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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
181

Crescimento e propriedades da madeira de Copaifera langsdorffii Desf. sob regime de manejo florestal / Growth and wood properties of Copaifera langsdorffii Desf. under forest management regime

Carmo, Jair Figueiredo do 25 February 2016 (has links)
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-05-19T13:33:19Z No. of bitstreams: 1 2016 - Jair Figueiredo do Carmo.pdf: 2232723 bytes, checksum: fe83db2be94c1c93b2be3e9af0a35856 (MD5) / Made available in DSpace on 2017-05-19T13:33:19Z (GMT). No. of bitstreams: 1 2016 - Jair Figueiredo do Carmo.pdf: 2232723 bytes, checksum: fe83db2be94c1c93b2be3e9af0a35856 (MD5) Previous issue date: 2016-02-25 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The objective of this research was to study the growth and wood properties of Copaifera langsdorffii trees in an open rain forest, under a forest management system in the state of Mato Grosso, Brazil. Therefore, samples from 20 trees were collected, and the development of the research was divided into two stages. In the first one, a dendrochronological study for the species was carried out and in the second one, a study of the effect of forest management on the anatomical, chemical and physical properties of C. langsdorffii wood. The area where the trees were collected, has as main characteristic the fact that had occurred the first lumbering in 1987 and reaching his second cutting cycle in 2013. During the dendrochronological study, a master chronological series of the tree species and also an analysis of the cambium sensitivity to climatic variations (temperature and precipitation) were done. Furthermore, weather effects of El Ni?o event were found in the growth of those trees. The study of the effect of forest management on the properties of wood, was carried through the anatomical, physics and chemistry characterization of woods that were formed 10 years before and 10 years after the first cutting cycle that had occurred in 1987. It was also analyzed the effect of the distance of the trees studied in relation to the glade (remaining stub) opened in the year of the first lumbering, in 1987. The results indicated that C. langsdorffii has potential to the dendrochronological studies, presenting a significant correlation between the width of the rings within and among those trees. The forest management led to diametrical higher increases than those observed before the first lumbering. It was observed that the higher diametrical growth of trees occurred during periods of the year in which the precipitation rate is higher. The study indicated a significant change in anatomical structure of the wood, by the increased frequency of vessels and decreasing width of rays formed on wood after lumbering in1987. Those results were also observed for the trees distances in relation to the glade. The changes into anatomical structure showed a decrease in the density of the wood formed after 1987. By chemical analysis, 10 chemical elements were found, 4 macro and 6 micronutrients. There was no significant difference in the assimilation of minerals into the wood as a result of forest management. Thus, there was no negative effect on the availability of nutrients to the C langsdorffii. Overall the results showed that forest management was beneficial to the C. langsdorffii, growth because that action led to possible and considerable gains in growth after forest intervention, without incurring significant losses in the anatomical, physical and chemical structure in the wood species. / O objetivo deste trabalho foi estudar o crescimento e propriedades da madeira em ?rvores de Copaifera langsdorffii de uma floresta ombr?fila aberta, sob regime de manejo florestal, no estado de Mato Grosso. Para tanto, foram coletadas amostras de 20 ?rvores, e o desenvolvimento do trabalho foi dividido em duas etapas. Na primeira, foi realizado um estudo dendrocronol?gico para a esp?cie e, na segunda, um estudo do efeito do manejo florestal nas propriedades anat?micas, qu?micas e f?sica da madeira de C. langsdorffii. A ?rea, onde foram coletadas as ?rvores, tem como principal caracter?stica o fato de ter ocorrido a primeira explora??o florestal no ano de 1987 e atingindo seu segundo ciclo de corte no ano de 2013. No estudo dendrocronol?gico, foi constru?da uma s?rie cronol?gica mestre da esp?cie e an?lises da sensibilidade cambial ?s varia??es clim?ticas (temperatura e precipita??o). Al?m disso, verificou-se os efeitos clim?ticos do evento El Ni?o no crescimento das ?rvores. O estudo do efeito do manejo florestal nas propriedades da madeira foi realizado atrav?s da caracteriza??o anat?mica, f?sica e qu?mica dos lenhos formados10 anos antes e 10 anos depois do primeiro ciclo de corte ocorrido em 1987. Foi tamb?m analisado o efeito da dist?ncia das ?rvores estudadas em rela??o ? clareira (toco remanescente) aberta no ano da primeira explora??o de 1987. Os resultados obtidos indicaram que a C. langsdorffii apresenta potencial para estudos dendrocronol?gicos, apresentando uma correla??o significativa da largura dos an?is dentro e entre ?rvores. O manejo florestal propiciou incrementos diametrais superiores aos observados antes da primeira explora??o. Observou-se que os maiores incrementos diametrais das ?rvores ocorreram nos per?odos do ano em que o ?ndice de precipita??o ? maior. O estudo indicou altera??es significativas na estrutura anat?mica da madeira, atrav?s do aumento da frequ?ncia de vasos e redu??o largura dos raios na madeira formada ap?s a explora??o florestal de 1987. Esses resultados tamb?m foram encontrados na an?lise de dist?ncia da ?rvore estudas em rela??o ao toco remanescente. As altera??es na estrutura anat?mica denotaram uma diminui??o da densidade aparente da madeira formada p?s 1987. Atrav?s da an?lise qu?mica foram encontrados 10 elementos qu?micos, sendo 4 macros e 6 micronutrientes. N?o houve diferen?a significativa na assimila??o de minerais na madeira decorrentes do manejo florestal. Assim, n?o houve efeito negativo na disponibilidade de nutrientes para a C. langsdorffii. De modo geral, os resultados encontrados demonstraram que o manejo florestal foi ben?fico para a C. langsdorffii, pois possibilitou ganhos consider?veis de incremento ap?s a interven??o florestal, sem acarretar preju?zos relevantes na estrutura anat?mica, f?sica e qu?mica no lenho da esp?cie.
182

Avalia??o das complica??es p?s-operat?rias em cadelas submetidas ? ov?rio-histerectomia. / Evaluation of postoperative complications in bitches submitted to ovariohysterectomy.

