Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: October 2011
Authors: B. Rajendra Prasath, Porai P. Tamil, Mohd. F. Shabir, P. K. Devan, S. Vigneshvaran
Dynamometer Controller 4.Piezo Electric Transducer
5.TDC Position Sensor 6.Charge Amplifier
7.Data Acquisition System 8.Flow meter
9.Fuel Tank 10.Exhaust Gas Analyzer
11.Fuel Injector 12.Intake Manifold
13.Exhaust Manifold
Fig. 1 Experimental setup of the test engine
Results and Discussions
The variation of brake thermal efficiency (BTE) with respect to brake power for different fuels were considered for the analysis has shown in Figure 2.
This is due to the reduction in heat loss to the cylinder walls.
NOx reduction strategies for DI Diesel engines.
Catalytic reduction of NOx in Diesel exhaust.
This is due to the reduction in heat loss to the cylinder walls.
NOx reduction strategies for DI Diesel engines.
Catalytic reduction of NOx in Diesel exhaust.
Online since: June 2013
Authors: Toru Fujii, Shinya Kinoshita, Kazuya Okubo
The sampling frequency for the data acquisition system was 5kHz.
Consequently, the resistance force reduction ratio, shortly relative ratio which is the ratio between two resistance forces decreases at high normal forces.
The relative ratio curve with respect to the normal force is downward convex, but more than 15% reduction in driving resistance force is obtained at 41.75N of the normal force, which means we may expect 15% power saving when this belt is used for long distance belt conveyers.
Consequently, the resistance force reduction ratio, shortly relative ratio which is the ratio between two resistance forces constants at high roller speed.This result shows that the resistance force is estimated by the proposed method without depending on the relative velocity between roller and belt.
Consequently, the resistance force reduction ratio, shortly relative ratio which is the ratio between two resistance forces decreases at high normal forces.
The relative ratio curve with respect to the normal force is downward convex, but more than 15% reduction in driving resistance force is obtained at 41.75N of the normal force, which means we may expect 15% power saving when this belt is used for long distance belt conveyers.
Consequently, the resistance force reduction ratio, shortly relative ratio which is the ratio between two resistance forces constants at high roller speed.This result shows that the resistance force is estimated by the proposed method without depending on the relative velocity between roller and belt.
Online since: February 2019
Authors: E.A. Ivanaysky, Alexey V. Ishkov, A.A. Ivanaysky
Carbon dioxide fed to the welding zone begins to dissociate according to the following reactions under the influence of high temperature [8]:
СО2 → СО + О2 (1)
СО → С + О2 (2)
Based on the data given in [9], the degree of dissociation of carbon dioxide at different temperatures was calculated.
Figure 5 – Change in Gibbs energy upon reduction of vanadium, niobium and boron oxides by atomic carbon As can be seen from Fig. 5, using a reducing atmosphere to protect the weld metal, the oxidation of the microalloying elements is unlikely, since the formation of oxides will be impeded by the active carbon reduction reactions.
Reduction of carbon in the weld seam of steel 35G2R is associated with its active mixing with the metal of the welding wire, in which its content does not exceed 0,11% [18].
Figure 5 – Change in Gibbs energy upon reduction of vanadium, niobium and boron oxides by atomic carbon As can be seen from Fig. 5, using a reducing atmosphere to protect the weld metal, the oxidation of the microalloying elements is unlikely, since the formation of oxides will be impeded by the active carbon reduction reactions.
Reduction of carbon in the weld seam of steel 35G2R is associated with its active mixing with the metal of the welding wire, in which its content does not exceed 0,11% [18].
Online since: February 2019
Authors: Valeria V. Strokova, L.N. Botsman, Yulia N. Ogurtsova
Further dematerializaiton, reduction of weight and heat conductivity of buildings without lossing their bearing capacity and other performance characteristics are critical to increase the construction efficiency [3-5].
Among others, the dematerialization and reduction of heat conductivity of buildings without lossing their bearing capacity and other operational properties fosters the increase in construction performance [8-10].
To compare and define the influence of the specified factors on concrete consolidation the following transformation formulas taking into account data of Table 1 will be obtained: ; (2) Table 1.
The fundamental difference of AGA-based heat-efficient concretes from concretes based on traditionally applied light aggregates, i.e. the decrease in water absorption by 8-10% with the reduction of average density by 1.8-2 times, is established.
Among others, the dematerialization and reduction of heat conductivity of buildings without lossing their bearing capacity and other operational properties fosters the increase in construction performance [8-10].
To compare and define the influence of the specified factors on concrete consolidation the following transformation formulas taking into account data of Table 1 will be obtained: ; (2) Table 1.
The fundamental difference of AGA-based heat-efficient concretes from concretes based on traditionally applied light aggregates, i.e. the decrease in water absorption by 8-10% with the reduction of average density by 1.8-2 times, is established.
Online since: September 2016
Authors: V.M. Kolokoltsev, A.S. Savinov, A.S. Tuboltseva
At the same time, some of the components of the stress state frequently play more significant role and, consequently, the technological impact on the selective and the most significant component results in the reduction of hot cracking defect with minimal economic costs.
The data obtained were applied in order to analyze the emerging shrinkage process according to the procedure described in detail in the sources [11 – 14].
The change in the size of problem elements with the aim of constructive reduction of the arm causing the bending. 2.
