Navegação Periódicos - Artigos por ano de publicação "2016"

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  • IPEN-DOC 22667

    DEETER, M.N.; MARTINEZ-ALONSO, S.; GATTI, L.V. ; GLOOR, M.; MILLER, J.B.; DOMINGUES, L.G. ; CORREIA, C.S.C. . Validation and analysis of MOPITT CO observations of the Amazon Basin. Atmospheric Measurement Techniques, v. 9, n. 8, p. 3999-4012, 2016. DOI: 10.5194/amt-9-3999-2016

    Abstract: We analyze satellite retrievals of carbon monoxide from the MOPITT (Measurements of Pollution in the Troposphere) instrument over the Amazon Basin, focusing on the MOPITT Version 6 “multispectral” retrieval product (exploiting both thermal-infrared and near-infrared channels). Validation results based on in situ vertical profiles measured between 2010 and 2013 are presented for four sites in the Amazon Basin. Results indicate a significant negative bias in retrieved lower-tropospheric CO concentrations. The possible influence of smoke aerosol as a source of retrieval bias is investigated using collocated Aerosol Robotic Network (AERONET) aerosol optical depth (AOD) measurements at two sites but does not appear to be significant. Finally, we exploit the MOPITT record to analyze both the mean annual cycle and the interannual variability of CO over the Amazon Basin since 2002.

    Palavras-Chave: validation; carbon monoxide; brazil; satellites; pollution; troposphere; measuring instruments


  • IPEN-DOC 21731

    CARVALHO, JOSE M.; LASTUSAARI, MIKA; RODRIGUES, LUCAS C.V.; HOLSA, JORMA; FELINTO, MARIA C.F.C. ; BRITO, HERMI F.. Valence control of Pr in ZrOsub(2) nanocrystals by aliovalent Gdsup(3+) co-doping. Journal of Luminescence, v. 170, n. 2, p. 627-632, 2016.

    Palavras-Chave: valence; praseodymium; luminescence; nanostructures; crystals; doped materials; zirconium oxides; gadolinium; x-ray diffraction; relaxation


  • IPEN-DOC 22714

    BISCONSIN JUNIOR, ANTONIO; TOPOLNIAK, LUCIANO; DIAS, ALDISON D.F.; MEDINA, MICHELLY C.R.; OLIVEIRA, CLAUDINEI de; NASCIMENTO, NANCI do . Uso da radiação gama na agricultura. Revista de Educação Tecnológica e Científica, v. 1, n. 1, p. 1-18, 2016. Orientador: GAMMA RADIATION.

    Abstract: Enquanto a população mundial cresce, a quantidade de terra disponível para a produção de alimentos continua a mesma, o que torna necessário o uso de tecnologias que sejam capazes de aumentar a produtividade, preservar a qualidade e conservar os alimentos após a colheita. Neste contexto, esta revisão apresenta as diversas aplicações da radiação gama na agricultura, avaliando os benefícios e malefícios do uso desta tecnologia, que tem conferido benefícios, como o crescimento acelerado, melhoramento da produção, resistência às pragas e maior tempo de preservação. Para tanto, a radiação gama pode ser utilizada no solo, nas sementes, durante a produção e no pós-colheita de diversos alimentos de origem vegetal. Na aplicação em sementes, geralmente, a radiação gama apresenta efeitos negativos na germinação e crescimento da planta, contudo esses efeitos são considerados vantajosos para o armazenamento de sementes que serão consumidas. Quanto ao solo, foi possível observar que certas doses de radiação gama afetam apenas grupos específicos de micro-organismos, sendo possível reduzir o uso de agrotóxicos. Os maiores benefícios encontrados dizem respeito ao controle de pragas nas lavouras e na preservação dos vegetais após a colheita. O manejo de insetos-pragas é realizado com a radioentomologia, que consiste em tornar os insetos machos estéreis por irradiação e liberá-los em lavouras infestadas, para acasalarem com as fêmeas sem resultados positivos. No pós-colheita, a irradiação tem sido utilizada para inativar micro-organismos patógenos e deterioradores, desinfestar produtos armazenados, inibir o brotamento de bulbos e tubérculos, bem como para alterar o metabolismo de amadurecimento e senescência dos vegetais.

