Navegação por autor "947"

Classificar por: Ordenar: Resultados:

  • IPEN-DOC 26613

    COSTA, RAFAEL da S. ; PERONI, CIBELE N. . Comparação da eficiência entre vetores contendo a sequência complementar com ou sem a região downstream (3') do hormônio de crescimento humano em células HEK-293. In: PROGRAMA INSTITUCIONAL DE BOLSAS DE INICIACAO CIENTIFICA E TECNOLOGICA; SEMINARIO ANUAL PIBIC, 25.; SEMINARIO ANUAL PROBIC, 16.; SEMINARIO ANUAL PIBITI, 9, 6-7 de novembro, 2019, São Paulo, SP. Resumo expandido... São Paulo: IPEN-CNEN/SP, 2019. p. 142-143.

    Palavras-Chave: sth; animal cells; vectors; plasmids; genetics

    Como referenciar este item
    Icon

  • IPEN-DOC 28450

    GOMES, ALISSANDRA de M. ; JESUS, GUSTAVO P.P. de ; ZACARIAS, ENIO A. ; YOSIDAKI, VANESSA L. ; LIMA, DARLE B. de ; COSTA, RAFAEL S. ; RANGEL, ERIKA B.; SOUSA, POLIANA E.S.; SILVA, CHRISTIAN S.; BARTOLINI, PAOLO ; PERONI, CIBELE N. . A comparison between two populations of mesenchymal stem cells that can improve the osteogenesis imperfecta mouse phenotype. In: CONGRESS OF THE BRAZILIAN SOCIETY FOR CELL BIOLOGY, 20th, January 27-29, 2021, Online. Abstract... São Paulo, SP: Sociedade Brasileira de Biologia Celular, 2021. p. 249-250.

    Abstract: Osteogenesis imperfecta (OI) is an inherited disease characterized by fragility, deformity and low bone density, besides other clinical manifestations. Type-I OI is the mildest and most common form of the disease, caused by a mutation in the COL1A1 gene and resulting in half normal-collagen production. Our purpose was to compare mesenchymal stem cells from bone marrow (BM-MSCs) with those from adipose tissue (AD-MSCs), both used for improving heterozygous oim mice phenotype, similar to human type-I OI. Mice were irradiated and cells injected into femoral condyles, bone mineral density (BMD) and femoral length were measured by X-ray, at the beginning and end of the assay. Femurs and quadriceps allowed bone fragility evaluation by biomechanical test and collagen Col1a1 and Col1a2 quantification via ELISA. BMD showed no significant difference between the groups, while femur length variation was higher in the BM-MSCs group, compared with the control (P=0.0301). Fragility was improved with AD-MSCs when flexion extension to fracture (P=0.0028) and time to fracture (P=0.0032) were evaluated. There was no significant difference in the maximum load supported by femurs until fracture. An increase in Col1a1 concentration with BM-MSCs in comparison with AD-MSCs (P=0.0281) was obtained. Although no significant difference in Col1a2 concentration was observed between the groups, a higher expression level was obtained with AD-MSCs. We can thus conclude that AD-MSCs were more efficient than BM-MSCs for improving bone quality in type-I OI.

    Como referenciar este item
    Icon

  • IPEN-DOC 26095

    ZACARIAS, ENIO A. ; GOMES, ALISSANDRA de M. ; JESUS, GUSTAVO P.P. de ; YOSIDAKI, VANESSA de L. ; BARTOLINI, PAOLO ; PERONI, CIBELE N. . Efficiency comparison between vectors containing the genomic or complementary DNA sequences of human growth hormone in an animal model of gene therapy. Journal of Cell Science & Therapy, v. 10, p. 34-34, 2019. DOI: 10.4172/2157-7013-C2-053