Atallah, Fabiane Azeredo 16 January 2008 (has links)
Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-05-30T11:58:08Z No. of bitstreams: 1 2008 - Fabiane Azeredo Atallah.pdf: 2871575 bytes, checksum: e1634a7beeeaf1a05ff40e3641148f81 (MD5) / Made available in DSpace on 2017-05-30T11:58:08Z (GMT). No. of bitstreams: 1 2008 - Fabiane Azeredo Atallah.pdf: 2871575 bytes, checksum: e1634a7beeeaf1a05ff40e3641148f81 (MD5) Previous issue date: 2008-01-16 / This study aimed to evaluate the postoperative complications in 20 bitches previously submitted to ovariohysterectomy, correct these complications by surgery, and correlate the findings observed in preoperative diagnostic exams with those found during exploratory laparotomy. The animals were evaluated from the first day to the third month after consultation. Questionnaires were filled out by the owners. Bitches were submitted to clinical and laboratory exams, and ultrasound of the pelvic and abdominal regions. The most important complications observed were fistulas, ovarian and uterine stump granuloma, intestinal adherence, presence of ovarian remnants, hydronephrosis, and hydroureter. Two bitches died, and normal physiological functions were restored in all the other bitches. This study identified that mistakes that lead to these problems occur frequently during nonprofit reproductive control activities and in animal protection organizations as well as in private clinics, and are made not only by veterinary medicine students prematurely acting as veterinarians at the owners? homes, but also by veterinary medicine professionals. This study showed that mistakes made during ovariohysterectomy may cause several alterations in organs of the abdominal cavity that may lead to death. / Esse estudo teve o objetivo de avaliar as complica??es p?s-operat?rias em 20 cadelas anteriormente submetidas a ov?rio-histerectomia e corrigir cirurgicamente essas complica??es, bem como correlacionar as altera??es observadas nos exames diagn?sticos pr?-operat?rios com as observadas durante a laparotomia explorat?ria. Os animais foram avaliados desde o primeiro dia de atendimento at? o terceiro m?s. Foram aplicados question?rios aos propriet?rios e as cadelas foram submetidas a exames cl?nicos, laboratoriais e ultra-sonografia das regi?es p?lvica e abdominal. As complica??es mais importantes na p?s ov?rio-histerectomia observadas durante a laparotomia explorat?ria foram f?stulas, granuloma de coto ovariano e uterino, ader?ncias intestinais, ov?rio remanescente, hidronefrose e hidroureter. Duas cadelas vieram a ?bito e, em todas as outras se conseguiu restabelecer as fun??es fisiol?gicas. Essa pesquisa identificou que esses erros est?o sendo corriqueiramente cometidos, n?o s? em projetos de castra??o como em entidades protetoras de animais, mas tamb?m em cl?nicas particulares, por acad?micos de Medicina Veterin?ria que atuam precocemente em domic?lios e por profissionais da Medicina Veterin?ria. Esse estudo indicou que os diversos equ?vocos cometidos durante a realiza??o de uma ov?rio-histerectomia podem provocar severas altera??es em diversos sistemas da cavidade abdominal animal que podem at? culminar com o ?bito.
183

Estudo computacional da etapa fermentativa da produ??o de cerveja e proposta de uma estrat?gia de controle para o processo. / Selection of models and proposal of a control strategy for the fermentative stage of the beer production.

Carneiro, Diego Dias 05 March 2010 (has links)
Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-08-18T13:57:44Z No. of bitstreams: 1 2010 - Diego Dias Carneiro.pdf: 2540734 bytes, checksum: 49c9a669764fa3f9360256c27d7f24e7 (MD5) / Made available in DSpace on 2017-08-18T13:57:44Z (GMT). No. of bitstreams: 1 2010 - Diego Dias Carneiro.pdf: 2540734 bytes, checksum: 49c9a669764fa3f9360256c27d7f24e7 (MD5) Previous issue date: 2010-03-05 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil. / Beer is the oldest alcoholic beverage in the world, and its processing has been evolving along the time. Nowadays, beer trading occupies an important position in the economic market since it is the most consumed beverage in Brazil and around the world. Due to this economic significance, the search for more efficient processes that are able to keep the sensorial attributes to the final product represents a great interest for breweries. Fermentation is an important stage of the beer process since in this stage the products and by-products resulted from the yeast metabolism are formed. The detailed study of the fermentative stage of the beer production allows analyzing how the main process variables influence the fermentation and the way they interact each other. To reach this goal, mathematical modeling and computational simulation, were used in this work as a tool for studying the fermentative process. The goals of this study were: i) Select and reproduce through computational simulation, phenomenological models that describe the brewing process; ii) Investigate the effect of manipulate process variables (temperature, pressure and/or flows) over the dynamic behavior of the products and by-products of interest, and; iii) Propose a control strategy that be able to implement optimal temperature profiles in the beer fermentation process. A few dynamics mathematical models that describe the fermentation process were found in the literature. Based on the experimental validation and on the process variables considered, three phenomenological models were selected for the development of this work. It was observed that the manipulate process variables usually affect the dynamic of the fermentation temperature and, as a consequence, the dynamic of the other process variables. A simple control strategy, capable to heat up and refrigerate the fermentation vessel according to the process needs, was proposed in this work to better drive the fermentative process. The proposed control strategy shows very efficient, providing to the process operator facilities to the application of optimal temperature profiles in order to obtain a satisfactory fermentation and leading to a final product with appropriate sensorial attributes for the customer. / A cerveja ? a bebida alco?lica mais antiga do mundo e seu processamento vem evoluindo ao longo do tempo. Atualmente, a comercializa??o da cerveja ocupa uma posi??o de destaque no mercado econ?mico, pois ? a bebida alco?lica mais consumida no Brasil e no mundo. Devido a esta import?ncia econ?mica, a busca por processos mais eficientes e com capacidade de manter a qualidade sensorial do produto final ? de grande interesse para as cervejarias. A fermenta??o ? uma etapa importante do processo cervejeiro, pois ? nessa fase que se formam os produtos e sub-produtos do metabolismo das leveduras. O estudo detalhado sobre a etapa fermentativa da produ??o de cerveja permite analisar como as principais vari?veis de processo influenciam a fermenta??o e o modo como elas interagem. Para atingir esta meta, a modelagem matem?tica, aliada ? simula??o computacional, foi utilizada nessa disserta??o como ferramenta de estudo do processo fermentativo. Os objetivos desta disserta??o foram: i) Selecionar e reproduzir atrav?s de simula??o computacional modelos matem?ticos fenomenol?gicos da etapa de fermenta??o do processo de produ??o cervejeira; ii) Investigar o efeito das vari?veis manipul?veis de processo (temperatura, press?o e/ou vaz?es) sobre o comportamento din?mico dos produtos e subprodutos de interesse, e; iii) Propor uma estrat?gia de controle que seja capaz de implementar de modo eficiente perfis ?timos de temperatura no processo cervejeiro. Foram encontrados poucos modelos din?micos na literatura que representam a etapa fermentativa da produ??o da cerveja. Para o desenvolvimento dessa disserta??o foram utilizados tr?s modelos fenomenol?gicos escolhidos com base em sua valida??o experimental e nas vari?veis de processo consideradas. Observou-se que as vari?veis manipul?veis de processo normalmente influenciam a din?mica da temperatura da fermenta??o e, consequentemente, a din?mica das demais vari?veis do processo. Para a melhor condu??o do processo fermentativo uma estrat?gia de controle simples, capaz de aquecer e refrigerar o tanque de fermenta??o conforme a necessidade do processo, foi proposta nessa disserta??o. A estrat?gia de controle proposta se mostrou bastante eficiente, proporcionando ao operador a possibilidade da aplica??o de perfis ?timos de temperatura que proporcionem a condu??o satisfat?ria da fermenta??o cervejeira, levando a um produto final com os atributos sensoriais adequados para o consumidor.
184

