Submitted by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-09-08T17:37:16Z No. of bitstreams: 1 RenataHenriqueSantanaTeseParcial2017.pdf: 1215291 bytes, checksum: cc35f4b9a014e3e823968429c1849485 (MD5) / Approved for entry into archive by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-09-08T17:37:28Z (GMT) No. of bitstreams: 1 RenataHenriqueSantanaTeseParcial2017.pdf: 1215291 bytes, checksum: cc35f4b9a014e3e823968429c1849485 (MD5) / Made available in DSpace on 2017-09-08T17:37:28Z (GMT). No. of bitstreams: 1 RenataHenriqueSantanaTeseParcial2017.pdf: 1215291 bytes, checksum: cc35f4b9a014e3e823968429c1849485 (MD5) Previous issue date: 2017-03-31 / Termites are well known for their ability to cause agricultural losses and building damage through their ability to digest lignocellulose; however, termites provide important ecosystem services, such as soil bioturbation and nutrient cycling. Microorganisms in the digestive tract of termites are responsible for several of these functions. Syntermes wheeleri (Syntermitinae) is a litter-feeding termite species of the Termitidae family that is abundant in the Brazilian Cerrado. In this work, we characterized the gut microbiota of S. wheeleri, aiming to better understand the ecosystem function of termite-microbe symbiosis and its evolutionary history. First, the gut microbiota composition of worker termites was described by pyrosequencing phylogenetic markers (amplicons), specifically 16S rRNA (archaea and bacteria) and 18S rRNA (fungi). The resulting bacterial taxonomic profile was then compared with the gut microbiota of several other termite species and feeding guilds. To identify the functional groups and activity of the microbiota in the whole gut and the largest proctodeal segments (P1 and P3), the metagenome and metatranscriptome were sequenced by next-generation sequencing (NGS). Amplicon sequences revealed a high abundance of Firmicutes in S. wheeleri, which was not observed in the other termite species. Most archaea belonged to the methanogen orders, and the most abundant fungal classes were Dothideomycetes, Sordariomycetes, and Eurotiomycetes, which have saprophytic species. Ordination analysis of the relative abundance of bacterial taxa showed that the S. wheeleri gut microbiota did not cluster with the microbiota of termites of different clades and feeding guilds. This finding suggests that both variables are important in microbial assembly in termites. The taxonomic profile generated by NGS analysis of the metagenome was similar to the results of amplicon analysis, with higher Firmicutes abundance in P1 and higher Spirochaetes abundance in P3. Additionally, alignment of ribosomal protein S3 identified possible compartment-specific bacterial lineages of Firmicutes, Spirochaetes, Actinobacteria, Bacteroidetes, and Tenericutes. The results of our study revealed a vast metabolic repertoire of termite gut microbes, which supplies nutrients for the host. Differences identified in the P1 and P3 metabolic pathways are likely caused by differences in O2 concentration. As for biomass conversion, the most abundant glycosyl hydrolases (necessary for lignocellulose digestion) detected in the S. wheeleri gut microbiota are a mixture of those that are most abundant in litter-feeding species (fungus growers), as well as wood-, soil-, and dung-feeding species. In addition, putative bacterial laccases (involved in lignin degradation) were detected. Besides the known function of the termite gut microbiota in carbon and nitrogen cycling, we found evidence of its possible involvement in arsenic cycling. This study adds information about microbial establishment in the termite gut, with functional groups selected based on feeding substrate, instead of specific microbial lineages. In addition, our results show that the metagenome can be used to identify molecules with potential industrial applications, such as enzymes useful in biofuel production. / Os cupins s??o conhecidos por causar perdas agr??colas e danos a edifica????es devido a sua capacidade de digerir celulose. No entanto, os cupins tamb??m fornecem importantes servi??os ecossist??micos como a modifica????o do solo e a ciclagem de nutrientes. Os micro-organismos do trato digestivo dos cupins s??o respons??veis por muitas dessas fun????es. Syntermes wheeleri (Syntermitinae) ?? uma esp??cie de cupim da fam??lia Termitidae, comedora de serapilheira e muito abundante no Cerrado. Neste trabalho caracterizamos a microbiota intestinal de Syntermes wheeleri, buscando esclarecer a fun????o ecossist??mica da simbiose entre cupins e micro-organismos e sua hist??ria evolutiva. Inicialmente, a composi????o da microbiota dos oper??rios foi descrita por meio de pirosequenciamento dos marcadores filogen??ticos (amplicons) 16S rRNA (arqueia e bact??ria) e 18S rRNA (fungo). Em seguida, o perfil taxon??mico de bact??rias foi comparado com o apresentado por diferentes esp??cies de cupins e h??bitos alimentares. Finalmente, para identificar os grupos funcionais presentes e ativos da microbiota no intestino inteiro e em seus compartimentos mais volumosos (primeiro - P1 e terceiro - P3 proctodeo) o metagenoma e metatranscriptoma foram submetidos a sequenciamento de alto rendimento (NGS). As sequ??ncias de amplicons revelaram alta abund??ncia de Firmicutes, n??o observada em outras esp??cies de cupins. A maioria das arqueias pertence ??s ordens de metanog??nicas e as classes de fungos mais abundantes foram Dothideomycetes, Sordariomycetes, e Eurotiomycetes, que possuem membros saprof??ticos. Uma an??lise de ordena????o da abund??ncia relativa dos t??xons de bact??ria mostrou que a microbiota de S. wheeleri n??o agrupou com nenhum clado de cupins da fam??lia Termitidae nem com outras guildas alimentares. Esse resultado indica que ambas as vari??veis afetam a composi????o da