Water availability in Mount Ciremai National Parks (MCNP) is influenced by sustainability of the vegetation. Therefore, tree regeneration around water springs area needs to be investigated maintain ecosystem future. The purpose this study was analyzed and identify natural seedlings Seda Block MCNP. collections vegetation abiotic data carried out on 9 sample plots measuring 3 m × which purposive...

annually, many people are irradiated for diagnostic and therapeutic purposes. assessment of radiation dose and its related risks to patients are important issues in radiation protection dosimetry. the complex mathematical calculations of the absorbed and effective doses are now done with computers. the calculations are performed with the help of anthropomorphic computational models of human bod...

Double heterogeneity of randomly located pebbles in the core and Coated Fuel Particles (CFPs) in the pebbles are specific features in pebble bed reactors and usually, because of difficulty to model with MCNP code capabilities, are neglected. In this study, characteristics of HTR-10, Tsinghua University research reactor, are used and not only double heterogeneous but also truncated CFPs and Pebb...

A great challenge in simulations in the area of radiotherapy is to character the source, since the equipment’s manufacturers don’t provide specifics information about this. This work presents an empiric method for characterization of the ray-X beams of 6,0 MV and 10 MV originating from a linear accelerator of the mark Varian model 2100C. The experimental values of the percentage of deep dose (P...

Pohang Neutron Facility (PNF) is a pulsed neutron facility based on the 100-MeV electron linear accelerator. It was constructed for nuclear data production in Korea, and it consists of an electron linear accelerator, a watercooled Ta target with a water moderator and a time-offlight path with an 11 m length. The 100-MeV electron linac uses a thermionic RF-gun, an alpha magnet, four quadrupole m...

In nuclear medicine and particularly in internal radiotherapy, one of the major challenges is to determine the dose for each patient. Current internal dosimetric estimations are based on the Medical Internal Radiation Dose (MIRD) formalism and use standard mathematical models. These standard models are often far from a given patient morphology and do not allow to perform patient-specific dosime...

The neutron energy spectra have been calculated in the fuel region, inner and outer irradiation sites of the zero power research reactor using the MCNP-4C code and the combination of the WIMS-D/4 transport code for generation of group constants and the three-dimensional CITATION diffusion code for core analysis calculations. The neutron energy spectrum has been divided into three regions and co...

To identify effects of transarterial radioembolization (TARE) with Yttrium-90 resin microspheres on histopathological analysis. All patients who underwent TARE to any liver tumor followed by a resection were included in this retrospective, IRB-approved study (n = 26). was performed using 3-day pre-calibration 90Y SPECT/CT or PET/CT. Pathologic analysis board certified pathologist 34 years exper...