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Online since: June 2014
Authors: Hong Zhang, Zhi Yuan Wang, Ya Jun Wang
At present in the high grade highway, first-class highway and second-class highway the common measure to prevent or mitigate the vehicle bump disease is set approach slab in bridge heads, the basic working mechanism is that abutment and embankment at convergence produce larger settlement since the flexible body embankment and led to longitudinal pavement mutation ( Vehicle Bump stairs , etc. ), by setting approach slab to ease the transition , control the change of pavement longitudinal slope within the allowable range , making the stiffness of bridge pavement connection stable and continuous transition , so as to achieve the maximum reduction or elimination of bridgehead vehicle bump.
Meet between functions y and variables x relationship: , can be obtained by regression analysis (1) the Actual observed subsidence regression analysis (2) Settlement regression analysis the projected work after projecting It should be noted that the regression analysis should be supported by a large number of accurate experimental data in the study of this project, in this research project , there are too few experimental data points .
Similarly, regression analysis can be obtained (1) The Actual observed subsidence regression analysis (2) Settlement regression analysis the projected work after projecting As can be seen from Table 1-6,the regression analysis should be supported by a large number of accurate experimental data in the study of this project, in this research project , there are too few experimental data points .
Meet between functions y and variables x relationship: , can be obtained by regression analysis (1) the Actual observed subsidence regression analysis (2) Settlement regression analysis the projected work after projecting It should be noted that the regression analysis should be supported by a large number of accurate experimental data in the study of this project, in this research project , there are too few experimental data points .
Similarly, regression analysis can be obtained (1) The Actual observed subsidence regression analysis (2) Settlement regression analysis the projected work after projecting As can be seen from Table 1-6,the regression analysis should be supported by a large number of accurate experimental data in the study of this project, in this research project , there are too few experimental data points .
Online since: August 2020
Authors: Nabam Teyi, Santosh Kumar Tamang, Rinchin Tashi Tsumkhapa
After generating the data base, the responses were calculated and were compared with the experimental values.
This is due to the fact that increase in cutting velocity reduces the frictional force, resulting in reduction in force.
The effect of input parameters on cutting forces were examined using a set of experimental data.
A comparison was made between the simulated data and experimental data for the cutting forces.
This is due to the fact that increase in cutting velocity reduces the frictional force, resulting in reduction in force.
The effect of input parameters on cutting forces were examined using a set of experimental data.
A comparison was made between the simulated data and experimental data for the cutting forces.
Online since: January 2012
Authors: Ying Jie Cai, Xiao Jun Yang, Dong Sheng Xia, Qing Fu Zeng
The degradation rate of X-3B was obtained from weighted linear least squares analysis of the experimental data, and accorded with the pseudo-first order kinetics equation.
Production of ∙OH radicals from H2O2 utilizing individual catalytic method is limited since ∙OH radicals are scavenged by the excess amount of H2O2 in solution, resulting in reduction of the degradation efficiency.
Production of ∙OH radicals from H2O2 utilizing individual catalytic method is limited since ∙OH radicals are scavenged by the excess amount of H2O2 in solution, resulting in reduction of the degradation efficiency.
Online since: August 2018
Authors: Santina Di Salvo
The starting point is the organization of the biophysical information obtained and represents a challenging process and a first approach through data collection process, based on the type of climate, necessary to be able to apply solutions on inspiration from nature to architectural solutions and to understand the contribution of biomimetic materials to the design culture.
The second factor concerns the current phase of the debate on environmental sustainability characterized by a new awareness: the need, on the one hand, of a radical change in the development model and a drastic reduction in the consumption of environmental resources of industrial companies and the observation, on the other hand, of the slowness and inefficiency of changes in the direction of sustainability, despite the considerable financial, technological and human resources put in place.
Climate bionics - reduction of energy consumptions.
Fig. 6 - Photocatalitic oxidation Fig. 7 - Installation of biodynamic i.active cement panels in the Italian Pavilion in Milan (Expo 2015) Reduction Local pollution.
