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

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

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-10-13T12:25:06Z No. of bitstreams: 1 2016 - Pedro Antonio Pa??.pdf: 2520523 bytes, checksum: dbda485ebbcb8e6720ce729890cb05ad (MD5) / Made available in DSpace on 2017-10-13T12:25:06Z (GMT). No. of bitstreams: 1 2016 - Pedro Antonio Pa??.pdf: 2520523 bytes, checksum: dbda485ebbcb8e6720ce729890cb05ad (MD5) Previous issue date: 2016-03-04 / This study aimed to evaluate the performance of a succession of corn and bean, submitted to organic management associated with green manure from a mixture of species with different spatial arrangements. The experiment was conducted in the Sistema Integrado de Produ??o Agroecol?gica - SIPA, located in Serop?dica - RJ, Brazil. The statistical design was a completely randomized blocks with six treatments and four replicates, totaling twenty four plots. In this sense, the experiment was planned in two parts, the first part was the study of spatial arrangements of planting, consisting in a mixture (Canavalia ensiformis, Crotalaria juncea and Helianthus annuus) of cover crops species (ECS) for green manure contemplating: intercropping with corn (cv. Caatingueiro) in double rows. The treatments consisted : ECS haul sowing; ECS furrow sowing; ECS haul sowing in a intercropping with corn; ECS furrow sowing in a intercropping with corn; corn monoculture; fallow (control). The evaluated parameters were: cover soil provided by ECS; fresh and dry biomass productivity; chemical composition of ECS aerial part; and corn grains productivity. The second part of the experiment took place in the same area, and bean (cv. Constanza) was planted in the same plots of the first part of the experiment. It was evaluated the influence of cover crops species on weed reinfestation and on the productivity of beans. As a general conclusion it was observed that the ECS covered the soil faster than the current spontaneous vegetation on fallow did. The fresh and dry biomass productivity and the cumulative quantity of nutrients in the biomass of the treatments that took in the ECS were higher than in corn monoculture. It was noted that the presence of the ECS influenced positively on weed reinfestation control. The corn grains productivity was lower when intercropping with ECS, however, the yield of beans was not influenced. The sowing way, haul or furrow, showed no differences, one interesting finding because the smallholder have freedom to choice the sowing way, without concern with related losses. / O presente estudo teve como objetivo avaliar o desempenho produtivo de uma sucess?o envolvendo milho e feijoeiro, submetidos ao manejo org?nico, associada ? aduba??o verde formada de uma mistura de esp?cies com diferentes arranjos espaciais. O experimento foi conduzido no Sistema Integrado de Produ??o Agroecol?gica ? SIPA (UFRRJ/Embrapa Agrobiologia/PESAGRO-RIO), localizado no munic?pio de Serop?dica, regi?o da Baixada Fluminense, RJ. O delineamento estat?stico adotado foi o de blocos casualizados, com seis tratamentos e quatro repeti??es, totalizando vinte e quatro parcelas. Neste sentido, o experimento foi planejado em duas partes, onde a primeira foi o estudo de arranjos espaciais de plantio composta por uma mistura de esp?cies (Canavalia ensiformis, Crotalaria juncea e Helianthus annuus) de plantas de cobertura do solo (ECS) para aduba??o verde, contemplando cultivos consorciados com o milho (variedade Caatingueiro) em fileiras duplas. Os tratamentos constaram de: ECS semeadas a lan?o; ECS semeadas em sulcos; ECS semeadas a lan?o em cons?rcio com o milho; ECS semeadas em sulcos em cons?rcio com o milho; monocultivo de milho; pousio (controle). Avaliou-se a cobertura do solo proporcionada pelas ECS; produtividade de biomassa fresca e seca; composi??o qu?mica da parte a?rea das esp?cies de cobertura do solo; e a produtividade de gr?os de milho. Na segunda parte do trabalho, na mesma ?rea em sucess?o, cultivou-se o feijoeiro (cv. Constanza) nas parcelas empregadas na primeira parte. Avaliou-se a influ?ncia das esp?cies de cobertura do solo na reinfesta??o de esp?cies espont?neas e a produtividade de gr?os de feij?o. Como conclus?o geral, observou-se que as ECS cobriram com maior velocidade o terreno do que a vegeta??o espont?nea presente no sistema em pousio. As produtividades de biomassa