Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis
Ano de defesa: | 2022 |
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Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso embargado |
Idioma: | por |
Instituição de defesa: |
Universidade Estadual da Paraíba
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Programa de Pós-Graduação: |
Programa de Pós-Graduação em Química - PPGQ
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Departamento: |
Pró-Reitoria de Pós-Graduação e Pesquisa - PRPGP
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País: |
Brasil
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Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://tede.bc.uepb.edu.br/jspui/handle/tede/4554 |
Resumo: | Brazil occupies the third place in the production and commercialization of consumed tropical fruits, behind only China and India. In addition to the known fruits, there is also a wide variety of species that are little-known, even by Brazilians themselves, but which have great potential for commercialization in natura or pulp, for example. In terms of Brazilian regions, the Northeast has tropical fruits that are still little explored, among which the fruit of Spondias mombin L., known as cajá or taperebá in the North, stands out. In addition to the striking flavor of the fruit, cajá contains antioxidant substances, flavonoids, phenolic acids, vitamins A and C, anthocyanins and carotenoids in considerable amounts. However, when the fruit is processed, these substances can be lost, affecting total soluble solids, total acidity and pH, for example. In this sense, it is essential to ensure that the marketed product meets the characteristics that the consumer wants in terms of nutritional and functional properties. However, the recommended analyzes are expensive and time-consuming, which make it difficult to control the quality of the products, given that most of the production is carried out by small companies with local or regional marketing. Therefore, the objective of this work was to evaluate the quality parameters of the pulp of S. mombin by evaluating the titratable total acidity (TTA), pH and Total Soluble Solids (SST), using NIR Spectroscopy associated with Partial Least Squares Regression algorithms: iPLS , iSPA-PLS and FF-iPLSR in raw and preprocessed data. Data were preprocessed using SNV, MSC transformations and Savitzky-Golay derivation (with combinations of first and second derivatives, first and second degree polynomials and windows of 17, 21 and 25 points). NIR spectra were obtained using 36 samples in the spectral range from 910 to 1408 nm. The results were evaluated using the predictive capacity in terms of EJCR, RMSEC, RMSEP, Determination Coefficient for Calibration (R2cal) and Prediction (R2pred) and bias. The samples from the calibration (27) and prediction (9) sets were selected by the SPXy algorithm. In terms of the results obtained, for the determination of pH the three models obtained were with FF-iPLS. This was the only type of variable selection that worked for the determination of this property. Getting as values of RMSEC = 0.1330, R2cal = 0.7195, RMSEP = 0.2727, R2pred = 0.0242 (FF-iPLS raw data); RMSEC = 0.0204, R2cal = 0.1748, RMSEP = 0.1412, R2pred = 0.00862 (FF-iPLS SG21_1_1) and RMSEC =0.1909, R2cal = 0.3298, RMSEP = 0.1617, R2pred = 0, 0666 (SG21_2_2). For SST in terms of °brix, they had two suitable models and both used PLS, with values of RMSEC =0.5032, R2cal = 0.8159, RMSEP = 0.9322, R2pred = 0.9999 (model with SNV) and RMSEC =0.5043, R2cal = 0.8150, RMSEP = 0.9300, R2pred = 0.9999 (model with MSC). For acidity, only one model worked, and this one was also with FF-iPLS, having values of RMSEC =0.0072, R2cal = 0.3945, RMSEP = 0.0087, R2pred = 0.0167 (FF-iPLS with SG21_2_2). In this way, the models built with SNV and MSC pre-processing and with the FF-iPLS algorithm presented themselves as an interesting tool for predicting the physical-chemical properties of theft pulp, especially Spondias mombin. |