    Palavras-Chave: agriculture; gamma radiation; ionizing radiations; soils; seeds; yields; harvest process; uses; food; production


  • IPEN-DOC 22385

    LIMA, CASSIO A. ; GOULART, VIVIANE P. ; CORREA, LUCIANA; ZEZELL, DENISE M. . Using fourier transform infrared spectroscopy to evaluate biological effects induced by photodynamic therapy. Lasers in Surgery and Medicine, v. 48, p. 538-545, 2016.

    Palavras-Chave: aminolevulinic acid; carcinomas; fourier transform spectrometers; infrared spectrometers; biological effects; therapy; in vivo; animals; mice; lasers


  • IPEN-DOC 22845

    SILVA, SIRLANE G. da ; SILVA, JULIO C.M. ; BUZZO, GUILHERME S.; NETO, ALMIR O. ; ASSUMPÇAO, MONICA H.M.T.. Use of PtAu/C electrocatalysts toward formate oxidation: electrochemical and fuel cell considerations. Materials for Renewable and Sustainable Energy, v. 5, n. 15, p. 1-8, 2016. DOI: 10.1007/s40243-016-0079-8

    Abstract: This study reports the use of PtAu/C electrocatalysts with different atomic ratios (90:10, 70:30 and 50:50) supported on Vulcan XC 72 carbon and prepared by the sodium borohydride method toward formate electrooxidation in alkaline media. The materials were characterized by X-ray diffraction, showing peaks characteristics of Pt and Au face-centered-cubic structures, and also by transmission electron micrographs that show the nanoparticles well dispersed on carbon and a mean particle size between 4 and 5 nm for all electrocatalysts. Electrochemical experiments show PtAu/C as promising catalysts toward formate oxidation, while single cell experiments reveal PtAu/C 90:10 as the best material since it provides a power density higher than Pt/C. The incorporation of Au could increase formate oxidation for more than one reason: (i) a facilitated rupture of C–H bond; (ii) the Au/oxide interface or (iii) by regenerating active sites.


  • IPEN-DOC 23091

    MUNHOZ JUNIOR, A.H.; MARTINS, J.S.; RIBEIRO, R.R.; MIRANDA, L.F.; ANDRADES, R.C.; BERTACHINI, K.C.; SILVA, L.G.A. . Use of pseudoboehmite nanoparticles for drug delivery system of glucantime (R). Journal of Nano Research, v. 38, p. 47-51, 2016. DOI: 10.4028/

    Abstract: Recently, the incidence of American Cutaneous Leishmaniasis (ACL) has been grown in Latin America, especially in Brazil, where from 1980 to 2005, 605,062 cases were recorded. The drug glucantime (R), whose active principle is the meglumine antimoniate (or meglumine antimonate) is used in the treatment of leishmaniasis. Its toxicity is due mainly to the presence of antimony in its structure. Therefore, it is crucial to determine the safe dose levels of this drug in the treatment. Drug delivery systems have been currently the focus of many studies due to its effectiveness in treating diseases proved to be superior compared to conventional methods. Drug delivery systems can avoid overdosing by decreasing the amount of drug intake, which results in a better therapeutic effect in addition to reducing the risks of plasma concentration reaching toxic levels. Synthetic nanomaterials have been receiving great attention due to their potential applications in pharmaceutical technology as well as the possibility of controlling their particle size and composition, which allows a better performance in drug release. Pseudoboehmite is a synthetic aluminum compound precursor of alumina [1] and a polymorph of boehmite, with active groups in its structure [2], making it an excellent adsorbent material. In this work, pseudoboehmite was prepared by using the sol-gel process for being used as an excipient. The incorporation of pseudoboehmite in glucantime (R) was performed in the processing of tablets. Both pseudoboehmite and the tablets were characterized via X-ray diffraction (XRD), differential thermal analysis (DTA), thermogravimetric analysis (TG), and scanning electron microscopy (SEM) using secondary electron detector and EDS detector. The release profile was obtained by UV/Vis spectroscopy for in vitro simulation. No reaction between the drug and the excipient was observed.


