Made available in DSpace on 2015-04-14T14:52:34Z (GMT). No. of bitstreams: 1 460074.pdf: 2456142 bytes, checksum: 93b71f804fb8ba237257a45251a5b2a5 (MD5) Previous issue date: 2014-03-31 / In the last decades, Information Technology (IT) gained strategic importance for organizations as it acts in several areas of business and work processes. Therefore, IT utilization growth has led to difficulties to deliver all requirements imposed by the market s changes speed. Thus, the care of these opportunities depends on the outsourced IT teams working side-by-side with business experts of the contracting organization. In other hand, despite several decades of experience using this model, outsourced IT projects are still failing at a high rate. The objective was to identify the influences of Theory of Agency and Theory of Group Development in outsourced IT projects results. Based on the literature review a conceptual model comprising three factors from each theory with a total number of 29 variables was proposed. The study used a qualitative phase to develop the survey s instrument, followed by the quantitative phase comprised by the exploratory factor analysis (EFA) and confirmatory (CFA) to validate the model. The survey was sent out in September 2013 with the purpose of obtaining the data collection. In total 363 valid responses were collected from professionals from different countries, but mostly from Brazil (74 %). The EFA results exceeded the values necessary to validate the integration of the two theories components in one model. Initially, the CFA tested the measurement model, which was refined in three interactions and the results showed a good fit that also confirmed the combination of the two theories in the same model. The discriminant validity has been confirmed, as well as the validity and nomological expression. However, the convergent validity was not validated. Despite the inconclusive results of the measurement model, a structural model was tested and it has achieved all necessary values for a good fit. Thus, the overall objective was achieved with the identification of the influence of TA and TDG in results IT outsourcing projects. The analysis of the joint influence of the two theories on the results of projects was partially confirmed by the CFA, yet was not possible to complete statistical proof of the existence of a theoretical model due to the failure of convergent validity. Statistical analysis allowed the positive assessment of the proposals and the responses from the survey supported the assertion that the variables TA and TDG should be considered together for the achievement of better results in outsourced IT projects. / Nas ?ltimas d?cadas a Tecnologia da Informa??o (TI) ganhou import?ncia estrat?gica para as organiza??es por atuar nas mais diversas ?reas de neg?cios e processos de trabalho. Este crescimento do uso da TI levou a dificuldades em atender a todas as necessidades na velocidade imposta pelo mercado. Assim, o atendimento a estas oportunidades passou a depender do trabalho desenvolvido por equipes de profissionais de TI terceirizados em conjunto com os especialistas de neg?cio da organiza??o contratante. Apesar da experi?ncia de v?rias d?cadas utilizando este modelo, os projetos terceirizados de TI continuam falhando. O objetivo deste trabalho ? de identificar a influ?ncia conjunta da Teoria da Agencia (TA) e da Teoria de Desenvolvimento de Grupos (TDG) nos resultados de projetos de terceiriza??o de TI. Baseado na revis?o da literatura foi proposto um modelo conceitual composto por tr?s fatores oriundos de cada teoria com um n?mero total de 28 vari?veis. O trabalho utilizou-se de uma etapa qualitativa para o desenvolvimento do instrumento de pesquisa, seguido de outra fase quantitativa com a an?lise fatorial explorat?ria (EFA) e confirmat?ria (CFA) para estudo do modelo. A coleta de dados foi elaborada por meio de pesquisa do tipo survey foi enviada em setembro de 2013. No total foram obtidas 363 respostas v?lidas, coletadas a partir de profissionais de diversos pa?ses, sendo a maioria brasileiros (74%). A EFA resultou em um modelo que superou os valores necess?rios para validar a integra??o dos componentes das duas teorias. A CFA testou inicialmente o modelo de mensura??o, o qual foi refinado em tr?s intera??es e o resultado mostrou um ajuste que validou o resultado da combina??o das duas teorias. A validade discriminante foi confirmada, assim como a validade nomol?gica e a de express?o. No entanto, a validade convergente n?o foi validada. Apesar dos resultados n?o conclusivos do modelo de mensura??o, foi testado um modelo estrutural, o qual atingiu todos os valores limites de ajuste. Assim, o objetivo geral do trabalho foi atingido com a identifica??o da influ?ncia da TA e da TDG nos resultados de projetos de terceiriza??o de TI. A an?lise da influ?ncia conjunta das duas teorias sobre os resultados de projetos foi confirmada parcialmente pela CFA, pois n?o foi poss?vel a completa comprova??o estat?stica da exist?ncia de um modelo te?rico em fun??o da falha da validade convergente. Contudo, a an?lise estat?stica permitiu a avalia??o positiva das proposi??es e as respostas obtidas pela survey suportaram a afirma??o de que as vari?veis da TA e da TDG devem ser consideradas em conjunto para o atingimento de melhores resultados em projetos de TI terceirizados.

