Navegação Eventos - Resumos por Autores IPEN "DAMATTO, S.R."

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  • IPEN-DOC 22326

    TEIXEIRA, L.F.L.; REMOR, M.B.; DAMATTO, S.R. ; SAMPAIO, S.C.; SCAPIN, M.A. . 210Pb geochronology and chemical characterization of sediment cores from lakes of the Parana River alluvial plain. In: INTERNATIONAL CONFERENCE ON RADIOECOLOGY AND ENVIRONMENTAL RADIOACTIVITY, 3rd, September 7-12, 2014, Barcelona, Espanha. Abstract... 2014.

    Palavras-Chave: age estimation; concentration ratio; continental crust; floods; fluorescence; hydrofluoric acid; lakes; lead 210; neutron activation analysis; ponds; radioecological concentration; rivers; sediments; wetlands

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  • IPEN-DOC 24586

    RODRIGUES, C.E.C. ; NOGUEIRA, P.R. ; DAMATTO, S.R. ; MADUAR, M.F. ; ALENCAR, M.M. ; PECEQUILO, B.R.S. . An overview of the gaseous radioactive effluents control and radioactivity assessment in the atmospheric air at IPEN’S campus. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. Abstract... São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 66-66.

    Abstract: The routine operation of a nuclear or radioactive installation generally involves the release of radioactive liquid and/or gaseous effluents. At the Nuclear and Energy Research Institute – IPEN there are several nuclear and radioactive facilities, developing activities in the field of nuclear energy. IPEN’s Radioprotection Management has established a radioactive effluent sampling program to determine the amount of radioactive material (source term) released into the environment and to detect immediately any unplanned release above the pre-established operating limits. The IPEN Environmental Radiological Monitoring Program – ERMP evaluates the levels of radioactivity to which individuals of the public are exposed through the analysis of atmospheric samples; the main objective of an ERMP is the confirmatory radiological control, which estimates whether the assumptions made in the calculation of the dose, from the source term, are correct. The objective of the present work is to present the gaseous radioactive effluents control and the radioactivity assessment in the atmospheric air at IPEN’s campus, since there were implanted in 1988 at the Laboratory of Environmental Radiometry of IPEN. In both, gaseous radioactive effluents control and radioactivity assessment in the atmospheric, cellulose and charcoal cartridge filters are analyzed by gamma spectrometry – HPGe weekly, from the IPEN’s radioactive facilities, Accelerators and Cyclotron Center, IEA-R1 Research Reactor Center, Radiopharmacy Center - Building I and II and each 15 days collected from three air samplers located near the nuclear and radiation facilities of IPEN, respectively. The radionuclides determined in the majority of the samples throughout the sampling period were 131I, 18F and 67Ga.

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  • IPEN-DOC 24569

    SANTOS, T.O. ; SILVA, C.F. ; DAMATTO, S.R. . Assessment of trace elements concentration in Nicotiana tabacum L., Virginia variety. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. Abstract... São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 49-49.

    Abstract: Tobacco plant Nicotiana tabacum L. is used in the manufacture of all derivate products and the chemistry composition resulting of smoking varies with the kind of tobacco leaves, how they are grown, their original region, the features of preparation and the temperature variations resulting from the incomplete combustion of tobacco. There is a lack of information about the radiological and chemistry characterization of the tobacco plant in international and mainly Brazilian literature. The objective of this study was to determine the concentration of the elements As, Ba, Br, Ca, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Se, Sm, Ta, Tb, Th, U, Yb and Zn in the Nicotiana tabacum L., Virginia variety, by the Instrumental Neutron Activation Analysis (INAA) technique. The INAA was used in the Virginia variety cultivated at IPEN and the same variety cultivated in the city of Arvorezinha, Rio Grande do Sul by a regular producer. The samples cultivated in Arvorezinha were separated in soil, root, stem and leaves and the samples cultivated at IPEN were separated in substrate, root, stem and leaves. The results of rare earth elements showed a similar behavior among the plants, with higher results in soil and substrate and in the leaves. It was observed that the plants of the producers presented higher concentration of the studied elements when compared to the plants cultivated in IPEN. These higher concentrations are probably due to the addition of fertilizers to the producer’s crop and also because these elements can accumulate in the soil due to many years of use, different from the substrate used in the IPEN cultivation.