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Véras Neto, José GermanoAvelar, Maria Fernanda PimentelFernandes, David Douglas de SousaGomes, Mirelly Alexandre2023-04-17T22:16:30Z2999-12-312022-09-19GOMES, Mirelly Alexandre. Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis. 2022. 57f. Dissertação (Programa de Pós-Graduação em Química - PPGQ) - Universidade Estadual da Paraíba, Campina Grande, 2022.http://tede.bc.uepb.edu.br/jspui/handle/tede/4554Brazil occupies the third place in the production and commercialization of consumed tropical fruits, behind only China and India. In addition to the known fruits, there is also a wide variety of species that are little-known, even by Brazilians themselves, but which have great potential for commercialization in natura or pulp, for example. In terms of Brazilian regions, the Northeast has tropical fruits that are still little explored, among which the fruit of Spondias mombin L., known as cajá or taperebá in the North, stands out. In addition to the striking flavor of the fruit, cajá contains antioxidant substances, flavonoids, phenolic acids, vitamins A and C, anthocyanins and carotenoids in considerable amounts. However, when the fruit is processed, these substances can be lost, affecting total soluble solids, total acidity and pH, for example. In this sense, it is essential to ensure that the marketed product meets the characteristics that the consumer wants in terms of nutritional and functional properties. However, the recommended analyzes are expensive and time-consuming, which make it difficult to control the quality of the products, given that most of the production is carried out by small companies with local or regional marketing. Therefore, the objective of this work was to evaluate the quality parameters of the pulp of S. mombin by evaluating the titratable total acidity (TTA), pH and Total Soluble Solids (SST), using NIR Spectroscopy associated with Partial Least Squares Regression algorithms: iPLS , iSPA-PLS and FF-iPLSR in raw and preprocessed data. Data were preprocessed using SNV, MSC transformations and Savitzky-Golay derivation (with combinations of first and second derivatives, first and second degree polynomials and windows of 17, 21 and 25 points). NIR spectra were obtained using 36 samples in the spectral range from 910 to 1408 nm. The results were evaluated using the predictive capacity in terms of EJCR, RMSEC, RMSEP, Determination Coefficient for Calibration (R2cal) and Prediction (R2pred) and bias. The samples from the calibration (27) and prediction (9) sets were selected by the SPXy algorithm. In terms of the results obtained, for the determination of pH the three models obtained were with FF-iPLS. This was the only type of variable selection that worked for the determination of this property. Getting as values of RMSEC = 0.1330, R2cal = 0.7195, RMSEP = 0.2727, R2pred = 0.0242 (FF-iPLS raw data); RMSEC = 0.0204, R2cal = 0.1748, RMSEP = 0.1412, R2pred = 0.00862 (FF-iPLS SG21_1_1) and RMSEC =0.1909, R2cal = 0.3298, RMSEP = 0.1617, R2pred = 0, 0666 (SG21_2_2). For SST in terms of °brix, they had two suitable models and both used PLS, with values of RMSEC =0.5032, R2cal = 0.8159, RMSEP = 0.9322, R2pred = 0.9999 (model with SNV) and RMSEC =0.5043, R2cal = 0.8150, RMSEP = 0.9300, R2pred = 0.9999 (model with MSC). For acidity, only one model worked, and this one was also with FF-iPLS, having values of RMSEC =0.0072, R2cal = 0.3945, RMSEP = 0.0087, R2pred = 0.0167 (FF-iPLS with SG21_2_2). In this way, the models built with SNV and MSC pre-processing and with the FF-iPLS algorithm presented themselves as an interesting tool for predicting the physical-chemical properties of theft pulp, especially Spondias mombin.O Brasil ocupa o terceiro lugar na produção e comercialização de frutas tropicais consumidas, atrás apenas da China e da Índia. Além das frutas conhecidas há também uma grande variedade de espécies pouco conhecidas, mesmo pelos próprios brasileiros, mas que possuem grande potencial para comercialização in natura ou como polpas, por exemplo. Em termos de regiões brasileiras, o Nordeste possui frutas tropicais ainda pouco exploradas, dentre as quais se destaca o fruto de Spondias mombin L., conhecido como cajá ou taperebá no Norte. Além do sabor marcante da fruta, o cajá contém substâncias antioxidantes, flavonoides, ácidos fenólicos, vitaminas A e C, antocianinas e carotenoides em quantidades consideráveis. No entanto, quando