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Online since: July 2011
Authors: Xue Gang Luo, Xiao Yan Lin, Jian Ping Zhang, Chi Zhang
The equilibrium adsorption data were well represented by the Freundlich isotherm model and the saturated adsorption capacity could reach 24.2mg/g.
Recently, many technologies and materials for removal of NB from a contaminated environment have been developed, including adsorption, photochemical reduction and oxidation.
The equilibrium data was discussed by Freundlich model in linear equation as shown Eq. (4) [5], where qe (mg/g) and Ce (mg/L) are the amount of adsorbed NB per unit weight of adsorbent and NB concentration in solution at equilibrium, respectively.
Fig. 4 shows that the Freundlich isotherm model provided an excellent fit to the isotherm data, giving R2 values of 0.998, which reveals that the interaction between NB and AmL is multiple-layer adsorption process rather than monolayer adsorption process.
Equilibrium data were best described by the Freundlich isotherms model.
Online since: August 2014
Authors: Yi Xuan He
After studying on the production condition, time and queue length of traffic jam after lane occupation happens, we propose a model based on famous traffic flow theory and we use related data to verify the rightness of our model.
Result shows that our model can predict the development of traffic jam caused by lane occupation Introduction Lane occupation is a reduction in cross section or road capacity because of traffic accident, roadside parking and so on.
Experments To verify the correctness of our model, we collect the data from a video which can be download here.
According to the equations above and the data from the video, we can get the actual road capacity , density , road capacity in upstream section .
According to the statistical data, when the vehicle flowrate is 1500pcu/h, the car speed is near 45km/h, so k1 is 33 pcu/km.
Online since: July 2013
Authors: Ji Tai Niu, G. Turkalj, J. Brnic, M. Canadija, D. Lanc, G. Vukelic, Marino Brcic, Sanjin Krscanski
Furthermore, experimentally obtained data of material behavior is known to serve as the most relevant data in the mentioned design procedure.
The engineering design process requires a lot of data and appropriate calculations.
Numerical structure analysis and experimental data contribute to the successful design.
Data from Prior Research Material under consideration.
Table 1. 20MnCr5 steel and S275JR steel- data related to mechanical properties.
Online since: August 2009
Authors: Yuan Zhang
The most general redistribution method of manufacturing and assembly line is to adjust by work planner who plans production schedule according to experience, but the benefit is often less than the expenses coming from the reduction of the circulation time.
All type of packaging data are put into the database in unison, in this way we are very easy to predict speed of the manufacturing and assembly in each process location.
All type of packaging data are put into the database in unison, in this way we are very easy to predict speed of the manufacturing and assembly in each process location.
Its process planning and production planning are all revised in real time; (3) Serving module: Outputting the statistics data, connecting with the other software, and realizing calculation and modifying about the work piece.
Its process planning and production planning are all revised in real time; (3) Serving module: Outputting the statistics data, connecting with the other software, and realizing calculation and modifying about the work piece.
Online since: July 2012
Authors: Jian Wei Guo, Chu Fen Yang, Shi Ying Yang, Guan Feng Wei
Though for the solvent distillation column and residual solvent stripper the interation parameters were provided by the data base of Aspen Plus [7], and those of the extraction column were correlated from the liquid-liquid equilibrium data of the MIBK-water-phenol- hydroquinone quaternary system [8].
The steam flow of the coal-gasification wastewater in the simulation was 100 t/hr, other involved input data including composition for streams was shown in table 1.
Table 1 Input Data for streams Process Parameter Wastewater Solvent Mass flow rate [t/hr] 100 Temperature [°C] 40 40 Pressure [atm] 1.05 1.05 Compositon for Input Streams (mass fraction) Water 0.994590 0 Phenol 0.00275 0 Hydroquinone 0.00266 0 MIBK 0 1.0 Results and discuss Extraction Process.
Fig.4 Relation of theoretical stages and reflux ratio Fig.5 Effect of feed stage on reflux ration The increase of the number of theoretical stages means the increase of the equipment cost, while the decrease of the reflux ratio means the reduction of energy consumption.
