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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.
21

Numerical Modeling Of Balcova Geothermal Field

Polat, Can 01 January 2010 (has links) (PDF)
The aim of this study is to construct a numerical reservoir model for Bal&ccedil / ova geothermal field, which is located in the izmir bay area of the Aegean coast. A commercial numerical simulation program, TOUGH2 was utilized with a graphical interface, PETRASIM to model the Bal&ccedil / ova geothermal field. Natural state modeling of the field was carried out based on the conceptual model of the field, then history matching of production &ndash / injection practices of the field was established for the period of 1996 &ndash / 2008. The final stage of modeling was the future performance prediction of the field by using three different Scenarios. In Scenario-1, production and injection rates in year 2008 were repeated for 20 years. In Scenario-2, production and injection rates in year 2008 were repeated for the first 3 years, then they were increased at every 3 years. In Scenario-3, a new well (BT-1) that is assumed to be drilled to 1000 m depth is added for injecting some portion of water that was injected through BD-8 well. In that scenario, similar to Scenario-2, production and injection rates in year 2008 were repeated during the first 3 years, and then the rates of these wells (except the new well) were increased every three years. Analysis of the results indicated that in Scenario-2, compared to Scenario-1, both the temperatures of deep wells located at the eastern portion of the field (BD-6, BD-2, BD-14, BD-9, BD-11, BD-12) and the temperatures of deep wells located at the western portion (BD-4, BD-15, BD-7, BD-5) decreased more. In Scenario-3, compared to Scenario-1, the deep wells located at the eastern side experienced less temperature drops while the deep wells located at the western side experienced higher temperature drops. Such temperature differences were not encountered in shallow wells. No significant changes in bottom hole pressures of deep wells occurred in all three scenarios. On the other hand, shallow wells, especially B-10 and B-5, responded to Scenario-2 and Scenario-3 as decrease in bottom hole pressures.
22

Geochemical Evaluation And Conceptual Modeling Of Edremit Geothermal Field

Avsar, Ozgur 01 February 2011 (has links) (PDF)
Edremit geothermal field with 42-62 &deg / C discharge temperatures is utilized for space heating. Alternation of permeable and impermeable units created two superimposed aquifers in the area: upper unconfined and lower confined. Water samples from 21 (hot, warm, cold) wells were taken in this study. 8 of these wells penetrate the deeper confined, while 13 penetrate the shallower unconfined aquifer. Geochemical analysis revealed Na+K&ndash / SO4 nature for the hot (&gt / 40&deg / C), Ca&ndash / HCO3 nature for the cold (&lt / 30&deg / C) and Ca&ndash / SO4 nature for the warm (30-40&deg / C) waters. &delta / 18O-&delta / D compositions point to a meteoric origin for all waters, while 14C analyses suggest longer subsurface residence times for the hot, compared to the cold/warm waters. Chemical and isotopic compositions indicate that &ldquo / mixing&rdquo / and &ldquo / water-rock interaction&rdquo / are the possible subsurface processes. When silica and cation geothermometers are evaluated together with fluid mineral equilibria calculations, a 110&deg / C reservoir temperature is expected in the field. Saturation indices indicate potential silica scaling for waters at temperatures lower than discharge temperatures. Hydrogeology of the study area is highly affected by faults. The groundwater is percolated (down to 3 km depth) via deep seated step faults, heated at depth and ascends to surface at the low lands, especially through intersection of buried, mid-graben faults. During its ascent towards surface, geothermal water invades the two superimposed aquifers and mixing between hot and cold waters takes place in the aquifers. Resource assessment studies suggest a 3.45x1013 kJ accessible resource base and 9.1 MWt recoverable heat energy for Edremit geothermal field with 90% probability.
23

From the banal to the surreal : Poulenc, Jacob, and Le Bal masqué

Ehman, Caroline January 2005 (has links)
Francis Poulenc (1899-1963) demonstrates a remarkable affinity for surrealist poetry in his numerous settings of leading modernist French poets from the first half of the twentieth century. The poetry of Max Jacob (1876-1944), a once unduly marginalized writer who is now regarded as an influential initiator of surrealism, provided the inspiration for one of Poulenc's most significant works, the chamber cantata Le Bal masque (1932). / This thesis seeks to shed light on Poulenc's largely neglected artistic interaction with Jacob by exploring musical counterparts to the poet's unique surrealist aesthetic in Le Bal masque. Chapter one examines Poulenc's artistic milieu surrounding the composition and first performance of Le Bal masque, and reviews previous literature on Poulenc's involvement with avant-garde art and literature. Chapter two focuses on Jacob himself and discusses key aspects of his subversive poetic aesthetic. Chapter three outlines the fundamental characteristics of surrealist art in general and reviews previous discussions of music and surrealism. The final chapter explores surrealist influences in Le Bal masque while concentrating on musical parallels to central features of Jacob's poetry and surrealist art in general described in the preceding chapters.
24