Avalia??o da reabilita??o em ?reas de empr?stimo a partir de reflorestamentos na Mata Atl?ntica. / Evaluation of rehabilitation at reclamation sites from reforestations on Atlantic Forest.

Santos, Joana Farias dos 22 December 2010 (has links)
Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-08-18T14:34:19Z No. of bitstreams: 1 2010 - Joana Farias dos Santos.pdf: 22299426 bytes, checksum: 81d0ca2bff111fd3e0327131ba752062 (MD5) / Made available in DSpace on 2017-08-18T14:34:19Z (GMT). No. of bitstreams: 1 2010 - Joana Farias dos Santos.pdf: 22299426 bytes, checksum: 81d0ca2bff111fd3e0327131ba752062 (MD5) Previous issue date: 2010-12-22 / Programa de Capacita??o da Universidade do Estado da Bahia, PAC - UNEB, Brasil. / Reclaimed areas constitute ecosystems where soil and part of subsoil were suppressed. They show minimal resilience levels and need antropogenic interference for rehabilitation in the regional context. In this study it was evaluated 5 reforestations with different species and functional properties (treatments) after a lapse of 13-years. In chapter 1 it was evaluated the development, horizontal structure and floristic composition of shrubby-arboreal stratum. In chapter 2 understory spontaneous regeneration and in chapter 3 similarity of floristic composition between rehabilitation and a spontaneous restored area (~ 40 years old) were determined. At reforestation sites with five different groups of species, floristic composition increased from 12 to 23 species, distributed on 12 families and 276 individuals, where Fabaceae was the major family. For spontaneous regeneration 3.554 individuals were surveyed (1.438 on winter and 2.116 at summer) and the most representative families were Asteraceae and Poaceae. At the restoration site, it was observed 967 individuals from spontaneous regeneration, and the most representative families were Asteraceae and Sapindaceae, showing that there is low similarity between rehabilitation and restoration environments. All treatments displayed advances in the environmental sustainability, but two combinations of species had different performances in the rehabilitation of the reclaimed areas. / ?reas de empr?stimo constituem ecossistemas onde o solo e partes do subsolo foram suprimidas. Elas apresentam n?veis m?nimos de resili?ncia, necessitando de interven??es antr?picas para sua reabilita??o ao contexto regional. Neste estudo se avaliaram 5 reflorestamentos com esp?cies e propriedades funcionais diferentes (tratamentos), seus desempenhos e sustentabilidade ambiental depois de transcorridos 13 anos. No Cap?tulo I foram avaliados o desenvolvimento, a estrutura horizontal e a composi??o flor?stica do estrato arb?reo-arbustivo. No Cap?tulo II, a regenera??o espont?nea nos sub-bosques e no Cap?tulo III, a similaridade entre composi??es flor?sticas de ?reas em reabilita??o e em restaura??o espont?nea, com aproximadamente 40 anos. Nos reflorestamentos com 5 diferentes conjuntos de esp?cies, a composi??o flor?stica aumentou de 12 para 23 esp?cies, distribu?das em 12 fam?lias e 276 indiv?duos, sendo a Fabaceae a principal fam?lia. Foram encontrados 3.554 indiv?duos regenerantes (1.438 no inverno e 2.116 no ver?o) e as fam?lias bot?nicas mais representativas foram Asteraceae e Poaceae. Na ?rea em restaura??o, foram observados 967 indiv?duos regenerantes e as fam?lias Asteraceae e Sapindaceae tiveram maior representa??o, evidenciando que h? pequena similaridade entre esp?cies de ambientes em reabilita??o e restaura??o. Todos os tratamentos demonstraram avan?os na sustentabilidade ambiental, por?m duas combina??es de esp?cies se diferenciaram no desempenho da reabilita??o de ?reas de empr?stimo.
185

Esp?cies com voca??o para facilitar processos de restaura??o espont?nea de ecossistemas perturbados na vertente atl?ntica da Serra do Mar, Pira? ? RJ. / Survey of species destined to facilitate spontaneous processes of restoration of disturbed ecosystems in the Atlantic slope of the Serra do Mar, Pira? - RJ.