No description available.

Les Oligosaccharides soluble (OS) sont essentiellement générés durant le processus de dégradation des N-glycoprotéines nouvellement synthétisées et mal conformées (ERAD) et durant la voie « turn-over » des glycoprotéines matures. Dans le but de déterminer si la modification post-traductionnelle O-GlcNAc est effectivement impliquée dans le processus de dégradation des N-glycoprotéines, nous avons analysé par spectrométrie de masse les OS provenant des cellules CHO après traitement par l’inhibiteur PUGNAc. Le PUGNAc ou « O-(2-acetamido-2-deoxy-D-glucopyranosylidene) amino-N-phenylcarbanate » est un inhibiteur puissant de l’O-GlcNAcase (OGA) qui catalyse l’hydrolyse du résidu O-GlcNAc des résidus sérine et thréonine des protéines O-GlcNAcylées.L’analyse par spectrométrie de masse révèle l’apparition d’une population d’OS de structures anormaux dans les cellules CHO suite au traitement par le PUGNAc. Cette population a été identifiée comme ayant des structures possédant des résidus GlcNAc au niveau de leur extrémité non-réductrice issues d’une dégradation lysosomale incomplète des glycoprotéines. Contrairement au PUGNAc, le NButGT, un autre inhibiteur de l’OGA, n’aboutit pas à l’apparition de cette population. Ainsi, Nous avons démontré que ces structures s’accumulent exclusivement dans la fraction membranaire conséquence de l’inhibition des β-hexosaminidases lysosomaux par le PUGNAc. Notre étude avait permis, d’un part, de mettre en évidence la capacité du PUGNAc de mimer une maladie de surcharge lysosomale et, d’autre part, de montrer un autre aspect des effets indésirables induits par le PUGNAc et qui nécessite d’être pris en considération lors de l’utilisation de cet inhibiteur. / Free oligosaccharides (fOS) are generated as a result of glycoproteins catabolism that occurs in two principal distinct pathways: the endoplasmic reticulum-associated degradation (ERAD) of misfolded newly synthesized N-glycoproteins and the mature N-glycoproteins turnover pathway. We analyzed fOS by Mass spectrometry in PUGNAc CHO treated cells in order to investigate whether O-GlcNAc modified proteins were involved in N-glycoprotein degradation process. The O-(2-acetamido-2-deoxy-D-glucopyranosylidene) amino-N-phenylcarbanate (PUGNAc) is a potent inhibitor of the O-GlcNAcase (OGA) catalyzing the cleavage of β-O-linked 2-acetamido-2-deoxy-beta-D-glucopyranoside (O-GlcNAc) from serine and threonine residues of post-translationally modified proteins. Mass spectrometry (MS) analysis revealed the appearance of an unusual population of fOS after PUGNAc treatment. The structures representing this population have been identified as containing non-reducing end GlcNAc residues resulting from incomplete lysosomal fOS degradation. Only observed after PUGNAc treatment, the NButGt, another OGA inhibitor, did not lead to the appearance of the population. These structures have clearly been shown to accumulate in membrane fractions as the consequence of lysosomal β-hexosaminidases inhibition by PUGNAc. As Lysosomal Storage Disorders (LSD) are characterized by the accumulation of fOS in various tissues, our study evokes that PUGNAc mimics a LSD and shows another off target effects that needs to be taken into account in the use of this drug.

