Navegação Eventos - Artigos por Autores IPEN "ZEITUNI, CARLOS A."

Classificar por: Ordenar: Resultados:

  • IPEN-DOC 15006

    MOURA, EDUARDO S.; ZEITUNI, CARLOS A. ; MANZOLI, JOSE E. ; MOURA, JOAO A. ; FEHER, ANSELMO ; SOUZA, CARLA D.; ROSTELATO, MARIA E.C.M. . About TLD-100 glow curve manipulation to achieve dosimetric parameters of I-125 seeds used for brachytherapy. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st, September 27 - October 2, 2009, Rio de Janeiro, RJ. Proceedings... Sao Paulo: ABEN, 2009, 2009.

    Palavras-Chave: brachytherapy; dosimetry; glow curve; iodine 125; lithium fluorides; neoplasms; phantoms; prostate; radiation source implants; thermoluminescent dosemeters

  • IPEN-DOC 26231

    BEZERRA, ANDRE de S. ; ZEITUNI, CARLOS A. ; ROSTELATO, MARIA E.C.M. . Analysis of the use of brachytherapy treatment in prostate cancer patients attended in general public hospital of Palmas in 2015. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 1767-1772.

    Abstract: Approximately 68.000 prostate cancer cases are estimated per year in Brazil, but many of these will present a bad prognosis due to the difficulties of access by users of public health services and the precariousness of many of these. This scenario is determinant for the occurrence of many cases of advanced disease, late diagnosis, worse clinical condition and higher risk of death. The state of Tocantins has a humble health structure that unfortunately does not yet have brachytherapy treatment for this condition and offers few beds for surgical treatment, while radiotherapy, performed in only one city in the state, coexists with constant problems and interruptions of care. The objective of this study is to analyze the population of patients with prostate cancer treated at the General Public Hospital of Palmas, the main state reference, in the year 2015, and specifically to determine how many of the patients could have been treated through brachytherapy. After approval by the Ethics and Research Committee, data collection, analysis, organization and treatment were carried out using BioEstat® statistical software, aiming at consolidating information, producing results and obtaining answers to the objectives of this study. The study demonstrated that the majority of these patients came from other localities, with advanced clinical staging, adenocarcinoma histological type, but with 19% of cases presenting criteria for treatment by brachytherapy, which would lead to a significant decrease in the demand for beds and referrals to other centers.

    Palavras-Chave: brachytherapy; brazil; health services; neoplasms; patients; prostate; statistical data; therapeutic uses

  • IPEN-DOC 26133

    ABREU, RODRIGO T. ; ANGELOCCI, LUCAS V. ; NOGUEIRA, BEATRIZ R. ; SANTOS, HAMONA N. dos ; ZEITUNI, CARLOS A. ; ROSTELATO, MARIA E.C.M. . Anisotropy function of a new 192-Ir brachytherapy source. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 175-185.

    Abstract: Brachytherapy is a type of radiotherapy that uses radioactive sources (seeds, wires, among others) close to the tumor. Is important to provide a detailed description of seed dosimetry, so only the tumor will be irradiated avoiding unnecessary dose on adjacent organs and structures. To evaluate the dosimetric parameter of the anisotropy function for a new brachytherapy source, this work proposes the use of microcube TLD-100 dosimeters to find the dose rate using the AAPM Task Group 43 protocol (TG-43). The anisotropy function represents dose distribution around the source and has a major role for characterization of a new iridium source being implemented in Brazil. The value of D(r,θ) was measured using Solid Water phantoms, r value being the distance from the geometric center of the source to the position of the dosimeter on the phantom, and θ being the angle formed between the longitudinal axis of the source and the line connecting the geometric center to the TLD. Monte Carlo calculations were performed to evaluate the anisotropy function to validate the experimental measurements. For each distance value (r), an anisotropy function was plotted (1.0, 2.0, 3.0, 4.0, 5.0, and 10.0 cm). The results obtained with Monte Carlo calculations agreed ±2% with the experimental values for r greater than 3.0 cm, so these results show a good distribution of dose around the seed considering the high energy of 192-Ir (average of 380 KeV) and encapsulation thickness.

