Made available in DSpace on 2016-04-28T15:01:30Z (GMT). No. of bitstreams: 1 2006-Roney Rodrigues Guimaraes.pdf: 1366984 bytes, checksum: a3849d32ef332f39a6a2b06635783317 (MD5) Previous issue date: 2006-03-17 / Among the dipterans of medic-sanitary interest the blowfly families Calliphoridae and Sarcophagidae are distinguished. Its occurrence, distribution and predominance in metropolitans areas are factors of great importance to the Public Health, because the adults are vectors of pathogens for the man and its larvae attack the man in such a way as animal domestic servants. The capture of the calliphorid fauna with traps, bait with viscera cool of chicken, in three distinct ecotypes (agricultural, urban and forest). 31.480 califor?deos dipterans distributed in the following species had been captured: Chrysomya megacephala (54,45%), C. putoria (11,18%), C. albiceps (13,63%), Phaenicia eximia (5,90%), P. cuprina (1,07%), Cochliomyia macellaria would (9,06%), C. hominivorax (0,53%), Hemilucilia segmentaria would (0,80%), H. semidiaphana (1,40%), Mesembrinella bellardiana (1,24%), Eumesembrinella sp. (0,51%), Chloroprocta idioidea (0,09%) and P. sericata (0,13%). The Sinanthropy Index and Seasonal Fluctuation and the Coefficient of Constancy of the species between the autumn of the 2002 and summer of 2004 had been determined. C. albiceps had the highest Sinanthropy Index (IS = + 41,7) conferring to this species was has Preference for Inhabited Areas. Also C. megacephala (IS = +33.01), C. putoria (IS = +25.1), C. hominivorax (IS = +24.1), C. macellaria would (IS = +21,14), P. cuprina (IS = +18,78), P. eximia (-9,67) species with Preference for Inhabited Areas and finally H. segmentaria, H. semidiaphana, M. bellardiana, Eumesembrinella sp., C. idioidea, P. sericata all pertaining to the group, according to data, that possess Complete Absence in Inhabited Areas (IS = -100). The microhimenopteran parasitoids are important tools in the biological control of flies of economic importance that cause damages to the health of human being and other animals. The captures had occurred between january and december of 2004 in urban, rural and forest area. 1.528 larvae of C. hominivorax (Coquerel, 1858) had been used as bait, 505 in the urban one, 556 in agricultural and the 467 in the forested one. The Sinanthropy Index, Coefficient of Constancy, the risk of parasitism (Odds Ratio) between the areas had been calculated, prevalence and parasitic intensity. The percentage was 46,6%. Aphaereta laeviuscula (Spinola, 1851) was captured only in agricultural environment, its indices had been: Sinanthropy I. = +50, C. constancy =25%, prevalence =0,72% and I. parasitoid =44,5; on the other hand Nasonia vitripennis (Walker, 1836) was captured in the areas agricultural and urban and the indices had been: Sinanthropy I. = +98, C. constance =58.3%, Odds Ratio = IC95% = 0,025 < > 0,27, p<0,05, prevalence= 3,2% and I. parasitoid =7,35. The risk of parasitism for N. vitripennis in urban areas is high. It was registered the occurrence of A. laeviuscula as parasite of C. hominivorax in the State of Rio de Janeiro. Blowfly, Parasitoids, Sinanthropy, Seasonal Variation. / Entre os d?pteros de interesse m?dico-sanit?rio destacam-se as moscas varejeiras das fam?lias Calliphoridae e Sarcophagidae. Sua ocorr?ncia, distribui??o e predomin?ncia em ?reas metropolitanas s?o fatores de grande import?ncia na Sa?de P?blica, pois os adultos s?o vetores de pat?genos para o homem e suas larvas atacam tanto o homem como animais dom?sticos. A captura da fauna califor?dica foi realizada atrav?s de armadilhas, iscadas com v?sceras frescas de frango, em tr?s ec?topos distintos (rural, urbano e de floresta). Foram capturados 31.480 d?pteros califor?deos distribu?dos nas seguintes esp?cies: Chrysomya megacephala (54,45%), Chrysomya putoria (11,18%), Chrysomya albiceps (13,63%), Phaenicia eximia (5,90%), Phaenicia cuprina (1,07%), Cochliomyia macellaria (9,06%), Cochliomyia hominivorax (0,53%), Hemilucilia segmentaria (0,80%), Hemilucilia semidiaphana (1,40%), Mesembrinella bellardiana (1,24%), Eumesembrinella sp. (0,51%), Chloroprocta idioidea (0,09%) e Phaenicia sericata (0,13%). Foram determinados os ?ndices de Sinantropia e Flutua??o Sazonal e o Coeficiente de Const?ncia das esp?cies entre o outono de 2002 e o ver?o de 2004. C. albiceps teve o mais alto ?ndice de Sinantropia (IS= + 41,7) conferindo a esta esp?cie, a seguinte classifica??o de acordo com Ferreira (1978 e 1983): esp?cie que tem Prefer?ncia por ?reas Habitadas. Tamb?m C. megacephala (IS= +33,01), C. putoria (IS= +25,1), C. hominivorax (IS= +24,1), C. macellaria (IS= +21,14), P. cuprina (IS= +18,78), P. eximia (-9,67) esp?cie com Prefer?ncia por ?reas Habitadas e finalmente H. segmentaria, H. semidiaphana, M. bellardiana, Eumesembrinella sp. C. idioidea, P. sericata todas pertencentes aos grupos, segundo os dados obtidos, que possuem Completa Aus?ncia em ?reas Habitadas (IS= -100). Os microhimen?pteros parasit?ides s?o ferramentas importantes no controle biol?gico de moscas de import?ncia econ?mica e causadora de danos ? sa?de humana e de outros animais. As capturas ocorreram entre janeiro e dezembro de 2004 em ?rea urbana, rural e florestal. 1.528 larvas de Cochliomyia hominivorax (Coquerel, 1858) foram usadas como iscas, 505 na urbana, 556 na rural e 467 na florestada. Foram calculados os ?ndices de Sinantropia, Coeficiente de Const?ncia, o risco (Odds Ratio) de parasitismo entre as ?reas, preval?ncia e intensidade parasit?ria. O percentual de emers?o foi de 46,6%. Aphaereta laeviuscula (Spinola, 1851), foi capturada apenas em ambiente rural, seus ?ndices foram: I. sinantropia= +50, C. const?ncia=25%, preval?ncia=0,72% e I. parasit?ria=44,5; j? Nasonia vitripennis (Walker, 1836) foi capturada nas ?reas rural e urbana e os ?ndices foram: I. sinantropia= +98, C. const?ncia=58,3%, Odds Ratio= IC95%= 0,025 <?> 0,27, p<0,05, preval?ncia, =3,2% e I. parasit?ria=7,35. O risco de parasitismo por N. vitripennis em ?reas urbanas ? alto. Registra-se a ocorr?ncia de A. laeviuscula como parasito de C. hominivorax no Estado do Rio de Janeiro.