Bayl?o Junior, Hiram Feij? 07 June 2010 (has links)
Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-08-18T18:09:52Z No. of bitstreams: 1 2010 - Hiram Feij? Bay?o Junior.pdf: 2995539 bytes, checksum: c30780db47d43f18157697f751fc9127 (MD5) / Made available in DSpace on 2017-08-18T18:09:52Z (GMT). No. of bitstreams: 1 2010 - Hiram Feij? Bay?o Junior.pdf: 2995539 bytes, checksum: c30780db47d43f18157697f751fc9127 (MD5) Previous issue date: 2010-06-07 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil. / Disturbed Ecosystems present floristic composition changed, with a predominance of herbaceous vegetation, the soils are depleted, shallow, stony, with low infiltration and erosion presenting with different levels of Geodynamics. The individuals forest that colonized and settled in these environments, were considered rustic species. They were raised and their properties were evaluated in facilitating ecosystem evolved over 28 years, where the management was the restriction of pasture. The work was carried out in sections exposed to northern, local environmentally unfavorable of the watershed of Cacaria?s river, located in the Cacaria district, Pira? (S 22 ? 43'949''W and 43 ? 50'807''), located in the southern state of Rio de Janeiro. We found 14 rustic species in disturbed ecosystems, where only 4 survived to more advanced levels of the ecosystems (Tabernaemontana laeta, Sparattosperma leucanthum, Peltophorum dubium and Guarea guidonia), resulting in the same process of succession with 584 individuals and 43 species of 28 families in an area of 1.8 hectares, may constitute natural models of ecological restoration to be used in the Atlantic Forest. / Ecossistemas perturbados apresentam composi??o flor?stica alterada, com predom?nio de vegeta??o de porte herb?ceo, solos exauridos, rasos, pedregosos, com baixa infiltra??o e geodinamismos dos processos erosivos distintos. Os indiv?duos florestais que colonizam estes ambientes foram considerados esp?cies r?sticas. Eles foram levantados por censo em ?reas perturbadas e avaliadas os n?veis de coloniza??o espont?nea sob influencia das suas copas em ecossistema similar com 28 anos de restri??o ? pecu?ria. O estudo foi desenvolvido na vertente norte, local ambientalmente mais desfavor?vel por estar submetido a maiores perdas evapotranspirom?tricas da bacia hidrogr?fica do rio Cacaria, munic?pio de Pira? (S 22?43?949?? e W 43?50?807??), Rio de Janeiro. Foram encontrados 14 esp?cies r?sticas em ?reas perturbadas, onde apenas 4 subsistiram a n?veis mais evolu?dos do ecossistema (Tabernaemontana laeta, Sparattosperma leucanthum, Peltophorum dubium e Guarea guidonia), gerando sob as mesmas um processo de sucess?o com 584 indiv?duos e 43 esp?cies florestais, de 28 fam?lias em uma ?rea de 1,8 hectares. Estas informa??es podem ser essenciais ao desenvolvimento de modelos de restaura??o ecol?gica na Mata Atl?ntica.
186

Obesidade, desregula??o insul?nica e lipidemia mista em equinos da ra?a mangalarga marchador / Obesity, insulin deregulation and mixed lipidemia in horses of the mangalarga walker breed

Mello, Erica Bertha Fuhrich Raupp Bezerra de Mello 25 October 2016 (has links)
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-08-22T12:11:35Z No. of bitstreams: 1 2016 - Erica Bertha Fuhrich Raupp Bezerra de Mello.pdf: 1405623 bytes, checksum: 5fa531efb35b7236db276d4de4b56a2e (MD5) / Made available in DSpace on 2017-08-22T12:11:35Z (GMT). No. of bitstreams: 1 2016 - Erica Bertha Fuhrich Raupp Bezerra de Mello.pdf: 1405623 bytes, checksum: 5fa531efb35b7236db276d4de4b56a2e (MD5) Previous issue date: 2016-10-25 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Increased indicators of fat metabolism are found in Equine Metabolic Syndrome (EMS) subjects although these symptons are not included in the EMS definition described in the literature and in its diagnosis. 18 mares were allocated in three groups according to body condition status. In Group Ideal there were animals in fit condition (n=6), in Group Overweight, considered in overweight (n=6) and in Group Obese (n=6), animals considered obese. Fasting blood samples were taken to determine triglycerides, total cholesterol, glucose, and insulin concentrations in plasma. Insulin sensitivity proxy (RISQI) and ?-pancreatic secretion proxy (MIRG) were calculated from glucose and insulin data. There was a difference between groups in triglycerides levels (p<0.01), where Group Obese had significantly higher concentrations than other groups. Total cholesterol was higher in Group Obese compared to Group Ideal (p=0.01). No differences in plasma glucose (p=0.53) nor insulin (p = 0.10) concentrations and insulin sensitivity (RISQI: p=0.46) were seen among groups. Group Obese had a higher ?-pancreatic secretion (MIRG: p=0.05) compared to Group Ideal. The increased body condition score influenced the results of fat metabolites and ?-pancreatic secretion / O aumento das concentra??es de indicadores do metabolismo de gorduras ? bastante comum em casos diagnosticados de S?ndrome Metab?lica Equina (SME), mas apesar disto n?o entra no hall de fatores determinantes para diagn?stico da SME. Para avaliar a influ?ncia do escore corporal (EC) nas altera??es secund?rias associadas ? SME, foram avaliados lipidograma, glicemia, concentra??o de insulina, sensibilidade ? insulina (RISQI) e secre??o ?-pancre?tica de tr?s grupos de de ?guas Mangalarga Marchador n?o-getsantes/n?o-lactantes em tr?s diferentes categorias de EC (Ideal, Sobrepeso e Obeso). Cada grupo contou com 6 animais. Foram coletadas amostras de sangue em jejum de concentrado para a determina??o de concentra??o plasm?tica de triglicer?deos, colesterol total, glicose e insulina e a partir dos valores de glicemia e insulinemia foram calculados valores preditivos de sensibilidade ? insulina (RISQI) e secre??o ?-pancre?tica (MIRG). Houve diferen?a estat?stica entre os grupos quando avaliado os n?veis de triglicer?deos (p<0,01), sendo que o Grupo Obeso apesentou resultados significativamente superiores aos demais grupos. Foi observada diferen?a estat?stica entre os grupos quando avaliado as concentra??es de colesterol total (p=0,01), sendo que o Grupo Obeso apresentou resultados significativamente superiores ao Grupo Ideal. N?o foi observada diferen?a estat?stica entre os grupos nas concentra??es plasm?ticas de glicose (p=0,53) e insulina (p=0,10). N?o foi observada diferen?a estat?stica nos valores obtidos de RISQI (p=0,46), mas houve diferen?a estat?stica entre os grupos nos valores obtidos de MIRG (p=0,05), sendo que o Grupo Obeso obteve resultados significativamente superiores quando comparado com o Grupo Ideal. O escore corporal influenciou de forma positiva nos resultados do lipidograma e valor preditivo de secre??o ?-pancre?tica, sendo encontrados maiores n?veis em animais obesos.
187

