Microparticles properties

Thus, the effect of the microparticles b to possibly have an effectiveness factor, less than unity, based on microparticle properties, Eq. 3.9,a-3. The overall effectiveness factor then consists of the product of n, and a macroeffcctivcness factor, and the latter b based on macropeUet properties plus the micro effectiveness factor—Eq. 3.941-5. Often the microparticles are sui iently small so that a 1.0 recall from above that there is usually not any micropore diffusional limitations unless these exist for the macropores. 

Stonehouse B (ed) (2002) Encyclopedia of Antarctica and the southern ocean. WUey, Chichester, England Thompson LG, Mosley-Thompson E (1981). Temporal variability of microparticle properties in polar ice sheets. J Volctm Geotherm Res 11 11-27... 

Bevilacqua P, Ferrara G (1996) Comminution of porous materials. Int J Min Proc 44 5 117-131 Heikkila T, Makila E, Ojanen S, Qu H, Louhi-Kultanen M, Riikonen J, Salonen J, Kumar N, Yu Murzin D, Santos HA, Laaksonen T, Peltonen L, Hirvonen J, Lehto V-P (2009) Effect of comminution on microparticle properties of mesoporous silicon and silica materials. In Proceedings of the 12th European symposium on comminution and classification, Espoo, pp 1-17 Heintz AS, Fink MJ, Mitchell BS (2010) Silicon nanoparticles with chemically tailored surfaces. Appl Organometal Chem 24 236-240... 

Physical properties and loading capacity of starch-based microparticles crosslinked with trisodium trimetaphosphate. Journal of Food Engineering, Vol. 92, 3, 0une 2009), pp. (255-260), ISSN 0260-8774... 

Spherical microparticles have been preferred in modem column technology since they form more hMiogeneous, stable and permeable column beds. Irregular microparticles are less expensive and still widely used, largely because in practice, it has not been shorn that their properties are significantly inferior. Particle shape may become more important as the particle size is reduced, and spherical microparticles are considered superior for particle dieuaeters less than 5 micrometers [33]. 

Property Porous Layer Beads Totally Porous Microparticles... 

P Stjarnkvist, I Sjoholm, T Laasko. Biodegradable microspheres. XII. Properties of the crosslinking chains in polyacryl starch microparticles. J Pharm Sci 78 52-56, 1989. 

The effects of cytoplasmic viscosity are widely unexplored. This may be attributed to the relatively difficult measurement methods available. In the cytoplasm, magnetic microparticles were predominantly used to obtain information on viscoelastic properties [125-127]. Clearly, the use of magnetic microparticles demands the use of very expensive equipment the observation of the particles is time-consuming, thus limiting temporal resolution, and the interaction between the particles and the cellular environment may also cause measurement artifacts. 

Bio-nanomaterials are significantly different from traditional larger biomaterials (e g., implants or microparticles as mentioned earlier) in terms of their physical and biological properties. Due to their new set of biological and physical properties, bio-nanomaterials also show potential for use as therapeutics and in dmg delivery systems. For instance, Na and coworkers in 2007 used a bio-nanomaterial, heparin/... 

Figure 42 shows the temperatures measured by two-color pyrometry for step changes in temperature compared with the true temperature and calculated temperatures based on the response characteristics of the detectors (time constant = 0.311 s). The response speed of the detectors in this case was too slow to follow the actual temperature decrease, but the temperature rise is reasonably well detected. Spjut and Bolsaitis reported that two-color temperatures are unreliable when the optical properties of the microparticle change during the experiment, but they showed that single-wavelength temperatures can yield consistent results and, with some caveats, are adequate for particle temperature measurement. 

Frederiksen H.K., Kristensen H.G., and Pedersen M., Solid lipid microparticle formulations of the pyrethroid gamma-cyhalothrin-incompatibility of the lipid and the pyrethroid and biological properties of the formulations, J. Control. Rel, 86, 243, 2003. 

Oner, L. and Groves, M.J. (1993b). Properties of human albumin microparticles prepared by a chilled cross-linking technique. J. Pharm. Pharmacol., 45, 866-870. 

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