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-05-19T13:33:19Z No. of bitstreams: 1 2016 - Jair Figueiredo do Carmo.pdf: 2232723 bytes, checksum: fe83db2be94c1c93b2be3e9af0a35856 (MD5) / Made available in DSpace on 2017-05-19T13:33:19Z (GMT). No. of bitstreams: 1 2016 - Jair Figueiredo do Carmo.pdf: 2232723 bytes, checksum: fe83db2be94c1c93b2be3e9af0a35856 (MD5) Previous issue date: 2016-02-25 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The objective of this research was to study the growth and wood properties of Copaifera langsdorffii trees in an open rain forest, under a forest management system in the state of Mato Grosso, Brazil. Therefore, samples from 20 trees were collected, and the development of the research was divided into two stages. In the first one, a dendrochronological study for the species was carried out and in the second one, a study of the effect of forest management on the anatomical, chemical and physical properties of C. langsdorffii wood. The area where the trees were collected, has as main characteristic the fact that had occurred the first lumbering in 1987 and reaching his second cutting cycle in 2013. During the dendrochronological study, a master chronological series of the tree species and also an analysis of the cambium sensitivity to climatic variations (temperature and precipitation) were done. Furthermore, weather effects of El Ni?o event were found in the growth of those trees. The study of the effect of forest management on the properties of wood, was carried through the anatomical, physics and chemistry characterization of woods that were formed 10 years before and 10 years after the first cutting cycle that had occurred in 1987. It was also analyzed the effect of the distance of the trees studied in relation to the glade (remaining stub) opened in the year of the first lumbering, in 1987. The results indicated that C. langsdorffii has potential to the dendrochronological studies, presenting a significant correlation between the width of the rings within and among those trees. The forest management led to diametrical higher increases than those observed before the first lumbering. It was observed that the higher diametrical growth of trees occurred during periods of the year in which the precipitation rate is higher. The study indicated a significant change in anatomical structure of the wood, by the increased frequency of vessels and decreasing width of rays formed on wood after lumbering in1987. Those results were also observed for the trees distances in relation to the glade. The changes into anatomical structure showed a decrease in the density of the wood formed after 1987. By chemical analysis, 10 chemical elements were found, 4 macro and 6 micronutrients. There was no significant difference in the assimilation of minerals into the wood as a result of forest management. Thus, there was no negative effect on the availability of nutrients to the C langsdorffii. Overall the results showed that forest management was beneficial to the C. langsdorffii, growth because that action led to possible and considerable gains in growth after forest intervention, without incurring significant losses in the anatomical, physical and chemical structure in the wood species. / O objetivo deste trabalho foi estudar o crescimento e propriedades da madeira em ?rvores de Copaifera langsdorffii de uma floresta ombr?fila aberta, sob regime de manejo florestal, no estado de Mato Grosso. Para tanto, foram coletadas amostras de 20 ?rvores, e o desenvolvimento do trabalho foi dividido em duas etapas. Na primeira, foi realizado um estudo dendrocronol?gico para a esp?cie e, na segunda, um estudo do efeito do manejo florestal nas propriedades anat?micas, qu?micas e f?sica da madeira de C. langsdorffii. A ?rea, onde foram coletadas as ?rvores, tem como principal caracter?stica o fato de ter ocorrido a primeira explora??o florestal no ano de 1987 e atingindo seu segundo ciclo de corte no ano de 2013. No estudo dendrocronol?gico, foi constru?da uma s?rie cronol?gica mestre da esp?cie e an?lises da sensibilidade cambial ?s varia??es clim?ticas (temperatura e precipita??o). Al?m disso, verificou-se os efeitos clim?ticos do evento El Ni?o no crescimento das ?rvores. O estudo do efeito do manejo florestal nas propriedades da madeira foi realizado atrav?s da caracteriza??o anat?mica, f?sica e qu?mica dos lenhos formados10 anos antes e 10 anos depois do primeiro ciclo de corte ocorrido em 1987. Foi tamb?m analisado o efeito da dist?ncia das ?rvores estudadas em rela??o ? clareira (toco remanescente) aberta no ano da primeira explora??o de 1987. Os resultados obtidos indicaram que a C. langsdorffii apresenta potencial para estudos dendrocronol?gicos, apresentando uma correla??o significativa da largura dos an?is dentro e entre ?rvores. O manejo florestal propiciou incrementos diametrais superiores aos observados antes da primeira explora??o. Observou-se que os maiores incrementos diametrais das ?rvores ocorreram nos per?odos do ano em que o ?ndice de precipita??o ? maior. O estudo indicou altera??es significativas na estrutura anat?mica da madeira, atrav?s do aumento da frequ?ncia de vasos e redu??o largura dos raios na madeira formada ap?s a explora??o florestal de 1987. Esses resultados tamb?m foram encontrados na an?lise de dist?ncia da ?rvore estudas em rela??o ao toco remanescente. As altera??es na estrutura anat?mica denotaram uma diminui??o da densidade aparente da madeira formada p?s 1987. Atrav?s da an?lise qu?mica foram encontrados 10 elementos qu?micos, sendo 4 macros e 6 micronutrientes. N?o houve diferen?a significativa na assimila??o de minerais na madeira decorrentes do manejo florestal. Assim, n?o houve efeito negativo na disponibilidade de nutrientes para a C. langsdorffii. De modo geral, os resultados encontrados demonstraram que o manejo florestal foi ben?fico para a C. langsdorffii, pois possibilitou ganhos consider?veis de incremento ap?s a interven??o florestal, sem acarretar preju?zos relevantes na estrutura anat?mica, f?sica e qu?mica no lenho da esp?cie.