    Abstract: Our group has been working with gene therapy models for growth hormone deficiency. We are using an in vivo approach in which expression vectors containing the growth hormone (GH) gene are administered in mice, followed by electrotransference. In previous studies, elevated levels of human GH (hGH) in mice serum (~20 ng/ mL) and high growth approximation to normal mice (catch-up growth) of ~70% for body weight and of ~80% for femur length were obtained, using a plasmid containing the genomic sequence (gDNA) of GH with the ubiquitin-C promoter. On the other hand, we had an indication that the complementary sequence (cDNA) may have an advantage over gDNA in gene therapy protocols. Our objective is to carry out a comparative study between vectors containing the hGH gDNA or cDNA sequences. First, the two vectors were analyzed for in vitro expression levels by transfecting HEK-293 cells. Expression levels reached 250+50 ng hGH/mL for gDNA and 20+9.4 ng hGH/mL for cDNA transfected cells. Although in vitro expression of cDNA-containing vector was lower than that containing gDNA, we believe the cDNA vector may have better expression in vivo, due to a possible better incorporation by the muscle cells in electrotransference. Then, bioassays will be performed administering these vectors into dwarf mice, via electrotransference in the muscle. This will verify the expression profile of GH in vivo, concerning levels and durability, as well as body weight, total body, tail and femur length, mouse insulin-like growth factor-1 levels and catch-up growth.

    Como referenciar este item
    Icon

  • IPEN-DOC 26093

    GOMES, ALISSANDRA de M. ; JESUS, GUSTAVO P.P. de ; ZACARIAS, ENIO A. ; YOSIDAKI, VANESSA L. ; HIGUTI, ELIZA; RANGEL, ERIKA B.; BARTOLINI, PAOLO ; PERONI, CIBELE N. . Electrotransference of the mouse growth hormone gene associated with the administration of mesenchymal stem cells, in a murine model of osteogenesis imperfecta. Journal of Cell Science & Therapy, v. 10, p. 35-35, 2019. DOI: 10.4172/2157-7013-C2-053

    Abstract: Osteogenesis imperfecta (OI) is an inherited connective tissue disease characterized by fragility, deformity and low bone density, as well as by other clinical manifestations. Type I OI is the mildest and most common form of the disease, caused by mutation in the COL1A1 gene, resulting in the production of only ~50% of normal collagen. The corresponding animal model is the oim mouse, presenting a phenotype very similar to human type I OI. We aim, for the first time, at evaluating the electrotransference of mouse growth hormone (mGH) gene, encoding a protein that already showed therapeutic effects, together with the administration of murine mesenchymal stem cells (MSCs), for improving heterozygous oim mice phenotype. We already prepared and evaluated two populations of MSCs (bone marrow and adipose tissue) that emit red fluorescence. These are administrated in different amounts and via three routes (intravenously, intraperitoneally or locally into the femoral condyles) using the in vivo imaging system and histological sections of femur, liver and kidneys, a methodology we recently set up and adapted to our specific conditions. Then, we will administer the most efficient MSCs population combined with mGH gene electrotransfer. In this bioassay, we are ready to analyse different parameters: body weight, total body, tail and femur length, bone mineral density and femur fragility by a biomechanical flexion test. The results will indicate if the administration of GH by gene therapy, together with MSCs infusion, can be a promising treatment for improving type I OI phenotype.

    Como referenciar este item
    Icon

  • IPEN-DOC 29989

    DUTTON, VALENTINA A. ; PERONI, CIBELE N. . Expressão do fator de crescimento semelhante à insulina‐1 de camundongo (mIGF‐1) em células HEK293 utilizando diferentes vetores de expressão. In: PROGRAMA INSTITUCIONAL DE BOLSAS DE INICIAÇÃO CIENTÍFICA; SEMINÁRIO ANUAL PIBIC, 29.; SEMINÁRIO ANUAL PROBIC, 20.; SEMINÁRIO ANUAL PIBITI, 13., 23-24 de novembro, 2023, São Paulo, SP. Resumo expandido... São Paulo, SP: IPEN-CNEN/SP, 2023.

