Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: June 2014
Authors: Shu Ying Wang, Suo Zhu Chai
In this paper, according to the equal principle of liquid flow [2, 3], we design a multifunctional measuring device -- differential system model, which can measure arbitrary curve tangent slope, also can undertake derived function curve, data point curve fitting (empirical formula), etc.
On, continuous continuation, make its become monotonous reduction function.
If is completely increase trend curve, namely, on increases monotonously, , become monotonous reduction function, according to the model of operation process, complete the experiment according to the operation process, get a curve in , it is of the derived function curve .
If has both increased trend curve segment and decrease trend curve segments, namely, on is not monotonic function, you need to put into monotonous reduction function, then curve drawing, finally determine the derivative curve.on monotonous reduction in increases monotonously, , become on the continuous monotonous reduction function, complete the measurement test, get a curve c, the corresponding functional to , then draw the guide function of curve for. onmonotonous increases in reduction monotonously, in monotonous increases, ,, become on the continuous monotonous reduction function, complete the measurement test, get a curve , The corresponding functional ,, ,then draw the guide function of curve for,,.
On, continuous continuation, make its become monotonous reduction function.
If is completely increase trend curve, namely, on increases monotonously, , become monotonous reduction function, according to the model of operation process, complete the experiment according to the operation process, get a curve in , it is of the derived function curve .
If has both increased trend curve segment and decrease trend curve segments, namely, on is not monotonic function, you need to put into monotonous reduction function, then curve drawing, finally determine the derivative curve.on monotonous reduction in increases monotonously, , become on the continuous monotonous reduction function, complete the measurement test, get a curve c, the corresponding functional to , then draw the guide function of curve for. onmonotonous increases in reduction monotonously, in monotonous increases, ,, become on the continuous monotonous reduction function, complete the measurement test, get a curve , The corresponding functional ,, ,then draw the guide function of curve for,,.
Online since: September 2011
Authors: Mei Rong Jiang, Bo Wang, Feng Nian Jin
It is supposed that temperature reduction of lining takes place when its temperature is highest, in the time, that is (t-τ), its temperature reduction is , its elastic modulus is , its shear modulus is , the equation of elastic modulus varying of lining in arbitrary ages is shown by Eq.1 [4]
On condition of temperature reduction, is negative and is tensile force.
The time of which is temperature difference of the maximum temperature of lining reduction to atmospheric temperature is divided into stages.
The data in Tab.1 were obtained in site by testing.
Temperature reduction occurred in the second day from pouring; the form of concrete is dismounted in the 5-th day from pouring.
On condition of temperature reduction, is negative and is tensile force.
The time of which is temperature difference of the maximum temperature of lining reduction to atmospheric temperature is divided into stages.
The data in Tab.1 were obtained in site by testing.
Temperature reduction occurred in the second day from pouring; the form of concrete is dismounted in the 5-th day from pouring.
Online since: January 2013
Authors: Qi Dong Liu, Ya Li Wang, Su Ping Cui, Yun Feng Zhang, Hong Xia Guo
The exhaust control methods include absorption, selective not catalytic reduction (SNCR) and selective catalytic reduction (SCR).
The data showed that the 3# catalytic material has the most active at low temperature and NO conversion rate can achieve about 97% at 423K.
[8] Liuqing Tian, Daiqi Ye, Catalytic Performance of a Novel Ceramic-Supported Vanadium Oxide Catalyst for NO Reduction with NH3, J.
Smirniotis, TiO2-supported metal oxide catalysts for low-temperature selective catalytic reduction of NO with NH3, J.
[11] Xiaolong Tang, Jiming Hao, Wenguo Xu, Novel MnOx catalyst for low temperature selective catalytic reduction of NOx with NH3, J.
The data showed that the 3# catalytic material has the most active at low temperature and NO conversion rate can achieve about 97% at 423K.
[8] Liuqing Tian, Daiqi Ye, Catalytic Performance of a Novel Ceramic-Supported Vanadium Oxide Catalyst for NO Reduction with NH3, J.