microbiota. An??lises do metagenoma apontaram perfil taxon??mico semelhante ao obtido pelas an??lises das sequ??ncias de DNA dos marcadores filogen??ticos, com abund??ncia de Firmicutes maior em P1 e de Spirochaetes maior em P3. Adicionalmente, o alinhamento das prote??nas ribossomais S3, mostrou poss??veis linhagens de bact??rias compartimento-espec??ficas de Firmicutes, Spirochaetes, Actinobacteria, Bacteroidetes e Tenericutes. Os resultados deste estudo revelaram vasto repert??rio metab??lico da microbiota, que fornece nutrientes ao hospedeiro. As diferen??as identificadas nas vias metab??licas de P1 e P3 s??o provavelmente causadas por diferen??as na concentra????o de O2. Em rela????o ?? convers??o de biomassa, as fam??lias de glicosil hidrolases (necess??rias para digest??o da lignocelulose) mais abundantes detectadas na microbiota de S. wheeleri s??o uma mistura daquelas mais abundantes na microbiota de cupins comedores de madeira, de esterco e de cultivadores de fungos. Tamb??m foram detectadas lacases putativas (envolvidas na degrada????o de lignina) de origem bacteriana. Al??m da conhecida fun????o da microbiota de cupins no ciclo do carbono e do nitrog??nio, encontramos evid??ncias de sua poss??vel participa????o no ciclo do ars??nio. Este estudo adiciona informa????o sobre o estabelecimento da microbiota no intestino de cupins, com sele????o de grupos funcionais baseados no alimento, ao inv??s de linhagens microbianas espec??ficas. Adicionalmente, os dados aqui gerados podem ser explorados na produ????o de biocombust??veis e em outros processos biotecnol??gicos.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-17T18:08:09Z No. of bitstreams: 2 rogerio_carvalho_veloso.pdf: 757216 bytes, checksum: fe993450a9e7686366dfe072342dd019 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-17T18:08:35Z (GMT) No. of bitstreams: 2 rogerio_carvalho_veloso.pdf: 757216 bytes, checksum: fe993450a9e7686366dfe072342dd019 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2015-12-17T18:08:35Z (GMT). No. of bitstreams: 2 rogerio_carvalho_veloso.pdf: 757216 bytes, checksum: fe993450a9e7686366dfe072342dd019 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2012 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Objetivou-se com este trabalho comparar o padr?o de crescimento, avaliar o desempenho, as caracter?sticas de carca?a e, verificar a diverg?ncia gen?tica por meio de t?cnicas de an?lise multivariada de diferentes gen?tipos de aves tipo caipira. Foram utilizados 840 pintos de um dia, machos, distribu?dos em delineamento inteiramente casualizado, dos seguintes gen?tipos: Caboclo, Carij?, Colorpak, Gigante Negro, Pesad?o Vermelho, Pesco?o Pelado e Tricolor. Para a determina??o das curvas de crescimento do peso corporal das aves, os dados coletados foram avaliados a partir dos modelos n?o-lineares: Brody, Gompertz, Log?stico, Richards e von Bertalanffy. Foi empregado o ?proc nlin? do SAS, utilizando o m?todo interativo de Gauss-Newton. Os crit?rios utilizados para escolha do modelo de melhor ajuste da curva de crescimento foram o coeficiente de determina??o, o desvio padr?o assint?tico, o desvio m?dio absoluto dos res?duos e o ?ndice assint?tico. O estudo do crescimento relativo dos cortes foi realizado mediante o modelo da equa??o alom?trica de Huxley. As caracter?sticas de desempenho (convers?o alimentar, ganho em peso m?dio di?rio, consumo de ra??o m?dio di?rio) foram avaliadas em quatro per?odos: 1 a 28, 1 a 56, 1 a 70 e 1 a 84 dias de idade. As caracter?sticas de carca?a (peso e rendimento de carca?a, peito e pernas) foram obtidas a partir do abate de 2 aves por boxe, aos 85 dias de idade. O peso corporal foi medido ao nascimento, 14, 28, 42, 56, 70 e 84 dias de idade. As an?lises estat?sticas foram realizadas utilizando-se o ?proc glm? do SAS. O desempenho dos gen?tipos tamb?m foi avaliado por meio da an?lise de vari?ncia multivariada e da fun??o discriminante linear de Fisher, usando os testes do maior autovalor de Roy e da uni?o-interse??o de Roy para as compara??es m?ltiplas. O estudo da diverg?ncia gen?tica foi feito por meio da an?lise por vari?veis can?nicas e pelo m?todo de otimiza??o de Tocher. Apenas as equa??es propostas por Gompertz, von Bertalanffy e Log?stico atingiram a converg?ncia, sendo que o modelo de von Bertalanffy o mais adequado para descrever o crescimento das aves. Todos os gen?tipos apresentaram crescimento alom?trico tardio, indicando que o crescimento do peito ? lento em rela??o ? carca?a. Verificou-se que em todos os per?odos, as aves do gen?tipo Colorpak apresentaram maior peso corporal, consumo de ra??o m?dio di?rio, ganho em peso m?dio di?rio e convers?o alimentar. Entretanto, os gen?tipos Caboclo e Gigante Negro apresentaram os piores desempenhos. Quanto ao rendimento de cortes pode ser observado que o gen?tipo Tricolor diferiu estatisticamente somente do Colorpak o para o rendimento de pernas. Para o rendimento de peito o Carij? e o Pesad?o Vermelho diferiu estatisticamente dos gen?tipos Caboclo e Gigante Negro, n?o diferindo dos demais. As duas primeiras vari?veis can?nicas explicaram 97,41% da varia??o entre os gen?tipos. A escolha do gen?tipo para cria??o deve ser feita de acordo com o interesse de mercado, pois h? diferen?as no desempenho e no rendimento de carca?a e dos cortes. A diverg?ncia gen?tica entre os gen?tipos avaliados permitiu a forma??o de quatro grupos com os seguintes gen?tipos: grupo 1 - Colorpak, grupo 2 - Pesad?o Vermelho e Pesco?o Pelado, grupo 3 - Carij? e Tricolor e grupo 4 - Caboclo e Gigante Negro. / 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 work was to compare the growth pattern, evaluate performance, carcass characteristics, and verify the genetic diversity by means of multivariate analysis of different genotypes in alternative lines of broiler chickens. We used 840 day