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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.
11

Felix Mendelssohn-Bartholdy: Konsertstycken op.113/114 : klarinettistisk ekvilibrism under 1800-talet

Wetterbrandt, Gustav January 2018 (has links)
Felix Mendelssohn-Bartholdy levde under första halvan av 1800-talet. Utöver att vara ett underbarn likt Wolfgang Amadeus Mozart var han även en mycket socialt kapabel person. Detta gynnade honom mycket då hans kompositionsförmåga lyftes fram som enastående av framstående personer som Johann Wolfgang von Goethe och drottning Victoria av Storbritannien. Han var en mycket produktiv komponist och skrev under sitt liv mängder av orkestermusik, kammarmusik, operor, solokonserter och pianoverk. I detta arbete har jag fördjupat mig i hans två Konsertstycken Op.113/114 för klarinett, bassetthorn och orkester, som Mendelssohn skrev till klarinettisterna Carl och Heinrich Bärmann. Syftet med denna studie är att öka förståelsen för dessa två förbisedda verk samt jämföra instuderingsprocessen av en dubbelkonsert med det av en solokonsert. Jag har genom användning av partitur från G. Henle verlag analyserat Op. 113 och skrivit om mina konstnärliga ställningstaganden under instuderingsprocessen av både Op.113 och Op.114. Ur analysen framgår att musiken har allt annat än en strikt struktur. Mendelssohn bryter gärna de strukturella mönstren som förväntas av honom. Ur instuderingsprocessen framgår att arbetet med en dubbelkonsert har både stora för- och nackdelar jämfört med arbetet av en solokonsert, men att möjligheten till en diskussion mellan två parter är mycket givande för att skapa sig en klar bild av vad man vill komma fram till med sitt framförande av verket. Denna studie strävar efter en ökad fördjupning och förståelse av olika infallsvinklar som leder till en mer genomarbetad konstnärlig instuderingsprocess. / <p>F.J. Haydn  - Symfoni nr. 104 i D-dur, Hob.I:104, F. Mendelssohn-Bartholdy - Konsertstycken nr.1 och nr.2, Op.113/114, L.v. Beethoven - Symfoni nr. 2 i D-dur Op.36. Som Howie - Klarinett, Gustav Wetterbrandt - Bassetthorn, Mats Zetterqvist - ledning, KMH symfoniorkester. Inspelning från konserten med ovan nämnda medverkande finns tillgänglig.</p>
12

Estudo das frações hidrofóbica e hidrofílica de metacestódeos de Taenia saginata no diagnóstico sorológico da neurocisticercose humana