Submitted by PPG Letras (letraspg@pucrs.br) on 2018-08-17T13:35:49Z No. of bitstreams: 1 TESE_ANA PAULA DA SILVA.pdf: 2482788 bytes, checksum: 360c31c647f942a1bfdb12fc302ad3d5 (MD5) / Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-08-20T13:26:12Z (GMT) No. of bitstreams: 1 TESE_ANA PAULA DA SILVA.pdf: 2482788 bytes, checksum: 360c31c647f942a1bfdb12fc302ad3d5 (MD5) / Made available in DSpace on 2018-08-20T13:45:24Z (GMT). No. of bitstreams: 1 TESE_ANA PAULA DA SILVA.pdf: 2482788 bytes, checksum: 360c31c647f942a1bfdb12fc302ad3d5 (MD5) Previous issue date: 2018-03-27 / Conselho Nacional de Pesquisa e Desenvolvimento Cient?fico e Tecnol?gico - CNPq / This thesis deals with the production and perception of voiceless sibilant fricatives [s] and [?] in syllable onset and coda in the varieties of Brazilian Portuguese spoken in Porto Alegre/RS and Florian?polis/SC under the perspective of Sociophonetics (FOULKES, DOCHERTY, 2006; FOULKES; SCOBBIE; WATT, 2010; THOMAS, 2011). This research aims: i) to provide the acoustic description of the sibilant fricatives produced in Porto Alegre/RS and Florian?polis/SC in onset and coda; ii) to investigate the effects of the linguistic bias (contrastive and non-contrastive function of sibilant fricatives) on the phonetic perception of sibilant fricatives in onset and coda; and iii) to investigate the effects of the cognitive bias on the perception of phonetic variation of sibilant fricatives in coda. The corpus of this study consists of two samples of production data, one referring to data from 16 informants from Florian?polis and another sample referring to data from 24 informants from Porto Alegre. Regarding the perception data, the sample collected in Florian?polis consists of 30 participants, while the sample collected in Porto Alegre consists of 10 participants. The acoustic analysis of the sibilant fricatives partially confirmed the predicted coarticulatory effects of the surrounding vowel contexts and the effects of syllable stress on the spectral characterization of the sibilant fricatives, except for the vowels [u] and [o] preceding the fricative sibilant in coda and the unstressed pretonic syllable in the case of the alveolar fricative in onset. It seems that the variability of the phonetic production correlates with the gender of the speakers in the two cases indicated. The gender of the speakers also seems to interfere in the production of the alveolar fricative in onset by more educated people from Porto Alegre, with men tending to increase the Centroid, while women tend to reduce it. The temporal parameter examined showed a constant effect, namely the increase of frequencies as a function of the duration of the sibilants in onset and coda. The increase in frequencies due to the monitored speech style has also been confirmed and it is suggested to be an articulatory behavior associated specifically to women. Concerning the analysis of perception data, contrast and noncontrast relations of sibilant fricatives do affect the perception of men and women from Florian?polis and men from Porto Alegre, but not in the perception of women from Porto Alegre. Regarding the perception of phonetic variation, the results suggest that automatic associations between the stereotype of native/local resident and the palatoalveolar fricative in Florian?polis and the association between the stereotype of portoalegrense and the alveolar fricative in Porto Alegre are activated during perception. Moreover, the implicit association tends to become stronger as participants overtly report a greater difference between alveolar and palato-alveolar stimuli. However, the fact that some participants associate this difference to linguistic aspects other than the sibilant fricative in coda shows that the perception of socially structured phonetic variation occurs unconsciously. It is therefore concluded that the production of voiceless sibilant fricatives in Brazilian Portuguese is phonetically gradient and varies according to the gender of the speakers and that the perception of these sounds is mediated by linguistic and cognitive biases. / Esta tese trata da produ??o e percep??o das fricativas sibilantes n?o-vozeadas [s] e [?] em ataque e coda sil?bica nas variedades de portugu?s brasileiro faladas em Porto Alegre/RS e Florian?polis/SC sob a perspectiva da Sociofon?tica (FOULKES; DOCHERTY, 2006; FOULKES; SCOBBIE; WATT, 2010; THOMAS, 2011). A pesquisa teve como objetivos: i) realizar a descri??o ac?stica das fricativas sibilantes produzidas em Porto Alegre/RS e Florian?polis/SC em ataque e coda sil?bica; ii) investigar os efeitos do vi?s lingu?stico (fun??o contrastiva e n?o-contrastiva das fricativas sibilantes) sobre a percep??o fon?tica das fricativas sibilantes em ataque e coda sil?bica; e iii) investigar os efeitos do vi?s cognitivo sobre a percep??o da varia??o fon?tica das fricativas sibilantes em coda sil?bica. O corpus deste estudo contou com duas amostras de dados de produ??o, a saber, uma amostra referente a dados de 16 informantes florianopolitanos e outra amostra referente a dados de 24 informantes porto-alegrenses. Quanto aos dados de percep??o, a amostra florianopolitana ? constitu?da por 30 participantes, ao passo que a amostra portoalegrense conta com 10 participantes. A an?lise ac?stica das fricativas sibilantes confirmou parcialmente os efeitos coarticulat?rios dos contextos voc?licos circundantes e da tonicidade sobre a caracteriza??o espectral das fricativas sibilantes, exceto pelas vogais [u] e [o] em contexto precedente ? sibilante em coda e pela tonicidade pret?nica no caso da fricativa alveolar em ataque. Ao que parece, a produ??o fon?tica vari?vel se correlaciona com o g?nero dos falantes nos dois casos indicados. O g?nero dos falantes tamb?m parece interferir na produ??o da fricativa alveolar em ataque pelos porto-alegrenses que possuem n?vel Superior de escolaridade, sendo que os homens tendem a aumentar o Centroide, enquanto as mulheres tendem a reduzi-lo. O par?metro temporal examinado apresentou um efeito constante, a saber, o aumento das frequ?ncias em fun??o da dura??o das sibilantes em ataque e coda. O aumento das frequ?ncias em fun??o do estilo de fala monitorado tamb?m se confirmou e sugere se tratar de um comportamento articulat?rio associado especificamente ?s mulheres. No que diz respeito ? an?lise dos dados de percep??o, as rela??es de contraste e de n?o-contraste das fricativas sibilantes de fato interferem na percep??o dos homens e mulheres florianopolitanos e dos homens portoalegrenses, mas n?o na percep??o das mulheres porto-alegrenses. Em rela??o ? percep??o da varia??o fon?tica, os resultados sugerem que associa??es autom?ticas entre o estere?tipo de morador nativo e a fricativa palato-alveolar em FLN e entre o estere?tipo de porto-alegrense e a fricativa alveolar em POA s?o ativadas durante a percep??o. Mais do que isso, a associa??o impl?cita tende a se tornar mais forte conforme os participantes reportam explicitamente uma diferen?a maior entre os est?mulos alveolar e palato-alveolar. Todavia, o fato de que alguns participantes relacionam essa diferen?a a outros aspectos lingu?sticos que n?o ? fricativa sibilante em coda evidencia que a percep??o da varia??o fon?tica socialmente estruturada ocorre de modo inconsciente. Conclui-se, portanto, que a produ??o das fricativas sibilantes n?o-vozeadas do portugu?s brasileiro ? foneticamente gradiente e varia em fun??o do g?nero dos falantes e que a percep??o desses sons ? mediada por vieses lingu?sticos e cognitivos.