Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-04-11T21:39:47Z No. of bitstreams: 1 2016 - Tatiana de Oliveira Pinto.pdf: 3500914 bytes, checksum: faf0cbd627200d0ed657530e3be59be3 (MD5) / Made available in DSpace on 2017-04-11T21:39:47Z (GMT). No. of bitstreams: 1 2016 - Tatiana de Oliveira Pinto.pdf: 3500914 bytes, checksum: faf0cbd627200d0ed657530e3be59be3 (MD5) Previous issue date: 2016-02-29 / CAPES / Cadmium is a heavy metal and it offers high risks to human health and it can affect ecosystem functioning at trace levels due to high toxicity, persistence time, which transcends decades and the fact that its bioavailability not diminish the long term. Rice (Oryza sativa L.) has the ability to incorporate large amounts of Cd2+ in their tissues and, therefore, today is the cereal that further incorporates this metal in the human diet by ingestion, causing serious health problems like the known disease as "Itai-Itai", whose main symptoms severe pain in bones and frequent fractures. For this reason rice plants were used in this study in combination with natural materials to assess the effects of these Cd2+. Natural materials such derived from organic matter is currently being used in the remediation of soils and effluents, but studies on the risks of its use today are scarce and often controversial. The use of humified organic matter like vermicompost and its derivatives is a sustainable alternative for the remediation of soils and sewage contaminated by heavy metals due to their chemical composition environmentally non-aggressive, low production cost and possible application in various crops. The aim of this study was to investigate the characteristics of biochar, vermicompost (VC), its solid fraction (RVC) and humin for use in the remediation of soil contaminated with Cd2+. For this was performed characterization of the interactions between the metal and the material through Freundlich and Langmuir adsorption isotherms, spectroscopic techniques CP MAS 13C-NMR and FTIR was also evaluated the ability of each material to provide Cd2+ to plants rice, by determining the root and leaf development parameters and Cd2+ content in plant tissues and the substrate. The surface morphology of the materials was performed using scanning electron microscopy (SEM). This study demonstrates that biochar used and humin are not effective materials for use in remediation. The biochar, although showing a high retention of Cd2+ allowed the bio availability of Cd2+ increasing the accumulation in tissues of rice plants. VC and RVC resulted materials with high Cd2+ retention capacity with a low availability of the metal. Specifically, the RVC can be an effective material for remediation purposes. We warn the risks of use the materials studied for soil remediation purposes contaminated with Cd2+ and propose the use of a new natural source material for phytoremediation purposes. / O C?dmio constitui um metal pesado que oferece altos riscos ? sa?de humana e que pode afetar o funcionamento do ecossistema em n?veis residuais devido ? sua alta toxicidade, seu tempo de persist?ncia, que excede d?cadas e ao fato de sua biodisponibilidade n?o diminuir a longo prazo. O arroz (Oryza sativa L.) possui a capacidade de incorporar quantidades importantes de Cd2+ em seus tecidos e, por esta raz?o, ? hoje o cereal que mais incorpora este metal na dieta humana por ingest?o, ocasionando s?rios problemas de sa?de como a doen?a conhecida como ?Itai-Itai?, que tem como principais sintomas fortes dores nos ossos e frequentes fraturas. Por esta raz?o plantas de arroz foram utilizadas neste estudo em associa??o com os materiais naturais para avalia??o dos efeitos do Cd2+ nestas. Materiais como os derivados da mat?ria org?nica vem sendo utilizados atualmente na remedia??o de solos e efluentes, por?m estudos sobre os riscos de seu uso s?o hoje escassos e muitas vezes controversos. A utiliza??o de mat?ria org?nica humificada, como Vermicomposto e seus derivados ? uma alternativa sustent?vel na remedia??o de solos e efluentes contaminados por metais pesados, devido ? sua composi??o qu?mica ambientalmente n?o agressiva, baixo custo de produ??o, e poss?vel aplica??o em diversas culturas vegetais. O objetivo deste estudo foi investigar as caracter?sticas do biochar, vermicomposto (VC), sua fra??o s?lida (RVC) e humina para serem usados na remedia??o de solos contaminados com Cd2+. Para tal foi realizada a carateriza??o das intera??es entre o metal e os materiais, atrav?s de isotermas de adsor??o de Freundlich e Langmuir, t?cnicas espectrosc?picas CP MAS 13C-RMN e FTIR, foi tamb?m avaliada a capacidade de cada material para biodisponibilizar o Cd2+ para plantas de arroz, atrav?s da determina??o de par?metros de desenvolvimento radicular e foliar e dos conte?dos de Cd2+ nos tecidos das plantas e no substrato. A morfologia da superf?cie dos materiais foi avaliada mediante microscopia eletr?nica de varredura (MEV). Este estudo demonstra que o biochar utilizado e a humina n?o s?o materiais eficientes para serem utilizados na remedia??o. O biochar, embora apresentando uma elevada reten??o de Cd2+ permitiu a biodisponibiliza??o do Cd2+ aumentando o ac?mulo nos tecidos das plantas de arroz. O VC e RVC resultaram materiais com elevada capacidade de reten??o de Cd2+ com uma baixa disponibiliza??o do metal. Especificamente o RVC pode constituir um material eficiente para fins de remedia??o. Adverte-se sobres os riscos no uso dos materiais estudados para fins de remedia??o de solos contaminados com Cd2+ e prop?em-se a utiliza??o deste novo material para fins de fitorremedia??o.