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  • IPEN-DOC 30055

    DAMATTO, S.R. ; DOMINGOS, R.M. ; TEIXEIRA, L. ; ISIKI, V.L. ; ALENCAR, M.M. ; LEONARDO, L. . Challenges in measuring 22Na in rainfall by gamma spectrometry in the city of São Paulo, Brazil. In: INTERNATIONAL CONFERENCE ON ENVIRONMENTAL RADIOACTIVITY, 7th, September 17-22, 2023, Seville, Spain. Abstract... Seville, Spain: Universidad de Sevilla, 2023. p. 204-204.

    Abstract: Na-22 is a naturally occurring radionuclide of cosmogenic origin with half live of 2.6 years, being a beta and gamma emitter (541keV and 1274.5keV, respectively). This cosmogenic radionuclide is mainly formed when cosmic rays interact with argon nucleus, occurring a fragmentation of this nucleus. The process of production of 22Na occur continually in upper atmosphere, lower stratosphere and rainfall is the predominantly process of deposition of cosmogenic radionuclides in terrestrial surface. Na-22 together with 7Be (T1/2) = 53.3 d, gamma ray 476.7keV) can be used as tracers in studies of aerosol transport between layers of the atmosphere. At the same time 22Na is rarely used in these studies due to its extremely low abundance in rainfall. The objectives of this work were to present the first results 22Na activity concentration measured in rainfall collected at the IPEN campus located in São Paulo, Brazil. Large volumes of rainfall samples were collected from October 2022 to April 2023, totaling 20 samples, and 22Na activity concentration was measured by non-destructive gamma-ray spectrometry using a coaxial Be-layer HPGe detector with 46% relative efficiency and associated electronic devices and live counting time varying from 250,000 s to 500,000 s; the rainfall volumes ranged from 14 L to 164 L. The collection container was previously acidified with 1mol L-1 HNO3 to avoid loss of radionuclide by absorption on the container walls. The first eight rainfall samples were collected in a catchment area of 1m2, which was not enough to measure the radionuclide, since all the determined results were smaller than the detection limit of the methodology. After these results, it was decided to increase the catchment area by collecting rainfall samples from the roof of the laboratory building, in an area of 78 m2; the container used to collect samples from this area was also acidified with 1 mol L-1 HNO3. In this new area, 12 rainfall samples were collected, however, as the volume of rainfall was very large in the rains collected, only one sample was acidified, a rainfall of 2 mm and a volume of 98 L; in the other samples, the large volume of rain did not allow the water to become acidic because the collection container overflowed with water. In the acidified rainfall sample, the result of 0.725 ± 0.252 Bq L-1 was determined for the radionuclide 22Na. With this result, it is possible to prove the importance of both the catchment area and the acidulation of the sample in the determination of trace radionuclides in rainfall samples.

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  • IPEN-DOC 13519

    SILVA, PAULO S.C. ; DAMATTO, S.R. ; FAVARO, DEBORAH I.T. ; MAZZILLI, BARBARA P. . Determination of elementary basal levels in sediments of Baixada Santista, Sao Paulo, Brazil. In: SOUTH PACIFIC ENVIRONMENTAL RADIOACTIVITY ASSOCIATION CONFERENCE, 8th, November 23-27, 2008, Christchurch, New Zealand. Abstract... 2008. p. 31.

    Palavras-Chave: brazil; basalt; sediments; pollution; multi-element analysis; neutron activation analysis

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  • IPEN-DOC 13505

    DAMATTO, S.R. ; SILVA, P.S.C. ; MAZZILLI, B.P. ; FAVARO, D.I.T. . Distribution of radionuclides from U and th series, trace elements and rare earths in bottom sediment samples from Sao Paulo state coast. In: INTERNATIONAL CONFERENCE ON NUCLEAR ANALYTICAL METHODS IN THE LIFE SCIENCES, 9th, September 7-12, 2008, Lisbon, Portugal. Abstract... 2008. p. A132.