The possibility to use photocatalytic paints and nano materials within the opaque panels, as in smart and efficient layers for innovative envelope, can allow reducing internal air pollution due the presence of occupants or for the use of toxic glue, formaldehyde or other harmful materials, will actively contribute to the CO2 and/or other chemical pollutants reduction [19] In the Technology Center Leitat in Barcelona (Fig. 8), the bioclimatic façade that acts as a filter between interior and exterior, an interface between the weather conditions outside and inside and the material of building envelope has photocatalytic proprieties, which help reduce, under the solar effects, the pollution and the decomposition of polluting city oxides (NOx).
The second factor concerns the current phase of the debate on environmental sustainability characterized by a new awareness: the need, on the one hand, of a radical change in the development model and a drastic reduction in the consumption of environmental resources of industrial companies and the observation, on the other hand, of the slowness and inefficiency of changes in the direction of sustainability, despite the considerable financial, technological and human resources put in place.
Climate bionics - reduction of energy consumptions.
Fig. 6 - Photocatalitic oxidation Fig. 7 - Installation of biodynamic i.active cement panels in the Italian Pavilion in Milan (Expo 2015) Reduction Local pollution.
The possibility to use photocatalytic paints and nano materials within the opaque panels, as in smart and efficient layers for innovative envelope, can allow reducing internal air pollution due the presence of occupants or for the use of toxic glue, formaldehyde or other harmful materials, will actively contribute to the CO2 and/or other chemical pollutants reduction [19] In the Technology Center Leitat in Barcelona (Fig. 8), the bioclimatic façade that acts as a filter between interior and exterior, an interface between the weather conditions outside and inside and the material of building envelope has photocatalytic proprieties, which help reduce, under the solar effects, the pollution and the decomposition of polluting city oxides (NOx).
Online since: March 2016
Authors: Pavel N. Belkin, Sergei A. Kusmanov, V.S. Belkin, V.I. Parfenyuk
According to data of the elemental analysis the titanium and oxygen concentrations are 29.8 at.% and 67.9 at.%, respectively.
The rise of the nitriding temperature up to 850 °C results in the reduction of the friction coefficient from 0.7 for the untreated sample to 0.15.
Samples s0.2 [MPa] sв [MPa] d [%] y [%] Untreated 320 370 27 60 Nitrided 370 448 21 55 Nomenclature: s0.2 is the yield strength 0.2% offset, sв is the ultimate strength, d is the uniform elongation, y is the reduction in area.
The rise of the nitriding temperature up to 850 °C results in the reduction of the friction coefficient of nitrided CP-Ti from 0.7 for the untreated sample to 0.15.
The anode nitriding of the low-alloy titanium alloys promotes reduction in their corrosion rate in a solution of sulfuric (4.5 wt.%) and hydrochloric (0.2 wt.%) acids by 2 orders.
The rise of the nitriding temperature up to 850 °C results in the reduction of the friction coefficient from 0.7 for the untreated sample to 0.15.
Samples s0.2 [MPa] sв [MPa] d [%] y [%] Untreated 320 370 27 60 Nitrided 370 448 21 55 Nomenclature: s0.2 is the yield strength 0.2% offset, sв is the ultimate strength, d is the uniform elongation, y is the reduction in area.
The rise of the nitriding temperature up to 850 °C results in the reduction of the friction coefficient of nitrided CP-Ti from 0.7 for the untreated sample to 0.15.
The anode nitriding of the low-alloy titanium alloys promotes reduction in their corrosion rate in a solution of sulfuric (4.5 wt.%) and hydrochloric (0.2 wt.%) acids by 2 orders.
Online since: March 2015
Authors: Qiao Ling Peng, Shun An Cao, Guo Hua Lu
Situation of Feed-water Treatment for Supercritical Unit
Introduction of Feed-water Treatment for Supercritical Unit
At present, there are three main types of feed-water treatment technology for supercritical unit, namely all volatile treatment (reduction), all volatile treatment (oxidation) and oxygenated treatment, also known simply as AVT (R), AVT (O) and OT [1].
