In this paper we propose a novel high resolution scheme for scalar nonlinear hyperbolic conservation laws. The aim of high resolution schemes is to provide at least second order accuracy in smooth regions and produce sharp solutions near the discontinuities. We prove that the proposed scheme that is derived by utilizing an appropriate flux limiter is nonlinear stable in the sense of total varia...

We introduce equivariant Burnside groups, new invariants in birational geometry, generalizing symbols groups for actions of finite abelian due to Kontsevich, Pestun, and the second author, study their properties. establish a specialization map type smooth algebraic variety with an action group.

Adenylyl cyclases are a nine-member family of differentially regulated enzymes responsible for the synthesis of cAMP. cAMP is an important second messenger that contributes to the regulation of airway smooth muscle tone. However, little is known regarding the expression and regulation of adenylyl cyclase isoforms in airway smooth muscle cells. Nondegenerate specific primers were designed for al...

background: neurotologic signs and symptoms, especially vestibular symptoms are common in migrainous patients. involvement of the visual system in migrainures has received a great deal of attention in recent years, but the oculomotor part of the visual system has been largely ignored. the goal of this study was to investigate some parts of the central vestibular system using the oculomotor part...

The contribution deals with timestepping schemes for nonsmooth dynamical systems. Traditionally, these schemes are locally of integration order one, both in smooth and nonsmooth periods. This is inefficient for applications with few events like circuit breakers, valve trains or slider-crank mechanisms. To improve the behavior during smooth episodes, we start activities twofold. First, we includ...

AIM To find if tacrine exerts a sensitizing effect on the cholinergic receptors of gastric smooth muscles, and study some of the mechanisms inducing it and measure the relative intensity of tacrine's effects on contractile activity. MATERIAL AND METHODS Isometric recording of the mechanical activity of gastric smooth muscle preparations; determination of acetyl-cholinesterase activity in smoo...

Regulation of rascuiar resistance is generally explained in terms of neural, hormonal, metabolic, and myogenic factors altering intracellular calcium [Ca] in vascular smooth muscle. Ca acts as a second messenger regulating the number of active crossbridges and force generation by binding to a myofilament regulatory protein. A search for the Ca-blndlng regulatory protein in arterial smooth muscl...

This paper investigates the question of which smooth compact 4-manifolds admit Riemannian metrics that minimize the L2-norm of the curvature tensor. Metrics with this property are called optimal; Einstein metrics and scalar-flat anti-self-dual metrics provide us with two interesting classes of examples. Using twistor methods, optimal metrics of the second type are constructed on the connected s...