a fruta é processada, essas substâncias podem ser perdidas, afetando a quantidade de sólidos solúveis totais, a acidez titulável total e o pH, por exemplo. Nesse sentido é fundamental garantir que o produto comercializado atenda às características que o consumidor deseja em termos de propriedades nutricionais e funcionais. No entanto, as análises recomendadas são caras e demoradas que dificultam o controle de qualidade dos produtos, tendo em vista que a maior parte da produção é realizada por pequenas empresas com comercialização local ou regional. Portanto, o objetivo deste trabalho foi avaliar os parâmetros de qualidade da polpa de S. mombin avaliando a acidez titulável total (ATT), pH e sólidos solúveis totais (SST), utilizando Espectroscopia NIR associada a algoritmos de Regressão de Mínimos Quadrados Parciais: iPLS, iSPA-PLS e FF-iPLSR em dados brutos e pré-processados. Os dados foram processados utilizando-se as transformações SNV, MSC e derivação de Savitzky-Golay (com combinações de derivadas de primeira e segunda, polinômio de primeiro e segundo grau e janela de 17, 21 e 25 pontos). Os espectros NIR foram obtidos utilizando 36 amostras na faixa espectral de 910 a 1408 nm. Os resultados foram avaliados utilizando a capacidade preditiva em termos de EJCR, RMSECV, RMSEP, Coeficiente de Determinação de calibração (R2cal) e de predição (R2pred), bias e RPD. As amostras dos conjuntos de calibração (27) e de predição (9) foram selecionadas pelo algoritmo SPXy. Em termos dos resultados obtidos, para a determinação de pH os três modelos obtidos foi com FF-iPLS. Este foi o único tipo de seleção de variáveis que funcionou para a determinação desta propriedade. Obtendo como valores de RMSEC =0,1330, R2cal = 0,7195, RMSEP = 0,2727, R2pred = 0,0242 (FF-iPLS dados brutos); RMSEC =0,0204, R2cal = 0,1748, RMSEP = 0,1412, R2pred = 0,00862 (FF-iPLS SG21_1_1) e RMSEC =0,1909, R2cal = 0,3298, RMSEP = 0,1617, R2pred = 0,0666 (SG21_2_2). Para SST, em termos de °brix, dois modelos PLS foram adequados, com valores de RMSEC =0,5032, R2cal = 0,8159, RMSEP = 0,9322, R2pred = 0,9999 (modelo com SNV) e RMSEC =0,5043, R2cal = 0,8150, RMSEP = 0,9300, R2pred = 0,9999 (modelo com MSC). Para ATT, apenas um modelo funcionou, e este também foi com FF-iPLS, tendo valores de RMSEC =0,0072, R2cal = 0,3945, RMSEP = 0,0087, R2pred = 0,0167 (FF-iPLS com SG21_2_2). Desta forma, os modelos construídos com pré-processamento SNV e MSC e o com o algoritmo FF-iPLS apresentaram-se como ferramenta interessante para predição das propriedades físico-químicas de polpas de frutas, em especial da Spondias mombin.Submitted by Mirelly Alexandre Gomes (gomesmirelly24@gmail.com) on 2022-10-28T16:11:00Z No. of bitstreams: 2 DS - MIRELLY ALEXANDRE GOMES.pdf: 2772344 bytes, checksum: 9b49fd8ba4c4fa969e5e4096fc4f0bad (MD5) TERMO DE DEPOSITO.pdf: 278922 bytes, checksum: e4f2fc5022143b458174c4f78af94283 (MD5)Approved for entry into archive by Jean Medeiros (jeanletras@uepb.edu.br) on 2022-10-31T16:40:34Z (GMT) No. of bitstreams: 2 DS - MIRELLY ALEXANDRE GOMES.pdf: 2772344 bytes, checksum: 9b49fd8ba4c4fa969e5e4096fc4f0bad (MD5) TERMO DE DEPOSITO.pdf: 278922 bytes, checksum: e4f2fc5022143b458174c4f78af94283 (MD5)Made available in DSpace on 2023-04-17T22:16:30Z (GMT). No. of bitstreams: 2 DS - MIRELLY ALEXANDRE GOMES.pdf: 2772344 bytes, checksum: 9b49fd8ba4c4fa969e5e4096fc4f0bad (MD5) TERMO DE DEPOSITO.pdf: 278922 bytes, checksum: e4f2fc5022143b458174c4f78af94283 (MD5) Previous issue date: 2022-09-19Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfporUniversidade Estadual da ParaíbaPrograma de Pós-Graduação em Química - PPGQUEPBBrasilPró-Reitoria de Pós-Graduação e Pesquisa - PRPGPCalibração multivariadaEspectroscopia vibracionalAlgoritmo bioinspiradoSpondias mombin L.Boinspired algorthmVibrational spectroscopyMultivariate calibrationCIENCIAS EXATAS E DA TERRA::QUIMICADeterminação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-79317878423444719666006006005248714503811102781571700325303117195info:eu-repo/semantics/embargoedAccessreponame:Biblioteca Digital de Teses e Dissertações da UEPBinstname:Universidade Estadual da Paraíba (UEPB)instacron:UEPBORIGINALDS - Mirelly Alexandre GomesDS - Mirelly Alexandre Gomesapplication/pdf2772344http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4554/2/DS+-+Mirelly+Alexandre+Gomes9b49fd8ba4c4fa969e5e4096fc4f0badMD52Termo de depósito BDTDTermo de depósito BDTDapplication/pdf278922http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4554/3/Termo+de+dep%C3%B3sito+BDTDe4f2fc5022143b458174c4f78af94283MD53LICENSElicense.txtlicense.txttext/plain; charset=utf-81960http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4554/1/license.txt6052ae61e77222b2086e666b7ae213ceMD51tede/45542023-04-17 19:16:48.581oai:tede.bc.uepb.edu.