794 resultados para Hyper-flute


Relevância:

10.00% 10.00%

Publicador:

Resumo:

Currently, carotenoids are valuable bioactive molecules for several industries, such as chemical, pharmaceutical, food and cosmetics, due to their multiple benefits as natural colorants, antioxidants and vitamin precursors. Hence, the increasing interest on these high added-value products has led to the search of alternatives, more cost-effective and with better yields, towards their industrial production. Indeed, microbial metabolism offers a promising option for carotenoids production. Herein it is shown the potential of the dibenzothiophene desulfurizing bacterium Gordonia alkanivorans strain 1B as a high carotenoid-producer microorganism. The novel carotenoids, produced under different culture conditions, were extracted with DMSO and then further analyzed both through spectrophotometry and HPLC. When grown in glucose-sulfate-light, strain 1B was able of achieving 2015 g carotenoids per g DCW in shake-flask assays, with about 60% corresponding to lutein, canthaxanthin and astaxanthin. Further optimization studies open a new focus of research aiming to get a hyper pigment-producer strain that may be applied towards different industrial sectors.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Tendo em conta um enfoque comunicativo experiencial (Fernández- Corbacho, 2014) e uma pedagogia crítica emancipatória (Jiménez Raya, Lamb & Vieira, 2007), enriquecida por enfoques multissensoriais (Arslan, 2009), é nossa intenção, com este projeto, contribuir para a implementação de práticas que espelhem as variedades linguísticas e culturais da Hispanoamérica (Liceras, 1995; Beave, 2000) na aula de espanhol como língua estrangeira no ensino secundário português. Neste estudo, através duma perspetiva metodológica de índole qualitativa, pretendemos, como ponto de partida, analisar: a) as representações de alunos portugueses sobre o lugar da Hispanoamérica no processo de ensino-aprendizagem de espanhol como língua estrangeira (Altmann & Vences, 2004; Pérez, 2003), através de inquéritos por questionário; e, ainda, b) as abordagens das variedades linguísticas e culturais do espanhol, que surgem nos manuais utilizados no ensino secundário português. Por outro lado, através de um estudo de caso (Benson, Chik, Gao, Huang & Wang, 2009), procurámos evidenciar uma mostra de possíveis boas práticas didático-pedagógicas e materiais, com vista a um trabalho sistemático e próativo com as variedades linguísticas e culturais do espanhol, baseado numa (hiper)pedagogia crítica e encarando a língua enquanto objeto manipulável e potenciador de cidadãos verdadeiramente conscientes do mundo. Para tal, criámos materiais físicos e digitais, que foram posteriormente implementados com alunos do 11º ano de escolaridade, no nível de iniciação de espanhol, num agrupamento de escolas da região de Aveiro. Os resultados mostram que práticas e materiais desta natureza poderão favorecer aprendizagens comunicativas experienciais, quanto à criação de futuros cidadãos críticos e ativos, fomentando o desenvolvimento das suas competências comunicativa plurilingue e pluricultural e duma consciência cultural crítica (Byram, Gribkova & Starkey, 2002) dos alunos, no contexto de ensino-aprendizagem do ensino secundário.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The purpose of this dissertation is to produce a new Harmonie arrangement of Mozart’s Die Zauberflöte suitable for modern performance, bringing Joseph Heidenreich’s 1782 arrangement—one of the great treasures of the wind repertoire—to life for future performers and audiences. I took advantage of the capabilities of modern wind instruments and performance techniques, and employed other instruments normally found in the modern wind ensemble to create a work in the tradition of Heidenreich’s that restored as much of Mozart’s original thinking as possible. I expanded the Harmonie band to include flute and string bass. Other instruments provide special effects, a traditional role for wind instruments in the Classical opera orchestra. This arrangement is conceived to be performed with the original vocal