Submitted by Kelson Anthony de Menezes (kelson@ucb.br) on 2016-12-19T17:56:31Z No. of bitstreams: 1 SuzanaMeiraRibeiroTese2014.pdf: 4980549 bytes, checksum: df9c1eaadc1ba65bf7c17235d91dc3d7 (MD5) / Made available in DSpace on 2016-12-19T17:56:31Z (GMT). No. of bitstreams: 1 SuzanaMeiraRibeiroTese2014.pdf: 4980549 bytes, checksum: df9c1eaadc1ba65bf7c17235d91dc3d7 (MD5) Previous issue date: 2014-05-19 / Multi-drug resistant Klebsiella pneumoniae that produce the enzyme K. pneumoniae carbapenemase (KPC) are becoming a common cause of infections in health care centers. Furthermore, Klebsiella can develop multicellular biofilms, which lead to elevated adaptive antibiotic resistance. Here, it was described the antimicrobial and anti-biofilm activities of synthetic cationic peptides against K. pneumoniae strains susceptible and carbapenens resistant through in vitro and in vivo assays. By using static microplate assays, it was observed that the concentration of the peptides IDR-1018, DJK-5 and DJK-6 required to prevent biofilm formation by these clinical isolates was below the minimum inhibitory concentration (MIC) of these peptides. Flow cell experiments confirmed the anti-biofilm activity of the peptides against 2 day-old biofilms of different KPC producing isolates and, in some cases, the peptides induced biofilm cell death. Combinations of DJK-6 together with ??-lactam antibiotics, including the carbapenem meropenem, also prevented planktonic growth and biofilm formation of KPC producing strain 1825971. Interestingly, the peptide DJK-6 was able to enhance, by at least 16-fold, the ability of meropenem to eradicate pre-formed biofilms formed by this strain. Although, this combination between meropenem, DJK-6 was effective in vitro, any reduction of bacterial load was observed in murine lung model of infection. Similarly, the peptides HHC-10, IDR-1018 e IDR-1002 was effective in vitro, but ineffective in vivo. The results in vivo, using the peptides HHC-10 and IDR-1018 after infection were contrasting (significant reduction or non-reduction of bacterial load) between two models of lung infection. Others approaches using the peptides IDR-1018 prophylactically or the peptide IDR-1002 (effective in inhibit bacterial growth) before the induction of the infection, as a preventive approach or IDR-1002 (peptide that reduced the bacterial counts in vitro) after infection, also was unable to reduce the bacterial load in lungs of mice. Despite ineffective in acute model of lung infection, the use of cationic peptides, such DJK-6, to potentiate the activity of ??-lactams including meropenem, represents a promising strategy to prevent biofilm formation or eliminate existent biofilms both in medical devices and in body surfaces. / Klebsiella pneumoniae resistente a m??ltiplos antibi??ticos, que produzem a enzima K. pneumoniae carbapenemase (KPC), est??o se tornando uma causa comum de infec????es em centros de cuidado a sa??de. Al??m disso, K. pneumoniae pode desenvolver biofilmes multicelulares, que levam o aumento da resist??ncia adaptativa a antibi??ticos. Aqui foi descrito a atividade antimicrobiana e antibiofilme de pept??deos cati??nicos sint??ticos contra isolados de K. pneumoniae suscept??vel e resistente a carbapenens em ensaios in vitro e in vivo. Usando ensaios de microplaca est??tico, foi observado que a concentra????o dos pept??deos IDR-1018, DJK-5 e DJK-6, requerida para prevenir a forma????o de biofilmes de isolados resistentes foi abaixo da concentra????o inibit??ria m??nima (CIM) desses pept??deos. Experimentos de fluxo de c??lula confirmaram a atividade antibiofilme dos pept??deos contra biofilmes pr??-formados de diferentes isolados de K. pneumoniae produtores de KPC e, em alguns casos, os pept??deos induziram morte celular. Combina????es de DJK-6 e antibi??ticos ??-lact??micos, incluindo o carbapenem meropenem, tamb??m preveniram o crescimento planct??nico e a forma????o de biofilmes do isolado produtor de KPC 1825971. Interessantemente, o pept??deo DJK-6 foi capaz de aumentar, em pelo menos 16 vezes, a habilidade de meropenem erradicar biofilmes pr??-formados desse isolado. Embora, essa combina????o tenha sido efetiva in vitro, nenhuma redu????o da carga bacteriana foi observada em modelo murino de infec????o pulmonar por K. pneumoniae. Os resultados dos pept??deos HHC-10 e IDR-1018 (os quais inibiram o crescimento bacteriano in vitro a concentra????o que apresentou baixa citotoxicidade) foram contrastantes entre os dois modelos de infec????o pulmonar (significando redu????o ou n??o redu????o da carga bacteriana). Outras abordagens utilizando os pept??deos IDR-1018 profilaticamente ou o pept??deo IDR-1002 (efetivo em inibir o crescimento bacteriano in vitro) ap??s a infec????o, tamb??m foram incapazes de reduzir a carga bacteriana em pulm??es de camundongos. Apesar da inefetividade em modelo agudo de infec????o pulmonar, o uso de pept??deos cati??nicos, tal como DJK-6, para potencializar a atividade de ??-lact??micos, incluindo meropenem, representa uma estrat??gia promissora para prevenir a forma????o de biofilmes ou eliminar biofilmes existentes tanto em equipamentos m??dicos quanto em superf??cies do corpo.