  • IPEN-DOC 23511

    TAKIISHI, HIDETOSHI ; GENOVA, LUIS A. ; CAVALHEIRA, ELTON D. ; COTRIM, MARYCEL B. ; SANTOS, WILSON ; LAINETTI, PAULO E.O. . Use of dopants for thoria sintering temperature reduction-characterization of THO2. Journal of Energy and Power Engineering, v. 10, n. 12, p. 740-745, 2016. DOI: 10.17265/1934-8975/2016.12.004

    Abstract: Thorium is nearly three times more abundant than uranium in the Earth’s crust. Some papers evaluate the thorium resources in Brazil over 1,200,000 metric t. These figures mean that the country is probably the biggest thorium resource in the world, with only part of the territory prospected. Nevertheless, Brazil has not a research program for use of thorium in nuclear reactors, even having dedicated special attention to the subject in the beginning of its nuclear activities, in the fifties and sixties. From 1985 until 2003 IPEN operated a pilot plant for thorium nitrate production and purification, used by Brazilian industry for production of gas mantles. This facility produced over 170 metric t of thorium nitrate. Despite the non-nuclear application, the pilot plant was unique in the southern hemisphere. On the other hand, Brazil has the biggest world niobium resources. The Brazilian thorium and niobium resources added to the predictable future importance of alternative fissile materials have motivated this research, since uranium is a finite resource if used in the present thermal nuclear reactors. Besides this, thorium oxide is an important nuclear reactor material. It is a refractory oxide and its ceramic fabrication process involves a very high temperature sintering treatment considering that thoria melting point is very high (3,650 K). Cations of elements of the group VB (V, Nb and Ta) have a known effect in the reduction of thoria sintering temperature. IPEN has initiated an investigation about the use of niobium as a dopant for thoria sintering temperature reduction. The thoria used in the research was produced in the IPEN’s pilot plant and different amounts of niobium oxide (Nb2O5) will be added to thoria by different routes. The powders will be compressed and the compacted pellets will be sintered at different temperatures. The influence of the different parameters in the density of sintered pellets is being investigated. This paper presents the chemical and physical characterization for the thoria used in the investigation.

    Palavras-Chave: chemical analysis; density; historical aspects; niobium oxides; nuclear fuels; pellets; reduction; sintering; temperature range 0400-1000 k; thorium; brazilian cnen


  • IPEN-DOC 21317

    METAIRON, S. ; ZAMBONI, C.B. ; SUZUKI, M.F. ; BUENO JUNIOR, C.R.; ANDRADE, T.O.; LANDINI, V.; CANGUSSU, E.B.; ZATZ, M.. Tracking inorganic elements in GRMD blood dogs submitted to hASCs investigated by NAA technique. Journal of Radioanalytical and Nuclear Chemistry, v. 307, n. 3, p. 1645-1649, 2016.

    Palavras-Chave: blood; neutron activation analysis; inorganic compounds; multi-element analysis; calcium; iron; dogs; adipose tissue; diseases; muscles


  • IPEN-DOC 23952

    OLIVEIRA, A.E.; IWAHARA, A.; SILVA, C.J.; CRUZ, P.A.L.; POLEDNA, R.; SILVA, R.L.; LARANJEIRA, A.S.; DELGADO, J.U.; TAUHATA, L.; LOUREIRO, J.S.; TOLEDO, B.C.; BRAGHIROLLI, A.M.S.; ANDRADE, E.A.L.; SILVA, J.L.; HERNANDES, H.O.K.; VALENTE, E.S.; DALLE, H.M.; ALMEIDA, V.M.; SILVA, T.G.; FRAGOSO, M.C.F.; OLIVEIRA, M.L.; NASCIMENTO, E.S.S.; OLIVEIRA, E.M. ; HERRERIAS, R. ; SOUZA, A.A. ; BAMBALAS, E. ; BRUZINGA, W.A. . Traceability from governamental producers of radiopharmaceuticals in measuring 18F in Brazil. Applied Radiation and Isotopes, v. 109, p. 236-241, 2016. DOI: 10.1016/j.apradiso.2015.11.051

