نتایج جستجو برای: radium equivalent activity

تعداد نتایج: 1262006  

2014
Nurul Absar M. Mashiur Rahman Masud Kamal Naziba Siddique Mantazul Islam Chowdhury

Radioactivity in the soil of a tea garden in the Fatickchari area in Chittagong, Bangladesh, was measured using a high-resolution HPGe detector. The soil samples were collected from depths of up to 20 cm beneath the soil surface. The activity concentrations of naturally occurring (238)U and (232)Th were observed to be in the range of 27 ± 7 to 53 ± 8 Bq kg(-1) and 36 ± 11 to 72 ± 11 Bq kg(-1), ...

Journal: :Asian journal of physical and chemical sciences 2022

Aims: To analyse the radiological hazard indices from mining sites in Adamawa State, Nigeria.
 Study Design: Experimental study design using Gamma ray spectroscopy with a well calibrated Sodium Iodide (NaI) detector.
 Place and Duration of Study: Nigeria Department Physics, Nasarawa State University Keffi, Nigeria, Centre for Energy Research Training (CERT) Laboratory, Ahmadu Bello Za...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ولی عصر (عج) - رفسنجان - دانشکده ادبیات و علوم انسانی 1393

the present study investigated construct equivalence of multiple choice (mc) and constructed response (cr) item types across stem and content equivalent mc and cr items (item type ‘a’), non-stem-equivalent but content equivalent mc and cr items (item type ‘b’), and non-stem and non-content equivalent mc and cr items (item type ‘c’). one hundred seventy english-major undergraduates completed mc ...

Journal: :CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne 1998
A R Coppes-Zantinga M J Coppes

In 1936, almost 4 decades after the discovery of the x-ray and of radium, the German Röntgen Society erected a monument to commemorate all who had died as a consequence of exposure to x-rays or radium. George W.C. Kaye of the US National Physical Laboratory wrote the inscription: “To the röntgenologists and radiologists of all nations, doctors, physicists, chemists, technical workers, laborator...

2016
Sten Nilsson

Metastatic castration-resistant prostate cancer (mCRPC) frequently metastasizes to the bone, often resulting in painful skeletal events, reduced quality of life, and reduced survival. The beta-emitting radiopharmaceuticals strontium-89 and samarium-153 alleviated pain in mCRPC patients with widespread skeletal metastases and have been associated with myelotoxicity. Radium-223, a first-in-class ...

Journal: :Expert review of anticancer therapy 2016
James M Wilson Christopher Parker

INTRODUCTION A number of drugs have been shown to extend life expectancy in castration-resistant prostate cancer (CRPC). Skeletal related events (SREs) secondary to bone metastases cause significant morbidity for men with CRPC. The α-emitting radiopharmaceutical radium-223 dichloride has been shown to improve overall survival, time to symptomatic skeletal events (SSEs) and quality of life in CR...

Journal: :Fudma Journal of Sciences 2022

This study was conducted to determine and compare the activity concentration of natural radioactivity 238U, 232Th, 40K in borehole well water samples collected from Lokoja Nigeria, using Sodium Iodide−Thallium gamma spectroscopy. Samples selected wells were standard radiation protocol analyzed. The result shows that sample 2.77±0.67 Bq/l; 2.30±0.27 Bq/l 1.66±0.13 for respectively, 17.62±1.37 wh...

Journal: :Minerals 2022

The occurrence of heavy radioactive minerals in construction supplies such as granite has drawn attention to the extraction minerals. Granitic rocks were identified serve an essential economic role study area’s surrounding locations. As a result, current attempted detect activity concentrations 238U, 232Th, and 40K granitic rock samples tested estimate radiological dangers associated with these...

A. Sunil, E.P. Christa, M.J. Reeba, P.J. Jojo, R. Prasad, S. Ben Byju, V.K. Vaidyan,

Background: The South-west coast of India is known to have very high levels of natural background radiation due to the monazite beach sand. Uranium is the heaviest trace element found in all terrestrial substances at varying levels with chemical and radio toxicities. It supports several short-lived radioisotopes in its decay series including radium. Uranium in drinking water is importa...

Journal: :McGill Journal of Medicine : MJM 2006
Richard Stein

After practicing medicine for two years, he entered graduate school and in May 2005 received his Ph.D. in Biochemistry and Molecular Genetics at the University of Alabama at Birmingham. He is currently a research associate at the University of Wisconsin-Madison. He is the recipient of the American Medical Association's Physican's Recognition Award and was also recipient of the Outstanding Gradu...

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