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-12-12T18:53:10Z No. of bitstreams: 1 MariaEmanuellaFirminoBarbosa_TESE.pdf: 17456528 bytes, checksum: 1ca17d60d4523399fe8138c2a7d13c40 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-12-13T21:30:21Z (GMT) No. of bitstreams: 1 MariaEmanuellaFirminoBarbosa_TESE.pdf: 17456528 bytes, checksum: 1ca17d60d4523399fe8138c2a7d13c40 (MD5) / Made available in DSpace on 2017-12-13T21:30:21Z (GMT). No. of bitstreams: 1 MariaEmanuellaFirminoBarbosa_TESE.pdf: 17456528 bytes, checksum: 1ca17d60d4523399fe8138c2a7d13c40 (MD5) Previous issue date: 2017-08-28 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Uma pesquisa geomorfol?gica detalhada usando Light Detection and Ranging (LIDAR) foi realizada ao longo da parte ocidental do rio Assu, estado do Rio Grande do Norte, Brasil. O estudo foi complementado por uma s?rie de sondagens com trado, indicadores de foramin?feros bent?nicos de sedimentos, bem como data??o por Optically Stimulated Luminescence (OSL) e por Radiocarbono (C14). Esses dados permitiram reconstruir a evolu??o desta ?rea desde o Pleistoceno tardio at? o presente. O ba?a rasa, que agora est? completamente preenchido formado dentro dos limites da morfologia antecedente desenvolvida desde a ?ltima interglacial. Os principais fatores for?adores respons?veis pelo reposicionamento do litoral, que correu em um ?ngulo de ca. 35% para a costa atual no Pre Holoceno e M?dio Holoceno foram: (1) atividade tect?nica ao longo da linha de falha de Afonso Bezerra, define a estrutura de horst-graben da Serra do Mel, (2) inunda??o r?pida da ba?a do paleovale raso durante a ?ltimo pulso da transgress?o do Holoceno ca. 7500 cal BP e (3) prograda??o r?pida do estu?rio do rio Assu atrav?s da acumula??o de sedimentos costeiros e sedimentos fluviais. / A detailed geomorphological survey using Light Detection and Ranging was carried out along the western part of Assu River, NE, Brazil. The study was complemented by a series of shallow boreholes, sediment benthic foraminifera indicators, as well as radiocarbon and optically stimulated luminescence dating and permitted to reconstruct the evolution of this area from the late Pleistocene until the present. The shallow embayment, which is now completely infilled formed within the limits of antecedent morphology developed since the last interglacial. The main forcing factors responsible for repositioning of the shoreline, which ran at an angle of ca. 35% to the present coast in Early/mid Holocene were: (1) tectonic activity along Afonso Bezerra a strike-slip fault line which defines the horst-graben structure of Mel dome, (2) fast inundation of the shallow paleovalley embayment during the last pulse of Holocene transgression ca. 7500 cal BP, and (3) fast progradation of the Assu estuary through accretion of coastal drift and fluvial sediments.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-12-12T19:37:16Z No. of bitstreams: 1 LeticiaBarbosaQuesado_TESE.pdf: 2770136 bytes, checksum: 39d9025b9fc8dcd97a37920776922f35 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-12-14T19:34:03Z (GMT) No. of bitstreams: 1 LeticiaBarbosaQuesado_TESE.pdf: 2770136 bytes, checksum: 39d9025b9fc8dcd97a37920776922f35 (MD5) / Made available in DSpace on 2017-12-14T19:34:03Z (GMT). No. of bitstreams: 1 LeticiaBarbosaQuesado_TESE.pdf: 2770136 bytes, checksum: 39d9025b9fc8dcd97a37920776922f35 (MD5) Previous issue date: 2017-06-26 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Os padr?es na biodiversidade s?o o resultado de m?ltiplos processos (locais e regionais) interativos em diferentes propor??es em diferentes extens?es das escalas espaciais. Quanto menor o organismo, maior ? seu potencial de dispers?o, portanto acredita-se que suas comunidades sejam predominantemente estruturadas pelo ambiente atrav?s da ordena??o das esp?cies. O uso da abordagem funcional tem se mostrado cada vez mais eficiente para o entendimento dos padr?es de biodiversidade, pela intr?nseca rela??o dos tra?os com o ambiente que os seleciona. Desta forma, espera-se que com o aumento das extens?es espaciais devido ao aumento da heterogeneidade ambiental maior ser? o n?mero de tra?os funcionais selecionados pelos diferentes filtros ambientais, levando a uma rela??o positiva da diversidade funcional-taxon?mica. No entanto, a varia??o dos tra?os pode ser devido a ordena??o de esp?cies ou varia??o de intraespec?fica dependendo do gradiente ambiental analisado. O objetivo geral foi avaliar a influ?ncia da escala espacial na diversidade taxon?mica e funcional do fitopl?ncton de lagos e reservat?rios distribu?dos da regi?o costeira (?mida) para o interior (semi?rido) do Rio Grande do Norte. Desta forma, os objetivos espec?ficos foram: (1) verificar quais fatores (locais ou regionais) determinam a ?-diversidade taxon?mica e funcional em duas extens?es espaciais (bacia hidrogr?fica e paisagem); (2) como as rela??es entre as m?tricas funcionais e taxon?micas (riqueza, equitabilidade, diversidade e redund?ncia funcional) variam de acordo com o gr?o da escala espacial; e (3) como os gradientes ambientais explicam a varia??o do tamanho dos organismos fitoplanct?nicos na comunidade e seus grupos funcionais. As amostras foram coletadas em 98 lagos distribu?dos em 14 bacias hidrogr?ficas, entre os meses de setembro e outubro de 2012. As m?tricas funcionais foram baseadas em tra?os mistos, como superf?cie, tamanho, presen?a de mucilagem e composi??o de pigmentos (verde, azul, marrom e misto), e tipo de formas de vida (colonial, filamentosa ou unicelular). Nossos resultados mostram que a comunidade fitoplanct?nica foi explicada principalmente pela ordena??o de esp?cies em ambas as extens?es espaciais, com import?ncia decrescente com a escala. No entanto, a ?