نتایج جستجو برای: radiation effects

تعداد نتایج: 1749321  

Introduction: Medical workers in the departments of radiology, computed tomography, nuclear medicine, and radiotherapy are always exposed to ionizing radiations. Complete blood count (CBC) test is commonly used to monitor the health of radiation workers. The aim of this study was to evaluate the hematological parameters of radiation workers of Isfahan, Iran, and reveal...

Journal: یافته 2007
hamid reza Khossravi , mehrdad Gholami , mohammad reza Abedini , soheila Akbari ,

Gholami M1, Abedini MR2, Khossravi HR3, Akbari S4 1. Instructor, Department of medical physics, Faculty of medicine, Lorestan University of medical sciences 2. Assistant professor, Department of radiology, Faculty of medicine, Lorestan University of medical sciences 3. Assistant professor, Department of radiation protection, Iranian Atomic Energy Organization 4. Assistant professor, D...

ژورنال: سنجش و ایمنی پرتو 2013

The risk of leukemia and other radiation oriented diseases for astronauts increases with exposure to cosmic radiation. During the space missions, the blood and immune system change and the bones are affected by osteoporosis. In this research, a model, based on the human blood system, is presented for the study of the microgravity and the space radiation effects on the blood cells. This model is...

Journal: :iranian journal of radiation research 0
f. farhan dr. f. farhan, radiotherapy-oncology department, imam hospital, tehran university of medical science, tehran, iran. a. kazemian h. alagheband

background: radioprotective capability of histamine h2 receptor antagonists have been shown in several in vivo studies mainly using animal models. however, to verify the effectiveness of these agents in clinical applications, studies should be performed on human cells. in the present study radioprotective properties of these agents was examined in vitro on human lymphocytes using metaphase anal...

In this study, the concentrations of micro and nano-sized pollutant particulates in the air and simultaneous sun radiation were monitored and then the effects of air pollutant particulates on sun radiation were evaluated. Measurements were done during summer season in the Karaj, Meshkin-dasht. Statistical investigation of the collected data, resulted three equations, indicating the effects o...

Introduction: Adaptive response is one of the important concepts in radiobiology. The present report aimed to transfer the radio-adaptation via serum. Material and Methods: In total, 50 male adult Wistar rats were randomly divided into 6 groups, including control, serum control, low-dose (100cGy), low-dose/lethal, serum/lethal, and lethal (8G...

Journal: :iranian journal of radiation research 0
k. mishra chemical radioprotector and radiation dosimetry research group, division of radiation biosciences, institute of nuclear medicine and allied sciences, delhi-110054, india h. ojha chemical radioprotector and radiation dosimetry research group, division of radiation biosciences, institute of nuclear medicine and allied sciences, delhi-110054, india s. kallepalli chemical radioprotector and radiation dosimetry research group, division of radiation biosciences, institute of nuclear medicine and allied sciences, delhi-110054, india a. alok chemical radioprotector and radiation dosimetry research group, division of radiation biosciences, institute of nuclear medicine and allied sciences, delhi-110054, india n. kumar chaudhury chemical radioprotector and radiation dosimetry research group, division of radiation biosciences, institute of nuclear medicine and allied sciences, delhi-110054, india

background: ionizing radiation causes deleterious effects on living system mainly due to oxidative damages of macromolecules and protein is the major target due to its abundance. the aim of this study was to investigate the effects of ionizing radiation induced changes in the molecular properties of bovine serum albumin (bsa) its secondary and tertiary structures, degradation, cross linking and...

1996

a. This chapter will cover basic biophysical and biological effects of ionizing radiation in order to form a foundation for understanding the clinical aspects of radiation injury discussed in Section IV of Chapter 6. This extended discussion of radiation does not imply that nuclear radiation will be the most important cause of casualties after a nuclear explosion. Blast and thermal injuries in ...

2010
Mei-Kang Yuan Ching-Wen Chien San-Kan Lee Nai-Wei Hsu Shih-Chieh Chang Shu-Ju Chang Gau-Jun Tang

Medical application of radiation began a few months after the discovery of X-rays by the German physicist Wilhelm Conrad Röntgen more than 100 years ago. The harmful biological effects of ionizing radiation became apparent shortly after its utilization. Since 1920, health professionals in contact with radiation have worn lead protective clothing to reduce the harmful effects of ionizing radiati...

Journal: :iranian journal of radiation research 0
k.l. sriharsha 1department of studies in environmental science, university of mysore, manasagangotri, mysore –570 006,karnataka, india m. raghavayya 1department of studies in environmental science, university of mysore, manasagangotri, mysore –570 006,karnataka, india n.r. rajendra prasad 2department of environmental science, st. philomena’s college, mysore –570 015, karnataka, india m.s. chandrahekara 3department of studies in physics, university of mysore, manasagangotri, mysore –570 006, karnataka, india

background: humans beings are continuously exposed to ionizing radiation from natural sources. the main contributors to natural radiation are high-energy cosmic radiation and radioactive nuclides that originates in the earth’s crust. exposure to high levels of radiation can cause serious health effects. in this study an attempt has been made to monitor the levels of environmental background rad...

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