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Online since: February 2012
Authors: Wei Xiang Wang, Zhi Chao Chen, Ping Li, Sheng Qiang Song, Zheng Liang Xue
The standard Gibbs free energy change can be calculated by using basic thermodynamics data [8] when the vanadium oxides were reduced by reducing agent ferrosilicon
Then it is more beneficial to the ferrosilicon reduction reaction.
After 3~5 minutes, prepare tapping after the self-reduction agglomerate are fully melting.
In the self-reduction agglomerate, the amount of reluctant ferrosilicon is surplus.
(In Chinese) [8] Yingjiao Liang, Yinchang Che: Thermodynamics Data Book of Inorganic Compound.
Then it is more beneficial to the ferrosilicon reduction reaction.
After 3~5 minutes, prepare tapping after the self-reduction agglomerate are fully melting.
In the self-reduction agglomerate, the amount of reluctant ferrosilicon is surplus.
(In Chinese) [8] Yingjiao Liang, Yinchang Che: Thermodynamics Data Book of Inorganic Compound.
Online since: July 2011
Authors: Qian Wang, Ming Xing Zhou, Bao Yi Wang
Additionally, the urea and fuel consumption and ammonia leakage have been compared and analyzed respectively, the experiment data indicates that the urea water solution consumption ratio is only 5.7% of fuel for this SCR system, while its average ammonia slip is below 5 ppm.
The engine is operated with a comparably high NOx raw emission, after using SCR system, a large reduction in NOx emission.
However, the experiment data indicates that urea water solution consumption ratio is only 5.7% compared to fuel used for the SCR system.
Marti, NOx-reduction in diesel exhaust gas with urea and Selective Catalytic Reduction, Comb.
DaCosta, Urea thermolysis and NOx reduction with and without SCR catalysts, Applied Catalysis B: Environmental 46 (2003) 17-34
The engine is operated with a comparably high NOx raw emission, after using SCR system, a large reduction in NOx emission.
However, the experiment data indicates that urea water solution consumption ratio is only 5.7% compared to fuel used for the SCR system.
Marti, NOx-reduction in diesel exhaust gas with urea and Selective Catalytic Reduction, Comb.
DaCosta, Urea thermolysis and NOx reduction with and without SCR catalysts, Applied Catalysis B: Environmental 46 (2003) 17-34
Online since: September 2013
Authors: Aissa Boudjella, Brahim Belhouari Samir, Omar Kassem Khalil
The percentage of storage reduction and data anomalies are investigated for every normal form and database system.
For the advantages, Normalization avoids data modification (INSERT/DELETE/UPDATE) anomalies as each data item resides in one place.
Data are organized and structured more logically.
Also, it enforces Referential Integrity on Data, namely the enforcement of relationships between data in joined tables.
ACM SIGMOD International Conference on Management of Data, May 31-June 1, 1979, Boston, Mass.
For the advantages, Normalization avoids data modification (INSERT/DELETE/UPDATE) anomalies as each data item resides in one place.
Data are organized and structured more logically.
Also, it enforces Referential Integrity on Data, namely the enforcement of relationships between data in joined tables.
ACM SIGMOD International Conference on Management of Data, May 31-June 1, 1979, Boston, Mass.
Online since: May 2009
Authors: R.M. Gargarello, D. Di Gregorio, H. Huck, J. Fernandez Niello, G. Curutchet
Aerobic reduction of uranium(VI) by Acidithiobacillus thiooxidans
cultures
R.M.Gargarello1,2a, D.
Results so far obtained may suggest an indirect uranium reduction, mediated by metabolically produced reducing compounds.
This data is also supported by the fact that an alkaline pH value tends to stabilize reducing compounds, as previously reported by other authors [14] Fig. 1.
As can be seen in Fig. 3, addition of uranium slows down growing rate, but reducing compounds produced in the reaction media are enough for uranium(VI) reduction.
This phenomenon was produced by the so called indirect reduction, mediated by colloidal reducing compounds: polithionates.
Results so far obtained may suggest an indirect uranium reduction, mediated by metabolically produced reducing compounds.
This data is also supported by the fact that an alkaline pH value tends to stabilize reducing compounds, as previously reported by other authors [14] Fig. 1.
As can be seen in Fig. 3, addition of uranium slows down growing rate, but reducing compounds produced in the reaction media are enough for uranium(VI) reduction.
This phenomenon was produced by the so called indirect reduction, mediated by colloidal reducing compounds: polithionates.