    Palavras-Chave: uranium; thorium; elements; trace amounts; rare earths; sediments; sample preparation; coastal regions; brazil; cluster model

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  • IPEN-DOC 24532

    MENEGHINI, A.A. ; DAMATTO, S.R. . Elemental characterization using instrumental neutron activation analysis in mineral waters from Caxambu, MG. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. Abstract... São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 18-18.

    Abstract: Chemical composition of mineral water is the result of soil and water interaction and depends on the soil geology, because the chemical elements become part of these waters through the leaching and dissolution processes of soil. Mineral waters are defined as those that come from natural springs or that are artificially collected with chemical composition or physical chemical properties which imbues them with medicinal action that distinguishes them from ordinary water. According to the mineral summary of Departamento Nacional de Produção Mineral - DNPM, the consumption of mineral water has been increasing year by year, being in 2014 the global consumption 6.2% greater than in 2013 (which already had consumption 7.0% greater than in 2012), a fact that reinforces the importance of the characterization and regulation of the mineral waters. In thermal parks as Caxambu’s park, the waters are used as health therapy, diuretic waters, cathartic waters and anti-inflammatory waters. Parque das Águas of Caxambu, the largest mineral water park in the world, has 12 springs: Leopoldina, Beleza, Duque de Saxe, Princesa Isabel and Conde D’Eu, Dom Pedro, Viotti 1 and 2, Venâncio, Mayrink I, II and III and Ernestina Guedes and also a 60 m deep geyser. Thus, the main goal of this study was to perform a chemical characterization of these waters in which the elements Ba, Ca, Co, Cr, Cs, Eu, Fe, K, La, Na, Rb and Sb were found using Instrumental Neutron Activation Analysis – INAA technique. Mineral water samples were dried in a cellulose substrate and irradiated at the IEA-R1 reactor in which they were exposed for 6h to a thermal neutron flux of 1012 neutrons per cm2 per second. The results showed a similar behavior among the samples and it was possible to identify a higher concentration of Na, K and Fe and predominance of alkaline and alkaine earth metals in all samples. Further, Venâncio, Beleza, Ernestina springs and geyser showed the highest concentrations of these elements.

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  • IPEN-DOC 13512

    NISTI, M.B. ; SANTOS, A.J.G. ; PECEQUILO, B.R.S. ; MADUAR, M.F. ; ALENCAR, M.M. ; DAMATTO, S.R. . Fast methodology for time counting optimization in gamma-ray spectrometry based on preset minimum detectable amounts. In: INTERNATIONAL CONFERENCE ON NUCLEAR ANALYTICAL METHODS IN THE LIFE SCIENCES, 9th, September 7-12, 2008, Lisbon, Portugal. Abstract... 2008.

    Palavras-Chave: barium 133; cesium 134; cobalt 60; gamma spectroscopy; high-purity ge detectors; ruthenium 106; zinc 65

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  • IPEN-DOC 24556

    LEONARDO, L. ; SOUZA, J.M. ; DAMATTO, S.R. ; SURKOV, A.M. ; MADUAR, M.F. ; SILVA, A.R. . Inorganic chemical characterization of the soil and sediment from Taiaçupeba Reservoir, São Paulo. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. Abstract... São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 37-38.

    Abstract: Taiaçupeba reservoir, located in the state of São Paulo, Brazil, belongs to Producer System of Alto Tietê (Sistema Produtor Alto Tietê –SPAT) and it is responsible for water supply for about 3.1 million of people. The water quality of a reservoir became very important in the last decades due to the increase of environmental degradation of the soil and its several uses. Trace and major elements can accumulate in high levels in soil and sediment, and the study of its concentration can indicate if the ecosystem is polluted. Therefore, the study of soil profiles and sediment cores are an important tool for the understanding of geophysical and geochemical aspects of aquatic ecosystems. The objective of this work was to present the elements As, Ba, Br, Ca, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Ta, Tb, Th, U, Yb and Zn concentrations using Instrumental Neutron Activation Analysis (INAA) in four soil profiles and four sediment cores collected in the influence area of Taiaçupeba reservoir. To verify if these elements could be enriched and the ecosystem polluted the Enrichment Factor and the Geoacumulation Index were also used. Soil profiles were collected in trenches up to 2m deep and sampled every 5 cm; in the laboratory the samples were dried at room temperature. The sediment samples were collected with a manual PVC sampler sliced every 2 cm or according to their textural characteristics, and dried in an oven at 50 C; the length of the sediment cores ranged from 42 cm to 61 cm. After drying, soil and sediment samples were sieved in a 2 mm mesh and packed in polyethylene bottles for INAA. The elements Na, As and Sb presented the highest values for both soil and sediment samples, implying in continuous, regular and spatial monitoring of the reservoir. One sediment core presented a very high concentration of the element Zn when compared to the values of the Upper Continental Crust, indicating a possible anthropic contribution from the region’s industries and classifying the reservoir as extremely polluted in relation to this element. In the evaluation of the enrichment factor it was concluded that the soil presented very high enrichment for the elements Na, As and Sb and the sediment presented very severe enrichment for the elements Na, As and Zn.