Gonçalves, Flávia de Assunção 29 January 2008 (has links)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Neurocysticercosis (NC) caused by the Taenia solium metacestodes usually affects the central nervous system and can be confused with other brain pathologies, which present similar clinical and image findings. This parasitose is endemic in Brazil and the serological diagnosis of NC is of great importance in routine clinical management of patients. The search for alternative antigens for NC immunodiagnosis is importance because of the difficulty of obtaining parasites from naturally infected pigs for the preparation of metacestodes T. solium homologous antigen. Once that purified antigen is more sensitive and specific than crude saline extracts, the objective of this study was to evaluate the performance of enzyme linked immunosorbent assay (ELISA) and Immunoblotting (IB) for the serological diagnosis of human NC, using the crude saline extract (Crude) obtained from T. saginata metacestodes and two fractions of this extract, hydrophobic or detergent fraction (D) and hydrophilic or aqueous fraction (A), purified by extraction with Triton X-114 as alternative purified antigens for the diagnosis of human NC. Serum samples were obtained from 115 individuals: 40 patients with a definitive diagnosis of NC, 45 patients with Taenia sp. and with other parasitic diseases and 30 apparently healthy individuals. The serum samples were diluted 1:200 for ELISA but only the samples positives were diluted 1:100 and evaluated in IB. ELISA sensitivity and specificity were 95% and 73.3% when using Crude, 95% and 82.6% for D phase and 65% and 61.3% for A phase, respectively. The diagnostic efficiency and Youden index were: 83.9% and 0.74 (Crude), 88.5% and 0.80 (D phase) and 72.8 % and 0.46 (A phase), respectively. IB of the antigens confirmed the results obtained by ELISA, and the D phase antigen proved to be more specific than other extracts, showing only one immunodominant protein of 70-64 kDa that was the most frequent (92.5%) among patients with NC. Our results suggest that the D phase obtained with Triton X-114 can be used as heterologous purified antigen for the serological diagnosis of human NC in the IB. / A Neurocisticercose (NC), resultado do acometimento do sistema nervoso central pelas formas metacestódeas de Taenia solium, é uma doença polimórfica podendo ser confundida com outras síndromes neurológicas que apresentam achados clínicos e de imagem similares. Uma vez que esta parasitose é endêmica no Brasil o diagnóstico sorológico é de grande importância, pois auxilia na rotina laboratorial de pacientes com suspeita clínica. A busca por antígenos alternativos se faz necessária diante da dificuldade de obtenção de suínos naturalmente infectados com metacestódeos de T. solium, para a produção do antígeno homólogo. Uma vez que antígenos purificados apresentam sensibilidade e especificidade superiores aos extratos totais, o objetivo deste estudo foi avaliar os testes enzyme linked immunosorbent assay (ELISA) e Immunoblotting (IB) no diagnóstico sorológico da NC humana utilizando o extrato salino total (S) de metacestódeos de Taenia saginata e suas frações purificadas com Triton X-114 (TX-114). Uma alíquota do extrato S foi fracionada com TX-114, para obtenção das frações antigênicas: hidrofóbica ou detergente (D) e hidrofílica ou aquosa (A). Os extratos antigênicos foram analisados em SDS-PAGE 12% e utilizados no ELISA na concentração de 10&#956;g/mL. Foram analisadas 115 amostras de soro: 40 de pacientes com diagnóstico definitivo de NC, 45 de pacientes com Taenia sp. e por outros parasitos e 30 de indivíduos saudáveis. As amostras foram diluídas a 1:200 para o ELISA, sendo apenas as positivas submetidas ao IB, na diluição de 1:100. A sensibilidade e especificidade do ELISA foram: 95% e 73,3% (S), 95% e 82,6% (D) e 65% e 61,3% (A), respectivamente. O cálculo de eficiência do diagnóstico e Youden Index foram: 83,9% e 0,74 (S); 88,5% e 0,80 (D) e 72,8 % e 0,46 (A), respectivamente. No IB a fração D apresentou com exclusividade a banda imunodominante de 70-64 kDa, sendo detectada em 92,5% dos pacientes com NC. A fração D foi significativamente mais eficiente que a fração A, tanto no ELISA quanto no IB, sendo assim, recomendada como antígeno heterólogo purificado no diagnóstico sorológico da NC humana no IB. / Mestre em Imunologia e Parasitologia Aplicadas