soloists, making it a viable option for concert performance or for smaller staged productions. It is also intended to allow the wind players to be onstage with the singers, becoming part of the dramatic action while simultaneously serving as the “opera orchestra.” This allows creative staging possibilities, and offers the wind players an opportunity to explore new aspects of performing. My arrangement also restores Mozart’s music to its original keys and retains much of his original wind scoring. This arrangement expands the possibilities for collaboration between opera studios, voice departments or community opera companies and wind ensembles. A suite for winds without voices (currently in production) will allow conductors to program this major work from the Classical era without dedicating a concert program to the complete opera. Excerpted arias and duets from this arrangement provide vocalists the option of using chamber wind accompaniment on recitals. The door is now open to arrangements of other operas by composers such as Mozart, Rossini and Weber, adding new repertoire for chamber winds and bringing great music to life in a new way.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Tese de Doutoramento, Biologia (Ecologia Vegetal), 25 de Junho de 2013, Universidade dos Açores.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Em invertebrados eurialinos, a exposição a metais pode induzir distúrbios respiratórios, iônicos e osmóticos, bem como estresse oxidativo. Diversos estudos sobre o efeito combinado da salinidade da água e a exposição a metais em invertebrados estuarinos estão relatados na literatura, porém a maioria destes estudos estão focados em apenas alguns metais como Cd, Cu, Pb e Zn. Entretanto, poucos estudos avaliaram as respostas bioquímicas e fisiológicas de invertebrados eurialinos à exposição ao Ni em diferentes salinidades. No presente estudo, o caranguejo estuarino Neohelice granulata foi mantido sob condições controle (sem adição de Ni na água) ou exposto (96 h) a concentrações subletais de Ni (100 e 1000 µg/L) em duas salinidades (2 e 30). Após exposição, o consumo de oxigênio corporal foi medido e amostras de tecidos (hemolinfa, hepatopâncreas, músculo, e brânquias anteriores e posteriores) foram coletadas para análises posteriores. A concentração osmótica e a composição iônica (Na+ , Cl- , Ca2+, Mg2+ e K+ ) foram determinadas nas amostras de hemolinfa. A atividade da lactato desidrogenase (LDH) foi medida na hemolinfa, hepatopâncreas e músculo, enquanto a peroxidação lipídica (LPO) foi analisada no hepatopâncreas, músculo e brânquias (anteriores e posteriores). Os caranguejos controle não apresentaram diferença na concentração osmótica em função da salinidade, porém aqueles aclimatados à salinidade 2 apresentaram menores concentrações hemolinfáticas de Na+ , K + e Mg2+, bem como maiores níveis de LPO nas brânquias (anteriores e posteriores) e hepatopâncreas do que aqueles aclimatados à salinidade 30. O consumo de oxigênio corporal e a atividade tecidual da LDH foram semelhantes nos caranguejos controles aclimatados a 2 e 30. Estes resultados indicam que, após duas semanas de manutenção em laboratório, N. granulata apresenta ajustes fisiológicos da concentração osmótica (2‰: hiper-regulação; 30‰: hipo-regulação), composição iônica hemolinfática e taxas 4 metabólicas (aeróbica e anaeróbica) em função da salinidade, com conseqüente maior dano oxidativo em lipídios durante a hiper-regulação em baixa salinidade. Quanto à exposição ao Ni, houve aumento do consumo de oxigênio corporal, da atividade da LDH hemolinfática e da concentração hemolinfática de K+ na salinidade 2. Na salinidade 30 foi observado um aumento da atividade da LDH hemolinfática, da concentração osmótica e de Cl- hemolinfática, bem como uma diminuição das concentrações hemolinfáticas de K+ e Mg2+. Nos caranguejos aclimatados à salinidade 2, os efeitos do Ni parecem estar associados a distúrbios metabólicos (aeróbico e anaeróbico), enquanto distúrbios osmóticos e ionoregulatórios foram mais evidentes nos caranguejos aclimatados e expostos ao Ni na salinidade 30.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

