We consider the nonaxisymmetric linear theory of radially-stratified disks. We work in a shearing-sheet-like approximation, where the vertical structure of the disk is neglected, and develop equations for the evolution of a plane-wave perturbation comoving with the shear flow (a shearing wave, or “shwave”). We calculate a complete solution set for compressive and incompressive short-wavelength ...

background: we tested whether hepatic haemodynamics assessed by doppler ultrasonography can be a predictor of response to therapy in patients with non‑alcoholic fatty liver disease (nafld) to prevent further unnecessary diagnostic tests and interventions. methods: forty eight consecutive patients affected by nafld, who refered to some clinics in tabriz, iran between 2009 and 2011 were included ...

productive and reproductive traits have great importance in international dairy cattle breeding objectives. production, reproduction (days open and calving interval) and pedigree data of iranian holstein dairy cattles were collected between 2002 and 2012 from 47 herds in isfahan province. the data set consisted of 30179 records from 18837 registered iranianholstein dairy cattles. single trait r...

The purpose of this paper is to use generalized power series to provide two classes of examples of valued elds. In the rst set of examples the valued elds are henselian, in general not maximal, with given residue eld and value group. In the second set of examples, the valued elds are all maximal and their families of residue elds and value groups form chains. In both cases, these elds possess a...

– The problem of memory contribution to the collective diffusion coefficient of interacting Brownian particles is considered. A well-defined theoretical expression for this contribution, free of divergent integrals, is derived. Its value is then estimated for hard sphere suspensions numerically by means of extensive computer simulations. A good physical model for a broad class of suspensions is...

This paper considers two properties of graphs, one geometrical and one topolog-ical, and shows that they are strongly related. Let G be a graph with four distinguished and distinct vertices, w 1 ; w 2 ; b 1 ; b 2. Consider the two properties, T RI + (G) and M ON O(G), deened as follows. T RI + (G): There is a planar drawing of G such that: all 3-cycles of G are faces; all faces of G are triangl...