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Online since: February 2013
Authors: Pei Ting Sun, Lian Zhong Huang, Bing Song Yang, Dan Song
It means that an 84% reduction of NOx is made.
Dual fuel engine has a natural advantage in CO2 emission reduction.
In the measure of the contribution to the greenhouse effect, not only see the CO2 emission reduction result, but also consider negative influence CH4 produced.
The table 2 and table 3 are the main parameters of the target ship: Table 3 Measured data of 5S60ME-C load (%) 50.0 75.0 90.0 100.7 measured fuel consumption (g/kWh) 172.3 165.6 168.5 170.2 measured power (kW) 4415 6625 7950 8891 Table 2 The main parameters of target ship main engine rated power 8833 kW gross tonnage 40896 t main engine rated specific fuel consumption 173.775 g/kWh deadweight tonnage 76450 t operational power 7950 kW full load speed 13.6 kn All the following calculations are assuming that the ship is fully loaded and running at the power of 7950kW
According to the data above in the table, using formula (1) and formula (2), when the target ship using original main engine with heavy oil, its EEDI value is 3.60 and EEOI value is 4.30×10-6
Dual fuel engine has a natural advantage in CO2 emission reduction.
In the measure of the contribution to the greenhouse effect, not only see the CO2 emission reduction result, but also consider negative influence CH4 produced.
The table 2 and table 3 are the main parameters of the target ship: Table 3 Measured data of 5S60ME-C load (%) 50.0 75.0 90.0 100.7 measured fuel consumption (g/kWh) 172.3 165.6 168.5 170.2 measured power (kW) 4415 6625 7950 8891 Table 2 The main parameters of target ship main engine rated power 8833 kW gross tonnage 40896 t main engine rated specific fuel consumption 173.775 g/kWh deadweight tonnage 76450 t operational power 7950 kW full load speed 13.6 kn All the following calculations are assuming that the ship is fully loaded and running at the power of 7950kW
According to the data above in the table, using formula (1) and formula (2), when the target ship using original main engine with heavy oil, its EEDI value is 3.60 and EEOI value is 4.30×10-6
Online since: November 2012
Authors: Ali Shakoori, Mahdi Mortazavi, Hadi Nobahari
Results show that the proposed optimization approach to design of DSM was successfully used to find adequate model systems arrangement and minimizing ballast weight to access more capacities for data-acquisition systems or fuels.
DSM sizing DSM initial mass distribution generation Full scale aircraft data No Optimization program Yes DSM desired mass distribution Fig. 2 Methodology flowchart Algorithm Parameters Adjustment.
One solution is weight reduction of DSM and increasing ballast that is the common method.
That is for full-scale aircraft input data that was based on theoretical methods in the design process.
The computer optimization code was tested for simple standard shapes, and their DSM data was obtained exactly.
DSM sizing DSM initial mass distribution generation Full scale aircraft data No Optimization program Yes DSM desired mass distribution Fig. 2 Methodology flowchart Algorithm Parameters Adjustment.
One solution is weight reduction of DSM and increasing ballast that is the common method.
That is for full-scale aircraft input data that was based on theoretical methods in the design process.
The computer optimization code was tested for simple standard shapes, and their DSM data was obtained exactly.
Online since: June 2021
Authors: Adeyemi Abel Ajibesin, Ahmed T. Ishaq, Theman Ibrahim Jirnadu
Over the years, the communication industry has experienced an exponential increase in the demand for information (Data) exchange that had led to an increase in traffic (outburst) along the existing communication channel [1].
The 4th Generation (4G) LTE technology which is data-centric (i.e.
Different technology (modulation scheme) was continually employed in the quest for high data capacity and speed for information exchange (Broadband).
Carnes, "The use of data envelopment analysis for evaluating building energy consumption in terms of productivity," US department of energy, office of science & technical information, p. 12, 1998
Tugcu, "energy efficiency in energy production:data envelopment analysis (DEA) approach for the G-20 countries.," international journal of energy economics and policy, vol. 5, no. 1, p. 7, 2015
The 4th Generation (4G) LTE technology which is data-centric (i.e.
Different technology (modulation scheme) was continually employed in the quest for high data capacity and speed for information exchange (Broadband).
Carnes, "The use of data envelopment analysis for evaluating building energy consumption in terms of productivity," US department of energy, office of science & technical information, p. 12, 1998
Tugcu, "energy efficiency in energy production:data envelopment analysis (DEA) approach for the G-20 countries.," international journal of energy economics and policy, vol. 5, no. 1, p. 7, 2015
Online since: May 2014
Authors: Pedro Vilaça, Telmo Gomes Santos, Rosa M. Miranda
The first constitute additional reworks with material loss with inherent cost increase and productivity reduction.
The data acquisition system monitored the welding process at 0.2 seconds interval, measuring the current intensity through two independent and redundant electrical current transducers (LEM® LF 1005-s and LEM® HTA 400-s), the voltage at power supply terminals and between the tool body and the base plate.
These data allowed to calculate the electrical power delivered to the weld root.