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  • IPEN-DOC 24528

    OLIVEIRA, A. ; DAMATTO, S.R. . Inorganic chemical composition of brazilian tobacco products. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. Abstract... São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 15-15.

    Abstract: Cultivation and consumption of tobacco in Brazil began before Portuguese colonization and in the current scenario Brazil stands out as the second largest producer of the plant. This crop has great agricultural importance for three states in the southern region of the country; Paraná, Santa Catarina and Rio Grande do Sul, responsible for 95% of all production. The chemical composition of the tobacco products varies according to plant variety, region of cultivation and preparation of the products (washes, additives, flavorings, among others). Tobacco products are the second most commonly used drug among Brazilian students. Many papers in the international literature present studies on the chemical and radiological composition of several tobacco products, but few studies are found regarding the same composition of the derivatives produced in Brazil. Various toxic elements such as Al, As, Cd, Co, Cr, Hg, Ni and Pb can be found in the tobacco products. The aim of the present study was to determine the inorganic chemical composition of the main tobacco products consumed in Brazil, using the techniques of Instrumental Neutron Activation Analysis - INAA technique to determine the elements: As, Ba, Br, Ca, Ce, Co, Cr, Cs, Fe, Hf, La, Na, Rb, Sc, Sm, Th and Zn and the X-Ray Fluorescence technique for determining the elements: Al, Cd, Cl, Cu, Hg, I, K, Mg, Mn, Ni, P, Pb, S, Sb, Se, Sr and U in 82 samples of tobacco derivatives: 20 unflavoured cigarettes, 9 flavored cigarettes, 14 straw cigarettes, 6 cigars and 33 rope fumes.

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  • IPEN-DOC 10032

    FAVARO, D.I.T. ; OLIVEIRA, S.M.B.; DAMATTO, S.R. ; MENOR, E.A.; MORAES, A.S.; MAZZILLI, B.P. . Major and trace elements in sediments from Viracao Logoon, Fernando de Noronha Archipelogo, Brazil. In: INTERNATIONAL SYMPOSIUM ENVIRONMENTAL GEOCHEMISTRY IN TROPICAL COUNTRIES, 4th, 25-29 Oct., 2004, 2004, Buzios, RJ. Abstract... 2004. p. 388-390.

    Palavras-Chave: brazil; islands; lakes; sediments; trace amounts; elements; multi-element analysis; sample preparation; gamma spectroscopy; ge semiconductor detectors

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  • IPEN-DOC 24529

    SILVA, A.R. ; DAMATTO, S.R. ; LEONARDO, L.; SOUZA, J.M. de ; GONÇALVES, P.N. ; MADUAR, M.F. . Major, minor and trace elements determination using INAA in soil profile and sediment core samples collected in the catchment area of ponte nova reservoir, São Paulo – Brazil. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. Abstract... São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 16-16.

