Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-03-24T11:59:07Z No. of bitstreams: 1 2016 - Bruno Ricardo Soares A. da Silva.pdf: 2937766 bytes, checksum: 9d74f19c8b592d9a097f535ef56dd464 (MD5) / Made available in DSpace on 2017-03-24T11:59:07Z (GMT). No. of bitstreams: 1 2016 - Bruno Ricardo Soares A. da Silva.pdf: 2937766 bytes, checksum: 9d74f19c8b592d9a097f535ef56dd464 (MD5) Previous issue date: 2016-02-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Hypertrophic cardiomyopathy is the most common heart disease in cats and it is characterized by concentric left ventricular hypertrophy. It is a genetic disease, autosomal dominant with incomplete penetrance, which predispose animals to minor changes in the cardiovascular system as arrhythmias and thromboembolism, these being possible causes of sudden death of these animals. Although traditionally linked to the involvement of breeds of cats like Maine Coon, Ragdoll, Sphynx and Persian, hypertrophic cardiomyopathy can affect any breed and even mixed breed cats. The aim of this study was the diagnosis of hypertrophic cardiomyopathy in a population of domestic short hair cats, and relate with the clinical and imaging findings with early diagnosis. Were evaluated 135 domestic short hair cats by Doppler echocardiography, between males and females of different ages, no previous history of suspected heart disease, to identify the concentric ventricular hypertrophy of the left ventricle. Were recognized cats with hypertrophy those, which interventricular septum and the free wall of the left ventricle measures during diastole, animal that presented 5 mm thickness on this measures. Animals identified with concentric ventricular hypertrophy were subjected to laboratory tests of urea, creatinine, sodium, potassium, ionized calcium, phosphorus, T4total, urinalysis, and imaging tests like ultrasound for differential diagnosis of diseases that can cause concentric hypertrophy, such as hypertension, chronic kidney disease, hyperaldosteronism and hyperthyroidism. Were diagnosed 10 cats with concentric ventricular hypertrophy, these five were classified as having concentric secondary ventricular hypertrophy to other diseases and five characterized as having hypertrophic cardiomyopathy. Among the results was noted that hypertrophic cardiomyopathy presents: 1) prevalence of 3.7%; 2) silent evolution for clinical aspects; 3) even with borderline measures, has changes that need monitoring for early diagnosis of complications; 4) a phenotypic diversity as the site of involvement / A cardiomiopatia hipertr?fica, ? a cardiopatia mais comum nos gatos, sendo caracterizada pela hipertrofia conc?ntrica do ventr?culo esquerdo. ? uma doen?a de origem gen?tica, autoss?mica dominante de penetr?ncia incompleta, que predisp?em os animais a altera??es secund?rias do sistema cardiovascular como arritmias e tromboembolismo, causas poss?veis de morte s?bita destes animais. Apesar de sua ocorr?ncia estar tradicionalmente relacionada ?s ra?as Maine Coon, Ragdoll, Sphynx e Persa, a cardiomiopatia hipertr?fica pode acometer qualquer outra ra?a e at? mesmo gatos sem ra?a definida. O objetivo do presente estudo foi realizar o diagn?stico da cardiomiopatia hipertr?fica em uma popula??o de gatos pelo curto dom?stico, e relacionar os achados cl?nicos e de imagem com diagn?stico precoce da doen?a. Foram submetidos ao exame ecodopplercardiogr?fico 135 gatos pelo curto dom?stico, entre machos e f?meas de diferentes idades, sem hist?rico pr?vio de suspeita de cardiopatia, para identifica??o da hipertrofia ventricular conc?ntrica do ventr?culo esquerdo. Foram considerados animais portadores de hipertrofia aqueles que apresentaram medidas de septo interventricular e/ou parede livre do ventr?culo esquerdo, ambos na di?stole, maiores que 5 mm de espessura. Os animais identificados com hipertrofia ventricular conc?ntrica, foram submetidos, al?m do exame cl?nico, ? exames laboratoriais de ureia, creatinina, s?dio, pot?ssio, c?lcio i?nico, f?sforo, T4total e urin?lise, e exames de imagem como ultrassonografia, para diagn?stico diferencial de doen?as que possam causar hipertrofia conc?ntrica, como hipertens?o arterial, doen?a renal cr?nica, hiperaldosteronismo e hipertireoidismo. Foram diagnosticados 10 gatos portadores de hipertrofia ventricular conc?ntrica, destes cinco foram classificados como portadores de hipertrofia ventricular conc?ntrica secund?ria a outras doen?as, sendo o hipertireoidismo a principal causa (4/5) e cinco caracterizados como portadores de cardiomiopatia hipertr?fica. Com base nos resultados p?de-se concluir que a cardiomiopatia hipertr?fica: 1) apresentou preval?ncia de 3,7% na popula??o de gatos pelo curto dom?stico da cidade do Rio de Janeiro; 2) cursa com evolu??o silenciosa quanto aos aspectos cl?nicos; 3) apresentou diversidade fenot?pica quanto ao local de acometimento no ventr?culo esquerdo; e 4) al?m da espessura de septo e parede livre na di?stole, outras medidas ecodopplercardiogr?ficas lim?trofes sinalizam a necessidade de acompanhamento do paciente, para diagn?stico precoce de futuras complica??es

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-04T12:33:17Z No. of bitstreams: 1 2016 - V?vian Palheta da Rocha 2016.pdf: 925358 bytes, checksum: 56f81d180a908791a6be805b35fee76f (MD5) / Made available in DSpace on 2017-04-04T12:33:17Z (GMT). No. of bitstreams: 1 2016 - V?vian Palheta da Rocha 2016.pdf: 925358 bytes, checksum: 56f81d180a908791a6be805b35fee76f (MD5) Previous issue date: 2016-03-14 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The crambe (Crambe abyssinicaHochst) has been cultivated because of its potential in the production of oil in its seeds, as fodder plant, among other uses. For this species, the high oil content affects the storage potential of seeds and associated with factors such as the pericarp, low availability of water in the soil can provide uneven germination. So, to reduce the nega-tive effects of the factors thatinterfere with crambe seed germination, it can be through the use of priming techniques. The