This text is taken from the postgraduate thesis, which one of the authors (A.B.) developed for the degree of Medical Physicist in the School on Medical Physics of the University of Florence. The text explores the feasibility of quantitative Magnetic Resonance Spectroscopy as a tool for daily clinical routine use. The results and analysis comes from two types of hyper spectral images: the first set are hyper spectral images coming from a standard phantom (reference images); and hyper spectral images obtained from a group of patients who have undergone MRI examinations at the Santa Maria Nuova Hospital. This interdisciplinary work stems from the IFAC-CNR know how in terms of data analysis and nanomedicine, and the clinical expertise of Radiologists and Medical Physicists. The results reported here, which were the subject of the thesis, are original, unpublished, and represent independent work.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Dissertação de Mestrado apresentada no Instituto Superior de Psicologia Aplicada para obtenção de grau de Mestre na especialidade de Psicologia Clínica

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Dissertação (mestrado)—Universidade de Brasília, Faculdade UnB Gama, Programa de Pós-graduação em Integridade de Materiais da Engenharia, 2015.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Cette thèse présente une théorie de la fonction formelle et de la structure des phrases dans la musique contemporaine, théorie qui peut être utilisée aussi bien comme outil analytique que pour créer de nouvelles œuvres. Deux concepts théoriques actuels aident à clarifier la structure des phrases : les projections temporelles de Christopher Hasty et la théorie des fonctions formelles de William Caplin, qui inclut le concept de l’organisation formelle soudée versus lâche (tight-knit vs. loose). Les projections temporelles sont perceptibles grâce à l’accent mis sur les paramètres secondaires, comme le style du jeu, l’articulation et le timbre. Des sections avec une organisation formelle soudée ont des projections temporelles claires, qui sont créées par la juxtaposition des motifs distincts, généralement sous la forme d'une idée de base en deux parties. Ces projections organisent la musique en phrases de présentation, en phrases de continuité et finalement, à des moments formels charnières, en phrases cadentielles. Les sections pourvues d’une organisation plus lâche tendent à présenter des projections et mouvements harmoniques moins clairs et moins d’uniformité motivique. La structure des phrases de trois pièces tardives pour instrument soliste de Pierre Boulez est analysée : Anthèmes I pour violon (1991-1992) et deux pièces pour piano, Incises (2001) et une page d’éphéméride (2005). Les idées proposées dans le présent document font suite à une analyse de ces œuvres et ont eu une forte influence sur mes propres compositions, en particulier Lucretia Overture pour orchestre et 4 Impromptus pour flûte, saxophone soprano et piano, qui sont également analysés en détail. Plusieurs techniques de composition supplémentaires peuvent être discernés dans ces deux œuvres, y compris l'utilisation de séquence mélodiques pour contrôler le rythme harmonique; des passages composés de plusieurs couches musicales chacun avec un structure de phrase distinct; et le relâchement de l'organisation formelle de matériels récurrents. Enfin, la composition de plusieurs autres travaux antérieurs a donné lieu à des techniques utilisées dans ces deux œuvres et ils sont brièvement abordés dans la section finale.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

We compute how bulk loops renormalize both bulk and brane effective interactions for codimension-two branes in 6D gauged chiral supergravity, as functions of the brane tension and brane-localized flux. We do so by explicitly integrating out hyper- and gauge-multiplets in 6D gauged chiral supergravity compactified to 4D on a flux-stabilized 2D rugby-ball geometry, specializing the results of a companion paper, arXiv:1210.3753 , to the supersymmetric case. While the brane back-reaction generically breaks supersymmetry, we show that the bulk supersymmetry can be preserved if the amount of brane- localized flux is related in a specific BPS-like way to the brane tension, and verify that the loop corrections to the brane curvature vanish in this special case. In these systems it is the brane-bulk couplings that fix the size of the extra dimensions, and we show that in some circumstances the bulk geometry dynamically adjusts to ensure the supersymmetric BPS-like condition is automatically satisfied. We investigate the robustness of this residual supersymmetry to loops of non-supersymmetric matter on the branes, and show that supersymmetry- breaking effects can enter only through effective brane-bulk interactions involving at least two derivatives. We comment on the relevance of this calculation to proposed applications of codimension-two 6D models to solutions of the hierarchy and cosmological constant problems. © 2013 SISSA.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