old chicks, males distributed in a completely randomized design, the following genotypes: Caboclo, Carij?, Colorpak, Gigante Negro, Pesad?o Vermelho, Pesco?o Pelado and Tricolor. To determine the growth curves of the body weight of birds, collected data were evaluated from the nonlinear models: Brody, Gompertz, Logistic, Richards and von Bertalanffy. Was used "proc nlin" of SAS, using the iterative method of Gauss-Newton. The criteria used to choose the best model of the growth curve were the coefficient of determination, the asymptotic standard deviation, the mean absolute deviation of the waste and the asymptotic index. The study of the relative growth of the sections was performed using the model of Huxley's allometric equation. The performance characteristics (feed conversion, average daily weight gain, average daily feed intake) were evaluated in four periods: 1-28, 1-56, 1-70 and 1-84 days old. The carcass traits (weight and carcass yield, breast and leg) were obtained from the slaughter of two birds per pen, at 84 days old. Body weight was measured at birth, 14, 28, 42, 56, 70 and 84 days of age. Statistical analyzes were performed using the "proc glm" SAS. The performance of genotypes was also evaluated by multivariate analysis of variance and Fisher's linear discriminant function, using the tests of the largest eigenvalue of Roy and the Roy union-intersection for multiple comparisons. The study of genetic diversity was done by canonical variate analysis and the method of Tocher. Only the equations proposed by Gompertz, von Bertalanffy and Logistic reached convergence, and the von Bertalanffy model more appropriate to describe the growth of the birds. All genotypes showed late allometric growth, indicating that breast growth is slow relative to the housing. It was found that in all periods, the birds Colorpak genotype had higher body weight, average daily feed intake, average daily weight gain and feed conversion. However, the genotypes Caboclo and Gigante Negro had the worst performances. The yield of the cuts can be seen that the genotype Tricolor significantly different only from Colorpak to yield the legs. For breast meat yield Carij? and the Pesad?o Vermelho significant different genotypes Caboclo and Gigante Negro, not differing from the others. The first two canonical variables accounted for 97.41% of the variation among genotypes. The choice of the genotype for breeding should be done according to market interest, because there are differences in performance and carcass yield and cuts. The genetic divergence between the genotypes allowed the formation of four groups with the following genotypes: group 1 - Colorpak, group 2 - Pesad?o Vermelho and Pesco?o Pelado, group 3 - Carij? and Tricolor and group 4 - Caboclo and Gigante Negro.

Submitted by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-05-23T17:19:03Z No. of bitstreams: 1 DIS_BIANCA_MORO_CORREA_PARCIAL.pdf: 139620 bytes, checksum: 7b6664e8dedb350b29c7a7898c664250 (MD5) / Made available in DSpace on 2017-05-23T17:19:03Z (GMT). No. of bitstreams: 1 DIS_BIANCA_MORO_CORREA_PARCIAL.pdf: 139620 bytes, checksum: 7b6664e8dedb350b29c7a7898c664250 (MD5) Previous issue date: 2017-01-19 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Objectives: The aims of this study were to evaluate the elastic modulus and the monomer conversion of self- etching adhesives (Single Bond Universal and Clearfil SE Bond) and two- steps etch-and-rinse adhesives (primer + adhesive in the same bottle, Adper Single Bond 2 and Gluma 2Bond). The null hypothesis was that two-step adhesive systems will have higher degree of monomer conversion and a higher elastic modulus than the self-etching ones. Materials and methods: On dentin disks obtained from 10 extracted third molars were applied self- etching and etch-and-rinse adhesive systems according to manufacturer's instructions and light cured by a LED light. Right after, the specimens were submitted to elastic modulus by atomic force with 50g load for 10s. The degree of conversion of the adhesives was calculated by Fourier Transform Infrared Spectroscopy (FTIR). Results: The Single Bond 2 adhesive system presented the highest monomer conversion result (88%) followed by Universal Single Bond (79%), Gluma 2Bond (71%) and Clearfil SE Bond (69%). The results for elastic modulus (MPa) were (means followed by the same letter did not present statistical difference for Tukey (p?0,05)): Single Bond 2, 2319 (A); Single Bond Universal, 2051 (AB); Gluma, 2038 (AB); Clearfil SE Bond, 1788 (B). Conclusion: lt is not possible to infer that, as a rule, conventional adhesives systems with combined primer and adhesives will have a better performance in terms of the degree of monomer conversion as well as modulus of elasticity when compared to self-etching agents. / Objetivos: Este trabalho teve por objetivos avaliar o m?dulo de elasticidade e a taxa de convers?o de mon?meros de sistemas adesivos autocondicionantes (Single Bond Universal e Clearlil SE Bond) e convencionas de dois passos (primer+adesivo no mesmo frasco, Adper Single Bond 2 e Gluma 2Bond). A hip?tese inicial foi que os sistemas adesivos de dois passos ter?o maior grau de convers?o de mon?meros e maior m?dulo de elasticidade que os autocondicionantes. Materiais e m?todos: sobre discos de dentina obtidos a partir de 10 molares extra?dos foram aplicados os sistemas adesivos de condicionamento ?cido total e os autocondicionantes de acordo com a recomenda??o dos fabricantes de cada material e fotoativados com luz LED. Ap?s, os corpos de prova foram submetidos ? medi??o de m?dulo de elasticidade por for?a at?mica com carga de 50g pelo tempo de 10s. O grau de convers?o dos adesivos foi calculado usando espectroscopia por infravermelho (FTIR). Resultados: O sistema adesivo Single Bond 2 apresentou o maior resultado de convers?o de mon?meros (88%) seguido do Single Bond Universal (79%), Gluma (71%) e Cleartil SE Bond (69%). Os resultados para o m?dulo de elasticidade (MPa) foram (m?dias seguidas de mesma letra n?o apresentam diferen?a estat?stica para Tukey (p?0,05)): Single Bond 2, 2319(A); Single Bond Universal, 2051(AB); Gluma, 2038(AB); Clearfil SE Bond, 1788(B). Conclus?o: N?o ? poss?vel inferir que via de regra pelo fato de serem os sistemas adesivos convencionais com primer e adesivos combinados ter?o um melhor desempenho quanto ao grau de convers?o de mon?meros bem como m?dulo de elasticidade quando comparados aos autocondicionantes.