objective of this research was to evaluate the efficiency of priming techniques in physiological quality of crambe seeds stored under controlled condi-tions. Therefore, the experiment was conducted in 2015 to 2016 period for crambe, classified seeds were used, treated, packed in paper bags krafts. After zero, three and six months of stor-age, the seeds were submitted to physiological primingtechniques, using the unmonitored hydration techniques (immersion in water), matriosmopriming with PEG 6000 -0.2 MPa, moist atmosphere and matripriming. Unconditioned seeds were used as control. The seeds were evaluated after drying by germination and vigor (first count, seedling performance, seedling emergence and electrical conductivity). From the results it can be concluded that the seeds subjected to matriosmoprimingand matriprimingpresent approximately 40% water content after 8 hours of imbibition. There was favoring the germination of seeds and dry mass of lot 1 after they have been submitted to matriosmoprimingat 0, three and six months. There was an increase of germination rate of seeds lot 3 which were submitted to matriprimingthe three and six months of storage. / O crambe (Crambe abyssinica Hochst) tem sido cultivado devido ao seu potencial na produ??o de ?leo em suas sementes e, como planta forrageira, entre outros usos. Para esta esp?cie, o alto teor de ?leo prejudica o potencial de armazenamento de suas sementes, assim como o uso de sementes com a presen?a do pericarpo do fruto no momento da semeadura ea baixa dispo-nibilidade de ?gua no solo podem proporcionar germina??o desuniforme. Para reduzir os efeitos negativos dos fatores que interferem no desempenho de sementes de crambe, pode ser em-pregado o condicionamento fisiol?gico das sementes. Assim, o objetivo desta pesquisa foi avaliar a efici?ncia de diferentes t?cnicas de condicionamento fisiol?gico na qualidade fisio-l?gica das sementes de crambe armazenadas em condi??es controladas. Para tanto, o experi-mento foi realizado no per?odo de 2015 a 2016. Sementes classificadas, tratadas e acondicio-nadas em sacos de papel foram avaliadas ap?s zero, tr?s e seis meses de armazenamento. As sementes foram submetidas ?s t?cnicas de hidrata??o n?o monitorada (imers?o em ?gua), matriosmocondicionamento com PEG 6000 a -0,2 MPa, atmosfera ?mida e matricondicionamento. Sementes n?o condicionadas foram utilizadas como controle. As sementes foram avaliadas ap?s secagem pelos testes de germina??o e vigor (primeira contagem, desempenho de pl?ntulas, emerg?ncia de pl?ntulas e condutividade el?trica). Pelos resultados, pode-se concluir que as sementes submetidas ao matriosmocondicionamento e ao matricondicionamento apresen-tam em torno de 40% de teor de ?gua ap?s 8 horas de embebi??o. Houve favorecimento da germina??o das sementes e da massa seca das pl?ntulas do lote 1 ap?s terem sido submetidas ao matriosmocondicionamento, aos zero , tr?s e seis meses. O matricondicionamento favoreceu a velocidade de germina??o das sementes do lote 3, aos tr?s e seis meses de armazenamento.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-04-05T20:08:44Z No. of bitstreams: 1 2016 - Diego Renan Sobreiro Falc?o Paim.pdf: 1171234 bytes, checksum: 293452c2fece2086e9010a78bb8b4db1 (MD5) / Made available in DSpace on 2017-04-05T20:08:44Z (GMT). No. of bitstreams: 1 2016 - Diego Renan Sobreiro Falc?o Paim.pdf: 1171234 bytes, checksum: 293452c2fece2086e9010a78bb8b4db1 (MD5) Previous issue date: 2016-03-07 / CAPES / This study aimed to obtain a product in probiotic powder to ju?ara base, whose palm is being threatened with extinction due to indiscriminate practice of palm heart extraction and, in this sense, add value to this fruit is a proposal in an attempt to preserve the species. Initially, ju?ara pulp added probiotic microorganism Bifidobacterium spp. lactis was subjected to drying by spray drying (spray drying), which promoted a microencapsulation. In this first step, differet types and combinations of carriers agents were evaluated, totalizing four formulations: maltodextrin, maltodextrin + inulin (1:1), maltodextrin + oligofructose (1:1) and maltodextrin + inulin + oligofructose (2:1:1). The samples produced with different formulations were characterized in relation to the viable cell count, phenolics, anthocyanins, ABTS + antiradical activity, density, porosity, particle size and hygroscopicity. The samples produced with maltodextrin + inulin (1: 1) showed the best results, being selected for further stability study. In this study, samples were also produced by freeze drying, in order to compare the processes. The powders produced by the two processes were stored at different temperatures (7 and 35 ? C) and evaluated periodically for 60 days. Results showed that the samples stored at 7?C showed microorganism cell count higher than 107 CFU/g after 60 days of storage, being considered as probiotic products, whereas samples stored at 35?C showed cell counts lower than 104 CFU/g after 30 days. The samples produced by freeze drying showed higher viable cell counts compared to those produced by spray drying, after 30 days of storage. Regarding the phenolic content and antirradical activity, the samples showed a very similar behavior to each other. / Este trabalho teve como objetivo a obten??o de um produto em p? probi?tico ? base de ju?ara, cuja palmeira vem sendo amea?ada de extin??o devido ? pr?tica indiscriminada do extrativismo do palmito e, nesse sentido, agregar valor a esse fruto ? uma proposta, na tentativa de preservar a esp?cie. Inicialmente, a polpa de ju?ara adicionada do microrganismo probi?tico Bifidobacterium spp. lactis foi submetida ao processo de secagem por atomiza??o (spray drying), que promoveu sua microencapsula??o. Nesta primeira etapa, foram avaliados diferentes tipos e combina??es de agentes carreadores, totalizando quatro formula??es: maltodextrina, maltodextrina + inulina (1:1), maltodextrina + oligofrutose (1:1) e maltodextrina + inulina + oligofrutose (2:1:1). As amostras produzidas com as diferentes formula??es foram caracterizadas em rela??o ? contagem de microrganismos vi?veis, fen?licos totais, antocianinas, atividade antirradical ABTS+, densidade, porosidade, higroscopicidade e tamanho de part?culas. As amostras produzidas com maltodextrina + inulina (1:1) foram as que apresentaram os melhores resultados, sendo selecionadas para o posterior estudo de estabilidade. Nesse estudo, as amostras foram produzidas tamb?m por liofiliza??o, a fim de se comparar os processos. O produto em p? produzido pelos dois processos foi estocado a diferentes temperaturas (7 e 35?C) e avaliado periodicamente, durante 60 dias. Os resultados mostraram que as amostras estocadas a 7?C apresentaram contagem de microrganismos superior a 107 UFC/g ap?s 60 dias de estocagem, podendo ser consideradas probi?ticas, enquanto as amostras armazenadas a 35?C apresentaram contagem inferior a 104 UFC/g a partir de 30 dias. As amostras produzidas por liofiliza??o apresentaram maior contagem quando comparadas ?s produzidas por atomiza??o, a partir de 30 dias de estocagem. Em rela??o ao teor de fen?licos e ? atividade antirradical, as amostras apresentaram comportamentos muito semelhantes entre si.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-07T12:52:15Z No. of bitstreams: 1 2014 - Carlos Henrique Rocha Gon?alves.pdf: 2447515 bytes, checksum: bcb566dd037e0d15e3e3ab74112d585e (MD5) / Made available in DSpace on 2017-04-07T12:52:15Z (GMT). No. of bitstreams: 1 2014 - Carlos Henrique Rocha Gon?alves.pdf: 2447515 bytes, checksum: bcb566dd037e0d15e3e3ab74112d585e (MD5) Previous issue date: 2014-02-27 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / This work aimed to realize oxidative reactions using ozone in aqueous middle to simulate the aging aspect in Corymbia citriodora K.D. Hill & L.A.S. Johnson wood samples. Ozone that is a very reactive gas, was produced by the ozonizer by the corona effect. In order to evaluate the transformations occurred in the samples submitted to the treatment in different times and pHs (neutral, basic and acid) those samples were analyzed by various tests (color mensuration in the CIELAB colorimetric space; contact angle between water and wood by the goniometer; XPS spectroscopy and Pyrolysis ? GC/MS). The samples were obtained from a Corymbia citriodora tree log harvested in the UFRRJ campus in Serop?dica. Those samples were treated mechanically in order to adequate it to the analysis with 10 x 20 x 2 mm dimensions. It was observed that the 6h acid was the one that presented the best natural aging appearance. All the tests done have shown that the wood components had different behaviors in each treatment, especially when we talk about lignin and its G/S (Guaiacyl:Siringyl). The results have shown that the reactions were well succeed, revealing that the ozone had reacted in the majority of the samples, with the lignin, affecting the G/S ratio for all the treatments. XPS data showed the level of oxidation, for example, in the neutral treatment, showing ozone oxidative effect. In this way, the G/S ratio revealed that the ozone attack have occurred, first with the lignins that have predominantly the guaiacyl units, assuming that the reaction affected mainly the cellular region with high guaiacyl units content. It was also detected in the acid treatment, that the ozone as well reached the extractives group, especially the decanoic acids. All the experimentations were sufficient to discolor and give aging appearance to the wood, as the color changing shown by the color tests with the spectrophotometer. The contact angle has proved that the samples in order absorb more water, becoming more hydrophilic, when related to the L:C ratio (lignin:carbohydrate). / Esse trabalho teve por objetivo realizar rea??es oxidativas utilizando oz?nio em meio aquoso para simular o aspecto de envelhecimento em madeiras de Corymbia citriodora K.D. Hill & L.A.S. Johnson. O oz?nio que ? um g?s extremamente reativo foi produzido pelo ozonizador atrav?s da descarga corona. Para avaliar as modifica??es ocorridas nas amostras ap?s serem submetidas ?s rea??es de ozon?lise em diferentes tempos e pHs (neutro, b?sico e ?cido), essas amostras foram posteriormente submetidas a v?rios testes (mensura??o da cor no espa?o colorim?trico CIELAB; do ?ngulo de contato entre a ?gua e a madeira atrav?s do goni?metro; espectroscopia XPS (Espectroscopia Fotoeletr?nica de Raios-X) e pir?lise ? CG/EM (pir?lise analisada por cromatografia gasosa, acoplada ? um detector de massa)). As amostras foram obtidas de tora de madeira de um esp?cime da esp?cie Corymbia citriodora obtida no campus da UFRRJ em Serop?dica. Essas amostras foram tratadas mecanicamente de maneira a adequ?-la para an?lise, ficando com dimens?o de 10 x 20 x 2 mm. Foi constatado que as amostras do tratamento ?cido durante 6h foram as que ficaram com a apar?ncia mais pr?xima de uma madeira naturalmente envelhecida. Os diversos testes feitos mostraram que os componentes da madeira se comportaram de forma diferente em cada um dos tratamentos especialmente no que tange ? lignina na sua raz?o G/S da mesma. Os resultados mostraram que a rea??es foram bem sucedidas, revelando que o oz?nio reagiu na grande maioria das amostras com a lignina afetando a raz?o G/S para todos os tratamentos. Dados do XPS mostram os n?veis de oxida??o por exemplo dos tratamentos neutros, mostrando o efeito oxidativo do oz?nio. Neste sentido, a raz?o Guacila/Siringila revelou que o ataque do oz?nio aconteceu primeiramente com as ligninas que predominam unidades guaiacila, pressupondo que a rea??o afetou direcionadamente a regi?o da parede celular com mais alto teor de unidade Guaiac?la. Foi tamb?m detectado no tratamento ?cido que o oz?nio atingiu tamb?m o grupo dos extrativos especialmente os ?cidos decan?icos. Todos os experimentos foram suficientes para descolorir e dar apar?ncia de madeira envelhecida, como mudan?as de cor mostradas pelos testes de cor com espectrofot?metro. O ?ngulo de contato mostrou que as amostras em ordem absorvem mais ?gua, tornando-as mais hidrof?lica, quando correlacionada ? raz?o C:L (Carboidratos:Lignina).