fresca e seca da parte a?rea e a quantidade acumulada de nutrientes na biomassa a?rea dos tratamentos que continham as ECS foram maiores do que no monocultivo do milho. Notou-se que a presen?a das ECS influenciou positivamente no controle da reinfesta??o das esp?cies espont?neas. A produtividade de gr?os de milho foi menor quando consorciado com as ECS, no entanto, a produtividade de gr?os de feij?o n?o foi influenciada. O modo de semeadura, a lan?o ou em sulcos, n?o demonstrou diferen?as nas avalia??es realizadas, sendo um dado interessante pelo fato do agricultor, dessa maneira, ter livre escolha quanto ao modo de semeadura, sem ter a preocupa??o de preju?zos correlacionados

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-10-16T12:49:06Z No. of bitstreams: 1 2016 - Jos? Henrique Camargo Pace.pdf: 2091527 bytes, checksum: ecdf1580f5a32680699ae7f0489c44fb (MD5) / Made available in DSpace on 2017-10-16T12:49:06Z (GMT). No. of bitstreams: 1 2016 - Jos? Henrique Camargo Pace.pdf: 2091527 bytes, checksum: ecdf1580f5a32680699ae7f0489c44fb (MD5) Previous issue date: 2016-02-24 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The aim of this study was to evaluate the effect of steaming and impregnation of nano silver particle, the drying rate of Eucalyptus pellita. The effect of the treatments was evaluated on wood in three different radial regions (inward heartwood (CIN), Intermediate heartwood (CIT) and external (TCA)). Two steaming time (12 and 24h) and soaking the wood in nanoparticle solution silver with or without application of vacuum were investigated. The effect of these treatments were assessed using the anatomical analysis (area and vessel diameter), chemical (content of extractives) and physical (density and permeability to gas) of the timber. The drying process was carried out in a climatized room with a temperature of 20 ? C ? 2 and relative humidity 65% ? 5. The analysis rate of drying was targets in humidity levels before and after the fiber saturation point (FSP). The results show that the treatments did not affect the density and area and vessel diameter. The vaporization for 24 h caused a decrease in the extractives content and an increase in permeability to gas within and between three radial regions of the wood. This results contributed to that gains in drying rate before and after the FSP were obtained. In general, the impregnating silver nanoparticles in the timber, through the two immersion methods have not yielded significant results in drying rate, except when combined with the prior application of steam (24 hours) and vacuum in the outer radial region / O objetivo desse estudo foi avaliar o efeito da vaporiza??o e da impregna??o de nano part?culas de prata nas vari?veis do processo de secagem da madeira de E. pellita. O efeito dos tratamentos foi avaliado na madeira de tr?s distintas regi?es radiais (Cerne Interno (CIN), Cerne Intermedi?rio (CIT) e Externa (TCA). Dois tempos de vaporiza??o (12 e 24 hs) e imers?o da madeira em solu??o de nanopart?culas de prata com e sem aplica??o pr?via de v?cuo foram estudados. O efeito desses tratamentos foram avaliados atrav?s de an?lises anat?micas (?rea e di?metro de vaso), qu?micas (teor de extrativos totais) e f?sicas (densidade e permeabilidade a g?s) da madeira. O processo de secagem se deu em ambiente climatizado com temperaturas de 20?C ?2 e umidades relativas de 65%?5. A an?lise da taxa de secagem foi realizada em faixas de umidade antes e depois do ponto de satura??o das fibras (PSF). Os resultados mostram que os tratamentos n?o afetaram a densidade e a ?rea e di?metro dos vasos. A vaporiza??o por 24 h promoveu um decr?scimo no teor de extrativos e um aumento na permeabilidade ? g?s dentro e entre as tr?s regi?es radiais da madeira. Esse resultados contribuiu para que ganhos na taxa de secagem antes e depois do PSF fossem obtidos. Em geral a impregna??o de nanopart?culas de prata na madeira, atrav?s dos dois m?todos de imers?o, n?o produziram resultados significativos na taxa de secagem, exceto quando combinada com a aplica??o pr?via de vapor (24 hs) e v?cuo na regi?o radial mais externa

