ON THE MECHANISM OF HELIUM PERMEATION THROUGH SILICA GLASS

On the mechanism of helium permeation through silica glass

Although the densities of crystal quartz and vitreous silica differ only by about 17% (2.65 and 2.20 g/cm3, respectively), the helium permeability of silica glass is six orders more elevated than that of crystal quartz.This vast difference has puzzled researchers for decades considering that silica glass and quartz crystal have the same chemical co

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Detection of fish movement patterns across management unit boundaries using age-structured Bayesian hierarchical models with tag-recovery data.

Tagging studies have been widely conducted to investigate the movement pattern of wild fish populations.In this study, we present a set of length-based, age-structured Bayesian hierarchical models to explore variabilities and uncertainties in modeling tag-recovery data.These models fully incorporate uncertainties in age classifications of tagged fi

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Doxazosin oral intake therapy to relieve stent - related urinary symptoms and pain: a prospective, randomized, controlled study

ABSTRACT Objective: To assess the impact of Doxazosin Oral Intake Therapy on urinary symptoms and pain in patients with indwelling ureteral stents Patients and Methods: A total of 239 patients with ureteral stone-related hydronephrosis who underwent a double-J stent insertion after ureteroscopic lithotripsy were enrolled.Patients were randomized to

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Drawing used as a tool for devising a new form of fortification during the Italian Renaissance: the example of two projects by Leonardo da Vinci

The irruption of artillery marked the beginning of a rapid process to refound military architecture during the Renaissance.This Accessories need transcended the functional aspect to which fortification was traditionally associated, thus jeopardising the symbolic and representational connotations that medieval walls had hitherto represented in the c

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