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Producing biodiesel from triacylglycerol (TAG) generates glycerol as a byproduct which could be recycled and used to grow the oleaginous yeast Rhodotorula glutinis. R. glutinis has the ability to produce up to 70% of its weight in the form of TAG. This study is designed to determine the effects of glycerol on the TAG and fatty acids produced by R. glutinis. After 24 hrs, R. glutinis cultured on medium containing dextrose, xylose, glycerol, dextrose and xylose, xylose and glycerol, or dextrose and glycerol accumulated 16, 12, 25, 10, 21, and 34% TAG on a dry weight basis, respectively. The fatty acids derived from R. glutinis were mostly saturated, however, cells cultivated on glycerol alone had the highest degree of unsaturated fatty acids (53%). Growth on dextrose may be enhanced by the addition of glycerol, but it cannot be determined if using glycerol as a secondary carbon substrate enhances lipid production.

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Previous critics have paid insufficient attention to the political implications of Yeats's life-long preoccupation with a wide range of Western and Eastern religious traditions. Though he always preserved some skepticism about mysticism's ability to reshape the material world, the early Yeats valued the mystical idea of oneness in part because he hoped (mistakenly, as it turned out) that such oneness would bring Catholic and Protestant Ireland together in a way that might make the goals of Irish nationalism easier to accomplish. Yeats's celebration of mystical oneness does not reflect a pseudo-fascistic commitment to a static, oppressive unity. Like most mystics—and most modernists—Yeats conceived of both religious and political oneness not as a final end but rather as an ongoing process, a "way of happening" (as Auden put it).

As a young man of twenty-one in 1886, William Butler Yeats announced his ambition to unify Ireland through heroic poetry. But this prophetic urge lacked structure. Yeats had only some callow notions about needing self-possession and appropriate control of his imagery. As a result, his search for essential knowledge and experience soon led him into occult and symbolist vagueness. Yeats' mind grew flaccid, and his art languished in preciosity for over a decade. Lotos-eating had replaced prophetic fervor. However, early in the new century, as Yeats neared middle age and permanent mediocrity, he recovered his early zeal and finally found the means to give it artistic shape. Through daily theatre work he had discovered tragedy. And through personal trials he had developed a tragic sense. Hence, an entire tragic perspective was born, one that would dominate Yeats' mind and art the rest of his life. Locating the contours of Yeats' shift in-viewpoint, then, provides the key to understanding the man and his mature work. The present study does just that, tracing the origin, development, and elaboration of Yeats' tragic perspective, from its theoretical underpinnings to its poetic triumphs. Above all, this study supplies the basic context of Yeats* careers why he took the path he did, and how he wove all that he found along the way into a remarkable fabric.

One of the most important elements in Yeats' thought is his view of the tragic basis of art. This conception, which can best be called a tragic aesthetic, was developed shortly after 1900 in three prose works--certain fragments of the Samhain publication (1904), "Poetry and Tradition" (1907), and "The Tragic Theatre" (1910). The tragic view developed in these essays became the conceptual basis behind much of Yeats' poetry and therefore played a central role in the direction of his career. This thesis traces the lineaments of Yeats' tragic aesthetic in these early essays, determining its outline in the dreamy, often vague language in which it is expressed, and shows its impact on his poetry from 1904 to the end of his career in 1939.

Over the last half century, the words of poet William Butler Yeats have been referenced in book titles, epigraphs, movies, television, and music with surprising constancy, asserting his place in our collective cultural consciousness. This study examines how and why these appropriations function to perpetuate Yeats’s elevated canonical status, provide a means of ethnic identification and legitimization, and enable the literary emergence of those who place their names alongside his. Through discussions of Frank Norris’s McTeague, W.H. Auden’s “In Memory of W.B. Yeats,” Chinua Achebe’s Things Fall Apart, and Alice McDermott’s Charming Billy, I examine the complex relationship between each text and the career of both its author and Yeats to demonstrate how and why Yeats matters. Yeats himself may have donned many masks, but his poems have themselves become masks, offering his appropriators a means of identification. For Irish Americans in the early twentieth century, he offered humanity and hope in the face of Norris’s Anglo-American prejudice; he provided Auden with a site to explore his own anxieties about the place of the poet and the role of poetry in the Modern world; he legitimized Achebe’s African narrative while also supplying him with a template and the resources to interact and critique Western conceptions of history; and, for McDermott, his early poetry embodied the dream of an idealized Ireland that plagued many Irish Americans throughout the century. Ultimately, it becomes apparent that Yeats affords both cultural capital and a productive site for exploration to authors and critics who utilize his name and work, crafting and maintaining his reputation while simultaneously shaping their own. / Department of English

