نتایج جستجو برای: relative dose
تعداد نتایج: 684999 فیلتر نتایج به سال:
In this paper by use of mathematical modeling of an observer [14,15] the notion of relative information functional for relative dynamical systemson compact metric spaces is presented. We extract the information function ofan ergodic dynamical system (X,T) from the relative information of T fromthe view point of observer χX, where X denotes the base space of the system.We also generalize the in...
Background: We earlier reported that datumetine possesses binding affinity with NMDAR and that 14-day exposure to datumetine altered NMDAR signalling by mimicking glutamate toxicity. Here, we investigated the potential neuroprotective effect of a single shot of a low dose of datumetine administration in BALB/c mice. Results: Relative to Veh, datumetine downregulate the expression of CamKIIα i...
Background: In general, radiotherapy treatment planning is performed using the virtual bolus. It is necessary to investigate physical bolus in comparison to virtual one. Objectives: In the present study, first, radiological properties of superflab Gel bolus and Paraffin wax bolus was investigated in terms of their relative electron density. Then, dosimetric performance of both the bolus (...
در این کار در اولین بخش از چهار عنصر سنگین شامل: سرب ،جیوه، تانتالیم و تنگستن بعنوان ماده هدف در فرآیند تلاشی در یک راکتور adsاستفاده شد و با کمک مدل آبشار درون هسته ای bertini (inc- bertini)، محاسبات مربوط به فرآیند تلاشی ماده هدف برای پروتون هایی در بازه انرژی بین 115mev تا5gev انجام شد. طبق نتایج بدست آمده از این مدل برای این چهار عنصر سنگین، تنگستن بیشترین تعداد نوترون را تولید می کند و بعن...
The present work compared the relative absorbed dose of some dosimetric materials, for energies 250 kV and 6 MV, using PENELOPE MNCPX codes. composition each material GD-301, TLD-100, MAGIC, MAGAT were simulated disposed in a phantom filled with water following reference conditions recommended by TRS-398 protocol. Percentage depth was used as parameter comparison. Since obtained results both co...
Thallium doped calcium fluoride (CaF2:Tl) nanoparticles were produced for the first time by using the hydrothermal method. X-ray diffraction (XRD) and scanning electron microscope (SEM) were utilized to analyze the synthesized material. The particle size of about 45 nm was evaluated using XRD data which was supported by the SEM images. Thermoluminescence glow curve of this nanophosphor exhibits...
Introduction: According to the literature, optical coherence tomography (OCT) can be used measure radiation absorbed dose. This study was carried out to design a computed tomography system for the calculation of absorbed dose and optimization of dose delivery in radiotherapy using gel dosimeters. Material and Methods: An advanced charge-coupled device based OCT system was developed in laborator...
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