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Online since: May 2011
Authors: Tong Liu, Zi Chao Dong, Hai Yong Yang
In course of construction,monitoring data was analyzed in time.Structural timbering parameters were modified in response to abnormal monitoring data in order to guarantee safety.the testing results of the safety monitoring system are satisfactory, which serves as a symbol of our research work.
Introduction According to the construction layout of our highway net, the highway has extended to mountainous areas; the reduction of highway ramp and mileage and the solution of line-choosing difficulty when crossing the mountains have become important parts of the highway construction in mountainous areas.
It is worth to mention that the monitor measuring data of K22+020 showed abnormal increment because for the heavy rains lasting for one week in early August 2002, and the data was fed back to the departments of supervision and construction immediately.
From the comprehensive analysis of monitoring measurement data, it was thought that the displacement of surrounding rock and the stress of support were in state of rapid change and the construction must be suspended.
No casualties was caused in this cave-in and the losses were reduced to the minimum due to the accurate and timely analysis of monitor measuring data.
Introduction According to the construction layout of our highway net, the highway has extended to mountainous areas; the reduction of highway ramp and mileage and the solution of line-choosing difficulty when crossing the mountains have become important parts of the highway construction in mountainous areas.
It is worth to mention that the monitor measuring data of K22+020 showed abnormal increment because for the heavy rains lasting for one week in early August 2002, and the data was fed back to the departments of supervision and construction immediately.
From the comprehensive analysis of monitoring measurement data, it was thought that the displacement of surrounding rock and the stress of support were in state of rapid change and the construction must be suspended.
No casualties was caused in this cave-in and the losses were reduced to the minimum due to the accurate and timely analysis of monitor measuring data.
Online since: December 2018
Authors: Boualem Remini, Rachid Zegait
Climate Aspect
The climate in the study area is of the Saharan type which is characterised by light rains that vary between 70 mm in the North and 30 mm in the South using data recorded between 1986 and 2014 sometimes followed by torrential type floods, which are due to heavy rain showers or violent storms sure of small watersheds representing rugged reliefs, these floods contribute to the leaching of the superficial water table located in the alluvium [8], the high temperatures can exceed 45 ° C, in the summer period, the winter is generally mild with average temperatures ranging from 8 to 12 ° C.
The average concentration of chemical oxygen demand (COD), shows extensive reductions in the purification process, 60.97 % yield (Fig.6), justified by recording an average value of COD for raw water 395 mg/l and treated wastewater at the outlet of the WWTP, an average value of 152.54 mg/l.
The M’Zab WWTP was able to reduce particulate pollution, a reduction of 60% .
This implies that these waters require other treatments to reduce these parameters, another finishing basin and disinfection treatment can be very effective for the reduction of some parameter, and improved bacteriological quality.
Can be effective for the reduction of TSS.
The average concentration of chemical oxygen demand (COD), shows extensive reductions in the purification process, 60.97 % yield (Fig.6), justified by recording an average value of COD for raw water 395 mg/l and treated wastewater at the outlet of the WWTP, an average value of 152.54 mg/l.
The M’Zab WWTP was able to reduce particulate pollution, a reduction of 60% .
This implies that these waters require other treatments to reduce these parameters, another finishing basin and disinfection treatment can be very effective for the reduction of some parameter, and improved bacteriological quality.
Can be effective for the reduction of TSS.
Online since: October 2011
Authors: Li Bao Yin, Jing Hui Song, Zhi Yong Wen, Zheng Dong Cui, Yue Xi Yu
Mutually complementary utilization of solar energy and fossil fuel is one of the effective approaches to the moderation of fossil energy crisis and reduction in environmental pollution.
In order to analyze the influence of boiler load on the introduction of solar thermal energy, it firstly collected practical operation data under different load and then overall thermodynamic calculation of the boiler had been conducted based on the data.
And the reduction in coal consumption induces variation in heat flux of the water cooled wall in the furnace.
Besides, the quantity of flue gas decreases with the reduction in coal consumption.
As shown in Fig. 4, in the boiler that has been investigated, the subcooling enthalpy of the water in drum increases with the increasing load while the introduction of solar energy results in a reduction in the subcooling enthalpy.
In order to analyze the influence of boiler load on the introduction of solar thermal energy, it firstly collected practical operation data under different load and then overall thermodynamic calculation of the boiler had been conducted based on the data.
