Determination of correction factors for a 2D diode array device in MV photon beams

2009 ◽  
Vol 36 (2) ◽  
pp. 523-529 ◽  
Author(s):  
Xiaodong Zhou ◽  
Stefan Both ◽  
Timothy C. Zhu
Keyword(s):  
Diode Array ◽  
Correction Factors ◽  
Photon Beams

scholarly journals A novel method for the determination of field output factors and output correction factors for small static fields for six diodes and a microdiamond detector in megavoltage photon beams

2018 ◽  
Vol 46 (2) ◽  
pp. 944-963 ◽  
Author(s):  
Božidar Casar ◽  
Eduard Gershkevitsh ◽  
Ignasi Mendez ◽  
Slaven Jurković ◽  
M. Saiful Huq
Keyword(s):  
Correction Factors ◽  
Photon Beams ◽  
Output Factors ◽  
Novel Method

Determination of ion recombination correction factors for a liquid ionization chamber in megavoltage photon beams

2015 ◽  
Vol 66 (9) ◽  
pp. 1439-1447
Author(s):  
Sang Hyoun Choi ◽  
Kum-Bae Kim ◽  
Young Hoon Ji ◽  
Chan Hyeong Kim ◽  
Seonghoon Kim ◽  
...  
Keyword(s):  
Ionization Chamber ◽  
Correction Factors ◽  
Photon Beams ◽  
Liquid Ionization Chamber ◽  
Ion Recombination ◽  
Liquid Ionization

scholarly journals Substitute Technology for Reference Substances in the Analysis of Impurities in Cefonicid for Injection with HPLC Using a Diode Array Detector

2011 ◽  
Vol 94 (2) ◽  
pp. 531-536 ◽  
Author(s):  
Wei Li
Keyword(s):  
Sulfonic Acid ◽  
Array Detector ◽  
Diode Array ◽  
Correction Factors ◽  
Diode Array Detector ◽  
Related Substances ◽  
Impurity Profiling ◽  
Peak Tracking ◽  
Sample Data

Abstract With HPLC using a diode array detector (DAD), a method of substitution for reference substances in impurity profiling control was developed that combined peak tracking by the correlation of spectra with application of correction factors for determination of each impurity. For qualitative analysis, two-dimensional (2D) standard spectrochromatographic data produced by HPLC-DAD were compared with sample data to develop 2D chromatographic spectral correlative maps so that the three target impurities were recognized without preparation and injection of reference solutions. For quantitative analysis, correction factors among cefonicid and the three impurities were established. The correction factors were 1.06 for 5-mercapto-1,2,3,4-tetrazole 1-methyl sulfonic acid detected at 255 nm, 0.77 for 7-aminocephalosporanic acid detected at 265 nm, and 0.97 for methoxycefonicid detected at 268 nm. The method could be used in analysis of related substances in cefonicid for injection without recourse to chemical reference standards of the three impurities.

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