We investigate the occurrence of naked singularities in the spherically symmetric, plane symmetric and cylindrically symmetric collapse of charged null fluid in an antide Sitter background. The naked singularities are found to be strong in Tipler’s sense and thus violate the cosmic censorship conjecture, but not hoop conjecture. PACS number(s): 04.20.Dw That the end state of gravitational colla...

Abstract This paper summarizes an NIH-funded research project designed to study the strength of high temperature superconductors under circumferential hoop stress, in order qualify these materials for high-field (> 1 GHz-class) NMR magnets. The unique approach presented here is spin test coils at rotational speeds, approaching 50,000 rpm, induce mechanical stresses which are equivalent magne...

The aim of this study was to present our experience of patients with penile strangulation. The clinical data of 6 patients (mean age, 36 years; range, 18-72 years) with penile strangulation caused by a metal hoop are provided, where the duration of strangulation was between 3 h and 1 month. Among these patients, the case of a 22-year-old patient with a steel hoop entrapment on his penis for 5 d...

We analyze axisymmetric deformations of a rotating disk with its thickness, mass density, thermal expansion coefficient and shear modulus varying in the radial direction. The disk is made of a rubberlike material that is modeled as isotropic, linear thermoelastic and incompressible. We note that the hydrostatic pressure in the constitutive relation of the material is to be determined as a part ...

Fewer reports regarding the portable FDM machine has encourage the study about the capability of the machine to be used as sacrificial master pattern in investment casting for small production of castings. This study presents an analysis of cracking on ceramic shell during burnout process to determine the maximum value of the hoop stress towards pattern itself and also hoop stress on ceramic sh...