    Como referenciar este item
    Icon

  • IPEN-DOC 27182

    WASINSKI, FREDERICK; FURIGO, ISADORA C.; TEIXEIRA, PRYSCILA D.S.; RAMOS-LOBO, ANGELA M.; PERONI, CIBELE N. ; BARTOLINI, PAOLO ; LIST, EDWARD O.; KOPCHICK, JOHN J.; DONATO JUNIOR, JOSE. Growth hormone receptor deletion reduces the density of axonal projections from hypothalamic arcuate nucleus neurons. Neuroscience, v. 434, p. 136-147, 2020. DOI: 10.1016/j.neuroscience.2020.03.037

    Abstract: The arcuate nucleus (ARH) is an important hypothalamic area for the homeostatic control of feeding and other metabolic functions. In the ARH, proopiomelanocortin- (POMC) and agouti-related peptide (AgRP)- expressing neurons play a key role in the central regulation of metabolism. These neurons are influenced by circulating factors, such as leptin and growth hormone (GH). The objective of the present study was to determine whether a direct action of GH on ARH neurons regulates the density of POMC and AgRP axonal projections to major postsynaptic targets. We studied POMC and AgRP axonal projections to the hypothalamic paraventricular (PVH), lateral (LHA) and dorsomedial (DMH) nuclei in leptin receptor (LepR)-deficient mice (Leprdb/db), GH-deficient mice (Ghrhrlit/lit) and in mice carrying specific ablations of GH receptor (GHR) either in LepR- or AgRP-expressing cells. Leprdb/db mice presented reduction in the density of POMC innervation to the PVH compared to wild-type and Ghrhrlit/lit mice. Additionally, both Leprdb/db and Ghrhrlit/lit mice showed reduced AgRP fiber density in the PVH, LHA and DMH. LepR GHR knockout mice showed decreased density of POMC innervation in the PVH and DMH, compared to control mice, whereas a reduction in the density of AgRP innervation was observed in all areas analyzed. Conversely, AgRP-specific ablation of GHR led to a significant reduction in AgRP projections to the PVH, LHA and DMH, without affecting POMC innervation. Our findings indicate that GH has direct trophic effects on the formation of POMC and AgRP axonal projections and provide additional evidence that GH regulates hypothalamic neurocircuits controlling energy homeostasis.

    Palavras-Chave: hormones; peptide hormones; receptors; hypothalamus; food; intake; polypeptides; nerve cells

    Como referenciar este item
    Icon

  • IPEN-DOC 26094

    JESUS, GUSTAVO P.P. de ; GOMES, ALISSANDRA de M. ; ZACARIAS, ENIO A. ; YOSIDAKI, VANESSA de L. ; BARTOLINI, PAOLO ; PERONI, CIBELE N. . Intramuscular growth hormone plasmid DNA eletrotransfer effects on bone quality in a murine model of osteogenesis imperfecta. Journal of Cell Science & Therapy, v. 10, p. 36-36, 2019. DOI: 10.4172/2157-7013-C2-053

    Abstract: Osteogenesis imperfecta (OI) is a congenital dysplasia of connective tissue characterized mainly by fragility and low bone density. The type I OI, a mild form of the disease, is associated with the quantitative decrease of type I collagen in the extracellular matrix, a characteristic also observed in the oim mice used in pre-clinical OI research. Previous studies have shown the efficiency of recombinant human growth hormone (GH) treatment for OI, both in animal and human models, reducing bone fragility, increasing bone density and stimulating α 1 and α 2 procollagen synthesis. This work aimed at using plasmid containing the murine GH (mGH) gene to treat oim heterozygous mice. Serological quantification of mGH by ELISA was carried out to evaluate the plasmid expression, bone density by DEXA and three-point flexion test were performed on the femurs to assess bone quality. In a short-term (3-day) trial, mGH levels of treated animals were 20.6±6.6 ng/mL, versus 3.3±2.2 ng/mL for those receiving saline and 2.3±1.3 ng/mL for the untreated wild-type group. A 90-day assay with plasmid applications at 0, 30 and 60 days was performed in parallel. The results of bone density showed greater effectiveness of the hormone during the first month of treatment, with a 34% increase in comparison with the saline group, whereas in the second month there was no significant statistical difference (p>0.05). The three-point bending test and the final analysis of bone density are currently being carried out.