Submitted by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-08-18T13:35:46Z No. of bitstreams: 1 GleiceAmeliaGomesLemosDissertacao2017.pdf: 2274951 bytes, checksum: dd565d57b19773f728f129580f611256 (MD5) / Approved for entry into archive by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-08-18T13:35:52Z (GMT) No. of bitstreams: 1 GleiceAmeliaGomesLemosDissertacao2017.pdf: 2274951 bytes, checksum: dd565d57b19773f728f129580f611256 (MD5) / Made available in DSpace on 2017-08-18T13:35:52Z (GMT). No. of bitstreams: 1 GleiceAmeliaGomesLemosDissertacao2017.pdf: 2274951 bytes, checksum: dd565d57b19773f728f129580f611256 (MD5) Previous issue date: 2017-03-23 / This dissertation aimed to analyze the meanings of the digital discourse of high school young students of a Public School from Federal District, Brazil. Having as theoretical reference studies on education, technology and youth in which the thoughts of Zigmunt Bauman stand out; Hannah Arendt, Michel Foucault, Pierre L??vy, among other researchers. The methodological device was the Discourse Analysis of the French school; And the corpus of analysis were two Facebook Pages, an online social network. The results obtained allowed us to perceive that the discourse of the young student of CEMAB reproduces the same senses as the discourse in the school; And the social activities developed by these young people have little innovation and differences from the ones they develop when they are outside of cyberspace, that is, although in cyberspace relationships are given in different time and space, social structures are little changed; However, there are essays of protagonism and the search for the new, but without the light of the experience of the elders for these initiatives to sustain themselves. / Esta disserta????o teve como objetivo analisar os sentidos do discurso digital de jovens estudantes de uma escola p??blica de Ensino M??dio do Distrito Federal, Brasil. Tendo como referencial te??rico e metodol??gico estudos sobre educa????o, tecnologia, juventude em que se destacam os pensamentos de Zigmunt Bauman; Hannah Arendt, Michel Foucault, Pierre L??vy, e An??lise do Discurso da escola francesa; e o corpus de an??lise foram duas P??ginas do Facebook - uma rede social de relacionamentos online. Os resultados obtidos permitiram perceber que o discurso do jovem estudante do CEMAB reproduz os mesmos sentidos que o discurso na escola; e as atividades sociais desenvolvidas por estes jovens pouco t??m de inovadoras e diferentes das que eles desenvolvem quando est??o fora do ciberespa??o, ou seja, embora no ciberespa??o as rela????es se deem em tempo e espa??o diferentes, as estruturas sociais pouco se alteram; no entanto, o que h?? s??o ensaios de protagonismos e a busca pelo novo, por??m sem a luz da experi??ncia dos mais velhos para que estas inciativas se sustentem.

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2016-11-29T15:14:23Z No. of bitstreams: 1 TES_TANIA_REGINA_SCHMITZ_DE_AZEVEDO_RODRIGUES_COMPLETO.pdf: 4461678 bytes, checksum: 82745a32e6ba2b5f1c58028f3cb2fef5 (MD5) / Made available in DSpace on 2016-11-29T15:14:23Z (GMT). No. of bitstreams: 1 TES_TANIA_REGINA_SCHMITZ_DE_AZEVEDO_RODRIGUES_COMPLETO.pdf: 4461678 bytes, checksum: 82745a32e6ba2b5f1c58028f3cb2fef5 (MD5) Previous issue date: 2016-03-23 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Funda??o de Amparo ? Pesquisa do Estado do Rio Grande do Sul - FAPERGS / This study investigates the influence of pressure on the formation of corrosion product scales on API 5L X65 steel used in the oil and gas industry. Experiments were performed in humid CO2 and water saturated with CO2 environments at 50?C for periods of 168 and 360 hours in 2 MPa and 5 MPa subcritical conditions and 10 MPa, 15 MPa and 20 MPa supercritical conditions. The thermodynamic model of Duan was used to obtain information about CO2 solubility in water, the water concentration present in the humid CO2 and the pH for the experimental conditions used in this work. Corrosion rates were determined by weight loss tests, and the scales were characterized by scanning electron microscopy, electrochemical measurements and X-ray diffraction. The results showed that for the 168 hours exposure time, the size of iron carbonate crystals formed in CO2 saturated water was bigger in relation to the