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-06-23T17:57:14Z No. of bitstreams: 1 2016 - Camila Domingos dos Anjos.pdf: 1678010 bytes, checksum: fc61bea8918fef450e39c7005d074af1 (MD5) / Made available in DSpace on 2017-06-23T17:57:14Z (GMT). No. of bitstreams: 1 2016 - Camila Domingos dos Anjos.pdf: 1678010 bytes, checksum: fc61bea8918fef450e39c7005d074af1 (MD5) Previous issue date: 2016-04-25 / CAPES / The present dissertation seeks to analyse the initiatives of coercion to convert the hindu widows and bailadeiras (dancing girls) in Goa, between 1597 to 1606. We will research the pretentions of royal and ecclesiastical agents to convert and integrate the bailadeiras to a Christian project of colonization, from the decrees issued in the five provincial councils of Goa (made in the chronological cut above), of the legislation contained in the ?Book of the Father of the Christians?, from the royal determinations and from the viceroys of the State of India. We will investigate how the interdependence of the political and religious power favored the issuance of decrees that aimed at homogenizing the local societies, precisely the bailadeiras and the hindu widows from a Christian discipline. / A presente disserta??o busca analisar as iniciativas de coer??o ? convers?o de vi?vas hindus e bailadeiras em Goa, entre 1567 a 1606. Pesquisaremos as pretens?es dos agentes r?gios e eclesi?sticos em converter e integrar as bailadeiras a um projeto crist?o de coloniza??o, a partir dos decretos emitidos nos cinco conc?lios provinciais de Goa (realizados no recorte cronol?gico supracitado), da legisla??o contida no ?Livro do Pai dos Crist?os?, das determina??es r?gias e dos vice-reis do Estado da ?ndia. Investigaremos assim, como a interdepend?ncia do poder pol?tico e religioso favoreceu a emiss?o de decretos que visavam homogeneizar as sociedades locais, precisamente bailadeiras e as vi?vas hindus, a partir de uma disciplina crist?.

Submitted by PPG Psicologia (psicologia-pg@pucrs.br) on 2018-06-08T22:34:55Z No. of bitstreams: 1 MAILA_ROSSATO_HOLZ_DIS.pdf: 1327596 bytes, checksum: 8e58e96dcb1cc4cc6fa912a07c9c18a1 (MD5) / Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-06-20T11:37:36Z (GMT) No. of bitstreams: 1 MAILA_ROSSATO_HOLZ_DIS.pdf: 1327596 bytes, checksum: 8e58e96dcb1cc4cc6fa912a07c9c18a1 (MD5) / Made available in DSpace on 2018-06-20T11:52:03Z (GMT). No. of bitstreams: 1 MAILA_ROSSATO_HOLZ_DIS.pdf: 1327596 bytes, checksum: 8e58e96dcb1cc4cc6fa912a07c9c18a1 (MD5) Previous issue date: 2018-03-02 / Both health aging and mild cognitive impairment are associated with the existence of neurocognitive profiles and sociodemographic and clinical factors that may be considered as a risk for conversion to a major neurocognitive disorder. However, it is known that within this continuum between normal and pathological aging there are heterogeneous characteristics that are still little explored that need to be better understood to identify factors of cognitive reserve and demential risk. Thus, the present dissertation is composed of two studies, the first with the objective of verifying if there are subgroups of executive processing in the elderly with MCI and controls; secondarily, to examine whether the latent executive profiles are differentiated by sociodemographic, clinical and mnemonic variables. In this study 120 elderly adults (50 controls and 70 MCI patients) participated in a complete neuropsychological evaluation battery. A latent profile analysis was performed to verify possible subgroups of executive functions (EF), followed by a multivariate ANOVA controlling years of formal education and frequency of reading and writing habits (FRWH). Three executive profiles were found (1) Profile 1 with processing speed, executive attention and visuospatial initiation impairment (23.33% of the sample); (2) Profile 2 with intermediate performance in EF (45.84% of the sample); and (3) Profile 3 with superior performance in working memory, planning and verbal organization (30.83% of the sample). Comparative analysis showed differences in education, economy class, FRWH, global cognition, symptoms of depression, immediate episodic memory, recent memory, visual memory, recognition of new information learned and prospective memory. In all variables, Profile 1 had worse performance and Profile 3 had the best performance. The second study aimed at evaluating cognitive processing evolution (mnemonic, executive, linguistic, praxis and attentional), socio-demographic and clinical characteristics of elderly individuals with MCI and elderly controls, as well as verifying whether the elderly will convert the clinical condition and if there were risk factors for this conversion. In study 2, 65 elderly adults (41 MCI patients and 24 controls) participated in two complete neuropsychological assessments (time 1 and time 2). ANOVA analyzes of repeated measures were performed, controlling years of formal education and FRWH. There were differences in the evaluation one year later in the working memory, visual episodic memory, and visual and spatial cognitive flexibility variables. Eighteen participants (27.69%) converted to the clinical condition. The 11 