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All Journal JOURNAL OF COASTAL DEVELOPMENT Progressive Physics Journal
Eko Hidayanto
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Astronomy Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Health Professions Materials Science & Nanotechnology Physics

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TRITIUM TRANSFER AND CONCENTRATIfON IN THE OCEAN Eko Hidayanto
JOURNAL OF COASTAL DEVELOPMENT Vol 8, No 1 (2004): Volume 8, Number 1, Year 2004
Publisher : JOURNAL OF COASTAL DEVELOPMENT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (86.757 KB)

Abstract

Environmental transport models have been developed for evaluation of radiation doses from tritium released into the atmosphere. Recently, models contain not only inhalation and skin absorption as routes of tritium transfer from the atmosphere to humans, but also the ingestion pathway. Tritium releasing to the environment is contribute to added tritium concentration in the ocean. This paper describes the tritium transfer from the environment to the human body and the possible health effects if it is taken inside the body, the factors which influence the differences of tritium concentrations in the coastal seawater, and the formula of the tritium concentration balance in the ocean surface.
Studi Penggunaan Bolus Berbahan Silicone Rubber terhadap Dosis Permukaan pada Radioterapi Berkas Elektron Gede Wiratma Jaya; Heri Sutanto; Eko Hidayanto; Galih Puspa Saraswati
Progressive Physics Journal Vol 1 No 1 (2020): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (394.408 KB) | DOI: 10.30872/ppj.v1i1.561

Abstract

Radiotherapy is a method of externally cancer therapy using a Linear Accelerator (LINAC) tool. LINAC can produce photon and electron beam energy which will be used to treat cancer according to the position of the cancer in the patient's body. When using an electron beam to treat cancer on the surface of the skin, it is found that there is a lack of a radiation dose. The use of bolus with Silicone Rubber (SR) material is a solution to provide an increase in radiation doses in the surface area of the skin. In this study SR boluses were made using the sol-gel method with dimensions of 17 cm x 17 cm x 1 cm. The SR Bolus was illuminated with an applicator field area of 10 cm x 10 cm and energy variations of 5 MeV and 7 MeV. The surface dose produced at the moment without using a bolus for 5 MeV and 7 MeV energy is 1.60 Gy and 1.61 Gy. When using bolus, the surface dose of 5 MeV and 7 MeV energy is 2.12 Gy and 2.06 Gy. From the results of this study it can be concluded that the use of SR bolus can increase a higher surface dose without using bolus.
Co-Authors Galih Puspa Saraswati Gede Wiratma Jaya Heri Sutanto