Impacto da IATF na esta??o de monta de f?meas Nelores (Bos taurus indicus) com a utiliza??o da eCG considerando o ECC e o padr?o de ciclicidade ap?s triagem ginecol?gica / Impact of timed artificial insemination on breeding season of Nellore females (Bos taurus indicus) with eCG considering the body condition score and the cyclicity after gynecological screening

Ferreira, Joaquim Esquerdo 22 June 2016 (has links)
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-08-24T11:18:26Z No. of bitstreams: 1 2016 - Joaquim Esquerdo Ferreira.pdf: 985948 bytes, checksum: c74866a4845a971211c74ba0d1a5b391 (MD5) / Made available in DSpace on 2017-08-24T11:18:26Z (GMT). No. of bitstreams: 1 2016 - Joaquim Esquerdo Ferreira.pdf: 985948 bytes, checksum: c74866a4845a971211c74ba0d1a5b391 (MD5) Previous issue date: 2016-06-22 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The gynecological screening prior to TAI can be considered as a non-invasive technique, relatively simple, safe for the technician and for the animal, and provides quick and extremely important information for the best use of various hormones on the market for use in synchronization protocols of ovulation in cattle. It is important to emphasize the need for gynecological examination before the start of a hormonal protocol because of the risk of causing an abortion or embryonic loss due to prostaglandin that at some point should be administered during the protocol. Additionally, there is the option to choose which the most appropriate hormones to be used in the program, directing the protocols based to animal ovarian physiological status. This screening allows good results enabling the best use of this biotech, making the use of this biotech does not become a cake recipe, i.e. it is not used incorrectly and indiscriminately without criteria. To this end, it has been based on the pattern of cyclicity of the ovaries (presence of corpus luteum, mature follicles or absence of these structures), to increase conception and pregnancy rates by adjusting the protocol to ovarian function. Moreover, we must take into account the ovarian function and also an assessment of body condition score (BCS), along with age and lactation period of the animals before starting the TAI protocol. In this sense, it is very important the knowledge of the technician who will perform synchronization program of estrus and ovulation in bovine females. So that you can successfully execute gynecological and clinical examination of females to be submitted to this treatment. The application of a gynecological screening and carried out by a qualified technician in order to optimize the use of TAI protocols is essential, resulting in cheaper protocols with satisfactory results, in order to make solid and reliable technique / A realiza??o da triagem ginecol?gica previamente ? IATF apresenta-se como uma t?cnica n?o invasiva, relativamente simples, segura para o t?cnico e para o animal, e fornece informa??es r?pidas e extremamente importantes para o melhor uso dos diversos horm?nios dispon?veis no mercado para serem utilizados nos protocolos de sincroniza??o da ovula??o em bovinos. ? importante ressaltar a necessidade do exame ginecol?gico antes do in?cio de um protocolo hormonal devido ao risco de causar abortamento ou mesmo perda embrion?ria em fun??o da prostaglandina e o estradiol que em algum momento dever? ser administrada no decorrer do protocolo. Adicionalmente, tem se a op??o de escolher quais os horm?nios mais apropriados que ser?o utilizados no programa, direcionando os protocolos em fun??o do status fisiol?gico ovariano que o animal se encontra. Essa triagem permite bons resultados viabilizando o melhor emprego desta biot?cnica, evitando o uso da mesma de forma errada e indiscriminada, sem crit?rios. Para tal, basea-se no padr?o de ciclicidade dos ov?rios (presen?a de corpo l?teo, fol?culos maduros ou ainda aus?ncia destas estruturas), para incrementar as taxas de concep??o e de prenhez, ao ajustar o protocolo ? fun??o ovariana. Al?m de levar-se em considera??o a fun??o ovariana, preconiza-se tamb?m uma avalia??o do escore de condi??o corporal (ECC), juntamente com a idade e per?odo lactacional dos animais antes de se iniciar o protocolo. Nesse sentido, torna-se de suma import?ncia o conhecimento do t?cnico que ir? realizar um programa de sincroniza??o do estro e da ovula??o em f?meas bovinas, de maneira que o mesmo consiga executar com sucesso o exame ginecol?gico e cl?nico das f?meas que ser?o submetidas a esse tratamento. ? imprescind?vel a aplica??o de uma triagem ginecol?gica bem realizada por um t?cnico qualificado de maneira a otimizar a utiliza??o dos protocolos de IATF, resultando em protocolos de menor custos e com resultados satisfat?rios, com intuito de tornar a t?cnica vi?vel economicamente e ainda com a previs?o de resultados confi?veis para os produtores
188

Viabilidade da produ??o de leite em sistema org?nico e desempenho comparativo com sistemas convencionais usando benchmarking / Viability of organic milk production and comparative performance with conventional systems using benchmarking