    Palavras-Chave: anisotropy; brachytherapy; dose rates; dosimetry; iridium 192; monte carlo method; phantoms; radiation dose distributions; radiation source implants; sealed sources; thermoluminescent dosemeters

  • IPEN-DOC 21100

    SOUZA, DAIANE C.B. ; ROSTELATO, MARIA E.C. ; VICENTE, ROBERTO ; ZEITUNI, CARLOS A. ; TIEZZI, RODRIGO ; COSTA, OSVALDO L. ; SOUZA, CARLA D. ; PELEIAS JUNIOR, FERNANDO S. ; RODRIGUES, BRUNA T. ; SOUZA, ANDERSON S. ; KARAM JUNIOR, DIB; BATISTA, TALITA Q.; MELO, EMERSON R.; CAMARGO, ANDERSON R. . Assessment of the risks associated with iodine-125 handling production sources for brachytherapy. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 12th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 19th; MEETING ON NUCLEAR INDUSTRY, 4th, October 4-9, 2015, São Paulo, SP. Proceedings... 2015.

    Palavras-Chave: hydrogels; pvp; nanoparticles; cellulose; silver; polymers; swelling; scanning electron microscopy; toxicity

  • IPEN-DOC 14094

    SOUZA, CARLA D.; ZEITUNI, CARLOS A. ; MOURA, JOAO A. ; MOURA, EDUARDO S.; NAGATOMI, HELIO R.; FEHER, ANSELMO ; HILARIO, KATIA F. ; ROSTELATO, MARIA E.C.M. . Brachytherapy with 125-iodine sources: transport and radiation protection. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st, September 27 - October 2, 2009, Rio de Janeiro, RJ. Proceedings... Sao Paulo: ABEN, 2009, 2009.

    Palavras-Chave: brachytherapy; dosemeters; internal irradiation; iodine 125; irradiation capsules; neoplasms; radiation protection; radiation source implants; safety standards; transport regulations; transport

  • IPEN-DOC 24133

    COSTA, OSVALDO L. da ; SOUZA, DAIANE C.B. de ; FEHER, ANSELMO ; MOURA, JOAO A. ; SOUZA, CARLA D. ; OLIVEIRA, HENRIQUE B. de ; PELEIAS JUNIOR, FERNANDO S. ; ZEITUNI, CARLOS A. ; ROSTELATO, MARIA E.C.M. . Brazilian demand for iodine-125 seeds in cancer treatment after a decade of medical procedures. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 22-27, 2017, Belo Horizonte, MG. Proceedings... Rio de Janeiro, RJ: Associação Brasileira de Energia Nuclear, 2017.

    Palavras-Chave: brachytherapy; brain; demand; iodine 125; ophthalmology; sealed sources; statistical data

  • IPEN-DOC 26303

    LUCCA, LUIZA V.G. de ; RODRIGUES, BRUNA T. ; SOUZA, PAULO R.D. de ; MACHADO, LUCAS K. ; ZEITUNI, CARLOS A. ; ROSTELATO, MARIA E.C.M. . Calibration methodology and selection of TLD – 100. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 2797-2801.

    Abstract: In Brazil, it is estimated that for the biennium 2018 2019, that occurred 600 thousand of new cases of cancer for each year and lung cancer is the most common of all malignant tumors. Radiotherapy acts as a form of treatment from which come two basic modalities for the treatment of cancer: teletherapy and brachytherapy. In teletherapy is used a linear accelerator to make the application and before starting the treatment is carried out a planning that makes the acquisition of all anatomical information of the patient and then the classification of areas of interest in the patient. All planning prior to initiation undergoes a quality control dosimetry, which ensures that the dose prescribed in the planning will be delivered accurately in the treatment of the patient. In radiotherapy the dosimetry is applied as an independent measurement and this work has the objective of comparing the dosimetric plan of lung cancer in adjacent organs in this case the organ of risk is the heart with dose values calculated in the planning system (TPS) using an anthropomorphic phanton. All dosimetry was performed with thermo luminescent dosimeters (Lif: Mg,Ti TLD 100). We selected 50 TLDs that underwent a calibration process with thermal treatment, irradiation and reading. All the dosimeters passed through the reader in order to quantify its reading. The TLDs chosen were those that obtained coefficients of variation of less than 5% for three cycles of irradiation, in order to prove the methodology used for the thermal treatment, reading and calibration of dosimeters.

    Palavras-Chave: calibration; cobalt 70; comparative evaluations; dosimetry; heat treatments; phantoms; planning; radiotherapy; thermoluminescent dosemeters

  • IPEN-DOC 24173

    GONZALEZ, ANDREZA A.D.C.C. ; ROSTELATO, MARIA E.C.M. ; SOUZA, CARLA D. ; RODRIGUES, BRUNA T. ; SOUZA, DAIANE C.B. ; ZEITUNI, CARLOS A. ; NOGUEIRA, BEATRIZ R. . Coatings of nanoparticles applied to brachytherapy treatments. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 22-27, 2017, Belo Horizonte, MG. Proceedings... Rio de Janeiro, RJ: Associação Brasileira de Energia Nuclear, 2017.

