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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
381

Evolução do magmatismodo domínio cachoeirinha : suítes intrusivas Santa Cruz, Alvorada, Rio Branco e Salto do Céu-SW do cráton amazônico - MT /

Araújo, Larissa Marques Barbosa de. January 2008 (has links)
Resumo: Esta pesquisa enfoca duas áreas distintas pertencentes ao Domínio Tectônico Cachoeirinha que corresponde ao setor oriental dos terrenos pré-cambrianos do sudoeste do Cráton Amazônico em Mato Grosso, constituído pelas seguintes unidades litoestratigráficas: Complexos Metavulcano- sedimentares Cabaçal e Quatro Meninas, Suíte Intrusiva Máfica- ultramáfica, Unidades Ortognáissicas, Tonalito Cabaçal, pelas suítes intrusivas Santa Cruz, Alvorada, Batólito Rio Branco, Grupo Aguapeí e Suíte Intrusiva Salto do Céu. A Área 1, representada pelas rochas granitóides da Suíte Intrusiva Santa Cruz, um batólito com direção NNW, foliado, com três fácies petrográficas principais compostas por biotita monzo a sienogranito e pela Suíte Intrusiva Alvorada, unidade intrusiva individualizada, fracamente anisotrópica composta por vários corpos de pequeno porte plugs, stocks e plutons, subcirculares a subelípiticos e composição monzo a granodiorítica. Os resultados geoquímicos para as suítes Santa Cruz e Alvorada relacionam estas, a Série Monzogranítica, cálcio- alcalina de alto a médio potássio, peraluminosas a metaluminosas sugerindo quanto ao ambiente tectônico, características sin a tardi- colisionais gerados em arco magmático. O padrão de distribuição REE, sugere a intensificação do processo de fracionamento do magma a partir da fase inicial e, possível geração de magmas contemporâneos e cogenéticos de mesmas fontes diferenciadas. A idade U-Pb para a S.I. Santa Cruz apresenta valor de 1561 ± 260 Ma. e a idade TDM sugere um sofreu fracionamento mantélico por volta de 2,0 Ga., enquanto o valor negativo de εNd(t) -0,89 a -2,75 assinalam a participação de material crustal, mais diferenciadas na formação do magma. / Abstract: This research deals with two distinct areas both within the Tectonic Domain of Cachoeirinha that correspond to the eastern portion of the Pre Cambrian terrains in the southwestern region of the Amazonian Craton in the State of Mato Gosso, Brazil. The lithostratigraphic units are: the metavolcanosedimentary Complex of Cabaçal and Quatro Meninas; intrusive mafic-ultramafic suits; orthogneisses Units; Cabaçal Tonalite; intrusive suits of Santa Cruz and Alvorada; Rio Branco Batholith, Aguapeí Group and intrusive Suit of Salto do Céu. The area 1 is represented by the granitic botholith of the Santa Cruz Suit, foliated with NNW direction, showing three petrographic facies dominated by biotite monzo to sienogranite and the Alvorada Intrusive Suit, weakly anisotropic and made up by many small bodies as plugs, stocks and plutons with circular to elliptic shapes and monzo to granitic compositions. Geochemical data for Santa Cruz and Alvorada Suits indicate that they belong to a Monzogranitic series of high to medium K calc alkaline, peraluminous to metaluminous suit suggesting a tardi-collisional magmatic arc environment. The REE distribution suggests an intense process of fractionation of the magma and possible generation of magmas of the same age and co genetic, derived of the same source. U/Pb age determinations shows values of 1551 ± 260 Ma. for the Santa Cruz Intrusive Suit with TDM ages suggesting the fractionate from the mantle at 2.0 Ga. The positive value of +3.50 for εND(t) indicates the presence of magmatic material with mantle signature, while an εND(t) negative of -0,89 to -1,20 characterize the participation of crustal material derived from more differentiated magma source. / Orientador: Antonio Misson Godoy / Coorientador: Maria Zélia Aguiar de Souza / Banca: Antenor Zanardo. / Banca: Marcos Aurélio Faria de Oliveira / Banca: Mauro César Geraldes / Banca: Ticiano José Saraiva dos Santos / Anexo 2 mapas / Doutor
382

IS CORRUPTION INHERENTLY BAD? : The effect of corruption on the Palma ratio: A cross-regional study of Brazil's federal states