ones formed in humid CO2 environments, with the exception of the experiment performed at 20 MPa. The scales formed in 168 hours and 360 hours exposure time, in both environments and pressures, showed typical morphology of iron carbonate. It was also observed that the films tend to be more compact with increased immersion time, but not necessarily more protective. Corrosion rates were classified as severe according to NACERP- 07-75 for both subcritical to supercritical pressures in CO2 saturated water environment and for both exposure times. In the case of 168 hours of exposure and CO2 saturated water environment, the highest corrosion rate occurred at 15 MPa. Already for 360 hours exposure times, performed at supercritical pressures, the corrosion rates increased with increasing pressure and the higher corrosion rate values were observed in water saturated with CO2. Electrochemical impedance tests showed no significant differences in resistance to polarization in subcritical pressures to 168 hours for both environments. As for supercritical pressures, higher polarization resistance was 15 MPa for also both environments. As for supercritical pressures, higher polarization resistance was 15 MPa in CO2 environment. Potentiodynamic polarization tests indicated that at 168 hours of immersion, there was a reduction in the rate of dissolution of the films formed at 10 MPa and 20 MPa in both environments. For the 360 hours of immersion, the corrosion potential was most active at 5 MPa for water saturated with CO2, with no significant differences of humid CO2 environment. / Neste estudo avaliou-se a influ?ncia da press?o na forma??o dos filmes de produto de corros?o no a?o API5L X65 utilizado na ind?stria de petr?leo e g?s. A corros?o foi promovida em ambientes de CO2 ?mido e ?gua saturada com CO2 a 50?C, durante 168 horas e 360 horas, em press?es subcr?ticas de 2 MPa e 5 MPa e supercr?ticas de 10 MPa, 15 MPa e 20 MPa. Utilizou-se o modelo termodin?mico de Duan a fim de obter informa??es sobre solubilidade do CO2 em ?gua, a concentra??o de ?gua presente no CO2 ?mido e o pH para as condi??es experimentais utilizadas neste trabalho. As taxas de corros?o foram determinadas por ensaios de perda de massa, os filmes de produtos de corros?o foram caracterizados por microscopia eletr?nica de varredura, por medidas eletroqu?micas de imped?ncia e de polariza??o potenciodin?mica e difra??o de raios X. Os resultados indicaram que, para 168 horas, os cristais de carbonato de ferro foram maiores para o meio de ?gua saturada com CO2 que em meio de CO2 ?mido, com exce??o em 20 MPa. Os filmes de produtos de corros?o formados durante 168 horas e 360 horas, em ambos os meios e press?es, apresentaram morfologia t?pica de carbonato de ferro. Os filmes tendem a ser mais densos com o aumento do tempo de imers?o, por?m n?o necessariamente mais protetores. As taxas de corros?o foram classificadas como severas, segundo a NACE-RP-07-75 tanto para as press?es subcr?ticas quanto para supercr?ticas no meio de ?gua saturada com CO2, em ambos os tempos de exposi??o. Em 168 horas a maior taxa de corros?o ocorreu em 15 MPa em ?gua saturada com CO2. Para 360 horas, em press?es supercr?ticas, a taxa de corros?o aumentou com o aumento da press?o e as taxas de corros?o mais altas foram observadas para o meio de ?gua saturada com CO2. Os ensaios eletroqu?micos de imped?ncia n?o apresentaram diferen?as significativas ? resist?ncia ? polariza??o em press?es subcr?ticas, para 168 horas, para ambos os meios. Em 360 horas, em press?es subcr?ticas, a maior resist?ncia ? polariza??o foi em 5 MPa tamb?m para os dois meios. J? para press?es supercr?ticas, a maior resist?ncia ? polariza??o foi em 15 MPa no meio de CO2. Os ensaios de polariza??o potenciodin?mica indicaram que em 168 horas houve redu??o na velocidade de dissolu??o dos filmes formados em 10 MPa e 20 MPa em ambos os meios. Para 360 horas, o potencial de corros?o foi mais ativo em 5 MPa para ?gua saturada com CO2, n?o havendo diferen?as significativas para o meio de CO2 ?mido.

Thesis (Ph. D.)--University of Sydney, 2005. / Title from title screen (viewed 16 May 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the Dept. of English, Faculty of Arts. Degree awarded 2005; thesis submitted 2004. Includes bibliographical references. Also available in print form.