After adding oxygen, the oxidation-reduction potential of Fe-H2O system rises from -300/400 mV in AVT condition to +100/150mV.
Moreover, certain relevant data shows that hydrazine has a great influence on oxygenation process.
Consequently, the protective film efficiently restrains flow accelerated corrosion, leading to notable reduction of iron content in water-steam system
There is a visible reduction in pH range (8.0~9.0) during OT operation, compared with the range of 9.0~9.6 (unit with no copper) in AVT condition.
After adding oxygen, the oxidation-reduction potential of Fe-H2O system rises from -300/400 mV in AVT condition to +100/150mV.
Moreover, certain relevant data shows that hydrazine has a great influence on oxygenation process.
Consequently, the protective film efficiently restrains flow accelerated corrosion, leading to notable reduction of iron content in water-steam system
There is a visible reduction in pH range (8.0~9.0) during OT operation, compared with the range of 9.0~9.6 (unit with no copper) in AVT condition.
Online since: July 2006
Authors: P.D. Maguire, T.I.T. Okpalugo, I. Ahmad
An ISA-Labram
with a 50 mW argon ion laser was used to obtain Raman spectra, the D and G peak intensities were
extracted using a double-Gaussian fit and by comparison with data in [1], an estimate of the sp
2/sp3
bonding could be obtained.
Fig. 1 Raman ID/IG ratio for a-C:H films, of various thicknesses, deposited onto silicon, metal and polymer substrates. 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 10 100 1000 T hickness (nm) ID/IG C r PTFE Al Ni Si Steel 0 1 2 3 4 5 Si A l Ni Cr S ubstrate material BDS [MV/cm]In Fig. 2, the plot of breakdown strength shows the reduction in a-C:H quality for deposition onto metal.
The effect of annealing is controlled reduction in sp 3/sp 2and the suspected removal of hydrogen Relative parameter values, from hardness and Raman are shown in Fig. 3, against Si content, normalized with respect to undoped DLC values.
The average reduction of friction with DLC, compared to polymer, was ~ 20% but increased to ~ 33% for optimised films.
Across the stent, the inner surface Raman ID/IG is higher than the outer surface, indicating a lower sp 3/sp2 ratio, i.e. a reduction in quality, Fig. 8(a).
Fig. 1 Raman ID/IG ratio for a-C:H films, of various thicknesses, deposited onto silicon, metal and polymer substrates. 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 10 100 1000 T hickness (nm) ID/IG C r PTFE Al Ni Si Steel 0 1 2 3 4 5 Si A l Ni Cr S ubstrate material BDS [MV/cm]In Fig. 2, the plot of breakdown strength shows the reduction in a-C:H quality for deposition onto metal.
The effect of annealing is controlled reduction in sp 3/sp 2and the suspected removal of hydrogen Relative parameter values, from hardness and Raman are shown in Fig. 3, against Si content, normalized with respect to undoped DLC values.
The average reduction of friction with DLC, compared to polymer, was ~ 20% but increased to ~ 33% for optimised films.
Across the stent, the inner surface Raman ID/IG is higher than the outer surface, indicating a lower sp 3/sp2 ratio, i.e. a reduction in quality, Fig. 8(a).
Online since: December 2016
Authors: Cleopatra Florentina Cuciumita, Ionuţ Porumbel, Sterian Dănăilă
The Ericsson cycle maintains several advantages over the typical Brayton cycle even in the absence of heat regeneration, particularly concerning the NOx and pollutant emission reduction.
The expected practical outcome will be thrust increase and pollutants reduction.
Furthermore, both the experimental and the numerical data will be analyzed using state-of-the-art modal decomposition, not only considering the mean and fluctuation but also identifying the coherent structures and organized structures contributing to mixing, stabilization or local extinction.
Thermodynamic Cycle Analysis for Overall Efficiency Improvement and Temperature Reduction in Gas Turbines, International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 9 (4), 2015 [4] Amend E.W., Petrick M., Pierson E.S.
Emissions Reduction Technologies for Military Gas Turbine Engines, Journal of Propulsion and Power, 21 (2), 2004 [44] Bunker R.S.