    Como referenciar este item
    Icon

  • IPEN-DOC 29601

    LIMA, ELIANA R. ; FREIRE, RENAN P. ; SUZUKI, MIRIAM F. ; OLIVEIRA, JOAO E. ; YOSIDAKI, VANESSA L. ; PERONI, CIBELE N. ; SEVILHANO, THAIS ; ZORZETO, MOISES; TORATI, LUCAS S.; SOARES, CARLOS R.J. ; LIMA, IGOR D. de M.; KRONENBERGER, THALES; MALTAROLLO, VINICIUS G.; BARTOLINI, PAOLO . Isolation and characterization of the Arapaima gigas growth hormone (ag-GH) cDNA and three-dimensional modeling of this hormone in comparison with the human hormone (hGH). Biomolecules, v. 13, n. 1, p. 1-17, 2023. DOI: 10.3390/biom13010158

    Abstract: In a previous work, the common gonadotrophic hormone α-subunit (ag-GTHα), the ag-FSH β- and ag-LH β-subunit cDNAs, were isolated and characterized by our research group from A. gigas pituitaries, while a preliminary synthesis of ag-FSH was also carried out in human embryonic kidney 293 (HEK293) cells. In the present work, the cDNA sequence encoding the ag-growth hormone (ag-GH) has also been isolated from the same giant Arapaimidae Amazonian fish. The ag-GH consists of 208 amino acids with a putative 23 amino acid signal peptide and a 185 amino acid mature peptide. The highest identity, based on the amino acid sequences, was found with the Elopiformes (82.0%), followed by Anguilliformes (79.7%) and Acipenseriformes (74.5%). The identity with the corresponding human GH (hGH) amino acid sequence is remarkable (44.8%), and the two disulfide bonds present in both sequences were perfectly conserved. Three-dimensional (3D) models of ag-GH, in comparison with hGH, were generated using the threading modeling method followed by molecular dynamics. Our simulations suggest that the two proteins have similar structural properties without major conformational changes under the simulated conditions, even though they are separated from each other by a >100 Myr evolutionary period (1 Myr = 1 million years). The sequence found will be used for the biotechnological synthesis of ag-GH while the ag-GH cDNA obtained will be utilized for preliminary Gene Therapy studies.

    Palavras-Chave: fishes; pituitary hormones; gonadotropins; molecules; cloning; dna sequencing

    Como referenciar este item
    Icon

  • IPEN-DOC 27539

    LIMA, ELIANA R. ; CECCHI, CLAUDIA R. ; HIGUTI, ELIZA ; JESUS, GUSTAVO P.P. de ; GOMES, ALISSANDRA M. ; ZACARIAS, ENIO A. ; BARTOLINI, PAOLO ; PERONI, CIBELE N. . Optimization of mouse growth hormone plasmid DNA electrotransfer into tibialis cranialis muscle of "little" mice. Molecules, v. 25, n. 21, p. 1-9, 2020. DOI: 10.3390/molecules25215034

    Abstract: Previous non-viral gene therapy was directed towards two animal models of dwarfism: Immunodeficient (lit/scid) and immunocompetent (lit/lit) dwarf mice. The former, based on hGH DNA administration into muscle, performed better, while the latter, a homologous model based on mGH DNA, was less efficient, though recommended as useful for pre-clinical assays. We have now improved the growth parameters aiming at a complete recovery of the lit/lit phenotype. Electrotransfer was based on three pulses of 375 V/cm of 25 ms each, after mGH-DNA administration into two sites of each non-exposed tibialis cranialis muscle. A 36-day bioassay, performed using 60-day old lit/lit mice, provided the highest GH circulatory levels we have ever obtained for GH non-viral gene therapy: 14.7 ± 3.7 ng mGH/mL. These levels, at the end of the experiment, were 8.5 ± 2.3 ng/mL, i.e., significantly higher than those of the positive control (4.5 ± 1.5 ng/mL). The catch-up growth reached 40.9% for body weight, 38.2% for body length and 82.6%–76.9% for femur length. The catch-up in terms of the mIGF-1 levels remained low, increasing from the previous value of 5.9% to the actual 8.5%. Although a complete phenotypic recovery was not obtained, it should be possible starting with much younger animals and/or increasing the number of injection sites.

