Dynamic image analysis

Dynamic image analysis systems, 18 147 Dynamic Kerr effect (DKE), 17 454 Dynamic light scattering (DLS), 20 381 in molecular weight determination,... 

Figure 13.5 Binary digitized images of particles obtained by dynamic image analysis (courtesy of Sympatec GmbH).

Image analysis provides a method where size distribution is obtained together with valuable shape data from essentially two-dimensional objects. Dynamic image analysis from randomly orientating particles of large numbers of two-dimensional objects offsets the influence of having only a two-dimensional observation, to some degree. 

Particle size analysis - Photon correlation spectroscopy Particle size analysis - Image Analysis methods - Part 1 Static image analysis methods (in preparation) Particle size analysis - Image Analysis methods - Part 2 Dynamic image analysis methods (in preparation)... 

Okada, Y. Chen, Z. Eldridge, E. L. Central respiratory chemoreception in the developing rat brainstem dynamic imaging analysis with fluorescent voltage-sensitive dye. Keio Univ. Symp. Life Sci. Med. 1999, 2, 410-415. 

Weiner, B. B., Tschamuter, W. W., Karasikov, N., Improvements in Accuracy and Speed Using the Time-of-Transition Method and Dynamic Image Analysis for Particle Sizing, in Particle Size Distribution III, Ed. Provder, T., ACS Symp. Series 693, American Chemical Society, Washington D.C., 1998, Chpt.8, pp.88-102. 

NMR is an incredibly versatile tool that can be used for a wide array of applications, including determination of molecular structure, monitoring of molecular dynamics, chemical analysis, and imaging. NMR has found broad application in the food science and food processing areas (Belton et al., 1993, 1995, 1999 Colquhoun and Goodfellow, 1994 Eads, 1999 Gil et al., 1996 Hills, 1998 O Brien, 1992 Schmidt et al., 1996 Webb et al., 1995, 2001). The ability of NMR to quantify food properties and their spatiotemporal variation in a nondestructive, noninvasive manner is especially useful. In turn, these properties can then be related to the safety, stability, and quality of a food (Eads, 1999). Because food materials are transparent to the radio frequency electromagnetic radiation required in an NMR experiment, NMR can be used to probe virtually any type of food sample, from liquids, such as beverages, oils, and broth, to semisolids, such as cheese, mayonnaise, and bread, to solids, such as flour, powdered drink mixes, and potato chips. 

Figure 3.25. In situ catalysis (a) fresh VPO catalyst (b) dynamic real-time formation of atomic scale catalyst restructuring in butane after 2 min at 400 °C (c) enlarged image of (b) showing two sets of partial dislocations and (d) dynamic image of two sets of extended defects along symmetry-related (201) in (010) VPO after reduction in butane for several hours (diffraction contrast). The inset shows the defect nucleation near the surface. Careful defect analysis shows them to be formed by novel glide shear, (e) One set of the defects in high resolution (f) and (g) show diffraction contrast images of defects in 201 and 201. (After Gai et al, Science, 1995 and 1997 Acta Cryst. B 53 346.)...

Very recently, experiments using new techniques have been performed by Lodewyckx et al. [4], X-ray microtomography coupled with image analysis allows visualising dynamic adsorption of organic vapour and water vapour on activated carbon. Figure 17.3 in [4] shows profiles inside the bed at different times. It is remarkable that the fronts seem to be of constant pattern shape. 

S. Muerza, H. Berthiaux, S. Massol-Chaudeur, G. Thomas, A dynamic study of static mixing using on-line image analysis, Powder Technol. 128 (2002) 195-204. 

It has to be noted that the measurement of the dynamic expansion can be also obtained using an infrared camera and a image analysis. This approach has been recently developed and first results are presented in Chapter 6 of this book.39... 

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