Smirniotis, TiO2-supported metal oxide catalysts for low-temperature selective catalytic reduction of NO with NH3, J.
[11] Xiaolong Tang, Jiming Hao, Wenguo Xu, Novel MnOx catalyst for low temperature selective catalytic reduction of NOx with NH3, J.
Online since: November 2012
Authors: Salina Alias, Megawati Omar, Noor Hana Hussain, Suhaimi Abdul-Talib
The correlation between the observed pseudo-first order degradation rates coefficients of PAHs (kobs) at linear data (in 30 minutes reaction time) and ZVI concentration is shown in Fig. 3.
Data are mean of triplicate samples Fig. 2b: Anthracene degradation at different ZVI concentration.
Data are mean of triplicate samples Fig. 2c: Benzo(a)pyrene degradation at different ZVI concentration.
Data are mean of triplicate samples Fig. 3: Effect of ZVI concentrations on the degradation rates coefficient in different PAHs The normalized surface area rates constant (kSA) were determined (Table 1) in order to identify the actual reactivity of PAHs degradation per unit surface area of ZVI.
Reduction of hexachlorobenzene by nanoscale zero-valent iron: Kinetics, pH effect, and degradation mechanism.
Data are mean of triplicate samples Fig. 2b: Anthracene degradation at different ZVI concentration.
Data are mean of triplicate samples Fig. 2c: Benzo(a)pyrene degradation at different ZVI concentration.
Data are mean of triplicate samples Fig. 3: Effect of ZVI concentrations on the degradation rates coefficient in different PAHs The normalized surface area rates constant (kSA) were determined (Table 1) in order to identify the actual reactivity of PAHs degradation per unit surface area of ZVI.
Reduction of hexachlorobenzene by nanoscale zero-valent iron: Kinetics, pH effect, and degradation mechanism.
Online since: April 2012
Authors: Yang Fang Wu, Yong Gang Shi, Hua Liu
Driven by a generator of mechanical harmonic wave the rollers of the binary row roller chain mesh with the teeth contour of the two inner gears which realizes reduction in small teeth difference and zero-tooth-difference synchronous output.
Driven by a generator of mechanical harmonic wave the rollers of the binary row roller chain mesh with the teeth contour of the two inner gears which realizes reduction in small teeth difference and zero-tooth-difference synchronous output.
Part of the experimental data (see Table 1) show that the harmonic drive mechanism works correctly, transmission feasible, with the input power increases, significantly improved the efficiency of the prototype.
Table 1 Part of the original data Summary A new type of harmonic speed reducer with roller chain drive was developed in this paper.
Driven by a generator of mechanical harmonic wave the rollers of the binary row roller chain mesh with the teeth contour of the two inner gears which realizes reduction in small teeth difference and zero-tooth-difference synchronous output.
Part of the experimental data (see Table 1) show that the harmonic drive mechanism works correctly, transmission feasible, with the input power increases, significantly improved the efficiency of the prototype.
Table 1 Part of the original data Summary A new type of harmonic speed reducer with roller chain drive was developed in this paper.
Friction Forces between Sheet Molding Compound Charge and Mold Cavity Surface in Compression Molding
Online since: February 2011
Authors: Mahmood M. Shokrieh, Reza Mosalmani
The obtained results of the model are in a very good agreement with the experimental data.
In the third part, analytical solution for applied pressure is determined by using presented friction model and is compared with available experimental data.
In addition, parameter as the friction coefficient is defined and determined by very noisy experimental data.
A Comparison between the results of the present model and the experimental data [2] for the same conditions is shown in Fig. 4.
Also, the presented model is more general, needs less experimental data and its results in comparison with experimental results shows good agreement.
In the third part, analytical solution for applied pressure is determined by using presented friction model and is compared with available experimental data.
In addition, parameter as the friction coefficient is defined and determined by very noisy experimental data.
A Comparison between the results of the present model and the experimental data [2] for the same conditions is shown in Fig. 4.
Also, the presented model is more general, needs less experimental data and its results in comparison with experimental results shows good agreement.