    Palavras-Chave: brachytherapy; coatings; gold; gum acacia; light scattering; nanoparticles; polyethylene glycols; radiation source implants; synthesis; transmission electron microscopy

  • IPEN-DOC 19396

    PELEIAS JUNIOR, FERNANDO S.; ZEITUNI, CARLOS A. ; ROSTELATO, MARIA E.C.M. ; SOUZA, CARLA D.; MATTOS, FABIO R.; BENEGA, MARCOS A.G.; MOURA, JOAO A.; MOURA, EDUARDO S.; FEHER, ANSELMO ; COSTA, OSVALDO L. ; OLIVEIRA, TIAGO B.; KARAN JUNIOR, DIB. Comparison between methods for fixing radioactive iodine in silver substrate for manufacturing brachytherapy sources. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 11th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 18th; MEETING ON NUCLEAR INDUSTRY, 3rd, November 24-29, 2013, Recife, PE. Proceedings... Sao Paulo: ABEN, 2013, 2013.

    Palavras-Chave: brachytherapy; chemical reactions; comparative evaluations; efficiency; electrodeposition; iodine 125; iodine 131; neoplasms; patents; prostate; silver; substrates

  • IPEN-DOC 21156

    SOUZA, ANDERSON S. ; ROSTELATO, MARIA E.C.M. ; ZEITUNI, CARLOS A. ; MOURA, EDUARDO S. ; RODRIGUES, BRUNA T. ; SOUZA, DAIANE C. ; TIEZZI, RODRIGO ; SOUZA, CARLA D. ; MELO, EMERSON R.; CARMARGO, ANDERSON R.; BATISTA, TALITA Q.. Comparison of the dosimetric parameters in linear accelerators with flattening filter-free (FFF) and flattening filter (FF). In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 12th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 19th; MEETING ON NUCLEAR INDUSTRY, 4th, October 4-9, 2015, São Paulo, SP. Proceedings... 2015.

    Palavras-Chave: comparative evaluations; linear accelerators; dosimetry; radiotherapy

  • IPEN-DOC 17032

    FEHER, ANSELMO ; CALVO, WILSON A.P. ; ROSTELATO, MARIA E.C.M. ; ZEITUNI, CARLOS A. ; SOMESSARI, SAMIR L. ; COSTA, OSVALDO L. ; MOURA, JOAO A.; MOURA, EDUARDO S.; SOUZA, CARLA D.; RELA, PAULO R. . Development of an encapsulation method using plasma arc welding to produce iodine-125 seeds for brachytherapy. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 10th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 17th; MEETING ON NUCLEAR INDUSTRY, 2nd, October 24-28, 2011, Belo Horizonte, MG. Proceedings... Sao Paulo: ABEN, 2011, 2011.

    Palavras-Chave: brachytherapy; containment; iodine; iodine 125; plasma arc welding; prostate; radiation source implants; radiopharmaceuticals; sealed sources

  • IPEN-DOC 19382

    MATTOS, FABIO R.; ROSTELATO, MARIA E.C.M. ; ZEITUNI, CARLOS A. ; SOUZA, CARLA D.; MOURA, JOAO A. ; PELEIAS JUNIOR, FERNANDO S.; KARAN JUNIOR, DIB; FEHER, ANSELMO ; OLIVEIRA, TIAGO B.; BENEGA, MARCOS A.G.. Development of irradiation support devices for production of brachytherapy seeds. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 11th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 18th; MEETING ON NUCLEAR INDUSTRY, 3rd, November 24-29, 2013, Recife, PE. Proceedings... Sao Paulo: ABEN, 2013, 2013.

    Palavras-Chave: eyes; neoplasms; brachytherapy; internal irradiation; radiation source implants; iridium 192; neutron activation analysis; iear-1 reactor

  • IPEN-DOC 16952

    MOSCA, RODRIGO C.; MOURA, EDUARDO S.; ZEITUNI, CARLOS A. ; MATHOR, MONICA B. . Development of irradiator sup(60)Co sources. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 10th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 17th; MEETING ON NUCLEAR INDUSTRY, 2nd, October 24-28, 2011, Belo Horizonte, MG. Proceedings... Sao Paulo: ABEN, 2011, 2011.