Online since: September 2013
Authors: Johny Wahyuadi Soedarsono, Rianti Dewi Sulamet-Ariobimo, Andre Yosi, Eko Mulia Putra, M. Amryl Asy'ari, Adji Kawigraha
The results show that the reduction could not complete.
However that reduction process has not completed yet.
The size do not affect clearly on reduction process.
In this experiment the influence of ore size are not seen clearly due to lack of XRD spectra data for each ore size before roasting.
The reduction occurs after dehydroxylation complete.
However that reduction process has not completed yet.
The size do not affect clearly on reduction process.
In this experiment the influence of ore size are not seen clearly due to lack of XRD spectra data for each ore size before roasting.
The reduction occurs after dehydroxylation complete.
Online since: September 2013
Authors: Ping Wang, Jie Ling Xiao, Zhi Peng Hu, Ting Lin Liu
Considering the urban internal environment, a higher request is put forward on vibration and noise reduction.
Establishing the rail model based on these date and calculating the critical temperature that make the lateral instability of the rail Background As the development of modern society, the shortage of resources and environmental problems have gradually become the key factors that restricting economic and social development .Therefore,the problem of how to utilize the recyclling waste material rationally has become a hot issue.The data shows that the waste tires has reached hundreds of millions of tons over the world each year and is increasing at a rapid pace.
Research on the noise reduction performance of new granular material The test aims to get the noise attenuation of the rail when add new particle damping materials under different vertical excitation.While the new particles is gained from the waste tires.The size of the particle is 3mm and 5mm,which is getted by special process.The vertical excitation is imitated by a hammer with a cetrain quality.In the test,the hammer is free dropped from different height.In order to obtain a more accurate test data,the drop height of free fall respectively take 20cm,40cm and 60cm and the receiving signals of acoustic sensors are layed around the source radius of 60cm,120cm and 180cm,as is shown in fig.1.
(2)The noise reduction value will be reduced as the increase of the distance between the sites and vibration source
Reaserch about Wheel-rail Noise Reduction Technology on speedup train[J].Noise and Vibration Control, 2007,27(1):68-73.
Establishing the rail model based on these date and calculating the critical temperature that make the lateral instability of the rail Background As the development of modern society, the shortage of resources and environmental problems have gradually become the key factors that restricting economic and social development .Therefore,the problem of how to utilize the recyclling waste material rationally has become a hot issue.The data shows that the waste tires has reached hundreds of millions of tons over the world each year and is increasing at a rapid pace.
Research on the noise reduction performance of new granular material The test aims to get the noise attenuation of the rail when add new particle damping materials under different vertical excitation.While the new particles is gained from the waste tires.The size of the particle is 3mm and 5mm,which is getted by special process.The vertical excitation is imitated by a hammer with a cetrain quality.In the test,the hammer is free dropped from different height.In order to obtain a more accurate test data,the drop height of free fall respectively take 20cm,40cm and 60cm and the receiving signals of acoustic sensors are layed around the source radius of 60cm,120cm and 180cm,as is shown in fig.1.
(2)The noise reduction value will be reduced as the increase of the distance between the sites and vibration source
Reaserch about Wheel-rail Noise Reduction Technology on speedup train[J].Noise and Vibration Control, 2007,27(1):68-73.
Online since: November 2013
Authors: Qian Cong, Ji Yue Wang
Hope to get the concave bionic needle which has the best drag reduction effect.
Fig.2 The test device of syringe needle puncture drag test In Fig.2: a -- Setting mechanism of fixture, b – Fixture of simulation skin, c – Simulation skin, d – Syringe needle, e – Transmitter with the pressure measuring element, f –Measuring amplifier, g –Data processing and display unit.
In another word, the bionic needles had drag reduction effects.
The drag reduction mechanism is the same.
Conclusions 1) The concave bionic needles have drag reduction effect.
Fig.2 The test device of syringe needle puncture drag test In Fig.2: a -- Setting mechanism of fixture, b – Fixture of simulation skin, c – Simulation skin, d – Syringe needle, e – Transmitter with the pressure measuring element, f –Measuring amplifier, g –Data processing and display unit.
In another word, the bionic needles had drag reduction effects.
The drag reduction mechanism is the same.
Conclusions 1) The concave bionic needles have drag reduction effect.
