Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: March 2013
Authors: Yuan Hu Zhi, Pi Qiang Tan, Di Ming Lou, Ze Chao Kan, Qian Feng
After using blends of biodiesel/diesel, particulate mass emission factors displayed different reduction percentages.
The sizer can measure a complete size distribution spectrum with 0.1 s, and sync output the data of the particle number and size distribution of 32 particle channels. 1.2 Test fuel Table 1 Properties of the country Ⅳ diesel and biodiesel fuels Property Unit D100 BD5 BD10 BD20 BD50 BD100 Density[20℃] kg/m3 822.0 826.6 829.3 834.7 849.2 876.3 Kinematic viscosity[40℃] mm2/s 3.30 3.32 3.39 3.41 3.73 4.40 Cetane number 51.2 51.7 52.1 53.0 55.8 60.4 Low heat value kJ/kg 38040 38032 38020 38008 37960 37880 Mass fraction of carbon [m/m]/% 85.50 85.04 84.58 83.65 80.88 76.26 Mass fraction of oxygen [m/m]/% 0 0.54 1.08 2.16 5.40 10.80 Sulfur content mg/kg 15 19 23 30 52 87 Six kinds of fuels have been used in the test, which are country IV diesel, pure biodiesel and different blends of country Ⅳ diesel-biodiesel, the blend ratios of which are 5%,10%,20%,50%.
Table 2 The average speed and acceleration of the passenger car on different road type The type of road average speed(km/h) average acceleration (m/s2) average speed reduction (m/s2) Urban main road 19.7 0.59 -0.68 Urban secondary road 24.3 0.49 -0.56 Urban highway 41.1 0.37 -0.38 Rural main road 27.7 0.49 -0.56 Rural secondary road 29.4 0.46 -0.57 Rural highway 72 0.36 -0.36 Full path 31.6 0.48 -0.53 The average acceleration on the urban main road is the highest.
ACKNOWLEDGEMENT: Scientific and technological project of Shanghai Science and Technology Commission in 2010 (10231201900) Foundation Item: Scientific and technological project of Shanghai Science and Technology Commission in 2010 (10231201900) Author’s Introduction: Diming Lou(1963- ), male, Ph.D., professor, mainly engaged in alternative fuels and performance optimization of engines E-mail: loudiming@tongji.edu.cn References [1] Diesel and gasoline engine exhausts and some nitroarenes : summary of data reported and evaluation[R].
Online since: January 2015
Authors: Przemysław Osocha, Bohdan Węglowski
The creep test data were recalculated for operational temperature using Larson-Miller parameter.
Experimental creep data were approximated by several equations.
Interpolated values are congruent with experimental data.
For those points computational data were collected.
The data confirm the performance of power calculations and analysis performed.
Online since: February 2014
Authors: Ida Sriyanti, Lina Agustina, Iftita Selviana, Leni Marlina
XRD data showed that silica nanoparticles, PVAc, and PVAc + silica nanoparticles were in amorphous phase.
The compressive strength data showed that our composite is stronger than the composite made by Masturi.
This approach could have two simultaneous advantages: reduction of the deforestation rate and a solution to environmental problem caused by POEFB.
Online since: April 2014
Authors: Peter Groche, Matthias Brenneis, Mesut Ibis, Alexander Duschka
In addition to their mechanical properties they are also able to sense, to actuate or to transmit energy or data.
Rotary swaging tools, with a cavity in the region where later on the functional material will be inserted, provide a local cross section reduction.
Diameter reduction is performed within 0.6 s, followed by 0.5 s lasting calibration process.
In case of Model III it is depicted that throughout the time when diameter reduction takes place the contact area envelops ring’s radius.
Through further infeed motion and subsequent strokes the final diameter reduction is reached, while the ring component is deformed mainly elastically.
Online since: January 2005
Authors: Yong Ik Byun, Hwihyun Kim
Data and Data Process All the observations were carried out at Xinglong station of the Beijing Astronomical Observatory as part of the BATC survey project as elaborated in by Zhou et al. [6] and Fan et al. [7].
The observation data are grouped into bins of the roughly same phase.