    Palavras-Chave: cobalt; cobalt 60; external irradiation; irradiation; irradiation devices; radiation sources

  • IPEN-DOC 21049

    TIEZZI, RODRIGO ; ROSTELATO, MARIA E.C.M. ; NAGATOMI, HELIO R. ; ZEITUNI, CARLOS A. ; BENEGA, MARCOS A. ; SOUZA, DAIANE B. de; COSTA, OSVALDO L. da ; SOUZA, CARLA D. ; RODRIGUES, BRUNA T. ; SOUZA, ANDERSON S. de ; PELEIAS JUNIOR, FERNANDO S. ; SANTOS, RAFAEL M. dos; MELO, EMERSON R. de; KARAN JUNIOR, DIB. Development of sealed radioactive sources immobilized in epoxy resin for verification of detectors used in nuclear medicine. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 12th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 19th; MEETING ON NUCLEAR INDUSTRY, 4th, October 4-9, 2015, São Paulo, SP. Proceedings... 2015.

    Palavras-Chave: sealed sources; epoxides; resins; radiation detectors; nuclear medicine; amines

  • IPEN-DOC 26132

    PRIMO, CAMILA de O. ; ANGELOCCI, LUCAS V. ; KARAM JUNIOR, DIB; ZEITUNI, CARLOS A. ; ROSTELATO, MARIA E.C.M. . Dose-rate constant and air-kerma strength evaluation of a new 125-I brachytherapy source using Monte-Carlo. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 167-174.

    Abstract: Brachytherapy is a modality of radiotherapy which treats tumors using ionizing radiation with sources located close to the tumor. The sources can be produced from several radionuclides in various formats, such as Iodine-125 seeds and Iridium-192 wires. In order to produce a new Iodine-125 seed in IPEN/CNEN and ensure its quality, it is essential to describe the dosimetry of the seed, so when applied in a treatment the lowest possible dose to neighboring healthy tissues can be reached. The report by the AAPM’s Task Group 43 U1 is a document that indicates the dosimetry procedures in brachytherapy based on physical and geometrical parameters. In this study, dose-rate constant and air-kerma strength parameters were simulated using the Monte Carlo method radiation transport code MCNP4C. The air-kerma strength is obtained from an ideal modeled seed, since its actual value should be measured for seeds individually in a specialized lab with a Wide-Angle Free-Air Chamber (WAFAC). Dose-rate constant and air-kerma strength are parameters that depends on intrinsic characteristics of the source, i.e. geometry, radionuclide, encapsulation, and together they define the dose-rate to the reference point, defined as the dose-rate to a point 1 cm away from the geometric center of the source, in its transverse plane. This study presents the values found for these parameters with associated statistical uncertainty, and is part of a larger project that aims the full dosimetry of this new seed model, including experimental measures.

    Palavras-Chave: brachytherapy; computerized simulation; dose rates; dosimetry; iodine 125; kerma; monte carlo method

  • IPEN-DOC 26136

    ANGELOCCI, LUCAS V. ; NOGUEIRA, BEATRIZ R. ; ABREU, RODRIGO T. ; ZEITUNI, CARLOS A. ; ROSTELATO, MARIA E.C.M. . End-weld thickness variation effects on dose rate for a new ir-192 brachytherapy source. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 198-206.

    Abstract: Brachytherapy is a form of radiation therapy that uses small sealed sources close to the tumor to deliver a high dose to target while keeping dose on neighboring healthy tissues as low as possible. A wide variety of radionuclides and different sources are available for brachytherapy, each with his own unique geometry. The Laboratory of Sources Production for Radiotherapy (IPEN/CNEN) developed a new Ir-192 seed for eye tumor treatment that is currently under dosimetric definition. This work is part of a larger project that aims the full dosimetry of this new source, but rather than calculate the usual parameters proposed by the American Association of Physicists in Medicine, the specific contribution to the dose rate of a usually not considered factor was investigated under a statistical approach: end-weld thickness variation, which is important due to this source being welded by an in-house method. Its effects were investigated using the Monte Carlo radiation transport code MCNP4C and an in-house routine programmed with MATLAB® to analyze the data. Final results are presented as a mean value for dose rate at different points of interest and their associated standard deviations. The results are discussed based on the influence of said parameter on different points around the source.