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-03-23T18:55:13Z No. of bitstreams: 1 2017 - Marcus Vinicius da Silva Buraslan.pdf: 2691930 bytes, checksum: ae2883ca17abc595becc4b32d48ece12 (MD5) / Made available in DSpace on 2018-03-23T18:55:13Z (GMT). No. of bitstreams: 1 2017 - Marcus Vinicius da Silva Buraslan.pdf: 2691930 bytes, checksum: ae2883ca17abc595becc4b32d48ece12 (MD5) Previous issue date: 2017-01-16 / The production of electronic waste presents itself as a major challenge by public, municipal, state and federal agencies of Brazil. The federal institutes are included in this scenario and should seek ways of collaborating in the reduction of production of this waste and find ways to make good use of them. In this sense, the environmental education allied with the artistic education can contribute in the reutilization of computer waste in the Institutes. The purpose of this research was to develop experiences at the Federal Institute of Education of Amapa/AP, where the electronic waste was used in an Environmental Education and Art perspective, adding knowledge of both areas in the objects produced by the students of the technical course of agriculture at the Porto Grande campus. We use the principles of participant survey, where those involved in research become agents of their reality transformation, in a critical way. Through lectures, speeches and art workshops, students were encouraged to produce objects of art that culminated in an exhibition for the community. We can conclude that the concepts of art can and should be added to the objectives of environmental education, so the society can mitigate the impacts caused to the environment by the increasing production of electronic rests. / A produ??o de res?duos de eletr?nicos se apresenta como um grande desafio a ser enfrentado pelos ?rg?os p?blicos municipais, estaduais e federais no Brasil. Os Institutos Federais est?o inseridos nesse cen?rio e devem buscar formas de colaborar para diminuir a produ??o desses res?duos e encontrar formas conscientes de aproveitamento dos mesmos. Nesse sentido, a Educa??o Ambiental aliada ? Educa??o Art?stica pode contribuir na reutiliza??o de res?duos de inform?tica nos Institutos. O objetivo da presente pesquisa foi o de desenvolver experi?ncias no Instituto Federal de Educa??o do Amap?/AP, onde os res?duos eletr?nicos foram utilizados numa perspectiva de Arte e Educa??o Ambiental, agregando conhecimentos de ambas as ?reas nos objetos produzidos por alunos do Curso de T?cnico em Agropecu?ria do campus Porto Grande. N?s utilizamos dos princ?pios da pesquisa participante, onde os envolvidos na pesquisa se tornam agentes de transforma??o da sua realidade, de forma cr?tica. Atrav?s de aulas expositivas, palestras e das oficinas de arte, os alunos foram estimulados a produzir objetos de arte que culminaram numa exposi??o para a comunidade. Podemos concluir que os conceitos de arte podem e devem ser agregados aos objetivos da Educa??o Ambiental de forma que a sociedade possa mitigar os impactos causados ao meio ambiente pela crescente produ??o de res?duos eletr?nicos.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-10-19T18:05:22Z No. of bitstreams: 1 2013 - Thadia Turon Costa da Silva.pdf: 3226072 bytes, checksum: 9173eea03b722347ce1269d2988d0a42 (MD5) / Made available in DSpace on 2018-10-19T18:05:22Z (GMT). No. of bitstreams: 1 2013 - Thadia Turon Costa da Silva.pdf: 3226072 bytes, checksum: 9173eea03b722347ce1269d2988d0a42 (MD5) Previous issue date: 2013-12-11 / FAPERJ / PIBEX (Programa Institucional de Bolsas de Extens?o, da Pr?-Reitoria de Extens?o - PR5 da Universidade Federal do Rio de Janeiro) / The objective of this study was to evaluate the different dimensions of organic vegetables quality proceeding from Family Agriculture and supplied to the School Food Programme in Petropolis. The evaluation was done based on centesimal composition, antioxidant activity, microbiological characteristics and pesticide residue. The organic vegetables evaluated were carrot (DaucuscarotaL.), broccoli (Brassicaoleraceae, var. it?lica), kale (Brassicaoleraceae, var. acephala) and cabbage (Brassicaoleraceae, var. capitata). The analysis performed were moisture determination, mineral fixed residues, lipid content, total proteins, carbohydrate, soluble and insoluble fibers, total soluble solids, total acidity, pH, ascorbic acid and pesticide residue. The antioxidant activity was based on the separation of DPPH radical and total phenolic content. Microbiologic analyses were conducted regarding sanitary indicators for food which were compared to standard values from the Brazilian legislation. As a complement, a dietary risk evaluation was conducted using the Maximum Theoretical Daily Intake (IDTM) and the Estimated Daily Intake. This evaluation was done through the medium intake for 10 year-old children, maximum limits of pesticide residue (LMR) and pesticide residue values detected on conventional agriculture food items. The results obtained were compared with the security limits (IDA) according to the medium weight of the studied population. The effectiveness of the antioxidant capacity of the vegetables was obtained in a decreasing order: broccoli, kale, cabbage and carrot. Regarding the microbiologic parameter, the vegetables presented a satisfactory sanitary quality. No pesticide residues were found above detection limits for both authorized and non-authorized organic vegetables producers. The organic vegetables analyzed follow the standards for quality and security demanded by the Law 1197/2009 which prioritizes food for the school programme. Regarding the dietary risk evaluation, orange, apple, tomato, rice and beans were the food items which showed, for children, the highest chronic intake risk for presenting IDTM higher than IDA for the following pesticides: dicofol, dimethoate, methidathion, pirimiphos-methyl, tetraconazol and carbaryl. Key-words: organic