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-11T11:12:48Z No. of bitstreams: 1 2015 - Gabriel Alves B. de Mello.pdf: 1441001 bytes, checksum: f14810fd41daf598ec3de18bceee8a01 (MD5) / Made available in DSpace on 2017-04-11T11:12:48Z (GMT). No. of bitstreams: 1 2015 - Gabriel Alves B. de Mello.pdf: 1441001 bytes, checksum: f14810fd41daf598ec3de18bceee8a01 (MD5) Previous issue date: 2015-09-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The application of different irrigation and fertilizer doses can promote changes in onion crop production variables. The aim of this study was to evaluate the effect of organic fertilizer levels (castor bean) coverage and blades irrigation applied by an automatic starter irrigation (AAI) in organic production of onion (Allium cepa L.). The experiment was conducted in the period June to October 2014 in Fazendinha Agroecol?gica 47 km (Integrated System Agroecological Production - ISAP), located between the coordinates 22?45` S and 43?41`W in the municipality of Serop?dica-RJ. The experimental design was a randomized complete block in a factorial scheme 4 x 3, with 12 treatments and 5 repetitions. The treatments were characterized by applying 4 irrigation levels (L1, L2, L3 and L4) and three doses of organic fertilizer: 300g / m?, 200 g / m? and lack of castor bean. The evaluated production variables were total productivity bulbs (TPB), fresh weight of bulbs (FWB), dry matter content of the bulbs (DMCB), dry matter productivity bulb (DMPB), average diameter bulbs (ADB); the bulbs were divided into seven cross-sectional diameter classes. It was also determined the total soluble solids (TSS) and efficiency of water use (EWU).The data were tabulated and submitted to analysis of variance and means were evaluated with the help of regression and Tukey test for the blade factor irrigation and fertilizer doses. The water depth factor significantly influence the values of TPB, FWB, DMPB and ADB ranging, respectively, 19.42 to 31.95Mg ha-1 of 61.12 to 83.30 g, the 1.73 2.59 t ha-1and the 4.52 to 5.13mm.The DMCB variables, TSS and the EWU were not affected by water depth, which showed values from 7.9 to 8.6%, from 14.6 to 16.7 ? BRIX and 83.1 to 105.5kg ha-1 mm-1.Organic fertilizer applied in coverage factor did not influence in any of the production variables, and this fact, as a result, possibly fertilization used in planting the seedlings and the high fertility of the soil level of the experimental area. We conclude that the organic cultivation of onion is promising in the environmental conditions of the Baixada Fluminense region and automation in micro-irrigation system is able to provide water content suitable soil along the onion crop cycle. The larger productive performances of culture were shown with larger water depths applied voltages / A aplica??o de diferentes l?minas de irriga??o e doses de adubo org?nico podem promover altera??es nas vari?veis de produ??o da cultura da cebola. Objetivou-se neste trabalho avaliar o efeito de doses de aduba??o org?nica (torta de mamona) por cobertura e l?minas de irriga??o aplicada por um acionador autom?tico de irriga??o (AAI) na produ??o org?nica da cebola (Allium cepa L.). O experimento foi conduzido no per?odo de junho a outubro de 2014 na Fazendinha Agroecol?gica km 47 (Sistema Integrado de Produ??o Agroecol?gica - SIPA), localizado entre as coordenadas 22?45` S e 43?41`W, no munic?pio de Serop?dica-RJ. O delineamento experimental adotado foi de blocos completos casualizados, distribu?dos em esquema fatorial 4 x 3, com 12 tratamentos e 5 repeti??es. Os tratamentos foram caracterizados pela aplica??o de quatro l?minas de irriga??o (L1, L2, L3 e L4) e tr?s doses de adubo org?nico: 300 g m-?, 200 g m-? e aus?ncia de torta de mamona. As vari?veis de produ??o avaliadas foram produtividade total de bulbos (PTB), massa m?dia fresca de bulbos (MMFB), teor de mat?ria seca dos bulbos (TMSB), produtividade massa seca de bulbo (PMSB), di?metro m?dio de bulbos (DMB), os bulbos foram separados em sete classes de di?metro transversal. Foi determinado tamb?m o teor de s?lidos sol?veis totais (TSST) e a efici?ncia do uso da ?gua (EUA). Os dados foram tabulados e submetidos ? an?lise de vari?ncia e as m?dias foram avaliadas com aux?lio da t?cnica de regress?o e teste Tukey, para os fatore l?mina de irriga??o e doses de adubo org?nico. O fator l?mina de irriga??o influenciou significativamente os valores da PTB, MMFB, PMSB e DMB que variaram, respectivamente, de 19,42 a 31,95 Mg ha-1, de 61,12 a 83,30 g, de 1,73 a 2,59 Mg ha-1 e de 4,52 a 5,13 mm. As vari?veis TMSB, TSST e EUA n?o foram influenciadas pela l?mina de irriga??o, as quais apresentaram valores de 7,9 a 8,6 %, de 14,6 a 16,7 ?BRIX e de 83,1 a 105,5 kg ha-1 mm-1. O fator adubo org?nico aplicado em cobertura n?o exerceu influ?ncia em nenhuma das vari?veis de produ??o, sendo esse fato, decorrente, possivelmente da aduba??o usada no plantio das mudas e pelo n?vel elevado fertilidade do solo da ?rea experimental. Concluiu-se que o cultivo org?nico da cebola ? promissor nas condi??es edafoclim?ticas da regi?o da Baixada Fluminense, e a automa??o em sistema de microirriga??o ? capaz de propiciar conte?do de ?gua no solo adequado ao longo do ciclo de cultivo da cebola. Os maiores desempenhos produtivos da cultura foram evidenciados com as maiores l?minas de ?gua aplicadas

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-19T16:54:59Z No. of bitstreams: 1 2012 - Doralice Chagas Tavares.pdf: 3263200 bytes, checksum: 6f53a1ad9e6222bc2e0b72188b66afd0 (MD5) / Made available in DSpace on 2017-04-19T16:54:59Z (GMT). No. of bitstreams: 1 2012 - Doralice Chagas Tavares.pdf: 3263200 bytes, checksum: 6f53a1ad9e6222bc2e0b72188b66afd0 (MD5) Previous issue date: 2012-08-30 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The discussion on energy issues are increasingly in evidence. The dynamics of gradual depletion of non-renewable energy reserves such as oil and global warming encourages a race to renewable energy alternatives. This dynamic search economically viable new energy sources through technological progress. In this context, it has increased the development of biodiesel as a renewable energy source. In the case of the Brazilian energy, biodiesel plays a promising role. The country has in its geography major agronomic advantages, being situated in a tropical area, with high brightness and mean annual temperatures. On water availability and regularity of rainfall, becomes the country with the highest potential for renewable energy production. This contributes to the generation of jobs in the primary sector, which in Brazil is of utmost importance to social development and priority of our current government. This ensures the work in the field, reducing the swelling of the big cities and favoring the cycle of self-supporting economy essential to the autonomy