    Abstract: Elemental Chemical Characterization is a keystone in understanding environmental phenomena and its effects. Major and trace elements give important data about geological, physical, chemical and biological phenomena undergoing in natural environments. Ponte Nova reservoir (23 34’43.23" S, 45 56’56.76" W) is the first reservoir in a cascade system that was built in the 1970s to control Upper Tietê River basin water flow. Nowadays, this reservoir serves as a source of water for agricultural and industrial enterprises and as drinkable water source, and were a major concern for the population of São Paulo state due to a recent severe drought in the years of 2014 and 2015. In the present work, major and trace elements (As, Ba, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Tb, Yb and Zn) were determined using Instrumental Neutron Activation Analysis (INAA) in the IEA-R1 nuclear reactor using the comparative method. This procedure consists in exposing 200mg of the sample and reference materials sealed in polypropylene bags to a thermal neutron flux of 1 1012 cm􀀀2s􀀀1. Geo-accumulation indexes and enrichment factors were determined and physicochemical parameters (grain size analysis, pH, real and apparent densities, Loss on Ignition, porosity and humidity) were measured. The major and trace element concentrations were compared with the Upper Continental Crust values. Cluster analysis, correlation matrix and principal component analysis were applied in all the results obtained to verify a probable correlation between the major and trace elements determined in the soil and sediment samples.

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  • IPEN-DOC 15731

    MAZZILLI, B.P. ; LEONARDO, L. ; DAMATTO, S.R. . Monitoring anthropogenic airbone natural radionuclides in the vicinty of TENORM industry using lichen as bio-indicator. In: INTERNATIONAL SYMPOSIUM ON NATURALLY OCCURRING RADIOACTIVE MATERIAL, 6th, March 22-26 , 2010, Marrakech, Morocco. Abstract... 2010.

    Palavras-Chave: lichens; biological indicators; natural radioactivity; industrial plants; air pollution monitoring; uranium 238; radon 226; lead 210; polonium 210; thorium 232; radon 228; alpha spectroscopy; neutron activation analysis

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  • IPEN-DOC 24620

    SILVA, P.S.C. ; SEMMLER, R. ; ZAHN, G. ; ROCHA, F.R. ; DAMATTO, S.R. ; FAVARO, D.I.T. . Natural and artificial nuclides in Salesópolis reservoir by gamma spectometry. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. Abstract... São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 97-97.

    Abstract: Natural radioactivity is ubiquitous in the environment mainly due to the presence of the nuclides from the uranium and thorium series and K-40 in soil, water and sediments. Although in the South Hemisphere nuclear tests have been fewer in number than that in the North, artificial radionuclides can also be found spread at ground level. Salesópolis is located in the Metropolitan Region of São Paulo city (SPMR). The Usina Parque Rio Tietê (Salesópolis) reservoir belong to the Alto do Tietê system for the capture, storage and treatment of water for the São Paulo Metropolitan Region (SPMR). Therefore, the quality of the water, as well as, of sediments of this dam is of great importance. In this study, the activity concentrations of the natural uranium and thorium nuclides series, K-40 and the artificial Cs-137 were determined in a sediment core (T1B) with 42cm depth and sliced each 3 cm totalizing 14 samples, collected in the middle of the Salesópolis dam. Samples were sealed and wait 30 days for the radioactive equilibrium to be reached. The activity concentrations were measured by gamma spectrometry. Samples were counted and saved at regular intervals at a maximum of 160 000 seconds. The gross area were calculated for each peak and plotted against time and the counting rate was obtained by the sloop of the curve. The background and reference materials were treated in the same way. Results showed that 228Th varied from 44 to 150 Bq kg􀀀1 ; 228Ra, from 49 to 149 Bq kg􀀀1; 226Ra, from 26 to 88 Bq kg􀀀1; 210Pb, from 93 to 247 Bq kg􀀀1 ; 40K, from 127 to 852 Bq kg􀀀1 and 137Cs varied from 0.2 to 6.7 Bq kg􀀀1

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  • IPEN-DOC 29157

    LEONARDO, L. ; DAMATTO, S.R. ; MADUAR, M.F. . Natural radioactivity in oilseeds commercialized in the city of São Paulo, Brazil. In: LIMA, FERNANDO de A. (Org.); DANTAS, BERNARDO M. (Org.); LEVY, DENISE (Org.) INTERNATIONAL JOINT CONFERENCE RADIO, 6th; CONGRESSO INTERNACIONAL DE RADIOPROTEÇÃO INDUSTRIAL, 9th; CONGRESSO DE PROTEÇÃO CONTRA AS RADIAÇÕES DOS PAÍSES DE LÍNGUA PORTUGUESA, 8th; CONGRESSO BRASILEIRO DE PROTEÇÃO RADIOLÓGICA, 7th; ENCONTRO NACIONAL DE MULHERES DO SETOR NUCLEAR, 1st, August 15-19, 2022, Poços de Caldas, MG. Abstract... 2022. p. 25-26.

