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Online since: April 2015
Authors: Nikolay Lazarovski, Paskal Novakov, Anastas Yangyozov
The distribution of velocities and pressures at each consecutive solution acts for input data and boundary condition for the next higher calculus stages.
Comparison of numerical results with experimental data The graphically presented results on Fig. 6 allow to get an idea for the P12-90/18 turbine condition before and after reconstruction.
Changes in the mass flow, caused by the opening of the nozzle valves and increasing the rate of partial affects reflect on velocity reduction and heat drops in the Fig. 4.
Worn-out seals lead to reduction of the efficiency of the turbine that at the cost of a higher inlet mass flow achieves corresponding output power at the required steam consumption for consumers.
This reduction of useful flow is accompanied by low velocities in the blade apparatus of the nozzle and rotating blades.
Comparison of numerical results with experimental data The graphically presented results on Fig. 6 allow to get an idea for the P12-90/18 turbine condition before and after reconstruction.
Changes in the mass flow, caused by the opening of the nozzle valves and increasing the rate of partial affects reflect on velocity reduction and heat drops in the Fig. 4.
Worn-out seals lead to reduction of the efficiency of the turbine that at the cost of a higher inlet mass flow achieves corresponding output power at the required steam consumption for consumers.
This reduction of useful flow is accompanied by low velocities in the blade apparatus of the nozzle and rotating blades.
Online since: February 2026
Authors: Saleh Eesaa Jasim, Nur Iffah Zulaikha Azman, Syarifah Norsuhaila Syed Mahmud, Mohamad Ashry Jusoh, Muhammad Faris Firdaus Arisah
In contrast, at 200 °C, the FTIR spectrum shows a significant reduction in the intensity of C–H peaks.
Figure 5 presents the BET results, showing the surface areas of samples subjected to hydrothermal treatment at 160 °C, 180 °C, and 200 °C, respectively, and the corresponding BET data are summarized in Table 1.
The partial ordering at this temperature corresponds well with the BET data, which show the highest surface area.
The fragmentation and reduction in particle size likely enhance the diffusion of activating gases during carbonization, contributing to the highest BET surface area observed.
These localized reductions may result from interfacial polarization or resonant absorption effects due to the porous structure and increased dielectric heterogeneity.
Figure 5 presents the BET results, showing the surface areas of samples subjected to hydrothermal treatment at 160 °C, 180 °C, and 200 °C, respectively, and the corresponding BET data are summarized in Table 1.
The partial ordering at this temperature corresponds well with the BET data, which show the highest surface area.
The fragmentation and reduction in particle size likely enhance the diffusion of activating gases during carbonization, contributing to the highest BET surface area observed.
These localized reductions may result from interfacial polarization or resonant absorption effects due to the porous structure and increased dielectric heterogeneity.
Online since: June 2010
Authors: Ke Qin Yan, Xuan Yi Zhou, Ming Gu
Beyers[1] tried to get the data
with several three-cup anemometers on a six meter mast in Antarctic.
Each three-cup anemometer is about 20cm high, so the data is rough.
A Wind Rake is adopted to get the data at different height.
The expressions of mean velocity profiles and turbulence intensity are proposed from the data get by the wind rake.
Scan valve and DSM3000 are adopted as data collection dealt with program.
Each three-cup anemometer is about 20cm high, so the data is rough.
A Wind Rake is adopted to get the data at different height.
The expressions of mean velocity profiles and turbulence intensity are proposed from the data get by the wind rake.
Scan valve and DSM3000 are adopted as data collection dealt with program.
Online since: August 2013
Authors: Can Wang, Hong Feng Hou, Chun Ming Xu
Simulated data is shown in Table 1:
Tab.1.
Simulated data P(UO) L(UO) RE event a 0.1 0.9 0.09 event b 0.9 0.1 0.09 event c 0.1 0.1 0.01 event d 0.9 0.9 0.81 From Table 1 we can conclude that the larger the risk value is, the more attention should be paid.
Simulated data are shown in Table 2: Tab.2.
Five groups of simulated data Operating capital Technique & Equipment Cost per capita Number of employees Price of product Profit 5 12 12 20 262 13.04 10 10 9.6 15 181 23.7 12 20 10 13 160 11.4 8 5 6 5 50 10.35 15 30 9 10 140 25.1 We take ten thousands as quantity units except one index(Number of employees), selecting data in the first group to analyze the sensitivity.