of the country. Moreover, the price of diesel fuel in the energy matrix is considerably high compared with other countries. Therefore, biodiesel has a higher potential market in Brazil and the technological innovations associated with it can increase the efficiency of diesel in the consumer sectors, especially the transportation sector. Therefore, this dissertation's main objective is the evaluation of the influence of the major operating variables of the transesterification reaction using as raw material mixtures of jatropha oil, frying oil and beef tallow in different proportions (30/70, 50/50, and 70/30) in the presence of methanol. Moreover, it was studied the technical viability of two different technologies for producing biodiesel (conventional, microwave) and their influence on the reaction conversion. For a better evaluation of the experiments, different schedules were performed, according to the operational variables such as time, molar ratios, temperature, proportion of mixture and catalyst concentration. The best yield value obtained for the production of biodiesel frying / sebum with the conventional technology (BFSC) was 87.09% by weight, 99.20% in content of esters, having a viscosity of 5.42 mm?/s. This performance was achieved using 0.5% KOH, mixtures of 70/30, with time of 3 hours, in terms of molar ratio 9:1 at 70 ?C. In the production of biodiesel frying / sebum with the use of microwaves (BFSM) it was observed that with 1.5% KOH, mixtures of 70/30 at time 10 seconds, the molar ratio of 9:1, was obtained a maximum yield of 88.87% by weight, 99.42% by ester content and a viscosity of biodiesel 5.61 mm?/s. In biodiesel frying / Jatropha using conventional technology (BFPC), it was reached a best yield of 80.42% by weight, 99.99% in amounts of esters, using 0.5% of KOH, mixtures of 70/30, with 3 hours reaction time, molar ratio 9:1, at 70 ?C. The best operational condition for the production of biodiesel from mixture of frying / jatropha with the use of microwaves (BFPM) was observed in 1.5% KOH, with mixtures of 30/70, 10 seconds of time and a molar ratio of 9:1, reaching a total biomass yield, conversion to esters and viscosity of 77.30%, 99.89% and 5.25 mm?/s respectively / A discuss?o em torno das quest?es energ?ticas est? cada vez mais em evid?ncia. A din?mica de esgotamento progressivo de reservas de energias n?o renov?veis como o petr?leo e o aquecimento global incentiva uma corrida por energias renov?veis alternativas. Esta din?mica busca viabilizar economicamente novas fontes energ?ticas por meio do progresso tecnol?gico. ? neste contexto que vem crescendo o desenvolvimento do biodiesel como fonte de energia renov?vel. No caso da matriz energ?tica brasileira, o biodiesel assume um papel promissor. O pa?s tem em sua geografia grandes vantagens agr?colas, por estar situado em uma regi?o tropical, com altas taxas de luminosidade e temperaturas m?dias anuais. Ligado a disponibilidade h?drica e regularidade de chuvas, torna-se o pa?s com maior potencial para produ??o de energia renov?vel. Isso contribui para a gera??o de empregos no setor prim?rio, que no Brasil ? de suma import?ncia para o desenvolvimento social e prioridade de nosso atual governo. Com isso, assegura o trabalho no campo, reduzindo o incha?o das grandes cidades e favorecendo o ciclo da economia auto-sustent?vel essencial para a autonomia do pa?s. Al?m disso, o pre?o do diesel mineral na matriz energ?tica ? consideravelmente elevado se comparado com outros pa?ses. Sendo assim, o biodiesel tem um mercado potencial elevado no Brasil e as inova??es tecnol?gicas a ele associadas podem aumentar a efici?ncia nos setores consumidores de diesel, sobretudo o setor de transportes. Portanto, este trabalho de disserta??o tem como principais objetivos a avalia??o da influ?ncia das principais vari?veis de opera??o da rea??o de transesterifica??o usando como mat?ria-prima a mistura dos ?leos de pinh?o manso, de fritura e sebo bovino, em diferentes propor??es (30/70, 50/50, e 70/30), na presen?a de metanol, na convers?o reacional e a avalia??o da influ?ncia de duas tecnologias de produ??o de biodiesel (convencional e microondas) na convers?o da rea??o. Para uma melhor avalia??o dos experimentos, foram realizados diferentes planejamentos de experimentos, de acordo com as vari?veis de opera??o como tempo, raz?o molar, temperatura, propor??o da mistura e concentra??o de catalisador. O melhor valor de rendimento obtido para a produ??o do biodiesel de fritura/sebo com a tecnologia convencional (BFSC) foi de 87,09% em massa, 99,20% em teor de ?steres com uma viscosidade de 5,42 mm?/s. Esse rendimento foi alcan?ado usando 0,5% de KOH, nas misturas de 70/30, com tempo de 3 horas, raz?o molar em condi??es de 9:1, a 70 ?C. Na produ??o do biodiesel de fritura/sebo com o uso das microondas (BFSM) observou-se que com 1,5% de KOH, nas misturas de 70/30, com tempo 10 segundos, raz?o molar de 9:1, foi obtido um rendimento m?ximo de 88,87% em massa, 99,42 % em teor de ?steres e um biodiesel com viscosidade de 5,61 mm?/s. No biodiesel de fritura/pinh?o manso utilizando a tecnologia convencional (BFPC) obteve-se o melhor rendimento em massa de 80,42%, em teores de ?steres de 99,99% usando 0,5% de KOH, nas misturas de 70/30, com tempo reacional de 3 horas, raz?o molar 9:1 a 70 ?C. A melhor condi??o operacional para a produ??o de biodiesel de fritura/pinh?o manso com o uso das microondas (BFPM) foi observado em: 1,5% de KOH, nas misturas de 30/70, com tempo de 10 segundos e raz?o molar de 9:1, com rendimento em massa, convers?o em ?steres e viscosidade de 77,30%, 99,89% e 5,25 mm?/s, respectivamente

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-20T11:39:08Z No. of bitstreams: 1 2012 - Vanessa Paulino da Cruz Vieira.pdf: 1181202 bytes, checksum: 7bfcf1b5c3509ddacbb033dcaf5448c3 (MD5) / Made available in DSpace on 2017-04-20T11:39:08Z (GMT). No. of bitstreams: 1 2012 - Vanessa Paulino da Cruz Vieira.pdf: 1181202 bytes, checksum: 7bfcf1b5c3509ddacbb033dcaf5448c3 (MD5) Previous issue date: 2012-03-29 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / This study was conducted to evaluate the activity of fluazuron administered orally in the control of R. sanguineus in dogs. A total of 12 beagle dogs which, on day 0, treatment day, were divided into two groups: Group 1. Six animals treated with oral formulation fluazuron at a dose rate of 20 mg / kg body weight and Group 2. Six dogs kept as control without treatment. On the same day, containment devices for ticks denim cloth were attached with glue to the back trichotomized dogs. After this procedure, three challenges were performed on days +1, +20 and +40, where the animals of both groups received infestations with the three stage of the tick R. sanguineus: approximately 2.500 larvae, 200 nymphs and 25 adult couples. Were used a climatic chamber with biochemical oxygen demand, BOD, at a temperature of 27 ? 