food, vegetables, food security / O presente estudo teve como objetivo avaliar as diferentes dimens?es da qualidade de hortali?as org?nicas provenientes da agricultura familiar fornecidas ? alimenta??o escolar do munic?pio de Petr?polis, a partir da avalia??o da composi??o centesimal, atividade antioxidante, caracter?sticas microbiol?gicas e res?duos de agrot?xicos. Foram avaliadas cenouras (DaucuscarotaL.), br?colis (Brassicaoleraceae, var. it?lica), couves (Brassicaoleraceae, var. acephala) e repolhos (Brassicaoleraceae, var. capitata) org?nicas atrav?s da determina??o da umidade, res?duos minerais fixos (cinzas), teor de lip?dios, prote?nas totais, carboidratos, fibras sol?veis e insol?veis, s?lidos sol?veis totais, acidez total, pH, ?cido asc?rbico e res?duos de agrot?xicos. A atividade antioxidante foi baseada no sequestro do radical DPPH e teor de fen?licos totais. Foram realizadas an?lise microbiol?gicas referentes aos indicadores higi?nico-sanit?rios de alimentos e comparadas aos padr?es da legisla??o brasileira. Em complementa??o, foi realizado estudo de avalia??o do o risco cr?nico da ingest?o de pesticidas pela dieta utilizando a Ingest?o Di?ria Te?rica M?xima (IDTM) e a Estimativa de Ingest?o Di?ria (EDI) a partir dos limites m?ximos de res?duos estabelecidos pela legisla??o brasileira e dados de consumo alimentar de crian?as de 10 anos, e valores de res?duos de agrot?xicos detectados em alimentos da agricultura convencional. Os resultados obtidos foram comparados com os limites de seguran?a (Dose di?ria aceit?vel - IDA) em fun??o do peso m?dio da popula??o estudada. Dentre as hortali?as analisadas, a efetividade na capacidade antioxidante foi obtida, em ordem decrescente, pelos br?colis, couves, repolhos e cenouras. Sob o par?metro microbiol?gico, as hortali?as avaliadas apresentaram qualidade higi?nico-sanit?ria satisfat?ria. N?o foram encontrados res?duos de agrot?xicos acima do limite de detec??o, tanto para os autorizados como para aqueles n?o autorizados nas culturas org?nicas analisadas. As hortali?as org?nicas estudadas atendem ao padr?o de qualidade e seguran?a exigidos pela Lei n?11947/2009 devendo ser priorizadas para a alimenta??o escolar. Na avalia??o do risco cr?nico da ingest?o de pesticidas pela dieta a laranja, ma??, tomate, arroz e feij?o foram os alimentos que mais contribu?ram para a ingest?o. Os compostos que apresentaram maior risco foram dicofol, dimetoato, metidationa, pirimif?s met?lico, tetraconazol e carbaril por apresentarem a IDTM maior que a IDA. Palavras-chave: alimentos org?nicos, vegetais, seguran?a alimentar.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-22T20:18:43Z No. of bitstreams: 1 MariaDeFatimaDantasESilva_TESE.pdf: 4790020 bytes, checksum: 76003788c17fef9645769d5d4a851b01 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-23T00:20:06Z (GMT) No. of bitstreams: 1 MariaDeFatimaDantasESilva_TESE.pdf: 4790020 bytes, checksum: 76003788c17fef9645769d5d4a851b01 (MD5) / Made available in DSpace on 2017-11-23T00:20:06Z (GMT). No. of bitstreams: 1 MariaDeFatimaDantasESilva_TESE.pdf: 4790020 bytes, checksum: 76003788c17fef9645769d5d4a851b01 (MD5) Previous issue date: 2017-09-01 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Assim como a maioria dos setores industriais, o setor cer?mico tamb?m sentiu a necessidade de desenvolvimento. Desta forma, a ind?stria cer?mica vem buscando cada vez mais novos pigmentos para a produ??o de pisos e revestimentos, visando atender a demanda de cer?micas para decora??o de ambientes, tanto dom?sticos quanto comerciais. Al?m disso, h? um grande interesse em desenvolver novos materiais que estejam de acordo com a preserva??o ambiental e que tamb?m sejam relativamente de baixo custo. O xisto retortado (XR) ? um rejeito proveniente da ind?stria do xisto que, armazenado de forma inadequada, pode causar danos ? sa?de e ao meio ambiente.O objetivo deste estudo ? avaliar a viabilidade desse material, xisto retortado puro e xisto retortado impregnado com metais, na obten??o de pigmentos que colorem, de forma est?vel, diversas matrizes cer?micas; tentando compreender quais par?metros influenciam na pigmenta??o dos esmaltes. Os pigmentos a base de XR foram preparados impregnando os metais por via ?mida e calcinados a 700 e 900?C. Em seguida foram caracterizados por Fluoresc?ncia de Raio X (FRX) An?lise termogravim?trica (Tg), Difra??o de raios X (DRX), Espectroscopia na regi?o do Infravermelho (FTIR), Microscopia eletr?nica de varredura (MEV/EED), Espectroscopia na regi?o do UV-Vis?vel e Colorimetria. Os resultados confirmam a viabilidade do uso do xisto como pigmento cer?mico al?m de ser obtido por um m?todo simples, o pigmento ? de baixo custo e reduz o impacto ambiental causado por esse rejeito. Os pigmentos possuem tonalidades marrom claro, vermelha e tons de cinza de acordo com a impregna??o e suas temperaturas de calcina??o, que se tornaram mais escuras em maior temperatura. / Like most of the industries sectors, the ceramic sector also felt the need of developing. In this way, the ceramic industry has been seeking to create more and more pigments for the production of floors and coatings, aiming to meet the demand of ceramics for the decoration of domestic and commercial environments. In addition to that, there is a great interest in developing new materials that are in accordance with the environmental preservation that are also relatively low-cost. Retorted shale (RS) is a waste from the shale industry that may harm health and the environment if improperly stored. The aim of this study is to evaluate the