functionality explained 12.5% of clinical conversion. The results of these two studies suggest that there is heterogeneity in the neurocognitive and executive profile within healthy aging and MCI that need to be monitored longitudinally to identify the continuum of these impairments. Variables such as processing speed, working memory and inhibitory control are essential executive measures for monitoring beyond episodic memory evaluation. Future studies should investigate transversally and longitudinally MCI severity, using factorial analyzes and composite scores of cognitive components, more specifically from executive components. These measures may be quantitative and qualitative measures of better measurement of cognitive impairment extent in elderly patients, allowing more accurate and earlier diagnoses towards the implementation of specific neurocognitive stimulation programs. / O envelhecimento seja ele saud?vel ou com Comprometimento Cognitivo Leve (CCL) tende a estar relacionado ? exist?ncia de perfis neurocognitivos e fatores sociodemogr?ficos e cl?nicos que podem ser considerados de risco para convers?o para um transtorno neurocognitivo maior. Contudo, sabe-se que dentro desse cont?nuo entre o envelhecimento normal e patol?gico existem caracter?sticas heterog?neas ainda pouco exploradas que necessitam ser mais bem compreendidas para identifica??o de fatores de reserva cognitiva e de risco demencial. Assim, a presente disserta??o ? composta por dois estudos, sendo o primeiro com o objetivo de verificar se h? subgrupos de processamento executivo em idosos com CCL e controles; secundariamente, examinar se os perfis executivos latentes se diferenciam por vari?veis sociodemogr?ficas, cl?nicas e mnem?nicas. Nesse estudo participaram 120 adultos idosos (50 controles e 70 com CCL) que realizaram uma bateria de avalia??o neuropsicol?gica completa. Foi conduzida uma an?lise de perfis latentes para verificar poss?veis subgrupos de fun??es executivas, seguida de uma ANOVA multivariada controlando escolaridade e frequ?ncia de h?bitos de leitura e de escrita (FHLE). Foram encontrados tr?s perfis executivos (1) Perfil 1 com preju?zos de velocidade de processamento, aten??o executiva e inicia??o visuoespacial (23,33% da amostra); (2) Perfil 2 com desempenho intermedi?rio em FE (45,84% da amostra); e (3) Perfil 3 com desempenho superior em mem?ria de trabalho, planejamento e organiza??o verbal (30,83% da amostra). A an?lise comparativa mostrou diferen?as quanto ? escolaridade, classe econ?mica, FHLE, cogni??o global, sintomas de depress?o, mem?ria epis?dica imediata e recente, mem?ria visual, reconhecimento de novas informa??es aprendidas e mem?ria prospectiva, sendo que em todas as vari?veis o Perfil 1 teve pior desempenho e o Perfil 3 teve o melhor desempenho. J? o segundo estudo, teve como objetivo avaliar a evolu??o do processamento cognitivo (mnem?nico, executivo, lingu?stico, pr?xico e atencional), sociodemogr?fico e cl?nico de idosos com CCL e idosos controles verificando, ainda, se os idosos iriam converter o quadro cl?nico e se existiriam fatores de risco para essa convers?o. No estudo 2 participaram 65 adultos idosos (41 CCL e 24 controles) no qual passaram por duas avalia??es neuropsicol?gicas completas (tempo 1 e tempo 2). Foram realizadas an?lises de ANOVA de medidas repetidas, controlando escolaridade e FHLE. Houve diferen?as na avalia??o um ano depois nas vari?veis de mem?ria de trabalho, mem?ria epis?dica visual, e flexibilidade cognitiva visuoespacial. 9 Dezoito participantes da amostra (27,69%) converteram o quadro cl?nico. A funcionalidade explicou 12,5% da convers?o do quadro cl?nico. Os resultados dos dois estudos sugerem que h? uma heterogeneidade no perfil neurocognitivo e executivo dentro do envelhecimento saud?vel e com CCL que precisam ser acompanhadas longitudinalmente para identificar o cont?nuo desses preju?zos. Percebe-se que vari?veis como velocidade de processamento, mem?ria de trabalho e controle inibit?rio s?o medidas executivas essenciais para acompanhamento al?m da mem?ria epis?dica. Futuros estudos que investiguem de forma transversal e longitudinal a severidade do CCL a partir de an?lises fatoriais e de escores compostos dos componentes cognitivos, mais especificamente de componentes executivos, podem ser medidas quantitativas e qualitativas de melhor mensura??o da dimens?o do preju?zo cognitivo em idosos, permitindo diagn?sticos mais acurados e mais precoces rumo ? implementa??o de programas de estimula??o neurocognitiva espec?fica.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-26T23:16:09Z No. of bitstreams: 1 MonickarlaTeixeiraPegadoDaSilva_DISSERT.pdf: 2972749 bytes, checksum: 333ef217ee5461818b38fff8de7cfdeb (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-08-31T00:12:48Z (GMT) No. of bitstreams: 1 MonickarlaTeixeiraPegadoDaSilva_DISSERT.pdf: 2972749 bytes, checksum: 333ef217ee5461818b38fff8de7cfdeb (MD5) / Made available in DSpace on 2016-08-31T00:12:48Z (GMT). No. of bitstreams: 1 MonickarlaTeixeiraPegadoDaSilva_DISSERT.pdf: 2972749 bytes, checksum: 333ef217ee5461818b38fff8de7cfdeb (MD5) Previous issue date: 2016-02-23 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Suportes catal?ticos ? base de ?xido de alum?nio foram sintetizados pelo m?todo e esferas h?bridas utilizando carboximetilcelulose (CMC) como precursor org?nico (template) e nitrato de alum?nio como precursor inorg?nico. As caracteriza??es foram realizadas por an?lises de termogravimetria (TG), difra??o de raios-X (DRX), espectroscopia no infravermelho por transformada de fourier (FTIR), microscopia eletr?nica de varredura (MEV) e fisissor??o N2. Os materiais sintetizados foram testados na rea??o de convers?o do glicerol em fase g?s. Os estudos da s?ntese indicaram que as caracter?sticas do biopol?mero (grau de substitui??o e de