And the reduction in coal consumption induces variation in heat flux of the water cooled wall in the furnace.
Besides, the quantity of flue gas decreases with the reduction in coal consumption.
As shown in Fig. 4, in the boiler that has been investigated, the subcooling enthalpy of the water in drum increases with the increasing load while the introduction of solar energy results in a reduction in the subcooling enthalpy.
Online since: November 2011
Authors: Zong Qiang Zeng, Yong Yue Luo, Guang Lu, He Ping Yu
By comaparing the tear strength data of various samples having a CS content of 1, 3 , 5, 10, 15, and 20 phr given in Table 1,it can be found that, the tear strength of semi-IPN(L) increased from that of the pure SNRL film (44.4kN/m) by 4.2, 7.6, 17.1, 25.7, 36.3 and 28.1kN/m, while those of IPN(L+GA-1H), IPN (L+GA-3H) and IPN(L+GA-6H) increased by 23.8~28.2,41.6~ 45.1, 40.4~47.9, 45.6~50.7, 53.2~64.5 and 39.8~54.0 kN/m, and those of IPN(GA-1H), IPN(GA-3H) and IPN(GA-6H) increased by 13.0~19.9,30.8~53.7,35.4~59.5, 44.1~69.5, 29.3~33.7 and 3.2~9.4 kN/m, respectively.
However there was only a small degree of reduction, when the CS content is not higher than 15phr.
It can be found also that the longer the treating time, the greater the reduction in elongation at break, and 3h was enough for GA treatment.
The reduction in swelling ratio of IPN film means further improvement in resistance to non-polar solvents for IPN film, because of the formation of interpenetrating networks.
The reduction in swelling ratio means further improvement in oil resistance of IPN film, resuluting from the formation of interpenetrating networks.
However there was only a small degree of reduction, when the CS content is not higher than 15phr.
It can be found also that the longer the treating time, the greater the reduction in elongation at break, and 3h was enough for GA treatment.
The reduction in swelling ratio of IPN film means further improvement in resistance to non-polar solvents for IPN film, because of the formation of interpenetrating networks.
The reduction in swelling ratio means further improvement in oil resistance of IPN film, resuluting from the formation of interpenetrating networks.
Online since: May 2014
Authors: Francisco Chinesta, Adrien Leygue, Jose Vicente Aguado, Elías Cueto
The idea of CV is closely related to model reduction of parametrized partial differential
equations, which consitutes nowadays a very active field of research in applied mathematics and
engineering.
This is achieved using a model order reduction technique, the Proper Generalized Decomposition (PGD).
Chinesta, Real-time deformable models of non-linear tissues by model reduction techniques, Comput.
Chinesta, Proper generalized decomposition based dynamic data-driven control of thermal processes, Comput.
Cueto, A short review in Model Order Reduction based on Proper Generalized Decomposition, Arch.
This is achieved using a model order reduction technique, the Proper Generalized Decomposition (PGD).
Chinesta, Real-time deformable models of non-linear tissues by model reduction techniques, Comput.
Chinesta, Proper generalized decomposition based dynamic data-driven control of thermal processes, Comput.
Cueto, A short review in Model Order Reduction based on Proper Generalized Decomposition, Arch.
Online since: February 2014
Authors: Wei Tian, Yue Wang, Jian Yang, Xiu Ming Shan
Sensor registration is a prerequisite for successful multi-sensor data fusion [2].
A least squares fusion of multiple radar data.
An exact maximum likelihood registration algorithm for data fusion.
New least squares registration algorithm for data fusion.
Ill-condition and registration of system error estimation in data fusion systems.
A least squares fusion of multiple radar data.
An exact maximum likelihood registration algorithm for data fusion.
New least squares registration algorithm for data fusion.
Ill-condition and registration of system error estimation in data fusion systems.
Online since: August 2013
Authors: Chin Sheng Chen, Chih Wei Chu, Yen Shin Lai
The real-time NURBS curve fitting process consists of (1) the reading discrete points, (2) curve segmentation and data reshaping, (3) curve fitting, and (4) local and global modulation.
The well developed NURBS curve fitting method along with a given set of data points by least-squares approach is applied to fit each segment in this stage [1].
(2) Access the discrete data points Q , j=0,1,…...
The detailed process will be mentioned in parts of curve segmentation and data reshaping
Fig. 1 The flow chart of optimum NURBS curve fitting method Curve segmentation and data reshaping The input datum will be separated into different segments according to the proposed algorithm shown in Fig. 4.