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede.bc.uepb.edu.br/jspui/PUBhttp://tede.bc.uepb.edu.br/oai/requestbc@uepb.edu.br||opendoar:2023-04-17T22:16:48Biblioteca Digital de Teses e Dissertações da UEPB - Universidade Estadual da Paraíba (UEPB)false |
dc.title.por.fl_str_mv |
Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis |
title |
Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis |
spellingShingle |
Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis Gomes, Mirelly Alexandre Calibração multivariada Espectroscopia vibracional Algoritmo bioinspirado Spondias mombin L. Boinspired algorthm Vibrational spectroscopy Multivariate calibration CIENCIAS EXATAS E DA TERRA::QUIMICA |
title_short |
Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis |
title_full |
Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis |
title_fullStr |
Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis |
title_full_unstemmed |
Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis |
title_sort |
Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis |
author |
Gomes, Mirelly Alexandre |
author_facet |
Gomes, Mirelly Alexandre |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Véras Neto, José Germano |
dc.contributor.referee1.fl_str_mv |
Avelar, Maria Fernanda Pimentel |
dc.contributor.referee2.fl_str_mv |
Fernandes, David Douglas de Sousa |
dc.contributor.author.fl_str_mv |
Gomes, Mirelly Alexandre |
contributor_str_mv |
Véras Neto, José Germano Avelar, Maria Fernanda Pimentel Fernandes, David Douglas de Sousa |
dc.subject.por.fl_str_mv |
Calibração multivariada Espectroscopia vibracional Algoritmo bioinspirado Spondias mombin L. |
topic |
Calibração multivariada Espectroscopia vibracional Algoritmo bioinspirado Spondias mombin L. Boinspired algorthm Vibrational spectroscopy Multivariate calibration CIENCIAS EXATAS E DA TERRA::QUIMICA |
dc.subject.eng.fl_str_mv |
Boinspired algorthm Vibrational spectroscopy Multivariate calibration |
dc.subject.cnpq.fl_str_mv |
CIENCIAS EXATAS E DA TERRA::QUIMICA |
description |
Brazil occupies the third place in the production and commercialization of consumed tropical fruits, behind only China and India. In addition to the known fruits, there is also a wide variety of species that are little-known, even by Brazilians themselves, but which have great potential for commercialization in natura or pulp, for example. In terms of Brazilian regions, the Northeast has tropical fruits that are still little explored, among which the fruit of Spondias mombin L., known as cajá or taperebá in the North, stands out. In addition to the striking flavor of the fruit, cajá contains antioxidant substances, flavonoids, phenolic acids, vitamins A and C, anthocyanins and carotenoids in considerable amounts. However, when the fruit is processed, these substances can be lost, affecting total soluble solids, total acidity and pH, for example. In this sense, it is essential to ensure that the marketed product meets the characteristics that the consumer wants in terms of nutritional and functional properties. However, the recommended analyzes are expensive and time-consuming, which make it difficult to control the quality of the products, given that most of the production is carried out by small companies with local or regional marketing. Therefore, the objective of this work was to evaluate the quality parameters of the pulp of S. mombin by evaluating the titratable total acidity (TTA), pH and Total Soluble Solids (SST), using NIR Spectroscopy associated with Partial Least Squares Regression algorithms: iPLS , iSPA-PLS and FF-iPLSR in raw and preprocessed data. Data were preprocessed using SNV, MSC transformations and