Tracing the development of his dance imagery, this dissertation argues that Yeats's collaborations with various early modern dancers influenced his conceptions of the body, gender, and Irish nationalism. The critical tendency to read Yeats's dance emblems in light of symbolist-decadent portrayals of Salome has led to exaggerated charges of misogyny, and to neglect of these emblems' relationship to the poet's nationalism. Drawing on body criticism, dance theory, and postcolonialism, this project rereads the politics that underpin Yeats's idea of the dance, calling attention to its evolution and to the heterogeneity of its manifestations in both written texts and dramatic performances. While the dancer of Yeats's texts follow the dictates of male-authored scripts, those in actual performances of his works acquired more agency by shaping choreography. In addition to working directly with Michio Ito and Ninette de Valois, Yeats indirectly collaborated with such trailblazers of early modern dance as Loie Fuller, Isadora Duncan, Maud Allan, and Ruth St. Denis. These collaborations shed important light on the germination of early modern dance and on current trends in the performative arts. Registering anti-imperialist and anti-industrialist agendas, the early Yeats's dancing Sidhe personify a romantic nationalism that seeks to inspire resistance to the cultural machinery of British colonization. In his middle career, these collective Sidhe transmute into the solitary figure of a bird-woman-witch dancer, who, resembling the soloists of early modern dance, occupies center stage without any support from men and (to some extent) contests patriarchal assumptions. The late Yeats satirizes the imposition of sexual, racial, and religious purity on postcolonial Irish identity by means of Salome-like dances in which "fair" dancers hold the severed heads of "foul" spectators. These dances blur customary socio-political boundaries between fair and foul, classical and grotesque. Early to late, the evolution of Yeats's dancers reflects his gradual incorporation of more innovative female roles partly resembling those created by the pioneers of modern dance.

Les mythologies – gréco-romaine, irlandaise, perse, indienne, japonaise, chinoise –sont omniprésentes dans la poésie de Bunting, Eliot, Pound et Yeats. Les prédilections desauteurs pour certaines mythologies, véritables choix identitaires et politiques, montrenttoutefois une péroccupation commune pour les mythes violents, aux niveaux martial et sexuel.Ce premier niveau thématique se combine avec une réflexion plus distanciée sur le mythe,outil critique qui permet la reformulation de croyances rituelles et spirituelles, et de nouvellesthéories poétiques qui visent à ordonner et donner un sens au monde chaotique du XXe siècle.Le mythe, subversif, permet donc l’articulation de nouvelles spiritualités et denouvelles expériences poétiques. Enfin, matériau vivant et modelable, dont la mention est à lafois un raccourci de récits anciens et un horizon élargi vers d’autres références et réécritures,le mythe est objet linguistique. En traduction, le mythe transfert les contenus thématiques,déplace les rythmes et fait circuler et s’entremêler les arts. En effet, retour fantasmé à uneorigine du langage artistique, le mythe est parfois fiction d’un art total où les figuresmythiques seraient à la fois objet linguistique, représentation imaginaire picturale etmanifestation musicale. De cette vision du mythe émane une poésie polyphonique et hybride,à l’image du centaure et des autres créatures monstrueuses présents dans l’oeuvre poétique deBunting, Eliot, Pound et Yeats. / Greek and Roman, Irish, Persian, Indian, Japanese and Chinese mythologies areeverywhere in the poetry of Bunting, Eliot, Pound and Yeats. Their favouring somemythologies over others are often justified by their definitions of identity and politics. Yettheir common point is a recurent rewriting of sexually or martially violent myths. Secondly,more than a theme, myth also provides a distanced reflection which enables the poets toformulate new ritual and spiritual beliefs, together with a new poetics meant to order andmake sense of what is seen as a chaotic 20th century.Finally, myth is a living and protean material, whose presence is both a shorthand forolder narratives and a broader horizon pointing to other rewritings. In its linguistic dimension,myth in translation emphasizes questions of rhythm and enables the incorporation of other artsinto poetry. Indeed, the use of myth suggests a fantasized return to the origins of language andthe arts. Myth enables poets to try and create total art works where mythical figures are bothlinguistic and musical objects, as well as pictural representations of the imagination. From thepossibilities afforded by myth stems a polyphonic and hybrid poetry, akin to the image of thecentaur and other monstrous creatures present in the poetic works of Bunting, Eliot, Poundand Yeats.

