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Online since: May 2012
Authors: Jau Huai Lu, Chang Tai Wu, Liang Chun Lu
The exhaust gas of the engine was cooled and bypassed to the HORIBA 441GE gas analyzer to measure the amount of CO, HC and CO2 and these data were recorded through the data acquisition system.
Usually, reduction in CO2 would accompany the improvement if fuel economy.
However, the fuel economy was not improved at all because the reduction in CO2 is achieved with the price of increase in CO.
Online since: April 2013
Authors: Wu Li, Ya Ping Dong, Shu Yang Xiao, Qing Fen Meng, Bing Li
Weather data including incident solar radiation and air temperature were determined by weather station.
The temperature and weather data were all collected and recorded by TRM-ZS2 digital weather station at an interval of 30 min during the experiment.
Although the LCZ temperature showed a large reduction compared to the summer days, the temperature difference between the LCZ and air temperature did not change greatly (28.6 oC in winter, 30.3 oC in summer), this due to the fine preservation property of NCZ layer, as well as the appropriate thickness of the ice layer.
Although the LCZ temperature showed a large reduction compared to the summer days, the temperature difference between the LCZ and air temperature did not change greatly.
Online since: September 2013
Authors: Dao Fang Wang, Nan Tong Zhang, Xue Qing Wang, Yan Chen
Analysis on reinforcement effect of composite foundation Location Calculation settlement of natural foundation/mm Measured settlements of composite foundation/mm Settlement reduction Reinforcement area compression Substratum compression Total compression Abutment 180.8 53.5 234.3 88 62% Center section 194.9 100.7 295.6 95 68% No treatment section 18.8 55.5 74.3 73 2% In order to analyze the effects of the composite foundation on soft soil section, the settlement of natural foundation along the center line with embankment load is usually calculated by applying stratified summation method and compared with the monitoring data of settlement filled with soil.
The settlements of calculation and monitoring data of natural foundation are shown in the Table 1.The result of numerical simulation of natural foundation settlement is shown in Figure 1.
The settlement reduction can also make the differential settlement of bridge and pavement decreased using the composite foundation and be consistent with the design objective.
Online since: September 2013
Authors: Chiara Colombo, Laura Vergani, Giorgia Gobbi
A bi-linear characteristic of the σ-ε curve is considered, scaling data from the experimental tests [1].
σy [MPa] σUTS [MPa] εy [mm/mm] εUTS [mm/mm] Exp data (150HB) 225 535 0.0011 0.392 160HB 239 568 0.0012 0.369 180HB 256 608 0.0013 0.344 200HB 284 676 0.0015 0.310 Results and discussion Two main parameters are taken into account to estimate flange damage: impression of the flange once gasket is removed, and joint sealing performance during the pressurizing step.
Indeed, comparing the applied displacement of numerical analyses to M∙S = 0.8 mm, a reduction in sealing for the highest preload considered value (1 mm) is justified.
Presence of the impression can induce a reduction in sealing properties of the joints.
Online since: January 2011
Authors: Sebastian Stach
The basis for determining the fractal dimension for mathematical objects is power law describing the relationship between the number of fragments and reduction ratio, regardless of the reduction scale examined.
Actual world data show only local self-similarity in certain ranges of scales.
For the idea of fractal analysis of actual data to be useful, one ought to carry out tests of scale properties.
Online since: March 2015
Authors: Fan Long Kong, Wen Hao Zhang, Yue Li, Min Xi, Yang Liu
The method of data analysis The data obtained were analyzed by Excel software and then drew diagrams.
With the increase of temperature and the reduction of rainfall, the content of soil organic carbon decreases.
The possible reason was that with the increase of soil depth, the temperature of soil decreased and therefore led to the reduction of the activity of microorganisms.
Online since: November 2011
Authors: Mei Yang, Ben Ou, Li Jun Yan
Introduction In recent years, SCR (selective catalytical reduction) is the key technology of DeNOX[1] .
Fig3.b shows that after the data processing, the content of V2O5 is 1.98wt.
The main phases of 2.1% V2O5-8.2%WO3/TiO2 are anatase-TiO2 , WO3 and Mg2Al4Si5O18.The distribution of Vanadium monomers is in single layer, the shape of particles is acicular .The surface morphology creates conditions to selective catalytic reduction on NO .
Online since: November 2007
Authors: Y. Choi
The average particle size was determined from the X-ray results (Rigoku, Japan) incorporating with the data obtained by the Brunauer, Emmett and Teller method (BET).
One of the interesting points of the combustion reaction in which the chemical reaction of (NiO)x + (ZnO)1-x + 0.5 Fe2O3 + Fe = NixZn1-xFe2O4 occurs, is that the oxidation and reduction reactions influence the final non-stoichiometry of the ferrite and its magnetic properties.
The reduction of the intensity of α-Fe2O3 is attributed to the formation of well-defined cubic Ni-Zn ferrite spinel from the mixture of oxides of nickel, zinc and iron by a combustion reaction.
Online since: January 2015
Authors: A.G. Karengin, A.A. Karengin, I.Yu. Novoselov, Nikolay V. Tundeshev
The reduction of the plasma flow capacity and the input area of the reactor impeller leads to a reduction of the plasma module coefficient of efficiency down to 45.7%.
Table 1 Indicators of extractants burning Name Flash point, [°С] Ignition point, [°С] Self-ignition point, [°С] Tributylphosphate 144 175 345 Hexachlorobutadiene – – 580 The comparison of the findings (Fig. 3) and the data in Table 1 proves that using the given modes, the HFT plasmatron can provide for the inflammation of dispersed burning wastes and the reactor ignition which result in the optimal operational mode.
Online since: October 2006
Authors: Hyouk Chon Kwon, Heung Bok Lee, Sung Chul Lim, Kyung Hoon Kim
Some advantages of the semi-solid state processing over the conventional cast include a reduction in the consumption of energy and the cycle time for processing, an extrusion of the die life, elimination of inclusions, improved yield of fine-grained and uniform structures, a reduction in micro- and macro-segregation, shrinkage, micro-porosity and cracking, and enhanced mechanical properties of ingot products [2].
The size of primary solid particle was found to be decreased with increasing cooling rate agreed well with the data of author's previous work.
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