viability of the materials, pure RS and metal-impregnated RS, to obtain pigments that are stable in several ceramic matrices, as well as to try to understand which parameters influence the pigmentation of the enamels. The RS-based pigments were prepared by wet impregnating of the metals and calcined at 700 and 900?C. After that, the materials were characterized by X-ray Fluorescence (XRF), Thermogravimetric analysis (Tg), X-ray diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM /EDS), UV-Visible Spectroscopy and Colorimetry. The results confirm the feasibility of using RS as a ceramic pigment obtained by a simple method, low-cost and that reduces the environmental impacts caused by such waste. The pigments are light brown, red and shades of gray, according to the impregnation and calcination temperatures, which get darker at higher temperatures.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-29T20:24:19Z No. of bitstreams: 1 JoseDenilsonDePaulaAraujo_DISSERT.pdf: 884420 bytes, checksum: 356fafd728157445de94d84ed5a369f3 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-09-06T00:01:51Z (GMT) No. of bitstreams: 1 JoseDenilsonDePaulaAraujo_DISSERT.pdf: 884420 bytes, checksum: 356fafd728157445de94d84ed5a369f3 (MD5) / Made available in DSpace on 2016-09-06T00:01:51Z (GMT). No. of bitstreams: 1 JoseDenilsonDePaulaAraujo_DISSERT.pdf: 884420 bytes, checksum: 356fafd728157445de94d84ed5a369f3 (MD5) Previous issue date: 2014-12-19 / Biocombust?veis s?o um foco de discuss?o, ao que se trata de energias renov?veis. Quanto a esse ponto, atualmente discutisse a utiliza??o de zonas ?ridas para produ??o de biocombust?veis derivados de esp?cies oleaginosas resistentes ?s condi??es de aridez. A Jatropha curcas L. tem sido indicada como uma esp?cie potencial para esse tipo de utiliza??o, apontada pela literatura como resistente em condi??es desfavor?veis: seca e salinidade. Todavia, pouco ? descrito sobre sua resist?ncia a altas temperaturas e secas severas, principalmente sobre a sinergia de estresses combinados, cen?rio t?pico de regi?es semi?ridas. Este trabalho visa portanto avaliar os efeitos da temperatura sobre a J. curcas em condi??es de seca. O estresse h?drico foi aplicado utilizando duas concentra??es de PEG6000 dilu?das em solu??o hidrop?nica, induzindo potencial h?drico de -0,3 e -0,7 MPa. J? o estresse t?rmico foi conduzido em B.O.D. ? 40?C. Ap?s aplica??o dos estresses, o material vegetal foi coletado para avalia??o dos indicadores de estresse como conte?do relativo de ?gua (CRA) e dano de membrana (DM), al?m das determina??es bioqu?micas de prote?nas, amino?cidos totais (AALT), prolina (PRO) e glicina beta?na (GB), a??cares sol?veis totais (AST) e amido. Os resultados mostraram que o CRA pouco se altera, em condi??es de estresse e DM foi menor sob estresse t?rmico. Os solutos AALT, PRO e amido tiveram concentra??es mais significativas em folhas, enquanto que prote?nas, GB e AST foram mais significativas nas ra?zes. Quanto ? observa??o dos efeitos provocados pelo estresse h?drico, este trabalho fez compara??es a resultados semelhantes obtidos em outros estudos, refor?ando afirma??es sobre a efici?ncia das respostas da J. curcas em condi??es de seca. Todavia as plantas se mostraram mais suscept?veis ao estresse t?rmico, embora, quando em estresses combinados as respostas tenderam ao aumento em compara??o ao estresse t?rmico isolado. No geral, estes resultados abrem espa?o para que novos estudos sejam realizados a fim de testar os efeitos dos estresses combinados sobre a J. curcas e quais respostas a planta pode apresentara sob estas condi??es. / Biofuels are a focus of discussion when it comes to renewable energy. On this point, actually disc uss the use of arid zones for production of biofuels derived from oil plant species resistant to arid conditions. Jatropha curcas L. has been indicated as a potential species for this application, because it resistance to unfavorable conditions as: drought and salinity. However, a few studies have been described about its resistance to high temperatures and severe droughts, especially on the synergy of combined stresses, typical of semiarid lands. This study aims to evaluate the temperature effects of J. curcas on dry conditions. Water stress was caused using two concentrations of PEG6000 diluted in hydroponic solution, inducing water potentials of - 0.3 and - 0.7 MPa, while the heat stress was conducted in growth chamber at 40?C. After applying the stress, the plant material was collected for evaluation of stress indicators such as relative water content (RWC), membrane damage (MD) and absolute growth rate (AGR), and the biochemical determinations of proteins, total amino acids (TFAA), proline (PRO), glycine betaine (GB), total soluble sugars (TSA) and starch. The results showed that the RWC few changes in stress conditions and MD was lower under heat stress, probably due to the contribution of solutes such as protein and GB. Solutes TFAA, PRO and starch had more significant concentrations in leaves, while proteins, GB and TSA were more significant in the roots. TFAA and PRO were solutes with more significant responses on leaves, mainly in severe drought under heat stress. GB had an increase in the concentrations both in leaves and in roots, when under to drought and heat stress. Starch concentrations was reduced, which may be a reflex the reduction of AGR of the seedlings. The data suggest that J. curcas is able to withstand the effects of droughts tress, considering fewer changes of the CRA under the studied conditions. Overall the seedlings were more sensitive to heat stress. However, when combined the both drought and heat stresses, the results showed an increasing trend in relation to just heats tress.