O presente trabalho é uma abordagem teórica e interpretativa à música para traverso de António Rodil (c.1730-1787), Pedro Avondano (1714-1782) e dos irmãos Pla. A interação entre as duas componentes do discurso são fundamentos essenciais para uma global compreensão das obras, sendo por sua vez, foco central no tratamento do estilo galante ibérico. A dissertação esta dividida em 5 capítulos; 1. contextualização da prática musical em Portugal na segunda metade do séc. XVIII; 2. o percurso artístico do flautista António Rodil (c.1730-1787); 3. a música de câmara de Pedro Avondano (1714-1782) e a primeira obra conhecida para o traverso em Portugal A Collection ofLisbon Minuets for two Violins or two German flutes and bass (1766); 4. o traverso na obra dos irmãos PLA; 5. reflexões em torno das questões interpretativas.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

La littérature suggère que le sommeil paradoxal joue un rôle dans l'intégration associative de la mémoire émotionnelle. De plus, les rêves en sommeil paradoxal, en particulier leur nature bizarre et émotionnelle, semblent refléter cette fonction associative et émotionnelle du sommeil paradoxal. La conséquence des cauchemars fréquents sur ce processus est inconnue, bien que le réveil provoqué par un cauchemar semble interférer avec les fonctions du sommeil paradoxal. Le premier objectif de cette thèse était de reproduire conceptuellement des recherches antérieures démontrant que le sommeil paradoxal permet un accès hyper-associatif à la mémoire. L'utilisation d'une sieste diurne nous a permis d'évaluer les effets du sommeil paradoxal, comparativement au sommeil lent et à l’éveil, sur la performance des participants à une tâche sémantique mesurant « associational breadth » (AB). Les résultats ont montré que seuls les sujets réveillés en sommeil paradoxal ont répondu avec des associations atypiques, ce qui suggère que le sommeil paradoxal est spécifique dans sa capacité à intégrer les traces de la mémoire émotionnelle (article 1). En outre, les rapports de rêve en sommeil paradoxal étaient plus bizarres que ceux en sommeil lent, et plus intenses émotionnellement ; ces attributs semblent refléter la nature associative et émotionnelle du sommeil paradoxal (article 2). Le deuxième objectif de la thèse était de préciser si et comment le traitement de la mémoire émotionnelle en sommeil paradoxal est altéré dans le Trouble de cauchemars fréquents (NM). En utilisant le même protocole, nos résultats ont montré que les participants NM avaient des résultats plus élevés avant une sieste, ce qui correspond aux observations antérieures voulant que les personnes souffrant de cauchemars soient plus créatives. Après le sommeil paradoxal, les deux groupes, NM et CTL, ont montré des changements similaires dans leur accès associatif, avec des résultats AB-négatif plus bas et AB-positif plus grands. Une semaine plus tard, seul les participants NM a maintenu ce changement dans leur réseau sémantique (article 3). Ces résultats suggèrent qu’au fil du temps, les cauchemars peuvent interférer avec l'intégration de la mémoire émotionnelle pendant le sommeil paradoxal. En ce qui concerne l'imagerie, les participants NM avaient plus de bizarrerie et plus d’émotion positive, mais pas négative, dans leurs rêveries (article 4). Ces attributs intensifiés suggèrent à nouveau que les participants NM sont plus imaginatifs et créatifs à l’éveil. Dans l'ensemble, les résultats confirment le rôle du sommeil paradoxal dans l'intégration associative de la mémoire émotionnelle. Cependant, nos résultats concernant le Trouble de cauchemars ne sont pas entièrement en accord avec les théories suggérant que les cauchemars sont dysfonctionnels. Le groupe NM a montré plus d’associativité émotionnelle, de même que plus d'imagerie positive et bizarre à l’éveil. Nous proposons donc une nouvelle théorie de sensibilité environnementale associée au Trouble de cauchemar, suggérant qu'une sensibilité accrue à une gamme de contextes environnementaux sous-tendrait les symptômes uniques et la richesse imaginative observés chez les personnes souffrant de cauchemars fréquents. Bien que davantage de recherches doivent être faites, il est possible que ces personnes puissent bénéficier e milieux favorables, et qu’elles puissent avoir un avantage adaptatif à l'égard de l'expression créative, ce qui est particulièrement pertinent lorsque l'on considère leur pronostic et les différents types de traitements.

