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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.
71

Influência da desinfecção química e do tempo de armazenagem sobre as propriedades físicas das próteses oculares /

Moreno, Amália. January 2011 (has links)
Orientador: Marcelo Coelho Goiato / Coorientador: Daniela Micheline dos Santos / Banca: Simone Cecílio Hallak Regalo / Banca: Stefan Fiuza Carvalho Dekon / Resumo: As próteses oculares são responsáveis pela recuperação da estética e auto-estima do usuário. Assim, os materiais utilizados na confecção de prótese ocular devem possuir propriedades específicas para sua indicação e durabilidade. Desse modo, é importante avaliar o comportamento destes materiais quando influenciados por diversas soluções desinfetantes. Este estudo teve como objetivo avaliar a microdureza, rugosidade superficial e alteração de cor de próteses oculares sobre a influência da desinfecção química e armazenagem. Foram confeccionadas 50 amostras simulando próteses oculares contendo duas resinas acrílicas (N1 e incolor), distribuídas em cinco grupos de acordo com o desinfetante utilizado: sabão neutro (I), opti-free (II), efferdent (III), hipoclorito a 1% (IV) e clorexidina a 4% (V). As amostras foram armazenadas por 120 dias, sendo desinfetadas durante este período. As leituras de microdureza, rugosidade e cor das amostras foram realizadas em um período inicial (B) e após 60 (T1) e 120 (T2) dias de armazenagem com desinfecção. A microdureza foi mensurada por meio de um microdurômetro, e a rugosidade determinada por um rugosímetro. A leitura de cor foi realizada por meio da espectrofotometria de reflexão, usando o sistema CIE L*a*b*. A alteração de cor (ΔE) foi calculada para os períodos entre T1 e B (T1B), e T2 e B (T2B). Pelos resultados obtidos a resina N1 para esclera apresentou menor microdureza estatisticamente significante, comparada a resina incolor (P<0,05). A maior alteração dos valores de microdureza e rugosidade foi obtida para os grupos IV e V. Ambos os períodos de desinfecção e armazenagem produziram alterações significativas (P<0,05) nas amostras com diminuição dos valores de... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Ocular prostheses are responsible to restore not only patient's aesthetic but also its self-esteem. The materials used to fabricate the ocular prostheses should present specific properties regarding its indication and durability. Therefore, it is important to investigate the physical behavior of such materials when subjected to different disinfectant solutions. This study evaluated the microhardness, surface roughness and color stability of ocular prostheses under the influence of different chemical disinfectant solutions and storage. A total of 50 samples simulating an ocular prosthesis containing two acrylic resins (N1 and colorless) were fabricated. They were divided into five groups as a function of disinfectant solution: neutral soap (I), opti-free (II), efferdent (III), 1% hypochlorite (IV) and 4% chlorhexidine (V). Samples were storage during 120 days, and they were disinfected throughout the period. Microhardness, roughness and color measurements were performed at baseline (B), after 60 (T1) and 120 (T2) days of storage with disinfection. The microharness and the roughness measurements were evaluated using a microdurometer and a roughness meter, respectively. Samples colors were measured with spectrophotometer using CIE L*a*b* system. Color differences (ΔE*) were calculated for periods between T1 and B (T1B), and T2 and B (T2B). The N1 acrylic resin exhibited statistically lower microhardness when compared to the colorless acrylic resin (P<0.05). The highest microhardness and roughness alterations were observed for groups IV and V. Both disinfection and storage periods statistically reduced the microhadness values and increased the roughness values of the samples (P<0.05). Color alteration was... (Complete abstract click electronic access below) / Mestre
72

Epidemiologia e estudo dos fatores responsáveis pela espongiose ocular no município de Araguatins -TO / Epidemiology and study of the factors responsible for spongiosis ocular in the city of Araguatins TO