    Abstract: Since the inception of its proficiency test program to evaluate radionuclide measurement in hospitals and clinics, the National Metrology Laboratory of Ionizing Radiation-LNMRI, that represents Brazilian National Metrology Institute (NMI) for ionizing radiation has expanded its measurement and calibration capability. Requirements from the National Health Surveillance Agency from Ministry of Health (ANVISA), to producers of radiopharmaceuticals provided an opportunity to improve the full traceability chain to the highest level. Fluorodeoxyglucose (FDG-18F) is the only radiopharmaceutical simultaneously produced by all Brazilian radiopharmaceutical production centers (RPCs). By running this proficiency test, LNMRI began to provide them with the required traceability. For evaluation, the ratio of RPC to reference value results and ISO/IEC17043:2010 criteria were used. The reference value established as calibration factor on the secondary standard ionization chamber was obtained from three absolute measurements systems, and routinely confirmed in each round of proficiency test by CIEMAT/NIST liquid scintillation counting. The γ-emitting impurities were checked using a High-Purity Germanium (HPGe) detector. The results show that Brazilian RPCs are in accordance with (accuracy within 710%) the Brazilian standard for evaluation of measurements with radionuclide calibrators (CNEN NN 3.05., 2013). Nevertheless, the RPCs should improve the methodology of uncertainty estimates, essential when using the statistical criteria of ISO/IEC 17043 standard, in addition to improving accuracy to levels consistent with their position in the national traceability chain


  • IPEN-DOC 21316

    FRANKLIN, ROBSON L.; FAVARO, DEBORAH I.T. ; DAMATTO, SANDRA R. . Trace metal and rare earth elements in a sediment profile from the Rio Grande Reservoir, São Paulo, Brazil: determination of anthropogenic contamination, dating, and sedimentation rates. Journal of Radioanalytical and Nuclear Chemistry, v. 307, n. 1, p. 99-110, 2016.

    Palavras-Chave: enrichment; metals; trace amounts; sediments; lead 210; water reservoirs; pollution; age estimation; sedimentation; neutron activation analysis


  • IPEN-DOC 22665

    FRANKLIN, R.L.; SILVA, S.A.; FAVARO, D.I.T. ; LUIZ-SILVA, W.. Trace and some rare earth elements distribution in a sediment profile from Jurumirim Reservoir, São Paulo State, Brazil: total content and extracted phases. Journal of Radioanalytical and Nuclear Chemistry, v. 309, n. 1, p. 439-451, 2016. DOI: 10.1007/s10967-016-4785-6

    Abstract: Vertical distribution of some rare earth elements (REEs) and trace elements through a Jurumirim Reservoir sediment core is presented. REE fractionation using BCR sequential extraction protocol was performed to verify REE mobility in the environment. Three steps (exchangeable, reducible, oxidizable) and residual fractions were studied and REE distribution for each was evaluated by ICP-MS. REEs showed a higher affinity for the reducible phase. Instrumental neutron activation analysis was also applied to sediment samples to determine the total mass fraction for some REE (Ce, Eu, La, Lu, Nd, Sm, Tb, and Yb). The diagrams normalized to chondrite values were used for a REE distribution pattern evaluation.

    Palavras-Chave: distribution; elements; fractionation; icp mass spectroscopy; neutron activation analysis; particle mobility; rare earths; sediments; water reservoirs; brazil


  • IPEN-DOC 23537

    OLIVEIRA, MARIA J.A. de ; MAIA, REGINA; BRAZ, LUCIA A.; LUGAO, ADEMAR B. ; AMATO, VALDIR S.; PARRA, DUCLERC F. . Topical treatment of cutaneous leishmaniasis: wound reduction in mice using n-methyl glucamine from pvp and nano clay membranes. Journal of Dermatology Research and Therapy, v. 2, n. 5, p. 1-4, 2016. DOI: 10.23937/2469-5750/1510036

    Abstract: Biomaterials comprise a scientific field where synthetic materials are developed for pertinent biological functions, yielding a wide diversity of new products. Although widely employed, they still require improvement for therapeutic purposes. The objective of this study was to develop poly (N-2-vinyl-pyrrolidone) (PVP), poly (vinyl alcohol) (PVAl), clay, and N-methyl glucamine hydrogels for the treatment of cutaneous leishmaniasis. The characterization techniques used were tumescence, energy-dispersive X-ray (EDX) spectroscopy. Clay and antimoniate were found to disperse homogeneously in the polymeric matrix. Evaluation of cytotoxicity showed negative result. The in vivo tests used 12 BALB/c infected with 3 × 104 amastigotes/mL of L. (L.) amazonensis. All mice (4/4) from group II presented reduction of diameter wounds after submitted to PVP, PVAl, clay (1,5%), and N-methyl glucamine (2.3 mg) hydrogels, differently from group I PVP, PVAl, and N-methyl glucamine (1 mg) and III (control). Classified as results of a clinical cure, drug release was efficient and such a matrix is a potential contributor to an alternative human therapy capable of increasing the quality of life of a patient who cannot use medication in the conventional way because of side effects.