Thesis (M.A.) - Carleton University, 1986. / Also available in electronic format on the Internet.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-22T13:24:03Z No. of bitstreams: 2 francisco_vagner_pereira_souza.pdf: 674862 bytes, checksum: 5251dbf5de1a09da84fe52f02a2a8224 (MD5) license_rdf: 21954 bytes, checksum: 8197f94386c8c9a9e551d5deb1b86632 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-22T13:24:36Z (GMT) No. of bitstreams: 2 francisco_vagner_pereira_souza.pdf: 674862 bytes, checksum: 5251dbf5de1a09da84fe52f02a2a8224 (MD5) license_rdf: 21954 bytes, checksum: 8197f94386c8c9a9e551d5deb1b86632 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-22T13:25:26Z (GMT) No. of bitstreams: 2 francisco_vagner_pereira_souza.pdf: 674862 bytes, checksum: 5251dbf5de1a09da84fe52f02a2a8224 (MD5) license_rdf: 21954 bytes, checksum: 8197f94386c8c9a9e551d5deb1b86632 (MD5) / Made available in DSpace on 2014-12-22T13:25:26Z (GMT). No. of bitstreams: 2 francisco_vagner_pereira_souza.pdf: 674862 bytes, checksum: 5251dbf5de1a09da84fe52f02a2a8224 (MD5) license_rdf: 21954 bytes, checksum: 8197f94386c8c9a9e551d5deb1b86632 (MD5) Previous issue date: 2014 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O objetivo deste trabalho foi avaliar o crescimento, teores, ac?mulo e disponibilidade de n?quel em cinco gram?neas forrageiras. Os experimentos foram instalados em condi??es de casa de vegeta??o do Departamento de Agronomia da Faculdade de Ci?ncias Agr?rias da Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina-MG, Brasil. Panicum maximum cv. Aruana e cv. Tanz?nia e Brachiaria decumbens cv. Basilisk, Brachiaria brizantha cv. Xara?s e cv. Marandu foram crescidas em solu??o nutritiva e em solo e adicionadas de 0, 20, 40, e 100 mg L-1 e 0, 20, 40 e 120 mg kg-1 de cloreto de n?quel, constituindo ensaios independentes em delineamento experimental inteiramente casualizados com quatro repeti??es. O per?odo experimental foi de 90 dias. Determinou-se a massa seca e os teores de Ni na parte a?rea, coleto e ra?zes das gram?neas forrageiras. Os conte?dos de Ni foram calculados com base nos teores e nas produ??es de massa seca em cada parte da planta. O teor de n?quel no solo foi determinado pelos extratores Mehlich-1, DTPA pH 7,3, teor semitotal - USEPA 3051 e teor total - USEPA 3052. O crescimento das gram?neas forrageiras reduziu linearmente em solu??o nutritiva com a adi??o de n?quel, mas no solo aumentou at? a dose de 40 mg kg-1. Apesar da fitotoxidade do Ni, as plantas responderam positivamente quando o metal foi aplicado em baixas doses no solo. A suscetibilidade ao Ni foi diferenciada para os experimentos, devido ?s variadas intera??es que ocorrem no sistema solo-planta. O teor de Ni nas gram?neas forrageiras aumentou em fun??o das doses crescentes de Ni nos diferentes experimentos. Os m?todos de extra??o analisados na aferi??o do Ni no solo apresentaram boa correla??o com os teores de Ni encontrados nas plantas, sendo o DTPA mais eficiente. As gram?neas forrageiras avaliadas nestes experimentos n?o podem ser consideradas acumuladoras de Ni. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2014. / The objective of this study was to evaluate the growth, concentrations, accumulation and availability of nickel in five forage grasses. The experiments were conducted under conditions of a greenhouse of the Department of Agronomy, Faculty of Agricultural Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina Minas Gerais, Brazil. Panicum maximum cv. Aruana e cv. Tanz?nia e Brachiaria decumbens cv. Basilisk, Brachiaria brizantha cv. Xara?s e cv. Marandu were grown in nutrient solution and in soil and added 0, 20, 40, and 100 mg L-1 and 0, 20, 40 and 120 mg kg-1 of nickel chloride, constituting separate trials in a completely randomized experimental design with four replications. The experimental period was 90 days. Dry weight and the concentrations of Ni in shoots, stems base and roots of forage grasses were determined. The contents of Ni were calculated based on the amounts and in the production of dry matter in each plant. The nickel concentration in the soil was determined by Mehlich-1, DTPA pH 7.3, semitotal content - USEPA 3051 and total content - USEPA 3052. The growth in forage grasses in nutrient solution linearly decreased with the addition of nickel, but in the soil increased up to 40 mg kg-1. The susceptibility to Ni was different for the experiments, due to the variety of interactions that occur in the soil-plant system. The Ni concentration in forage grasses increased as a function of increasing levels of Ni in the different experiments. The extraction methods analyzed in the measurement of Ni in soil correlated well with the Ni concentration found in plants, with the most efficient DTPA. The forage grasses evaluated in these experiments cannot be considered accumulative Ni.