Critical theory influences

The purpose of this chapter is to provide a description of the different types of polymeric matrices existing in the market and how the properties of the principal polymers employed in their manufacture affect the drug release. Furthermore, the main concepts of percolation theory are exposed in order to explain the critical points influencing the drug release from matrix systems. 

Some criticisms of the importance of the electronic theory influencing the intrinsic adhesion have already been raised and other comments on its general... 

Next, the German Adolph Eick (1829-1901), stimulated by Graham s researches, sought to turn diffusion into a properly quantitative concept and formulated the law named after him, relating the rate of diflfusion to the steepness of the concentration gradient (Eick 1855), and confirmed his law by measurements of diflfusion in liquids. In a critical examination of the influence of this celebrated piece of theory, Tyrrell... 

Regardless of any theory, there is firm exptl proof that the particle size of a granular expl affects its steady detonation properties as well as its initiation behavior. In particular, the detonation velocity as well as the critical diameters of many granular expls depend on their particle size. The shock sensitivity of granular expls is also influenced by particle size. These effects will now be described Steady Detonation. 

Simha [53] made the first attempts to model the transition from a dilute to a concentrated solution. He assumed that in the range from lscaling laws a theory has been developed which allows for the prediction of the influence of Mw c and the solvent power on the screening length [54,55]. This theory is founded on the presumption that above a critical concentration, c, the coils overlap and interpenetrate. Furthermore it is assumed that in a thermody-... 

Borishansky, V. M., 1961, Allowing for the Influence of Pressure on the Heat Transfer and Critical Thermal Loads during Boiling in Accordance with the Theory of Thermodynamic Similarity, Voprosy Teplootdachi i gidravliki Dvukhfaznykh Sred, Gosenergoizdet, Moscow. (2)... 

For transporting foam, the critical capillary pressure is reduced as lamellae thin under the influence of both capillary suction and stretching by the pore walls. For a given gas superficial velocity, foam cannot exist if the capillary pressure and the pore-body to pore-throat radii ratio exceed a critical value. The dynamic foam stability theory introduced here proves to be in good agreement with direct measurements of the critical capillary pressure in high permeability sandpacks. 

Part IV of this article outlines a description of the processes involved in cleavage of a single metal-carbon bond, and puts forward a theory of the influences of electron count, and of configuration interaction, on metal-carbon bond stability. Finally, in Part V, I attempt a critical appraisal of the method adopted and the results obtained. 

One of the first people to apply science to medicine was the ancient Greek physician Hippocrates (ca. 460-377 b.c.e.). Influenced by the idea that the world is composed of four substances—earth, air, fire, and water—as taught by the Greek philosopher Empedocles (ca. 495-435 b.c.e.), Hippocrates proposed that four fluids are critical in determining a person s state of health. These fluids, known as humors (from a Latin term for moisture), were called blood, yellow bile, black bile, and phlegm. According to Hippocrates, an imbalance in these humors caused disease. Later, people associated a specific temperament or personality with these humors, a theory that was one of the earliest attempts to explain moods and emotions. Blood, for example, was associated with an optimistic disposition, while black bile corresponded to depression. 

In spite of the success of the BET theory, some of the assumptions upon which it is founded are not above criticism. One questionable assumption is that of an energetically homogeneous surface, that is, all the adsorption sites are energetically identical. Further, the BET model ignores the influence of lateral adsorbate interactions. 

Constructivism is linked to the philosophical-epistemological theory of (scientific) relativism or empiricism, which is in contrast to another theory, that of (scientific) realism or objectivism or positivism. Realists believe logical analysis applied to objective observations can be used to discover the truth about the world we live in. Relativists accept the existence of a real world, but question whether this world is knowable . They note that observations, and the choice of observations to be made, are influenced by the beliefs, theories, hypotheses, and background of the individual who makes them (6). Realism and empiricism must be considered as two extremes on a continuum. It is certain that in its early years (surely until, say, the beginning of the twentieth century), science was closer to relativism, but as time passed, we came closer to a realist state. Note that are there are those who argue that philosophical and educational constructivisms are intertwined (15, 16), and those who are against (IT) and critical (18) of the way these philosophical theories are linked to education theories. 

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