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-10-17T17:21:36Z No. of bitstreams: 1 2016 - Eduardo Lima de Sousa.pdf: 1396561 bytes, checksum: e5e6a638d3487649bffde6f8de4a6de6 (MD5) / Made available in DSpace on 2017-10-17T17:21:36Z (GMT). No. of bitstreams: 1 2016 - Eduardo Lima de Sousa.pdf: 1396561 bytes, checksum: e5e6a638d3487649bffde6f8de4a6de6 (MD5) Previous issue date: 2016-06-30 / In this work we attempted to discuss the teaching of food safety for students Course midlevel Integrated Agricultural Technician of the Federal Institute of Education, Science and Technology (IFAM) Campus Tabatinga. This research was divided into two stages, the first check in the Matrix Curriculum topics course on the topic title, and the second time to evaluate the process of teaching and learning through the application of a workshop for students. In the first stage were studied five plans of course Campi of IFAM , in order to verify the existence of topics that promote awareness on issues related to the topic food security , resulting in the absence of the term food security in the disciplines offered only sub themes and with different classifications and different workloads , when compared to Campi. In the second stage, to better understand the class and have better planning workshop was held a free association of words test and a questionnaire to characterize the subjects. As a diagnostic tool, we used the method of evaluation of the individual attitude of 14 subjects to analyze the process of teaching and learning with the holding of a workshop on the subject, which is consisting of application and analysis of a structured questionnaire with 23 statements using Likert Scale - a total of five points - before (Initial Test - IT ) and after ( Final Test -TF ) workshop. Analysis of the questionnaire showed that all students had increased average after the workshop and the overall average of students was 3.99 and 4.73 in the initial and final tests, respectively, which showed an increase of 0.74, the which shows that the students acquired knowledge during activity.Also held analysis of photographic images and video recording. This work is a contribution to the Agricultural Education , therefore, can be seen with the results , the evaluation process for the individual attitude of the method indicated that the analyzed students showed satisfactory performance throughout this learning process and this practice can be used by educators in this area , but when analyzing the course plans, compared the Campi of the IFAM, there is a disparity regarding the theme Food safety, a discussion for standardization , partial or total is necessary, in this regard. / Neste trabalho buscou-se discutir sobre o ensino da seguran?a alimentar para discentes do Curso T?cnico Integrado de n?vel m?dio em Agropecu?ria do Instituto Federal de Ensino, Ci?ncias e Tecnologia (IFAM) Campus Tabatinga. Esta pesquisa foi dividida em duas etapas, sendo a primeira verificar na Matriz Curricular do curso t?picos sobre o Tema t?tulo, e no segundo momento avaliar o processo de ensino-aprendizagem atrav?s da aplica??o de uma oficina para discentes. Na primeira etapa foram estudados cinco planos de curso de Campi do IFAM, com o objetivo de verificar a exist?ncia de t?picos que fomentem a percep??o para assuntos relacionados ao tema seguran?a alimentar, tendo como resultado, a aus?ncia do termo Seguran?a alimentar nas disciplinas ofertadas, apenas sub temas e com nomenclaturas distintas e cargas hor?rias diferentes, quando comparados os Campi. Na segunda etapa, para conhecer melhor a turma e ter um melhor planejamento da Oficina, foi realizado um Teste de associa??o livre de palavras e um question?rio para caracteriza??o dos sujeitos. Como instrumento diagn?stico, utilizou-se o m?todo de avalia??o de atitude do indiv?duo de 14 sujeitos para analisar o processo de ensino-aprendizagem com a realiza??o de uma oficina sobre o tema, sendo este consistindo em aplica??o e an?lise de um question?rio estruturado com 23 afirmativas utilizando Escala de Likert - totalizando cinco pontos - antes (Teste Inicial-TI) e depois (Teste Final-TF) da oficina. A an?lise do question?rio mostrou que todos os discentes tiveram aumento da m?dia ap?s a oficina e a m?dia geral dos discentes foi de 3,99 e 4,73 nos testes inicial e final, respectivamente, o que demonstrou uma evolu??o de 0,74, o que evidencia que os discentes adquiriram conhecimento durante a atividade. Al?m disso, realizou-se an?lise de imagens fotogr?ficas e videograva??o. Este trabalho ? uma contribui??o para a Educa??o Agr?cola, pois, se pode observar com os resultados obtidos, que o processo de avalia??o pelo m?todo da atitude do indiv?duo, indicaram que os discentes analisados apresentaram desempenho satisfat?rio ao longo desse processo de ensino-aprendizagem, e tal pr?tica pode ser utilizada por educadores desta ?rea, mas, quando analisado os planos de curso, quando comparados os Campi do IFAM, h? uma disparidade referente ao Tema Seguran?a alimentar, sendo necess?ria uma discuss?o para a padroniza??o, parcial ou total, neste quesito.