Silvio Carneiro da Cunha Filho 24 November 2010 (has links)
Em outubro de 2005 a notificação de 17 casos de doença ocular de etiologia desconhecida, envolvendo, em sua maioria, a população infantil da cidade de Araguatins/TO, levou as autoridades locais a pedirem ajuda a Secretaria de Estado da Saúde do Estado do Tocantins no intuito de descobrirem sua etiologia, tratamento e prevenção. Nos pacientes acometidos, os sinais freqüentemente observados foram: intensa hiperemia conjutival, granuloma, episclerite, infiltrado corneano periférico. Na anamnese realizada nos pacientes foi observado que todos tiveram contato com as águas do Rio Araguaia. Os resultados obtidos a partir do processamento das amostras de água, sedimentos e substratos particularmente na vegetação marginal inundada, permitiram confirmar a hipótese de que deveria haver uma fauna rica de esponjas no Araguaia, no trecho fronteiro à cidade de Araguatins A presença intraocular de espícula de esponja de água doce das espécies Drulia uruguayensis e Oncosclera navicela foi confirmada em material avaliado histopatologicamente proveniente de três pacientes que haviam sido submetidos a lensectomia, sugerindo que espículas de água doce poderiam ser um surpreendente novo agente etiológico de patologia ocular. Assim, neste estudo foram realizados ensaios de citotoxicidade com amostras de duas espécies de esponjas coletadas no local. Os resultados indicam que os extratos das esponjas após filtração em filtro Millipore 0,45 &mu;m continuaram apresentando atividade citotóxica, sugerindo haver um componente SOLÚVEL, e não somente espículas, capaz de induzir morte celular na população de células utilizadas. Os indivíduos acometidos foram na maioria do sexo masculino com idade entre 05 e 14 anos. / In October 2005 the notification of 17 cases of eyes disease of unknown etiology, involving, in its majority, the infant population of the city of Araguatins/TO, led the local authorities to ask help to the Secretariate of State of Health of the State of Tocantins in order to discover their etiology, treatment and prevention. In affected patients, the signs frequently observed were: intense hyperemia conjutival, granuloma, episclerite, peripheral cornea infiltrated. In the anamnesis performed in patients was observed that all of them had contact with the waters of the Araguaia river. The results obtained from processing samples of water, sediments and substrates particularly in the vegetation marginal flooded, allowed confirming the hypothesis that there should be a rich fauna sponges in Araguaia, close to the city of Araguatins The presence of spicula of intraocular sponge species of freshwater Drulia uruguayensis and Oncosclera navicela was confirmed in material evaluated histopathologically from three patients who had undergone lensectomy, suggesting that \"spikes freshwater could be a surprising new etiologic agent of pathology ocular\". Thus, in this study was performed cytotoxicity assays with samples from two species of sponges collected in place. The results indicate that the extracts of sponges after filtration Millipore 0.45 &mu;m continued presenting cytotoxic activity, suggesting there is a SOLUBLE component, and not only spikes, capable of inducing cellular death in the population of cells used. The individuals affected were the majority of males aged between 05 and 14 years.
73

Koordinuotų žvilgsnio šuolinių judesių parametrai esant antriniams taikiniams (trikdžiams) / Parameters of coordinated saccadic movements in presence of non-targets (distracters)

Butvilas, Valdas 04 August 2011 (has links)
Šiame tyrime buvo tiriama trikdžio įtaka sakadiniams akių judesiams. Eksperimentų serijoje, tiriamieji sekė taikinį, kai kartu su taikiniu atsirasdavo ir trikdis. Trikdis atsirasdavo arčiau taikinio per vidurį kelio arba arčiau fiksacijos taško. Visi trikdžiai buvo ant trajektorijos nuo fiksacijos iki taikinio. Taip pat trikdžių atsiradimo laikas skirdavosi. Siekiamieji akių judesiai buvo paveikti trikdžių. Rezultatai parodė kad trikdis labiau įtakoja horizontalius akies judesius ir kad akių judesiai buvo labiau paveikti kai trikdis buvo per vidurį trajektorijos iki taikinio. / In this research distracter influence for saccadic eye movements was studied. In a series of experiments, participants reached to targets in the presence of visual distracters that were either adjacent to the target or either adjacent to the fixation point. Distracters were located through the reach path. The distracters were presented at different times too. The reaching eye movements were affected by the presence of the distracters The results showed that the distracters affects more horizontal eye movements. And the eyes movements are more affected when distracters were in a middle of path to the target.
74

