Neither subdivision

Possible. Cases are put in this category when the relationship between the drug and the clinicopathological findings can be neither confirmed nor denied. There are three subdivisions in this category. 

Corresponding to the different use of the criteria, a subdivision into two groups appears to be useful. Experimental criteria are needed when the kinetics of the reaction under consideration are still unknown, i.e. neither the type of rate law nor the intrinsic values of the kinetic parameters have yet been identified. This may be the case during an early stage of a laboratory kinetic study when a new reaction is analyzed for the first time. Experimental criteria in general contain only directly observable quantities, i.e. the measured effective rate of reaction as well as some (effective) physical properties of the catalyst and the reaction mixture (R, Z>c, Ac, etc.). Therefore, these can be easily applied. However, experimental criteria suffer from the disadvantage to be sometimes less conservative when more complex kinetics prevail. 

I shall resort to periodization, to subdivisions into decades.1 It has the advantage of simplicity, and the further merit of being neither too coarse nor too fine-grained. 

An alternative subdivision of colloids which has been widely used in the past is into lyophobic (or hydrophobic, if the dispersion medium is water) and ly op hi lie (hydrophilic, in water) colloids, depending on whether the particles can be described in the former ease as solvent hating or in the latter case as solvent loving . These characteristics are deduced from the conditions required to produce these colloids and from the means available for their redispersion after flocculation or coagulation. It will become apparent later that, while this subdivision has many useful aspects, it is neither entirely logical nor sufficiently all-embracing, and we shall make only limited use of it. 

It is important to note that if the total energy is a state function, as explained above, this is not the case for any of its subdivisions. Neither T nor li is a state function because the knowledge of only one does not allow one to say something about the state of the system. 

A classification by chemical type is given in Table 1. It is neither rigorous nor complete and some materials could appear in more than one of these classifications. Polyethylene waxes [9002-88-4], for example, could be considered both as synthetic waxes and as polyolefins. The broad classes of release materials are listed in the chemical class column, and the principal types in the chemical subdivision column, with a single example in the specific examples column. No attempt has been made to incorporate actual commercial products as many are mixtures and some are of proprietary composition. For example, metallic soaps are often used in combination with hydrocarbon waxes to produce finely dispersed suspensions. 

As stated earlier, colloids represent a state of subdivision of matter. The matter, finety divided, is uniformly distributed in a continuous medium. However, the dispersed particles are neither so large that they separate on standing, nor so small that they can be said to be in solution. This means that the colloidal state is an intermediate state between a suspension and a true solution. 

Neither Fleischer (1915-1922) nor Brotherus (1925) provided subdivisions of the Amblystegiaceae above the genus level. Their generic subdivisions were clearly based on a few, easily observable characters, such as leaf orientation and shape, development of the vegetative leaf costa and leaf border, leaf lamina cell shape, the presence or absence of paraphyllia, and the habitat of the species (cf., Brotherus, 1925). 

---