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-10-18T10:52:37Z No. of bitstreams: 1 2015 - Bruna Rodrigues Pereira.pdf: 2671756 bytes, checksum: b38e36947fda465d9d78272a81b2e947 (MD5) / Made available in DSpace on 2017-10-18T10:52:37Z (GMT). No. of bitstreams: 1 2015 - Bruna Rodrigues Pereira.pdf: 2671756 bytes, checksum: b38e36947fda465d9d78272a81b2e947 (MD5) Previous issue date: 2015-09-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / This study aimed to evaluate the quality of 'Sweet Celebration' and 'Sweet Globe' grapes, subjected to minimally processing, as well as the effectiveness of three rinsing solutions (water, sodium metabisulfite and chlorine) and pedicel cut intensity (with and without pedicel), in the conservation of these fruits during 12 days refrigerated storage to temperature at 8 ? C . The experiments were performed at Embrapa Agroind?stria de alimentos. For both experiments were applied rinse solutions, with water, sodium metabisulfite (20 mg. L-1) and chlorine (8 mg. L-1), that characterized the treatments, during the rinse step of minimally processing grapes, it being used two pedicel cut intensities:full cut and maintenance of a little fragment about 0,5 cm. Quality analyzes were performed at 0, 3, 6, 9, and 12 days of storage, and it was determined fresh weight loss cumulative , fruit firmness, color analysis, acidity, pH, total soluble solids, SST/ATT rate , sugars (sucrose , fructose and glucose) and enzymatic activity of pectinametilesterase for both cultivars. For Sweet Celebration grapes were also carried out the percentage fruit loss (9th and 12th day of storage) and anthocyanins. In 'Sweet Globe' grapes were realized total carotenoids, chlorophylls (a, b and total) and microbiological analyses. To the cultivate Sweet Celebration was possible identify berries out of commercial standard in the 9? day of storage. In the fresh weight loss cumulative, berries without pedicel had higher loss in the rinse with water from the 6th day of storage. For berries with pedicel the rinse with chlorine had the lowest fresh weight loss cumulative up 9th day of storage. For the firmness , berries without pedicel (4.44 N) had lower firmness compared to berries with pedicel (5.04 N), there wasn't significant difference between the rinsing solutions (p> 0.05). To cultivate Sweet Globe, berries with pedicel and rinsed with water had higher fresh weight loss cumulative from the 9th day of storage. In the berries without pedicel the rinse with water led to lower fresh weight loss cumulative from the 6th day of storage. There was no difference between the isolated factors rinse solutions and pedicel cut intensit to the firmness analysis. All rinse solutions were efficient in the microbiological analysis, so the minimally processed Sweet Globe grapes were in the standard established by law for human consumption / O presente trabalho objetivou avaliar a qualidade de uvas ?Sweet Celebration? e ?Sweet Globe?, submetidas ao processamento m?nimo, assim como a efetividade de tr?s solu??es enxaguantes (?gua, metabissulfito de s?dio e cloro) e da intensidade de corte do pedicelo (com e sem pedicelo), na conserva??o desses frutos, durante 12 dias de armazenamento refrigerado a 8?C. Os experimentos foram realizados na Embrapa agroind?stria de alimentos. Para ambos experimentos, foram aplicadas solu??es de enx?gue, com ?gua, metabissulfito de s?dio (20 mg. L-1) e cloro (8 mg. L-1), que caracterizaram os tratamentos, durante a etapa de enx?gue do processamento m?nimo das uvas, sendo adotadas duas intensidades de corte do pedicelo: retirada total do mesmo e manuten??o de um pequeno fragmento com aproximadamente 0,5 cm. Foram realizadas an?lises de qualidade nos 0, 3, 6, 9, e 12 dias de armazenamento, sendo determinadas a perda acumulada de massa fresca, firmeza dos frutos, an?lise de cor, acidez, pH, s?lidos sol?veis totais, rela??o SST/ATT, a??cares (sacarose, frutose e glicose) e atividade enzim?tica da pectinametilesterase