نتایج جستجو برای: voltage gradient

تعداد نتایج: 232620  

2014
C. Buccella C. Cecati M. G. Cimoroni H.-C. Chen K.-Y. Chen M. S. Hamad M. I. Masoud K. H. Ahmed B. W. Williams Millnitz dos Santos J. C. da Cunha

An input-series output-parallel (ISOP) system, in which multiple converter modules are connected in series at the input sides and parallel at the output side, is very suitable for high input-voltage, low output-voltage, and high output-current applications. Input-voltage sharing (IVS) and output-current sharing of the constituent modules among the ISOP system must be ensured. The existing IVS c...

2011
Thomas Keutel Xinming Zhao Olfa Kanoun

The monitoring of overhead power line networks is becoming increasingly more challenging because of the power distribution of renewable energy resources. The use of ambient energy is important for a maintenance free supply of a wireless monitoring network. Generally, the electromagnetic field resulting from the AC current and the electrostatic field resulting from the AC voltage can be used. Ne...

A Ghorbanpour Arani, A Hosseinpour A.A Ghorbanpour Arani B Rousta Navi M Mohammadimehr, S Niknejad

In this paper, the pull-in instability of piezoelectric polymeric nanocomposite plates reinforced by functionally graded single-walled carbon nanotubes (FG-SWCNTs) based on modified strain gradient theory (MSGT) is investigated. Various types of SWCNTs are distributed in piezoelectric polymeric plate and also surface stress effect is considered in this research. The piezoelectric polymeric nano...

2001
M. A. Holdaway

The alignment of the tapered illumination with the antenna's primary dish will not be perfect, and for ALMA has been speci ed as having an rms error of 0.1 dish radii at all frequencies, and the resulting image errors are therefore independent of frequency. If uncorrected, simulations indicate the e ects of this illumination o set will dominate both pointing and surface errors for ALMA's wide e...

Journal: :Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering 2004
Krishna R Reddy Richard E Saichek

Electrokinetically enhanced in-situ flushing using surfactants has the potential to remove polycyclic aromatic hydrocarbons (PAHs) from low permeability clay soils; however, previous research has shown that the applied electric potential produces complex physical, chemical, and electrochemical changes within clay soils that affect mass transfer and overall efficiency. This article presents the ...

Journal: :Analytical chemistry 1996
C Yan R Dadoo R N Zare D J Rakestraw D S Anex

In analogy to pressure-driven gradient techniques in high-performance liquid chromatography, a system has been developed for delivering electroosmotically driven solvent gradients for capillary electrochromatography (CEC). Dynamic gradients with submicroliter per minute flow rates are generated by merging two electroosmotic flows that are regulated by computer-controlled voltages. These flows a...

2013
Mohammed Hussain Essa Nuhu Dalhat Mu'azu Salihu Lukman Alaadin Bukhari

In this study, an integrated in situ remediation technique which couples electrokinetics with adsorption, using locally produced granular activated carbon from date palm pits in the treatment zones that are installed directly to bracket the contaminated soils at bench-scale, is investigated. Natural saline-sodic clay soil, spiked with contaminant mixture (kerosene, phenol, Cr, Cd, Cu, Zn, Pb, a...

Journal: :Journal of Membrane Science 2021

The practical energy required for water dissociation reaction in bipolar membrane (BPM) is still substantially higher compared to the thermodynamic equivalent. This determined by voltage, consisting of (1) potential and (2) undesired voltage losses. Since pH gradient over BPM affects both components, this work, leveraged decrease BPM-voltage. We investigate effect four flow orientations: 1) co-...

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