13

Achromobacter xylosoxidans : épidémiologie au centre de ressources et de compétences de la mucoviscidose de Dijon et réservoir environnemental / Achromobacter xylosoxidans : epidemiology among cystic fibrosis patients in Dijon, Burgundy and environmental reservoir

Amoureux-Boyer, Lucie 12 December 2013 (has links)
Achromobacter xylosoxidans est un bacille à Gram négatif non fermentaire émergent dans la mucoviscidose. A Dijon, la prévalence de patients colonisés est élevée au Centre de Ressources et de Compétences de la Mucoviscidose par rapport à la moyenne nationale, et augmente également chez des patients hospitalisés atteints d’autres pathologies. Les réservoirs et le mode de contamination des patients sont inconnus.Les objectifs de ce travail étaient de décrire la situation épidémiologique dans notre CRCM et de mettre en évidence d’éventuelles sources de contamination pour les malades en Bourgogne.Dans une première étude rétrospective, toutes les souches d’A. xylosoxidans isolées chez les patients du CRCM depuis le début de leur suivi jusqu’en 2010 ont été analysées. Sur 120 patients, 21 ont présenté au moins une culture positive. Le génotypage par électrophorèse en champ pulsé n’a montré que de rares cas de transmissions croisées. Les résistances acquises aux antibiotiques sont fréquentes : ciprofloxacine (dès primocolonisation), ceftazidime et carbapénèmes (colonisations chroniques). Notre protocole de détection d’A. xylosoxidans dans l’environnement a permis d’isoler 50 souches (lavabos, douches, rivières, lacs) : 33 à l’hôpital, 9 à domicile et 8 dans la nature. Ces isolats partagent des caractéristiques avec les souches cliniques : 6 génotypes communs et résistance constante à la ciprofloxacine. Le risque de contamination des patients à domicile ou à l’hôpital est donc réel.D’autres études sont en cours afin de mieux comprendre l’émergence de cette bactérie, ses mécanismes de résistance acquise aux antibiotiques et les facteurs favorisant sa sélection dans l’environnement. / Achromobacter xylosoxidans is an aerobic nonfermentative Gram-Negative rod considered as an important emerging pathogen among cystic fibrosis (CF) patients worldwide. In Dijon (Burgundy), the prevalence of colonised patients is high among CF patients and increasing among non-CF hospitalised patients. The natural habitat of this organism as well as the possible sources of patient contamination remain unknown.The aims of this study were to report the first epidemiological data about A. xylosoxidans in a French CF centre and to identify potential reservoirs of this organism in Burgundy. In a retrospective study, all the isolates recovered from the patients affiliated with our centre in 2010 since their first visit were analysed. Out of 120 patients, 21 (17.5%) had at least one positive culture with A. xylosoxidans. Genotyping analysis by Pulsed Field Gel Electrophoresis revealed that cross-Contamination was very rare. Acquired resistance was frequent to ciprofloxacin (since primocolonisation), to ceftazidime and to carbapenems (in persistent colonisations). Thanks to our protocol designed to detect A. xylosoxidans in environment, a total of 50 strains were isolated in hospital (33 isolates), domestic (9 isolates) and outdoor (8 isolates) samples, mainly in handwashing sinks, showers, and water. These environmental isolates shared characteristics with clinical ones: 6 genotypes in common and a constant resistance to ciprofloxacin. These results reveal potential sources of contamination for the patients at home or in hospital. Further studies are needed to help understanding the emergence of this bacterium and the mechanisms involved in acquired antibiotic resistance.
14