-diversidade funcional foi melhor predita pela ordena??o de esp?cies do que a taxon?mica. Al?m disso, as abordagens foram dependentes da escala espacial, enquanto a funcional foi significativa para as bacias hidrogr?ficas, a taxon?mica foi fracamente relacionada a paisagem. Ao observarmos as rela??es entre as m?tricas funcionais e taxon?micas, encontramos uma rela??o linear positiva com quase todas as m?tricas medidas. Apenas a riqueza foi dependente da escala espacial, mudando de uma rela??o visual assint?tica para uma linear. Consequentemente, a redund?ncia funcional ponderada pela abund?ncia diminuiu em ambas as escalas espaciais com mudan?as nas m?tricas respons?veis por tal. Ao n?vel do lago, a redund?ncia funcional foi correlacionada com o aumento da diversidade funcional, ao n?vel da bacia hidrogr?fica com riqueza, taxon?mica e funcional. De forma geral, a comunidade fitoplanct?nica aumentou seu tamanho m?dio ao longo do gradiente de biomassa de Cyclopoida. A mudan?a de esp?cies foi o padr?o dominante na varia??o do tamanho e repetiu-se nos grupos funcionais, com exce??o das algas unicelulares n?o t?xicas de parede celular r?gida e as filamentosas t?xicas, nas quais a varia??o intraespec?fica foi mais importante ao longo do gradiente de biomassa de Calanoida e de eutrofiza??o, respectivamente. Este estudo contribui para o modelo de ordena??o de esp?cies do mecanismo de metacomunidade para as comunidades fitoplanct?nicas, refor?ado pela abordagem funcional baseada em tra?os. A mudan?a de esp?cies apresentou uma forte influ?ncia na resposta de tamanho do fitopl?ncton a gradientes amplos. Finalmente, este estudo destaca o papel substancial da complementariedade funcional na estrutura??o da comunidade fitoplanct?nica e a import?ncia de incluir escalas espaciais distintas em estudos de metacomunidade. / Patterns in biodiversity are the result of multiple interacting processes at both local and regional spatial scales. Microorganisms, considered highly dispersed, have their communities expected to be predominantly structured by the local environment through species sorting. The functional approach has increasingly been used to understand patterns of biodiversity and its consequences to the ecosystem. Increasing scientific effort has been devoted to testing patterns and mechanisms regulating functional-taxonomic diversity relationship. The spatial scale has the potential to mediate this relationship because both the number of species and environmental heterogeneity are expected to increase with spatial scale. Consequently, a great number of functional traits may be selected by environmental filtering at larger spatial scales leading to a positive functional-taxonomic diversity relationship. Nevertheless, trait variation over an environmental gradient can be due to either species turnover or intraspecific trait variation. We aimed to evaluate how the spatial scale influences the taxonomic and functional phytoplankton diversity of freshwater environments distributed along an arid gradient from the (humid region) coast to the countryside (semiarid region) of Rio Grande do Norte. Likewise, we also intended to verify (1) which factors (local or regional) determines taxonomic and functional ?-diversity at two spatial extensions (watershed and landscape) (Chapter 1); (2) how the relationships between functional and taxonomic metrics (richness, evenness, diversity, and functional redundancy) vary according to spatial scale grain (lake or watershed) (Chapter 2); and (3) how environmental gradients explain the size variation of phytoplankton community and its functional groups (Chapter 3). We collected samples in the subsurface of the limnetic region of 98 lakes distributed along 14 watersheds, between September and October 2012. The functional metrics were based on mixed traits, as surface, size, presence of mucilage and pigment composition (green, blue, brown and mixed) and type of life forms (colonial, filamentous or unicellular). Our results show that phytoplankton community was mainly explained by species sorting at both spatial extensions, with decreasing importance with the scale. However, functional ?-diversity was better predicted by species sorting than taxonomic one. In addition, the approaches were spatial scale dependent, while functional approach was significant at the watershed level, taxonomic weakly significant at the landscape level. When observing the functional-taxonomic metrics relationship, we found a positive linear relationship with almost all metrics measured. Only richness was spatial scale dependent, changing from a visually asymptotic relationship to a linear one with increasing spatial scale grain. Consequently, functional redundancy decreased at both spatial scale grain with changes in the metrics responsible for it. At the lake level, functional redundancy was correlated with an increase in functional diversity, while at the watershed level with richness, taxonomic and functional ones. Overall, the phytoplankton community increased in its average size along with Cyclopoida biomass. Species turnover was predominant as the pattern of size variation, and repeated itself within each of the functional groups, except for the non-toxic unicellular algae with hard cell walls and the toxic filamentous algae for which intraspecific variation was more important along Calanoida biomass and eutrophication gradient, respectively. This study contributes to the species-sorting model of metacommunity mechanism for phytoplankton communities reinforced by the functional trait-based approach. Species turnover had a strong influence on determining phytoplankton size responses to broad gradients. Finally, this study highlights a substantial role of functional complementary for structuring phytoplankton communities and the importance of including distinct spatial scales in metacommunities studies.

Made available in DSpace on 2015-02-24T18:20:51Z (GMT). No. of bitstreams: 1 AffonsoHSRN.pdf: 595224 bytes, checksum: f7e016b071fe94158f32fba9c2fa8d4b (MD5) Previous issue date: 2009-08-10 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The present dissertation aims to an approach of the teaching of Portuguese language on television, trying to find how possible is the contribution of this communication media in the sense to give a higher classroom dynamism and to excite the students for that subject. The TV show Afinando a L?ngua (roughly, putting the language in tune ), a Canal Futura feature, have as one of these main purpose be shown on the classrooms as a tool that could enlarge the possibilities of a subject often took as particularly difficult. Blocked by the traditional grammatical teaching, the Portuguese lessons have been for years pictured as hermetic and far from the Brazilian speakers reality. So, people create myths around the language that earns adjectives as complicate and inaccessible and that Brazilians can t speak the Portuguese really good, because it only happens in Portugal, the original country of the language. These myths start exactly because the teaching orientation take their basis only on the standard language, in fact just one of the language variations by the way, anywhere in the world dictated by ancestral rules, once produced in Portugal. The regular school don t accept the Portuguese variation as a natural fact for a huge country as Brazil, with almost 190 million people, regarding it as a wrong way of talking. The repression that follows the students from the early school days make them repel the language supposedly learned at school. In fact, they normally face it as something unfamiliar, different from the language that they have use to learn at home, from the family and neighbors Instead of giving new possibilities