  • IPEN-DOC 22427

    ANTONIO, PATRICIA L. ; GRONCHI, CLAUDIA C.; OLIVEIRA, RAQUEL A.P.; KHOURY, HELEN J.; CALDAS, LINDA V.E. . TL and OSL dosimetric properties of Opal gemstone for gamma radiation dosimetry. Radiation Measurements, v. 90, p. 219-223, 2016.

    Palavras-Chave: thermoluminescence; opals; luminescence; gamma radiation; dosimetry; x-ray diffraction; scanning electron microscopy; x-ray spectroscopy; australia; cobalt 60; dosemeters


  • IPEN-DOC 23051

    CARDOSO-GUSTAVSON, POLIANA; FERNANDES, FRANCINE F.; ALVES, EDENISE S.; VICTORIO, MARIANA P.; MOURA, BARBARA B.; DOMINGOS, MARISA; ALBUQUERQUE, CAROLINE R. ; RIBEIRO, ANDREZA P.; NIEVOLA, CATARINA C.; FIGUEIREDO, ANA M.G. . Tillandsia usneoides: a successful alternative for biomonitoring changes in air quality due to a new highway in São Paulo, Brazil. Environmental Science and Pollution Research, v. 23, n. 2, p. 1779-1788, 2016. DOI: 10.1007/s11356-015-5449-8

    Observação: Editorial Note (arquivo anexado) em 2017, 24:12015. DOI: 10.1007/s11356-017-9033-2.

    Abstract: Tillandsia usneoides is an aerial epiphytic bromeliad that absorbs water and nutrients directly from the atmosphere by scales covering its surface. We expanded the use of this species as a broader biomonitor based on chemical and structural markers to detect changes in air quality. The usefulness of such comprehensive approach was tested during the construction and opening of a highway (SP-21) in São Paulo State, Brazil. The biomonitoring study was performed from 2009 to 2012, thus comprising the period during construction and after the highway inauguration. Metal accumulation and structural alterations were assessed, in addition to microscopy analyses to understand the metal chelation in plant tissues and to assess the causes of alterations in the number and shape of scale cells. Altogether, our analyses support the use of this species as a wide biomonitor of air quality in urbanized areas.

    Palavras-Chave: brazil; air pollution monitoring; plants; plant cells; neutron activation analysis; mutagenesis; air quality; pollution sources; metals


  • IPEN-DOC 23519

    LAINETTI, PAULO E.O. . Thorium and its future importance for nuclear energy generation. Journal of Energy and Power Engineering, v. 10, n. 10, p. 600-605, 2016. DOI: 10.17265/1934-8975/2016.10.003

    Abstract: Thorium was discovered in 1828 by the Swedish chemist Jons J. Berzelius. Despite some advantages over uranium for use in nuclear reactors, its main use, in the almost two centuries since its discovery, thorium was restricted to use for gas mantles, especially in the early 20th century. In the beginning of the nuclear era, many countries had interested on thorium, particularly during the 1950-1970 period. There are about 435 nuclear reactors in the world nowadays. They need more than 65,000 tons of uranium yearly. The future world energy needs will increase and, even if we assumed a conservative contribution of nuclear generation, there will be a significant increasing in the uranium prices occur, taking into account that uranium, as used in the present thermal reactors, is a finite resource. Thorium is nearly three times more abundant than uranium in the Earth’s crust. Despite thorium is not a fissile material, 232Th can be converted to 233U (fissile) more efficiently than 238U to 239Pu. Besides this, since it is possible to convert thorium waste into non-radioactive elements, thorium is an environment-friendly alternative energy source. Thorium fuel cycle is also inherently resistant to proliferation. Some papers evaluate the thorium resources in Brazil over 1,200,000 metric t. Then, the thorium alternative must be seriously considered in Brazil for strategic reasons. In this paper a brief history of thorium is presented, besides a review of the world thorium utilization and a discussion about advantages and restrictions of thorium use.

