Interactions depletion

Figure 26.4 Abiotic and biotic interactions leading to the indirect toxicity of chlorofluorocarbons to amphibians. Atmospheric release of chlorofluorocarbons causes the depletion of the stratospheric ozone layer (abiotic-abiotic interaction). Depleted ozone allows for increased penetration of UV-B radiation (abiotic-abiotic interaction). UV-B radiation alone and in combination with fungus (abiotic-biotic interaction) causes increased mortality of amphibian embryos.

Non-DLVO colloidal interactions excluded volumes, undulation interactions, depletion forces and many-body effects... 

Interactions. Depletion of body potassium from therapy with diuretics or with adrenal steroids may lead to cardiac arrhythmias (as may be anticipated from its action on Na, K -ATPase, above). Verapamil,... 

Chemical agents enhance and inhibit chemical carcinogenesis by a variety of mechamisms (Table I). These Include modification of carcinogen availability, bioactivation, reactive interactions, depletion of cytoprotective cellular nucleophiles, and elimination processes. 

For non-interacting depletants P is simply given by Van t Hoff s law = tijkT or... 

For non-interacting depletants such as penetrable hard spheres the f/s and P s in the phase coexistence equations (3.41) and (3.42) can be written such that binodal colloid concentrations follow from solving one equation in a single unknown [28]. We rewrite (3.38) and (3.39) as... 

As we noted in Chap. 4, expression (6.33) just like (4.5) only holds for noninteracting depletants. The general expression for the semi-grand potential for hard spherocyhnders plus interacting depletants is... 

Build an understanding of the importance of the interparticle interactions that control colloidal dispersion and aggregation and learn about the origins of electrostatic interactions, depletion forces, and other steric interactions. 

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