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Online since: October 2002
Authors: M. Martins, José A. Covas
Also, a reduction of the specific power consumption and extrudate-swell have been found.
Generally a reduction in viscosity and/or an increase in temperature are proposed as major causes for this behavior.
At low flow rates pressure reduction due to ultrasonic vibration is important and seems to be associated with an increase in melt temperature.
As the flow rate increases the pressure reduction becomes less significant and so does the temperature increase.
At high flow rates, the vibration does not affect the quality of the extrudate. 60 70 80 90 100 110 120 130 140 150 0 50 100 150 200 250 Data Reading ����P [10 4 MPa] Shear rate (1/s) 6.94 13.89 20.83 27.83 Fig. 2 - Influence of vibration on pressure drop.
Online since: February 2011
Authors: Tong Shui Wu, Xian Fei Luo, Qing Liu
(8) (9) (10) (11) , (12) Step 3: Data collection and attributes reduction.
The collected data is different from each other in unit and the criteria, so the difference must be eliminated before the date is used.
In this paper, the VPRS model is used for evaluation attribute reduction as previous introduced.
The condition attributes representing a pattern's elements were scaled approximately onto [0, 1] by the formula (13): (13) Where and are minimal and maximal values of the attribute within the training set data.
According to process of attribute reduction, the generalized rules are listed in table 3.
Online since: October 2006
Authors: R. Swaminathan, J. Woods, S. Calvin, Joseph Huth, M.E. McHenry
The miscibility gap in the pseudo-binary ZnFe2O4/NiFe2O4 system was modeled using equilibrium solution data.
We investigate this pseudo-binary system for which thermodynamic activity data exists [11].
These observations were quantified using fits to the EXAFS data.
Magnetization data from two different samples sintered under identical conditions confirmed this anomaly.
This happens at relatively low temperatures, as is clearly supported by the miscibility gap data.
Online since: December 2013
Authors: Ming Chih Huang, Jer Fu Wang, Yen Po Wang, Tzu Kang Lin
The primary structure is assumed to be linear on account of substantial reduction of seismic forces due to the installation of SDBs for which a bilinear hysteretic model is considered.
The primary structure is assumed to be linear on account of the reduction in seismic forces due to the SDBs.
Using the first set of data for and Eq.(11), we define the partial measure-of-fit as (14) The values of and are obtained by simultaneously solving , (15) Similarly, application of the second data set for and Eq.(12) produces another partial measure-of-fit as (16) extremization of Eq.(17) with respect to the unknowns yields , , (17) from which the values of , and are obtained.
Moreover, parameters identified from different set of data are somewhat different.
The acceleration responses contaminated with an artificial white noise signal of 5% noise-to-signal ratio are considered in the system identification analysis to simulate the measured data in a more realistic manner.
Online since: February 2011
Authors: Gouda M. Ghanem, Mohamed M. Ebd-Elrazek, Sayed M. Abd El-Bakey, Ahmend Ali Hassan, Esraa Emam Ali
In order to verify the analytical model used in this research using test results of the experimental data of the experimental branch, the finite element analysis were performed then to be able to proposed a guide charts which can be used to predict the moment capacity of joint in beam-column connection in RC frames subjected to fire taking into consideration the different fire durations, fire temperature, and concrete strength.
It can be seen that from the this charts that the ratio between the Mf to Mo ranged from 0 to 1 and this explained that as the temperature increase the ratio decreased and this attributed to the reduction in the stiffness of section capacity which is subjected to fire, also it can be demonstrated that as the temperature increase with the increase in the concrete compressive strength the ratio between Mf to Mo increased and also it can be seen that from this chart that as the duration which the joint subjected to fire increase the ratio between Mf to Mo decreased.
Finally it can be seen that these charts Considered a guide charts which can enable the designer to estimate the reduction in the moment capacity of the critical sections in two hinged and one bay RC frames after subjecting Conclusions This paper can conclude the following:
- Quenching the specimens by water caused a reduction in failure load at 600°C by 21% compared to control specimen
- Cooling the specimen by air caused a reduction in failure load by 6.7% compared to control specimen, which indicate that cooling by air is less effective than cooling by water.
