When an asymmetric bubble collapses it generally produces a well defined high velocity jet. This is remarkable because one might expect such a collapse to produce a complex or chaotic flow rather than an ordered one. I present a dimensional argument for the ubiquity of jets from collapsing bubbles, and model the aspherical collapse of a bubble with pieces of Rayleigh’s solution for spherical co...

Background and objectives: Treatment with IFN is rarely associated with nephrotic syndrome and renal biopsy findings of minimal-change disease or FSGS. Design, setting, participants, & measurements: We report 11 cases of collapsing FSGS that developed during treatment with IFN and improved after discontinuation of therapy. Results: The cohort consists of seven women and four men with a mean age...

Partial combinatory algebras occur regularly in the literature as a framework for an abstract formulation of computation theory or re-cursion theory. In this paper we develop some general theory concerning homomorphic images (or collapses) of pca's, obtained by identiication of elements in a pca. We establish several facts concerning nal collapses (maximal identiication of elements). `En passan...

For reducibilities r and r′ such that r is weaker than r′, we say that the r-degree of A, i.e., the class of sets which are r-equivalent to A, collapses to the r′-degree of A if both degrees coincide. We investigate for the polynomial-time bounded many-one, bounded truth-table, truth-table, and Turing reducibilities whether and under which conditions such collapses can occur. While we show that...

Much has been learned about string theory over the last few years by studying properties of cycles and branes in a given background geometry. Here we discuss three situations (quantum volume, attractor flows/D-brane stability, and dynamical topology change) in which cycles in a Calabi-Yau background evolve and/or degenerate in some manner, yielding various insights into aspects of quantum geome...

Received: April 29, 2017 Revised: July 01, 2017 Accepted: August 30, 2017 Abstract: Introduction: Unloading phenomenon happens in the beginning of drilling and is able to change stress state around borehole. This change of stress state causes impact on rock structure and strength, thus affecting the evaluation of wellbore stability. Especially for determining initial mud pressure, unloading is ...

Soil labile organic carbon (LOC) is a valuable and sensitive parameter of the changes in soil (C) pools further affects structural stability. However, influences soil-aggregate stability on LOC fractions under erosion conditions are still unclear, especially collapsing gully area south China. Soils five positions erosion, including upper catchment (UC), wall (CW), colluvial deposit (CD), scour ...

We study the formation of the (noncommutative) Schwarzschild black hole from collapsing polytropic and Chaplygin gas shells. We show that the collapsing shell forms either a black hole or a naked singular shell with the help of the pressure. A slight modification of collapsing shell that consists of the smeared gravitational sources can form a noncommutative Schwarzschild black hole while this ...

Analyses of many different types of nonlinear wave equations indicate that a collapsing wave will transform into a universal blowup profile regardless of its initial shape; that is, the amplitude of the wave increases as the spatial extent decreases in a self-similar fashion. We show experimentally that the spatial profile of a collapsing optical wave evolves to a specific circularly symmetric ...

One of the Iraqi geotechnical problems is presence gypseous soils covering about (27-36) percentage Iraq containing gypsum between (10-70) ratios. The main reason for soil problematic dissolution when these are inundated. However, soluble can be leached out particles, so led to cracking, tilting, and collapsing related structure changing properties. aim this work investigate performance under-r...