para as duas cultivares. Para as uvas Sweet Celebration, foram tamb?m realizadas a porcentagem de perda de frutos (9? e 12? dia de armazenamento) e antocianinas totais. Para as uvas ?Sweet Globe?, foram realizadas as an?lises de caroten?ides totais, clorofilas (a, b e total) e an?lise microbiol?gica. Para a cultivar Sweet Celebration, foi poss?vel detectar bagas fora de padr?o comercial no 9?dia de armazenamento. Na perda acumulada de massa fresca, bagas sem pedicelo apresentaram maior perda no enx?gue com ?gua a partir do 6? dia de armazenamento. Para bagas com pedicelo o enx?gue com cloro apresentou a menor perda acumulada de massa fresca at? o 9? dia de armazenamento. Para a firmeza das bagas, bagas sem pedicelo (4,44 N) apresentaram menor firmeza, quando comparadas ?s bagas com pedicelo (5,04 N), n?o havendo diferen?a significativa entre as solu??es de enx?gue (p> 0,05). Para a cultivar Sweet Globe, bagas com pedicelo e enxaguadas com ?gua, apresentaram maior perda acumulada de massa fresca , a partir do 9? dia de armazenamento. Para bagas sem pedicelo o enx?gue com ?gua levou a menor perda acumulada de massa fresca a partir do 6? dia de armazenamento. N?o houve diferen?a entre os fatores isolados solu??es de enx?gue e intensidade de corte do pedicelo para a an?lise de firmeza. Todas as solu??es de enx?gue foram eficientes do ponto de vista microbiol?gico, estando as uvas Sweet Globe minimamente processadas dentro do padr?o estabelecido pela legisla??o para consumo humano

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-01-25T12:16:35Z No. of bitstreams: 1 2010 - C?sar Augusto Vandesteen Junior.pdf: 8666751 bytes, checksum: 5dc79e2a6f8c59b75d62504ea2f4fa21 (MD5) / Made available in DSpace on 2018-01-25T12:16:36Z (GMT). No. of bitstreams: 1 2010 - C?sar Augusto Vandesteen Junior.pdf: 8666751 bytes, checksum: 5dc79e2a6f8c59b75d62504ea2f4fa21 (MD5) Previous issue date: 2010-03-29 / Nowadays, in Brazil becomes necessary the attainment of methods of low cost for the detention of rutting in bovine females and one of the main traditional methods is the use of teaser bulls. These can be obtained with a great variety of surgical techniques, amongst them, the section of apical ligament, that although low cost and absence of post-surgical care, has not been practiced because of unsatisfactory results, probably due to lack of standard procedures. This study aimed to readjust this technique, considering the easy execution and low cost, standardizing it for any bovine cattle, becoming it efficient in any male bovine, from the puberty without dependence of race. 15 Parts of bovine penises in varied races and ages, varying of 12 and 28 months, had been obtained in slaughter houses for anatomic evaluations, with primacy attention in the dorsal apical ligament, getting in such a way a measure, based on statistical correlation calculations, for the attainment of the lesser density?s accurate place of this ligament and therefore the ideal place to incision and removal target ligament?s part. This measure was gotten doubling the distance between the portion proximal of the glands until the rafe of the foreskin in proximal direction from rafe of the foreskin. 16 male bovines, without emasculating had been selected and previously tested about the libido, divided in two groups of eight and submitted to the surgery of section of the apical ligament, through the measure gotten in the study of parts obtained in slaughter house, removal about five centimeters target of ligament. This procedure did not produced great post-surgical care and was gotten 100% of penis deviation, with mount without penetration, having materialize success of the technique?s readjustment. A group of bulls was introduced in the herd in the eighth surgical day after and the other in 15o day after, without difference between the two, demonstrating a reduction in the rest after surgery and becoming viable still more the technique, due to earlier teaser bulls activity. All the animals had not presented changes of behavior or reduction of libido during the 30 months of observation, demonstrated longevity of the teaser bulls gotten with this technique. / No Brasil, cada vez mais se faz necess?rio a obten??o de m?todos de baixo custo para a detec??o de cio em f?meas bovinas e um dos principais e tradicionais m?todos ? a utiliza??o de rufi?es. Estes podem ser obtidos com variadas t?cnicas