We cannot decide whether the eclipse detected from our data is primary or secondary minimum.
We obtained its period as 1.615531 day in spite of the lack of data.
Conclusion and Summary We present the result of our variable star survey based on the BATC image data of M67.
Online since: November 2011
Authors: Wen Tang Xia, Xue Jiao Zhou, Jian Guo Yin
Thermodynamics data and calculation The thermodynamics data have some differences due to different data book.
So, in order to ensure the consistency of datum, all thermodynamics datum are from the same data book [22].
The thermodynamics data for calculation are listed in Table1.
Conclusions Through thermodynamics data and calculation, the lg[P]T-pH diagram of hydroxyapatite decomposition in the system of P-Ca-H2O is plotted at 298K and 373K.
Yang: High-temperature thermodynamic data sheet for aqueous solution (Metallurgical Industry Press, Beijing 1980).
Online since: March 2015
Authors: Xiu Mei Tang, Yan Min Ren, Yu Liu, Yu Chun Pan
The following results are gotten:(1) the construction of the expressway hadadramatic influence to the land use types along and the agricultural structure change obviously; (2) The total value is 20.77×108Yuan in 1995, and increased to 20.96×108 Yuan in 2004, then decreased to20.78×108 Yuan in 2009; (3)The reduction of cultivated land and the increase of construction land were the most important reason for the loss of the ecosystem services value, but because of the increase of garden plot, the total ecosystem services value was stable and increased a littlefrom 1995 to 2009.
Study area and data source Jingcheng expressway is a expressway which connects Beijing to Chengde in Hebei province.
The TM in 1995, 2004 and 2009 image covering Beijing section of Jingcheng expressway is selected to been the data source, then the data processing data is following the next step, the first step is the band combination, projection transformation, image mosaic and resolution of remote sensing image data fusion operation, then, based on the checking and correcting of vector data and attribute data of corresponding relations, the base map production is finished by the source of data pretreatment generation research object 10km buffer area and cutting the scope of the study.
Online since: November 2011
Authors: Wan Chun Chen, Xing Liang Yin, Xiao Ming Liu, Xiao Lan Xing
For velocity estimation, a low order polynomial is fitted by the least squares method through a number of data pairs.
Let m be the number of data pairs, n the order of the polynomial, p0…n the polynomial coefficients to be estimated.
If n=m-1, an exact fit is made through all the data pairs, for the least squares method nThat is because there are not enough data pairs to be used to fit the polynomial.
LSF1/4 starts to work when 4 data pairs have been sampled while LSF1/8 and LSF2/8 8 data pairs.
Online since: July 2014
Authors: Gong Chen, Wen Chong Xie, Yong Liang Wang
With the knowledge given by a tracking filter in data processing, the KA-C-STAM improves the performance of angle estimation.
A fact of significant is that the distribution of current angle of the target is non-uniform if one consider about data of all of the CPIs before.
In data processing, the tracking filter gives a predicted angle on which the probability of the appearance of real target reaches maximum.
One can notice that the angle of target is estimated based on information from both signal and data processing.
A new feedback structure exists beyond the signal and data processing domain to the feature domain.
Online since: January 2025
Authors: Harsh Tiwari, Farzan Shahid, Mayank Panwar, Vijay Gautam
Experimental and Computational Methods to Validate Material Models To ensure the reliability of the simulations, the project integrates experimental data from crash tests with computational predictions.
The hybrid approach of combining real-world crash data with detailed computational models enables a more accurate validation of the material characteristics and the effectiveness of the vehicle designs.
Libin Duan et al. [5] introduced a new FLB-inner structure using tailor-rolled blanks for vehicle weight reduction without compromising crashworthiness.
Results showed that wrapped tubes had superior performance in energy absorption and peak force reduction compared to bare tubes, highlighting the benefits of hybrid structures.
These boundary conditions are essential for providing reliable data on how the vehicle's structure and newly integrated materials such as Boron steel and Dual-Phase(DP-590) steel perform under extreme stress, thereby offering insights into potential enhancements in vehicle safety and occupant protection in side impacts.
Showing 15861 to 15870 of 40357 items