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Johan A E Noor
Jurusan Fisika, Fakultas MIPA, Universitas Brawijaya, Malang
Environmental Science

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Effects of Turmeric (Curcuma domestica) in Maintaining Reduced Raw Cattle Protein Levels Unggul P Juswono; Johan A E Noor; Avika Dyah Respati
Natural B, Journal of Health and Environmental Sciences Vol 2, No 2 (2013)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1390.023 KB) | DOI: 10.21776/ub.natural-b.2013.002.02.15

Abstract

A biological tissue that exposed by gamma radiation is known to be ionized that cause heavily damage due to the presence of free radicals. One of the damage may occured in the protein molecules which cause decreaseing of protein level of the beef so it needs a research on the effect of turmeric yellow (as antioxidant) in the maintaining of the protein level of the beef. In this research, the sample were meats without added turmeric as a control and the other were meats added with turmeric and then irradiated using radioactive elements Cs-137 and Co-60. Protein levels were tested using the standart method to analyze the levels of soluble protein. The results showed that the addition of turmeric had an influence to keep the protein value of beef. This situation suggests that turmeric is an antioxidant that is very good in counteracting free radicals.
Thermal Neutron Flux Measurements at Room Treatment LINAC iX 15 MV Risalatul Latifah; Johan A E Noor; Bunawas Bunawas
Natural B, Journal of Health and Environmental Sciences Vol 2, No 2 (2013)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1418.117 KB) | DOI: 10.21776/ub.natural-b.2013.002.02.14

Abstract

Linac is operated at above 10 MV will generate secondary radiation in the form of neutron emission from the reaction of the high photon energy linac striking the material components of linac such us targets, collimators and filters. Secondary radiation will increase the probability of the secondary cancer risk in patients due to increasing the dose of radiation received. This study evaluated the thermal neutron flux at the indoor spatial operated 15 MV linac using foil activation method. A total of 14 Indium-115 foil placed in the treatment room were exposed to 15 MV linac plane for 1 minute. Results showed the highest flux are around isocenter . With the flux value of additional dose due to the neutron flux at Sv/menit. FLux decreases as distance function. Related to radiation protection efforts for radiation workers, the contribution coming from the neutron dose necessary acted upon by adding shielding on the door.
Co-Authors Avika Dyah Respati Bunawas Bunawas Risalatul Latifah Unggul P Juswono