polimeriza??o) influenciam diretamente no valor m?ximo da rela??o entre o precursor org?nico e inorg?nico para a forma??o das esferas h?bridas. As propriedades f?sico-qu?micas do material final (cristalinidade, porosidade, ?rea espec?fica e morfologia) mostraram uma depend?ncia direta com as propriedades do biopol?mero (grau de substitui??o e de polimeriza??o), indicando a versatilidade desta rota s?ntese. Os espectros de FTIR confirmaram a forma??o de um material h?brido quando se compara o espectro da CMC pura com os s?lidos obtidos ap?s a secagem. Os resultados de DRX mostraram um perfil de material amorfo para algumas amostras. Para alguns s?lidos foi poss?vel identificar a forma??o de uma fase cristalina relacionada com a alumina hidratada, ?xido de alum?nio e ?xido de cobre. As imagens obtidas por MEV indicaram a forma??o de um material com morfologia semelhante a uma esponja ap?s a calcina??o, caracter?stico de um s?lido altamente poroso. O perfil de adsor??o/dessor??o de N2 confirma a forma??o de materiais contendo micro-mesoporos com uma ?rea espec?fica entre 50-162 m2.g-1 para os suportes e 112-303 m2.g-1 para os catalisadores com cobre, indicando um aumento ?rea ap?s a adi??o do Cu por impregna??o devido a redissolu??o e recristaliza??o da fase alumina. Testes catal?ticos indicaram que os ?xidos s?o ativos e seletivos para a convers?o do glicerol (92-15%) a bioprodutos de alto maior valor agregado, confirmando a viabilidade do m?todo de s?ntese. / Catalytic supports based on aluminum oxide were synthesized by the method of hybrid spheres using carboxymethylcellulose (CMC) as organic precursor (template) and aluminum nitrate as inorganic precursor. The characterizations were performed by thermal chemical analysis (TGA), X-Ray diffraction (XRD), fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and N2 physisorption. The study of synthesis indicated that the characteristics of the biopolymer (degree of substitution and polymerization) directly influence on the maximum value of the ratio between the organic and inorganic precursor for the formation of hybrid spheres. The physicochemical properties of the final material (crystallinity, porosity, surface area and morphology) showed a direct dependence on the biopolymer properties (degree of substitution and polymerization), indicating the versatility of this synthesis route. The FTIR spectra confirm the formation of a hybrid material when comparing the pure CMC spectrum with the obtained solids after drying. The XRD results show a profile of amorphous and crystalline material for the different samples. For some solids were possible to identify the formation of a crystalline phase related to the hydrated alumina, aluminium oxide and copper oxide. The images obtained by SEM analysis showed the formation of a material with sponge-like morphology after calcination, characteristic of highly porous solid. The N2 adsorption/desorption isotherm profile confirms the formation of micro-mesoporous materials with a specific surface area between 50-162 m2.g-1 for the supports and 112-303 m2.g-1 for the copper-based catalysts, indicating an increase in the area after the addition of Cu by impregnation due to redissolution and recrystallization of alumina phase. Catalytic tests were tested in the glycerol conversion reaction (92-15%) to added value products in order to confirm their real viability.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T12:04:48Z No. of bitstreams: 2 maria_teresa_polcaro_silva.pdf: 541921 bytes, checksum: 0d8c69748e86719c4e99ab0805589c84 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T12:06:12Z (GMT) No. of bitstreams: 2 maria_teresa_polcaro_silva.pdf: 541921 bytes, checksum: 0d8c69748e86719c4e99ab0805589c84 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T12:06:45Z (GMT) No. of bitstreams: 2 maria_teresa_polcaro_silva.pdf: 541921 bytes, checksum: 0d8c69748e86719c4e99ab0805589c84 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Made available in DSpace on 2015-01-13T12:06:46Z (GMT). No. of bitstreams: 2 maria_teresa_polcaro_silva.pdf: 541921 bytes, checksum: 0d8c69748e86719c4e99ab0805589c84 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Previous issue date: 2013 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Objetivou-se, com esse trabalho, avaliar caracter?sticas de desempenho e de carca?a de tr?s gen?tipos comerciais de frangos de corte, nos per?odos de 1 a 35, 1 a 42 e 1 a 49 dias de idade. Foram utilizados 2.970 pintos de um dia, machos e f?meas, sexados, de tr?s gen?tipos comerciais de frangos de corte (Cobb 500, Hubbard Flex e Ross 308). Foram utilizados tr?s programas nutricionais, com diferentes n?veis de amino?cidos. As aves foram distribu?das em delineamento inteiramente casualizado, em ensaio fatorial 3x3x2 (gen?tipo x ra??o x sexo), com cinco repeti??es e 33 aves/parcela. As caracter?sticas convers?o alimentar (CA), ganho em peso m?dio di?rio (GPMD) e consumo de ra??o m?dio individual (CR) peso corporal aos 35 (PC35), 42 (PC42) e 49 (PC49) dias de idade. Duas aves de cada repeti??o foram abatidas aos 35, 42 e 49 dias de idade para se avaliarem as caracter?sticas de carca?a: peso corporal ao abate, peso e rendimento da carca?a, peso e rendimento dos cortes (peito, pernas e asas). Verificou-se, no per?odo de 1 a 35 dias, intera??o entre gen?tipo x sexo para GPMD e PC35. No per?odo de 1 a 42 dias de idade, n?o houve diferen?as entre os gen?tipos para PC42, CR, GPMD ou CA. Verificou-se intera??o significativa sexo x gen?tipo para peso do peito, sendo que, entre os frangos de corte machos, as aves Cobb 500 apresentaram maior peso do peito, n?o diferindo dos machos Ross, que por sua vez n?o diferiram dos machos Hubbard. Por fim, no per?odo de 1 a 49 dias de idade, n?o houve diferen?a entre os gen?tipos para CR, GPMD ou PC49. De maneira geral, os desempenhos das aves Cobb 500, Hubbard Flex e Ross 308 n?o foram muito diferentes, sendo essas diferen?as mais presentes nas caracter?sticas de carca?a. A ra??o basal apresentou, de forma geral, melhores resultados que as ra??es com mais ou menos 10% de amino?cidos, evidenciando a boa adequa??o dos n?veis nutricionais da mesma. Os machos apresentaram-se superiores, de forma geral, para as caracter?sticas de desempenho e de carca?a, em rela??o ?s f?meas. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT The objective of this study was to evaluate performance characteristics and carcass traits of three genotypes of commercial broilers in the periods 1-35, 1-42 and 1-49 days of age. We used 2,970 day-old chicks, male and female, sexed, three cultivars of commercial broilers (Cobb 500, Hubbard Flex and Ross 308). We used three nutritional programs with different levels of amino acids. The broilers were distributed in a completely randomized design in factorial design 3x3x2 (genotype x diet x sex) with five replications and 33 birds / plot. The characteristics of feed conversion (FC) , average daily weight gain (ADG) and feed intake average individual (CR) body weight at 35 (PC35) , 42 (PC42) and 49 (PC49) days of age . Two birds per replicate were slaughtered at 35, 42 and 49 days of age to evaluate carcass traits: body weight at slaughter weight and carcass yield, weight and yield of cuts (breast, legs and wings). It was found in the period 1-35 days genotype x sex interaction for ADG and PC35. In the period 1-42 days of age, there were no differences among genotypes for PC42, CR, DWG or CA. There was significant interaction sex x genotype for breast weight, and between broilers, Cobb 500 had higher breast weight, did not differ from Ross 308 males, who in turn did not differ from males Hubbard. Finally, in the period 1-49 days of age, there was no difference between genotypes CR, DWG or PC49. In general, the performance of broilers Cobb 500, Hubbard Flex and Ross 308 were not very different, and these differences were more present in carcass characteristics. The basal diet showed, in general, better results than diets with more or less 10 % of amino acids, which shows the good nutritional adequacy of the same. The males showed themselves superior, overall, to the performance characteristics and carcass, compared to females.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-09T22:51:25Z No. of bitstreams: 1 EmanueleDaSilvaRodriguesMontalvao_TESE.pdf: 1580309 bytes, checksum: 39bf0d8e4a7d3087d516e4317b43d692 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-08-10T23:27:44Z (GMT) No. of bitstreams: 1 EmanueleDaSilvaRodriguesMontalvao_TESE.pdf: 1580309 bytes, checksum: 39bf0d8e4a7d3087d516e4317b43d692 (MD5) / Made available in DSpace on 2016-08-10T23:27:44Z (GMT). No. of bitstreams: 1 EmanueleDaSilvaRodriguesMontalvao_TESE.pdf: 1580309 bytes, checksum: 39bf0d8e4a7d3087d516e4317b43d692 (MD5) Previous issue date: 2016-01-26 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Este trabalho tem como objetivo propor um novo modelo de metasuperf?cie com c?lula b?sica simplificada, capaz de converter sinais linearmente polarizados gerados por um arranjo de antenas planar em sinais circularmente polarizados, para a faixa de frequ?ncia ISM (2,45 GHz), apresentando uma boa largura de banda de perda de retorno e de raz?o axial. Para poder estudar o comportamento da estrutura proposta, a metasuperf?cie ? acoplada a tr?s estruturas diferentes. Primeiro s?o feitos testes iniciais com a metasuperf?cie acoplada a uma antena de microfita em sua configura??o simples. Em seguida a metasuperf?cie ? utilizada acoplada a um arranjo com dois elementos do tipo patch. E posteriormente ela ? acoplada a um arranjo otimizado, que utiliza um toco em sua alimenta??o principal, para obter um melhor casamento de imped?ncias. As estruturas s?o analisadas numericamente atrav?s do Ansoft HFSS? e para validar esses resultados, as estruturas s?o caracterizadas experimentalmente. S?o apresentadas as caracter?sticas de transmiss?o simuladas e medidas. Os resultados experimentais mostram uma boa concord?ncia com os resultados simulados. A estrutura aqui proposta apresenta a vantagem de atender as caracter?sticas desejadas, com uma geometria simples de ser constru?da e utilizando um substrato de baixo custo (FR-4). / This work aims to propose a new model of metasurface with simplified basic cell, able to convert linearly polarized signals generated by planar antenna array in circularly polarized signals, for the ISM frequency band (2.45 GHz), with good bandwidth of return loss and axial ratio. To study the behavior of the proposed structure, the metasurface is coupled to three different structures. First, initial tests are made with the metasurface coupled to a microstrip antenna in its simple configuration. Then the metasurface is coupled to an array with two elements of patch type. And later it is coupled to an optimized array, that uses a stub in its main feed, to get a better impedance matching. The structures are analyzed numerically through Ansoft HFSS?, and to validate these results, the structures are characterized experimentally. The characteristics of transmissions simulated and measures are presented. A good agreement between simulated and measured results was obtained. The structure proposed here has the advantage of meeting the desired characteristics, with a simple geometry to be built using a low-cost substrate (FR-4).