Folha de aprova??o n?o presente na vers?o entregue. / Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T12:07:32Z 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 2015-11-18T12:09:38Z (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 2015-11-18T12:09:38Z (GMT). No. of bitstreams: 2 graciele_araujo_oliveira.PDF: 736032 bytes, checksum: 8f4728012526a950d2e16deec5ce1e59 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2011 / O estudo foi conduzido com o objetivo de determinar os par?metros cin?ticos de degradabilidade in situ da mat?ria seca (MS) e da fibra em detergente neutro (FDN) e de passagem de materiais oriundos da silagem do res?duo da cultura do abacaxi (partes a?reas). Foram utilizados quatro tratamentos: 1- silagem do res?duo da cultura do abacaxi sob compacta??o de 600 Kg/m?, 2- silagem do res?duo da cultura do abacaxi sob compacta??o de 700 Kg/m?, 3- silagem do res?duo da cultura do abacaxi sob compacta??o de 900 Kg/m?, 4- silagem do res?duo da cultura do abacaxi sob compacta??o de 1000 Kg/m?. Ap?s a ensilagem do material oriundo da planta??o, avaliaram-se a cin?tica de tr?nsito de part?culas e cin?tica de degrada??o ruminal. Para a cin?tica de tr?nsito de part?culas foi utilizado como indicador o cromo para marcar a fibra. As taxas de passagem foram determinadas por meio da recupera??o dos indicadores nas fezes do animal. No ensaio de degrada??o foram incubadas as amostras em bolsas de n?ilon nos tempos 0, 6, 18, 48 e 96 horas. O comportamento apresentado nas curvas de regress?o das vari?veis analisadas descreve uma alta correla??o entre elas, ou seja, o tempo em que a silagem fica retida no r?men exerce influ?ncia na sua digestibilidade e na sua taxa de degrada??o. De fato, quanto maior o tempo em que um alimento estiver no r?men, mais a??es digestivas ele sofrer? e por consequ?ncia vai ser mais digerido. Embora a silagem sob press?o de compacta??o de 900Kg/m? apresente uma maior fra??o potencialmente digest?vel, recomenda-se o uso da silagem sob press?o de compacta??o de aproximadamente 750Kg/m?, devido ao menor custo e por apresentar menor tempo m?dio de reten??o r?men ret?culo e reple??o ruminal, aumentando assim a din?mica ruminal de degrada??o e passagem. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, [2011]. / ABSTRACT The study was conducted to determine the kinetic parameters of in situ dry matter (DM) and neutral detergent fiber (NDF) and the movement of materials from the waste silage of pineapple crop (aerial parts). It was used four treatments: 1- crop residue silage pineapple under compression of 600 kg/m?, 2- silage crop residue pineapple under compression of 700 kg/m?, 3- silage crop residue pineapple under compression 900 kg/m?, 4- silage crop residue pineapple under compression of 1000 kg/m?. After ensiling the material from the plantation, it was evaluated the kinetics of passage of particles and kinetics of ruminal degradation. For the kinetics of passage of particles was used as an indicator to mark the chromium fiber. Leakage rates were determined by means of the indicators of recovery in the feces of the animal. In the degradation assay samples were incubated in nylon bags at 0, 6, 18, 48 and 96 hours. The behavior presented in the regression curves of the variables describing a high correlation between them, in other words, the time when the silage is retained in the rumen influence on its digestibility and its rate of degradation. In fact, the longer that a food is in the rumen, he will suffer more digestive actions and therefore will be more digestible. Although silage compression pressure 900kg/m? present a higher potentially digestible fraction, we recommend the use of silage compaction pressure of about 750kg/m?, due to lower cost and have lower average retention rumen and reticulum ruminal fill, thus increasing the dynamic ruminal degradation and passage.

Linha de pesquisa: Gest?o de institui??es educacionais. / Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-02-09T19:06:08Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) evandro_merces_amorim.pdf: 1644889 bytes, checksum: 1ccc0a19ebdc7ccb6501caf8ca9f4981 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-02-23T12:41:26Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) evandro_merces_amorim.pdf: 1644889 bytes, checksum: 1ccc0a19ebdc7ccb6501caf8ca9f4981 (MD5) / Made available in DSpace on 2017-02-23T12:41:26Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) evandro_merces_amorim.pdf: 1644889 bytes, checksum: 1ccc0a19ebdc7ccb6501caf8ca9f4981 (MD5) Previous issue date: 2016 / Com a finalidade de contribuir com a gest?o da Universidade Federal dos Vales do Jequitinhonha e Mucuri na implementa??o de a??es voltadas para assegurar a perman?ncia do estudante at? a conclus?o do curso de gradua??o de origem, esta pesquisa apresenta uma investiga??o relacionada ? evas?o discente nos cursos de gradua??o presencial dos campi da Universidade Federal dos Vales do Jequitinhonha e Mucuri em Diamantina/MG e seus desdobramentos em rela??o ? diploma??o. A partir desse estudo, buscou-se identificar as turmas dos cursos de gradua??o presencial em cada Unidade Acad?mica dos campi da UFVJM em Diamantina/MG que possu?am maior ?ndice de evas?o no per?odo de 2010 a 2014. Ap?s a identifica??o do curso com maior percentual de evas?o discente em cada Unidade Acad?mica, pretendeu-se assinalar as principais vari?veis que a influenciaram. Embora seja um tema pouco explorado e, consequentemente, pouco discutido na literatura educacional brasileira, principalmente quando situado no campo da educa??o superior, a evas?o escolar se revela como um tema complexo, compreendida, neste estudo, como a sa?da definitiva do aluno de seu curso de origem sem conclu?-lo. Em rela??o aos objetivos, consiste em um estudo explorat?rio que apresenta abordagens quantitativa e qualitativa como procedimentos principais para a investiga??o. Al?m da revis?o da literatura, a coleta de dados foi realizada por meio da an?lise documental, onde foram examinados os dados derivados dos arquivos da Pr?