Extração líquido-líquido de ácido clavulânico empregando sistemas micelares mistos de duas fases aquosas / Liquid-liquid extraction of clavulanic acid employing two-phase aqueous mixed micellar systems

Valéria de Carvalho Santos 06 March 2009 (has links)
O ácido clavulânico é um potente inibidor de &#946;-lactamases utilizado como terapêutico em associação à amoxicilina. O processo industrial de obtenção envolve o cultivo bacteriano em processo descontínuo, enquanto que a sua purificação é realizada, principalmente, por processos de extração líquido-líquido com solventes orgânicos e etapas cromatográficas. Assim, métodos alternativos como a purificação empregando sistemas micelares de duas fases aquosas (SMDFA), os quais oferecem um ambiente hidrofóbico e hidrofílico que possibilita seletividade na partição de biomoléculas de acordo com sua hidrofobicidade, são de grande interesse. Neste trabalho estudou-se a viabilidade da utilização de sistema micelar misto (não-iônico/aniônico) de duas fases aquosas formados pelos tensoativos não-iônico Triton X-114 e aniônico AOT na extração do ácido clavulânico proveniente de cultivo submerso de Streptomyces clavuligerus em processo descontínuo. A estabilidade do ácido clavulânico em relação ao pH, sais e suas concentrações, temperatura e aos tensoativos foi investigada visando limitar as regiões a serem estudadas nas extrações. Determinou-se ainda o ponto névoa dos sistemas Triton X-114/Tampão e Triton X-114/AOT/Tampão em diferentes condições, bem como, estudos de migração da biomolécula para as fases e do tempo necessário para o equilíbrio do sistema. A partir destas investigações iniciais, foram definidos os níveis das variáveis: concentração de AOT (0,50, 0,75 e 1,00 mM), Triton X-114 (1, 3 e 5% m/m), NaCl (0, 0,05 e 0,10 M) e temperatura (24, 26 e 28°C), cujas influências sobre o coeficiente de partição (KAC) e recuperação da biomolécula na fase diluída (nAC) foram investigadas através de um planejamento fatorial. A análise estatística e o modelo matemático obtido a partir dos resultados para KAC revelou ser possível obterem-se KAC&#8776; 1,65 e nAC&#8776; 71,58%. No entanto, a análise estatística empregando nAC como resposta apontou condições experimentais desprovidas de significado físico-químico. Em experimentos seriados realizados com Triton X-114 3% m/m, Tampão Mcllavine pH 6,5 e adição gradual de AOT, um aumento da concentração deste tensoativo levou a maiores KAC e Balanço de massa (BMAC)&#8776; 85%. Desta forma é possível concluir que o sistema micelar misto de duas fases aquosas proporciona baixa perda da biomolécula e partição para a fase diluída, que é uma vantagem devido a menores problemas em uma etapa subsequente de purificação. / Clavulanic acid is a potent inhibitor of &#946;-lactamases that is used as a therapeutic in conjunction with amoxicillin. Its industrial process of production involves bacterial growing in a batch process, while its purification is carried out mainly by process of liquid-liquid extraction with organic solvents and chromatographic steps. Thus, alternative methods like the purification employing two-phase aqueous micellar systems, which offer both hydrophobic and hydrophilic environments to solute species and allow selectivity in partitioning depending on the hydrophobicity of biomolecules, are of great concern. This work studied the feasibility of using two-phase aqueous mixed (nonionic/anionic) micellar systems formed by nonionic surfactant Triton X-114 and anionic surfactant AOT to extract clavulanic acid from broths fermented by Streptomyces clavuligerus in batch process. The stability of clavulanic acid at different values of pH, salts and their concentration, temperature and in the presence of different surfactants was investigated so as to limit the areas to be submitted to further studies. The cloud-point of the systems Triton X-114/Buffer and Triton X-114/AOT/Buffer was also determined under different conditions, and studies were performed on partitioning the biomolecule between the phases and the time needed to balance of the system. From these initial investigations the following levels of the variables were defined: concentration of AOT (0.50, 0.75, and 1.00 mM), Triton X-114 (1, 3 and 5% w/w), NaCl (0, 0.05 and 0.10 M) and temperature (24, 26 and 28°C), whose influences on the partition coefficient (KCA) and yield in the top phase (nCA) were investigated using factorial design. Statistical analysis and the mathematical model derived from the results allowed obtaining KCA&#8776; 1.65 e nCA&#8776; 71.58%. However, the statistical analysis using the response nCA indicated experimental conditions devoid of any physico-chemical meaning. In serial experiments performed with Triton X-114 3% w/w, Mcllvaine buffer at 6.5 pH and gradual addition of AOT, an increase in the concentration of anionic surfactant led to higher KCA and mass balance (BMCA&#8776; 85%). Thus, is possible conclude that the two-phase aqueous mixed micellar system provides low loss and partition to dilute phase, which is an advantage because it implies less problems in a subsequent step of purification.
15

