نتایج جستجو برای: stress redistribution
تعداد نتایج: 456798 فیلتر نتایج به سال:
The Border Gateway Protocol (BGP) is the protocol used to distribute Internet routes between different organizations. BGP routing policies are very important because they enable organizations to enforce their business relationships by controlling route redistribution and route selection. In this paper, we investigate the semantic of BGP policies. We aim to determine whether two policies are equ...
Extending the analysis of the evolution of pore humidity and carbonation presented in a preceding paper by Ferretti and Baz ̆ant, this paper analyzes the redistribution in time of vertical normal stresses across the multiple-leaf wall of ancient towers, using the example of collapsed Pavia Tower. It is shown that stress redistribution due to nonuniform shrinkage and nonuniform creep across the w...
OBJECTIVES We sought to assess the mechanism and significance of different (201)Tl redistribution patterns after successful primary stenting following acute myocardial infarction (AMI). BACKGROUND The mechanism of (201)Tl reverse redistribution and the impact of different redistribution patterns on the recovery of contractility after successful reperfusion therapy for AMI remain unclear. ME...
Among the adaptive-grid methods, redistribution and embedding techniques have been the focus of more attention by researchers. Simultaneous or combined adaptive techniques have also been used. This paper describes a combination of adaptive-grid embedding and redistribution methods on semi-structured grids for two-dimensional invisid flows. Since the grid is semi-structured, it is possible to us...
Background. Thallium reinjection immediately after conventional stress-redistribution imaging improves the detection of viable myocardium, as many myocardial regions with apparently "irreversible" thallium defects on standard 3-4-hour redistribution images manifest enhanced thallium uptake after reinjection. Because the 10-minute period between reinjection and imaging may be too short, the pres...
In HeLa cells exposed to supra-optimal temperatures, the alpha-crystallin-related stress protein hsp28 is reversibly redistributed inside the nucleus and increases its level of phosphorylation and aggregation. Here, I show that, at normal temperature after a heat stress, the sodium ionophore monensin maintains the nuclear localization of hsp28 without impairing the dephosphorylation of this pro...
BACKGROUND Thallium reinjection immediately after conventional stress-redistribution imaging improves the detection of viable myocardium, as many myocardial regions with apparently "irreversible" thallium defects on standard 3-4-hour redistribution images manifest enhanced thallium uptake after reinjection. Because the 10-minute period between reinjection and imaging may be too short, the prese...
The ability to understand stress redistribution within a mine will allow for greater extraction efficiency with reduced safety concerns. Stress redistribution has been examined at the laboratory scale using ultrasonic tomography and numerical modelling using PFC. In the first part of the study an equation is developed to convert the macro-properties of the rock to the micro-properties of the pa...
Analytical Solutions and type curves for the constant rate radial flow of fluid in both conventional and naturally fractured reservoirs including the effect of wellbore phase redistribution are presented. An automated procedure for non-linear least square minimization using the analytical solutions and their derivatives with respect to the unknown parameters developed to analyze the pressur...
Structural health monitoring of cracked structures is one of beloved subject of researchers recently. Consider of crack behavior in the water and energy pipeline is important because of environmental problems. In this paper consider of crack parameters in the underwater pipe subjected to mechanical transient load is investigated. For this purpose, three- dimensional parametric model of cracked ...
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