-Reitoria de Gradua??o da UFVJM e do Siga-ensino, um m?dulo do Sistema Integrado de Gest?o Acad?mica, atrav?s dos quais se averiguou os cursos com os mais elevados percentuais de evas?o no per?odo. Para a identifica??o da vari?vel preponderante para a evas?o escolar nos cursos de gradua??o presencial examinados na etapa anterior, foi considerado, para an?lise, o alunado ingressante no ano de 2010. Como m?todo de aprecia??o dos dados, foi aplicada a an?lise de conte?do, tendo como refer?ncia o modelo apresentado por Laurence Bardin. / Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o em Educa??o, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / In order to contribute to the management of the Federal University of Vales do Jequitinhonha e Mucuri, UFVJM, in the implementation of actions to ensure the students permanence until the completion of the original undergraduate courses, this research presents a related investigation about students dropout from class attendence undergraduate courses in the campuses of Diamantina / MG, and its deployments in relation to graduation. The goal of this study was to identify the courses of the campus in each academic unit that had a higher dropout rate in the period of 2010 to 2014. After identifying the courses with the highest percentage of dropout, the intention was to point out the main variables that influenced it. Although it is a relatively unexplored subject and, consequently, little discussed in the Brazilian educational literature, particularly when it comes to the field of higher education, university dropout has been seen as a complex issue, and understood in this study as the final egress of the student from the undergraduate course without completing it. Concerning the goals, it consists of an exploratory study that reveals quantitative and qualitative approaches as key processes for this research. In addition to the literature review, the data collection was performed through document analysis of the data derived from the files of the UFVJM Pro-Rectory of Graduation and Siga-ensino, a module of the Integrated Academic Management through which the courses with the highest dropout percentage in the period were examined. With the view to identify the major variable for the dropout from class attendence undergraduate courses examined in the previous stage of this study, the student body entering starting in 2010 was considered for analysis. The analysis of content was applied as data assessment method, and the model followed in the study was the one introduced by Laurence Bardin as reference.

Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-05-05T13:56:17Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) adalvan_soares_oliveira.pdf: 2054370 bytes, checksum: ad47425a0c4bf2568ddc4ea973b7a1e2 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-05-16T17:06:31Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) adalvan_soares_oliveira.pdf: 2054370 bytes, checksum: ad47425a0c4bf2568ddc4ea973b7a1e2 (MD5) / Made available in DSpace on 2017-05-16T17:06:31Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) adalvan_soares_oliveira.pdf: 2054370 bytes, checksum: ad47425a0c4bf2568ddc4ea973b7a1e2 (MD5) Previous issue date: 2016 / Esta pesquisa teve como objetivo compreender os fatores determinantes da reten??o escolar no IFNMG/Campus Almenara no per?odo de 2013 a 2014, relacionados com os procedimentos adotados pela gest?o escolar da institui??o. Para alcance do objetivo geral foram definidos os seguintes objetivos espec?ficos: identificar os elementos que contribuem para a exist?ncia da reten??o escolar no IFNMG/Campus Almenara no per?odo de 2013 a 2014; compreender as a??es adotadas pela equipe de gest?o escolar do IFNMG/Campus Almenara frente ? reten??o escolar e, consequentemente, melhorar a qualidade de ensino; e, por fim, verificar as a??es poss?veis ? gest?o escolar para superar a reten??o escolar. Para o desenvolvimento do estudo, valeu-se de uma postura metodol?gica de natureza qualitativa, por?m partilhada a dados quantitativos, constitu?da por uma parte documental e de campo com aplica??o de question?rio a 52 respondentes, sendo o p?blico alvo composto por alunos e gestores. Os procedimentos metodol?gicos a caracterizam como um estudo de caso, uma vez que a investiga??o teve como prop?sito gerar conhecimentos aprofundados sobre uma realidade espec?fica do IFNMG/Campus Almenara, caracterizando-se de natureza explicativa e explorat?ria. Os resultados obtidos evidenciaram que os fatores que impulsionam a reten??o escolar no IFNMG/Campus Almenara s?o multifatoriais por estarem relacionados tanto no que se refere ?s quest?es individuais dos pr?prios alunos quanto ?s a??es (ou aus?ncia destas) de cunho institucional, bem como a aspectos familiares, sociais e culturais em geral. Todavia, mesmo que a reten??o escolar n?o tenha determinantes espec?ficos, ? poss?vel que a gest?o escolar contribua tanto para sua supera??o quanto para estagna??o ou retrocesso, dependendo da forma utilizada para gerir a unidade escolar da qual faz parte. / Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o em Educa??o, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / This research aimed to understand the determinants of student retention in IFNMG / Campus Almenara from 2013 to 2014, relating to the procedures adopted by the school management of the institution. To reach the overall goal, the following specific objectives were: to identify the elements that contribute to the existence of school retention in IFNMG / Campus Almenara from 2013 to 2014, to understand the actions taken by the school management team IFNMG / Campus Almenara front of school retention and consequently improve the quality of teaching and, finally, check the possible actions the school management may take to overcome school retention. For it?s construction, it took advantage of a methodological approach of a qualitative nature, but shared the quantitative data, consisting of a documentary and part field with questionnaires to 52 respondents, with the target audience of students and managers. Methodological procedures can be characterized as a case study, since the research aimed to generate in-depth knowledge of a specific reality of IFNMG / Campus Almenara, with explanatory and exploratory nature. The results showed that the factors that drive student retention in IFNMG / Campus Almenara are multifactorial because they are related both with regard to individual questions from the students themselves, as in the actions (or lack thereof) of an institutional nature, the familiar aspects, social and cultural rights in general. However, even school retention having no specific determinants, school management can contribute much to overcome them, or to stagnation or backward, depending on the form used to manage the school unit to which it belongs.