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
What Is to Be Done? what Lenin’s real views were". Therefore, Lih argues, the word спонтанность, when translated as "spontaneity", distorts his views and has different contextual connotations; how конспирация does not mean "conspiracy", but "the rules and procedures needed for an underground organisation to survive"; тред-юнионизм does not mean "trade unionism", but non-revolutionary "only trade unionism"; and революционер по профессии should not be translated as "professional revolutionary". What Is to Be Done? What Is To Be Done? Burning Questions of Our Movement () is a political pamphlet written by the Russian revolutionary Vladimir Lenin (credited as N. Lenin) in 1901 and published in 1902.