1 ? C and relative humidity of 80 ? 10%. From the fourth to tenth day after each challenge, the devices were opened daily to the collection of engorged stages. Larvae and nymphs were counted and divided into syringes for evaluating the changes. The engorged females were collected and fixed in petri dishes to perform the posture that was weighed and placed in syringes, sealed with cotton, to calculate the hatchability. The efficacy of recovery fluazuron on larvae of A. sanguineus in dogs was 84.3% for day of challenge of the day +20 and 36% for the day +40. With regard to the recovery of engorged nymphs of R. sanguineus in dogs fluazuron achieved an efficacy of 82.4% and 51.7% on days +20 and +40. There was statistical difference between the mean number of engorged nymphs of R. sanguineus recovered on days +20 and +40 (p ? 0.05). The efficacy of recovery of the fluazuron engorged females was lower than 30.3% over the whole experimental period. The efficacy of treatment on reproductive performance of R. sanguineus was less than 12.4% in the three days of challenge. In inhibiting the change of larvae or nymphs ecdysis, fluazuron showed the effectiveness of 0%, 96.9% and 45.0% for days +1, +20 and +40, respectively. On day +20, there was a statistically significant difference between the mean engorged larvae to nymphs who underwent changes (p ? 0.05). The effectiveness of fluazuron on the inhibition of molting or ecdysis of nymphs to adults was 0%, 99.5% and 63.5% for days +1, +20 and +40, respectively, a statistically significant difference between mean the control and treated groups on days +20 and +40 (p ? 0.05). The growth regulator arthropod fluazuron is effective in helping control larvae and nymphs of R. sanguineus, when administered orally to dogs at a dose of 20mg/Kg. The same dose and route of administration, has no significant negative effect on female reproductive R. sanguineus. / O presente trabalho foi realizado com o objetivo avaliar a atividade do fluazuron administrado por via oral no controle de R. sanguineus em c?es. Foram utilizados 12 c?es da ra?a Beagle, que, no dia 0, dia do tratamento, foram divididos em dois grupos: Grupo 1. Seis c?es tratados com formula??o oral de fluazuron na dosagem de 20 mg/Kg de peso corporal e Grupo 2. Seis c?es mantidos como controle, sem tratamento. No mesmo dia, dispositivos para conten??o de ixod?deos de pano brim foram aderidos com cola ao dorso tricotomizado dos c?es. Ap?s esse procedimento, foram realizados tr?s desafios, nos dias +1, +20 e +40, onde os animais dos dois grupos receberam infesta??es com as tr?s fases do carrapato R. sanguineus: aproximadamente 2.500 larvas, 200 ninfas e 25 casais de adultos. Foi utilizada c?mara climatizada com demanda bioqu?mica de oxig?nio, tipo BOD, a uma temperatura de 27 ? 1oC e umidade relativa de 80 ? 10%. Do quarto ao d?cimo dia ap?s cada desafio, os dispositivos foram abertos diariamente para a coleta das fases ingurgitadas. As larvas e as ninfas foram contadas e separadas em seringas para a avalia??o da muda. As f?meas ingurgitadas foram coletadas e fixadas em placas de petri para realiza??o da postura que foi pesada e colocada em seringas, vedadas com algod?o, para o c?lculo da eclodibilidade. A efic?cia do fluazuron sobre a recupera??o de larvas de R. sanguineus em c?es foi de 84,3% para o desafio do dia +20 e 36% para o dia +40. Com rela??o ? recupera??o de ninfas ingurgitadas de R. sanguineus em c?es, o fluazuron obteve uma efic?cia de 82,4% e 51,7% nos dias +20 e +40. Houve diferen?a estat?stica entre os n?meros m?dios de ninfas ingurgitadas de R. sanguineus recuperadas nos dias +20 e +40 (p?0,05). A efic?cia do fluazuron sobre a recupera??o de f?meas ingurgitadas foi inferior a 30,3% durante todo o per?odo experimental. A efic?cia do tratamento sobre a efici?ncia reprodutiva de R. sanguineus se apresentou inferior a 12,4% nos tr?s dias de desafio. Na inibi??o da muda ou ecdise de larvas para ninfas, o fluazuron apresentou uma efic?cia de 0%, 96,9% e 45,0% para os dias +1, +20 e +40, respectivamente. No dia +20, observou-se diferen?a estat?stica significativa entre as m?dias de larvas ingurgitadas que realizaram muda para ninfas (p?0,05). A efic?cia do fluazuron sobre a inibi??o da muda ou ecdise de ninfas para adultos foi de 0%, 99,5% e 63,5% para os dias +1, +20 e +40, respectivamente, havendo diferen?a estat?stica significativa entre as m?dias dos grupos controle e tratado nos dias +20 e +40 (p?0,05). O regulador de crescimento de artr?podes fluazuron ? eficaz no aux?lio do controle de larvas e ninfas de R. sanguineus, quando administrado oralmente em c?es, na dose de 20mg/Kg. Na mesma dose e via de administra??o, n?o apresenta efeito negativo significativo na reprodu??o de f?meas de R. sanguineus.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-25T11:14:43Z No. of bitstreams: 1 2012 - Liane Caroline S Nascimento.pdf: 1534381 bytes, checksum: a4191d92ac386756692de94030e95ef7 (MD5) / Made available in DSpace on 2017-04-25T11:14:43Z (GMT). No. of bitstreams: 1 2012 - Liane Caroline S Nascimento.pdf: 1534381 bytes, checksum: a4191d92ac386756692de94030e95ef7 (MD5) Previous issue date: 2012-06-25 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / This paper describes the investigation of the centesimal composition, chemical and antioxidant activity of Morinda citrifolia L. (Rubiaceae), native of Southeast Asia, popularly known as noni, which has emerged in Brazil as a plant with great healing potential. The empirical knowledge of the population has meant that the fruit is constantly present in the diet of Maranh?o. Early in the second half of 2010 seedlings of the species were planted in two experimental areas of the Federal Institute of Maranh?o (IFMA), Campus of Z? Doca-MA, broken down by planting time. After three months of the planting in the first area the fruiting process was initiated, and it was possible to perform bromatologic analyzes. For the centesimal composition was found in pulp, seed and mixtures of both, respectively: the ash content (0,82%?0,01; 0,60%?0,01 e 0,79%?0,03), moisture (90%?0,01; 28,34%?0,01; 80,64%?0,05), proteins (4,2%?0,01; 7,47%?0,06; 4,70%?0,02), total lipids (0,34%?0,04; 0,79%?0,03; 0,63%?0,07), carbohydrates (2,68%?0,01; 25,83%?0,02; 13,24%?0,01) and calorific value (30,58kcal/100g?0,02; 140,31 kcal/100g?0,03; 77,43 kcal/100g?0,03). It was found in the pulp and seed values soluble dietary fiber (0,51?0,04; 0,93%?0,03) and insoluble (1,44?0,05; 36,04%?0,38). For the chemical characterization it was found in the pulp, seed and mixtures of both: ? Brix (8,17?0,05;-), the total acidity (0,54?0,02; 0,28?0,01; 0,62?0,02%) and pH (3,95?0,07; 4,5?0,04; 4,1?0,05), the relationship TA / SS pulp was 14.97?0,07. The content of ascorbic acid was calculated by the method Tilmans, pulp and seed fractions (117,33?0,01; 24,33?0,03), expressed in mg/100 g sample. The antioxidant capacity analyzes were performed in three different parts: the pulp, peel and seed using alcoholic extracts (11,63?0,07; 10,03?0,04; 11,19?0,01) and aqueous extract (7,20?0,07; 6,98?0,07; 7,60?0,01) through the sequestration of free radical DPPH, expressed in mM of Trolox / g sample. It was further evaluated the antioxidant capacity of different extracts of the three parts of the fruit and alcoholic extract (98.78% in pulp, 84.76% in peel and 94.96% in the seed) showed much higher antioxidant capacity than the aqueous extract ( 8.08% in the pulp, 5.22% in peel and 22.66% in the seed) and the prominence given to the pulp, followed by seed and peel, respectively. It was demonstrated that the noni fruit grown in the municipality of Z? Doca presented a rich source of nutrition important fact that justifies its inclusion in the diet. It should be noted that the pulp showed a high content of vitamin C and antioxidant activity, and seed a significant amount of insoluble fiber, suggesting that this product can be inserted in the consumer market for being a nutritious food with great herbal medicine potential / Este trabalho descreve a investiga??o da composi??o centesimal, qu?mica e atividade antioxidante de Morinda citrifolia L. (Rubiaceae), origin?rio do sudoeste da ?sia, popularmente conhecida como noni, que vem se configurando no territ?rio brasileiro como um vegetal com grande potencial fitoter?pico. O conhecimento popular tem feito com que o fruto esteja presente constantemente na dieta alimentar maranhense. No in?cio do segundo semestre de 2010 foram plantadas mudas da esp?cie em duas ?reas experimentais do Instituto Federal do Maranh?o (IFMA), Campus Z? Doca-MA, divididas por ?poca de plantio. Ap?s tr?s meses do plantio na primeira ?rea o processo de frutifica??o foi iniciado, sendo poss?vel realizar as an?lises bromatol?gicas. Para composi??o centesimal verificou-se na polpa, semente e mistura de ambos, respectivamente: o teor de cinzas (0,82%?0,01; 0,60%?0,01 e 0,79%?0,03); a umidade (90%?0,01; 28,34%?0,01; 80,64%?0,05); prote?nas (4,2%?0,01; 7,47%?0,06; 4,70%?0,02); lip?deos totais (0,34%?0,04; 0,79%?0,03; 0,63%?0,07); carboidratos (2,68%?0,01; 25,83%?0,02; 13,24%?0,01) e valor cal?rico (30,58 kcal/100g?0,02; 140,31 kcal/100g?0,03; 77,43 kcal/100g?0,03). Verificou-se na polpa e semente os valores de fibras alimentares sol?veis (0,51?0,04; 0,93%?0,03) e insol?veis (1,44?0,05; 36,04%?0,38). Para caracteriza??o qu?mica verificou-se na polpa, semente e mistura de ambos: o ?Brix (8,17?0,05;-), a acidez total (0,54?0,02; 0,28?0,01; 0,62?0,02%) e o pH (3,95?0,07; 4,5?0,04; 4,1?0,05), a rela??o ATT/SS na polpa foi de 14,97?0,07. O Teor de ?cido asc?rbico foi calculado pelo m?todo Tilmans, nas fra??es polpa e semente (117,33?0,01; 24,33?0,03), expressos em mg/100g amostra. As an?lises da capacidade antioxidante foram realizadas em tr?s partes diferentes: polpa, casca e semente utilizando extrato alco?lico (11,63?0,07; 10,03?0,04; 11,19?0,01) e extrato aquoso (7,20?0,07; 6,98?0,07; 7,60?0,01), atrav?s do sequestro do radical livre DPPH, expressos em ?M de Trolox/g amostra. Foi ainda avaliada a capacidade antioxidante dos diferentes extratos, das tr?s partes do fruto e o extrato alco?lico (98,78% na polpa; 84,76% na casca e 94,96% na semente) apresentou capacidade antioxidante bem maior que o extrato aquoso (8,08% na polpa, 5,22% na casca e 22,66% na semente) sendo o destaque dado ? polpa, seguido da semente e da casca, respectivamente. Demonstrou-se que os frutos do noni cultivados no munic?pio de Z? Doca apresentaram uma rica fonte nutricional importante fato que justifica sua inser??o na dieta alimentar. Cabe destacar que a polpa apresentou um elevado teor de vitamina C, e atividade antioxidante, e a semente um relevante teor de fibras insol?veis, sugerindo que esse produto pode ser inserido no mercado consumidor por ser um alimento nutritivo e com grande potencial fitoter?pico.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-25T13:08:45Z No. of bitstreams: 1 2014 - Luis Claudio Jord?o da Cruz.pdf: 1154945 bytes, checksum: 76e27a77176ae3119d01bd7db89464dd (MD5) / Made available in DSpace on 2017-04-25T13:08:45Z (GMT). No. of bitstreams: 1 2014 - Luis Claudio Jord?o da Cruz.pdf: 1154945 bytes, checksum: 76e27a77176ae3119d01bd7db89464dd (MD5) Previous issue date: 2014-02-19 / In the humid tropics elephant grass (Pennisetum purpureum Schum.), also known as Napier, of African origin, is known for its high production of biomass, which made him an ideal candidate for use as an energy feedstock for the biofuels industry, since the amount of fertilizer nitrogen mainly be low to avoid high costs inputs from fossil fuels. In the search for sources of biomass for the production of heat or electricity to reduce greenhouse gas (GHG), highlight the use of highly productive C4 grasses such as Miscanthus, Panicum and Saccharum spp. For this reason, many elephant grass accessions were investigated on the ability of high dry matter production without additions of nitrogen fertilizers, where the largest producers of biomass without N genotypes were as Cameroon and Gramafante. Bacteria were isolated fixing N in high numbers from this species genotypes, resulting in the study with 14 genotypes planted in soil with low 15N enrichment with production of more than 30% of its N biological fixation of N. After 10 years study, five elephant grass genotypes were indicated by the high biomass production, where there was also a lot of soil K extraction, which further highlights the use or reuse of the ashes as a nutrient source for minimize the consumption of said input. The objective of this study was to investigate the potential of ash five elephant grass genotypes and ash from industrial furnace to provide nutrients in soils of low fertility, comparing efficiency of use of nutrients by plants in response to different doses of ash and fertilizers minerals. Three experiments in pots used ash from 5 different elephant grass genotypes (Gramafante, Cameroon, BAG 02, CNPGL F06-3 and Roxo) that were conducted with low fertility soil, with brachiaria (Brachiaria decumbens Stapf.) as an indicator plant of plant development. The experiment consisted in pots with treatments with the ashes of elephant grass genotypes, contrasting with mineral fertilizer. The treatments were arranged in a randomized block design (factorial 3x2+1), with five repetitions, harvested six times at intervals of 60 days after the establishment of biomass brachiaria. A low fertility soil in a field experiment with the ashes derived from the ceramics industry of thermal power generation was conducted using elephant grass Cameroon genotype. The soil used in all experiments was Serop?dica?s Planosol, Rio de Janeiro. Experiments in pots showed a strong correlation