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-08-02T17:10:18Z No. of bitstreams: 1 2004 - Silvio Jos? Elia Galv?o.pdf: 2579671 bytes, checksum: ac93bbefdc6fd8aa6f67c30746be92d5 (MD5) / Made available in DSpace on 2016-08-02T17:10:18Z (GMT). No. of bitstreams: 1 2004 - Silvio Jos? Elia Galv?o.pdf: 2579671 bytes, checksum: ac93bbefdc6fd8aa6f67c30746be92d5 (MD5) Previous issue date: 2004-02-27 / Empresa Brasileira de Pesquisa Agropecu?ria - EMBRAPA; Empresa de Pesquisa Agropecu?ria do Estado do Rio de Janeiro - Pesagro. / The aim of this study was to identify the main properties of the green coconut shell fiber and conduct experiments with it. The fiber received different treatments in order to make it possible to give technical orientation for its use as substrate for lettuce seedlings growth. The green coconuts used in the experiments came from the selective collection of garbage produced by the consumption of green coconuts in natura at the beaches and other places where they are sold, as well as residues from agro-industries that bottle green coconut water. The green coconuts had their water consumed and were collected without any preservation or transportation criteria in order to repeat the habitual treatment given to solid residue of that sort in large urban centers. All the fruits used were kept in the shade at room temperature, for the maximum period of four (4) days after the consumption of the water. They were manually chopped and ground, while still green, in grass crushers. Eight (08) treatments were defined in order to carry out the study to be done with the green coconut fiber, as follows: treatment T1 - crushed green coconut fiber; treatment T2 - ground green coconut fiber; treatment T3 - crushed and ground green coconut fiber; treatment T4 - crushed and ground green coconut fiber + bovine manure; treatment T5 ? crushed green coconut fiber + bovine manure; treatment T6 - ground green coconut fiber + bovine manure; treatment T7 ? crushed green coconut fiber + limestone; treatment T8 ? crushed and washed green coconut fiber. In order to compare the different treatments, three commercial substrates were chosen to be used in the study, namely: substrate Plantmax HA, from Eucatex Agro, as treatment T9; substrate MP Horta 2, from Mecplant, as treatment T10; substrate MP FLORESTAL, from Mecplant, as treatment T11. Several chemical and physical analyses of the treatments were made in order to make decisions about the manipulation of treatments, looking for final results in lettuce seedlings production similar to those obtained with commercial substrates. All the green coconut shell fiber treatments presented physical characteristics which made it easy to manipulate them in its use as substrate in plant propagation, as well as high water-holding capacity, high carbon / nitrogen ratio, electric conductivity, and porosity. When the fiber was added to manure, the result was good for treatment T5. The electrical conductivity (EC) was reduced when the coconut shell fiber was washed with water. / O objetivo do presente trabalho foi identificar as principais caracter?sticas da fibra do coco verde e experimentar tratamentos com esta fibra de modo a possibilitar orienta??o t?cnica para sua utiliza??o como substrato para plantas em cultivo de alface. Foram utilizados frutos de coco verde oriundos da coleta seletiva de lixo produzido pelo consumo in natura de frutos na orla das praias e outros pontos de vendas, assim como de res?duos de agroind?strias envasadoras de ?gua de coco-verde. Os frutos de coco verde tiveram sua ?gua consumida, sendo coletados sem quaisquer crit?rios de preserva??o e transporte, de modo a repetirem uma situa??o habitual de trato dado a res?duos s?lidos desta natureza em grandes centros urbanos. Todos os frutos utilizados foram mantidos ? sombra, em temperatura ambiente, por no m?ximo quatro (04) dias ap?s terem sua ?gua consumida, sendo picados com ferramentas de corte manual e triturados em picadeiras de capim de uso em agropecu?ria ainda verde. Foram definidos oito (08) tratamentos com fibra de coco verde para a condu??o dos trabalhos com a fibra de coco, a saber: tratamento T1 - fibra de coco picada; tratamento T2 - fibra de coco mo?da; tratamento T3 - fibra de coco picada + mo?da; tratamento T4 - fibra de coco picada + mo?da + esterco bovino; tratamento T5 - fibra de coco picada + esterco bovino; tratamento T6 - fibra de coco mo?da + esterco bovino; tratamento T7 - fibra de coco picada + calc?rio; tratamento T8 - fibra de coco picada lavada. Comparativamente, foram escolhidos para uso nos estudos 03 (tr?s) substratos comerciais para plantas: substrato Plantmax HA, da empresa Eucatex Agro, como tratamento T9; substrato MP Horta 2, da empresa Mecplant, como tratamento T10; e substrato MP Florestal, da empresa Mecplant, como tratamento T11. In?meras an?lises qu?micas e f?sicas foram realizadas com os tratamentos de modo a permitirem tomadas de decis?es sobre o manejo dos mesmos, buscando resultados finais na produ??o de mudas de alface semelhantes aos obtidos com substratos comerciais. Todos os tratamentos ? base de fibra de coco apresentaram caracter?stica f?sica de f?cil manejo para seu uso como substrato para plantas, al?m de elevada capacidade de reten??o de ?gua, rela??o carbono/nitrog?nio, condutividade el?trica e porosidade. A adi??o de esterco bovino promoveu resultado positivo no tratamento T5. A lavagem da fibra com ?gua reduziu a condutividade el?trica (CE) da casca do coco-an?o verde.

