Physiochemical interactions

Walker, S. G., Flemming, C.A., Ferris, F.G., Beveridge, T.J. Bailey, G. W. (1989). Physiochemical interaction of Escherichia coli cell envelopes and Bacillus subtilis cell walls with two clays and ability of the composite to immobilize heavy metals from solution. Applied and Environmental Microbiology, 55, 2976-84. 

The nutrient balance is not the only factor affecting cell biochemistry, as there are many physiochemical interactions in a culture. The need to scale up cell cultures increases the importance of understanding the effect of such factors as agitation and mixing, and of how oxygen should be supplied in the least damaging way. 

Drug action is the physiochemical interaction between the drug molecule and molecules in the body that alters a physiological process of the body in one of three ways. 

Corrosion is the destruction of a substance—usually a metal or its properties—that occurs because of a reaction with its surroundings (environment), such as the physiochemical interaction between a metal and its environment, which results in changes in the properties of the metal. Corrosion may often lead to impairment of the function of the metal, the environment, or the technical system (Ahmad et al. 2011 Ropital 2009). 

It is important to note that drug interaction by this definition is a biological effect. A drug interaction may occur without an in vitro physiochemical interaction between the two drugs, and conversely a physicochemical interaction does not necessarily imply a biological interaction. 

The biodegradable HP-a-CDs/PEO polyrotaxane could also be useful in the fabrication of blood-contacting devices based on the intracellular metabolism of platelets and physiochemical interaction of the polyrotaxanes with the plasma membrane. For instance, based on a cellular response study, HP-a-CDs/PEO... 

Depending on the types of clay and polymer, their physiochemical interactions, and the melt-mixing conditions, clays may not be fully dispersed, forming an agglomerated tactoid. In this case, clays are dispersed as a phase segregated and separated from the polymer matrix, and the properties of the composites are in the same range as in traditional microcomposites [1]. 

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