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T13:38:10Z No. of bitstreams: 2 raoni_pereira_carvalho.pdf: 768943 bytes, checksum: 41ef0334b22f9028b8baa7b5acd35b87 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T13:38:49Z (GMT) No. of bitstreams: 2 raoni_pereira_carvalho.pdf: 768943 bytes, checksum: 41ef0334b22f9028b8baa7b5acd35b87 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T13:39:04Z (GMT) No. of bitstreams: 2 raoni_pereira_carvalho.pdf: 768943 bytes, checksum: 41ef0334b22f9028b8baa7b5acd35b87 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2014-12-23T13:39:04Z (GMT). No. of bitstreams: 2 raoni_pereira_carvalho.pdf: 768943 bytes, checksum: 41ef0334b22f9028b8baa7b5acd35b87 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2013 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / Informa??es sobre o comportamento nutricional da oliveira (Olea europaea L.) s?o fundamentais para o estabelecimento e o manejo da aduba??o na cultura em novas regi?es de cultivo no Brasil. Nesse sentido, a aplica??o de fertilizantes organominerais ? uma t?cnica que vem sendo utilizada para atender ? demanda nutricional das plantas, aumentar a produtividade e preservar o meio ambiente, pois essa pr?tica pode reduzir a necessidade de fontes qu?micas, favorecendo a melhoria da estrutura do solo e a utiliza??o pelas plantas. Diante disso, a pesquisa foi realizada com o objetivo de avaliar as caracter?sticas do solo e o comportamento nutricional de duas variedades de oliveira, com a redu??o da aduba??o qu?mica pela aplica??o de um fertilizante organomineral. A pesquisa foi conduzida no munic?pio de Diamantina, MG, Brasil, situado a 18? 14? 56? S e 43? 36? 0? W, ? altitude de 1.384 m. Foram utilizadas duas variedades de oliveira, ?Barnea? e ?Grappolo 541?, de tr?s anos de idade, implantadas no espa?amento de 5 m entre linhas e 3 m entre plantas, em solo classificado como Neossolo Quartzar?nico. Utilizou-se o esquema de parcela subdividida, tendo na parcela o fatorial 4 x 2, sendo quatro aduba??es e duas variedades e, na subparcela, as ?pocas de avalia??o. As aduba??es constitu?ram-se de 100%, 75%, 50% e 0% da aduba??o mineral recomendada para a oliveira, distribu?das em blocos casualizados, com tr?s blocos e tr?s plantas por parcela. Em todas as plantas foi feita a aplica??o do fertilizante organomineral na aduba??o dos dois anos agr?colas, em novembro de 2011 e outubro de 2012, respectivamente. Para avaliar as caracter?sticas do solo e o comportamento nutricional das variedades de oliveira, as amostras foliares e de solo foram retiradas em quatro ?pocas, sendo: antes da aduba??o, em novembro de 2011 e ap?s as aduba??es, em mar?o de 2012, julho de 2012 e junho de 2013. Os dados foram submetidos ? an?lise de vari?ncia e de regress?o polinomial, a 5% de signific?ncia. O comportamento nutricional das variedades de oliveira ?Barnea? e ?Grappolo 541? n?o foi alterado com a redu??o da aduba??o qu?mica e a aplica??o de fertilizante organomineral. A variedade ?Barnea?, por seu h?bito de crescimento r?pido, apresentou menores teores de nutrientes. A redu??o da aduba??o qu?mica em 64,5%, com aplica??o de fertilizante organomineral, n?o interferiu no crescimento vegetativo da variedade ?Grappolo 541?. As caracter?sticas qu?micas do solo melhoraram com a aplica??o do fertilizante organomineral. A fertiliza??o organomineral se mostrou uma excelente alternativa para solos classificados como Neossolos quartzar?nicos. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT Information on the nutritional behavior of the olive tree (Olea europaea L.) is essential for the establishment and management of crop fertilization in new growing regions in Brazil. In this sense, the application of organomineral fertilizers is a technique that has been used to reach the nutrient demand of plants, increase productivity and protect the environment, because this practice can reduce the need for chemical sources, favoring the improvement of soil structure and utilization by plants. Thus, the research was conducted with the aim out to evaluate the soil characteristics and nutritional behavior of two olive varieties with the reduction of chemical fertilization by application of an organomineral fertilizer. The research was conducted in the city of Diamantina, MG, Brazil, located at 18 ? 14' 56" S and 43? 