Made available in DSpace on 2014-12-17T13:53:19Z (GMT). No. of bitstreams: 1 RenatoFAA.pdf: 818612 bytes, checksum: 8c65c2a725e1fd945e5039f0d2fdc136 (MD5) Previous issue date: 2008-09-05 / The current paper aims at analyzing customer retention in Internet provider services. For this study, we sought to understand what are the client's expectations regarding the services available and compare them with management perception in relation to the use of those services. Identifying the coherence level between the two points of view, management and client, it is possible to pinpoint how service is assessed in real conditions. Then, from this point on, a new vision can be implemented on available services, and new customer service strategies aiming at best serving to their expectation and need, can be rethought. The exploratory research was utilized. It was based on case study, and quantitative and qualitative methods were used. The quantitative method was done by applying the cluster technique with six variables of control derived from the six main services, whose definition was done through qualitative survey of the internal management team. Then, an structured interview with 443 clients, from a probabilistic sample of 800 costumers. The total number of active clients of the internet provider is of 10.677. Client perception in relation to services varied, if compared with the four services that were under the managerial metric method, this comparison showed a more positive evaluation than the real use of the service. Thus, it was observed that the value of each service available for the client depends on his/her perception of it, regardless of using or not the offered service. As a result, it is possible to understand which services offered by the company under study effectively contribute to a good client-company relationship, and the upkeep of those clients / O presente trabalho analisa a reten??o dos clientes em provedor de acesso ? internet. Para esse estudo, procurou-se conhecer quais as perspectivas do cliente referentes aos servi?os disponibilizados e compar?-las com a percep??o gerencial em rela??o ao uso dos servi?os. Com a identifica??o do grau de coer?ncia entre as duas vis?es, a utilizada pelos gerentes e a vis?o dos clientes, pode-se assim identificar como s?o avaliados os servi?os e suas reais demandas. A partir desse momento, podem-se repensar os servi?os dispon?veis e, assim, propor estrat?gias de relacionamento no intuito de atender ?s expectativas e necessidades dos clientes. A pesquisa realizada foi do tipo explorat?ria, baseada em estudo de caso, e se utilizou de um m?todo qualitativo e quantitativo. O m?todo quantitativo foi realizado utilizando a t?cnica de agrupamento (cluster) com seis vari?veis de controle originadas dos seis servi?os principais, cuja defini??o foi realizada por meio de uma pesquisa qualitativa com os gerentes internos. Ap?s essa fase, foi realizada uma entrevista estruturada inicialmente com cerca de 443 clientes, de uma amostra inicial n?o probabil?stica de 800 clientes. O total de clientes ativos do provedor em estudo ? de 10.677 clientes. As percep??es dos clientes em rela??o aos servi?os tiveram varia??es e, se comparado com os quatro servi?os que foram analisados sob a m?trica gerencial, esse confronto em geral demonstrou uma avalia??o mais positiva do que o real uso do servi?o. Constata-se, ent?o, que o valor de cada servi?o disponibilizado para o cliente depende da sua percep??o, mesmo que ele utilize ou n?o o produto ofertado. Como resultado, pode-se melhorar a compreens?o de quais servi?os ofertados pela empresa em estudo contribuem efetivamente para o relacionamento e reten??o desses mesmos clientes

Made available in DSpace on 2014-12-17T14:52:44Z (GMT). No. of bitstreams: 1 LuizCBN.pdf: 3604754 bytes, checksum: af35eb23b3195b5822746a901e37f35e (MD5) Previous issue date: 2009-03-16 / The competition in the telecommunications industry has grown in Brazil since the privatization, forcing companies that are active in the market to a growing commitment to quality products and services in order to survive. In this context, this work aims to understand the main factors that influence the degree of satisfaction exists in respect of a mobile operator with its corporate customers. The research covered theoretical concepts and analytical models of quality management system and models of indices related to the measurement of customer satisfaction. For the field research was carried out in a practical application of the main approaches based on this thesis by a case study in corporate segment, through a questionnaire applied to 10 consultants and 40 corporate customers of that company. Comparing the results of research with the consultants and corporate clients there is the concern of respondents to the indicators that comprise the constructs of customer satisfaction, commitment calculated, the price index and the handling of complaints, denoting the dissatisfaction of the general assessment for corporate customers with the carrier, against its current expectations. It is concluded that the mobile operator of the telecommunications industry have a big challenge, after ten years of privatization and consequently the period of rapid expansion of customer base and with the depleted, retain corporate customers as highly strategic, thus avoiding that migrate to other companies. We emphasize the need for further research and analysis of different approaches through research and using the same models to specifically evaluate and measure customer satisfaction of mobile enterprise, to adjust the model to the national market. Finally, we suggest the creation of an effective customer loyalty program with a strategy of relationship and specific to the corporate sector of mobile telephony / A competi??o no setor de telecomunica??es tem crescido no Brasil desde a privatiza??o, obrigando as empresas que est?o atuando no mercado a um comprometimento cada vez maior com a qualidade dos produtos e servi?os prestados para poderem sobreviver. Neste contexto, este trabalho tem como objetivo principal entender os fatores que influenciam no