for the language learning, the television, a powerful audiovisual device, only reinforces the idea that everyone, in any life situation, should talk the standard Portuguese, turning its back to the learning acquired much earlier that any person reach the school. This conservative attitude brings almost no changes, between the shows that try to teach the idiom and the traditional Portuguese lessons, wasting valuable tools that could lead to the possibility to open the classroom to the outside world, and to the wider knowledge of the differences from each Brazilian region culture, a positive attitude that could much enlarge the cultural and linguistic students universe / Esta disserta??o trata do ensino da L?ngua Portuguesa na televis?o sobe o vi?s de uma poss?vel contribui??o deste meio de comunica??o no sentido de conferir um maior dinamismo e interesse por parte dos estudantes desta disciplina. O programa Afinando a L?ngua, exibido no Canal Futura, tem como um dos seus objetivos ser exibido na sala de aula como ferramenta que ampliasse o universo das aulas para uma disciplina que ? considerada de dif?cil apreens?o. Confinadas ao ensino gramaticista, as aulas de portugu?s t?m sido, h? muito tempo, encaradas como herm?ticas e pouco condizentes ? realidade do idioma praticado pelos brasileiros. Acaba-se, ent?o, por criar-se mitos que levam os alunos a crer que o idioma portugu?s ? um dos mais complicados e inacess?veis e que, no Brasil, n?o se fala bem o idioma fala-se bem portugu?s, continuam a pregar os mitos, apenas em Portugal. A distor??o come?a exatamente pelo tipo de ensino que se baseia numa norma-padr?o, apenas uma das varia??es lingu?sticas de um idioma em qualquer lugar do mundo, ditada por regras ancestrais, escritas no pa?s de origem do nosso idioma. A escola n?o aceita as diversas outras varia??es lingu?sticas do portugu?s praticado em nosso extenso Pa?s, com quase 190 milh?es de habitantes, taxando-as de formas erradas de falar. A repress?o que persegue o aluno desde os primeiros anos de sua vida escolar o faz se afastar do idioma e a consider?-lo como algo estranho ? sua cultura, aquela que aprendeu em casa, com a fam?lia e os vizinhos. Ao inv?s de oferecer novas possibilidades para o aprendizado do idioma, a televis?o, com seu poder audiovisual, apenas refor?a a id?ia de que todos, em qualquer situa??o de vida, deveriam falar o portugu?s-padr?o, dando as costas para aquilo que aprenderam bem antes de entrar na escola. Com esta postura conservadora, pouco acrescenta ?s tradicionais aulas de portugu?s, desperdi?ando ferramentas valiosas como o poder de trazer o mundo exterior, as diferen?as de cada regi?o do Brasil, para a sala de aula numa atitude que poderia ampliar, e muito, o universo cultural e ling??stico dos alunos

Made available in DSpace on 2014-12-17T15:03:18Z (GMT). No. of bitstreams: 1 LucianoRCM.pdf: 1122130 bytes, checksum: 38b3caf9fc80157bb441aa6fd22b04ce (MD5) Previous issue date: 2007-08-24 / One of the most evident and actual concern, not only in the scientific means, but also of the public knowledge in general, is the lack problem of the potable water, that come increasing more each time, motivated mainly for the po llution of the sources, the bad use of the water and the increase of the population. In such a way, the necessity of looking for new water sources and the development of techniques to use sources minus explored is becoming even more important and urgent. T he rainwater comes being used since a long time like a supplying source, but, due the few knowledge of its characteristics, the generated preconception and the discrimination around its consumption and to the bad use of the technique of collection and stor age, it comes being little used, wasting consequently a significant parcel of this source. Trying to develop the knowing of some characteristics of the rainwater, the present work looks for to define the curve of variation of the quality of the rainwater i n three points with distinct characteristics of the city of Natal -RN, in the course of the precipitation, in some situations of time and space. For describe the curve of variation of the water s quality, some variables must be analyzed, and to be identifie d when they modify themselves in the endurance of rain, showing in which moment the purification of the water is more or less quickly. The pH, the Turbidity and the Electric Conductivity can be related with a big part of the physicist -chemistries variables found in the water and, like its analyses don't spend any material, they have easy access and measurement. The present work analyzes the curves of decline of these three variables, in three points with distinct characteristics in the city of Natal -RN, being these points: one next to the sea, another one in region with great buildings concentration and the last point in a less polluted area. For the studied region, it was during the five first millimeters of rain that occurs the biggest reduction of the exi sting impurities in the atmosphere, mainly between the first and the second millimeter, and after the five first millimeters the values of the variables stabilize. With exception of the University Campus, where initially the rainwater already has very good quality, the values of Turbidity and Electric Conductivity suffer a brusque reduction after the first millimeter of rain / Uma das preocupa??es mais evidentes e atuais, n?o s? no meio cient?fico, mas tamb?m de conhecimento do p?blico em geral, ? o problema da falta de ?gua pot?vel, que v?m aumentando cada vez mais, devido principalmente ? polui??o dos mananciais, ao mau uso da ?gua e ao aumento da popula??o. Desta forma, a necessidade de se procurar novas fontes d e ?gua e de aperfei?oar as t?cnicas de utiliza??o de fontes pouco exploradas se torna cada vez mais importante e urgente. A ?gua de chuva j? ? utilizada h? muito tempo como fonte de abastecimento, por?m, devido ao pouco conhecimento de suas caracter?sticas , ao preconceito e descrimina??o gerados em torno do seu consumo e ao mau uso da t?cnica de coleta e armazenamento, ela vem sendo subutilizada, desperdi?ando -se assim uma parcela significativa deste manancial. Buscando desenvolver o conhecimento de algumas caracter?sticas da ?gua pluvial, o presente trabalho procura definir a curva de varia??o da qualidade da ?gua da chuva em tr?s pontos com caracter?sticas distintas da cidade de Natal -RN, ao longo da precipita??o, em v?rias situa??es de tempo e de espa?o. Para que se possa descrever a curva de varia??o da qualidade da ?gua, algumas vari?veis devem ser analisadas, de forma a identificar como elas se modificam no decorrer da chuva, mostrando em qual momento a purifica??o da ?gua ? mais e menos acelerada. O pH, a Turbidez e a Condutividade El?trica podem ser relacionados com grande parte das vari?veis f?sico -qu?micas encontradas na ?gua e, como suas an?lises n?o s?o consumpt?veis, tem f?cil acesso e medi??o. O presente trabalho analisa as curvas de decaimento d estas tr?s vari?veis, em tr?s pontos com caracter?sticas distintas na cidade de Natal RN, sendo estes pontos: um pr?ximo ao mar, outro em regi?o com grande concentra??o imobili?ria e o ?ltimo ponto em ?rea menos polu?da. Para a regi?o estudada, foi durante os primeiros 5,0 mil?metros de chuva que ocorreu a grande redu??o percentual das impurezas existentes na atmosfera, principalmente entre o 1? e o 2? mil?metro, e ap?s os primeiros 5,0 mil?metros os valores das vari?veis se estabilizam. Com exce??o do Campus Universit?rio, onde inicialmente a ?gua de chuva j? apresenta qualidade muito boa, os valores de Turbidez e Condutividade El?trica sofrem redu??o brusca ap?s o 1? mil?metro de chuva