cir?rgicas, dentre elas a de sec??o do ligamento apical, que apesar de baixo custo e aus?ncia de p?s operat?rio, n?o tem sido praticada devido ? obten??o de resultados n?o satisfat?rios, provavelmente devido ? falta de padroniza??o. Este estudo objetivou resgatar esta t?cnica, devido ? praticidade de execu??o e baixo custo, padronizando-a para qualquer rebanho bovino, tornando-a eficiente em qualquer bovino macho que tenha atingido a puberdade independente de ra?a. Foram estudadas 15 pe?as de matadouro de p?nis bovino de variadas ra?as e idades variando de 12 a 28 meses, com enfoque no ligamento apical dorsal, obtendo desta forma uma medida, baseada em c?lculos estat?sticos de correla??o, para a obten??o do local exato de menor densidade deste ligamento e portanto o local ideal para incis?o e extirpa??o. Esta medida foi obtida atrav?s da transloca??o da dist?ncia entre a por??o mais proximal da glande at? a rafe do prep?cio em sentido proximal a partir da rafe do prep?cio. Foram selecionados 16 bovinos machos, n?o castrados e previamente testados quanto a libido, divididos em dois grupos de oito e submetidos ? cirurgia de sec??o do ligamento apical, atrav?s da medida obtida no estudo de pe?as de matadouro, extirpando cerca de cinco cent?metros de ligamento. Este procedimento n?o gerou grandes cuidados p?s operat?rios e foi obtido 100% de desvio de p?nis com monta sem penetra??o, concretizando o sucesso do reajuste da t?cnica. Um grupo foi introduzido no rebanho no oitavo dia p?s cir?rgico e o outro no 15o dia, n?o havendo diferen?a entre os dois, demonstrando uma redu??o no repouso p?s cir?rgico e viabilizando ainda mais a cirurgia, devido ? precocidade de utiliza??o desse rufi?o. Os animais n?o apresentaram mudan?as de comportamento ou diminui??o de libido durante os 30 meses de observa??o, demonstrando longevidade do rufi?o obtido por esta t?cnica.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-02-07T14:43:58Z No. of bitstreams: 1 2007 - Carlos Torres Ribeiro.pdf: 5710755 bytes, checksum: 9715a44d07b4fa0d4b48d83f3dac6d34 (MD5) / Made available in DSpace on 2018-02-07T14:43:58Z (GMT). No. of bitstreams: 1 2007 - Carlos Torres Ribeiro.pdf: 5710755 bytes, checksum: 9715a44d07b4fa0d4b48d83f3dac6d34 (MD5) Previous issue date: 2007-08-31 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil. / Outbreaks of infection by Lawsonia intracelullaris in swine and rabbits in the State of Rio de Janeiro are described. The symptomathology was characterized by bloody and aquous diarrhea, with respectively superacute and acute course. Post-mortem findings were a reticulate aspect of the ileum. In swine its mucosa was moderately thickened and it contained large amounts of partially coagulated blood; in rabbits the wall of the ileum was much thickened and the contents were aquous. Histopathological examination revealed severe hyperplastic proliferation of the epithelial cells of the Lieberk?hn crypts, sometimes associated with inflammatory and necrotic alterations. Silver impregnation and imunohistochemistry demonstrated the presence of large amounts of bacteria in the cytoplasm of the cryptal epithelial cells. In swine L. intracellularis was seen also by ultramicroscopic examination. This is the first report of the disease in the State of Rio de Janeiro. / Descrevem-se surtos de infec??o por Lawsonia intracellularis em su?nos e coelhos, ocorridos no Estado do Rio de Janeiro. A sintomatologia caracterizou-se por diarr?ia sanguinolenta e aquosa, com evolu??o superaguda e aguda, respectivamente. ? necropsia verificaram-se ?leo de aspecto reticulado, com mucosa moderadamente espessada, contendo grande quantidade de sangue parcialmente coagulado, no caso dos su?nos, e ?leo com parede muito espessada e conte?do aquoso nos coelhos. O exame histol?gico revelou marcada prolifera??o hiperpl?sica das c?lulas epiteliais das criptas de Lieberk?hn, por vezes, associada a altera??es inflamat?rias e necr?ticas. Impregna??o pela prata e t?cnica imunoistoqu?mica demonstraram presen?a da bact?ria, em grande quantidade, dentro do citoplasma das c?lulas epiteliais das criptas de su?nos e coelhos. Em su?nos, L. intracellularis tamb?m foi visualizada pela ultramicroscopia. Essa ? a primeira descri??o da enfermidade no Estado do Rio de Janeiro.