Extração líquido-líquido de ácido clavulânico empregando sistemas micelares mistos de duas fases aquosas / Liquid-liquid extraction of clavulanic acid employing two-phase aqueous mixed micellar systems

Santos, Valéria de Carvalho 06 March 2009 (has links)
O ácido clavulânico é um potente inibidor de &#946;-lactamases utilizado como terapêutico em associação à amoxicilina. O processo industrial de obtenção envolve o cultivo bacteriano em processo descontínuo, enquanto que a sua purificação é realizada, principalmente, por processos de extração líquido-líquido com solventes orgânicos e etapas cromatográficas. Assim, métodos alternativos como a purificação empregando sistemas micelares de duas fases aquosas (SMDFA), os quais oferecem um ambiente hidrofóbico e hidrofílico que possibilita seletividade na partição de biomoléculas de acordo com sua hidrofobicidade, são de grande interesse. Neste trabalho estudou-se a viabilidade da utilização de sistema micelar misto (não-iônico/aniônico) de duas fases aquosas formados pelos tensoativos não-iônico Triton X-114 e aniônico AOT na extração do ácido clavulânico proveniente de cultivo submerso de Streptomyces clavuligerus em processo descontínuo. A estabilidade do ácido clavulânico em relação ao pH, sais e suas concentrações, temperatura e aos tensoativos foi investigada visando limitar as regiões a serem estudadas nas extrações. Determinou-se ainda o ponto névoa dos sistemas Triton X-114/Tampão e Triton X-114/AOT/Tampão em diferentes condições, bem como, estudos de migração da biomolécula para as fases e do tempo necessário para o equilíbrio do sistema. A partir destas investigações iniciais, foram definidos os níveis das variáveis: concentração de AOT (0,50, 0,75 e 1,00 mM), Triton X-114 (1, 3 e 5% m/m), NaCl (0, 0,05 e 0,10 M) e temperatura (24, 26 e 28°C), cujas influências sobre o coeficiente de partição (KAC) e recuperação da biomolécula na fase diluída (nAC) foram investigadas através de um planejamento fatorial. A análise estatística e o modelo matemático obtido a partir dos resultados para KAC revelou ser possível obterem-se KAC&#8776; 1,65 e nAC&#8776; 71,58%. No entanto, a análise estatística empregando nAC como resposta apontou condições experimentais desprovidas de significado físico-químico. Em experimentos seriados realizados com Triton X-114 3% m/m, Tampão Mcllavine pH 6,5 e adição gradual de AOT, um aumento da concentração deste tensoativo levou a maiores KAC e Balanço de massa (BMAC)&#8776; 85%. Desta forma é possível concluir que o sistema micelar misto de duas fases aquosas proporciona baixa perda da biomolécula e partição para a fase diluída, que é uma vantagem devido a menores problemas em uma etapa subsequente de purificação. / Clavulanic acid is a potent inhibitor of &#946;-lactamases that is used as a therapeutic in conjunction with amoxicillin. Its industrial process of production involves bacterial growing in a batch process, while its purification is carried out mainly by process of liquid-liquid extraction with organic solvents and chromatographic steps. Thus, alternative methods like the purification employing two-phase aqueous micellar systems, which offer both hydrophobic and hydrophilic environments to solute species and allow selectivity in partitioning depending on the hydrophobicity of biomolecules, are of great concern. This work studied the feasibility of using two-phase aqueous mixed (nonionic/anionic) micellar systems formed by nonionic surfactant Triton X-114 and anionic surfactant AOT to extract clavulanic acid from broths fermented by Streptomyces clavuligerus in batch process. The stability of clavulanic acid at different values of pH, salts and their concentration, temperature and in the presence of different surfactants was investigated so as to limit the areas to be submitted to further studies. The cloud-point of the systems Triton X-114/Buffer and Triton X-114/AOT/Buffer was also determined under different conditions, and studies were performed on partitioning the biomolecule between the phases and the time needed to balance of the system. From these initial investigations the following levels of the variables were defined: concentration of AOT (0.50, 0.75, and 1.00 mM), Triton X-114 (1, 3 and 5% w/w), NaCl (0, 0.05 and 0.10 M) and temperature (24, 26 and 28°C), whose influences on the partition coefficient (KCA) and yield in the top phase (nCA) were investigated using factorial design. Statistical analysis and the mathematical model derived from the results allowed obtaining KCA&#8776; 1.65 e nCA&#8776; 71.58%. However, the statistical analysis using the response nCA indicated experimental conditions devoid of any physico-chemical meaning. In serial experiments performed with Triton X-114 3% w/w, Mcllvaine buffer at 6.5 pH and gradual addition of AOT, an increase in the concentration of anionic surfactant led to higher KCA and mass balance (BMCA&#8776; 85%). Thus, is possible conclude that the two-phase aqueous mixed micellar system provides low loss and partition to dilute phase, which is an advantage because it implies less problems in a subsequent step of purification.
16

Condensation of refrigerants on small tube bundles

Mabrey, Burlin Davis 12 1900 (has links)
Approved for public release; distribution is unlimited / The construction of an apparatus for the condensation performance testing of a horizontal bundle of four tubes with various refrigerants was completed. The apparatus was instrumented, and data reduction software was developed to provide bundle and single tube condensation data. Two tube bundles were tested, smooth copper tubes and low integral-fin copper-nickel tubes, with two refrigerants, R-114 and R-113. An enhancement ratio of about 2.0 for the overall heat transfer coefficient was demonstrated for the finned tubes over the smooth tubes. Internal contamination, possibly due to a breakdown of the refrigerant molecules when subjected to high temperatures in the boiling chamber, inhibited further meaningful data collection. Recommendations for improvement of the test apparatus are made. / http://archive.org/details/condensationofre00mabr / Lieutenant, United States Navy
17

Crystallographic Analysis and Kinetic Studies of HIV-1 Protease and Drug-Resistant Mutants

