نصری نصرآبادی, مهدی
دانشگاه اصفهان
[ 1 ] - محاسبات نوترونیک قلب رآکتور VVER-1000 بوشهر و بررسی ارزش میله کنترل توسط کد MCNPX
In this research, required information to simulate and perform neutronic calculations for Bushehr nuclear power plant using the MCNPX code was provided. The results of the code were verified with at least one of the operational data from the reactor. In this work, by writing and implementing a comprehensive program to solve the equations of statistical distribution, neutron flux was obtained an...
[ 2 ] - شبیه‌سازی حفاظی چندلایه برای یک چشمه استوانه‌ای 241Am-Beبه‌منظور کاهش هرچه بیشتر دز معادل نوترون با استفاده از کد MCNP5
In order to simulate neutron shields, MCNP5 calculation code was used and three types of homogeneous and separated shield multilayer arrangement, irradiated with 241Am-Be neutron sources were investigated. In these shields, the polyethylene (C2H4) and polystyrene (C8H8) were used as moderator material, and the boron carbide (B4C), as a thermal neutron absorber material and stainless steel as a ...
[ 3 ] - اندازه گیری سطح عنصر سلنیوم در خون بیماران مبتلا به مولتیپل اسکلروزیس در شهر اصفهان
Background: Multiple Sclerosis (MS) is an autoimmune disease, resulting in chronic inflammatory lesion of the nerve or destruction of myelin, the white substance of the brain, spinal cord and optic nerves. This disease, like other autoimmune diseases are more common among young women in a way that most young people are affected with it. The disease affects older aged men in and is d...
[ 4 ] - اندازه‌گیری سطح عنصر سلنیوم در خون بیماران مبتلا به مولتیپل اسکلروزیس در شهر اصفهان
Background: Multiple Sclerosis (MS) is an autoimmune disease, resulting in chronic inflammatory lesion of the nerve or destruction of myelin, the white substance of the brain, spinal cord and optic nerves. This disease, like other autoimmune diseases are more common among young women in a way that most young people are affected with it. The disease affects older aged men in and is diagnosed in ...
[ 5 ] - ارزیابی پرتوزایی طبیعی در نمونه‌های خاک کناره‌های رودخانه دز در استان خوزستان
Geographical features of each region of the world affect the activity concentration of natural radionuclides such as uranium, thorium and potassium. In this study, 26 soil samples were randomly collected from sides of the Dez River and transferred to the Laboratory for preparation. Activity concentration of natural radioactive materials was measured using p-type HPGe detector with a 38% relativ...
[ 6 ] - بررسی چگالی ترازهای انرژی هسته‌های اگزوتیک
Nuclear level density (NLD) is one of the properties of nuclei with widespread applications in astrophysics and nuclear medicine. Since there has been little experimental and theoretical research on the study of nuclei which are far from stability line, studying NLD for these nuclei is of crucial importance. Also, as NLD is an important input for nuclear research codes, hence studying the metho...
[ 7 ] - Calculation of nuclear level density parameter as a function of tmperature and mass number
Nuclear level density is one of the most important concepts in nuclear physics; basically, it is the key in dealing with nuclear statistical problems. This quantity plays an essential role in the statistical calculation of reactor physics, astrophysics, researches in the average energy of heavy- ion collision and calculations related to neutron evaporation and other applications. This quantity ...
[ 8 ] - stimate bowtie filter shape in PET/CT scan with TLD
Introduction: The CT machine utilizes a bowtie filter to shape the X-ray beam and remove lower energy photons. Configuration of this bowtie filter is complex and its geometry is often not available in detail. It causes the CT dose index (CTDI) be with the different values in measurement versus Monte Carlo simulation studies and other analytical calculations. It is important esp...
[ 9 ] - بررسی پارامترهای جذب دینامیکی گاز زنون بر روی جاذب‌های کربن فعال و غربال مولکولی 5Å
رفتار جذبی دینامیکی کربن فعال دانه ای و غربال مولکولی 5Å در فرایند جذب گاز زنون مقایسه شده است. این امر به منظور طراحی و ساخت محفظهی حاوی بستر جاذب گاز زنون با مشخصه های بهینه انجام شده است. برای اندازه گیری زنون در خروجی ستون حاوی جاذب از دستگاه کروماتوگرافی مجهز به آشکارساز رسانندگی گرمایی استفاده شده است. تأثیر نرخ جریان گاز در دمای ثابت بر جذب دینامیکی و همچنین تغییرات دما در نرخ جریان...
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