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-17T11:31:11Z No. of bitstreams: 2 edilson_almeida.pdf: 627105 bytes, checksum: a0b76b2072690c3740d1f97384c5ba3b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-17T11:31:45Z (GMT) No. of bitstreams: 2 edilson_almeida.pdf: 627105 bytes, checksum: a0b76b2072690c3740d1f97384c5ba3b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-17T11:31:45Z (GMT). No. of bitstreams: 2 edilson_almeida.pdf: 627105 bytes, checksum: a0b76b2072690c3740d1f97384c5ba3b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2012 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Objetivou-se com este estudo avaliar o uso de aditivos digestivos (enzimas) e equilibradores da microbiota intestinal (?cidos org?nicos, extratos vegetais, probi?ticos e simbi?ticos) sob os par?metros de desempenho (ganho em peso, consumo de ra??o, convers?o alimentar, viabilidade e ?ndice de efici?ncia europeu), rendimento de carca?a e cortes, qualidade da carne e empenamento de frangos de corte criados com o uso de cama de avi?rio reutilizada. Foram utilizadas 552 aves sexadas, da linhagem Hubbard, com um dia de idade, distribu?das segundo um delineamento inteiramente casualisado com seis tratamentos (controle negativo: dieta controle (DC) sem aditivos; DC + extrato vegetal (alho + or?gano); DC + complexo enzim?tico (protease, amilase e celulase); DC + probi?tico; DC + simbi?tico e DC + ?cidos org?nicos (ac?tico, f?rmico e propi?nico), com quatro repeti??es (duas de macho e duas de f?meas) de 23 aves cada. Os par?metros de desempenho das aves foram avaliados de 1 a 7, 1 a 21, 1 a 35 e 1 a 42 dias de idade. Aos 42 dias, foram abatidas 3 aves de cada parcela experimental para avalia??o do rendimento de carca?a e cortes e dos par?metros de qualidade da carne do peito (capacidade de reten??o de ?gua, valor de pH, perda de peso por cozimento, maciez objetiva e colora??o). O empenamento das aves foi avaliado aos 28 e 35 dias de idade. Houve diferen?as das dietas sobre o ganho em peso das aves de 1 a 21 e de 1 a 35 dias, e as aves suplementadas com a dieta de extrato vegetal apresentaram maior ganho em peso que as aves suplementadas com as dietas de probi?tico e simbi?tico. Durante o per?odo total de cria??o, n?o houve efeito das dietas sobre o rendimento de carca?a e cortes, na qualidade da carne e no empenamento das aves. O sexo afetou o desempenho, rendimento de peito e carne do peito e o empenamento das aves, e os machos apresentaram melhores resultados de desempenho. A viabilidade foi melhor para as f?meas, que tamb?m apresentaram maiores rendimentos de peito e carne do peito e melhor empenamento. Os dados verificados permitem concluir que o uso dos aditivos digestivos e equilibradores da microbiota intestinal n?o afetam o desempenho, o rendimento de carca?a e cortes, a qualidade da carne e o empenamento. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of this study to evaluate the use of digestive additives (enzymes) and balancing the intestinal microbiota (organic acids, plant extracts, probiotics and symbiotics) on performance parameters (weight gain, feed intake, feed conversion, viabibility and european efficiency index), carcass yield and cuts, meat quality and feathering of broilers, created with the use of reused litter. Five hundred fifty-two sexed birds were used, strain Hubbard, with one day of age, distributed according to a completely randomized design with six treatments (negative control: control diet (CD) without additives; CD + plant extract (garlic + oregano); CD + complex enzyme (protease, amylase and cellulase); CD + probiotic; CD + symbiotic and CD + organic acids (acetic, formic and propionic acids) with four replications (two male and two females) of 23 birds each. Performance parameters were evaluated 1-7, 1-21, 1-35 and 1-42 day-old birds. At 42 days, three birds were slaughtered each plot for evaluation of carcass yield and cuts and parameters of meat quality of breast (water retention capacity, Ph value, cooking weight loss, objective tenderness and coloring). The feathering of the birds was evaluated at 28 and 35 days old. There were differences of diets on weight gain of broilers 1-21 and 1 to 35 days, and broilers supplemented diet with extract plant showed higher weight gain than broilers supplemented diets with probiotic and symbiotic. During the whole period of creation, there was no effect of diets on carcass yield and cuts, meat quality and feather covering. The sex affected performance, breast meat yield and breast meat and feather covering, and the males showed better performance results. The viability, which was better for females, which also showed higher values of breast and breast meat and better bending. Data verified the conclusion that the use of additives and digestive balancing the intestinal microbiota does not affect performance, yield carcass and cuts, meat quality and warping.