36' 00" W, at an altitude of 1,384 m. Two cultivars of olive (Olea europeae) were used, 'Barnea' and 'Grappolo 541', three years old, cultivated at a spacing of 5 m between rows and 3 m between plants in soil classified as Quartzipsamment. The Split-split Plot scheme was used, taking in plot the 4 x 2 factorial being the factors four fertilization and two cultivars and the sub-plot evaluation times. Fertilization consisted of 100%, 75%, 50%, 0% of mineral fertilization recommended for olive tree, distributed in a randomized block design with three blocks and three plants per plot. In all the plants was made the application of the organomineral fertilizer in fertilization of two agricultural years, in November 2011 and October 2012, respectively. To evaluate the characteristics of the soil and the nutritional behavior of olive varieties, soil and leaf samples were taken at four different times: before fertilization in November 2011 and after fertilization in March 2012, July 2012 and June 2013. Data were subjected to analysis of variance and polynomial regression at 5% significance. The nutritional behavior of olive varieties 'Barnea' and 'Grappolo 541' has not changed with the reduction of chemical fertilizer and application of organomineral fertilizer. The variety 'Barnea', for his habit of rapid growth, had lower nutrients levels. Reduction of chemical fertilizer at 64.5% with application of organomineral fertilizer did not affect the vegetative growth of the variety 'Grappolo 541'. Chemical characteristics of the soil improved with the application of organomineral fertilizer. The organomineral fertilization proved to be an excellent alternative to soil classified as Quartzipsamments.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T18:36:23Z No. of bitstreams: 2 luise_andrade_amaral.pdf: 1436467 bytes, checksum: 25e61f8ccb471b178196973f1abe067f (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T18:37:01Z (GMT) No. of bitstreams: 2 luise_andrade_amaral.pdf: 1436467 bytes, checksum: 25e61f8ccb471b178196973f1abe067f (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-23T18:37:21Z (GMT) No. of bitstreams: 2 luise_andrade_amaral.pdf: 1436467 bytes, checksum: 25e61f8ccb471b178196973f1abe067f (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2014-12-23T18:37:21Z (GMT). No. of bitstreams: 2 luise_andrade_amaral.pdf: 1436467 bytes, checksum: 25e61f8ccb471b178196973f1abe067f (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2013 / O objetivo deste trabalho foi avaliar dois tipos de topsoil, assim como maneiras de utiliza??o dos mesmos, ou como fonte de prop?gulos, nutrientes, microorganismos, mat?ria org?nica etc., na recupera??o de diferentes ?reas degradadas. Os experimentos foram desenvolvidos em ?reas pertencentes ? empresa de minera??o de ferro Anglo American, sediada no munic?pio de Concei??o do Mato Dentro, Minas Gerais, no entanto, como a empresa ainda est? em fase de instala??o, as ?reas cedidas n?o s?o degradadas pelo processo de extra??o do min?rio, sendo uma em pilha de est?ril e a outra em pastagem degradada. O trabalho foi organizado em cap?tulos, em que o primeiro apresenta uma revis?o bibliogr?fica sobre todos os temas envolvidos no estudo. O segundo cap?tulo apresenta a avalia??o da regenera??o natural e da cobertura do solo de uma pilha de est?ril no per?odo seco e chuvoso a partir da deposi??o a lan?o de topsoil proveniente de campo rupestre ferruginoso no munic?pio de Concei??o do Mato Dentro, Minas Gerais. E o terceiro cap?tulo apresenta abordagens para o uso de topsoil na recupera??o de uma pastagem degradada. Na ?rea do cap?tulo 2, foram instaladas, sistematicamente, 26 parcelas e uma parcela controle de 1 m?, foram caracterizados os atributos f?sicos e qu?micos dos substratos com e sem topsoil. Para identifica??o flor?stica, foram realizados dois invent?rios, um em julho de 2012 (in?cio da esta??o seca) e o outro em novembro de 2012 (in?cio da esta??o chuvosa). A cobertura do solo foi estimada, visualmente, por meio da porcentagem de cobertura viva, serrapilheira e solo exposto. Foram registrados 675 indiv?duos, sendo 201 contabilizados na primeira amostragem e 474 na segunda, totalizando 24 esp?cies identificadas pertencentes a 11 fam?lias e X indeterminadas. As fam?lias com maior n?mero de esp?cies foram: Asteraceae, com 26,92%, e Melastomataceae, com 15,38%. No entanto, as fam?lias que apresentaram maior o n?mero de indiv?duos foram Poaceae (33,33%) e Verbenaceae (28,85%) na esta??o seca e Poaceae (93,03%), Portulacaceae (68,16%) e Verbenaceae (35,82%) na esta??o chuvosa. Dentre os h?bitos encontrados, as herb?ceas se destacaram com 65,63% do total, seguidas pelas arbustivas 6,22%, subarbustivas 5,48% e arb?reas 1,18%. A cobertura viva aumentou 53%, a serrapilheira e o solo exposto diminu?ram 13 e 11%, respectivamente. J? no cap?tulo 3, foram estabelecidos 14 tratamentos com tr?s repeti??es implantados em 42 parcelas de 5 x 5 m numa ?rea, anteriormente, ocupada por pastagem. O experimento foi realizado em delineamento em blocos casualizados (DBC), em esquema fatorial (3 x 2 x 2) + 2. Os tratamentos foram compostos pela combina??o das origens do topsoil (est?gio inicial e est?gio m?dio), tr?s espessuras (10, 20 e 30 cm) e aus?ncia ou presen?a de sombrite de 70% com duas