Online since: August 2013
Authors: Jing Yu Guo, Ran Yang, Zhi Gang Hu, Wei Dong Song, Gao Feng Liang, Xiao Li Yang, Xiao Wei Son
Pre-processing of The Data.
Correction of Synthetic Data.
Figure 1: Synthetic data correction.
Correction of Experimental Data.
The method can be applied at an early stage of automated data analysis, without prior knowledge of the data.
Online since: May 2012
Authors: Se Kou Singare, Shou Yan Zhong
Then, the CAD data are transferred into CNC milling machine to manufacture the custom contoured cushion.
The data are saving as ASCII text.
Figure 1: Raw measurement data at the pressure sensing points (left), a better approximation of the seat contour using Matlab (right) Once collected, the data were then transferred into Matlab program to process the pressure distribution data transformation to obtain the deflection depth of the seating area.
Then the data were save as “txt” format and load into Rhinoceros software and a CAD model of cushion shape was built up by fitting NURSB surfaces of the measurement data.
Reduction of sitting pressures with custom contoured cushions.
Online since: April 2009
Authors: Paul Koltun, Dayalan R. Gunasegaram, Ambavalavanar Tharumarajah
In addition, HPDC is poised for expansion well into the future as a result of the conversion from ferrous castings to light alloy versions through the mass-reduction programs implemented by the automotive industry.
More emissions of CO2 and other GHGs are experienced in aluminium production during the electrolytic reduction of alumina into aluminium (Hall-Heroult process) and, in magnesium production, either in the silicothermal reduction of dolomite (Pidgeon process) considered in this work or the alternative leaching of magnesite (electrolytic process).
Since it was not possible to locate an Australian foundry that produced a similar automotive component using magnesium, typical data for a magnesium plant in the United States (US) were used.
The data used in the present study were derived from previous investigations for both aluminium [3-5] and magnesium [6-8].
Accordingly, it can be seen from Table 6 that yield increase had an overwhelming effect on GHG emissions, whilst QA reject rate reduction was a distant second and cycle time reduction having the least influence.
Online since: July 2019
Authors: Joko Suparno, Dimas Ardiansyah Halim, Ady Setiawan, Junaidi Junaidi, Marwan Effendy, J. Jamari
To collect the data corresponding to the objective of research, a disc on disc testing instrument construction was designed.
In the experiment without graphite treatment, the following data is obtained.
The experiment conducted with graphite polishing in 5-minute time interval in 8 cycles provides the data shown in Table 3.
Graphite use and wheel weight reduction in testing with 5-minute polishing time interval Material Size [mm] Reduction [mm] Prior length of graphite 11.8 1.05 Final length of graphite 10.75 Material Size [gram] Reduction [gram] Prior weight of wheel specimen 140.2 0.03 Final weight of wheel specimen 140.17 Data shown in Fig. 4.a, when communicated with Table 3, suggests that the graphite length decreases by 1.05 mm after the wheel surface polishing.
The data obtained is presented in Table 4.
Online since: March 2013
Authors: Chun Juan Han
This paper deals with a new Carbon Di Oxide (CO2) EOR technique, “HOT CO2” which includes combination of thermal and solvent techniques where miscibility and viscosity reduction are primary concern.
After injection of HOT CO2 Flood at calculated IP=3000psi and IT=300oF.The reservoir attend the Saturation Pressure at 2200psi.Dual effect of HOT CO2 at viscosity reduction of Heavy oil from 592cp to 65cp from fig1.Selecting the applicable crude oil UOP K From Table4.
In the mentioned Summary of HOT CO2 Calculation there is marginally reduction in the viscosity of oil which ultimately affects the RF of the HOT CO2 flooding which is 3% increase from the convention CO2 flooding.
Screening Criteria of HOT CO2 Flooding Before doing any type of flooding the screening parameter is important aspect for oil recovery at the same time screening criteria however should not be considered absolute because they are based on limited theory and field data hence a candidate reservoir for one or more EOR process should not be discarded because it does not satisfy one or two criteria.
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