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-03-21T18:57:51Z No. of bitstreams: 1 SephoraLouyseSilvaDeAquino_DISSERT.pdf: 1193820 bytes, checksum: 6fae5e7a49aca61ea1d816758627555e (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-03-28T00:43:51Z (GMT) No. of bitstreams: 1 SephoraLouyseSilvaDeAquino_DISSERT.pdf: 1193820 bytes, checksum: 6fae5e7a49aca61ea1d816758627555e (MD5) / Made available in DSpace on 2017-03-28T00:43:51Z (GMT). No. of bitstreams: 1 SephoraLouyseSilvaDeAquino_DISSERT.pdf: 1193820 bytes, checksum: 6fae5e7a49aca61ea1d816758627555e (MD5) Previous issue date: 2016-11-22 / O risco de s?ndrome metab?lica pode ser influenciado pelo status inadequado de vitamina D, sendo a exposi??o ? luz solar a principal fonte externa desta vitamina. O objetivo do estudo foi avaliar a influ?ncia dos fatores ambientais, biol?gicos e nutricionais em fun??o das esta??es do ano no status de 25OHD em pacientes com s?ndrome metab?lica. Estudo transversal desenvolvido com 180 indiv?duos adultos e idosos com idade entre 18-80 anos, ambos os sexos, com diagn?stico de s?ndrome metab?lica, segundo os crit?rios do National Cholesterol Education Program Adult Treatment Panel III (NCEP-ATP III). Foi considerada como vari?vel dependente a concentra??o de 25OHD; e como vari?veis independentes: idade, sexo, cor da pele, uso de filtro solar, fototipo de pele, escore de exposi??o solar, ?ndice de radia??o ultravioleta (IRUV), localiza??o geogr?fica, esta??es do ano, ?ndice de massa corporal (IMC), rela??o cintura-quadril (RCQ), circunfer?ncia da cintura (CC), paratorm?nio (PTH), c?lcio total s?rico, al?m do c?lcio e vitamina D da dieta. Potenciais preditores para a magnitude do status de 25OHD foram investigados por meio de 16 modelos de regress?o linear univariado, e sete modelos de regress?o m?ltipla. Foram estabelecidas medidas de associa??o e correla??o. O n?vel de signific?ncia adotado foi 5%. O status de 25OHD foi significativamente diferente entre inverno e ver?o (P=0,017). A m?dia de 25OHD indicou insufici?ncia no inverno (25,89ng/mL+7,61) e sufici?ncia no ver?o (31,81ng/mL+10,22), com aumento de 5,59ng/mL no ver?o. No modelo de regress?o linear simples, a concentra??o de 25OHD associou-se significativamente com o ver?o (P=0,003), de modo que a vari?vel esta??o do ano explicou 4,2% da variabilidade do status de 25OHD. O escore de exposi??o solar foi significativamente associado com a concentra??o de 25OHD (P=0,008), explicando 3,4% da variabilidade. No modelo de regress?o m?ltipla, sexo (P=0,027), RCQ (P=0,027), escore de exposi??o solar (P=0,006) e inverno vs. ver?o (P=0,004), explicaram 10,4% da varia??o da concentra??o de 25OHD. Os homens tiveram a concentra??o de 25OHD 3,71ng/mL maior do que as mulheres. O aumento de 1,0 unidade no escore de exposi??o solar, resultou no acr?scimo de aproximadamente 0,16ng/mL na concentra??o de 25OHD. A RCQ teve associa??o inversa com a concentra??o de 25OHD. A esta??o do ano ver?o e a exposi??o solar influenciaram no status de 25OHD dos indiv?duos com s?ndrome metab?lica residentes de uma regi?o do Brasil com elevados ?ndices de radia??o ultravioleta. / The risk of metabolic syndrome can be influenced by inadequate vitamin D levels, and exposure to sunlight is the main external source of vitamin D. This study assessed the influence of environmental, biological and nutritional factors as a function of seasons on the 25OHD status among individuals with metabolic syndrome. A cross-sectional study was developed with 180 adult and elderly individuals of both genders, between 18-80 years of age, with metabolic syndrome according to the National Cholesterol Education Program Adult Treatment Panel III (NCEP-ATP III) criteria. The 25OHD concentration was considered dependent variable; the independent variables were age, gender, skin color, use of sunscreen, skin type, sun exposure score, ultraviolet index (UVI), geographic location, season, body mass index (BMI), waist-hip ratio (WHR), waist circumference (WC), parathyroid hormone (PTH) level, total serum calcium level, and diet levels of calcium and vitamin D. The potential predictors for the 25OHD levels were investigated using 16 univariate linear regression models and seven multiple regression models. Measures of association and correlation were established and statistical significance was assumed for P < 0.05 (5%). The 25OHD status differed significantly between winter and summer (P = 0.017). The average 25OHD level was insufficient during the winter (25.89 ? 7.61 ng/mL) and sufficient during the summer (31.81 ? 10.22 ng/mL), with an increase of 5.59 ng/mL in the summer. In the simple linear regression model, 25OHD concentration was significantly associated with the summer season (P = 0.003); the season variable explained 4.2% of the variability in 25OHD concentration. The sun exposure score was significantly associated with 25OHD concentration (P = 0.008), explaining 3.4% of the variability. In the multiple regression model, gender (P = 0.27), WHR (P = 0.27), sun exposure score (P = 0.006), and winter vs. summer (P = 0.004) explained 10.4% of the variation in 25OHD concentration. Men had a 25OHD concentration 3.71 ng/mL higher than that of women. An increase of 1.0 unit in the sun exposure score resulted in an increase of approximately 0.16 ng/mL on 25OHD concentration. WHR showed an inverse association with the 25OHD concentration. The summer season and sun exposure influenced the 25OHD status in individuals with metabolic syndrome living in a region of Brazil with a high ultraviolet radiation index.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2016-04-12T23:52:05Z No. of bitstreams: 1 EXPRESS?O DO FUTURO VERBAL NA ESCRITA ESCOLAR DE IRAR? - BA.pdf: 862877 bytes, checksum: 69a7a8273f3d6a0cbc5ba146504ce42d (MD5) / Made available in DSpace on 2016-04-12T23:52:05Z (GMT). No. of bitstreams: 1 EXPRESS?O DO FUTURO VERBAL NA ESCRITA ESCOLAR DE IRAR? - BA.pdf: 862877 bytes, checksum: 69a7a8273f3d6a0cbc5ba146504ce42d (MD5) Previous issue date: 2015-03-16 / Funda??o de Amparo ? Pesquisa do Estado da Bahia - FAPEB / The verbal future tense in Portuguese is a variable phenomenon currently expressed by the verb forms: the simple future tense, the periphrasis with go + infinitive, the indicative present tense, and the gerundive future form. Among them, the simple future tense is the standard way, and the periphrastic future form is considered by grammarians like a colloquial form of the language. Several studies (GIBBON, 2000; OLIVEIRA, 2006; BRAGAN?A, 2008; SILVA, 2010; TESCH 2011; SANTOS, 2012) have attested to this variable phenomenon throughout history of the Portuguese language and point to the implementation of the periphrastic way of to go + infinitive as a possible replacement of the simple future tense. According to these studies, this change is almost complete in speech and is already invading writing. With this information about the uses of the verbal future tense in Portuguese, in this study, we analyzed data of high school students from public and private schools in the city of Irar?