Online since: December 2011
Authors: Ping Li, Xue Jun Li, Ling Li Jiang, Da Lian Yang
The basic idea of KPCA [5] is to map the data in initial space into higher-dimensional feature space F with nonlinear mapping function where the PCA method is used to analyze the data.
Assuming mean of mapping data is zero, KPCA solves the eigenvalue problem (1)
Data collection and original feature vector extraction.
Each category takes 150 group (450 groups in all) data as sample.
Dimension reduction by KPCA.
Assuming mean of mapping data is zero, KPCA solves the eigenvalue problem (1)
Data collection and original feature vector extraction.
Each category takes 150 group (450 groups in all) data as sample.
Dimension reduction by KPCA.
Online since: January 2014
Authors: Jie Hui Zeng, Hai Xia Li
The wireless module SIM300 transfers data to the primary station by its GPRS function.
The primary station and slave station using RS485 differential communication to improve data transmission reliability.
Above to ensure SIM300 module to work, then you can realize the GPRS connection through use MCU to send AT commands to control the SIM300.If the connection is successful, send data to the SIM300 module will be returned other data, according to the data returned can know the SIM300 working condition.
If the returned data is "CONNECT OK", which proved connection is successful and you can exchange data.
The wireless module SIM300 transfers data to the primary station by its GPRS function.
The primary station and slave station using RS485 differential communication to improve data transmission reliability.
Above to ensure SIM300 module to work, then you can realize the GPRS connection through use MCU to send AT commands to control the SIM300.If the connection is successful, send data to the SIM300 module will be returned other data, according to the data returned can know the SIM300 working condition.
If the returned data is "CONNECT OK", which proved connection is successful and you can exchange data.
The wireless module SIM300 transfers data to the primary station by its GPRS function.
Online since: September 2013
Authors: Jia Xin Liu, Bing Li
But the data also show 2009 and 2010 relative to the previous year data growth are close to 50%.
The data isn’t growing.
The effectiveness of management reflected in the data of Veh & Veh that represented a decrease of 25% in 2011.
References [1] Qi Y, Smith B, Guo J, Freeway accident likelihood prediction using a panel data analysis approach, J.
[4] Li-Yen, Chang, and Wen-Chieh Chen, Data mining of tree-based models to analyze freeway accident frequency, J.
The data isn’t growing.
The effectiveness of management reflected in the data of Veh & Veh that represented a decrease of 25% in 2011.
References [1] Qi Y, Smith B, Guo J, Freeway accident likelihood prediction using a panel data analysis approach, J.
[4] Li-Yen, Chang, and Wen-Chieh Chen, Data mining of tree-based models to analyze freeway accident frequency, J.
Online since: September 2014
Authors: Naruemon Intarat, Krit Somnuk, Gumpon Prateepchaikul, Thanansak Theppaya
Acid Value Reduction Process in Mixed Crude Palm Oil by Using Low-Grade Ethanol
Naruemon Intarat1, a, Krit Somnuk1, Thanansak Theppaya1
and Gumpon Prateepchaikul1
1Department of Mechanical Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla, Thailand, 90112
akniisnd@gmail.com (Correspondong Author)
Keywords: Ethanol, Esterification, Six-blade disk turbine, Free fatty acid, Mixed crude palm oil.
Consequently, the above reviews induce the objective of this work to determine the feasibility of using low-grade ethanol of acid value reduction process in mixed crude palm oil (MCPO).
Fig. 1 is the schematic diagram of acid value reduction process using the stirred tank reactor and 6-blade disk turbine (rushton turbine) to mix the oil and chemical reactants.
Response surface model (RSM) was analyzed from data in Table 4 using a multiple regression model to fit a second-order polynomial equation.
Consequently, the above reviews induce the objective of this work to determine the feasibility of using low-grade ethanol of acid value reduction process in mixed crude palm oil (MCPO).
Fig. 1 is the schematic diagram of acid value reduction process using the stirred tank reactor and 6-blade disk turbine (rushton turbine) to mix the oil and chemical reactants.
Response surface model (RSM) was analyzed from data in Table 4 using a multiple regression model to fit a second-order polynomial equation.