Holmstr?m, Th?r?sse Camille Nascimento 26 July 2016 (has links)
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-09-11T11:16:38Z No. of bitstreams: 1 2016 - Th?r?sse Camille Nascimento Holmstr?m.pdf: 1094101 bytes, checksum: a6473fdeeb8988cb28568635f529a54f (MD5) / Made available in DSpace on 2017-09-11T11:16:38Z (GMT). No. of bitstreams: 1 2016 - Th?r?sse Camille Nascimento Holmstr?m.pdf: 1094101 bytes, checksum: a6473fdeeb8988cb28568635f529a54f (MD5) Previous issue date: 2016-07-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / This study was developed in order to benchmark the performance between organic and conventional milk properties. For this, we analyzed values of livestock and economic performance of organic dairy farm in the state of S?o Paulo with values collected from a database of an industry that had 3259 dairy farms in the same region of the organic property. Data were compared using a benchmark tool. The independent variables identified in all the properties were size in hectares of effective area for milk production, number of lactating cows in the herd and daily milk production. The dependent variables were the zootechnical and economic performances featured in each property. The results of the zootechnical performance of organic property which has 25 hectares area for effective production of milk, dairy cows were 53,60, 2,14 cows per hectare, 1220 liters of daily milk production, 48,80 liter production of milk per area, 83,90% of lactating cows and 22,76 liters of milk per cow in milk, showing better results than conventional properties with similarity in the independent variables. Already the results for the economic margins of organic property were R$ 0,20 and R$ 89,060.00 for gross margins for daily and annual liter, respectively, R$ 0,21, R$ 93,513.00 and R$ 10,47 for banks net per liter per year per hectare, respectively. The economic results of organic property were R$1,00 average cost per liter of milk, -R$ 0,34 return on invested capital, R$ 1,15 Total revenue per liter of milk, R$ 191,989.14 and R$ 639,96 for cash flow in real and actual per hectare per month, respectively. The organic property does not sell milk in its natural form but in derivatives, which have added value and sales value higher than the milk based on CEPEA, which was the analysis parameter. This work also examined the cholesterol and fatty acids in organic milk property, with the results 9.64 ? 0,31mg / 100g cholesterol and the concentration of higher fatty acids in organic milk was palmitic (C16: 0) followed by elaidic (C18: 1 cis 9w9) and stearic (C18: 0). The results of the content of fatty acids in organic milk were 67.06 ? 0.93 mg/100 g for saturated fatty acids (SFA), 26.15 ? 1.10 mg/100g for monounsaturated fatty acids (MUFA) and 2.14 ? 0,15 mg /100g for polyunsaturated fatty acid (PUFA) on a dry matter basis. The values of the quantities of fatty acids represented by ?3 and ?6 were higher in organic milk 0.38 ? 0.04 mg/100h and 2.67 ? 0,41 mg/100 g, respectively. However, the ratio of omega was ?3 / ?6 was 0.19 and ?6/?3 was 22.97. The values of the ratios between the linoleic and linolenic fatty acids were C18: 2 ?6 cis/C18: 3 ?3 were 1.59 and C18: 3 ?3 / C18: 2 cis ?6 was 0.63. It was concluded that, from a technical and economic point of view, the organic system can have values of growth performance and economic compatible or even superior to conventional systems, whatever comparison or benchmark indicators employees. Given the above, it can be concluded that the production of milk in the organic model is sustainable, both from a technical and economic point of view. / O presente trabalho foi desenvolvido com o objetivo de avaliar comparativamente o desempenho entre propriedades de leite org?nica e convencionais. Para isso, foi analisado valores de desempenho zoot?cnico e econ?mico de uma fazenda de leite org?nico localizada no estado de S?o Paulo com valores coletados de um banco de dados de uma ind?stria que possu?a 3259 propriedades leiteiras na mesma regi?o da propriedade org?nica. Os dados foram comparados utilizando a ferramenta benchmark. As vari?veis independentes identificadas em todas as propriedades foram tamanho em hectare da ?rea efetiva destinada ? produ??o leiteira, n?mero de vacas lactantes do rebanho e produ??o leiteira di?ria. As vari?veis dependentes foram os desempenhos zoot?cnicos e econ?micos caracterizados em cada propriedade. Os resultados dos desempenhos zoot?cnicos da propriedade org?nica, que possui 25 hectares de ?rea para produ??o efetiva de leite, foram 53,60 vacas em lacta??o, 2,14 vacas por hectare, 1220 litros de produ??o di?ria de leite, 48,80 litros de produ??o de leite por ?rea, 83,90% de vacas em lacta??o e 22,76 litros de leite por vaca em lacta??o, mostrando resultados superiores aos das propriedades convencionais com similaridade nas vari?veis independentes. J? os resultados para as margens econ?micas da propriedade org?nica foram R$ 0,20 e R$ 89.060,00 para margens bruta por litro di?rio e anual, respectivamente, -R$ 0,21, -R$ 93.513,00 e -R$ 10,47 para margens l?quidas por litro, por ano e por hectare, respectivamente. Os resultados econ?micos da propriedade org?nica foram R$ 1,00 de custo m?dio por litro de leite, -R$ 0,34 de retorno sobre capital investido, R$ 1,15 de receita total por litro de leite, -R$ 191.989,14 e -R$ 639,96 para fluxo de caixa em reais e em reais por hectare por m?s, respectivamente. A propriedade org?nica n?o comercializa leite em sua forma natural e sim em derivados, que possuem valor agregado e valores de venda superiores ao do leite com base no CEPEA, o qual foi o par?metro de an?lise. Neste trabalho tamb?m foi analisado o colesterol e ?cidos graxos presentes no leite da propriedade org?nica, tendo como resultados 9,64 ? 0,31mg/100g de colesterol e a concentra??o de maior ?cido graxo no leite org?nico foi de palm?tico (C16:0), seguido pelo ela?dico (C18:1 cis 9 ? 9) e este?rico (C18:0). Os resultados do conte?do dos ?cidos graxos em leite org?nico foram 67,06 ? 0,93 mg/100g para ?cidos graxos saturados (AGS), 26,15 ? 1,10mg/100g para ?cidos graxos monoinsaturados (AGMI) e 2,14 ? 0,15mg/100g para ?cido graxo poliinsaturado (AGPI) em base de mat?ria ?mida. Os valores das quantidades dos ?cidos graxos representados pelos ?3 e ?6 foram altos no leite org?nico 0,38 ? 0,04mg/100g e 2,67 ? 0,41mg/100g, respectivamente. No entanto, a raz?o entre os ?megas foi ?3/?6 foi 0,19 e ?6/?3 foi de 22,97. Os valores entre as raz?es entre os ?cidos graxos linoleico e linol?nico foram C18:2 ?6 cis / C18:3 ?3 foram 1,59 e C18:3 ?3 / C18:2 ?6 cis foram de 0,63. ? poss?vel concluir que, do ponto de vista t?cnico e econ?mico, o sistema org?nico pode ter valores de desempenho zoot?cnico e econ?micos compat?veis ou at? superiores aos sistemas convencionais, quaisquer que sejam os indicadores de compara??o ou benchmark empregados. Diante do exposto, pode-se concluir que a produ??o de leite no modelo org?nico ? sustent?vel, tanto do ponto de vista t?cnico quanto econ?mico
189

Din?mica da vegeta??o atrav?s do ?ndice EVI e sua rela??o com vari?veis meteorol?gicas / Vegetation dynamics through the EVI index and its relation with meteorological variables