testemunhas adicionais (T1 e T2). Foi realizada a caracteriza??o f?sica, qu?mica e microbiol?gica do topsoil por meio de amostras coletadas na profundidade de 0-10 cm. Determinaram-se microorganismos por meio de an?lise de DNA, cobertura do solo e a flor?stica. Os resultados mostraram que o uso do topsoil melhorou, consideravelmente, a atividade microbiana atrav?s do carbono da biomassa e da amplifica??o de DNAs para grupos de bact?rias e fungos. A cobertura vegetal desenvolvida sobre os dois tipos de topsoil apresentou um total de 2929 indiv?duos de h?bitos herb?ceo, arbustivos e subarbustivos, identificadas 33 esp?cies em 11 fam?lias e uma morfoesp?cie. A fam?lia Asteraceae foi a que apresentou o maior n?mero de esp?cies (9), seguida de Fabaceae (6), Convolvulaceae e Malvaceae (4) e Solanaceae (3). J? o levantamento flor?stico do estrato arb?reo registrou 235 indiv?duos pertencentes a 21 esp?cies e 14 fam?lias e duas esp?cies sem identifica??o. A fam?lia com maior riqueza de esp?cies foi a Fabaceae (4), seguida da Rutaceae, Solanaceae, Myrtaceae e Asteraceae, no entanto, o maior n?mero de indiv?duos foi a Siparunaceae. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT The aim of this study was to evaluate two types of topsoil, as well as ways to use them as a source of propagules, nutrients, microorganisms, organic matter etc., The recovery of degraded areas different. The experiments were conducted in areas belonging to the mining company Anglo American iron headquartered in the municipality of Concei??o do Mato Dentro, Minas Gerais, however, as the company is still in the installation phase, the assigned areas are not degraded by the process of extraction of ore, one in waste dump and the other in degraded pasture. The work was organized in chapters where the first presents a literature review on all subjects involved in the study. The second chapter presents the evaluation of natural regeneration and soil cover of a waste dump in the dry and wet deposition from the haul topsoil from ferruginous rocky fields in the municipality of Concei??o do Mato Dentro, Minas Gerais. The third chapter presents approaches to the use of topsoil in the recovery of a degraded pasture. In the area of Chapter 2 were systematically installed 26 plots and a control plot 1 square meter, we characterized the physical and chemical properties of the substrates with and without topsoil. For floristic identification were two surveys one in July 2012 (early dry season) and the other in November 2012 (rainy season). The ground cover was visually estimated by the percentage of live coverage, litter and exposed soil. We recorded 675 individuals being recorded in sample 201 and 474 in the second sample, a total of 24 identified species belonging to 11 families and a group of indeterminate. The families with the largest number of species were Asteraceae and Melastomataceae with 26.92% to 15.38%. However, households that had higher number of individuals were Poaceae (33.33%) and Verbenaceae (28.85%) in the dry season and Poaceae (93.03%), Portulaca (68.16%) and Verbenaceae ( 35.82%) in the rainy season. Among the habits found the herbaceous stood out with 65.63% of the total followed by shrub 6.22%, 5.48% and woody subshrubs 1.18%. The live coverage increased by 53%, the litter and exposed soil decreased by 13 and 11%, respectively. Already in chapter 3 were established 14 treatments with three replications implanted in 42 plots of 5 x 5 m in an area previously occupied by grasslands. The experiment was conducted in randomized block design (RBD), factorial (3x 2 x 2) + 2. The treatments consisted of combinations of sources of topsoil (early stage and middle stage), three thicknesses (10, 20 and 30 cm) and presence or absence of shading 70% with two additional witnesses (T1 and T2). We performed the physical, chemical and microbiological through the topsoil samples collected at a depth of 0-10 cm. Microorganisms was determined through DNA analysis, ground cover, and flora The results showed that the use of topsoil considerably improved microbial activity through carbon and biomass DNA amplification for groups of bacteria and fungi. The vegetation developed on the two types of topsoil had a total of 2929 individuals habits herbaceous, shrubby and subarbustivos, 33 species in 11 families and one morphospecies. The family Asteraceae was the one with the highest number of species (9), followed by Fabaceae (6), Convolvulaceae and Malvaceae (4) and Solanaceae (3). Already a floristic inventory of the tree stratum recorded 235 individuals belonging to 21 species and 14 families and two unidentified species. The family with the highest species richness was the Fabaceae (4), followed by Rutaceae, Solanaceae, Myrtaceae and Asteraceae, however, the largest number of individuals was Siparunaceae.