Conductometric determination of sulfur in beryllium oxide ceramics using induction heating and peroxide absorption

1968 ◽  
Vol 40 (1) ◽  
pp. 202-204 ◽  
Author(s):  
James F. Chapman ◽  
Malcolm. Thackray
Keyword(s):  
Induction Heating ◽  
Beryllium Oxide ◽  
Oxide Ceramics

Determination of levitated molten metal shape in axisymmetric induction heating system using sensitivity analysis

1995 ◽  
Vol 31 (3) ◽  
pp. 2158-2161 ◽  
Author(s):  
Ghun-Deok Suh ◽  
Hong-Bae Lee ◽  
Song-Yop Hahn ◽  
Tae-Kyung Chung ◽  
Il-Han Park
Keyword(s):  
Sensitivity Analysis ◽  
Molten Metal ◽  
Induction Heating ◽  
Heating System ◽  
Induction Heating System ◽  
Metal Shape

Determination of the phase-transformation temperature of beryllium oxide

Refractories ◽  
1969 ◽  
Vol 10 (5-6) ◽  
pp. 314-315
Author(s):  
Yu. A. Kocherzhinskii ◽  
E. A. Shishkin ◽  
L. M. Yupko
Keyword(s):  
Phase Transformation ◽  
Transformation Temperature ◽  
Beryllium Oxide ◽  
Phase Transformation Temperature

Surface Heat Treatment Design Methodology of Large-Scale Castings

2006 ◽  
Vol 513 ◽  
pp. 61-68
Author(s):  
P. Kula ◽  
T. Liskiewicz ◽  
T. Pacyniak
Keyword(s):  
Heat Treatment ◽  
Induction Heating ◽  
Design Methodology ◽  
Large Scale ◽  
Chemical Properties ◽  
Surface Heat ◽  
Heating And Cooling ◽  
Reliable Design ◽  
Forced Cooling

The process of induction heating followed by forced cooling of large-scale castings is considered. The main goal of this study is to develop a reliable design methodology of surface heat treatment process to provide high quality of the treated component. It is assured by determination of the material constants and convection coefficient during heating and cooling experiments carried out on the specimens made of material adequate to the considered large-scale casting. The main part of the investigations was preceded by wide analyses of the mechanical and chemical properties of the tested specimens. The presented global design methodology of large-scale castings gives a possibility to predict the temperature distribution on the hardened surface during induction heating and forced cooling. This allows to select the most adequate parameters and apply them in a real specific process. The obtained results have been analyzed and discussed.

Comprehensive evaluation of electron radiation dose using beryllium oxide dosimeters at breast radiotherapy

2019 ◽  
Vol 19 (1) ◽  
pp. 38-44
Author(s):  
Serdar Şahin ◽  
Eren Şahiner ◽  
Fatih Göksel ◽  
Niyazi Meriç
Keyword(s):  
Comprehensive Evaluation ◽  
Absorbed Dose ◽  
Beryllium Oxide ◽  
Left Breast ◽  
Planning System ◽  
Treatment Planning System ◽  
Breast Radiotherapy ◽  
The Mean ◽  
Beam Dose

AbstractIntroduction:In this study, the differences between calculated and measured dose values were then analysed to assess the performance, in terms of accuracy, of the tested treatment planning system (TPS) algorithms applied to calculate electron beam dose targeted and non-targeted the breast region.Materials and methods:The beryllium oxide (BeO) dosimeters placed on the female RANDO phantom were irradiated 12 MeV electron energy with medical linear accelerator and repeatedly read in the Risø thermoluminescence (TL)/optically stimulated luminescence (OSL) system via OSL method at least three times.Results:For electron treatment, one made quantitative comparisons of the dose distributions calculated by TPSs with those from the measurements by OSL at various points in the RANDO phantom.The mean dose measured from the dosimeters placed on the female RANDO phantom target left breast region was 160 cGy and non-target right breast region was 1·2 cGy. Analysis of Generalised Gaussian Pencil Beam (GGPB) and Electron Monte Carlo (eMC) algorithms for determined region mean point dose values, respectively, 174 and 164 cGy. Two algorithms for non-targeted region calculated same point dose values of 0·2 cGy.Conclusions:The results of this study showed that BeO dosimeters can be used with OSL method in radiotherapy applications and it is a very important tool for the determination of targeted/non-targeted absorbed dose.

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