A multifunction data acquisition system (DAQ) NI USB–9008 was used to acquire the data and a dedicated software was developed in LabVIEW® to show process parameters in a graphic friendly user interface in real time and save data at the end of each test.
Fig. 5 Schematic representation of the overall installation including electronics and data acquisition.
The data acquisition system monitored the welding process at 0.2 seconds interval, measuring the current intensity through two independent and redundant electrical current transducers (LEM® LF 1005-s and LEM® HTA 400-s), the voltage at power supply terminals and between the tool body and the base plate.
These data allowed to calculate the electrical power delivered to the weld root.
A multifunction data acquisition system (DAQ) NI USB–9008 was used to acquire the data and a dedicated software was developed in LabVIEW® to show process parameters in a graphic friendly user interface in real time and save data at the end of each test.
Fig. 5 Schematic representation of the overall installation including electronics and data acquisition.
Online since: November 2012
Authors: Amauri Garcia, Daniel J. Moutinho, Laércio G. Gomes, Otávio L. Rocha, Ivaldo L. Ferreira
All thermocouples were connected by coaxial cables to a data logger interfaced with a computer and the temperature data were acquired automatically.
The last step was to provide the theoretical local density for each sample position, based on the macrosegregation profiles (which were experimentally determined by a Rigaku Rix 3100 X-Ray Fluorescence Spectrometer), by using the following equation [17]: (1 ) Results and discussion Fig. 1 shows the temperature data collected in the metal during the course of upward solidification of the Al-6wt%Cu1wt%Si (A) and the Al-6wt%Cu4wt%Si (B) alloys castings in the vertical unidirectional solidification setup.
Moreover, the data acquisition system employed permits accurate determination of the slope of the experimental cooling curves.
Hence, the tip cooling rate,, was determined by considering the thermal data recorded immediately after the passing of the liquidus front by each thermocouple.
The reduction in λ1 for the ternary Al-Si-Cu alloys compared with the corresponding values of λ1 determined for the binary Al-Cu alloy, as shown in Fig.2, lead to a reduction in permeability and hence increased porosity, as shown in Fig. 4.
The last step was to provide the theoretical local density for each sample position, based on the macrosegregation profiles (which were experimentally determined by a Rigaku Rix 3100 X-Ray Fluorescence Spectrometer), by using the following equation [17]: (1 ) Results and discussion Fig. 1 shows the temperature data collected in the metal during the course of upward solidification of the Al-6wt%Cu1wt%Si (A) and the Al-6wt%Cu4wt%Si (B) alloys castings in the vertical unidirectional solidification setup.
Moreover, the data acquisition system employed permits accurate determination of the slope of the experimental cooling curves.
Hence, the tip cooling rate,, was determined by considering the thermal data recorded immediately after the passing of the liquidus front by each thermocouple.
The reduction in λ1 for the ternary Al-Si-Cu alloys compared with the corresponding values of λ1 determined for the binary Al-Cu alloy, as shown in Fig.2, lead to a reduction in permeability and hence increased porosity, as shown in Fig. 4.
Online since: December 2013
Authors: Yue Tao Ge, Xiao Tong Yin, Xiao Ming Liu
The main benefits of SHM are as follows:
l Reduce cost savings by reduction of inspection and repair costs.
l Enhance the passenger throughput by reduction of unnecessary maintenance.
In addition, advanced data and information processing technology is necessary to handle the information received from the sensors [2] Much effort is taken to look for the most reliable technique for the detection, location and characterization of damage in aircraft structure.
The hardware includes the sensor network and the data acquisition/storing system.
The development of an effective structural health monitoring system must finally be integrated into a structural health management system where the data on structural integrity are classified and where procedures of maintenance and allocation of resources are organized [8].
l Enhance the passenger throughput by reduction of unnecessary maintenance.
In addition, advanced data and information processing technology is necessary to handle the information received from the sensors [2] Much effort is taken to look for the most reliable technique for the detection, location and characterization of damage in aircraft structure.
The hardware includes the sensor network and the data acquisition/storing system.
The development of an effective structural health monitoring system must finally be integrated into a structural health management system where the data on structural integrity are classified and where procedures of maintenance and allocation of resources are organized [8].
Online since: April 2006
Authors: Nobuhiro Tsuji, Yoritoshi Minamino, X. Huang, Niels Hansen, Naoya Kamikawa
The ARB process was repeated up to six cycles, amounting to a total thickness
reduction of 98.4%.
Fig.1(b) shows the misorientation distribution obtained from the EBSD data.
Here, M (in tension) is calculated to be 3.19 from the EBSD orientation data for the present sample.
Compared with the experimentally determined 0.2% offset stress, 96.8 MPa, it is clear that the calculated stress using the EBSD data is too low.
However, good agreement is obtained when applying the TEM data.
Fig.1(b) shows the misorientation distribution obtained from the EBSD data.
Here, M (in tension) is calculated to be 3.19 from the EBSD orientation data for the present sample.
Compared with the experimentally determined 0.2% offset stress, 96.8 MPa, it is clear that the calculated stress using the EBSD data is too low.