Cruz, Camila Caetano da 15 February 2017 (has links)
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-09-15T12:49:01Z No. of bitstreams: 1 2017 - Camila Caetano da Cruz.pdf: 2972481 bytes, checksum: 198acc8d9a70ab72c6437d4e52f11dd8 (MD5) / Made available in DSpace on 2017-09-15T12:49:01Z (GMT). No. of bitstreams: 1 2017 - Camila Caetano da Cruz.pdf: 2972481 bytes, checksum: 198acc8d9a70ab72c6437d4e52f11dd8 (MD5) Previous issue date: 2017-02-15 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The Atlantic Forest biome is a biogeographic region with high biodiversity, containing several natural reserves that generate essential resources for all living beings. With its high degree of deforestation over the years due to anthropogenic action, it is necessary to identify and monitor changes in land use and cover, which enables a better understanding of the future of forests and how their changes are occurring. This work aims to evaluate the vegetation dynamics in the Atlantic Forest biome through the Enhanced Vegetation Index (EVI) and its relation with the meteorological variables: average air temperature, rainfall, global solar radiation, relative humidity and evapotranspiration. The study was carried out in the municipality of Pinheiral in the State of Rio de Janeiro. The vegetation data of the product MOD13Q1, from 2001 to 2013, totaling 299 images and monthly data of the meteorological variables of the same period, totaling 780 data, were used. The analyzes of the interannual trends of the time series of vegetation indices were performed using the methodologies of linearity, linear correlation, linear trend, monotonic tendency of Mann Kendall, median trend of Theil-Sen and analysis of temporal profiles as well as trend analysis seasonal. The correlation between the meteorological data and the vegetation index was studied through the multiple linear regression, expressed by the regression coefficient and the coefficient of determination (R?) estimates. Therefore, a land use analysis was carried out in the same study period, from 2001, 2006 and 2013 through classifiers generated for each pixel value of the image. With the generation of temporal profiles of vegetation indices, it was observed that there was a decrease in vegetative vigor, this result was in line with the interannual trends studied, which indicated a decrease in vegetation values for both the monotonic tendency of Mann Kendall and Median trend with values close to 0 and negative, being a non-linear behavior according to the methodologies of linear correlation, linearity and linear trend. According to the Seasonal Trend Analysis, EVI did not present a cycle pattern, with a mixture of cycles, annual and semi-annual. In relation to the correlation of the vegetation indices with the meteorological variables, correlation values were found that reached 0.97 for the R?. Thus, there is a high explanation of the dynamics of the landscape through these climatic variables. The landscape EVI for the Atlantic Forest Biome behaves seasonally and depending on the environmental conditions of the region / O bioma Mata Atl?ntica ? uma regi?o biogeogr?fica com alta biodiversidade, contendo diversas reservas naturais que geram recursos indispens?veis para todos os seres vivos. Com o seu alto grau de desmatamento ao longo dos anos devido a a??o antr?pica, faz-se necess?rio a identifica??o e o monitoramento das mudan?as do uso e cobertura do solo o que possibilita a melhor compreens?o do futuro das florestas e como est?o ocorrendo as suas mudan?as. Com isso, esse trabalho tem o objetivo de avaliar a din?mica da vegeta??o no bioma Mata Atl?ntica atrav?s do ?ndice de Vegeta??o Melhorado (EVI) e qual a sua rela??o com as vari?veis meteorol?gicas: temperatura m?dia do ar, chuva, radia??o solar global, umidade relativa do ar e evapotranspira??o. O trabalho foi realizado no munic?pio de Pinheiral no Estado do Rio de Janeiro. Foram utilizados os dados de vegeta??o do produto MOD13Q1, no per?odo de 2001 a 2013, totalizando 299 imagens e dados mensais das vari?veis meteorol?gicas, do mesmo per?odo, totalizando 780 dados. As an?lises das tend?ncias interanuais das s?ries temporais de ?ndices de vegeta??o foram realizadas por meio das metodologias de linearidade, correla??o linear, tend?ncia linear, tend?ncia monot?nica de Mann Kendall, tend?ncia mediana de Theil-Sen e an?lise dos perfis temporais e tamb?m a an?lise de tend?ncia sazonal. Atrav?s da regress?o linear m?ltipla, expressas pelas estimativas dos coeficientes da regress?o e do coeficiente de determina??o (R2) foi estudada a correla??o entre os dados meteorol?gicos e o ?ndice de vegeta??o. Diante disso, foi realizado uma an?lise de uso do solo no mesmo per?odo de estudo, de 2001, 2006 e 2013 atrav?s de classificadores gerados para cada valor do pixel da imagem. Com a gera??o dos perfis temporais dos ?ndices de vegeta??o, observou-se que houve uma diminui??o no vigor vegetativo, esse resultado foi de encontro ?s tend?ncias interanuais estudadas, que indicaram decr?scimo nos valores da vegeta??o tanto para a tend?ncia monot?nica de Mann Kendall como para a tend?ncia mediana com valores pr?ximos de 0 e negativos, sendo um comportamento n?o linear de acordo com as metodologias de correla??o linear, linearidade e tend?ncia linear. De acordo com a An?lise de Tend?ncia Sazonal, o EVI n?o apresentou um padr?o de ciclo, ocorrendo uma mistura de ciclos, anual e semi-anual. Em rela??o a correla??o dos ?ndices de vegeta??o com as vari?veis meteorol?gicas, foram encontrados valores de correla??o que chegaram a 0,97 para o R?. Dessa forma, verifica-se uma alta explica??o da din?mica da paisagem atrav?s dessas vari?veis clim?ticas. O EVI da paisagem para o Bioma Mata Atl?ntica se comporta de forma sazonal e em fun??o das condi??es ambientais da regi?o
190

Pesticidas Organoclorados (OCPs) em peixes comerciais capturados na Ba?a de Guanabara do Estado do Rio de Janeiro, Brasil / Organochlorine Pesticides (OCPs) in commercial fish from Guanabara Bay of Rio de Janeiro State, Brazil

