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Field and flow programming in frit-inlet asymmetrical flow field-flow fractionation

Journal of Chromatography A, 2002
The separation of wide molecular mass (Mr) ranges of macromolecules using frit inlet asymmetrical flow field-flow fractionation (FI-AFlFFF) has been improved by implementing a combination of field and flow programming. In this first implementation, field strength (governed by the cross flow-rate through the membrane-covered accumulation wall) is ...
Myeong Hee, Moon   +3 more
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Dual-field and flow-programmed lift hyperlayer field-flow fractionation

Analytical Chemistry, 1992
Field and flow programming and their combination, dual programming, are shown to extend the particle size range to which a single flow/hyperlayer field-flow fractionation (FFF) run is applicable to approximately 1-50 microns. The rationale for programming flow/hyperlayer FFF (or other forms of lift hyperlayer FFF) is to expand the diameter range of ...
S K, Ratanathanawongs, J C, Giddings
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On the no-field method for void time determination in flow field-flow fractionation

Journal of Chromatography A, 2011
Elution time measurements of colloidal particles injected in a symmetrical flow field-flow fractionation (flow FFF) system when the inlet and outlet cross-flow connections are closed have been performed. This no-field method has been proposed earlier for void time (and void volume) determination in flow FFF Giddings et al. (1977).
Michel, Martin, Mauricio, Hoyos
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Field-Flow Fractionation

2010
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PASTI, Luisa   +2 more
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Flow Field of a Bunsen Flame

The Physics of Fluids, 1958
The flow field of a two-dimensional Bunsen flame is examined by approximating the zone of combustion by a surface of discontinuity across which the density drops and normal velocity increases. Even though the flow of unburned gases is potential, the flow of the burned gases is always rotational and is therefore not amenable to complete analysis ...
Uberoi, Mahinder S.   +2 more
openaire   +3 more sources

Field-Flow Fractionation

TrAC Trends in Analytical Chemistry, 1994
Field-flow fractionation (FFF) is a family of instrumental techniques that separates and characterizes macromolecules, colloids, and particles (macromaterials) on an analytical scale (Colfen and Antonietti, 2000; Schimpf et al., 2000). As illustrated in Fig. 1, the FFF channel has a ribbon-shaped geometry, typically with length 30-50 cm, breadth 1-3 cm,
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Field-Flow Fractionation

Separation Science and Technology, 1976
Abstract Field-flow fractionation (FFF) is a separation method first described in 1966 (I). FFF is an elution technique, like chromatography, and the experimental sequence of pump, column, detector, and fraction collector is much like that used in chromatographic operations (2-4).
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Field-flow fractionation and biotechnology

Trends in Biotechnology, 2005
The gentle separation mechanism has made field-flow fractionation particularly suited to samples of biotechnological interest, from proteins and nucleic acids to viruses, subcellular units and whole cells. Recent progress in field-flow fractionation technology, as well as the development of coupled techniques combining field-flow fractionation ...
RESCHIGLIAN, PIERLUIGI   +4 more
openaire   +2 more sources

Shadows and shading flow fields

Proceedings CVPR IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 1996
Many presume that parsing the shadows out of an image is a high-level task, because of the global nature of the shadow formation process. But shape-from-shading algorithms are low-level, in the sense that they seek solutions (surface normals or depth values) directly from image intensities.
Pierre Breton, Steven W. Zucker
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On unified optical flow field

Pattern Recognition, 1991
Abstract A new approach to motion analysis from a sequence of stereo images has been developed recently (C. Q. Shu and Y. Q. Shi, A new approach to motion analysis from a sequence of stereo images, Technical Report No. 18, Electronic Imaging Laboratory, Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ,
Chang-Qing Shu, Yun Q. Shi 0001
openaire   +1 more source

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