نتایج جستجو برای: radiation exposure rate

تعداد نتایج: 1435275  

J.I. Komura, K. Ichinohe, K. Tanaka, K. Yamauchi, M. Yoneya, T. Ono, Y. Tsutsumi,

Background: The development of methods to alleviate radiation-induced health effects is important for the practical use of radiation therapy and for understanding the molecular mechanisms mediating these effects. Here, we examined the protective capability of N-acetylcysteine (NAC) on life-shortening effects induced by continuous low dose-rate gamma-ray exposure in mice. Materials and Methods: ...

ژورنال: ارگونومی 2015
حسام, قاسم, علی آبادی, امیر, مرادپور, زهرا,

Introduction: Welding is considered to be one of the main sources of occupational exposure to non ionizing radiations. The present study was conducted to examine the rate of occupational exposure to non-ionizing radiation in common welding processes. Materials and Methods: In the present descriptive analytical study, occupational exposure to different types of non-ionizing radiations in...

ژورنال: سنجش و ایمنی پرتو 2014

All building materials contain various amounts of natural radioactive nuclides. Materials derived from rock and soil contain mainly natural radionuclides of the uranium (238U) and thorium (232Th) series, and the radioactive isotope of potassium (40K). Radiation exposure due to building materials can be divided into external and internal exposure. The external exposure is caused by direct gamma ...

Journal: :international journal of occupational and environment medicine 0
the ijoem

0

Journal: :iranian journal of radiation research 0
t.v. ramachandran 19-a/201, verain, regency estate, kalyan – shill road near s.v. jondhele eng. college, dombivli(e) 421 202, thana dist, maharashtra, india

all living organisms are exposed to ionizing radiation comprising cosmic rays coming from outer space, terrestrial nuclides occurring in the earth’s crust, building materials, air, water and foods and in the human body itself. the exposures are constant and uniform for all individuals everywhere including the dose from ingestion of 40k in food. cosmic rays are, more intense at higher altitudes,...

ژورنال: Medical Laboratory Journal 2017
Khoshbin khoshnazar , Alireza, Mir, Seyed Mostafa, Sadeghi, Seyed Hossein , Samadian, Esmaeil,

ABSTRACT          Background and Objectives: Exposure to ionizing radiation in modern societies is inevitable and can cause a variety of adverse health effects such as cancer and birth defects. Therefore, a reliable, repeatable and sensitive method is required for evaluation of radiation exposure. The aim of this study was to determine the amount of hist...

Journal: :middle east journal of cancer 0
milad baradaran-ghahfarokhi mechanical engineering department, school of engineering, shiraz university, shiraz, iran mohammad amin mosleh-shirazi physics unit, department of radiotherapy and oncology, namazi hoapital, shiraz university of medical sciences, shiraz, iran reza faghihi mechanical engineering department, school of engineering, shiraz university, shiraz, iran mohammad hadi bagheri department of radiology and medical imaging research center, shiraz university of medical sciences, shiraz, iran kamal hadad mechanical engineering department, school of engineering, shiraz university, shiraz, iran ali alavian-ghavanini mechanical engineering department, school of engineering, shiraz university, shiraz, iran

background : limited studies are available on the calculation of radiation exposure and its associated risks for people in contact with patients who have been treated with permanent prostate brachytherapy. in this study the changes in the radiation exposure were calculated in different stages of the bladder fullness in prostate seed brachytherapy. methods :magnetic resonance images of three pat...

Journal: :iranian journal of nuclear medicine 1995
h mohammadi s mehdizadeh sh derakhshan

an extensive study was undertaken to investigate on the overall film badge service performance with which occupational radiation, exposures are reported in iran, the study involved the analysis of film badges exposed to x-and gamma rays and beta particles. for test exposures, x-rays between 60 and 140 kvpco-60 gamma radiation and sr-90 beta particles were used. the actual delivered dose equival...

Journal: :asia oceania journal of nuclear medicine and biology 0
danupon nantajit office of atoms for peace; chulabhorn hospital, bangkok, thailand sureerat saengsuda rajavithi hospital, bangkok, thailand pattama nanakorn office of atoms for peace, bangkok, thailand yuthana saengsuda rajavithi hospital; college of medicine, rangsit university, bangkok, thailand

objective(s): the aim of this study was to determine whether high-dose radioactive iodine (na131i) outpatient treatment of patients with thyroid carcinoma is a pragmatically safe approach, particularly for the safety of caregivers. methods: a total of 79 patients completed the radiation-safety questionnaires prior to receiving high-dose radioactive iodine treatment. the questionnaire studied th...

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