Crabo, Amanda, Källestål, Alexander January 2016 (has links)
This thesis analyzes if there, given the size of the informal sector, is an effect of corruption on income inequality, here defined as the Palma ratio. Estimations are done with a fixed effects ordinary least squares regression using panel data for 19 federal states of Brazil over every other year between 2006-2014. The results provide evidence that corruption increases income inequality when the informal sector is smaller than 37.97%, but decreases inequality when the informal sector exceeds 55.34%. The findings are robust to several sensitivity checks. The gained insight of the relationship between corruption and income inequalityusing a microeconomic perspective is the main academic contribution of this thesis.
383

Hospodářské vztahy mezi EU a zeměmi BRIC / Economic relations between the EU and the BRIC

Vančura, Jan January 2011 (has links)
The thesis deals with the economic relations between the European Union and the BRIC countries focusing on Brazil. The general and economic features of the BRIC countries are described in the first chapter, as well as the research of their role in the world economy. The next chapter focuses on the chosen country, Brazil. From the economic point of view it analyses the strengths and weaknesses, foreign trade and it also describes the agreements, that make the basis for the economic relations with the EU. The third chapter characterizes in detail the development and the recent form of the economic relations of the EU in general, between the EU and the BRIC countries, mainly Brazil. The last part gives some thought to the perspective sectors of the mutual relations between the EU and Brazil focusing on the particular form of their future development.
384

Os periódicos da Independência e suas geografias políticas: estudo do surgimento do Brasil independente e de sua inserção no contexto mundial (1808-1822) / The periodicals press at the time of the Independence of Brazil and its political geographies: a study of the emergency of Brazil as na independent nation and its insertion in the international context (1808-1822)

Edú Trota Levati 04 September 2015 (has links)
Esta pesquisa analisa o papel desempenhado pela imprensa luso-americana na criação de um universo geográfico-político referencial entre 1808 e 1822, isto é, no momento crucial de passagem da condição colonial à nacional. Realizar esta epistemologia das cartografias imaginadas significou utilizar-se do método quantitativo para tabular todas as menções, encontradas nos 35 jornais consultados, a diferentes tipos de espaço: hemisférios, oceanos, ilhas, rios, continentes, países, províncias, cidades, vilas e arraiais. A hipótese central aqui sustentada é que os esboços de mapas-múndi daí resultantes projetaram o Brasil de modo inédito, pois os lineamentos políticos que o dotavam de certa singularidade eram reforçados pari passu sua inserção numa nova ordem internacional. De modo que, ao inserir-se num contexto mundial, a própria ideia de um Brasil enquanto corpo político em potencial ia paulatinamente ganhando materialidade. / This research analyses the role played by the Luso-American press in the creation of a geopolitical set of references from 1808 to 1822, that is to say, in the crucial moments of transition from the colonial condition to the national one. Carrying out this epistemology of imagined cartographies meant to make use of the quantitative method to tabulate every mention found in the thirty five newspapers researched made to different categories of space, such as: hemispheres, continents, countries, provinces, cities, hamlets, villages, and campgrounds. The main hypothesis sustained here is that the resulting world maps projected Brazil in a new way, given that its political lineaments that would add some uniqueness to it were strengthened pari passu its insertion in a new international order. In a way that, by entering in a global context, the very idea of Brazil as being able to turn into a political body would slowly become concrete.
385

Cocoa yield, nutrients and shade trees in traditional cocoa agroforests in a climate change context : a case study in Bahia, Brazil

