Low natural frequencies and vibration modes of the structure, consisting a closed circular cylindrical shell with end cap, having shape shallow spherical segment, are examined in paper using numerical asymptotic methods. There three types vibrations structure. Natural first type close to shell, second - those third cantilever beam load at end. In part research approximate values for found by As...

We give an example of a spacetime having an infinite thin rotating cylindrical shell constituted by a charged perfect fluid as a source. As the interior of the shell the Bonnor–Melvin universe is considered, while its exterior is represented by Datta– Raychaudhuri spacetime. We discuss the energy conditions and we show that our spacetime contains closed timelike curves. Trajectories of charged ...

Two of the most common ways of processing and manipulating OWL ontologies are through an ontology editing environment (e.g. Protege or TopBraid) or via a programmatic interface, such as the OWL API. A complementary method is to use an OWL-aware command line shell. Posh, the Prolog OWL Shell is an interactive toplevel readeval-print-loop interface that provides powerful capabilities for querying...

We calculate the low-lying spectra of heavy tin isotopes from A = 120 to A = 130 using the 2s1d0g7/20h11/2 shell to define the model space. An effective interaction has been derived using 132Sn as closed core employing perturbative many-body techniques. We start from a nucleon–nucleon potential derived from modern meson exchange models. This potential is in turn renormalized for the given mediu...

A method for analyzing the structural behavior of toroidal magnet systems subjected to Lorentz fomes both in and out of the winding planes, and thermal loads is considered in this paper. The toroidal coil assembly is treated as a finite thickness, orthotropic, rotationally symmetric shell of revolution acted upon by symmetrical and antisymmetrical loads. The equations based on Reissner's shell ...

The tripodal, tetradentate tris(1-(diphenylphosphanyl)-3-methyl-1H-indol-2-yl)phosphane PP3 -ligand 1 stabilizes Ru in the RuII , RuI , and Ru0 oxidation states. The octahedral [(PP3 )RuII (Cl)2 ] (2), distorted trigonal bipyramidal [(PP3 )RuI (Cl)] (3), and trigonal bipyramidal [(PP3 )Ru0 (N2 )] (4) complexes were isolated and characterized by single-crystal X-ray diffraction, NMR, EPR, IR, an...

This review paper aims to present an updated review of papers, conference papers, books, dissertations dealing with nonlinear vibrations of circular cylindrical thin shells. This paper surveyed mathematically, experimentally, analytically, numerically analyzed vibrations of cylindrical shells. This includes shells of open type, closed type, with and without fluid interactions; shells subjected ...