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Online since: June 2014
Authors: Ye Sun
Study on SO2, NO removal from flue gas using an aqueous NaClO2 solution with oxidation reduction potential and pH control SUN YE School of Chemistry and Environment, Beihang University, Beijing 100191, China sunye021@163.com Keywords: Removal; Nitric oxide; Sulfur oxide; Sodium chlorite; ORP; pH Abstract.
Conventionally, though the current techniques involve wet limestone processes, selective catalytic reduction, etc., which are widely used processes and efficient for each pollutant, each pollution control device is at high cost and space requirement.
Oxidation reduction potential(ORP) has been proven to be economical and an effective technique for process control in many wastewater and WFGD treatment systems[13-15].
The R2, p- and F-values reflect the goodness of fit of each of the relationships to the data.
Online since: June 2010
Authors: Yaron Paz
The data for this Figure was collected by using SciFinder as a database source.
In the following part the various factors will be analyzed, based on the partial data that was gathered so far.
[based on data from ref.[34]]. 3.2.3 Domain size.
The amount of data on the effect of temperature on the efficiency of composite photocatalysts is quite meager.
The experimental data on humidity effects comparing bare titanium dioxide to composite titanium dioxide are not too many.
Online since: May 2016
Authors: H.F. Wang, J.B. Wang
Data acquisition agent is in charge of dynamic data information acquisition.
Data processing agent is in charge of the data analysis, filtering and amplification.
Data show agent is responsible for the processed data and graphic images, and timely appear in front of the user.
The data was collected by data acquisition agent form the pressure and displacement sensors.
Finally the data result and figure were show by data show agent in a data display interface.
Online since: March 2015
Authors: Bożena Łosiewicz
The reduction in the amount of the metal ions adsorbed on the particles is the source of surface interactions responsible for the process of their being built-in.
Comparison of the experimental (full lines) and data obtained using corrected model (dotted lines) at various current density vaules at w = 500 rev min-1 for the Ni-PTFE composite electrocoatings [23].
Comparison of experimental, theoretical and data taking into consideration the effect of the bath stirring for the percentage volume of participation, av, of TiO2 particles in the Ni-P+TiO2 coating as a function of the concentration of TiO2 particles in suspension bath, Cv, at Jc = 13 A dm-2 using the stirring rate of r = 600 rpm [24].
The analysis of the literature data shows that only a few studies examine the role of the hydrodynamic conditions in the formation of composite coatings, while the conditions of bath stirring are responsible for the transportation of the particles towards the surface of the cathode and for their homogeneous distribution throughout the whole suspension [23-27].
The reduction of metal ions adsorbed on particles is the source of surface interactions responsible for the process of their building-in.
Online since: January 2012
Authors: René Boel, Mohammad Moradzadeh
Communication The availability of on-line synchronized Phasor Measurement Units (PMUs) as well as reliable high-speed communication networks enables Wide-Area Monitoring and Control (WAMC) systems [16-17] which complement already existing classical SCADA/EMS Supervisory Control And Data Acquisition/Energy Management System) platforms.
The parameters of such an equivalent model should be determined using measurements data taken at interconnections of two sub-systems.
Roughly speaking, the construction of the dynamic equivalent can be accomplished using reduction-based and identification-based approaches [21].
Reduction-Based Approaches.
Furthermore, advanced control theories e.g. model predictive control etc. call for dynamic model-based equivalents whose parameters, to be determined with least required measurements data taken at interconnections, can reflect the changes in the external network (over the finite control/prediction horizons ahead) [27].
Online since: December 2006
Authors: Min Wu, Mao Zeng Xu
The researchers concluded that in situations where plants adopting the JIT operations could capitalize upon physical plant space square meter reduction, a JIT system would virtually always be preferable to an EOQ system[3].
However, JIT purchasing is not always successful even if the plants adopting JIT operations can capitalize upon physical plant space reduction[4].
This study shows that it is still possible for the EOQ system to be more cost effective than the JIT purchasing system even when a) the JIT operation can experience physical plant space reduction; and b) an unfavorable assumption is made against the EOQ system.
The data for this case study were collected by interviewing the overseas investment manager, the financial manager, the production manager and the customer service supervisor of the cement division of a supplier.
