Results 31 to 40 of about 105,114 (238)

Control rods effect analyses on thermo-hydraulic safety parameters in TRR [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2020
In this study, the effect of control rods on TRR safety parameters was investigated in both cases of static and transient behavior. In this paper, the effect of the control rods movements (70%) on the power peaking was used in the form of the normalized ...
A. Lashkari   +2 more
doaj   +1 more source

Experimental study of structural, mechanical, and nuclear properties of neutron absorber composites containing boron [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2022
The present study investigated the structural, mechanical, and nuclear properties of two types of polymeric and metallic composites containing boron carbide particles.
M.J. Nasr Isfani   +2 more
doaj   +1 more source

Thermal hydraulic analysis and estimation of hydrogen generation in severe accidents in WWER1000 [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2022
Severe Accidents Management (SAM) in nuclear power plants is an important safety issue. SAMs require assessing the thermal-hydraulic conditions of the nuclear reactor during the accident.
R. Gharari   +4 more
doaj   +1 more source

Comparison between unipolar and bipolar single phase grid-connected inverters for PV applications [PDF]

open access: yes, 2007
An inverter is essential for the interfacing of photovoltaic panels with the AC network. There are many possible inverter topologies and inverter switching schemes and each one will have its own relative advantages and disadvantages.
Ahfock, Tony, Bowtell, Les
core   +5 more sources

Evaluation of fast fission factor in a typical pool type research reactor [PDF]

open access: yesJournal of Nuclear Research and Applications, 2022
One of the important factors of a nuclear reactor core is the fast fission factor.  This paper calculates this parameter based on space and energy-dependent method using the PTRAC card of MCNPX code. Tehran research reactor (TRR) is taken as a case study,
M. Arkani, S. Khakshournia
doaj   +1 more source

Evaluation of the produced 177Lu-specific activity via direct and indirect methods using Tehran Research Reactor

open access: yesمجله علوم و فنون هسته ای, 2023
The present research investigates the feasibility of producing the radionuclide Lutetium-177 ( 177 Lu) at the Tehran research reactor, TRR. 177 Lu, with suitable nuclear decay characteristics and good chemical behavior, is an ideal therapeutic ...
S. Shirvani Arani   +2 more
semanticscholar   +1 more source

Effect of nano-particle coating techniques of SiO2 on improvement of Critical Heat Flux [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2020
In this study, two methods of nano-particle coating, by boiling and electrophoretic, have been used to investigate the effect of surface modification on the Critical Heat Flux of stainless steel plates.
A. Rahimian   +4 more
doaj   +1 more source

Design of irradiation box of topaz stones and its neutronic and thermal analysis in Tehran Research Reactor [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2022
This paper aims to design a suitable irradiation box of topaz stones and improve the neutronic parameters by maintaining the necessary conditions for their cooling in Tehran Research Reactor (TRR).
Z. Zarei   +3 more
doaj   +1 more source

Assessment of Horizontal Steam Separator Two Phase Flow arameters and Performance in NPPs with Utilization of Computational Fluid Dynamic [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2022
In this research, utilization of typical moisture separation process in conventional steam cycle power plants, for NPPs are recommended; and by applying CFD, two-phase flow of this process is simulated.
A.H. Vosoughi, R. Saberi, K. Sepanloo
doaj   +1 more source

Investigation of 99Mo potential production via UO2SO4 liquid target irradiation in a 5 MW nuclear research reactor

open access: yesNukleonika, 2017
The activation method for 99Mo production in comparison to fissionable target irradiation in research reactors is less preferable. Therefore, 99Mo yield using UO2SO4 samples was theoretically investigated.
Gholamzadeh Zohreh   +4 more
doaj   +1 more source

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