grau de satisfa??o existente na rela??o de uma operadora de telefonia celular com seus clientes corporativos. A pesquisa te?rica abrangeu conceitos e an?lise de modelos de sistema de gest?o de qualidade e modelos de ?ndices relacionados ? mensura??o da satisfa??o do cliente. Para a pesquisa de campo procedeu-se a uma aplica??o pr?tica das principais abordagens fundamentadas nesta disserta??o via estudo de caso no segmento corporativo, atrav?s de question?rio aplicado a 10 consultores corporativos e 40 clientes desta mesma empresa. Comparando o resultado da pesquisa junto aos consultores e clientes corporativos verificou-se a preocupa??o dos entrevistados com os indicadores que comp?em os construtos satisfa??o do cliente, compromisso calculado, ?ndice de pre?os e tratamento das reclama??es, denotando pela avalia??o geral a insatisfa??o dos clientes corporativos para com a operadora, contrariando suas expectativas atuais. Conclui-se que as operadoras de telefonia celular do setor de telecomunica??es t?m um grande desafio, passado dez anos da privatiza??o e conseq?entemente do per?odo de expans?o vertiginosa da base de clientes e com o mercado exaurido, reter os clientes corporativos considerados altamente estrat?gicos, evitando assim que migrem para outras empresas. Enfatizamos a necessidade de novas pesquisas e enfoques de an?lise diferenciada atrav?s de pesquisas utilizando o mesmo e outros modelos para avaliar e medir especificamente a satisfa??o do cliente corporativo de telefonia celular, visando ajustar o modelo ao mercado nacional. Por fim, sugerimos a cria??o de um programa de fidelidade efetivo com uma estrat?gia definida de relacionamento e espec?fica para o setor corporativo de telefonia celular

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:33Z No. of bitstreams: 5 3.pdf: 1293801 bytes, checksum: 8df08be550789bd3f1c5c25b92deba50 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:19:32Z (GMT) No. of bitstreams: 5 3.pdf: 1293801 bytes, checksum: 8df08be550789bd3f1c5c25b92deba50 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:19:32Z (GMT). No. of bitstreams: 5 3.pdf: 1293801 bytes, checksum: 8df08be550789bd3f1c5c25b92deba50 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2009 / A turfeira ? formada pelo ac?mulo em sucess?o de restos vegetais, em locais que apresentam condi??es que inibem a atividade de microrganismos decompositores, como excesso de umidade, baixo pH, escassez de oxig?nio e temperaturas amenas. Em Diamantina, esse pedoambiente ? encontrado na ?rea de Prote??o Ambiental - APA Pau-de-Fruta, situada a 6 km da sede do munic?pio, a uma altitude m?dia de 1366 m. A APA est? inserida na Serra do Espinha?o Meridional, sua litologia ? predominantemente quartz?tica e a vegeta??o ? t?pica de campo rupestre, com pequenas ilhas de cerrado denominadas cap?es, que se adaptaram ao ambiente hidrom?rfico. O ambiente ? oligotr?fico e apresenta elevados teores de Al3+ e valores de satura??o por alum?nio. As turfeiras formadas nessa ?rea apresentam verticalmente uma estrutura bem definida, sendo que as camadas mais superficiais foram classificadas, de acordo com seu est?gio de decomposi??o, como f?bricas, as intermedi?rias como h?micas e as camadas mais profundas, como s?pricas. A turfeira, por ser um ambiente de ac?mulo de mat?ria org?nica em condi??es de baixa atividade de O2, favorece a forma??o e a manuten??o de subst?ncias h?micas, sobretudo as fra??es menos sol?veis, de forma que o teor de humina ? maior que os teores de ?cidos h?micos que, por sua vez, s?o maiores que o teor de ?cidos f?lvicos. A turfeira, devido ao seu comportamento tipo esponja, apresenta grande import?ncia na din?mica da ?gua nessa regi?o, de forma que, nos per?odos chuvosos, ela armazena ?gua em seus poros e a libera de forma gradativa com o passar do tempo. A turfeira da APA Pau-de-Fruta ocupa 81,75 ha, armazena cerca de 629.782 m3 de ?gua e estoca em torno de 33.129 toneladas de carbono. Dessa forma, a turfeira da APA Pau-de-Fruta representa um consider?vel reservat?rio natural de ?gua, bem como o importante ambiente de sequestro de carbono e ? fundamental para o abastecimento de ?gua da cidade de Diamantina. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2009. / ABSTRACT The Peat Bog is formed by the accumulation in succession of crop residues in places with conditions that inhibit the activity of microbial decomposers, such as excessive moisture, low pH, lack of oxygen and mild temperatures. In Diamantina, this is found in the Environmental Protection Area - EPA Pau-de-Fruta, situated 6 km from the headquarters of the city, at an average altitude of 1,366 m. The EPA is inserted in the Serra do Espinha?o Meridional, its lithology is predominantly quartz and its vegetation is typical of rocky field, with small islands of ?cerrado? (vegetation of the Brazilian interior) called ?cap?es?, which are adapted to the hydromorphic environment. The environment is oligotrophic and offers high levels of Al3+ and the values of saturation by aluminum. The bogs formed in this area have a vertically well-defined structure and, according to their stage of decomposition, the more superficial layers were classified as ?f?bricas?, the intermediate layers as ?h?micas?, and the deeper layers as ?s?pricas?. The bog, being an environment of accumulation of organic material under conditions of low activity of O2, promotes the formation and maintenance of wet substances, especially the less soluble fractions, so that the content of humin is greater than the levels of humic acids which in turn are greater than the content of fulvic acids. The bog, because of its behavior type sponge, has great importance in the dynamics of water in this region, so that in rainy periods it stores water in its pores and releases it gradually over the time. The bog of the EAP Pau-de-Fruta occupies 81.75 ha, stores about 629,782 m3 of water and stocks around 33,129 tonnes of carbon. Thus, the bog of of the EAP Pau-de-Fruta is a considerable natural reservoir of water, and an important environment of carbon sequestration and it is essential for the supply of water for the city of Diamantina.

