نتایج جستجو برای: a radiation

تعداد نتایج: 13500630  

Fereshteh Zarinabadi mehdi salehi,

  Introduction: The study of the cause of death during the last few decades has shown that death due to infectious diseases has been declining and has been rising due to noninvasive diseases, especially cancers and accidents. Cancer is considered as one of the fatal diseases, and every year, more than 10.9 million people worldwide are diagnosed with the disease. Mater...

امیری , مهرانگیز, شبستانی منفرد , علی, هاشم اوغلی , سیدابوالفضل,

Background and purpose : Ït is clearly shown that ionising radiations induce various kinds of DNÂ damages majority of which as sub-lethal damages, are repaired but still some of them are left urepaired and lead to chromosomal aberrations. These chromosomal aberrations in radiation workers, who are occupationally exposed to radiation,could be assayed with cytogenetic evaluation methods.These c...

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...

Introduction: Interventional angiography procedures are increasingly used today. These techniques require a long time of standing near the patient and x-ray tube which lead to increase the radiation-dose of the staff and interventionists. This may also, in turn, lead to the occurrence of radiation deterministic effects. Since a large number of interventional radiology were perf...

Journal: :علوم کاربردی و محاسباتی در مکانیک 0
مرتضی عنبرسوز حمید نیازمند

high temperatures are often encountered in almost all of the combustion systems, therefore, thermal radiation heat transfer can influence the droplets heat up rate and consequently their life time. in this paper, the effect of thermal radiation heat transfer is investigated for two cases of directional and spherically symmetric illuminations. the flow and temperature fields insdie and outside o...

Gh. Haeri, H. Rajabi, Sh. Akhlaghpoor,

Background: Finding a suitable method for rapid, accurate and reliable estimation of absorbed dose has high priority in management of the radiation exposed persons. Shortly after radiation exposure, apoptosis is a major detriment in proliferative tissues such as the hematopoietic system. Therefore, quantification of apoptosis in these tissues could be useful for rapid estimation of radiation ex...

A. Soleimani, A. Zarei, B. Namavar Jahromi, H. Mozdarani, M. Davari, M. E. Parsanezhad, M. Haghani, S. Amjadi, S. M. J. Mortazavi, T. Doohandeh,

Background: The health effect of rapidly increasing everyday exposure of humans to radiofrequency radiation is a major global concern. Mobile phone jammers prevent the mobile phones from receiving signals from base stations by interfering with authorized mobile carriers’ services. In spite of the fact that mobile jammer use is illegal, they are occasionally used in offices, shrines, confe...

Radiotherapy (RT) is generally considered to be one of the most effective cancer treatments. The primary goal of RT is to accurately induce radiation damage to the tumor while limiting radiation toxicity to a level acceptable to normal tissue. This is accomplished by targeting the tumor with radiation. On the other hand, the status of RT procedures as they stand today is not substantial enough ...

Masoud Iranmanesh Mehran Ameri, Saeed Edalati

In this study, an artificial neural network based model for prediction of solar energy potential in Kerman province in Iran has been developed. Meteorological data of 12 cities for period of 17 years (1997–2013) and solar radiation for five cities around and inside Kerman province from the Iranian Meteorological Office data center were used for the training and testing the network. Meteorologic...

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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