Like other structures, shallow domes have imperfections from the prescribed values obtained by specifications during the construction process. Specifications define some tolerance values for imperfections. Despite consideration of these values, the critical load of a dome varies for each imperfection pattern. So the reliability plays an important role in domes safety. Theoretical evaluation pro...

Macroscopic T wave alternans (TWA) associated with increased occurrence of ventricular arrhythmias has been reported in patients with Brugada syndrome. However, the mechanisms in this syndrome are still unclear. We evaluated the hypothesis that TWA in Brugada syndrome was caused by the dynamic instability and heterogeneity of action potentials (APs) in the right ventricle. Using an optical mapp...

We formulate and model the dynamics of spatial patterns arising during the precipitation of calcium carbonate from a supersaturated shallow water flow. The model describes the formation of travertine deposits at geothermal hot springs and rimstone dams of calcite in caves. We find explicit solutions for travertine domes at low flow rates, identify the linear instabilities which generate dam and...

The Magellan SAR images show that volcanic domes occur on the surface of Venus. Edifices with scalloped margins are similar to volcanic domes and fall within a spectrum ranging from unmodified to remnant forms. Over 320 domes have been located of which more than 80% have modified morphologies. Broadly, the modified domes can be described by five sub-categories which are related to three unmodif...

A dynamical theory of geophysical precipitation pattern formation is presented and applied to irreversible calcium carbonate (travertine) deposition. Specific systems studied here are the terraces and domes observed at geothermal hot springs, such as those at Yellowstone National Park, and speleothems, particularly stalactites and stalagmites. The theory couples the precipitation front dynamics...

Mare domes are smooth low features with gentle convex upward profiles. Isolated domes may be found in almost all maria, but significant concentrations occur in the Hortensius/Milichius/T. Mayer region, Oceanus Procellarum, and Mare Tranquillitatis [1]. The Marius Hills in Oceanus Procellarum represent the lunar region in which domes are most abundant. The surface material of the complex has bee...

in the classification of traditional domes, they are divided into two main categories: “roc” (cone-shaped) and “nār” (hemisphere-like) domes. urchīn domes are a sub-category of cone-shaped domes which were common in the past in the region of mesopotamia and southwest of iran. the fractal geometry is the best way to describe the geometrical structure of these domes, because the existence of self...

Introduction: Domes and more oblong and irregularly shaped mounds have been described from the Arcadia and Utopia Planitiae regions on Mars [1,2,3]. In [1] it was suggested that the domes in Arcadia were volcanic domes and they were compared to terrestrial volcanic domes with silica contents generally higher than have been associated with known volcanic products on Mars. In [2] it was posited t...