نتایج جستجو برای: dose step up
تعداد نتایج: 1429827 فیلتر نتایج به سال:
The new step-up capacitor grid is connected to the solar photovoltaic (PV) having a voltage balancing converters. It’s suitable for Neutral-Point-clamped (NPC) Multilevel Inverter (MI). To balance DC link effectively we've got use switched capacitors. By using converter, we will enlarge higher levels and also by boosting input are able see upper of without magnetic components. This attribute al...
This paper presents a novel multi-port DC/DC converter which is suitable to be used as the interface of hybrid renewable energy systems. The converter contains three unidirectional power flow ports which two of them are input ports and are connected to two independent energy sources while the third one is the output port that feeds a standalone load. Furthermore, the proposed converter contains...
This work proposes a high step-up interleaved dc/dc topology utilizing a VM (voltage multiplier) cell suitable for PV applications. The VM cells D/C (Diode/Cap.) are cascaded among the phases to approach a high voltage gain. Besides, the voltage converting ratio of the presented structure can be improved by extending the VM cells and it also leads to drop in the normalized voltage stress throug...
Contralateral breast dose from primary breast irradiation has been implicated in the risk of second breast malignancies. In the radiotherapy departments of Iran, based on oncologist’s and physicist’s viewpoint, a special technique and set-up may be used for treatment of chest wall in mastectomized patient. The present study compared three different breast treatment techniques and set-up use...
Introduction: Utilization of computed tomography (CT) scans is increasing annually. This study aimed to reduce the absorbed dose of sensitive organs in the head (eye lenses and thyroid) and to assess changes in resultant images quality in head scans when the radiation dose is decreased. Material and Methods: An anthropomorphic phantom was examined with head protocols in both helical and sectio...
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