By expanding the classical EOQ model, conducting a case study and a survey in the RMC industry in Singapore, this study suggests that it is still possible for the EOQ purchasing system to be more cost effective than the JIT purchasing system, even when JIT operation can capitalize on inventory physical plant space reduction.
Online since: March 2010
Authors: Gerardo T. Martinez, Marcelo Videa, Genaro Zavala
This implies the reduction of the bit size, and in consequence, the use of materials with suitable magnetic properties.
Topographical characterization of the electrodeposited particles is presented, as a basis for further magnetic characterization and consideration as a suitable material for magnetic data storage.
For low intensity current pulses, the rate of charge transfer will be in general slow except in certain active places, like scratches, that allow the reduction and nucleation of the Ni atoms.
On the other hand, for the case of high intensity current pulses, the polarization of the electrode may favor the Hydrogen Evolution Reaction (HER) which is known to compete with the Ni reduction [11].
The different distribution of the deposits when a low current pulse or a high current pulse, which involves competition between the Nickel reduction and the HER, suggest a means of controlling the distribution of the nanoparticles in the deposit.
Online since: August 2013
Authors: Wei Rao, Ding Guo Li, Hong Chun Yan
The reduction of the CoO and FeO content is accompanied by a overall reduction of their grain sizes, from 21.3 nm at Tcal =400℃ to 8.4 nm at Tcal =800℃.
This is a consequence of the reduction of the amount of CoO and FeO phases, which reduces their antiferromagnetic contribution to the hysteresis loops, with a corresponding dominance of the magnetic contribution of the CoFe2O4 phase.
The presence of CoO and FeO caused a shift of the magnetic hysteresis cycles and a reduction of their coercivity and remanence ratio as compared to the bulk CoFe2O4.
New York:Wiley(1994) [11] Powder Diffraction File, Joint Committee on Powder Diffraction Standards, International Centre for Diffraction Data.
Online since: January 2011
Authors: Chen Huang, Chen Long, Da Chong Wang
In practical control system,output torque of motor may be represented as , (12) where,Km is torsional stiffness coefficient of motor,G is reduction ratio of motor reduction gear.
(18) where,Mr is equivalent mass of reduction gear,pinion and rack.Br is equivalent damping coefficient of reduction gear,pinion and rack.Kr is equivalent stiffness of pinion,tire and rack.
Simulation and results analysis To the above-mentioned eps model,configuring corresponding sensor 1-6 for six state variables respectively,data processing and iterative analysis is carried out by matlab,fault-tolerant feedback control matrix is obtained.Substituting the above feedback control matrix in eps control system,unit step response of assisted motor output torque to steering torque acting on steering wheel is obtained in the situation of normality and inefficiency.The simulation results are shown in Fig. 3-Fig. 8.
Online since: April 2006
Authors: Jian Yi Lin, J. Ding, T. White, B.H. Liu, Z.L. Dong, Zeng Yong Zhong
Introduction Fe-based magnetic nanocomposites are promising candidates for many applications, such as data storage, catalysts and biomedical diagnosis and pathological treatments.
We investigated the effect of the starting precursor on the mechanochemical reduction process and the morphology of Fe nanoparticles as well as the morphology of carbon nanostructures. 2.
To prepare MgO/Fe nanocomposites, the MX and MA precursors were milled together with Mg powder (Mg as the reduction agent for the displacement reaction of Fe2O3 + 3Mg = 2Fe + 3 MgO) for 24 hours with a ratio of ball to powder of 10:1.
The synthesis of Fe/NaCl nanocomposites was carried out by mechanical milling of the mixture of FeCl3, NaCl and metallic sodium Na (Na as the reduction agent for the reaction of 3Na + FeCl3 = 3NaCl + Fe) for 24 hours with a ball to powder ratio of 6:1.
Fig.1 Mossbauer spectra of (a) oxide precursor MA (80K), (b) the Fe/MgO nanocomposite derived from the precursor MX (298K) and (c) Fe/MgO nanocomposite derived from the precursor MA (298K) (I-α-MgFe2O4 II-Fe0; IIIsuperparamagnetic Fe0 or as-reduced iron oxides; IVparamagentic Fe3+ ) After the mechanochemical reduction, XRD analysis (Fig.2) indicated the formation of metallic bcc-Fe phase in both MX and MA nanocomposites.
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