It meant that when the number of stages was more than 14, the reduction of reflux ratio by the increase of theoretical stages had been very small.
Online since: January 2012
Authors: Faruk Yigit
The setup for the experiment consisted of a mold and two supporting devices: i-) a data acquisition system and ii-) a furnace.
The data acquisition system consisted of a labtop computer, Omega Personal DaqView Plus data acquisition/control units and data acquisition software package.
Perhaps the most significant improvements were more uniform contact along the mold-shell interface, and a reduction in crack nucleation in the ingot due to slower, but more uniform heat extraction.
Perhaps the most significant improvements are more uniform contact along the mold-shell interface, and a reduction in crack nucleation in the ingot due to slower, but more uniform heat extraction.
Online since: August 2007
Authors: S. Calcagno, F.C. Morabito, Mario Versaci, Michele Buonsanti
The available measurement data are explored in order to some clues may emerge in the pick-up signal that potentially represents structural modifications of the bars.
Both the measurement data and the geometric localization will be considered as fuzzy numbers, i.e., the reading will be associated to a "confidence" interval that measures our trust about that number.
Results were then improved both using an algorithm of automatic extraction of FIS from numerical data [7] (MATLAB® GENFIS System) and introducing learning (MATLAB® ANFIS).
Performing a careful analysis of the experimental database it has been possible to reduce the number of the inputs and the cardinality of the fuzzy data bank .
This feature turns out to be decisive in practical real time applications, where the reduction of the inspection time is a major demand, and in the design of novel large systems where an effort must be made to reduce diagnostic concerns.
Online since: November 2016
Authors: L. Mancic, Claudinei Santos, Marcio Barreto Carneiro, Bojan A. Marinkovic
Thermal expansion/shrinkage of compacted sample was measured by dilatometry and the data obtained were plotted as ΔL/L0 (thermal deformation) according to temperature, T (ºC), in a dilatometer NETZSCH DIL 402 C, with temperature range from 30 ºC to 1500 ºC with heating rate of 10 ºC/min in air.
The method measures the thermal expansion of the sample length and the data plotted as ΔL/Lo according to temperature.
Experimental data of bending breaking stress were analyzed by Weibull statistics and distribution parameters, characteristic resistance () and Weibull modulus (m), were determined by linear regression method.
The result of Weibull method applied to the 4-point flexural strength data in 17 developed samples is shown in Fig. 4a.
The high furnace temperature makes critical the reduction of α-Al2O3 properties, which determine aging, mainly through grain growth.
Online since: February 2012
Authors: Jian Peng Yao, Suo Jun Hou, Fu Xiang Guo, De Guang Fang, Wen Ku Shi
The proceed of model analysis 1)calculate the steady and unsteady flow field in Fluent 2) when the flow field is dynamic stable, use FW-H model, get surface pressure fluctuating data(.index and .data files) 3) read data from Fluent into Sysnoise as surface distribute sources, find the main noise source 4) put forward some improved schemes, calculate the steady-state flow of these schemes using BNS model, compute acoustic power of each scheme in the form of surface and volume contribution 5) calculate aerodynamic noise of each scheme, compare the overall sound pressure level on field points, compare the conclusion with the results with BNS model Comparison of simulation results G.
Data from Fluent is read into Sysnoise to compute the propagation of noise.
Fig.10 Spectrum of sound pressure level Fig.11 Sound pressure level around drivers’ears Fig.12 Average sound pressure level of plane field point To examine the overall noise reduction effect of the improved schemes, compare the average sound pressure level of the 5 group plane field points.
(2) As the sound propagation is directional, the reduction of sound source power doesn’t mean all field points will drop.
Online since: July 2003
Authors: M.M. Abdel Wahab, Ian A. Ashcroft, A.D. Crocombe, L. Joussot
In order to calculate the damage parameters, a system of equations, in which the number of unknowns is less than the number of equations, has been derived using a combination of experimental data, finite element results and the damage law.
Introduction In many industries such as aerospace and automotive, weight reduction is of a major concern.
Its main advantage is not only the weight reduction but also the manufacturing costs saving.
These data are summarized in Table 2.
As we can observe, the curve fits the measured data very well.
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