Loss. meaning and absence in personal collections / Verlies, betekenis en afwesigheid in persoonlike versamelings / Ilahleko , intsingiselo nokungabikho kokuthile kwiingqokelela

Van Zyl, Adelle 08 1900 (has links)
To view the Shelves Catalogue in the correct format: 1. Click "view"; 2. Click "page display"; 3. Click "Two Page View"; 4. Click "Show Cover Page in Two Page View" / This study explores how a narrative view of collecting can be expanded and applied to Ilya and Emilia Kabakov’s installations, as well as to my own artworks. It focuses on personal and intimate collections of everyday objects that serve to edify their owner’s sense of being. The project is undertaken in order to arrive at new interpretations of the themes of loss, meaning and absence through Mieke Bal’s (2006) narrative theory, Susan Pearce (1994) and Mikhail Epstein’s (1995) methods of collecting and Jean Baudrillard’s (1996) notions of the collector. These theories are applied to selected installations from the Kabakovs’ series Ten Characters. My own exhibition, S(h)elves, is an exploration of collections, underpinned by conceptually relevant theories. Conclusions are reached by means of literary analysis and comparison of selected theorists and artworks. A reflexive approach to art-making means that theories inform art-making processes while practical developments facilitate re-evaluated perceptions which lead to new insights. / Art History, Visual Arts and Musicology
25

L'Art Ménétrier Renaissance : comment une approche choréologique de l'Orchésographie de Thoinot Arbeau peut éclairer et renseigner les musiciens sur leurs choix d'interprétations / Renaissance "Art Ménétrier" : an investigation into how a choreological approach of the Orchésographie by Thoinot Arbeau can guide and help musicians to choose how to interpret music

Joly, Robin 15 December 2017 (has links)
Le jeu musical pour les danses de la Renaissance, comme pour les autres répertoires, a ses propres codes et ses propres exigences. Dans les danseries imprimées à plusieurs parties en Europe de 1528 (premier livre de danseries des imprimeries Pierre Attaingnant) à 1588 (première édition de l’Orchésographie de Thoinot Arbeau), il s’agit de repérer les récurrences mélodiques, rythmiques et contrapuntiques des partitions. Par ailleurs, il s’agit également de définir les caractéristiques de chaque danse (tempo, mesure et métrique). Ces analyses ont permis, entre autres, de déceler deux grandes familles de danses récréatives : les danses de côté et les danses de marche. Elles ont chacune leurs spécificités en termes d’interprétation. Par exemple, les premières se concentrent sur l’accompagnement des directions alors que les secondes nécessitent une articulation sur chaque appui. Il ne reste, ensuite, qu’à mettre en perspectives ces observations pour faire valoir cette interdisciplinarité et exceller en art ménétrier. / The way of playing for Renaissance dances has its own codes and its own demands, as in other musical repertoires. In the dance pieces printed for several voices in Europe from 1528 (first book of dance pieces printed by Attaingant) until 1588 (first edition of the Orchésographie by Thoinot Arbeau), one should notice out the melodic, rhythmic and counterpointistic recurrences in the scores. On the other hand, one should also define each dance characteristic (tempo, mesure and metric). Those analysis allowed to spot, among other things, two large families of recreational dances: the side dances and the walking dances. Each of them have their own requirements in terms of interpretation. For example, the first ones concentrate on the fact of accompanying the directions meanwhile the second ones need some articulation on each foot step. One only needs then to put into perspective those observations to excel in the “art ménétrier” (“minstrel art” or art to play for dancing).
26

Desenvolvimento de um painel sandu?che com carga de particulado oriundo de res?duo lignocelul?sico para aplica??o em produtos na ?rea de equipamentos de prote??o