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-02-09T11:41:07Z No. of bitstreams: 1 2016 - Ramon de Souza Victorino da Silva.pdf: 1815548 bytes, checksum: d38cb3bc107f782e4c75f4e66118d838 (MD5) / Made available in DSpace on 2018-02-09T11:41:07Z (GMT). No. of bitstreams: 1 2016 - Ramon de Souza Victorino da Silva.pdf: 1815548 bytes, checksum: d38cb3bc107f782e4c75f4e66118d838 (MD5) Previous issue date: 2016-02-18 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil. / The aim of this project was to develop a statistical classifier based on algorithms using Bayesian theorem for prediction of nitrogen applied to the soil using low cost multispectral images Tifton85 pastures From information obtained from these images the indexes were calculated spectrum, which was used in a feature vector for discriminating N levels applied to the soil. The research was developed in the Rural Federal University of Rio de Janeiro, Department of Engineering, Machinery Area and Energy in Agriculture. The data were obtained from an experiment installed in the production area of Company Feno Rio Agro LTDA, partner in the project. Images were acquired in 2 times one after 36 days due to the cutting standardization of culture using a UAV (Unmanned Aerial Vehicle) and at 7, 14, 21, 28, 35, 42, 56 days using an imaging platform an experiment with 6 portions 250m2 (10x25m) containing respectively the treatments (0, 50, 100, 150, 200 and 250 kg ha-? N), statistical analyzes were performed the computer program SAS version student using PROCDISCRIM procedure. It was determined discriminant functions for each dose of nitrogen, using as feature vectors vegetation indices (NDVI, GNIR, SAVI, GNDVI, RNIR). These discriminant functions were tested in a Bayesian classifier, and the highest accuracies were using vegetation indices together getting a Kappa coefficient and overall accuracy of 83% and 80%, respectively. The results indicate that low cost multispectral images can be used to develop classifiers of nitrogen applied to the soil. These binders may be applied in computational algorithms in agricultural machinery control systems for fertilizer application at variable rates in precision agriculture. / O objetivo geral deste projeto foi desenvolver um classificador estat?stico com base em algoritmos utilizando o teorema bayesianos para predi??o de doses de nitrog?nio aplicadas ao solo, atrav?s de imagens multiespectrais de baixo custo em pastagens de Tifton85 A partir de informa??es obtidas nessas imagens foram calculados os ?ndices espectrais, os quais foram utilizados em um vetor de caracter?sticas para discriminar n?veis de N aplicados ao solo. A pesquisa foi desenvolvida na Universidade Federal Rural do Rio de Janeiro, Departamento de Engenharia, ?rea de M?quinas e Energia na Agricultura. Os dados foram obtidos de um experimento instalado no campo de produ??o da Empresa Feno Rio Agro LTDA, parceira do projeto. As imagens foram adquiridas em 2 momentos uma ap?s 36 dias decorrentes ao corte de uniformiza??o da cultura utilizando um VANT (Ve?culo A?reo N?o Tripulado) e aos 7, 14, 21, 28, 35, 42, 56 dias utilizando uma plataforma de capta??o de imagens de um experimento com 6 parcelas contendo respectivamente os tratamentos (0, 50, 100, 150, 200 e 250 kg ha -? de N), as an?lises estat?sticas foram realizadas no programa computacional SAS vers?o estudante, utilizando o procedimento PROCDISCRIM. Determinou-se fun??es discriminantes para cada dose de nitrog?nio, utilizando-se como vetores de caracter?sticas os ?ndices de vegeta??o (NDVI, GNIR, SAVI, GNDVI, RNIR). Essas fun??es discriminantes foram testadas em um classificador bayesiano, sendo que a maior acur?cia de classifica??o foi utilizando os ?ndices de vegeta??o em conjunto obtendo um coeficiente Kappa e a exatid?o global de 83% e 80%, respectivamente. Os resultados indicam que imagens multiespectrais de baixo custo podem ser utilizadas para desenvolver classificadores de doses de nitrog?nio aplicadas ao solo. Esses classificadores poder?o ser aplicados em algoritmos computacionais em sistemas de controle de m?quinas agr?colas para aplica??o de fertilizantes a taxas vari?veis em agricultura de precis?o.