Vascular resistance recent results showing the sheath flow surrounding the plug flow in a vessel, the sheath flow size is not neglectible in the real blood flow velocity profile in a vessel. The velocity profile is directly linked to flow resistance in a vessel. The viscosity variations, according to Thurston, are also balanced by the sheath flow size around the plug flow. The secondary regulators of vascular resistance, after vessel radius, is the sheath flow size and its viscosity. Thurston, as well, shows that the resistance R is constant, where, for a defined vessel radius, the value η(δ)/δ is constant in the
The Resistance to Theory aesthetic approach to literary studies and those who uphold an historical approach both find theory inconvenient and challenging. They are the polemical opponents of theory. As theory is as much a linguistic construct as literature, it falls prey to the same problematics of literary language. De Man states that the resistance to theory may be "a built-in constituent of its discourse." The real debate of literary theory is henceforth "not with its polemical opponents but rather with its own methodological assumptions and possibilities." (p. 358) This is because "the resistance to theory is a resistance to the use of language