    Palavras-Chave: gene therapy; hormones; dna; muscles; mice; plasmids; bioassay

    Como referenciar este item
    Icon

  • IPEN-DOC 27126

    DALTOE, FELIPE P.; OLIVEIRA, NÉLIO A.J. de ; PERONI, CIBELE N. ; SHARPE, PAUL T.; MANTESSO, ANDREA. Phenotype changes of oral epithelial stem cells after in vitro culture. Brazilian Oral Research, v. 34, p. 1-8, 2020. DOI: 10.1590/1807-3107bor-2020.vol34.0033

    Abstract: The aim of our study was to isolate populations of keratinocyte stem cells based on the expression of cell surface markers and to investigate whether the culture could affect their phenotype. keratinocytes from human oral mucosa were sorted based on the expression of the epithelial stem cell markers p75NTR and CD71. We also examined the co-expression of other epithelial stem markers such as integrins β1 and α6 and their stem cell-like proprieties in in vitro assays. Three passages after being sorted by MACS, more than 93% of the p75NTR+ve cells lost the expression of p75NTR, while 5.46% of the p75NTR-ve gained it. Within the small population of the p75NTR+ve cells, 88% co-expressed other epithelial stem cell markers such as integrins β1 and α6, while only 28% of p75NTR-ve cells co-expressed these markers. These results were confirmed by sorting cells by FACS. Additionally, when double staining was used for sorting cells, 99% of the p75NTR+veCD71-ve and 33% of the p75NTR-veCD71+ve cells expressed both integrins, but just one week after culture, only 1.74% of the p75NTR+veCD71-ve cells still expressed p75NTR and only 0.32% still expressed CD71. Similar results were obtained when co-culturing p75NTR+ve and p75NTR-ve populations before analysis. Our results suggest that phenotype changes may be part of an intrinsic cellular mechanism to conserve levels of protein expression as they may found in the human body. In addition, in vitro culture may not offer ideal conditions for epithelial stem cell maintenance due to phenotype changes under standard culture conditions.

    Palavras-Chave: stem cells; phenotype; mucous membranes; oral cavity; epithelium; animal cells; animal tissues; cell cultures; in vitro

    Como referenciar este item
    Icon

  • IPEN-DOC 29717

    CECCHI, CLAUDIA R. ; ALSING, SIDSEL; JESUS, GUSTAVO P.P. ; ZACARIAS, ENIO A. ; KJAER, LISBETH; CLEMENT, MICHELLE S.; KUMAGAI-BRAESCH, MAKIKO; CORYDON, THOMAS J.; BARTOLINI, PAOLO ; PERONI, CIBELE N. ; AAGAARD, LARS. Sustained secretion of human growth hormone from TheraCyte devices encapsulated with PiggyBac-engineered retinal pigment epithelium cells. Tissue and Cell, v. 82, p. 1-13, 2023. DOI: 10.1016/j.tice.2023.102095

    Abstract: Growth hormone (GH) deficiency is characterized by impaired growth and development, and is currently treated by repeated administration of recombinant human GH (hGH). Encapsulated cell therapy (ECT) may offer a less demanding treatment-strategy for long-term production and release of GH into circulation. We used PiggyBac-based (PB) transposon delivery for engineering retinal pigment epithelial cells (ARPE-19), and tested a series of viral and non-viral promoters as well as codon-optimization to enhance transgene expression. Engineered cells were loaded into TheraCyte macrocapsules and secretion was followed in vitro and in vivo. The cytomegalovirus (CMV) promoter supports strong and persistent transgene expression, and we achieved clonal cell lines secreting over 6 µg hGH/106 cells/day. Codon-optimization of the hGH gene did not improve secretion. ARPE-19 cells endured encapsulation in TheraCyte devices, and resulted in steady hormone release for at least 60 days in vitro. A short-term pilot experiment in immunodeficient SCID mice demonstrated low systemic levels of hGH from a single 40 µL capsule implanted subcutaneously. No significant increase in weight increase or systemic hGH was detected after 23 days in the GH-deficient lit/SCID mouse model using 4.5 µL capsules loaded with the highest secreting clone of ARPE-19 cells. Our results demonstrate that PB-mediated engineering of ARPE-19 is an efficient way to generate hormone secreting cell lines compatible with macroencapsulation, and our CMV-driven expression cassette allows for identification of clones with high level and long-term secretory activity without addition of insulator elements. Our results pave the way for further in vivo studies of encapsulated cell therapy.