Gateau, Lauranne Aude Marina January 2018 (has links)
Brazil is the world's sixth largest cocoa producer with 270,000 tonnes of cocoa produced per year. In a world with an increasing demand for chocolate, but with agriculture threatened by climate change, the chocolate industry is worried about a possible shortage of cocoa. Furthermore, growing cocoa is a main cause of deforestation. However, in the state of Bahia, Northeast Brazil, cocoa is grown in traditional agroforests called 'cabrucas' which maintain a forest cover. Cocoa, an understorey crop, is planted under the shade of native Atlantic Forest trees and exotic fruit trees introduced by the farmers. These cabrucas have high conservation value but very low cocoa yield. In my thesis I investigate the factors limiting cocoa yield and how to increase yield in cabrucas. I explore the role of shade trees and the nutrient dynamics in litterfall. Finally, I explore the risk that climate change could represent for cocoa production in the future by looking at the effects of an unexpected drought caused by an El Niño Southern Oscillation (ENSO) event between November 2015 and May 2016. My study is based on data collected in permanent transects in 32 randomly chosen cabruca farms in Barro Preto a municipality of Bahia over a period of three years. I also established littertraps in 10 cocoa farms where I intensively studied nutrient dynamics and cocoa yield per tree over 12 months. My results showed that unproductive trees, low cocoa tree density, high shade cover and high cocoa mortality due to drought were the main factors limiting cocoa yield in cabrucas. Surprisingly, adding fertilisers to the cocoa trees did not increase yield. This suggests that there is no nutrient deficiency in cabrucas. In the farms, I found 69 species of shade trees for an average density of 125 ± 32 trees per hectare. Half of the species of shade trees were Atlantic Forest species of conservation value. The litterfall experiment showed the shade tree species and the quantity of litterfall produced, can affect the number of cocoa pods per tree. In cabrucas, a higher number of cocoa pods was found on cocoa trees under shade trees than under no shade. Finally, I showed that the exceptionally severe ENSO-related drought caused 80% loss in yield and 11% cocoa tree mortality in Barro Preto. Climate models predict an increased frequency of strong ENSO events in the future. Farmers in Bahia are not prepared to face regular drought events. The 2015/16 drought affected the dynamics of cocoa production in Brazil: it accelerated the decrease of extensive wildlife-friendly cocoa production in Bahia whereas it increased the development of cocoa production in intensive low shade plantations in the state of Pará. This suggests that climate change could be a threat to traditional cocoa agroforests in Bahia. Developing wildlife-friendly certification schemes and Payment for Ecosystem Services to internalise the value of forest conservation and to encourage farmers to maintain their shade trees could save cabruca systems from going extinct.
386

The social organisation of a central Brazilian tribe : the Akwẽ-Shavante

Maybury-Lewis, David January 1960 (has links)
No description available.
387

Sexualities, Genders, Feminisms, and Education at the Hinge of Brazilian Democracy

January 2018 (has links)
acase@tulane.edu / 1 / Lindsay Bartlett
388

Race matters: race, telenovela representation, and discourse in contemporary Brazil

Joyce, Samantha Nogueira 01 May 2010 (has links)
In Race Matters: Race, Telenovela Representation, and Discourse in Contemporary Brazil I investigate the primetime telenovela Duas Caras (2008), examining how different factors such as narrative, audience reaction, as well as media criticism and commentary played a dynamic role in creating a meta-discourse about race in contemporary Brazil. In a larger sense, I examine how the social discourse about contemporary race relations and racism in that country were circulated, constructed and reconstructed during the time the program aired. Additionally, I explore the role of the media, particularly the telenovela, in debunking the idea that Brazil is a racial democracy. Secondly, the research incorporates the Brazilian notion that telenovelas are "open texts", meaning they are co-authored by a variety of industrial, creative, cultural and social actors, into a methodological approach that expands the traditional idea of textual analysis. In addition to reading the telenovela text itself, this study investigates the production process, audience responses and broader media coverage. Thus, the public discourse about the telenovelas is a key part of the text itself.
389

Between Languages and Cultures: The Ka'apor Navigate Bilingual Language Education in Maranhão, Brazil

January 2017 (has links)
acase@tulane.edu / 1 / Sarah Mellman
390

Ocorrência e caracterização molecular de Cryptosporidium spp. em suínos no município de Araçatuba, estado de São Paulo, Brasil /

Nascimento, Isabela Garcia do January 2019 (has links)
Orientador: Marcelo Vasconcelos Meireles / Resumo: Existem poucos estudos relacionados à epidemiologia e aspectos clínicos da infecção por Cryptosporidium spp. em suínos, especialmente no Brasil. Os suínos apresentam infecções clínicas ou subclínicas e são mais comumente infectados por Cryptosporidium suis e Cryptosporidium scrofarum. O objetivo deste trabalho é determinar a ocorrência e realizar a caracterização molecular de Cryptosporidium spp. em suínos originados de quatro fazendas com sistemas de produção semi-intensivos no Estado de São Paulo, Brasil. Duzentas amostras fecais foram coletadas de suínos, de março a agosto de 2018, e analisadas para verificar a ocorrência de Cryptosporidium spp. por nested PCR visando a amplificação de fragmento parcial do gene da subunidade 18S do rRNA (18S rRNA) e sequenciamento genético. Resultados positivos para Cryptosporidium spp. foram detectados em 17% (34/200) das amostras. O sequenciamento dos fragmentos amplificados identificou C. scrofarum em 10 das 11 amostras sequenciadas. Dessa forma, verificamos que a espécie zoonótica C. scrofarum está presente em fazendas de suínos com sistemas de produção semi-intensivos no Estado de São Paulo e que não houve diferença significativa entre as taxas de prevalência entre suínos de <3 meses e >3 meses de idade. / Mestre

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