Relevância:

10.00% 10.00%

Publicador:

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Both low and high blood pressure (BP) during the acute phase of stroke are associated independently with a poor outcome. Several small clinical trials have involved the alteration of BP and this study assessed the relationship between change in BP and functional outcome. Randomised controlled trials of interventions that would be expected, on pharmacological grounds, to alter BP in patients within one week of the onset of acute ischaemic or haemorrhagic stroke were sought using electronic searches. Data were collected on BP and clinical outcome. The relationship between the difference in on-treatment BP and odds ratios (OR) for outcomes was assessed using meta-regression. Thirty-seven trials involving 9,008 patients were included. A ‘U’ or ‘J’ shaped relationship were found between on-treatment BP difference and early death, death at the end of 90 day follow up, and combined death or dependency at the end of follow up. Although outcomes were not significantly reduced at any level of change in BP, the lowest odds occurred at: early death (OR 0.87, 95% confidence interval, CI 0.54 to 1.23) - 8.1 mmHg; death at end of follow up (OR 0.96, 95% CI 0.31 to 1.65) - 14.4 mmHg; and combined death or dependency at end of follow up (OR 0.95, 95% CI 0.11 to 1.72) - 14.6 mmHg. Although large falls or increases in BP are associated with a worse outcome, modest reductions may reduce death, and combined death or dependency, although the confidence intervals are wide and compatible with overall benefit or hazard.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The call to access and preserve the state records that document crimes committed by the state during Guatemala’s civil war has become an archival imperative entangled with neoliberal human rights discourses of “truth, justice, and memory.” 200,000 people were killed and disappeared in Guatemala’s civil war including acts of genocide in which 85% of massacres involved sexual violence committed against Mayan women. This dissertation argues that in an attempt to tell the official story of the civil war, American Human Rights organizations and academic institutions have constructed a normative identity whose humanity is attached to a scientific and evidentiary value as well as an archival status representing the materiality and institutionality of the record. Consequently, Human Rights discourses grounded in Western knowledges, in particular archival science and law, which prioritize the appearance of truth erase the material and epistemological experience of indigenous women during wartimes. As a result, the subjectivity that has surfaced on the record as most legible has mostly pertained to non-indigenous, middle class, urban, leftist men who were victims of enforced disappearance not genocide. This dissertation investigates this conflicting narrative that remembers a non-indigenous revolutionary masculine hero and grants him justice in human rights courtrooms simply because of a document attesting to his death. A main research question addressed in this project is why the promise of "truth and justice" under the name of human rights becomes a contentious site for gendered indigenous bodies? I conduct a discursive and rhetorical analysis of documentary film, declassified Guatemalan police and military records such as Operation Sofia, a military log known for “documenting the genocide” during rural counterinsurgencies executed by the military. I interrogate the ways in which racialized feminicides or the hyper-sexualized racial violence that has historically dehumanized indigenous women falls outside of discourses of vision constructed by Western positivist knowledges to reinscribe the ideal human right subject. I argue for alternative epistemological frames that recognize genocide as sexualized and gendered structures that have simultaneously produced racialized feminicides in order to disrupt the colonial structures of capitalism, patriarchy and heterosexuality. Ironically, these structures of power remain untouched by the dominant human rights discourse and its academic, NGO, and state collaborators that seek "truth and justice" in post-conflict Guatemala.