نتایج جستجو برای: luminescent dosimeters

تعداد نتایج: 8751  

Journal: :Journal of Electrical Engineering and Information Technologies 2023

As a result of the risk that radiological and nuclear disasters accidents will expose membersof public to unsafe amounts radiation, numerous emergency dosimetry approaches for triage have beenthoroughly explored. The current methods retrospective encompass variety biological, physical, andchemical procedures related radiation exposure human body. Additional items might be useful asfortuitous do...

2004
Alfio V. Parisi Michael G. Kimlin

Polysulphone dosimeters using a simple to use filter have been developed and tested to provide an extended dynamic measurement range of personal solar UV exposures over an extended period (3 to 6 days). At a Southern Hemisphere subtropical site (27.68S, 151.98E), the dynamic range of the filtered polysulphone allowed measurements of erythemal exposures to approximately 100 minimum erythemal dos...

Journal: :Chemical communications 2011
Siu-Kit Leung Hua-Wei Liu Kenneth Kam-Wing Lo

A new class of luminescent cyclometalated iridium(III) polypyridine fluorous complexes has been designed; the fluorous pendant not only plays an important role in the photophysical and biological properties of the complexes, but also allows the facile isolation of biomolecules labeled with these complexes with fluorous solid-phase extraction (FSPE).

Journal: :iranian journal of radiology 0
hamid behroozi department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, ahvaz, iran; department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, p.o. box: 61357-15794, golestan, ahvaz, iran. tel: + 98-6113738317e, fax: + 98-6113738330 mohammad davoodi department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, ahvaz, iran shahriar aghasi department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, ahvaz, iran

background the present data show a global increase in the rate of cardiovascular disease. cardiac ct angiography has developed as a fast and non-invasive cardiac imaging modality following the introduction of multi-slice computed tomogaraphy. conclusions the total mean radiation dose to the thyroid and gonads was 0.36 msv, and 96.5 μsv, respectively for the subjects. these values were high for ...

2003
M. H. Zahmatkesh B. J. Healy

Background: The compositions of Ferrous sulphate, Agarose and Xylenol orange dye (FAX) and Ferrous sulphate, Gelatin and Xylenol orange dye (FGX) in solution of distilled water and sulphuric acid are two tissue-equivalent gel dosimeters. Ionizing radiation causes oxidation of Fe ion to Fe ions which diffuse through the gel matrix and blur the image of absorbed dose over a period of hours after ...

2015
Bongsoo Lee Guwon Kwon Sang Hun Shin Jae Seok Kim Wook Jae Yoo Young Hoon Ji Kyoung Won Jang

In this study, prototype ultra-thin fiber-optic dosimeters were fabricated using organic scintillators, wavelength shifting fibers, and plastic optical fibers. The sensor probes of the ultra-thin fiber-optic dosimeters consisted of very thin organic scintillators with thicknesses of 100, 150 and 200 μm. These types of sensors cannot only be used to measure skin or surface doses but also provide...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

lu3+/yb3+ and lu3+/er3+ co-doped sb2se3 nanomaterials were synthesized by a co-reduction method in hydrothermal condition. powder xrd patterns indicate that the lnxln′xsb2-2xse3 ln: lu3+/yb3+ and lu3+/er3+ crystals (x= 0.00-0.04) are isostructural with sb2se3. the cell parameters were increased for compounds upon increasing the dopant content (x). sem and tem images show that co-doping of lu3+/...

Journal: :Photodermatology, photoimmunology & photomedicine 2015
Brian Køster Jens Søndergaard Jesper B Nielsen Martin Allen Mette Bjerregaard Anja Olsen Joan Bentzen

BACKGROUND In 2007, a national skin cancer prevention campaign was launched to reduce the UV exposure of the Danish population. To improve campaign evaluation a questionnaire validation using UV-dosimeters was initiated. AIM To show the feasibility of dosimeters for national representative studies and of smartphones as a data collection tool. MATERIALS AND METHODS Participants were sent a d...

Journal: :Physica Medica 2021

Abstract The lack of mailed dosimetry audits proton therapy centres in Europe has encouraged researchers EURADOS Working Group 9 (WG9) to compare response several existing passive detector systems therapeutic pencil beam scanning. Alanine Electron Paramagnetic Resonance from 3 different institutes (ISS, Italy; UH, Belgium and IFJ PAN, Poland), natLiF:Mg, Ti (MTS-N) Cu, P (MCP-N) thermoluminesce...

Journal: :international journal of pediatrics 0
vahid karami medical physics student (msc), department of medical physics, student research committee, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran. mansour zabihzadeh assistant professor, department of medical physics, school of medicine, student research committee, ahvaz jundishapur university of medical sciences, ahvaz, iran. mehrdad gholami assistant professor, department of medical physics, lorestan university of medical sciences, khorram abad, iran. nasim shams assistant professor (phd), department of oral and maxillofacial radiology, school of dentistry, ahvaz jundishapur university of medical sciences, ahvaz, iran zahra fazeli nezhad radiologist, department of radiology, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran.

background  it is remain a main concern that pediatric chest radiographies contribute to the significant radiation exposure to the thyroid gland as a more susceptible organ to radiation induced cancer. the aim of this study was to evaluate the entrance surface dose (esd) of pediatric chest radiography compared to the diagnostic reference levels (drl) and evaluation the efficacy of the lead (pb)...

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