نتایج جستجو برای: semi conductor dosimeter

تعداد نتایج: 150692  

Journal: :The European respiratory journal 2002
R J Ward C Ward D P Johns B Skoric M Abramson E H Walters

Two potential sources of systematic variation in output from Mefar dosimeters, the system used in the European Community Respiratory Health Survey (ECRHS) study have been evaluated: individual nebulizer characteristics and dosimeter driving pressure. Output variation from 366 new nebulizers produced in two batches for the second ECRHS were evaluated, using a solute tracer method, at a fixed dri...

Journal: :the modares journal of electrical engineering 2011
majid ezati mosleh mohammadreza besmi

this paper presents a new method called vespiary regular hexagonal (vrh) model to calculate parasitic capacitance between conductor wire filaments of one turn of a coil and between conductor wires filament and liner and also total capacitance of n-turns having single-layers, multi-conductor wire filaments of the helix magneto cumulative generator (mcg) coil. the presented method is an analytica...

2011
Timothy Olding Oliver Holmes Paul DeJean Kim B. McAuley Ken Nkongchu Giles Santyr L. John Schreiner

This paper explores the combination of cone beam optical computed tomography with an N-isopropylacrylamide (NIPAM)-based polymer gel dosimeter for three-dimensional dose imaging of small field deliveries. Initial investigations indicate that cone beam optical imaging of polymer gels is complicated by scattered stray light perturbation. This can lead to significant dosimetry failures in comparis...

2014
A Asena T Kairn S B Crowe S T Smith

This work examined the suitability of the PAGAT gel dosimeter for use in dose distribution measurements around high-density implants. An assessment of the gels reactivity with various metals was performed and no corrosive effects were observed. An artefact reduction technique was also investigated in order to minimise scattering of the laser light in the optical CT scans. The potential for atte...

Journal: :Journal of Molecular Structure 2022

Crystals of a novel Cobalt complex [Co(C3H7NO)6][CoBr1.93Cl2.07] were synthesized by slow evaporation technique at room temperature. Crystal structure, energy dispersive X-ray spectroscopy (EDX), FT-Infrared (IR), thermal behavior, optical analysis, and impedance measurements provided to characterize this complex. The crystal structure study showed that the cohesion is assured through NH…Br/Cl ...

2015
Hyesu Jeon Wook Jae Yoo Sang Hun Shin Guwon Kwon Mingeon Kim Hyejin Kim Young Beom Song Kyoung Won Jang Won Sik Youn Bongsoo Lee

We developed a multichannel all-in-one phantom dosimeter system composed of nine sensing probes, a chest phantom, an image intensifier, and a complementary metal-oxide semiconductor (CMOS) image sensor to measure the dose distribution of an X-ray beam used in radiation diagnosis. Nine sensing probes of the phantom dosimeter were fabricated identically by connecting a plastic scintillating fiber...

Journal: :Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan) 1985

2014
S. M. Gafar

In this study the spectrophotometric response of the Toluidine Blue O (TBO)-gelatin gel dosimeter irradiated with gamma rays was characterized. Preparation of dyed-gelatin gel takes place in neutral medium; to give eventually gel dosimeter has a sharp absorbance peak at 635 nm that bleaches quantitatively upon irradiation and the colour change can be measured with UV-VIS spectrophotometer. The ...

2017
Heather M Whitney Daniel F Gochberg C Waldenberg A Karlsson Hauer

The normoxic polymer gel dosimeter based on N-isopropyl acrylamide (NiPAM) is a promising full 3D-dosimeter with high spatial resolution and near tissue equivalency. NiPAM gel samples were irradiated to different doses using a linear accelerator. The absorbed dose was evaluated using MRI and statistical significance of the analysed data was calculated. The analysis was carried out using an in-h...

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