The expected practical outcome will be thrust increase and pollutants reduction.
Furthermore, both the experimental and the numerical data will be analyzed using state-of-the-art modal decomposition, not only considering the mean and fluctuation but also identifying the coherent structures and organized structures contributing to mixing, stabilization or local extinction.
Thermodynamic Cycle Analysis for Overall Efficiency Improvement and Temperature Reduction in Gas Turbines, International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 9 (4), 2015 [4] Amend E.W., Petrick M., Pierson E.S.
Emissions Reduction Technologies for Military Gas Turbine Engines, Journal of Propulsion and Power, 21 (2), 2004 [44] Bunker R.S.
Online since: April 2022
Authors: Rajnish Kurchania, Saket S. Phadkule, Kumar Navin, Archana Nigrawal, Richard J. Ball
The addition of both types of nanoparticles in the PVA matrix led to a reduction in water absorption in addition to the water solubility capability of the material when compared to the pure PVA film.
Fig.3(a). shows the XRD data of the (101) plane of the PVA, which appears in the pure PVA and PVA based nanocomposite films.
Water Absorption and Water Solubility data of the Polyvinyl alcohol (PVA) and PVA-based composite films containing SiO2, ZnO and SiO2 - ZnO nanoparticles. 3.3 Tensile strength measurement The tensile test was carried out to measure the maximum load that each type of prepared nanocomposite film can withstand.
The maximum reduction was observed for PVA-ZnO-SiO2 nanocomposite films.
Fig.3(a). shows the XRD data of the (101) plane of the PVA, which appears in the pure PVA and PVA based nanocomposite films.
Water Absorption and Water Solubility data of the Polyvinyl alcohol (PVA) and PVA-based composite films containing SiO2, ZnO and SiO2 - ZnO nanoparticles. 3.3 Tensile strength measurement The tensile test was carried out to measure the maximum load that each type of prepared nanocomposite film can withstand.
The maximum reduction was observed for PVA-ZnO-SiO2 nanocomposite films.
Online since: September 2013
Authors: Li Jie Ding, Hang Fan
Some papers are committed to build up a simple but universal model which can reflect the system stability index by using the historical data and the system state so as to processing real-time stability identification according to the real-time phase measurement results[1]-[6]. .
And the velocity on the r direction is the reduction of the distance of r, so (2) Combining the second equation of (1) and (2), there is (3) Equation (3) indicates that if at any unique time are known, the correspondent can be worked out.
When the spiral crosses the coordinate axis, there will be a mistake and it should be adjusted by replacing with. 4) The calculation of Since the caculation of r is imperative in the whole procedure which largely decide the accuracy and the speed if the operattion speed of the BOCS method, this section focuses on a method to fit a logarithmic spiral to empirical data measured with a displaced origin.
By making full use of the measurement data of the PMU, an accurate estimation for the parameters of the concave can be estimated and by analyzing the motion state of the ball, the stability index can be calculated.
Danforth, “Predicting Critical Transitions From Time Series Synchrophasor Data,” IEEE TRANSACTIONS ON SMART GRID, vol.3, no.4, pp.1832-1840, DECEMBER 2012
And the velocity on the r direction is the reduction of the distance of r, so (2) Combining the second equation of (1) and (2), there is (3) Equation (3) indicates that if at any unique time are known, the correspondent can be worked out.
When the spiral crosses the coordinate axis, there will be a mistake and it should be adjusted by replacing with. 4) The calculation of Since the caculation of r is imperative in the whole procedure which largely decide the accuracy and the speed if the operattion speed of the BOCS method, this section focuses on a method to fit a logarithmic spiral to empirical data measured with a displaced origin.
By making full use of the measurement data of the PMU, an accurate estimation for the parameters of the concave can be estimated and by analyzing the motion state of the ball, the stability index can be calculated.
Danforth, “Predicting Critical Transitions From Time Series Synchrophasor Data,” IEEE TRANSACTIONS ON SMART GRID, vol.3, no.4, pp.1832-1840, DECEMBER 2012