Made available in DSpace on 2014-12-17T13:53:17Z (GMT). No. of bitstreams: 1 CasioCPB.pdf: 223119 bytes, checksum: 97c79c2a5739a0243c398cc767f21c7c (MD5) Previous issue date: 2008-09-04 / This study addresses the question of attraction and retention of talent in companies that produce engineering projects in the area of oil and natural gas in the city of Natal. The objectives were to identify the mechanisms that these companies use to attract and retain talented professionals and what the relationship between these practices and performance of these organizations in the market. This is a case study of a qualitative nature which were included in the fullness of companies that work in that class in the capital Potiguar. Have been applied to the managers of these companies structured questionnaires with eleven issues orientativas based on theoretical reference adopted. The research finds that managers understand the word "talent", recognize the importance of the appreciation of its employees and the development of their innate abilities to better organizational performance, much due to the fact they are acting in a market of fierce competition. His companies - though not submit the formal procedures related to the subject in question - have mechanisms that can be characterized as the attraction and retention of talent. The relationships identified in this study are consistent with the results found in other studies and put the information here can serve as the basis for that other managers, including other areas, to reach excellence in their respective industries / O presente estudo aborda a quest?o da atra??o e reten??o de talentos nas empresas que elaboram projetos de engenharia na ?rea de petr?leo e g?s natural na cidade do Natal. Os objetivos foram identificar os mecanismos que essas empresas utilizam para atrair e reter profissionais talentosos e quais as rela??es existentes entre essas pr?ticas e o desempenho das referidas organiza??es no mercado. Trata-se de um estudo de caso de natureza qualitativa no qual foram inclu?das a plenitude das empresas que atuam nesse ramo na capital potiguar. Foram aplicados aos gerentes dessas empresas question?rios estruturados com onze quest?es orientativas fundamentadas no referencial te?rico adotado. A pesquisa constata que os gestores compreendem o termo talento , reconhecem a import?ncia da valoriza??o de seus funcion?rios e do desenvolvimento de suas habilidades inatas para um melhor desempenho organizacional, muito devido ao fato de estarem atuando em um mercado de acirrada competi??o. Suas empresas apesar de n?o apresentarem processos formais relacionados ao tema em quest?o apresentam mecanismos que podem ser caracterizados como de atra??o e reten??o de talentos. As rela??es identificadas neste estudo s?o consistentes com os resultados encontrados em outros trabalhos e as informa??es aqui postas podem servir de base para que demais gestores, inclusive de outras ?reas, consigam atingir a excel?ncia em seus respectivos setores

Submitted by Alexandre Soares (alexandredesoares@yahoo.com.br) on 2016-08-25T13:43:56Z No. of bitstreams: 1 r?bio_madureira_de_souza_carvalho.pdf: 979305 bytes, checksum: 83ec9442a31d4ad5d5a70aee8e74fba1 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2016-09-08T18:51:39Z (GMT) No. of bitstreams: 1 r?bio_madureira_de_souza_carvalho.pdf: 979305 bytes, checksum: 83ec9442a31d4ad5d5a70aee8e74fba1 (MD5) / Made available in DSpace on 2016-09-08T18:51:39Z (GMT). No. of bitstreams: 1 r?bio_madureira_de_souza_carvalho.pdf: 979305 bytes, checksum: 83ec9442a31d4ad5d5a70aee8e74fba1 (MD5) Previous issue date: 2015 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG) / Caracter?sticas da carne de bovinos cruzados (Wagyu ? Red Angus) e matura??o da carne de Nelore. Orientador: Orientador: Orientador: Orientador: Orientador: Cleube Andrade BoariCleube Andrade Boari Cleube Andrade BoariCleube Andrade Boari Cleube Andrade BoariCleube Andrade BoariCleube Andrade BoariCleube Andrade BoariCleube Andrade BoariCleube Andrade BoariCleube Andrade BoariCleube Andrade Boari . Disserta??o (Mestrado em Zootecnia). Esta disserta??o foi elaborada com o resultado de duas pesquisas. A primeira foi conduzida com o objetivo de avaliar as caracter?sticas de qualidade da carne de bovinos cruzados Wagyu ? Angus (Red). A segunda foi conduzida com o objetivo de verificar os efeitos da matura??o de maminha de alcatra de Nelore em diferentes temperaturas (0?C e 4?C) e tempos (0 = carne fresca com 24 horas, 7, 14, 21 e 28 dias). Na primeira pesquisa foi analisada a carne dos m?sculos Longissimus thoracis, Semitendinosus e Triceps brachii obtidas do abate de machos castrados e de f?meas, aos 24 meses de idade. Na desossa foram mensurados no m?sculo Longissimus thoracis a espessura de gordura subcut?nea, cor da gordura (L*a*b*, C, H?), a ?rea de olho de lombo e escore para o grau de marmoriza??o. Foram analisados o pH final, a capacidade de reten??o de ?gua, a perda de peso por cozimento, a for?a de cisalhamento, cor (L*a*b*, C, H?) e os teores de umidade, massa seca, res?duo mineral fixo, prote?na e gordura. Por??es de carne do m?sculo Longissimus thoracis foram coletadas avaliar o efeito dos tempos de sete e 14 dias de matura??o no pH final, na capacidade de reten??o de ?gua, na perda de peso por cozimento, na for?a de cisalhamento, na cor da carne (L*a*b*, C, H?) e na cor da gordura (L*a*b*, C, H?). Para a carne de todos os m?sculos n?o houve efeito de sexo no pH final, na capacidade de reten??o de ?gua, na perda de peso por cozimento e no teor de prote?na. O Longissimus thoracis de f?meas recebeu os melhores escore para marmoreio, apresentou maior teor de gordura e menor for?a de cisalhamento e no Longissimus thoracis de machos apresentou maior ?rea de olho de lombo. A matura??o da carne do Longissimus thoracis proporcionou redu??o na for?a de cisalhamento e aumento do pH final. Na segunda pesquisa, por??es de carne (? 