Specific data is shown as follows: Tab.3.
Simulated data P(UO) L(UO) RE event a 0.1 0.9 0.09 event b 0.9 0.1 0.09 event c 0.1 0.1 0.01 event d 0.9 0.9 0.81 From Table 1 we can conclude that the larger the risk value is, the more attention should be paid.
Simulated data are shown in Table 2: Tab.2.
Five groups of simulated data Operating capital Technique & Equipment Cost per capita Number of employees Price of product Profit 5 12 12 20 262 13.04 10 10 9.6 15 181 23.7 12 20 10 13 160 11.4 8 5 6 5 50 10.35 15 30 9 10 140 25.1 We take ten thousands as quantity units except one index(Number of employees), selecting data in the first group to analyze the sensitivity.
Specific data is shown as follows: Tab.3.
Online since: November 2012
Authors: Wen Hua Han, Xu Chen, Jun Xu
PCA-CCPSO
PCA
Principal component analysis (PCA) [5] is a multivariate technique that analyzes a data table in which observations are described by several inter-correlated quantitative dependent variables.
In PCA, it will be easy to analysis the data and reduce the noise when is as small as possible.
But is the object data dimension after dimension reduction, so that it will lose some useful information if become too small.
Therefore, the contribution rate of the main elements of the data must be considered.
Contribution rate is the weight of the principal component in all the data analysis.
In PCA, it will be easy to analysis the data and reduce the noise when is as small as possible.
But is the object data dimension after dimension reduction, so that it will lose some useful information if become too small.
Therefore, the contribution rate of the main elements of the data must be considered.
Contribution rate is the weight of the principal component in all the data analysis.
Online since: November 2014
Authors: Li Ya Zhang, Zhui Hui Xu
Fig. 3 Schematic circuit for SCI communication interface
Software design of the acquisition system
The main function of the software includes acquisition of the lung sound signals, setup of the data sampling rate, initialization of serial communication ports, saving of lung sound data as well as the timer and the interrupt handling of the timer.
And then start the timer, while waiting for an interrupt occurs. if an interrupt occurs, you can transfer data to a PC through the SCI port.
Fig. 4 The flow chart of system software Experiment and result analysis Fuctional test of the designed system At last, the experiment of acquisition of lung sound signals is done based on the designed system, the acquisition data is send to MATALB software, in the experiment, the six sounds (wheezes, velcro, coarse crackles, fine crackles, pleural rub and rhoncus) is collected and the result is shown in figure 5.it is showing that the acquisition system is working properly, and reliable design.
After collecting data on the software system, the data is sent via SCI interface to personal computer, and analized in the upper machine. based on this system, the relevant experimental results demonstrate that the system meets the design features and reliable work.
Lung Sound Noise Reduction Using Gabor Time-Frequency Masking[C]. proceeding of World Congress on Medical Physics and Biomedical Engineering, 14:971-974. (2006) [5] G Ntoumenopoulos, Y Glickman.
And then start the timer, while waiting for an interrupt occurs. if an interrupt occurs, you can transfer data to a PC through the SCI port.
Fig. 4 The flow chart of system software Experiment and result analysis Fuctional test of the designed system At last, the experiment of acquisition of lung sound signals is done based on the designed system, the acquisition data is send to MATALB software, in the experiment, the six sounds (wheezes, velcro, coarse crackles, fine crackles, pleural rub and rhoncus) is collected and the result is shown in figure 5.it is showing that the acquisition system is working properly, and reliable design.
After collecting data on the software system, the data is sent via SCI interface to personal computer, and analized in the upper machine. based on this system, the relevant experimental results demonstrate that the system meets the design features and reliable work.
Lung Sound Noise Reduction Using Gabor Time-Frequency Masking[C]. proceeding of World Congress on Medical Physics and Biomedical Engineering, 14:971-974. (2006) [5] G Ntoumenopoulos, Y Glickman.
Online since: February 2012
Authors: Feng Li, Sheng Hu Cao, Zhi Shen Wu
The reduction in strength of carbon fiber is attributed to oxidation of the high strength grapheme layer at the near-surface fiber region.
