inflow hydrograph) Flow routing through drainage system Initial loss-constant continuing loss rate model Rainfall Overland flow GIS data Instantaneous unit hydrograph (IUH) SWMM Urban areas Initial loss-constant continuing loss rate model Rainfall GIS data Instantaneous unit hydrograph (IUH) Case Study Area [6].
According to this basis data, Futian River watershed stormwater control and utilization planning is carried out.
Effect of Runoff Reduction.
Online since: February 2014
Authors: Seyed Ali Hashemian, Behnam Moetakef Imani
Dimension reduction.
In order to overcome this difficulty, Rahman and Xu [12] proposed the dimension reduction (DR) method which converts a multi-dimensional integral to multiple one-dimensional integrals: (2) Youn et al. [13] developed an enhancement of the DR method which is referred to as the enhanced dimension reduction (EDR) method.
The accuracy of the response approximation increases as the number of data points.
However, dealing with a large number of data points it is not economically reasonable.
Geometric covariance matrix Principal variance matrix Test pieces A Test pieces B In order to investigate the efficiency of the presented methodology, a set of 1000 assemblies were also simulated and the results are compared and evaluated with experimental data as represented in Table 3.
Online since: February 2026
Authors: Kampanart Theinnoi, Warirat Temwutthikun, Boonlue Sawatmongkon, Thanawat Thaisruang, Aunyamanee Sawatdimongkon, Thawatchai Wongchang, Punya Promhuad
These regions were attributed to the reduction of Ag₂O to Ag⁰ and the liberation of lattice oxygen from ZnO, respectively.
Data was collected between 80 and 700 °C.
This analysis elucidates the reduction behaviour of Ag species supported on ZnO in interaction with H₂ as the temperature escalates from 100 to 700 °C.
Elevated temperatures may induce the reduction of ZnO as ZnO + H₂ → Zn⁰ + H₂O, further suggesting that Ag promotes the mobility of O₂ within the ZnO lattice [23].
It was noted that the trend of DPM mass reduction rates exhibited uniformity over the five-cycle evaluations.
Online since: October 2010
Authors: Chung Ming Ho, Wei Tsung Tsai
Result and discussion Compressive strength of recycled concrete The developments of compressive strength of recycled concrete specimens with various percentages of RBFA are shown in Fig.1 each data represents the average of test results of three cylinders.
The reduction of UPV is increased with an increase in RBFA content.
A positive relationship between strength and UPV is observed and quadratic regression curve was used to correlate the experiment data.
A positive relationship between strength and UPV is observed and a quadratic regression curve was used to correlate the experiment data.
Similarly, a positive relationship between residual strength and residual UPV is clearly observed and a quadratic regression curve was to correlate the experiment data.
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