Online since: October 2011
Authors: Zulkafli Bin Hassan, Hayder A. Abdulbari, Rosli Bin Mohd Yunus, Wafaa Kamil Mahmood, C Hooi
The experimental set up comprises of one open-ended reservoir tank, a smooth pipe (to eliminate the error associated with the quality of holes formed in a grooved surface), pump and valves, flow meter and pressure sensors, and data logger (Model No. 34000, Data acquisition unit).
The results were used as the point of reference for data analysis of Drag Reduction Percentage (Dr %).
Desired flow rate value was set by controlling it from the valve and the steady state pressure drop data across 1.5m of pipe were recorded.
Reynolds Numbers (Re) were calculated using the data observed from the experimental work (volumetric flow rate, Q).
As data taken from the experimental data, it has been shown from Fig. 6 that a flat geometry gives the most effective on drag reduction.
The results were used as the point of reference for data analysis of Drag Reduction Percentage (Dr %).
Desired flow rate value was set by controlling it from the valve and the steady state pressure drop data across 1.5m of pipe were recorded.
Reynolds Numbers (Re) were calculated using the data observed from the experimental work (volumetric flow rate, Q).
As data taken from the experimental data, it has been shown from Fig. 6 that a flat geometry gives the most effective on drag reduction.
Online since: July 2011
Authors: Qiang Ma, Jun Jie Zheng, De Pi Luo
Thus, the load reduction ditch should be excavated a little wider to obtain greater load reduction efficiency.
Table 2 With different number of geogrid layers (kPa) Table 3 With different location of geogrid (kPa) H (m) 0 layer 1 layer 2 layers 3 layers 4 layers H (m) z=0 m z=0.5 m z=1 m z=1.5 m 4 56 56 56 56 56 4 56 56 56 56 8 99 98 98 98 98 8 98 99 99 99 12 139 138 137 137 137 12 137 139 139 139 16 179 177 176 176 176 16 176 178 179 179 21 228 225 224 224 224 21 225 228 228 228 The data listed in table 2 indicate that the installation of the geogrid layer has certain effect on load reduction, the increase of the number of the geogrid layers has very limited effect on increase of load reduction efficiency.
The distance from the top surface of the load reduction ditch to the geogrid layer is z, the data of vertical earth pressure on the slab of the culvert are listed in table 3.
The data listed in table 3 indicate that the geogrid should be installed 0 m from the top of the load reduction ditch to obtain a load reduction effect.
The data of vertical earth pressures with different plane stiffness of geogrid reinforcement are listed in table 4.
Table 2 With different number of geogrid layers (kPa) Table 3 With different location of geogrid (kPa) H (m) 0 layer 1 layer 2 layers 3 layers 4 layers H (m) z=0 m z=0.5 m z=1 m z=1.5 m 4 56 56 56 56 56 4 56 56 56 56 8 99 98 98 98 98 8 98 99 99 99 12 139 138 137 137 137 12 137 139 139 139 16 179 177 176 176 176 16 176 178 179 179 21 228 225 224 224 224 21 225 228 228 228 The data listed in table 2 indicate that the installation of the geogrid layer has certain effect on load reduction, the increase of the number of the geogrid layers has very limited effect on increase of load reduction efficiency.
The distance from the top surface of the load reduction ditch to the geogrid layer is z, the data of vertical earth pressure on the slab of the culvert are listed in table 3.
The data listed in table 3 indicate that the geogrid should be installed 0 m from the top of the load reduction ditch to obtain a load reduction effect.
The data of vertical earth pressures with different plane stiffness of geogrid reinforcement are listed in table 4.
Online since: May 2011
Authors: Yong Mao Wang
LFDA can preserve both manifold of data and discriminant information.
Dimensionality reduction is the transformation of high-dimensional data into a meaningful representation of reduced dimensionality.
In addition, LPP can only preserve the manifold of data and lose the discriminant information because LPP is an unsupervised dimensionality reduction algorithm.
Dimensionality reduction is performed to solve the problem of dimensionality curse which arises by high dimensional data at the stage of feature extraction.
[9] Masashi Sugiyama: Dimensionality Reduction of Multimodal Labeled Data by Local Fisher Discriminant Analysis.
Dimensionality reduction is the transformation of high-dimensional data into a meaningful representation of reduced dimensionality.
In addition, LPP can only preserve the manifold of data and lose the discriminant information because LPP is an unsupervised dimensionality reduction algorithm.
Dimensionality reduction is performed to solve the problem of dimensionality curse which arises by high dimensional data at the stage of feature extraction.
[9] Masashi Sugiyama: Dimensionality Reduction of Multimodal Labeled Data by Local Fisher Discriminant Analysis.