    Palavras-Chave: brachytherapy; dose rates; dosimetry; eyes; iridium 192; monte carlo method; radiation source implants; sealed sources; thickness; welding

  • IPEN-DOC 20428

    RODRIGUES, BRUNA T. ; SOUZA, CARLA D. ; BENEGA, MARCOS A.G. ; SOUZA, ANDERSON S.; ROSTELATO, MARIA E.C.M. ; ZEITUNI, CARLOS A. ; TIEZZI, RODRIGO ; PELEIAS, FERNANDO S.; SOUZA, DAIANE C. ; SILVA, THAIS H. . Estudo e desenvolvimento de metodologia para fixação de iodo radioativo em substrato polimérico para confecção de fontes utilizadas em braquiterapia. In: CONGRESSO DE PROTEÇÃO CONTRA RADIAÇÕES DA COMUNIDADE DE PAISES DE LÍNGUA PORTUGUESA, 4.; CONGRESSO INTERNACIONAL DE RADIOPROTEÇÃO INDUSTRIAL, 6.; ENCONTRO DE PROTEÇÃO RADIOLÓGICA DO CONE SUL, 1.; CONGRESSO BRASILEIRO DE PROTEÇÃO RADIOLÓGICA, 4., August 26-29, 2014, Gramado, RS. Anais... 2014.

    Palavras-Chave: brachytherapy; iodine 125; neoplasms; prostate; radiation source implants; sealed sources; epoxides

  • IPEN-DOC 26234

    CARLECH, HIGOR S. ; LISBOA, ANA C.V.C.; VITAL, MARCILIO L.; ZEITUNI, CARLOS A. ; ROSTELATO, MARIA E.C.M. . Evaluation of acute toxicity in the treatment of prostate cancer with conformational radiotherapy: choort with 45 patients. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 1797-1809.

    Abstract: BACKGROUND: Radiatiotherapy is often associated with a wide range of significant side effects. These side effects are commonly classified as acute or delayed according to when they manifest in relation to treatment. METHODS: This study aimed to evaluate acute toxicity in patients with prostate cancer treated with conformational radiotherapy (3D) in an Oncology Unit in Eastern Minas Gerais. A prospective, observational, cohort study was performed through a non-probabilistic sampling of convenience, totalazing 45 patients. Patients included in the study were followed from the start of treatment to 3 months after external beam radiation therapy (EBRT). RESULTS: Demographic Characteristics - Of the 45 patients included, mean age was 70.6 ± 8.3 (SD) years, and predominantly white (44.0 %). The majority were married (75.6 %). Considering the risk classification, there was a homogeneous distribution between the low (33.3 %), intermediate (31.1 %) and high (35.6 %) levels. The majority of the patients (57.8 %) had a low risk (T1) classification, followed by intermediate risk classification (33.3%) and high risk (8.9 %). In the Gleason score, 44.4 % presented values below 6 (low), 40.0 % intermediate, and 15.5 % high. 62.2 % had a PSA level less than 10 ng.mL-1, 22.2 % had an intermediate level, from 10 to 20 ng.mL-1 and 15.6%, above 20 ng.mL-1. Manifestation of acute toxicity - It was observed that the majority (59.1 %) of the acute effects manifested during the first consultation, prevailing the symptom of urinary frequency (64.1 %). Regarding the symptoms of acute effects most prevalent during the three consultations, we highlight the urinary frequency with 44.0 %, followed by the urinary residue (20.0 %). CONCLUSION: 80.0 % of the patients presented acute effects during radiotherapy, being the urinary frequency the event more frequent (44.0 %), followed by urinary residue (20.0 %). Eighteen patients (40.0 %) presented only one acute effect and 59.1 % of the effects were observed at the first visit.

    Palavras-Chave: external beam radiation therapy; neoplasms; patients; prostate; radiotherapy; side effects; toxicity; urinary tract

  • IPEN-DOC 21123

    COSTA, OSVALDO L. da ; TIEZZI, RODRIGO ; SOUZA, DAIANE C.B.; FEHER, ANSELMO ; MOURA, JOAO A. ; SOUZA, CARLA D. ; MOURA, EDUARDO S. ; OLIVEIRA, HENRIQUE B. ; ZEITUNI, CARLOS A. ; ROSTELATO, MARIA E.C.M. . Evaluation of aluminium capsules according to ISO 9978 to irradiation of gaseous samples in nuclear reactor. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 12th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 19th; MEETING ON NUCLEAR INDUSTRY, 4th, October 4-9, 2015, São Paulo, SP. Proceedings... 2015.