Serafim, Felipe Morais Fernandes 16 November 2015 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-06-03T23:57:10Z No. of bitstreams: 1 FelipeMoraisFernandesSerafim_DISSERT.pdf: 2615030 bytes, checksum: c5cdd1f3e33cd45acd31d95163c78d6a (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-06-07T20:57:49Z (GMT) No. of bitstreams: 1 FelipeMoraisFernandesSerafim_DISSERT.pdf: 2615030 bytes, checksum: c5cdd1f3e33cd45acd31d95163c78d6a (MD5) / Made available in DSpace on 2016-06-07T20:57:49Z (GMT). No. of bitstreams: 1 FelipeMoraisFernandesSerafim_DISSERT.pdf: 2615030 bytes, checksum: c5cdd1f3e33cd45acd31d95163c78d6a (MD5) Previous issue date: 2015-11-16 / O trabalho objetiva investigar o uso de uma estrutura de sanduiche h?brida formada com tecido de fibras de kevlar (Kevlar 49), manta de fibras de vidro do tipo E e particulado do endocarpo do coco seco (Cocos Nuc?fera Linn), tendo como matriz a base de resina termofixa de tereftalato de poli?ster para o uso em ?reas de equipamento de prote??o. O processo de fabrica??o adotado foi o de lamina??o manual (hand lay up) para confeccionar a estrutura h?brida. Para caracterizar o comportamento mec?nico e f?sico foi fabricada uma placa de 800x700 mm? do painel h?brido, da qual foram preparados corpos de prova para os ensaios de absor??o de umidade, tra??o uniaxial, densidade volumetrica, impacto (Charpy) e testes bal?sticos. Este ?ltimo foi aplicado para que fosse feito um estudo comparativo da fratura bal?stica causada pela penetra??o do projetil bal?stico de calibre 38 e 380, N?vel I e N?vel III, respectivamente. Houve tamb?m analise do di?metro de entrada e sa?da do projetil, como da ?rea de dano delaminada. Para o ensaio de Impacto (Charpy), foram analisadas a energia absorvida e a caracter?stica da fratura, para, assim, ser analisado o comportamento da configura??o proposta. Todos os testes realizados tem por finalidade a aplica??o nas ?reas de equipamento contra impacto bal?stico, tais como, capacetes; coletes ? prova de bala; blindagens; embalagens de prote??o entre outros itens a serem identificados nesta pesquisa. Os resultados obtidos apontam para aplica??es onde envolvem solicita??es trativas para este material, por?m, o mesmo obteve valores baixos de energia absorvida no ensaio de impacto. No teste bal?stico, houve penetra??o total das placas, mas com significativa ?rea delaminada. / This work aims to study and investigate the use of a hybrid composite polymer formed with blanket aramid (Kevlar 29) fiber blanket flax fiber and particulate dry endocarp of coconut (Cocos nucifera Linn), using as matrix an epoxy resin based thermoset for use in areas of protective equipment. Besides such material is used an aluminum plate, joined to the composite by means of glue based on epoxy and araldite commercial. The manufacturing process adopted was manual lamination (Hand Lay Up) to manufacture the hybrid composite. After the composite is prepared, an aluminum plate is subjected to pressure and glued to cure the adhesive. Layers of veil will also be used to separate the particulate from the linen blanket layer without disturbing the alignment of the fibers of the blankets. To characterize the mechanical and physical behavior was manufactured a plate of 800 x 600 mm of the hybrid composite, which were removed specimens for tests of water absorption to saturation; density; impact test (Charpy) and two test specimens for ballistic testing 220 mm x 200 mm to make a comparative study between the dry state and saturated water absorption and thus see the ballistic performance of these two conditions. The test was applied to make a comparative study of fracture in these two conditions, caused by penetrating ballistic missile (38 and 380). To test the impact (Charpy) will analyze the absorbed energy, fracture appearance and lateral contraction, also in dry condition and saturation of absorbed water, thereby analyzing situations where the impact load is relevant, such as bumps and shocks produced by stone, metal or wooden bars among others. The proposed configuration, along with the tests, has the purpose, application in the fields of equipment against ballistic impact, such as helmets; bullet proof vests; shields; protective packaging and other items to be identified in this research.
27