Savitzky-Golay derivation (with combinations of first and second derivatives, first and second degree polynomials and windows of 17, 21 and 25 points). NIR spectra were obtained using 36 samples in the spectral range from 910 to 1408 nm. The results were evaluated using the predictive capacity in terms of EJCR, RMSEC, RMSEP, Determination Coefficient for Calibration (R2cal) and Prediction (R2pred) and bias. The samples from the calibration (27) and prediction (9) sets were selected by the SPXy algorithm. In terms of the results obtained, for the determination of pH the three models obtained were with FF-iPLS. This was the only type of variable selection that worked for the determination of this property. Getting as values of RMSEC = 0.1330, R2cal = 0.7195, RMSEP = 0.2727, R2pred = 0.0242 (FF-iPLS raw data); RMSEC = 0.0204, R2cal = 0.1748, RMSEP = 0.1412, R2pred = 0.00862 (FF-iPLS SG21_1_1) and RMSEC =0.1909, R2cal = 0.3298, RMSEP = 0.1617, R2pred = 0, 0666 (SG21_2_2). For SST in terms of °brix, they had two suitable models and both used PLS, with values of RMSEC =0.5032, R2cal = 0.8159, RMSEP = 0.9322, R2pred = 0.9999 (model with SNV) and RMSEC =0.5043, R2cal = 0.8150, RMSEP = 0.9300, R2pred = 0.9999 (model with MSC). For acidity, only one model worked, and this one was also with FF-iPLS, having values of RMSEC =0.0072, R2cal = 0.3945, RMSEP = 0.0087, R2pred = 0.0167 (FF-iPLS with SG21_2_2). In this way, the models built with SNV and MSC pre-processing and with the FF-iPLS algorithm presented themselves as an interesting tool for predicting the physical-chemical properties of theft pulp, especially Spondias mombin. |
publishDate |
2022 |
dc.date.issued.fl_str_mv |
2022-09-19 |
dc.date.accessioned.fl_str_mv |
2023-04-17T22:16:30Z |
dc.date.available.fl_str_mv |
2999-12-31 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
GOMES, Mirelly Alexandre. Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis. 2022. 57f. Dissertação (Programa de Pós-Graduação em Química - PPGQ) - Universidade Estadual da Paraíba, Campina Grande, 2022. |
dc.identifier.uri.fl_str_mv |
http://tede.bc.uepb.edu.br/jspui/handle/tede/4554 |
identifier_str_mv |
GOMES, Mirelly Alexandre. Determinação dos parâmetros de qualidade da polpa da Spondias mombin utilizando espectroscopia de infravermelho próximo e algoritmo de seleção de variáveis. 2022. 57f. Dissertação (Programa de Pós-Graduação em Química - PPGQ) - Universidade Estadual da Paraíba, Campina Grande, 2022. |
url |
http://tede.bc.uepb.edu.br/jspui/handle/tede/4554 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.program.fl_str_mv |
-7931787842344471966 |
dc.relation.confidence.fl_str_mv |
600 600 600 |
dc.relation.department.fl_str_mv |
524871450381110278 |
dc.relation.cnpq.fl_str_mv |
1571700325303117195 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/embargoedAccess |
eu_rights_str_mv |
embargoedAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual da Paraíba |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Química - PPGQ |
dc.publisher.initials.fl_str_mv |
UEPB |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Pró-Reitoria de Pós-Graduação e Pesquisa - PRPGP |
publisher.none.fl_str_mv |
Universidade Estadual da Paraíba |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações da UEPB instname:Universidade Estadual da Paraíba (UEPB) instacron:UEPB |
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Universidade Estadual da Paraíba (UEPB) |
instacron_str |
UEPB |
institution |
UEPB |
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Biblioteca Digital de Teses e Dissertações da UEPB |
collection |
Biblioteca Digital de Teses e Dissertações da UEPB |
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http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4554/2/DS+-+Mirelly+Alexandre+Gomes http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4554/3/Termo+de+dep%C3%B3sito+BDTD http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4554/1/license.txt |
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Biblioteca Digital de Teses e Dissertações da UEPB - Universidade Estadual da Paraíba (UEPB) |
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bc@uepb.edu.br|| |
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