TUFIC MADI FILHO
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Artigo IPEN-doc 28850 Determination of the bromine, manganese and antimony in Nicotiana tabacum solanaceae by using the neutron activation analysis technique2022 - MADI FILHO, TUFIC; FERREIRA, ELSON B.; BERRETTA, JOSE R.; PEREIRA, MARIA da C.C.Tobacco addiction has been mentioned as a leading cause of preventable illnesses and premature disability. Smoking is the main cause of lung cancer and one of the factors that most contribute to the occurrence of heart diseases, among others. The herbaceous species Nicotiana tabacum is a plant of the solanaceae family used for tobacco production. Some authors have conducted research about heavy metals and the toxicity of tobacco. It is, frequently, found in low concentrations in the ground, and superficial and underground waters, even though they do not have environmental anthropogenic contributions. However, with the increase of industrial activities and mining together with the agrochemical use of contaminated organic and inorganic fertilizers, an alteration of the geochemical cycle occurs. As a consequence, the natural flow of these materials increases and is released into the biosphere, where they are often accumulated in the superior layer of the ground, accessible to the roots of the plants. During planting and plant development, fertilizers and insecticides, including organochlorines and organophosphates, are used; consequently, the smoke from cigarette smoking presents various toxic substances, such as bromine (Br), manganese (Mn) and antimony (Sb), elements studied in this work. The procedures for the preparation of the samples were carried out in our laboratories and submitted to irradiation with thermal neutrons at Nuclear and Energy Research Institute (IPEN/CNEN-SP), in the Atomic Energy Institute IEA-R1 research reactor. The irradiated material was, then, analyzed by gamma spectrometry, using a high purity germanium detector (HPGe).Artigo IPEN-doc 28299 Growth of scintillating bromide-doped cesium iodide crystals for radiation detection2021 - ALVES, J.P.S.; M.FILHO, T.; PEREIRA, M.C.C.Artigo IPEN-doc 26849 Study and development of neutron detectors using doped CsI crystals2019 - MADI FILHO, TUFIC; PEREIRA, MARIA da C.C.; BERRETTA, JOSE R.; TOMAZ, LUCAS F.; MADI, MIRIAM N.The development of new radiation detectors using scintillation crystals, which increase response speed, dose and energy accuracy and, at the same time, the feasibility of simplifying and reducing costs in the production process are always necessary. In the CTR-IPEN laboratory, pure and doped CsI crystals were grown using the Bridgman technique. This work shows the obtained results using a doped CsI scintillator with the converters: Br, Pb, Tl, Li as alpha, beta, gamma and neutron detectors.Artigo IPEN-doc 20302 Scintillation characteristics of CsI crystal doped Br under gamma and alpha particles excitation2014 - PEREIRA, MARIA da C.C.; MADI FILHO, TUFICArtigo IPEN-doc 12118 Determination of heavy metals in eucalyptus grandis, manured with biosolid, by neutrons activation analysis2007 - MADI FILHO, TUFIC; MATEUS, NATALINA de F.; YAMASHITA, MARCELO T.Artigo IPEN-doc 19715 Inorganic scintillation crystals for neutron detection2013 - PEREIRA, MARIA da C.C.; MADI FILHO, TUFICArtigo IPEN-doc 15079 Energetic resolution study on pure and CsBr doped CsI under gamma excitations and alpha particles2009 - PEREIRA, MARIA da C.C.; MADI FILHO, TUFIC; HAMADA, MARGARIDA M.Artigo IPEN-doc 12033 Determination of chemical elements in Eucalyptus grandis, manured with biosolid, by neutrons activation analysis2007 - MATEUS, NATALINA de F.; MADI FILHO, TUFIC