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-12-29T16:36:10Z No. of bitstreams: 1 AugustoCesarPereiraDaSilvaMontalvao_TESE.pdf: 3356285 bytes, checksum: 91694fd2667b473c4c31ff9be48f2171 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-01-02T18:07:35Z (GMT) No. of bitstreams: 1 AugustoCesarPereiraDaSilvaMontalvao_TESE.pdf: 3356285 bytes, checksum: 91694fd2667b473c4c31ff9be48f2171 (MD5) / Made available in DSpace on 2017-01-02T18:07:35Z (GMT). No. of bitstreams: 1 AugustoCesarPereiraDaSilvaMontalvao_TESE.pdf: 3356285 bytes, checksum: 91694fd2667b473c4c31ff9be48f2171 (MD5) Previous issue date: 2016-07-04 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Este trabalho tem como objetivo propor uma nova estrutura capaz de converter sinais linearmente polarizados gerados por uma antena de microfita em sinais circularmente polarizados, para duas bandas de opera??o (2,45 GHz e 5,8 GHz), para aplica??o em leitores RFID port?teis, usando duas metasuperf?cies miniaturizadas. Para poder estudar o comportamento da estrutura proposta, s?o utilizados tr?s layouts diferentes. Primeiro s?o feitos testes iniciais de simula??o, utilizando a primeira metasuperf?cie acoplada ? antena. Em seguida, a antena ? testada acoplada ? segunda metasuperf?cie. E posteriormente a antena ? acoplada ?s duas metasuperf?cies. As estruturas s?o analisadas numericamente atrav?s do Ansoft HFSS? e para validar esses resultados, as estruturas s?o caracterizadas experimentalmente. S?o apresentadas as caracter?sticas de transmiss?o simuladas e medidas. Os resultados experimentais mostram uma boa concord?ncia com os resultados simulados. A estrutura aqui proposta apresenta a vantagem de atender ?s caracter?sticas desejadas nas duas bandas de interesse, conseguindo obter excelentes valores de largura de banda de perda de retorno, bem como de raz?o axial, sendo uma estrutura simples de ser constru?da e com baixo custo. / This work aims to propose a new structure able to convert signals linearly polarized generated by a microstrip antenna for circularly polarized signals at two operating bands (2.45 GHz and 5.8 GHz), for use in portable RFID readers, using two miniaturized metasurfaces. In order to study the behavior of the proposed structure, three different layouts are used. First initial simulation tests are made, using the first metasurface coupled to the antenna. Then, the antenna is tested coupled to the second metasurface. Posteriorly the antenna is coupled to the two metasurfaces. The structures are analyzed numerically through ANSYS HFSS?, and to validate these results, the structures are characterized experimentally. The characteristics of transmissions simulated and measures are presented. A good agreement between simulated and measured results was obtained. The structure proposed here has the advantage to meet desired characteristics in two bands of interest, obtaining excellent values of return loss wideband, as well as the axial ratio, being a simple structure to be constructed and with low cost.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2016-08-24T23:34:30Z No. of bitstreams: 1 Disserta??oLizandras.pdf: 1862376 bytes, checksum: e311ea5249df406de106f221d3b2f187 (MD5) / Made available in DSpace on 2016-08-24T23:34:30Z (GMT). No. of bitstreams: 1 Disserta??oLizandras.pdf: 1862376 bytes, checksum: e311ea5249df406de106f221d3b2f187 (MD5) Previous issue date: 2014-07-28 / Funda??o de Amparo ? Pesquisa do Estado da Bahia - FAPEB / This dissertation examines the conversion and religious transit of worshipers of Candombl? and the Nossa Senhora da Boa Morte Brotherhood to protestant denominations in Cachoeira -Ba, between 1980 and 2007. We investigated the prevalence of women in conversions by analyzing the main reasons why they decided to seek another religious affiliation, as well as the reasons for men's adherence to Protestant groups. We recognized that women's motivations were related to marital and/or family issues, while for men they referred to personal matters. We analyzed the demonization of Candombl? by evangelical groups, especially the Igreja Universal do Reino de Deus as well as the speech of practitioner of Candombl? before the disqualification practices of Candombl? and the numerical growth of conversions practitioner of Candombl? to the Protestant denominations. The applicant was disqualified and demonization of african-Brazilian religious practices. Observe how new religious affiliation and religious transit influence on family relationships, analyzing how conflict and family tensions began to be administered by the newly converted. It was recurrent the disqualification and demonization of african-Brazilian religious practices. We observe how his new religious affiliation and religious transit had influenced family relationships, analyzing how conflict and family tensions began to be administered by the newly converted. / RESUMO Esta disserta??o analisa a convers?o e o tr?nsito religioso de adeptos do Candombl? e da Irmandade de Nossa Senhora da Boa Morte para grupos pentecostais e neopentecostais, em Cachoeira-Ba, entre 1980 e 2007. Investigamos a predomin?ncia de mulheres nas convers?es, analisando os principais motivos pelos quais elas decidiram buscar outra filia??o religiosa, bem como as raz?es masculinas para a ades?o a grupospentecostais e neopentecostais. Identificamos que as motiva??es femininas mais frequentes relacionaram-se as quest?es conjugais e/ou familiares, enquanto para os homens referiram-se a assuntos pessoais. Analisamos a demoniza??o do Candombl? por parte de grupospentecostais e neopentecostais, especialmente a Igreja Universal do Reino de Deus, bem como o discurso dos candomblecistas diante das pr?ticas de desqualifica??o do Candombl? e do crescimento num?rico das convers?es de candomblecistas para grupos pentecostais e neopentecostais. Foi recorrente a desqualifica??o e demoniza??o das pr?ticas religiosas afro-brasileiras. Investigamoscomo as novas filia??es religiosas e o tr?nsito religioso influenciaram as rela??es familiares, analisando de que maneira os conflitos e tens?es familiares passaram a ser administrados pelos rec?m convertidos, bem como pelos familiares candomblecistas.