between the amount of nutrients applied and absorption of nutrients by brachiaria at all doses of mineral fertilizers or ashes. The field trial showed no differences in income or absorption of nutrients in the elephant grass genotype Cameroon / Nas regi?es tropicais ?midas o capim-elefante (Pennisetum purpureum Schum.), tamb?m conhecido como Napier, de origem Africana, ? conhecido por sua alta produ??o de biomassa, o que o tornou um candidato ideal para seu uso como mat?ria-prima energ?tica para a ind?stria de biocombust?veis, desde que a dose de fertilizantes nitrogenados, principalmente, seja baixa para evitar altas entradas de gastos com combust?veis f?sseis. Na busca de fontes de biomassa para a produ??o de calor ou energia el?trica com redu??o de gases de efeito estufa (GEE), destacam-se o uso de gram?neas C4 altamente produtivas, como Miscanthus, Panicum e Saccharum spp. Por este motivo, diversos acessos de capim-elefante foram investigados sobre a capacidade de alta produ??o de mat?ria seca sem adi??es de fertilizantes nitrogenados, onde os maiores produtores de biomassa sem N foram gen?tipos como Cameroon e Gramafante. Foram isoladas bact?rias fixadoras de N em n?meros elevados a partir de gen?tipos desta esp?cie, que resultaram no estudo com 14 gen?tipos plantados em solo com baixo enriquecimento 15N com produ??o de mais de 30% do seu N da fixa??o biol?gica de N. Ap?s 10 anos de estudo, cinco gen?tipos de capim-elefante foram indicados pela alta produ??o de biomassa, onde se verificou tamb?m uma grande quantidade de extra??o de K do solo, o que evidencia ainda mais a utiliza??o, ou reutiliza??o, de suas cinzas como fonte de nutriente, para minimizar o consumo do referido insumo. O objetivo deste estudo foi investigar o potencial de cinzas de cinco gen?tipos de capim-elefante e de cinzas provenientes de forno industrial para disponibilizar nutrientes em solos de baixa fertilidade, com compara??o da efici?ncia de uso dos nutrientes pelas plantas em resposta de diferentes doses de cinzas e fertilizantes minerais. Tr?s experimentos em vasos utilizaram cinzas provenientes de 5 diferentes gen?tipos de capim-elefante (Gramafante, Cameroon, BAG 02, CNPGL F06-3 e Roxo) que foram conduzidos com solo de baixa fertilidade, com braqui?ria (Brachiaria decumbens Stapf.) como planta indicadora do desenvolvimento vegetal. O experimento em vasos consistiu com tratamentos com as cinzas dos gen?tipos de capim-elefante, em contraste com fertilizante mineral. Os tratamentos foram dispostos em blocos casualizados (fatorial 3x2+1), com cinco repeti??es, colhido em seis ocasi?es, com intervalos de 60 dias ap?s o estabelecimento da biomassa de braqui?ria. Um experimento de campo em solo de baixa fertilidade com as cinzas derivada da ind?stria cer?mica de gera??o de energia t?rmica foi realizado com uso do gen?tipo de capim-elefante Cameroon. O solo utilizado em todos os experimentos foi Planossolo de Serop?dica, Rio de Janeiro. Os experimentos em vasos mostraram uma forte correla??o entre a quantidade de nutriente aplicado e a absor??o de nutrientes pela braqui?ria em todas as doses de adubos minerais ou das cinzas. O experimento de campo n?o mostrou diferen?as de rendimento ou de absor??o de nutrientes no gen?tipo de capim-elefante Cameroon.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-05-03T12:33:00Z No. of bitstreams: 1 2015 - Onilda Maria Reis Vieira.pdf: 2177956 bytes, checksum: 88360171ae81218a5438c12fe82565f1 (MD5) / Made available in DSpace on 2017-05-03T12:33:00Z (GMT). No. of bitstreams: 1 2015 - Onilda Maria Reis Vieira.pdf: 2177956 bytes, checksum: 88360171ae81218a5438c12fe82565f1 (MD5) Previous issue date: 2015-12-17 / Analyze the Licentiate's Degree in Agricultural Sciences of UFRPE focusing on the contribution of training in the course of its graduates, the evaluation themselves, was the main objective of this dissertation. In 2015 this course turned fifty currently being structured from a Pedagogical Political Project established in 2004. Evaluation as a political-pedagogical element essential to the improvement of institutions, it is substantial in our work in research intended to bring the vision of those who gave and give social capital and academic at the course. The voices of the graduates were heard by applying a questionnaire with closed and open questions in which they could express their perceptions of material and immaterial aspects of the course of LA. The study also makes a presentation of the course analyzed as well as another course of the same name, but offered in UFRRJ, a degree in Agricultural Sciences, which even in different regions of the country remain an academic identity with each other. As the course trains teachers to work in education, brought the discussion that educators as Gaud?ncio Frigotto, Maria Ciavatta, Concei??o Arruda, Lia Oliveira, Marise Ramos, Demerval Saviani, among others, cause about the pernicious influence that the capitalist production models have on labor relations and consequently the educational and training activity. Continuing the analysis of the trajectory of the graduates, qualitative research, study type of case, revealed the difficulty of employability of graduates in the PE area after the expansion of IF's. / Analisar o curso de Licenciatura em Ci?ncias Agr?colas da UFRPE enfocando a contribui??o da forma??o segundo a trajet?ria de seus egressos, na avalia??o deles pr?prios, foi o principal objetivo dessa disserta??o. Em 2015 este curso completou cinquenta anos sendo estruturado atualmente a partir de um Projeto Pol?tico Pedag?gico estabelecido em 2004. A avalia??o como elemento pol?tico-pedag?gico essencial ao aperfei?oamento das institui??es, faz-se substancial em nosso trabalho que pretendeu na pesquisa trazer a vis?o daqueles que deram e d?o capital social e acad?mico ao curso. As vozes dos egressos foram ouvidas pela aplica??o de um question?rio com quest?es fechadas e abertas no qual puderam expressar suas percep??es sobre aspectos materiais e imateriais do curso de LA. O estudo tamb?m faz uma apresenta??o do curso analisado como tamb?m de outro curso de mesmo nome, mas, oferecido na UFRRJ, a Licenciatura em Ci?ncias Agr?colas, que mesmo situados em regi?es distintas do pa?s mant?m uma identidade acad?mica entre si. Como o curso forma professores para atuarem na educa??o profissional, trouxemos a discuss?o que educadores como Gaud?ncio Frigotto, Maria Ciavatta, Concei??o Arruda, Lia Oliveira, Marise Ramos, Demerval Saviani, entre outros, provocam a respeito da influ?ncia nefasta que os modelos de produ??o capitalista exercem nas rela??es trabalhistas e, consequentemente, na atividade educacional e formativa. Continuando a an?lise sobre a trajet?ria dos egressos, a pesquisa qualitativa, do tipo estudo de caso, revelou a dificuldade de empregabilidade dos licenciados, no estado de PE, ap?s a expans?o dos IF?s.