Results 251 to 260 of about 3,250,523 (299)

Continuous-Flow Biomolecule and Cell Concentrator by Ion Concentration Polarization

Analytical Chemistry, 2011
We present a novel continuous-flow nanofluidic biomolecule/cell concentrator, utilizing the ion concentration polarization (ICP) phenomenon. The device has one main microchannel which bifurcates into two channels, one for a narrow, concentrated stream and the other for a wider but target-free stream.
Rhokyun, Kwak, Sung Jae, Kim, Jongyoon, Han   +2 more
openaire   +2 more sources

Concentration Polarization in Electroosmotic Pumps

ECS Transactions, 2009
Electroosmotic (EO) pumps can generate relatively high pressure and flow rate using no moving parts and small package volumes. Pumps with one micron (and smaller) pore diameters are promising for applications requiring high flow rate per power, such as drug delivery systems.
Matthew Suss, Lewis A. Marshall, Thomas A. Zangle, Juan G. Santiago   +3 more
openaire   +1 more source

Concentration Polarization in the Baromembrane Process

International Journal of Polymeric Materials, 1998
Abstract Equations correlating the flows of the components and concentration polarization in baromembrane process are developed and discussed.
Yu. G. Medvedevskikh, O. J. Bilinskiy, A. A. Berlin, A. A. Turovskiy, G. E. Zaikov   +4 more
openaire   +1 more source

Concentration polarization in pipe ultrafiltration

Journal of Engineering Physics and Thermophysics, 1997
A study is carried out to investigate unsteady concentration polarization in laminar ultrafiltration in a cylindrical channel as a function of the selective properties of the membrane.
V. I. Baikov, O. M. Karatai
openaire   +1 more source

Concentration Polarization of a Polymer Electrolyte

Journal of The Electrochemical Society, 2002
In this study, the salt concentration in a concentrated binary polymer electrolyte was measured in situ by means of confocal Raman spectroscopy during galvanostatic polarization experiments. The electrolyte studied was 0.8 M lithium bis(trifluoromethanesulfone)imide in a copolymer of ethylene- and propylene oxide at 25degreesC.
P. Georén, J. Adebahr, P. Jacobsson, G. Lindbergh   +3 more
openaire   +1 more source

Overview of concentration polarization in ultrafiltration

Desalination, 1980
Abstract Concentration polarization mechanisms are briefly outlined. A morphological analysis of ways to prevent the detrimental influence on membrane fluxes is given. The potentials of these different approaches are analysed and some examples of module designs resulting from the various approaches are given.
S. Bruin, A. Kikkert, J.A.G. Weldring, J. Hiddink   +3 more
openaire   +1 more source

Concentration Polarization and Diffusion

2009
The previous chapter has considered the electrode kinetics of corrosion processes under the control of activation polarization. Most of the examples in Chapter 7 were for metals corroding in acid solutions, in which the cathodic reaction is the evolution of hydrogen, a reaction which usually proceeds under activation control.
openaire   +1 more source

On the concentration quenching of fluorescence polarization

1973
Applying Forster's "excitation master equations" which describe the motion of the excitation energy among the molecules of a solution, an expression is found for the probability Plk that the excitation terminates on the same molecule which served as the absorber of the incident photon.
A. Kawski, J. Kamiński
openaire   +2 more sources

Concentration polarization in crossflow microfiltration

Journal of Membrane Science, 1989
Abstract Crossflow microfiltration (CMF) is increasingly used for the separation and concentration of suspended microparticles, bacteria and emulsion droplets. The suspensions to be filtered flow parallel to the membrane. Thereby the thickness of a filtercake is limited, so that a constant filtrate flux can be reached over a long period of time ...
G. Schulz, S. Ripperger
openaire   +1 more source

Concentration polarization in gas permeation

Journal of Membrane Science, 1998
Abstract The aim of this article is to show the importance of concentration polarization effects in the separation of gas–vapor mixtures using membranes. In the experimental part of this work, gas mixture measurements are conducted with a specially designed test cell.
O. Lüdtke, R.-D. Behling, K. Ohlrogge
openaire   +1 more source