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  • IPEN-DOC 17691

    LEONARDO, L. ; MAZZILLI, B.P. ; DAMATTO, S.R. . On the environmental impact of phosphate fertilizer industry inferred by lichens. In: INTERNATIONAL CONFERENCE ON RADIOECOLOGY AND ENVIRONMENTAL RADIOACTIVITY, June 19-24, 2011, Hamilton, Canada. Abstract... 2011.

    Palavras-Chave: industry; fertilizers; phosphate rocks; gypsum; lichens; natural radioactivity; environmental impacts; neutron activation analysis

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  • IPEN-DOC 21725

    DAMATTO, S.R. ; LEONARDO, L. ; MADUAR, M.F. ; SILVA, A.R.; SOUZA, J.M. ; MAZZILLI, B.P. . Preliminary results fo sup(238)U, sup(232)Th and trace elements determined in soil and sediment profiles collected in Ponte Nova Reservoir, São Paulo, Brazil. In: INTERNATIONAL CONFERENCE ON ENVIRONMENTAL RADIOACTIVITY, September 21-25, 2015, Thessalonik, Grecia. Abstract... 2015.

    Palavras-Chave: elements; water reservoirs; brazil; uranium 238; thorium 232; soils; sediments; neutron activation analysis; radioisotopes; trace amounts

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  • IPEN-DOC 23803

    MENEGHINI, A.A. ; DAMATTO, S.R. ; OLIVEIRA, J. ; CARMO, A.P. . Preliminary results of seasonal variation of 226Ra, 228Ra and 210Pb concentrations in mineral waters from Caxambu, Brazil. In: NATURALLY OCCURRING RADIOACTIVE MATERIAL, 8th, October 18-21, 2016, Rio de Janeiro, RJ. Resumo expandido... 2016.

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  • IPEN-DOC 13508

    SUSSA, F.V. ; SILVA, P.S.C. ; DAMATTO, S.R. ; FAVARO, D.I.T. ; MAZZILLI, B.P. . Radioactive and stable elements concentrations in medicinal plants from Brazil. In: INTERNATIONAL CONFERENCE ON NUCLEAR ANALYTICAL METHODS IN THE LIFE SCIENCES, 9th, September 7-12, 2008, Lisbon, Portugal. Abstract... 2008. p. A122.

    Palavras-Chave: brazil; lead 210; medicinal plants; radioactive materials; radionuclide migration; radium 226; radium 228; stable isotopes; thorium 232; uranium 238

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  • IPEN-DOC 25936

    SILVA, A.R. ; DAMATTO, S.R. ; LEONARDO, L. ; GONÇALVES, P.N. ; SOUZA, J.M. ; MADUAR, M.F. . Radionuclides of natural origin in environmental samples collected in the catchment area of Ponte Nova reservoir, São Paulo, Brazil. In: INTERNATIONAL SYMPOSIUM ON NATURALLY OCCURRING RADIOACTIVE MATERIAL, 8th, October 18-21, 2016, Rio de Janeiro, RJ. Proceedings... Vienna, Austria: IAEA, 2018. p. 179-185. (Proceedings Series IAEA).

    Abstract: Natural radiation is generally classified as terrestrial primordial radiation or cosmogenic radiation. Primordial radiation is mostly due to the decay series of 238U and 232Th and is present in soil, sediments and water; another important source of natural radiation is 40K. Reservoirs are a very dynamic system with several phenomena to study, due to their huge impact on ecosystems and river flow. Ponte Nova reservoir (23°34'43.23"S, 45°56'56.76"W) is the first reservoir in a cascade system that was built in the 1970s to control the Upper Tietê River basin water flow. In the present work, the activity concentrations of 238U, 226Ra, 210Pb, 232Th, 228Th, 228Ra and 40K were determined using instrumental neutron activation analysis and gamma spectrometry in soil profiles collected in the catchment area of Ponte Nova Reservoir and sediment cores collected close to the soil samples. The highest concentration obtained in the soil samples was for 40K that varied from 49 to 2410 Bq/kg and 210Pb in the sediment samples, which varied from 20 to 774 Bq/kg. Cluster analysis and principal component analysis were applied to all the results obtained to verify a probable correlation between the radionuclides determined in the soil and sediment samples.