    Palavras-Chave: abundance; fertile materials; historical aspects; nuclear energy; nuclear fuels; power generation; processing; thorium


  • IPEN-DOC 22510

    JUNOT, DANILO O.; BARROS, JADSON P.; CALDAS, LINDA V.E. ; SOUZA, DIVANIZIA N.. Thermoluminescent analysis of CaSO4:Tb,Eu crystal powder for dosimetric purposes. Radiation Measurements, v. 90, p. 228-232, 2016.

    Palavras-Chave: thermoluminescence; dosimetry; doped materials; calcium sulfates; terbium; europium; crystals; x-ray diffraction; radioluminescence; feasibility studies; crystal growth


  • IPEN-DOC 22996

    OLIANI, WASHINGTON L. ; KOMATSU, LUIZ G.H. ; LUGAO, ADEMAR B. ; PARRA, DUCLERC F. . Thermal ageing and accelerated weathering of HMSPP: structural and morphological studies. Macromolecular Symposia, v. 367, n. 1, p. 18-23, 2016. DOI: 10.1002/masy.201500135

    Abstract: This work focuses of the influence of weathering factors UV radiation, humidity, and temperature on the structure and morphology poly(propylene) (PP) with high melt strength (HMSPP), also called poly(propylene) modified by irradiation. The HMSPP was prepared from isotactic poly(propylene) (iPP) in presence of acetylene at 110 kPa pressure and irradiated with g of 60Co at doses of 5, 12.5 and 20 kGy. It has been observed that HMSPP deteriorates in the weathering and thermal resistance, and the long-term stability of HMSPP, beyond substantial color changes. The aged samples were characterized by infrared spectroscopy (FTIR), optical microscopy (OM) and differential scanning calorimetry (DSC). The optical microscopy shows different mechanisms on thermal and artificial weathering ageing. The ageing result under elevated temperature in HMSPPs exposed surfaces follows the order: HMSPP 20>12.5>5 kGy>iPP. The intense crack formation in surface exposed justifies thermooxidative degradation.

    Palavras-Chave: weathering; gamma radiation; chemical radiation effects; cobalt 60; optical microscopy; infrared spectra; aging; acetylene; calorimetry; stability; morphology; cracks; polypropylene


  • IPEN-DOC 22449

    PINTO, NATHALI C.; CHAVANTES, M.C.; ZEZELL, DENISE ; DEANA, ALESSANDRO; BENETTI, CAROLINA ; MARCOS, RODRIGO L.; LOPES, LUCIANA A.; MARTINS, A.B.L.; AIELLO, VERA D.; JATENE, FABIO B.; POMERANTZEFF, PABLO M.A.. The use of a high-power laser on swine mitral valve chordae tendineae. Lasers in Medical Science, v. 31, p. 1075-1081, 2016.

    Palavras-Chave: therapeutic uses; valves; biological repair; heart; lasers; swine; in vivo; animals; histological techniques; rheumatic diseases; surgery; mechanical tests; electron microscopy


  • IPEN-DOC 22395

    LIMA, VERA M.F. de ; PEREIRA JUNIOR, ALFREDO. The plastic glial-synaptic dynamics within the neuropil: A self-organizing system composed of polyelectrolytes in phase transition. Neural Plasticity, v. 2016, p. 192427-1 - 192427-20, 2016.

    Palavras-Chave: electrolytes; membranes; brain; nervous system; mathematical models; brain; plasticity; animal cells


  • IPEN-DOC 22450

    SABINO, CAETANO P. ; DEANA, ALESSANDRO M.; YOSHIMURA, TANIA M. ; SILVA, DANIELA F.T. da; FRANCA, CRISTIANE M.; HAMBLIN, MICHAEL R.; RIBEIRO, MARTHA S. . The optical properties of mouse skin the visible and near infrared spectral regions. Journal of Photochemistry and Photobiology, B: Biology, v. 160, p. 72-78, 2016.

    Palavras-Chave: animal tissues; spectroscopy; optics; diagnosis; therapy; radiant heat transfer; optical properties; mice; skin; near infrared radiation; infrared spectra


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.


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, .

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).



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.