    Palavras-Chave: aluminium; capsules; iso; standardization; irradiation; mass spectroscopy; gases; helium; fabrication; leak testing; sealed sources

  • IPEN-DOC 26206

    COSTA, OSVALDO L. da ; SOUZA, DAIANE C.B. de ; CASTANHO, FABIO G. ; FEHER, ANSELMO ; MOURA, JOÃO A. ; SOUZA, CARLA D. de ; OLIVEIRA, HENRIQUE B. de ; MADUAR, MARCELO F. ; ZEITUNI, CARLOS A. ; ROSTELATO, MARIA E.C.M. . Gamma spectrometry of iodine-125 produced in IEA-R1 nuclear reator, using HPGe detector and fixation into epoxy matrix disc. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 1176-1183.

    Abstract: Few places in the world produce iodine-125. In Brazil, the first production happened in nuclear reactor IEA-R1 located at Nuclear and Energy Research Institute – IPEN. To verify the quality of iodine-125 produced, because contaminants as iodine-126, caesium-134 and caesium-137 among others, may be produced in irradiation process, iodine-125 samples were immobilized into epoxy matrix disc, with the same geometry of a barium-133 reference radioactive source, used to calibrate an HPGe detector. The HPGe detector has a thin carbon composite window, which allows measure the iodine-125 photopeaks, between 27.1 and 35.4 keV.

    Palavras-Chave: contamination; gamma spectroscopy; high-purity ge detectors; iodine 125; irradiation; quality control; volatility; brazilian cnen

A pesquisa no RD utiliza os recursos de busca da maioria das bases de dados. No entanto algumas dicas podem auxiliar para obter um resultado mais pertinente.

É possível efetuar a busca de um autor ou um termo em todo o RD, por meio do Buscar no Repositório , isto é, o termo solicitado será localizado em qualquer campo do RD. No entanto esse tipo de pesquisa não é recomendada a não ser que se deseje um resultado amplo e generalizado.

A pesquisa apresentará melhor resultado selecionando um dos filtros disponíveis em Navegar

Os filtros disponíveis em Navegar tais como: Coleções, Ano de publicação, Títulos, Assuntos, Autores, Revista, Tipo de publicação são autoexplicativos. O filtro, Autores IPEN apresenta uma relação com os autores vinculados ao IPEN; o ID Autor IPEN diz respeito ao número único de identificação de cada autor constante no RD e sob o qual estão agrupados todos os seus trabalhos independente das variáveis do seu nome; Tipo de acesso diz respeito à acessibilidade do documento, isto é , sujeito as leis de direitos autorais, ID RT apresenta a relação dos relatórios técnicos, restritos para consulta das comunidades indicadas.

A opção Busca avançada utiliza os conectores da lógica boleana, é o melhor recurso para combinar chaves de busca e obter documentos relevantes à sua pesquisa, utilize os filtros apresentados na caixa de seleção para refinar o resultado de busca. Pode-se adicionar vários filtros a uma mesma busca.

Exemplo:

Buscar os artigos apresentados em um evento internacional de 2015, sobre loss of coolant, do autor Maprelian.

Autor: Maprelian

Título: loss of coolant

Tipo de publicação: Texto completo de evento

Ano de publicação: 2015

Para indexação dos documentos é utilizado o Thesaurus do INIS, especializado na área nuclear e utilizado em todos os países membros da International Atomic Energy Agency – IAEA , por esse motivo, utilize os termos de busca de assunto em inglês; isto não exclui a busca livre por palavras, apenas o resultado pode não ser tão relevante ou pertinente.

95% do RD apresenta o texto completo do documento com livre acesso, para aqueles que apresentam o significa que e o documento está sujeito as leis de direitos autorais, solicita-se nesses casos contatar a Biblioteca do IPEN, bibl@ipen.br .

Ao efetuar a busca por um autor o RD apresentará uma relação de todos os trabalhos depositados no RD. No lado direito da tela são apresentados os coautores com o número de trabalhos produzidos em conjunto bem como os assuntos abordados e os respectivos anos de publicação agrupados.

O RD disponibiliza um quadro estatístico de produtividade, onde é possível visualizar o número dos trabalhos agrupados por tipo de coleção, a medida que estão sendo depositados no RD.

Na página inicial nas referências são sinalizados todos os autores IPEN, ao clicar nesse símbolo será aberta uma nova página correspondente à aquele autor – trata-se da página do pesquisador.

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.