-Ba, within a variational and functionalist perspective, with a synchronic study, in order to observe the presence of the periphrastic future form in school texts, considering the process of grammaticalization. The results of the verbal future tense in school writing of the first, second and third classes of high school, with the control of various groups of linguistic and sociolinguistic, factors, showed that the variant that more customarily occurs in spoken language (the periphrastic future form) is also present in written language. The results show that the phenomenon under study is motivated by factors such as type of school, verbal paradigm, residential area, syntactic status of verb, verb conjugation, thematic role of the subject, semantic nature of the verb, type of subject and type of verb. It was evident through the review that there is an ongoing change process towards the simple future form, more used in texts written by speakers said "cults", be replaced by the periphrastic future form, commonly founded in speech, suffering less normative pressures. / O futuro verbal na l?ngua portuguesa ? um fen?meno vari?vel que, atualmente, ? expresso pelas formas verbais: futuro simples, per?frase com ir + infinitivo, presente do indicativo e futuro gerundivo. Dentre elas, o futuro simples ? a forma padr?o, enquanto o futuro perifr?stico ? considerado pelos gram?ticos uma forma coloquial da l?ngua. V?rios estudos (GIBBON, 2000; OLIVEIRA, 2006; BRAGAN?A, 2008; SILVA, 2010; TESCH 2011; SANTOS, 2012) t?m atestado esse fen?meno vari?vel ao longo da hist?ria da l?ngua portuguesa e apontam para a implementa??o da forma perifr?stica com ir + infinitivo como poss?vel substituta da forma de futuro simples. Segundo tais estudos, esta mudan?a est? quase conclu?da na fala e j? est? invadindo a escrita. De posse dessas informa??es acerca dos usos do futuro verbal na l?ngua portuguesa, neste estudo, faz-se uma an?lise de reda??es de alunos de Ensino M?dio de escolas p?blicas e particulares na cidade de Irar?-Ba, dentro de uma perspectiva variacionista e funcionalista, a partir de um estudo sincr?nico, com o intuito de observar a presen?a do futuro perifr?stico em reda??es escolares, considerando o seu processo da gramaticaliza??o. Os resultados encontrados sobre o futuro verbal nas reda??es escolares das turmas de primeiro, segundo e terceiro anos do Ensino M?dio, a partir do controle de v?rios grupos de fatores lingu?sticos e sociolingu?sticos, demonstraram que a variante que ocorre mais costumeiramente na l?ngua falada (futuro perifr?stico) tamb?m se faz presente na l?ngua escrita. Os resultados revelam que o fen?meno em estudo ? motivado por fatores como tipo de escola, paradigma verbal, zona residencial, estatuto sint?tico do verbo, conjuga??o verbal, papel tem?tico do sujeito, natureza sem?ntica do verbo, tipo de sujeito e tipo de verbo. Ficou evidente, atrav?s da an?lise realizada, que h? um processo de mudan?a em curso no sentido de a forma de futuro simples, mais usada em textos escritos por falantes ditos ?cultos?, ser substitu?da pela forma perifr?stica, comumente encontrada na fala, que sofre menos press?es normativas.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2016-09-05T21:15:00Z No. of bitstreams: 1 DISSERTA??O - FERNANDA DOS SANTOS ALMEIDA.pdf: 1466031 bytes, checksum: 8af122db6bcaef3418048d114efd8301 (MD5) / Made available in DSpace on 2016-09-05T21:15:00Z (GMT). No. of bitstreams: 1 DISSERTA??O - FERNANDA DOS SANTOS ALMEIDA.pdf: 1466031 bytes, checksum: 8af122db6bcaef3418048d114efd8301 (MD5) Previous issue date: 2015-03-16 / Funda??o de Amparo ? Pesquisa do Estado da Bahia - FAPEB / We analyze the realization of the future tense in the political discourse of the three largest cities of Bahia, Salvador, Feira de Santana, and Vit?ria da Conquista, based upon the Variacionist Sociolinguistics. Some sociolinguistic researches indicate a change in progress on the use of the future tense in Brazilian Portuguese, whereupon the standard variant, the simple future form, has been replaced for the periphrastic form (ir + infinitive). These researches show that this change has been completed in the speech and is already reaching writing. This research verify this change in progress in the political discourse, a formal textual genre with features of speech and writing. Some contexts promotes the progress of the periphrastic form, like: a) verbs with three or more syllables; b) younger age group; c) agent subject; d) less stylistic monitoring speech; e) second verbal person; f) regular verbs; g) first event in a serial (about parallelism). The results also show the superiority of the periphrasis ir ?to go? + infinitive; indicate the decline of simple future form; confirm that the simple present tense is used in very specific contexts; show the existence of periphrasis with gerundive forms, called ?gerundismo?, in the standard speech; and indicate the final stage of process of change analyzed. / Analisa-se a express?o do tempo futuro no discurso pol?tico das tr?s maiores cidades baianas, Salvador, Feira de Santana e Vit?ria da Conquista, com base na Sociolingu?stica Variacionista. Diversos estudos atestam que h? uma mudan?a em curso no uso do futuro verbal no portugu?s brasileiro, no qual a forma padr?o, futuro simples, est? sendo substitu?da pela forma perifr?stica ir + infinitivo, tais estudos mostram que a referida mudan?a est? sendo completada na fala e j? est? atingindo a escrita. Este estudo verifica o est?gio dessa mudan?a no discurso pol?tico, g?nero textual formal que apresenta caracter?sticas tanto da fala quanto da escrita. Determinados contextos mostraram favorecer o espraiamento da forma perifr?stica, tais como a) verbos com tr?s ou mais s?labas; b) faixa et?ria mais jovem; c) sujeito agente; d) menor monitoramento estil?stico; e) segunda pessoa verbal; f) verbos regulares; g) primeira ocorr?ncia de uma s?rie (tratando-se de paralelismo). Os resultados tamb?m revelam a predomin?ncia da per?frase ir + infinitivo; apontam a queda do futuro simples; reafirmam que o presente do indicativo ocorre em contextos bastante espec?ficos; revelam a ocorr?ncia de per?frase com ger?ndio, o chamado ?gerundismo?, na linguagem formal e indicam que o processo de mudan?a em an?lise est? em fase de completude.