نتایج جستجو برای: simulation with monte carlo

تعداد نتایج: 9413575  

Journal: :journal of physical & theoretical chemistry 2008
z. varmaghani f. mollaamin l. pishkar b. khalili hadda

medicinal chemistry depends on many other disciplines ranging from organic chemistry andpharmacology to computational chemistry. typically medicinal chemists use the moststraightforward ways to prepare compounds. the validation of any design project comes from thebiological testing.studies of the binding site of vinblastine by a single cross—linking experiment identified it asbeing between resi...

Journal: :مهندسی قدرت ایران 0
ali saberi noughabi university of birjand, iran nader hatefi torshizi university of birjand, iran hamidreza najafi university of birjand, iran

in this paper, an interval approach is presented to achieve perfect selectivity and maximum sensitivity in distance relay zones, considering uncertainties. for this purpose, first, the uncertainties affecting the settings of the three zones of a distance relay are discussed. then, by using the monte-carlo simulation, the uncertainties are modelled and the impedances seen by the distance relay a...

Journal: :iranian journal of radiation research 0
s.h. mousavie anijdan department of medical physics and engineering, school of medicine, tehran university of medical sciences, tehran, iran a. shirazi department of medical physics and engineering, school of medicine, tehran university of medical sciences, tehran, iran s.r. mahdavi department of medical physics and engineering, school of medicine, tehran university of medical sciences, tehran, iran a. ezzati department of energy engineering, sharif university of technology, tehran, iran b. mofid department of radiation oncology, shahid beheshti university of medical sciences, tehran, iran s. khoei department of medical physics and engineering, school of medicine, tehran university of medical sciences, tehran, iran

background: gold nanoparticles (gnps) have been shown as a good radiosensitizer. in combination with radiotherapy, several studies with orthovoltage x-rays have shown considerable dose enhancement effects. this paper reports the dose enhancement factor (def) due to gnps in 18 megavoltage (mv) beams. materials and methods: different geometrical 50-nm gnps configurations at a concentration of 5 m...

Journal: :iranian journal of radiation research 0
e.m.t. harki salahaddin university, college of science, kurdistan of iraq, erbeel, iraq a.t. al-kinani al-mustenserya university, college of medicine, baghdad, iraq and supreme council for environment and natural reserves, doha, qatar

background: exposure conditions in ct examinations are quite different from conventional xray. in ct examination higher dose is given to patient in comparison with the dose in other diagnostic examinations. in order to calculate organ effective dose in chest ct, monte carlo simulation has been used in this study. materials and methods: the impact survey data were used to determine the parameter...

Journal: :journal of medical signals and sensors 0
daryoush shahbazi-gahrouei saba ayat

introduction: radioiodine therapy is an effective method for treating thyroid cancer carcinoma, but it has some affects on normal tissues, hence dosimetry of vital organs are important to weigh the risks and benefits of this method. the aim of this study is to measure the absorbed doses of important organs by mcnp (monte carlo n particle) simulation and comparing the results of different method...

Journal: :journal of biomedical physics and engineering 0
m robatjazi tehran university of medical sciences k tanha bushehr university of medical sciences s r mahdavi iran university of medical sciences h r baghani shahid beheshti university h r mirzaei shahid beheshti university of medical sciences m mousavi tehran university of medical sciences

background: one of the main problems of dedicated iort accelerators is to determine dosimetric characteristics of the electron beams. monte carlo simulation of iort accelerator head and produced beam will be useful to improve the accuracy of beam dosimetry. materials and methods: liac accelerator head was modeled using the beamnrcmonte carlo simulation system. phase-space files were generated a...

آقامیری, سید محمود رضا, باغانی, حمیدرضا, حیدرلو, نعمت‌الله, مهدوی, سید ربیع,

Intraoperative electron radiotherapy is one of the radiotherapy methods that delivers a high single fraction of radiation dose to the patient in one session during the surgery. Beam shaper applicator is one of the applicators that is recently employed with this radiotherapy method. This applicator has a considerable application in treatment of large tumors. In this study, the dosimetric charact...

Journal: :Journal of Thermophysics and Heat Transfer 1992

Journal: :Journal of Instrumentation 2022

Abstract Silicon photomultipliers (SiPMs) replace photomultiplier tubes (PMTs) for the detection of light in many applications, particularly high energy physics and medical imaging. We describe a flexible implementation SiPM model GATE Monte Carlo simulation platform, which is based on noise description proposed by Rosado Hidalgo, an easy effective method to determine instantiate with simple me...

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