Tie, Yunfeng 12 June 2006 (has links)
HIV-1 protease is the most effective target for drugs to treat AIDS, however, the long-term therapeutic efficiency is restricted by the rapid development of drug resistant variants. To better understand the molecular basis of drug resistance, crystallographic and kinetic studies were applied to wild-type HIV-1 protease (PR) and drug-resistant mutants, PRV82A, and PRI84V, in complex with substrate analogues, the current drug saquinavir and the new inhibitor UIC-94017 (TMC-114). UIC-94017 was also studied with mutants PRD30N and PRI50V. The drug-resistant mutations V82A, I84V, D30N and I50V participate in substrate binding. Eighteen crystal structures were refined at resolutions of 0.97-1.60A. The high accuracy of the atomic resolution crystal structures helps understand the reaction mechanism of HIV-1 PR. Different binding modes are observed for different types of inhibitors. The substrate analogs have more extended interactions with PR subsites up to S5-S5', while the clinical inhibitors maximize the contacts within S2-S2'. Hydrophobic interactions are the major force for saquinavir binding since it was designed with enhanced hydrophobic groups based on substrate side-chains. In contrast, the new clinical inhibitor UIC-94017 was designed to mimic the hydrogen bonds between substrates and PR. UIC-94017 forms polar interactions with the PR main-chain atoms of Asp29/30, which have been proposed to be critical for its potency against resistant HIV. The mutants showed different structural and kinetic effects, depending on the inhibitor and location of the mutations. The observed structural changes were consistent with the relative inhibition data. Both PRI84V and PRI50V lost favorable hydrophobic interactions with inhibitor compared with PR. Similarly, in PRD30N the UIC-94017 had a water-mediated interaction with the side-chain of Asn30 rather than the direct interaction observed in PR. However, PRV82A compensated for the mutation by shifts of the backbone of Ala82. Furthermore, the complexes of PRV82A showed smaller shifts relative to PR, but more movement of the peptide analog, compared to complexes with clinical inhibitors. The structures suggest that substrate analogs have more flexibility than the drugs to accommodate the structural changes caused by mutation, which may explain how HIV can develop drug resistance while retaining the ability of PR to hydrolyze natural substrates.
18

La conception phénoménologique de l'espace / Phenomenological Conception of Space / Fenomenologické pojetí prostoru

Luhanová, Eliška 19 May 2016 (has links)
La thèse se préoccupe de la nature d’expérience que le moi percevant fait avec les autres étants et des conditions qui rendent leur rencontre possible. L’attention est centrée sur le rôle de la spatialité qui représente un caractère distinctif des étants sensibles corporels. La thèse s’inscrit dans le courant de la philosophie néo-phénoménologique. Dans les paragraphes d’introduction, les directives méthodiques de l’approche phénoménologique sont formulées, ainsi que la spécificité de la néophénoménologie,caractérisée comme une pensée qui se distancie de l’égocentrisme dominant la phénoménologie classique, notamment husserlienne. L’exposé part de l’esquisse d’une théorie phénoménologique de la perception (chap. I) et saisit les caractéristiques ontologiques élémentaires des étants donnés (chap. II). Le chapitre suivant traite brièvement les questions concernant la nature du champ phénoménal, caractérisé comme structure de donations possibles des étants (chap. III). Les chapitres suivants décrivent le mode spatial de l’être des étants qui se donnent au moi (chap. IV) et la spatialité propre au moi qui fait expérience (chap. V). L’attention est portée notamment à la liaison essentielle entre l’étant et son contexte ; ce motif est suivi jusqu’à l’insertion de l’étant dans le tout spatial du monde. Quant à la spatialité du moi, son corps est caractérisé comme un corps percevant et perçu,donné du dedans et du dehors à la fois. Le rôle des différences spatiales pour la constitution et la distinction de l’expérience du moi et des autres étants est élucidé. Le chapitre final montre que la spatialité du monde partagé implique aussi les autres moi possibles, ce qui fonde la valeur intersubjective de l’expérience sensible (chap. VI). / Phenomenological Conception of Space. The thesis focuses on the nature of experience which a perceiving self has with other beings and on the conditions which make such an encounter possible. It emphasises the role of the spatiality, which is seen as a defining characteristic of corporeal sensible beings. Broadly speaking, the work belongs to post-phenomenological philosophy. The Introduction summarises the main methodological principles of a phenomenological approach and presents post-phenomenology as a specific discourse which rejects the egocentrism typical of classical, especially Husserlian phenomenology. The exposition proper starts with an outline of a phenomenological theory of perception (Chapter I) and continues by offering an outline of the basic ontological characteristics of sensibly given entities, especially of their trans-empirical nature (Chapter II). The following chapter briefly treats some issues related to the nature of a phenomenal field, which is described as a structure of possible ways in which beings can manifest themselves (Chapter III). The subsequent chapters form the main core of the thesis. They deal with the spatial manner of being of entities which manifest themselves (Chapter IV) and of the self which experiences them (Chapter V). The main emphasis is on the essential bond which connects the given entities with their context,whereby this idea is generalised to the level of situating them within the spatial unity of the world. Regarding the spatiality of self, the main focusis on investigating the bipolar nature of one’s own body as bothperceiving and perceived, an entity which manifests itself internally andexternally, and the role of spatial distinctions in the formation and differentiation of the experience which a self has with itself and withother beings. The concluding chapter implies that a possible other self may be an integral part of the spatially differentiated shared world, thus establishing an intersubjective validity of sensory experience (Chapter V). / Předkládaná práce se zabývá povahou zkušenosti, kterou vnímající já činís jinými jsoucny, a podmínkami, za jakých je takové setkávání možné.Vyzdvihuje přitom zejména roli prostorovosti, která je určujícím znakemtělesných smyslových jsoucen. Práce se řadí do proudu postfenomenologickéfilosofie. V úvodní části jsou vystižena hlavnímetodologická vodítka fenomenologického přístupu a zároveň jeodstíněna post-fenomenologie jako typ myšlení, které se odklání odegocentrismu typického pro klasickou, zejm. husserlovskoufenomenologii. Vlastní výklad vychází od náčrtu fenomenologické teoriesmyslového vnímání (kap. I) a pokračuje vystižením základníchontologických charakteristik smyslově daných jsoucen, zejména jejichtransempirické povahy (kap. II). V následující kapitole se výklad krátcedotýká otázek spojených s povahou fenomenálního pole, jejžcharakterizuje jako strukturu možných daností jsoucen (kap. III). Následujíkapitoly, které tvoří vlastní jádro práce a týkají se prostorového způsobubytí dávajících se jsoucen (kap. IV) a já, jež činí se jsoucny zkušenost (kap.V). Podtržena je zejména bytostná vazba jsoucna na kontext, přičemžúvaha je vedena až k zasazení jsoucna do prostorového celku světa.V případě prostorovosti já je rozvíjena zejména dvojpólovost vlastníhotěla jako vnímajícího i vnímaného, daného zevnitř i zvenčí, a roleprostorových diferencí pro utváření a rozlišení zkušenosti já se sebousamým a s jinými jsoucny. Závěrečná kapitola naznačuje, žek prostorovosti sdíleného světa patří i možná druhá já, což zakládámožnost intersubjektivní platnosti zkušenosti (kap. VI).Klíčová slova: fenomenologie, ontologie, prostor, prostorovost, MauriceMerleau-Ponty, Jan Patočka.
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An ontology of space : methodological recursiveness and the diagram