FERREIRA, Verona Borges 21 February 2017 (has links)
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-09-18T13:59:23Z No. of bitstreams: 1 2017 - Verona Borges Ferreira.pdf: 1252759 bytes, checksum: 291a4f24b8d135e118f8e80afed31cfd (MD5) / Made available in DSpace on 2017-09-18T13:59:23Z (GMT). No. of bitstreams: 1 2017 - Verona Borges Ferreira.pdf: 1252759 bytes, checksum: 291a4f24b8d135e118f8e80afed31cfd (MD5) Previous issue date: 2017-02-21 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Brazil is among the world?s largest fish producers, and the state of Rio de Janeiro is one of the main responsible for this production. In addition, there is a substantial increase in fish consumption which is associated to its functional and nutritional properties, such as its lipid profile. Today the hydrographic bays of Rio de Janeiro suffer the impacts of excessive use of toxic substances, such as Organoclorine Pesticides (OCPs), which has a characteristic lipophilicity and tend to accumulate in adipose tissue of organisms. As a consequence, this may pose risk to consumers of fish from polluted environments. The human exposure to these pollutants is highly related to health problems, such as cancer, immunity diseases and endocrine disruptions. Thus, the present study aims at investigating the occurence of OCPs in sardine (Sardinella brasiliensis), whitemouth croaker (Micropogonias furnieri) and mullet (Mugil liza) from Guanabara Bay, located in the state of Rio de Janeiro, and also to estimate the OCPs intake through fish consumption. The analyses were carried out at the Laboratory of de Radioisotopes Eduardo Penna Franca at UFRJ. The analitical steps included sohxlet extration, purification and subsequent injection in a Gas Chromatography system coupled to a Mass Spectrometer on Negative Chemical Ionization mode (GC/MS/ENCI) to determine the OCPs concentrations. The estimative of the toxic compound intake was performed based on the obtained data for OCP in fish samples, the fish intake of the brazilian population, andavailable data of Acceptable Daily Intake (ADI) for each investigated pesticide. All samples had at least one OCP. Metoxichlor had the highest concentration for the three studied species. There was significant difference between the species concerning the concentration of o,p?-DDD and o,p?-DDT. These DDT metabolites were found at higher concentration in sardine samples in comparison to croaker and mullet ones. However, there was no significant difference between the species in relation to ?OCP. It was evidenced the greater proportion of DDE among the DDT metabolites which suggests the past use of this pesticide. Results for ?-HCH isomer indicate the contamination by the use of Lindane instead of the technical HCH mixture. There was no significant difference among the contamination of the three studied species in regard to sample's acquisition locations, showing that the locality does not influence the content of OCPs in fish, probably due the species behavior which travel big distances along the brazilian coast throughout their life cycle. No sample exceeded the maximum residue limit stipulated for OCPs at both national or international level. Based on the estimated intake data no species exceeded the toxicological safety parameter. Thus, the three studied fish species can be considered safe for human consumptiom in regard to OCPs exposure / O Brasil est? entre os maiores produtores mundiais de pescado, sendo o estado do Rio de Janeiro um dos principais respons?veis por essa produ??o. Al?m disso, existe um aumento substancial do consumo de peixes, que est? associado ? suas propriedades nutricionais e funcionais, como o seu excelente perfil lip?dico. As bacias hidrogr?ficas do Rio de Janeiro sofrem hoje os impactos do uso excessivo de subst?ncias t?xicas, como os Pesticidas Organoclorados (OCPs), que devido ? caracter?stica lipof?lica, tendem a se acumular no tecido adiposo de organismos aqu?ticos, o que pode representar um risco a sa?de de quem consome pescado oriundos de ambientes contaminados. Por sua vez, a exposi??o humana a estes poluentes est? altamente relacionada a problemas de sa?de, tais como o surgimento de c?ncer, problemas de imunidade e interfer?ncias end?crinas. Desta forma, o presente estudo tem por objetivo investigar a ocorr?ncia de OCPs em amostras de sardinha-verdadeira (Sardinella brasiliensis), corvina (Micropogonias furnieri) e tainha (Mugil liza) capturados na Ba?a de Guanabara, localizada no estado do Rio de Janeiro, assim como estimar a ingest?o de OCPs por meio do consumo de pescado. As an?lises foram realizadas no Laborat?rio de Radiois?topos Eduardo Penna Franca da UFRJ, atrav?s de sua extra??o, purifica??o e posterior inje??o em um sistema de Cromatografia Gasosa acoplada a um Espectr?metro de Massa por ioniza??o qu?mica negativa (CG/EM/NCI) para determinar as concentra??es de OCPs. Para estimar a ingest?o desses compostos t?xicos foram utilizados os dados de contamina??o das amostras, consumo do pescado pela popula??o brasileira, assim como os dados de Ingest?o Di?ria Aceit?vel (IDA) para cada contaminante. Todas as amostras investigadas estavam contaminadas com pelo menos um OCP, o Metoxicloro foi o pesticida encontrado em maior concentra??o nas tr?s esp?cies estudadas e houve diferen?a significativa entre as esp?cies em rela??o a concentra??o de o,p?-DDD e o,p?-DDT, estes metab?litos do DDT foram encontrados em maior concentra??o nas amostras de sardinha-verdadeira em rela??o as amostras de corvina e tainha, entretanto n?o houve diferen?a significativa entre as esp?cies em rela??o ao ?OCP. Ficou evidenciada a maior propor??o do DDE entre os metab?litos de DDT, n?o sugerindo o uso recente deste pesticida, e do is?mero ?-HCH entre os demais is?meros de HCH, evidenciando a contamina??o pelo uso de Lindano em rela??o ao HCH t?cnico. N?o houve diferen?a significativa entre a contamina??o das tr?s esp?cies com base nos diferentes pontos de coleta, demonstrando que a localidade de aquisi??o do pescado n?o influenciou no teor dessas subst?ncias, uma vez que estas esp?cies ao longo de seu ciclo de vida percorrem grandes dist?ncias pela costa brasileira. Nenhuma amostra excedeu os limites m?ximos de res?duo estipulados para esses contaminantes tanto a n?vel de regulamenta??o nacional quanto internacional. Com base nos dados de estimativa de ingest?o nenhuma esp?cie excedeu o par?metro toxicol?gico de seguran?a, sendo assim, as tr?s esp?cies estudadas s?o consideradas seguras para o consumo humano em rela??o a exposi??o a OCPs

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