The Biochemical Reactions Of Dry State Dna

Marrone, April 01 January 2009 (has links)
The biochemistry of dry state DNA is of interest to the fields of forensics, ancient DNA, and DNA storage. The exact chemical nature of the degradation of the DNA molecule in the dry state has not been studied prior. If determined what chemical changes the DNA molecule undergoes, to what degree and in what time frame then protocols can be implemented to bypass the impact of this damage or to repair it when necessary. It is suspected that similar reactions occur to the dry state DNA molecule as does to the hydrated molecule. It cannot be assumed, however that these types of chemical processes occur to the same extent and at the same rates. In general the generic process of hydrolysis encompasses two important reactions, that of deamination and of base loss from the 2’-deoxyribose backbone. Base loss is believed to ultimately lead to chain scission. It is also suspect that reactive oxygen species (ROS) have an important role in the chemistry associated with DNA. Species such as hydroxyl radicals (OH•) and singlet oxygen (1O2) can lead to strand scissions and chemically modified bases. Throughout this project various techniques were used to determine damage to DNA and its molecular constituents under conditions leading to hydrolytic and oxidative damage. Novel techniques used in this study include ionpairing chromatography and denaturing HPLC (DHPLC) to measure glycosidic bond cleavage and strand breaks. The extent to which the macromolecule haemoglobin (Hb) can lead to oxidative damage of DNA in dried blood stains by acting as a Fenton chemistry catalyst was evaluated. Additionally the enzymatic activity of the extracellular nuclease from Alteromonas espejiana, BAL 31 was studied as it pertains to the degradation of single-stranded short homopolymeric oligonucleotides. This study serves as the basis for future, more in depth experimentation into the more specific nature of dry state DNA biochemistry. It was found that to a large extent the same degradation reactions (base hydrolysis, base modifications, and strand breaks) do occur in the dry state as in the hydrated state when heat and UV radiation are used as energy sources. Reaction rates indicate that base hydrolysis and deamination occur much more slowly, yet have the same energies of activation in both states. Single strand breaks of dry state duplex DNA occur with a half life of 24 ± 2 days and appears to occur in a mechanistic manner which could be of interest when attempting to repair such damage. In addition, base loss alone does not correlate with the extent of single strand breaks detected. Thermodynamic data can lead to the conclusion that DNA degradation in both dry and hydrated states is not a spontaneous process. It is also concluded that though the Hb molecule undergoes oxidative changes over time, these changes do not impact its ability to become a more aggressive Fenton reagent. However, the presence of Hb in the vicinity of DNA does create the opportunity for OH•induced damage to the deoxyribose sugar, and most likely the DNA bases themselves. This study also reveals that the general purpose BAL 31 nuclease commonly used in molecular genetics exhibits a hithertofore non-characterized degree of substrate specificity with respect to single-stranded DNA oligomers. Specifically, BAL 31 nuclease activity was found to be affected by the presence of guanine in ssDNA oligomers.
28

From the banal to the surreal : Poulenc, Jacob, and Le Bal masqué

Ehman, Caroline January 2005 (has links)
No description available.
29

Man ville vara modern : En analys av modernistiska strömningar i svenska stumfilmsaffischer / They wanted to be modern : An analysis of modernistic tendencies in the Swedish silent film posters

Peterson, Caroline January 2011 (has links)
Purpose of this essay is to conduct a style analysis of Swedish silent film posters with visual storytelling and cultural memory as a theoretical basis. Concepts such as design, color and technique are studied to highlight the historical context of Swedish silent film posters.
30

Náboženské motivy skupiny Die Pilger / Religious Motifs in the Works of the Art Group "Die Pilger"

Ficková, Barbora January 2019 (has links)
Religious motifs in the works of the Art Group "Die Pilger" Abstract: The topic of this Thesis is the German-Czech art group called Die Pilger which was active mainly in Prague between 1920-1923. Its main specific feature was a strong focus on religious motifs among which Bible themes prevailed. However, religious motifs were not portrayed in a historical manner but the group often used unusual modern means of expression. However, the religious focus of the group was not proclaimed anywhere, nor did it correspond to all the work produced by the members of the group. The thesis focuses on the religiously motivated creation of the group and analyses what specific themes the artists have chosen. The aim, however, is not to list the depictions and their frequency, but to interpret individual ways of processing the given motif and through it to define the relationship of the group to these motifs and the reasons for their use. Semiotics seems to be the most appropriate examination method to apply in this case which allows you to move away from the historical burden of works and focus only on their content. The second part of the thesis analyses the narrative that is associated with the group and which significantly influences the way we perceive the work of the group. In addition to the interpretation of...

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