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T12:22:40Z No. of bitstreams: 2 graciele_araujo_oliveira.PDF: 736032 bytes, checksum: 8f4728012526a950d2e16deec5ce1e59 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T12:23:00Z (GMT) No. of bitstreams: 2 graciele_araujo_oliveira.PDF: 736032 bytes, checksum: 8f4728012526a950d2e16deec5ce1e59 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-18T12:23:00Z (GMT). No. of bitstreams: 2 graciele_araujo_oliveira.PDF: 736032 bytes, checksum: 8f4728012526a950d2e16deec5ce1e59 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2010 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Este trabalho objetivou avaliar o efeito de diferentes aditivos alternativos (alho, saponina, probi?ticos, prebi?ticos, ?cidos org?nicos e complexos enzim?ticos), em substitui??o aos antibi?ticos, sobre os par?metros de desempenho, rendimento de carca?a e cortes, custo de produ??o, empenamento e qualidade da carne de frangos de corte. Foram utilizados 744 pintainhos, sexados, com um dia de idade, da linhagem Cobb 500. As aves foram distribu?das segundo um delineamento inteiramente casualizado com seis tratamentos (T1: ra??o basal (RB) + vacina de coccidiose (VC); T2: RB + antibi?tico + anticoccidiano; T3: RB + ?cidos org?nicos + VC; T4: RB + simbi?tico + VC; T5: RB + complexo enzim?tico + VC eT6: RB + extratos vegetais + VC) com quatro repeti??es de 31 aves. Os tratamentos influenciaram os par?metros de desempenho aos 7, 21 e 35 dias de idade das aves, mas n?o afetaram o desempenho quando considerado o per?odo total de cria??o. O uso de aditivos alternativos aumentou o custo de produ??o, sendo que as dietas contendo simbi?ticos, complexo enzim?tico e extratos vegetais apresentaram maior custo. O empenamento n?o foi afetado pelos tratamentos. O rendimento de carca?a e cortes e as caracter?sticas de qualidade da carne n?o foram afetados pelos tratamentos avaliados. Com base nos resultados verificados, pode-se concluir que a substitui??o dos antibi?ticos por aditivos alternativos na alimenta??o de frangos de corte, n?o afeta o desempenho final das aves abatidas com 42 dias e n?o alteram o rendimento de carca?a e cortes e a qualidade da carne das aves, mas onera os custos em at? 15%, quando se utiliza aditivos nas dietas. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT The antibiotics used in animal food to promote growth have been gradually banished due to the possible risk of cross-resistance to drugs used to human therapy. As a result, the search for food without these products is increasing. This study aimed to evaluate the effect of different alternative additives (garlic, saponine, probiotics, prebiotics, and enzymatic complex and organic acids) to substitute antibiotics on parameters of performance, carcass and cuts yield, production cost, feathering and quality of broilers? meat. A total of 744 one day old sexed broilers chicks Cobb 500 line were distributed in 6 treatments (T1: basal diet (BD) + coccidiosis vaccine (CV); T2: BD + antibiotic + anticoccidian; T3: BD + organic acid + CV; T4: BD + symbiotic + CV; T5: BD + enzymatic complex + CV; T6: BD + vegetal extract + CV) under a completely randomized design, with 4 replicates and 31 chicks per experimental unit.Treatments influenced performance at 7, 21 and 35 days old, but they did not affect it when considered the total breeding period. Additives use increased production cost, and diets with symbiotics, enzymatic complex and vegetal extract showed higher cost. Feathering, carcass and cuts yield and meat quality characteristics were not affected by the treatments. Results conclude that substituting antibiotics to additives on broilers food cause performance reduction on feeding initial phase, but it did not affect the final performance, nor carcass and cuts yield or meat quality of chicken slaughtered at 42 days old, but it burdens costs up to 15% when additives are used in diets.

Submitted by Nivaldo Melo (nivaldo.melo@ufvjm.edu.br) on 2016-10-11T15:59:27Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) nykolas_carvalho_schiavon.pdf: 680531 bytes, checksum: 657731b79e9a7d7463b7f606d0966018 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2016-10-11T19:34:59Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) nykolas_carvalho_schiavon.pdf: 680531 bytes, checksum: 657731b79e9a7d7463b7f606d0966018 (MD5) / Made available in DSpace on 2016-10-11T19:34:59Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) nykolas_carvalho_schiavon.pdf: 680531 bytes, checksum: 657731b79e9a7d7463b7f606d0966018 (MD5) Previous issue date: 2015 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / A adi??o de ?cido c?trico ao substrato pode influenciar a disponibilidade de f?sforo para as plantas de caf? e possibilitar melhor crescimento e nutri??o. Al?m disso, o crescimento e a nutri??o possivelmente sofrer?o influencia da cultivar e do parcelamento de dose do ?cido c?trico. Por isso, objetivou-se avaliar o crescimento e ac?mulo de nutrientes por mudas de caf? (Coffea arabicaL.) de tr?s cultivares: Catua? Vermelho IAC 99, Mundo Novo IAC 379- 19 e Oeiras MG 6851, em substrato tratado com ?cido c?trico e diferentes doses de P2O5. Buscou-se tamb?m verificar o efeito do parcelamento do ?cido c?trico no crescimento e ac?mulo de nutrientes, pelas mudas. Foram instalados dois experimentos, delineados em cinco blocos e esquema fatorial. No primeiro, foram avaliadas as tr?s cultuvares de caf? e quatro doses de P2O5 (0, 450, 900 e 1.800 g m-3) em solo tratato com ?cido c?trico anidro (0,5 mg dm3). No segundo experimento, os fatores foram compostos pelas quatro doses de P2O5 e a dosagem de ?cido c?trico dividida em quatro parcelamentos. As plantas foram submetidas aos tratamentos a partir da emiss?o das primeiras folhas cotiledonares as avalia??es ocorreram ap?s 180 dias (no primeiro experimento) e ap?s 120 dias (no segundo experimento). Foram avaliadas vari?veis de crescimento, ac?mulo de mat?ria seca e nutrientes pelas plantas de caf?. Como resultados verificou-se que as doses de P2O5, em substrato tratado com ?cido c?trico, influenciaram o crescimento das mudas de caf? das cultivares estudadas. O maior crescimento, ac?mulo de biomassa e ac?mulo m?ximo de nutrientes foram na dose de 900 g m-3 de P2O5. Com rela??o ao parcelamento do ?cido c?trico, foi observado melhor crescimento de mudas de caf? quando a dosagem foi parcelada em tr?s e quatro vezes. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2015. / The addition of citric acid to the substrate can influence the availability of phosphorus for plants and coffee allow better growth and nutrition. Additionally, the growth and nutrition possibly suffer influence of genotype and citric acid dose installment. Therefore, this study aimed to evaluate the growth and accumulation of nutrients in coffee seedlings (Coffea arabicaL.) Of three cultivars Catua? Vermelho IAC 99, Mundo Novo IAC 379-19 and Oeiras MG 6851, in substrate treated with citric acid and different of P2O5. It also sought to determine the effect of citric acid installment in the growth and accumulation of nutrients by the plants. Two experiments, outlined in five blocks and a factorial design were installed. At first, they evaluated the three coffee cultuvares P2O5 four doses (0, 450, 900 and 1800 g m-3) tratato soil with anhydrous citric acid (0,5 mg dm-3). In the second experiment, the factors were composed by four doses of P2O5 and citric acid dosage divided into four installments. The plants were subjected to treatment from the issuance of the first cotyledon leaves the evaluations occurred after 180 days (the first experiment) and 120 days (the second experiment). Growth variables were evaluated, dry matter accumulation and nutrients by coffee plants. As a result it was found that doses of P2O5, substrate treated with citric acid, influenced the growth of coffee seedlings of cultivars. The greatest growth, biomass accumulation and maximum nutrient accumulation were at a dose of 900 g m-3 of P2O5. Regarding the installment of citric acid, better growth of coffee seedlings was observed when the dosage was split into three four times.

Submitted by Raniere Barreto (raniere.barros@ufvjm.edu.br) on 2018-04-12T16:38:17Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) paulo_geovane_ramalho_pinheiro.pdf: 16283773 bytes, checksum: 3b14af12b1f3e2c447d8903e47fc9051 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-04-20T13:51:28Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) paulo_geovane_ramalho_pinheiro.pdf: 16283773 bytes, checksum: 3b14af12b1f3e2c447d8903e47fc9051 (MD5) / Made available in DSpace on 2018-04-20T13:51:28Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) paulo_geovane_ramalho_pinheiro.pdf: 16283773 bytes, checksum: 3b14af12b1f3e2c447d8903e47fc9051 (MD5) Previous issue date: 2017 / Nesta disserta??o, desenvolveu-se um trabalho com jogos virtuais, utilizando parcialmente a Engenharia Did?tica, por se tratar de uma metodologia de pesquisa que valoriza o ambiente onde ocorre o processo de ensino-aprendizagem. O principal objetivo foi agregar uma nova ferramenta de trabalho no ensino de Matem?tica, pois prop?e-se ao professor do ensino m?dio adpatar ou criar jogos eletr?nicos, com o uso do programa GeoGebra, para uma maior participa??o dos discentes na busca pelo protagonismo de seu aprendizado. O foco dos jogos aqui trabalhados foi: Plano Cartesiano, Opera??es com n?meros inteiros, Gr?fico de fun??o quadr?tica e S?lidos geom?tricos. Esses conte?dos encontram-se na Matriz de refer?ncia de Matem?tica do estado de MG e para pr?tica dos mesmos, foram realizadas interven??es did?ticas em laborat?rio computacional da Escola Estadual Chaves Ribeiro, localizada no munic?pio de Itaobim, onde os estudantes competiram entre si na execu??o de jogos virtuais. Ademais, para an?lise deste trabalho, empregou-se question?rios cujos resultados serviram para confrontar o conhecimento pr?vio e o conhecimento dos estudantes adquirido ap?s o uso dos jogos. Ap?s a an?lise dos resultados obtidos, pode-se constatar que a pr?tica de jogos virtuais p?de colaborar na melhora do processo de ensino-aprendizagem, como tamb?m dinamizou o ambiente de ensino, tornando as aulas mais atraentes. / Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o Matem?tica, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / In this dissertation, a work was developed with virtual games, partially using Didactic Engineering, because it is a research methodology that values the environment where the teaching-learning process occurs. The main objective was to add a new working tool in the teaching of Mathematics, because it is proposed to the high school teacher to adapt or create electronic games, using the GeoGebra program, for a greater participation of the students in the search for the protagonism of their learning . The focus of the games worked here was: Cartesian plane, Operations with integers, Quadratic function graph and Geometric solids. These contents are found in the Mathematical Reference Mathematics of the state of Minas Gerais and for their practice, didactic interventions were carried out in a computer lab of the Chaves Ribeiro State School, located in the municipality of Itaobim, where students competed with each other in the execution of games virtual communities. In addition, to analyze this work, questionnaires were used, whose results served to confront the previous knowledge and knowledge of the students acquired after the use of the games. After analyzing the results obtained, it can be seen that the practice of virtual games could help improve the teaching-learning process, as well as dynamized the teaching environment, making classes more attractive.