Uma das mais influentes figuras da literatura irlandesa, o escritor W. B. Yeats conta com uma vasta obra em diversos gêneros (poesia, prosa ficcional, ensaios, teatro, autobiografias) e que se estende por uma longa carreira, do final dos anos 1880 até sua morte, em 1939. Durante todos esses anos de intensa atividade, Yeats acumulou uma profícua correspondência, da qual quase oito mil cartas sobrevivem. Parte de um esforço de décadas, vêm sendo publicados volumes das Collected Letters of W. B. Yeats, um projeto de edição crítica completa da correspondência ativa do autor sob edição-geral de John Kelly para a Oxford University Press. Partindo de uma análise do histórico de publicação das cartas do escritor até o presente momento da edição de John Kelly, esta tese contextualiza as diferentes formas como o rico material das cartas foi utilizado pela crítica do autor e propõe uma exploração das epístolas que Yeats envia a periódicos de língua inglesa para publicação nas seções de Cartas ao Editor, ao final do século XIX. O recorte proposto e a abordagem adotada baseiam-se em um entendimento da correspondência de escritores como um campo de estudo distinto, regido por preocupações que remetem a características específicas do gênero carta. Ancorando-se em diversos outros estudos sobre a escrita epistolar, sejam eles de cunho mais teórico (como DIAZ, 2002), sejam aplicados a escritores específicos (como STANLEY, 2011), a presente pesquisa explora a correspondência aberta do jovem Yeats para ressaltar os usos políticos que ele faz desse tipo de texto. Considerando-se diferentes temas e controvérsias nas quais ele se envolve, partese de uma contextualização do conteúdo referencial das cartas para uma análise das formas como o escritor busca engajar-se com o leitor com o intuito de convencêlo. O estudo revelou que o período escolhido é rico em material sobre a relação entre a literatura e a construção da identidade seja a identidade pessoal e artística do próprio poeta, que busca definir-se em relação à tradição, seja a identidade de toda uma literatura nacional. Para o poeta, definir o cânone nacional irlandês era uma condição essencial para a independência política, uma antiga reinvidicação de parcelas do povo irlandês e que volta a ter grande relevância com os movimentos nacionalistas dos séculos XIX e XX. A análise das estratégias utilizadas por Yeats nas cartas abertas revela uma crescente sofisticação de técnicas e no uso das potencialidades dialógicas e performativas da escrita epistolar e demonstra, concomitantemente, seu amadurecimento como escritor. / One of the most influential figures in Irish literature, the writer W. B. Yeats has produced a vast oeuvre spanning many genres (poetry, prose fiction, essays, theater, autobiographies) and extending over a long career, from the late 1880s until his death in 1939. During all these years of intense activity, Yeats accumulated a fruitful correspondence, of which nearly eight thousand letters survive. Part of an effort of decades that have been published as The Collected Letters of W. B. Yeats, an ongoing critical edition of the authors correspondence under the general editorship of John Kelly for the Oxford University Press. From an analysis of the history of publication of the writers correspondence until John Kellys edition, this thesis contextualizes the different ways in which this rich material has been used by Yeats criticism and proposes an exploration of the letters Yeats sends to periodicals for publication in the Letters to the Editor section during the end of the nineteenth century. The proposed focus and approach are based on an understanding of the writers correspondence as a distinct field of study, governed by concerns that refer back to the specific characteristics of the letter genre. Anchored by several other studies on epistolary writing, both from a more theoretical nature (as DIAZ, 2002) or applied to specific writers (as STANLEY, 2011), this research explores the open correspondence of the young Yeats to highlight the political uses of this kind of text. Considering different issues and controversies in which he engages, the study includes a contextualization of the content of the letters and an analysis of the ways in which the writer seeks to engage with readers in order to convince them. The research found that the chosen period is rich in material dealing with the relationship between literature and the construction of identity be it the personal and artistic identity of the poet, who tries to define himself in relation to tradition, or the identity of a national literature. For the poet, defining Irish national canon was an essential condition for political independence a centuries-long aspiration of the Irish people that once again achieves great relevance among the nationalist movements in the nineteenth and twentieth century. The analysis of the strategies used by Yeats in open letters reveals a growing sophistication in terms of the techniques and his use of the dialogical and performative potentials of the epistolary writing, concomitantly revealing how he matures as a writer.