However, good agreement is obtained when applying the TEM data.
Online since: April 2013
Authors: Li Zhang, Hong Wu, Guang Yuan Nie, Jie Chen
Fig. 3 Arrangement of measuring points Fig. 4 Experimental modal testing system
The 32 points are incited by the hammer in the model experiment and experiment data acquisition is completed.
Through the observation of each measurement point on the response of Bode diagram, the superimposing data of each measuring point is shown in Fig. 5.
Fig. 5 The superimposing data of each measuring point(BODE) The frequency response functions of 32 hammer points were measured in the modal experiment.
The results can provide a useful reference for vibration and noise reduction of the electronic button-sewing machine
Industrial sewing machine vibration and noise reduction technology[D].
Through the observation of each measurement point on the response of Bode diagram, the superimposing data of each measuring point is shown in Fig. 5.
Fig. 5 The superimposing data of each measuring point(BODE) The frequency response functions of 32 hammer points were measured in the modal experiment.
The results can provide a useful reference for vibration and noise reduction of the electronic button-sewing machine
Industrial sewing machine vibration and noise reduction technology[D].
Online since: April 2013
Authors: Chen Guang Xu, Amat Anwar
I.Introduction
Urbanization profoundly changing the natural landscape of a region, The change in the pattern of urban space undoubtedly have an impact on the natural, ecological, social and economic processes of the city and the surrounding area, Therefore, Necessary for quantitative analysis of urban spatial pattern and change, In order to better understand the process of urbanization and its ecological and socio-economic consequences, Because this study used only three periods of remote sensing data (2004, 2007, and 2010).
II.Study area and research data This study selected Zhengzhou City - the city is located in east longitude 112 ° 42 `to 114 ° 14`, Between latitude 34 ° 16 `~ 34 ° 58`.
ENVI software support to use TM1 ~ 7 multi-band multi-spectral remote sensing image (August 30, 2004, May 19, 2007, June 28, 2010, Zhengzhou City, TM1 ~ 7 multi-band image data.)
The main features of the following aspects:(1) The 6a During 2004 to 2010, Zhengzhou City, the urbanization has led to rural settlements, Increase in city residents point land, A significant reduction in the agricultural land and forest land.(2) Zhengzhou City, the urban land increased significantly, As can be seen from the classification results of the statistical, From 2004 to 2010, Zhengzhou City, the urban land use increased nearly doubled, Mainly occupied around the farming and rural land (other sites).(3) The waters are also showing a significant decreasing trend, Especially the waters of the northwest reduce fastest.(4) Drastic reduction of forest land area in Zhengzhou City, Forest land area in 2010 accounted for only 46.29% in 2004.
II.Study area and research data This study selected Zhengzhou City - the city is located in east longitude 112 ° 42 `to 114 ° 14`, Between latitude 34 ° 16 `~ 34 ° 58`.
ENVI software support to use TM1 ~ 7 multi-band multi-spectral remote sensing image (August 30, 2004, May 19, 2007, June 28, 2010, Zhengzhou City, TM1 ~ 7 multi-band image data.)
The main features of the following aspects:(1) The 6a During 2004 to 2010, Zhengzhou City, the urbanization has led to rural settlements, Increase in city residents point land, A significant reduction in the agricultural land and forest land.(2) Zhengzhou City, the urban land increased significantly, As can be seen from the classification results of the statistical, From 2004 to 2010, Zhengzhou City, the urban land use increased nearly doubled, Mainly occupied around the farming and rural land (other sites).(3) The waters are also showing a significant decreasing trend, Especially the waters of the northwest reduce fastest.(4) Drastic reduction of forest land area in Zhengzhou City, Forest land area in 2010 accounted for only 46.29% in 2004.
Online since: February 2011
Authors: Hyun Ki Choi, Chang Sik Choi, Baek Il Bae
However, there were not clear way quantifying the reduction of strength of perforated shearwalls except for the AIJ recommendation which consider only the opening area to wall area ratio.
And numerical data was calculated according to the compression and tensile test of concrete cylinder which were shown in Fig.1.
Steel reinforcement also model using the tensile test data.
Because we carried out the analysis in monotonic increase of displacement and tested data of concrete and steel reinforcement, analyzed capacity was slightly higher than tested capacity of specimens.
[4] Chang-Sik Choi et al, Shear Strength Reduction Ratrio of Reinforced Concrete Shear Walls with Openings, Journal of the Korea Concrete Institute, Vol. 22, No. 4, pp. 451~460, August,( 2010) [5] Paulay, T.
And numerical data was calculated according to the compression and tensile test of concrete cylinder which were shown in Fig.1.
Steel reinforcement also model using the tensile test data.
Because we carried out the analysis in monotonic increase of displacement and tested data of concrete and steel reinforcement, analyzed capacity was slightly higher than tested capacity of specimens.
[4] Chang-Sik Choi et al, Shear Strength Reduction Ratrio of Reinforced Concrete Shear Walls with Openings, Journal of the Korea Concrete Institute, Vol. 22, No. 4, pp. 451~460, August,( 2010) [5] Paulay, T.