The well developed NURBS curve fitting method along with a given set of data points by least-squares approach is applied to fit each segment in this stage [1].
(2) Access the discrete data points Q , j=0,1,…...
The detailed process will be mentioned in parts of curve segmentation and data reshaping
Fig. 1 The flow chart of optimum NURBS curve fitting method Curve segmentation and data reshaping The input datum will be separated into different segments according to the proposed algorithm shown in Fig. 4.
Online since: May 2014
Authors: Zhen Zhen Wang, Xiao Jun Tong, Shan Zeng
Second, the improved locally linear embedding algorithm is used to reduce data dimensionality.
Using Euclidean distance to find nearest neighbors for each sample data .
Selecting the proportion of 50% from each type of data as the training set, the rest as the test set.
Experimental steps are as follows: Using the SVM algorithm to train and test the original data; Using LLE algorithm to reduce dimension for the original data, the neighbor number=3,4,5,,15, and the dimension value is the every value of dimension of the data set.
Then Using SVM algorithm to train and test the data; Using the method in paper to reduce dimension for the original data, other process similar to step 2.
Using Euclidean distance to find nearest neighbors for each sample data .
Selecting the proportion of 50% from each type of data as the training set, the rest as the test set.
Experimental steps are as follows: Using the SVM algorithm to train and test the original data; Using LLE algorithm to reduce dimension for the original data, the neighbor number=3,4,5,,15, and the dimension value is the every value of dimension of the data set.
Then Using SVM algorithm to train and test the data; Using the method in paper to reduce dimension for the original data, other process similar to step 2.
Online since: June 2015
Authors: Rusmidah Ali, Wan Azelee Wan Abu Bakar, Salmiah Jamal Mat Rosid
Energy Dispersion X-ray (EDX) analysis revealed that there was 1.02% reduction of Ru in the Ru/Mn/Ce (5:35:60)/Al2O3 used catalysts compared to fresh catalysts.
Introduction Recently, the increasing demand for natural gas and the reduction of greenhouse gases have became more promising.
The diffractogram was collected over the range of 2θ from 10o to 80o and the data obtained were analyzed by a PC interfaced to the diffractometer using the Diffrac Plus.
EDX analysis reveals that there was 1.02% reduction of Ru in the Ru/Mn/Ce (5:35:60)/Al2O3 of used catalyst compared to fresh catalyst.
The reduction was possibly due to the migration of Ru into porous support during the reaction.
Introduction Recently, the increasing demand for natural gas and the reduction of greenhouse gases have became more promising.
The diffractogram was collected over the range of 2θ from 10o to 80o and the data obtained were analyzed by a PC interfaced to the diffractometer using the Diffrac Plus.
EDX analysis reveals that there was 1.02% reduction of Ru in the Ru/Mn/Ce (5:35:60)/Al2O3 of used catalyst compared to fresh catalyst.
The reduction was possibly due to the migration of Ru into porous support during the reaction.
Online since: December 2008
Authors: Karol Iždinský, Carlo Gualco, Alberto Federici, Francesco Mataloni, F. Simančik, Bernhard Schwarz, C. García-Rosales, Marco Grattarola, I. López-Galilea
Finite element simulations of the brazing process have been performed to
evaluate the expected residual stress reduction near the metal-carbon interface.
In this work another route for the reduction of residual stresses in PFCs has been preliminary explored; it entails the use of high strength and high thermal conductivity, but low CTE or graded CTE interlayers, to be brazed in between the low CTE protective material and the high CTE heat sink.
The easiness of industrialization and the costs reduction of the brazing process could be completely exploited.
Finite Element Modeling Finite Element Modeling (FEM) has been used in order to calculate the expected residual stress reduction near the metal-carbon interface with respect to the pure Cu compliant layer.
Zolti: Materials Data, NET Int.
In this work another route for the reduction of residual stresses in PFCs has been preliminary explored; it entails the use of high strength and high thermal conductivity, but low CTE or graded CTE interlayers, to be brazed in between the low CTE protective material and the high CTE heat sink.
The easiness of industrialization and the costs reduction of the brazing process could be completely exploited.
Finite Element Modeling Finite Element Modeling (FEM) has been used in order to calculate the expected residual stress reduction near the metal-carbon interface with respect to the pure Cu compliant layer.
Zolti: Materials Data, NET Int.