shrink fit process is a useful technique in order to introduce beneficial residual stress in compound pressure vessels. in this paper, the effects of geometrical tolerances on residual stresses have been studied for a compound shrink fitted pressure vessel, practically. three layers, which are designed based on an optimum nominal thickness and overlap dimensions and tolerances, have been fitted...

introduction: this paper addresses a method for automatic detection of blood vessels in color fundus images which utilizes two main tools: image partitioning and local radon transform. material and methods: the input images are firstly divided into overlapping windows and then the radon transform is applied to each. the maximum of the radon transform in each window corresponds to the probable a...

Position control for heavy-lift construction vessels is crucial safe operation during offshore construction. During the various phases of a typical assignment, considerable changes in dynamics crane-vessel system occur. Operational hazard was reported if such interchanging are not properly handled. However, to date and best our knowledge, no systematic solution considering multiphase scenarios....

Abstract In contrast to unstructured meshes, structured meshes yield faster simulation results for bio-medical simulations, but are very time-consuming create. A preprocessing step in the generation of is manual construction a blockstructure approximating vessel. Here, we present an automatic centerline calculation and reduce user effort time mesh generation. The detected as points between oppo...

Focusing on the collision avoidance problem for Unmanned Surface Vehicles (USVs) in scenario of multi-vessel encounters, a USV autonomous obstacle algorithm based improved velocity method is proposed. The composed two parts: encounter detection model and path re-planning algorithm. draws idea through integration characteristics such as dynamic marine environment, encountering vessel motion mode...

The purpose of this study is to analyze the applicability a sunken vessel as an artificial reef in high wave energy area shallow water zone. Artificial reefs general shapes are unlikely be installed and maintained stably high-energy zones. To solve problem, method for using large 2000-ton class was proposed study. Accordingly, we analyzed applicability, including stability, on east coast South ...

congenital anomalies of coronary arteries, albeit rare, may be significant contributors to angina pectoris, hemodynamic abnormalities, and sudden cardiac death. a 47-year-old man referred to us with atypical chest pain. electrocardiography demonstrated no significant ischemic changes, but cardiac troponin i test was positive. the patient underwent coronary angiography, which revealed a single c...

large intercoronary communications in the absence of obstructive coronary artery disease constitute a very rare coronary artery anomaly in which there is a readily visible connection between the 2 coronary arteries with a unidirectional or bidirectional blood flow; consequently, this anomaly may be misinterpreted as a functioning collateral vessel, indicative of an unrecognized proximal coronar...

Myocardial ischemia is transmurally heterogeneous where the subendocardium is at higher risk. Stenosis induces reduced perfusion pressure, blood flow redistribution away from the subendocardium, and consequent subendocardial vulnerability. We propose that the flow redistribution stems from the higher compliance of the subendocardial vasculature. This new paradigm was tested using network flow s...