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-04-10T15:37:36Z No. of bitstreams: 1 2010 - Gabriela Fernandes Samico.pdf: 726920 bytes, checksum: 6b47b0e0b5e09678a7fcd0004c798bd6 (MD5) / Made available in DSpace on 2018-04-10T15:37:36Z (GMT). No. of bitstreams: 1 2010 - Gabriela Fernandes Samico.pdf: 726920 bytes, checksum: 6b47b0e0b5e09678a7fcd0004c798bd6 (MD5) Previous issue date: 2010-05-13 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil. / The passionfruit (Passiflora edulis, F. flavicarpa, Deg) it is fruit originary of America Tropical, that deserves prominence for the sensorial characteristics of the juice that produces, traditionally consumed in natural way or industrialized, being important source of minerals and vitamins, as calcium, phosphorous and vitamin C. Brazil is the main producing and consuming country of passionfruit. The excellent acceptance of this juice has been responsible for the increment of culture of passionfruit, the industries extracting machines only use to advantage the pulp, that represents about 30% of the weight of the fruit, the remain, peel and seeds, that according to some authors, 70% of the all up weight correspond, when used in the feeding of animals are not thrown in the garbage, without no treatment, causing serious problems to the ecosystem, with consequences in the health of the bordering population. This work had objective to develop technology for oil obtention of seeds of passionfruit feeding human being and to characterize its physical and chemical properties, and to evaluate proteinic and energy the mineral content, of the defatted deeds, effluent of this process and uses it in the cookie elaboration. The analyses had disclosed that the seed of passionfruit partially dehydrated contained 1.7% of oil, consisting of 14,64% of oleic acid and 69.73% of linoleic acid. Tests of oxidation of this fraction showed that the OSI of this oil was of 11h. The defatted seeds have 8.44% of humidity on average, 0.71% of reducing carbohydrates, 1.82% of not reducing carbohydrates, 4.22% of starch, 31.42% of protein, 1.18% of lipids, 3.64% of soluble fibers, 64.30% of insoluble fibers and 1.38% of leached ashes. The sensorial tests show the preference for the formularization that contained 8% of Flour of seed taken away the fat of passionfruit. The perspective of exploitation of this residue of the manufacter process, will become the agro-industrial one of passionfruit more income-producing, since they also exist alternative viable of exploitation of the rind, with this, is possible to implant in the agroindustry of passionfruit, so dreamed clean technology. / O maracuj? (Passiflora edulis, f. flavicarpa, Deg) ? um fruto origin?rio da Am?rica Tropical, que merece destaque pelas caracter?sticas sensoriais do suco que produz,, tradicionalmente consumido ao natural ou industrializado, sendo importante fonte de minerais e vitaminas, como c?lcio, f?sforo e vitamina C. O Brasil ? o principal pa?s produtor e consumidor de maracuj?-amarelo. A excelente aceita??o desse suco tem sido respons?vel pelo incremento de cultivo de maracuj?, que para sua obten??o, as ind?strias extratoras aproveitam somente a polpa, que representa cerca de 30% do peso do fruto, o restante, casca e sementes, que segundo alguns autores, correspondem a 70% do peso total, quando n?o utilizadas na alimenta??o de animais s?o jogadas no lixo, sem nenhum tratamento, causando s?rios problemas ao ecossistema, com reflexos na sa?de das popula??es lim?trofes aos descartes. Este trabalho teve como objetivo desenvolver tecnologia para obten??o de ?leo de sementes de maracuj? para alimenta??o humana e caracterizar suas propriedades f?sicas e qu?micas, e avaliar o conte?do mineral, prot?ico e energ?tico da torta desengordurada, efluente desse processo e utiliza-lo na elabora??o de biscoito tipo ?cookie?. As an?lises revelaram que a semente de maracuj? parcialmente desidratada continha 26% de ?leo, constitu?do de 14,64% de ?cido ol?ico e 69,73% de ?cido linol?ico. Testes de oxida??o desta fra??o mostraram que o ?ndice de estabilidade oxidativa deste ?leo foi de 11horas. A torta possui em m?dia 8,44 % de umidade, 0,71% de glic?dios redutores, 1,82% de glic?dios n?o redutores, 4,22% de amido, 31,42% de prote?na, 1,18% de lip?deos, 3,64% de fibras sol?veis, 64,30% de fibras insol?veis e 1,38% de cinzas. Os testes sensoriais apresentaram a prefer?ncia pela formula??o que continha 8% de Farinha de semente desengordurada de maracuj?. A perspectiva de aproveitamento desse res?duo do processo fabril, tornar? a agroindustrial do maracuj? mais rent?vel, j? que existem tamb?m alternativas vi?veis de aproveitamento das casca, com isso, ? poss?vel implantar no agroneg?cio do maracuj?, a t?o sonhada tecnologia limpa.