نتایج جستجو برای: gels radiometry dose

تعداد نتایج: 334116  

Journal: :iranian journal of radiation research 0
h. foroutan nuclear science research school, nuclear science and technology institute, tehran, iran m. hodabakhsh nuclear science research school, nuclear science and technology institute, tehran, iran m. rabbani nuclear science research school, nuclear science and technology institute, tehran, iran

background: a dressing often covers the wound to accelerate its healing. hydrocolloid-type dressing to give better conditions for healing has been developed consisting of gelatin, pectin, water and hydrophilic polymer which promote healing. in recent years, much attention has been focused on the research and development of polymer hydrogels as biomaterials, such as contact lenses, wound dressin...

Journal: :Physics in medicine and biology 2009
Remo A Crescenti Jeffrey C Bamber Nigel L Bush Steve Webb

Radiation-sensitive polymer gels for clinical dosimetry have been intensively investigated with magnetic resonance imaging (MRI) because the transversal magnetic relaxation time is dependent on irradiation dose. MRI is expensive and not easily available in most clinics. For this reason, low-cost, quick and easy-to-use potential alternatives such as optical computed tomography (CT), x-ray CT or ...

Journal: :iranian journal of radiation research 0
mahbod sedaghat department of medical physics, tehran university of medical sciences, tehran, iran m.h. zahmatkesh r. jaberi sh. akhlaghpoor m. allahverdi

abstractbackground: polymer gels are an emerging new class of dosimeters which are being applied to the challenges of modern radiotherapy modalities. research on gel dosimetry involves several scientific domains, one of which is the imaging techniques with which dose data is extracted from the dosimeters. in the current work, we present our preliminary results of investigating capability of x-r...

1997
H. C. Rosu

Following Grischuk and Sidorov [Phys. Rev. D 42 (1990) 3413] in putting the Bogolubov-Hawking coefficient of Schwarzschild black-holes in the squeezing perspective, we provide a short discussion of Schwarzschild black holes as radiometric standards. In this work I will give arguments in favour of taking Schwarzschild black holes (SBH) as blackbody simulators, most probably the best ones. Even b...

2004
Samuel Baylis Thomas Weller Rick Connick Charles Baylis

The purpose of the radiometer project was to research and demonstrate the working principles of a radiometer system. The radiometer design team was composed of five members, each contributing a specific component to the final system. A radiometer system is a device that detects microwave emissions from noise producing objects [1]. These noise sources are typically objects that emit heat and the...

Journal: :journal of advances in computer research 0
touraj mohammadpour department of computer engineering, ayatollah amoli branch, islamic azad university, amol, iran mehdi yadollahi department of computer engineering, ayatollah amoli branch, islamic azad university, amol, iran amir massoud bidgoli assistant professor, b.sc., m.sc., ph.d. (manchester university), mieee, tehran north branch, islamic azad university, tehran, iran habib esmaeelzadeh rostam department of computer engineering, ghaemshahr branch, islamic azad university, ghaemshahr, iran

multiple traveling salesman problem (mtsp) is one of the most popular operation research problem and is known as combinatorial optimization problems. mtsp is an extension version of the famous and widely used problem named traveling salesman problem (tsp). because of its benefices in various domains, many researchers have tried to solve that, and many methods have proposed so far. mtsp is a np-...

ژورنال: سنجش و ایمنی پرتو 2019

Radiotherapy includes all methods that can deliver a particular amount of ionizing radiation to malignant tissues, assuming that minimal damage hurts healthy tissues. We are looking for a valuable and reliable method to measure absorbed dose and the ability to measure the distribution of absorbed dose in three dimensions which nowadays is one of the three-dimensional dosimetry methods in using ...

SA Mortazavi

Mucosa-adhesive gels can be used as a useful mean of delivering drugs to or via mucosal membranes, and in particular buccal mucosa. Carbomers are among the best mucosa-adhesive materials known. The aim of this study was to compare the results obtained from the mucosa-adhesive strength of aqueous gels containing Carbomers, either alone or in combination, to the data obtained from assessing the d...

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