Reduction of casting mould yielding or the local change in the yielding of the sand layer under the problem element. 5.
The data obtained were applied in order to analyze the emerging shrinkage process according to the procedure described in detail in the sources [11 – 14].
The change in the size of problem elements with the aim of constructive reduction of the arm causing the bending. 2.
Reduction of casting mould yielding or the local change in the yielding of the sand layer under the problem element. 5.
Online since: July 2012
Authors: Min Jiang, Li Na Chen, Wei Pang, Xiong Gang Lu, Chong He Li
The first stage rolling was started at 1050°C, then at 1000°C with the rolling reduction ratio 30%, 40% and strain rate 0.5(1/s) in the recrystallized region of austenite.
The second stage rolling was started at 930°C, and finished at temperature 860, 810 and 760°C with the same rolling reduction ratio 20% and strain rate 2(1/s) in the non-recrystallized region of austenite.
Fig.1 shows the inter-pass reduction distribution for the thermal-mechanical simulation test.
Keough :Experimental Design and Data Analyses for Biologists,2002
The second stage rolling was started at 930°C, and finished at temperature 860, 810 and 760°C with the same rolling reduction ratio 20% and strain rate 2(1/s) in the non-recrystallized region of austenite.
Fig.1 shows the inter-pass reduction distribution for the thermal-mechanical simulation test.
Keough :Experimental Design and Data Analyses for Biologists,2002
Online since: October 2016
Authors: Didem Ovalı, Mustafa Lutfi Ovecoglu
MSR mechanism can be seen in the various systems, especially in the metal oxide reduction with reactive metal [10].
Magnesium was used as a strong metallic reduction agent.
International Centre for Diffraction Data (ICDD) powder diffraction files were utilised in the identification of crystalline phases. 3.
Fig.1 (a), also shows that reduction reaction of Eq.1 is possible at room temperature and increasing temperatures decrease the probability of this reaction.
Magnesium was used as a strong metallic reduction agent.
International Centre for Diffraction Data (ICDD) powder diffraction files were utilised in the identification of crystalline phases. 3.
Fig.1 (a), also shows that reduction reaction of Eq.1 is possible at room temperature and increasing temperatures decrease the probability of this reaction.
Online since: August 2008
Authors: S. Trolier-McKinstry, Clive A. Randall, Tanawadee Dechakupt, G. Yang, Ian Reaney
Data were collected with a step size of 0.02o with step
duration of 0.5 s for normal scans and 5 s for slow scans.
Fig. 2c) represents barium titanate with partial Ti ion reduction.
It is noted that the oxygen deficiency or Ti ion reduction (from 4+ to 3+) in barium titanate is characterized by little splitting of the t2g and eg peaks of Ti L2,3 edge and a low intensity of the O K edge.
It is believed that a strongly reducing local environment induced by local CO/CO2 reactions with Ni as catalyst is the cause of BaO/Ba reduction [8].
Fig. 2c) represents barium titanate with partial Ti ion reduction.
It is noted that the oxygen deficiency or Ti ion reduction (from 4+ to 3+) in barium titanate is characterized by little splitting of the t2g and eg peaks of Ti L2,3 edge and a low intensity of the O K edge.
It is believed that a strongly reducing local environment induced by local CO/CO2 reactions with Ni as catalyst is the cause of BaO/Ba reduction [8].
Online since: July 2003
Authors: Zheng Zhong, Pin Tong, Y. Dai
The data used in this analysis are similar to those of [3].
The damping effect on stress reduction is more pronounce at higher taxiing speed. 2.2.3 Effects of damping and taxiing speed Damping ratio is a parameter that strongly affects the magnitude of the dynamic solution.
(3) The reduction in the dynamic responses due to damping is more drastic at higher moving speed.
Reduction in stresses in the pavement vs. damping ratio: (a) σx, σy, (b) σyz and σxz
The damping effect on stress reduction is more pronounce at higher taxiing speed. 2.2.3 Effects of damping and taxiing speed Damping ratio is a parameter that strongly affects the magnitude of the dynamic solution.
(3) The reduction in the dynamic responses due to damping is more drastic at higher moving speed.
Reduction in stresses in the pavement vs. damping ratio: (a) σx, σy, (b) σyz and σxz
Online since: January 2005
Authors: Rui Yang, Yu You Cui, J.Y. Zou
The microhardness data were plotted against distance across the fusion
zone for the as-welded and each PWHTed condition (Fig.6).
In contrast, all PWHTed samples exhibited a reduction in FZ microhardness.
With increasing PWHT temperature, the gradual reduction of FZ hardness could be explained by the coarsening of microstructures and, besides, hardness of HAZ was highest for PWHT at 820o C and this is yet unexplained by SEM microstructures.
Microstructure of HAZ between BM and FZ showed gradual reduction of α2 and O and no new α2 precipitated in HAZ. 2.
In contrast, all PWHTed samples exhibited a reduction in FZ microhardness.
With increasing PWHT temperature, the gradual reduction of FZ hardness could be explained by the coarsening of microstructures and, besides, hardness of HAZ was highest for PWHT at 820o C and this is yet unexplained by SEM microstructures.
Microstructure of HAZ between BM and FZ showed gradual reduction of α2 and O and no new α2 precipitated in HAZ. 2.