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✔ Na página do pesquisador, é possível verificar, as variações do nome, a relação de todos os trabalhos com texto completo bem como um quadro resumo numérico; há links para o Currículo Lattes e o Google Acadêmico ( quando esse for informado).

ATENÇÃO!

ESTE TEXTO "AJUDA" ESTÁ SUJEITO A ATUALIZAÇÕES CONSTANTES, A MEDIDA QUE NOVAS FUNCIONALIDADES E RECURSOS DE BUSCA FOREM SENDO DESENVOLVIDOS PELAS EQUIPES DA BIBLIOTECA E DA INFORMÁTICA.

O gerenciamento do Repositório está a cargo da Biblioteca do IPEN. Constam neste RI, até o presente momento 20.950 itens que tanto podem ser artigos de periódicos ou de eventos nacionais e internacionais, dissertações e teses, livros, capítulo de livros e relatórios técnicos. Para participar do RI-IPEN é necessário que pelo menos um dos autores tenha vínculo acadêmico ou funcional com o Instituto. Nesta primeira etapa de funcionamento do RI, a coleta das publicações é realizada periodicamente pela equipe da Biblioteca do IPEN, extraindo os dados das bases internacionais tais como a Web of Science, Scopus, INIS, SciElo além de verificar o Currículo Lattes. O RI-IPEN apresenta também um aspecto inovador no seu funcionamento. Por meio de metadados específicos ele está vinculado ao sistema de gerenciamento das atividades do Plano Diretor anual do IPEN (SIGEPI). Com o objetivo de fornecer dados numéricos para a elaboração dos indicadores da Produção Cientifica Institucional, disponibiliza uma tabela estatística registrando em tempo real a inserção de novos itens. Foi criado um metadado que contém um número único para cada integrante da comunidade científica do IPEN. Esse metadado se transformou em um filtro que ao ser acionado apresenta todos os trabalhos de um determinado autor independente das variáveis na forma de citação do seu nome.

A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.

1. Portaria IPEN-CNEN/SP nº 387, que estabeleceu os princípios que nortearam a criação do RDI, clique aqui.


2. A experiência do Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP) na criação de um Repositório Digital Institucional – RDI, clique aqui.

O Repositório Digital do IPEN é um equipamento institucional de acesso aberto, criado com o objetivo de reunir, preservar, disponibilizar e conferir maior visibilidade à Produção Científica publicada pelo Instituto, desde sua criação em 1956.

Operando, inicialmente como uma base de dados referencial o Repositório foi disponibilizado na atual plataforma, em junho de 2015. No Repositório está disponível o acesso ao conteúdo digital de artigos de periódicos, eventos, nacionais e internacionais, livros, capítulos, dissertações, teses e relatórios técnicos.

A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.

O gerenciamento do Repositório está a cargo da Biblioteca do IPEN. Constam neste RI, até o presente momento 20.950 itens que tanto podem ser artigos de periódicos ou de eventos nacionais e internacionais, dissertações e teses, livros, capítulo de livros e relatórios técnicos. Para participar do RI-IPEN é necessário que pelo menos um dos autores tenha vínculo acadêmico ou funcional com o Instituto. Nesta primeira etapa de funcionamento do RI, a coleta das publicações é realizada periodicamente pela equipe da Biblioteca do IPEN, extraindo os dados das bases internacionais tais como a Web of Science, Scopus, INIS, SciElo além de verificar o Currículo Lattes. O RI-IPEN apresenta também um aspecto inovador no seu funcionamento. Por meio de metadados específicos ele está vinculado ao sistema de gerenciamento das atividades do Plano Diretor anual do IPEN (SIGEPI). Com o objetivo de fornecer dados numéricos para a elaboração dos indicadores da Produção Cientifica Institucional, disponibiliza uma tabela estatística registrando em tempo real a inserção de novos itens. Foi criado um metadado que contém um número único para cada integrante da comunidade científica do IPEN. Esse metadado se transformou em um filtro que ao ser acionado apresenta todos os trabalhos de um determinado autor independente das variáveis na forma de citação do seu nome.