نتایج جستجو برای: radiation systems

تعداد نتایج: 1402818  

Journal: :iranian journal of public health 0
mohammad hadi dehghani dept. of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran ; tehran university of medical sciences, center for solid waste research (cswr), institute for environmental research (ier), tehran, iran. gholam-reza jahed ahmad zarei

rhabditidae is a family of free-living nematodes. free living nematodes due to their active movement and resistance to chlorination, do not remove in conventional water treatment processes thus can be entered to distribution systems and cause adverse health effects. ultraviolet radiation (uv) can be used as a method of inactivating for these organisms. this cross sectional study was done to inv...

Journal: :Nuclear Technology & Radiation Protection 2022

The results of the development modern precision monitors alpha, beta and gamma ray radiation for setting up early warning systems radioactive contamination in atmosphere rapid assessment emerging threats, are presented. Proportional counters, scintillation SrI (Eu) crystals semiconductor Si, CdZnTe, HPGe detectors used 2 development. designed provide information both on dose rate values real ti...

2014
Kristian Unger

Maximisation of the ratio of normal tissue preservation and tumour cell reduction is the main concept of radiotherapy alone or combined with chemo-, immuno- or biologically targeted therapy. The foremost parameter influencing this ratio is radiation sensitivity and its modulation towards a more efficient killing of tumour cells and a better preservation of normal tissue at the same time is the ...

ژورنال: سنجش و ایمنی پرتو 2020

Widespread use of ionizing radiation in medicine, industry, agriculture, education and research, the increasing production of nuclear waste and nuclear incidents, has exposed humans and organisms to this radiation. Despite the benefits of ionizing radiation, these beams can cause serious damage to living systems. Hence, the need for radiation protection actions requires accurate, fast, inexpens...

جمشیدی, خلیل , راستگو, مهدی , مرادی, روح الله , منصوری, حامد , منصوری, لیلا,

Improvement of resource use efficiency is a basic approach for sustainable agriculture. Applying intercropping systems, in which resources such as water, radiation and nutrients are used optimally, is one of these strategies. In order to evaluate radiation absorption and use efficiency in additive intercropping of maize-bean, an experiment was carried out in 2010, based on completely randomized...

Ali Shabestani Monfared John Kameron Mehrangiz Amiri

  Today, nuclear medicine has rapidly been developed so that in some cases, plays a unique role in diagnosis but unfortunalty in spite of diagnostic and therapeutic advantages, the term “NUCLEAR” can induce worries in patients and society. In this article, base on new documents, we intend to show that this worries has no scientific basis. To produce a realistic view, ...

Journal: :The Journal of the Institute of Television Engineers of Japan 1961

Journal: :Radiation Protection Dosimetry 2001

حیدری, علی, رستم پور, نیما, شرفی, علی اکبر, صالحی, ایرج, قاضی خانلو‌ثانی, کریم,

Background and Objective: Utilization of ionizing radiation in some surgery operations (especially orthopedic operations) is inevitable. One of the main occupational hazards of physicians and other personnel could be radiation exposure risks. This study aimed to evaluate the exposure doses received by operating room personnel in such surgery operations. Materials and Methods: 30 personnel of op...

Journal: :Symposium - International Astronomical Union 2004

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