Cachao, Rita January 2015 (has links)
Current debates on space reveal a dichotomy between two apparently conflicting understandings of space: on the one hand, space is understood as a physical, tangible entity that has an impact on how we perceive, feel and emotionally inhabit the world, and on the other hand, space is conceived as an abstract entity, suggesting that space has no active role (a productivity) within everyday life, being solely a conceptual product of intellectual reasoning. As a result, the commonly used word: ‘space’, will be discussed as an ontologically paradoxical, ambiguous and elusive concept; a concept that cannot be captured within a single definition. This thesis consequently researches the ontology of space by informing a framework that embraces the complexity of space as an ambiguous and unrepresentable entity. It aims to reconcile the multiple understandings of space, liberating it from the binary thinking that opposes the abstract to the physical, disclosing its potential productivity. This thesis thus proposes a methodology departing from a transdisciplinary approach that addresses the variability, multiplicity, paradoxicality and ambiguity of space through a ‘bastard’ epistemology that defies binary logic by considering what falls out of order and norm. To research an ontology through a bastard epistemology is to work outside of (but in combination with) the intelligible and sensible realms, through a framework that is non-representational, but instead enactive and performative, driven by experience, affect and aesthetics; thus allowing access to an entity that is both ambiguous and also unrepresentable. In doing so, this thesis argues that space is diversely implicated in the constitution of research methodologies through its interactions with order and structures, as well as agential in the constitution of understandings of human interactions with the world; and therefore, it will be argued, space has methodological purchase. The consequence of this methodological purchase is that space can reveal itself if a research strategy is implemented that works through the multiple dimensions of space. Within this context the diagram will be introduced as a productive path because enables a bastard epistemology to work through the multiplicity of space, since the diagram, is a performed, materialised outcome of multiple experiences of the making of order through the interaction between physical and conceptual dimensions. In synthesis, the diagram is used to recursively research an ontology of space, showing the main contribution of this thesis: of how without negating its complexity and multiplicity, space can be useful, constructive and productive within contemporary contexts of research methodologies.
20

Determina??o de CD, PB, e TL em ?gua produzida por HR-CS GF AAS ap?s extra??o em ponto nuvem / Determination of Cd, Pb, and Tl produced water by HR-CS GF AAS after extraction point in cloud