ALVES, Ana paula Melo. Vermiculitas tratadas quimicamente na obten??o de s?lidos microporosos como precursores para h?bridos inorg?nico-org?nicos com aplica??es adsortivas. 2009. 124 f. Tese (Doutorado em Quimica) - Centro de Ci?ncias Exatas e da Natureza, Universidade Federal da Para?ba, Jo?o Pessoa, PB, 2009. / Submitted by Sonia Leite (sonia@geologia.ufrn.br) on 2010-09-27T16:18:21Z No. of bitstreams: 2 2000Tese_AnaPaulaMAlves.pdf: 2643720 bytes, checksum: 1e6e5bae6c1a2fb7113b073819b6445a (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) / Rejected by clediane guedes(clediane@bczm.ufrn.br), reason: ALVES dever? est? em mai?sculo on 2010-09-27T18:01:29Z (GMT) / Submitted by Sonia Leite (sonia@geologia.ufrn.br) on 2010-09-27T18:28:33Z No. of bitstreams: 2 2000Tese_AnaPaulaMAlves.pdf: 2643720 bytes, checksum: 1e6e5bae6c1a2fb7113b073819b6445a (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) / Approved for entry into archive by clediane guedes(clediane@bczm.ufrn.br) on 2010-09-30T12:05:26Z (GMT) No. of bitstreams: 2 2000Tese_AnaPaulaMAlves.pdf: 2643720 bytes, checksum: 1e6e5bae6c1a2fb7113b073819b6445a (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) / Made available in DSpace on 2010-09-30T12:05:26Z (GMT). No. of bitstreams: 2 2000Tese_AnaPaulaMAlves.pdf: 2643720 bytes, checksum: 1e6e5bae6c1a2fb7113b073819b6445a (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) / A lixivia??o seletiva de argilominerais ? um m?todo importante na prepara??o de silicatos porosos constituindo-se em uma rota simples, efetiva e de baixo custo. Neste estudo a vermiculita foi submetida a tratamento ?cido com acido n?trico nas concentra??es 1, 2, 3 e 4 mol dm-3, originando os s?lidos precursores denominados VacX (x=1 a 4), respectivamente. As matrizes ativadas e a vermiculita reagiram covalentemente com os organosilanos aminopropil-, propiletilenodiamino-,propildietilenotriamino- e glicid?xipropiltrimetoxissilano (GPTS) atrav?s dos grupos metoxilas do silano e as hidroxilas da superf?cie das matrizes. O h?brido Vac3G, derivado da silaniza??o do Vac3 com GPTS, sofreu rea??es subseq?entes com as diaminas etil, propil, butildiamina e 2-aminopiridina, possibilitando a entrada de novos centros b?sicos. Os diversos s?lidos foram caracterizados por an?lise qu?mica, espectroscopia na regi?o do IV, DRX, RMN 29Si e 27Al, MEV, volume de poro e ?rea superficial. A lixivia??o da vermiculita s?dica originou s?lidos porosos reestruturados com elevadas ?reas superficiais cujos valores foram 133, 334, 673 e 575 m2 g-1 para os s?lidos Vac1, Vac2, Vac3 e Vac4,respectivamente. Independentemente do s?lido, observou-se que ? medida que a lixivia??o se torna mais acentuada, houve um aumento na reatividade das matrizes ativadas em rela??o ? vermiculita original, sendo a matriz Vac3 a mais reativa diante das rea??es aqui propostas. Todos os s?lidos modificados apresentaram altos teores de grupos org?nicos incorporados. A s?rie de vermiculitas modificadas com o grupo aminopropil foi utilizada para a adsor??o de c?tions divalentes de cobre e n?quel em solu??o aquosa, mostrando maior afinidade para os ?ons de Ni2+(aq) do que para Cu2+(aq) como ilustrado pelos valores Nf de 2,97 e 1,23 mmol g-1, respectivamente. Os s?lidos porosos argilosos derivados de tratamento ?cido da vermiculita s?o substratos potenciais para imobiliza??o de silanos apresentando importantes aplica??es como adosrventes para esp?cies poluentes como metais pesados. ABSTRACT: The selective leaching of clay minerals is an important method in the preparation of porous silicates presenting as a simple, effective and low cost route. In this study, vermiculite was submitted to acid treatment at concentrations 1, 2, 3, and 4 mol dm-3, resulting the precursor solids named as VacX (x=1 a 4), respectively. The lixiviated matrices and vermiculite reacted covalently with the organosilanes aminepropyl-, propyletilenediamine-, ropyldietilenetriamine- and glycidoxypropyltrimethoxisilane (GPTS). The hybrid Vac3G, derived from silanization reaction between Vac3 and GPTS, was submitted to subsequent reactions with ethyl, propyl, butyldiamines and 2- aminepiridine resulting in the entrance of new basic centres. The products were characterized by chemical analysis, infrared spectroscopy, X-ray diffraction, 29Si and 27Al NMR in solid state, SEM, and pore volume and surface area determination. The lixiviation of sodic vermiculite originated the restructured porous solids with high superficial area showing the values133, 334, 673 e 575 m2 g-1 for VacX where X = 1,2,3,4, respectively. These solids and sodic vermiculite reacted covalently with each organosilane through methoxyl groups of silane and the hydroxyl surface of matrices. Independently of solid, it was observed that the lixiviation favored the reactivity of activated matrices compared with sodic vermiculite, showing the Vac3 as more reactive comparing with others solids. All modified solids presented high nitrogen content showing the values of 6,31 %. The set of modified vermiculites containing aminepropyl group was applied as adsorbent for divalent cations as copper and nickel in aqueous solution. These solid showed highest affinity for Ni2+ than Cu2+ ions as illustrated by Nf values of 2,97 and 1,23 mmol g-1, respectively. Clay porous solids obtained of leaching treatment of vermiculite are potential substrates for grafting of silanes showing important applications as adsorbents for contaminant species as heavy metals