    Palavras-Chave: hormones; sth; epithelium; pigments; therapy

    Como referenciar este item
    Icon

  • IPEN-DOC 26714

    LINARDI, MARCELO ; NETTO, ANA P.F.A. ; LUGAO, ADEMAR B. ; FREITAS, ANDERSON Z. de ; CARBONARI, ARTUR W. ; ZEITUNI, CARLOS A. ; SOARES, CARLOS R.J. ; SILVA, CECILIA C.G. e ; ZAMBONI, CIBELE B. ; PERONI, CIBELE N. ; VIEIRA, DANIEL P. ; ANDRADE, DELVONEI A. de ; ZEZELL, DENISE M. ; LAZAR, DOLORES R.R. ; PARRA, DUCLERC F. ; MOREIRA, EDSON G. ; LANDULFO, EDUARDO ; FONSECA, EDVALDO R.P. da ; PERINI, EFRAIN A. ; ARAUJO, ELAINE B. de ; MUCCILLO, ELIANA N. dos S. ; CARVALHO, ELITA F.U. de ; BERNARDES, EMERSON S. ; MOURA, ESPERIDIANA A.B. de ; SILVA, FABIANA M. da ; MOREIRA, FERNANDO J.F. ; SILVA, FLAVIA R. de O. ; GENEZINI, FREDERICO A. ; ALVES, GLAUCIE J. ; YORIYAZ, HELIO ; COSTA, ISOLDA ; MENGATTI, JAIR ; ROSSI, JESUALDO L. ; OLIVEIRA, JOAO E. de ; SARKIS, JORGE E. de S. ; PERROTTA, JOSE A. ; ROGERO, JOSE R. ; SHORTO, JULIAN M.B. ; SILVA, LEONARDO G. de A. e ; MOLNARY, LESLIE de ; RODRIGUES, LETICIA L.C. ; DIAS, LIGIA E.M.F. ; CALDAS, LINDA V.E. ; POZZO, LORENA ; GENOVA, LUIS A. ; MATSUDA, MARGARETH M.N. ; HAMADA, MARGARIDA M. ; FELINTO, MARIA C.F. da C. ; POTIENS, MARIA da P.A. ; ROSTELATO, MARIA E.C.M. ; MARUMO, MARIA H.B. ; VASCONCELLOS, MARINA B.A. ; RIBEIRO, MARTHA S. ; COTRIM, MARYCEL E.B. ; NEVES, MAURICIO D.M. das ; MORALLES, MAURICIO ; DIAS, MAURO da S. ; IGAMI, MERY P.Z. ; DURAZZO, MICHELANGELO ; SUZUKI, MIRIAM F. ; SAIKI, MITIKO ; MATHOR, MONICA B. ; VIEIRA JUNIOR, NILSON D. ; BARTOLINI, PAOLO ; SPENCER, PATRICK J. ; SILVA, PAULO S.C. da ; AFFONSO, REGINA ; CARNEIRO, REGINA C.G. ; ROGERO, SIZUE O. ; SAKATA, SOLANGE K. ; CASTANHO, SONIA R.H. de M. ; MAIHARA, VERA A. ; ROSSI, WAGNER de ; CALVO, WILSON A.P. ; KODAMA, YASKO . O IPEN e a saúde. São Paulo, SP: SENAI-SP Editora, 2019. 280 p.

    Palavras-Chave: radiopharmaceuticals; radioactive materials; laser radiation; nuclear medicine; radiotherapy; diagnosis; environmental policy; rmb reactors; reactors

    Como referenciar este item
    Icon

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.