GERALD SARAIVA SILVA
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Artigo IPEN-doc 21314 Radon exposure at a radioactive waste storage facility2014 - MANOCCHI, F.H.; CAMPOS, M.P.; DELLAMANO, J.C.; SILVA, G.S.The Waste Management Department of Nuclear and Energy Research Institute (IPEN) is responsible for the safety management of the waste generated at all internal research centers and that of other waste producers such as industry, medical facilities, and universities in Brazil. These waste materials, after treatment, are placed in an interim storage facility. Among them are 226Ra needles used in radiotherapy, siliceous cake arising from conversion processes, and several other classes of waste from the nuclear fuel cycle, which contain Ra-226 producing 222Rn gas daughter. In order to estimate the effective dose for workers due to radon inhalation, the radon concentration at the storage facility has been assessed within this study. Radon measurements have been carried out through the passive method with solid-state nuclear track detectors (CR-39) over a period of nine months, changing detectors every month in order to determine the long-term average levels of indoor radon concentrations. The radon concentration results, covering the period from June 2012 to March 2013, varied from 0.55 ± 0.05 to 5.19 ± 0.45 kBq m−3 . The effective dose due to 222Rn inhalation was further assessed following ICRP Publication 65.Artigo IPEN-doc 10609 Synthesis and biological evaluation of boronated polyglycerol dendrimers as potential agent for neutron capture therapy2005 - SILVA, G.S.; CAMILLO, M.A.P.; HIGA, O.Z.; PUGLIESI, R.; FERNANDES, E.G.R.; QUEIROZ, A.A.A.Artigo IPEN-doc 10507 Alginate-poly(vinyl-alcohol) core-shell microspheres for lipase immobilization2004 - SILVA, G.S.; FERNANDES, L.R.V.; HIGA, O.Z.; VITOLO, M.; QUEIROZ, A.A.A.Artigo IPEN-doc 17920 Physicochemical and microbial properties of boron-complexed polyglycerol-chitosan dendrimers2006 - QUEIROZ, ALVARO A.A. de; ABRAHAM, GUSTAVO A.; CAMILLO, MARIA A.P.; HIGA, OLGA Z.; SILVA, GERALD S.; FERNANDEZ, MARIA DEL M.; ROMAN, JULIO S.Artigo IPEN-doc 16456 Alginate-poly(vinyl alcohol) core-shell microspheres for lipase immobilization2006 - QUEIROZ, ALVARO A.A. de; PASSOS, ESDRAS D.; ALVES, SDNEI de B.; SILVA, GERALD S.; HIGA, OLGA Z.; VITOLO, MICHELE