Bezerra, Breno Gustavo Porf?rio 03 November 2014 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-01-26T17:52:57Z No. of bitstreams: 1 BrenoGustavoPorfirioBezerra_DISSERT.pdf: 1680172 bytes, checksum: 0f4f20935e8e24b12e505645455bea08 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-01-28T19:06:56Z (GMT) No. of bitstreams: 1 BrenoGustavoPorfirioBezerra_DISSERT.pdf: 1680172 bytes, checksum: 0f4f20935e8e24b12e505645455bea08 (MD5) / Made available in DSpace on 2016-01-28T19:06:56Z (GMT). No. of bitstreams: 1 BrenoGustavoPorfirioBezerra_DISSERT.pdf: 1680172 bytes, checksum: 0f4f20935e8e24b12e505645455bea08 (MD5) Previous issue date: 2014-11-03 / A ?gua produzida representa um grande problema associado com a atividade de extra??o de ?leo bruto. O monitoramento dos n?veis de metais nos res?duos ? constante e requer a utiliza??o de t?cnicas anal?ticas sens?veis. No entanto, a determina??o de elementos tra?o muitas vezes pode exigir uma etapa de pr?-concentra??o. O objetivo deste trabalho foi desenvolver um m?todo anal?tico simples e r?pido para a extra??o e pr?-concentra??o baseada no fen?meno de extra??o no ponto nuvem para a determina??o do Cd, Pb e Tl em ?gua produzida amostras por Espectrometria de Absor??o de alta resolu??o com fonte continua e atomiza??o em forno de grafite. Um planejamento Box Behnken foi usado para obter a condi??o ideal de extra??o dos analitos. Os fatores avaliados foram: concentra??o do agente complexante (o,odietilditilfosfato am?nio, DDTP), a concentra??o do ?cido clor?drico e concentra??o do surfactante (Triton X -114). A condi??o ideal de extra??o foi obtida com: 0,6% m v -1 DDTP, HCl 0,3 mol L-1 e 0,2% m v -1 de Triton X - 114 para o Pb; 0,7% m v -1 DDTP, HCl 0,8 mol L-1 e 0,2% m v -1 Triton X-114 para Cd. Para o Tl foi evidenciado que melhor condi??o de extra??o se d? com aus?ncia de DDTP, as condi??es de extra??o foram ent?o HCl 1,0 mol L-1 e 1,0% m v -1 de Triton X - 114. Os limites de detec??o para o m?todo proposto, foram 0,02 ?g L-1 , 0,004 ?g L-1 e 0,06 ?g L-1 para o Pb, Cd e Tl, respectivamente. Os fatores de enriquecimento foram superiores a 10 vezes. O m?todo foi aplicado para a ?gua produzida da bacia Potiguar, e testes de adi??o e recupera??o foram realizados, e valores ficaram entre 81% e 120%. A precis?o foi expressa com desvio padr?o relativo (RSD) foi inferior a 5% / Produced water is a major problem associated with the crude oil extraction activity. The monitoring of the levels of metals in the waste is constant and requires the use of sensitive analytical techniques. However, the determination of trace elements can often require a pre-concentration step. The objective of this study was to develop a simple and rapid analytical method for the extraction and pre-concentration based on extraction phenomenon cloud point for the determination of Cd, Pb and Tl in produced water samples by spectrometry of high resolution Absorption source continues and atomization graphite furnace. The Box Behnken design was used to obtain the optimal condition of extraction of analytes. The factors were evaluated: concentration of complexing agent (o,o-dietilditilfosfato ammonium, DDTP), the concentration of hydrochloric acid and concentration of surfactant (Triton X -114). The optimal condition obtained through extraction was: 0,6% m v-1 DDTP, HCl 0,3 mol L-1 and 0,2% m v-1 of Triton X - 114 for Pb; 0,7% m v-1 DDTP, HCl 0,8 mol L-1 and 0,2% m v-1 Triton X-114 for Cd. For Tl was evidenced that best extraction condition occurs with no DDTP, the extraction conditions were HCl 1,0 mol L-1 e 1,0% m v-1 de Triton X - 114. The limits of detection for the proposed method were 0,005 ?g L-1 , 0,03 ?g L-1 and 0,09 ?g L-1 to Cd, Pb and Tl, Respectively. Enrichment factors Were greater than 10 times. The method was applied to the water produced in the Potiguar basin, and addition and recovery tests were performed, and values were between 81% and 120%. The precision was expressed with relative standard deviation (RSD) is less than 5%

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