400 gramas) foram embaladas, a v?cuo, e estocadas em c?mara frigor?fica nas temperaturas (0?C e 4?C). Foram mantidas nestas temperaturas por 7, 14, 21 e 28 dias. Foram analisados o pH, capacidade de reten??o de ?gua, perda de peso por cozimento, for?a de cisalhamento, cor (L*, a*, b*, C, H?). N?o houve varia??o no pH em fun??o da temperatura utilizada. Entretanto, o pH aumentou com o decorrer do tempo de matura??o. Foi observada varia??o na luminosidade da carne em fun??o da temperatura, sendo menor a luminosidade na carne maturada a 0?C. O teor de vermelho desta carne aumentou linearmente em fun??o do tempo de matura??o e tamb?m foi influenciada pelas temperaturas de matura??o, sendo maior quando maturada a 0?C. A perda de peso por cozimento tamb?m apresentou aumento linear ao longo do tempo de matura??o. A capacidade de reten??o de ?gua e a for?a de cisalhamento apresentaram redu??o linear ao longo do tempo de matura??o. A matura??o por 28 dias ocasionou redu??o na for?a de cisalhamento da maminha de alcatra. Recomenda-se maturar a maminha de alcatra por 28 dias em temperatura de 4?C. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2015. / Characteristics of meat from crossbred cattle (Wagyu ? Red Angus) and maturation Nelore meat. Adviser: Cleube Andrade Boari. Adviser: Cleube Andrade Boari. Adviser: Cleube Andrade Boari. Adviser: Cleube Andrade Boari.Adviser: Cleube Andrade Boari. Adviser: Cleube Andrade Boari.Adviser: Cleube Andrade Boari. Adviser: Cleube Andrade Boari.Adviser: Cleube Andrade Boari.Adviser: Cleube Andrade Boari.Adviser: Cleube Andrade Boari.Adviser: Cleube Andrade Boari.Adviser: Cleube Andrade Boari. Adviser: Cleube Andrade Boari. Dissertation Dissertation (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science (Master?s degree in Animal Science ). This paper was drawn up on the results of two surveys. The first was conducted in order to evaluate the quality characteristics of meat from crossbred cattle Wagyu ? Angus (Red). The second was conducted in order to verify the effects of maturation titty rump Nellore at different temperatures (0 ? C and 4 ? C) and time (0 = fresh meat with 24 hours, 7, 14, 21 and 28 days ). In the first study we analyzed the meat of Longissimus thoracis, Semitendinosus and Triceps brachii obtained from the slaughter of castrated males and females, at 24 months old. The bones were measured in the Longissimus thoracis muscle to fat thickness, color of fat (L * a * b *, C, H?), rib eye area and score to the degree of marbling. The final pH were analyzed, water retention capacity, weight loss by cooking, shear strength, color (L * a * b *, C, H?), and the moisture content, dry matter, mineral residue fixed, protein and fat. Meat portions of Longissimus thoracis muscle were collected to evaluate the effect of seven days and 14 days of aging at the end pH, water retention capacity, weight loss by cooking, the shear force on the meat color (L * a * b *, C, H?) and fat color (L * a * b *, C, H?). For the meat of all muscles of no gender effect on the ultimate pH, water retention capacity, by cooking weight loss and protein content. The Longissimus thoracis females received the best score for marbling, showed higher fat content and lower shear strength and Longissimus thoracis males showed greater loin eye area. The maturation of the meat of Longissimus thoracis provided a reduction in shear force and increase in final pH. In the second study, cam portions (400 ? grams) were packed, vacuum, and stored in the cold room temperatures (0 ?C and 4 ?C). They were maintained at these temperatures for 7, 14, 21 and 28 days. They analyzed the pH, water holding capacity, cooking weight loss, shearing force, color (L *, a *, b *, C, M ?). There was no variation in pH as a function of temperature used. However, the pH increase during maturation time. It was observed variation in brightness of the flesh a function of temperature being lower in brightness aged meat at 0 ?C. The content of this red meat increased linearly as a function of aging time and was also influenced by the temperature of ripeness, being higher when aged at 0 ?C. The cooking weight loss also showed a linear increase over time of aging. The water retention capacity and shear strength showed a linear decrease over time of aging. Maturation for 28 days decreased the shear force of titty rump. It is recommended to mature titty rump for 28 days in temperature