From this figure, the temperature effect on the strength is clearly evident despite the considerable data scattering, indicating some distinct variation states with increasing temperature.
Between 40 and 60°C, a rapid reduction in average strength was observed, reaching a maximum (about 31% of its initial value at room temperature) at 60°C.
From this figure, the temperature effect on the strength is clearly evident despite the considerable data scattering, indicating some distinct variation states with increasing temperature.
Between 40 and 60°C, a rapid reduction in average strength was observed, reaching a maximum (about 31% of its initial value at room temperature) at 60°C.
Online since: January 2007
Authors: Uttam Mulik, Dinesh Amalnerkar, A.M. Funde, D. Bhange, Sandesh R. Jadkar, S.D. Sathaye, Ranjit R. Hawaldar, V. Ramaswamy
The dramatic reduction in the melting point as revealed by hot
stage polarizing microscopy is the salient feature of the work.
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Keywords: Anthracene, Nanostructures, Micro-tapes, Liquid-Liquid Interface,
Thin Films
1.Introduction
Exploring new pathways to grow thin films or nanostructures of organic
semiconducting materials that permit a higher control of the sample quality in terms
of composition, uniformity, morphology, structure, and, thereby, optical & transport
properties is an arena of profound activity.
The position of baseline in all these spectra is somewhat uncertain, since it was experimentally difficult to obtain reliable measurements at lower wavelengths than those shown in fig 7 (a) - (d).The nominal thickness calculated from the optical absorption data accounts to be 17.88 nm per dip.
A dramatic reduction in melting point was noticed for these films substantiating their nano nature.
The position of baseline in all these spectra is somewhat uncertain, since it was experimentally difficult to obtain reliable measurements at lower wavelengths than those shown in fig 7 (a) - (d).The nominal thickness calculated from the optical absorption data accounts to be 17.88 nm per dip.
A dramatic reduction in melting point was noticed for these films substantiating their nano nature.
Online since: June 2024
Authors: Ashraf Mohamed Heniegal, Mohamed Amin, Nirmen Abdelaziz, Ahmed M. Tahwia
Based on experimental data, replacing aggregate reduced the density of lightweight concrete by up to
1400 kg/m3, lowered its compressive strength by up to 33.8 MPa upon complete replacement of the aggregate, and diminished carbon emissions by up to 2.05%.
Hence, rationing the aggregate quantities in the concrete industry is crucial to complying with the Paris Climate Agreement, which obligates a 16% emissions reduction by 2030 and 100% by 2050 for net zero emissions.
It is important to acknowledge the ecological impact, although the ecological impacts related to fine and coarse aggregate lack reliable data [33].
It is noted that the density reduction depends on the aggregate replacement type and proportion, which corresponds to [3, 22].
Tae, Effect of supplementary cementitious materials on reduction of CO2 emissions from concrete, Journal of Cleaner Production 103 (2015) 774-783. https://doi.org/10.1016/j.jclepro.2014.03.018 [52] W.
Hence, rationing the aggregate quantities in the concrete industry is crucial to complying with the Paris Climate Agreement, which obligates a 16% emissions reduction by 2030 and 100% by 2050 for net zero emissions.
It is important to acknowledge the ecological impact, although the ecological impacts related to fine and coarse aggregate lack reliable data [33].
It is noted that the density reduction depends on the aggregate replacement type and proportion, which corresponds to [3, 22].
Tae, Effect of supplementary cementitious materials on reduction of CO2 emissions from concrete, Journal of Cleaner Production 103 (2015) 774-783. https://doi.org/10.1016/j.jclepro.2014.03.018 [52] W.
Online since: March 2008
Authors: Yvan Houbaert, Fernando González, Daniel Ruiz
The reduction of
the peaks during the ageing after annealing is more noticeable in quenched specimens than in air
cooled ones, and in furnace cooled specimens the reduction is even smaller, indicating that the
process is really an ageing phenomenon.
The low frequency Z-peak height is not measured in the case of the FeSi-7 sample because the frequency at which the maximum is reached is not a reliable data.
The low frequency Z-peak height is not measured in the case of the FeSi-7 sample because the frequency at which the maximum is reached is not a reliable data.