Trauma and the psychological grotesque in the novels of Laura Hendrie, Laura Kasischke, and Gloria Naylor

Bliss, Adrienne L. January 2005 (has links)
This research uses the interpretive framework of the Psychological Grotesque to address a protagonist's response when she is unable to integrate the experience of interpersonal trauma into her psyche. The framework reveals a survival mechanism, identity incorporation, with roots in the transgressive and evolutionary nature of the grotesque as discussed in the work of Mikhail Bakhtin, Mary Douglas and Leonard Cassuto. The psychological grotesque is explicated using Stvgo by Laura Hendrie, The Life Before Her Eyes, by Laura Kasischke, and Linden Hills by Gloria Naylor.The psychological grotesque reveals how the protagonist within each of these novels, when positioned within a specific matrix of contributing factors engages in flawed survival strategies to reconcile psychic fragmentation. Drawing on theories of trauma from the work of Bessel Van Der Kolk, Dori Laub, Sigmund Freud, Mardi Horowitz, Ronnie Janoff-Bulman, Laurie Vickroy, Cathy Caruth, Peter Woods and Tim Middleton, the definition of the matrix includes: interpersonal trauma, prior history of emotional problems, no social support network, and self-perceived complicity in the violence. Where these criteria are present, the protagonist is incapable of achieving the repair of her damaged psyche in order to reintegrate into society and relief from the pain of trauma. In an effort to repair her brokeness through the incorporation of parts of the identity of others, the protagonist creates a grotesque mental hybrid living in fractured time. The protagonist experiences destabilization of time due to incorporating the temporal perspective of the other identities. A flawed survival strategy, identity incorporation leads to further psychic fragmentation.The psychological grotesque takes up the challenge of communicating the effects of trauma and addresses the lack of a literary interpretive mechanism for trauma literature in which a critical component of the narrative is the story of female victims of interpersonal violence. This framework confronts the fact that representations of women and trauma are problematic due to how trauma resists linguistic representation and because women have historically been denied a voice in the canon. Therefore, by drawing on elements of the grotesque, specifically hybridity and transgression, this interpretive framework recuperates the experiences of traumatized protagonists. / Department of English
75

Obtencao de um sistema de liberacao controlada de drogas a partir do PVAL irradiado com radiacao gama

TERENCE, MAURO C. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:46:30Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:56:20Z (GMT). No. of bitstreams: 1 07980.pdf: 5791468 bytes, checksum: 2d077456e70a82616ef0f27e1d7f3b6b (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
76

Avaliacao da protecao ocular para lasers terapeuticos em baixa intensidade

CORDON, ROSELY 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:48:28Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:57:28Z (GMT). No. of bitstreams: 1 09066.pdf: 3054181 bytes, checksum: 62e4252d9f76ef15308c15317e1fca18 (MD5) / Dissertacao (Mestrado profissionalizante em lasers em Odontologia) / IPEN/D-MPLO / Intituto de Pesquisas Energeticas e Nucleares, IPEN/CNEN-SP; Faculdade de Odontologia, Universidade de Sao Paulo
77

Att adaptera svartsjuka : En komparativ analys av hur subtext påverkats i adaptionen av romanen Dream Story till filmen Eyes Wide Shut

Radhi, Yasser January 2016 (has links)
Subtext är en sanning gömd under ytan, som avslöjar en handling eller ords sanna mening. Hur kan en adaptionsprocess påverka subtexten då en bok tolkas om till film? Syftet med denna uppsats är att applicera en komparativ adaptionsanalys för att svara på frågan kring hur subtexten i en bok påverkas av att adapteras till film. Två kapitel och dess respektive filmscener analyseras därmed för att därefter peka ut dess subtext, detta från boken Dream Story och dess filmatisering Eyes Wide Shut. Skillnaderna i hur subtexten förmedlats pekas sedan ut i resultatet, där slutsatser kring adaptionsprocessen av subtext görs. Subtexten analyseras med hjälp av Linda Segers bok Writing Subtext: What Lies Beneath, vilket understöds med Thomas Denks teorier kring komparativa analyser i Komparativ metod – förståelse genom jämförelse. Resultatet har då pekat på att subtexten påverkats av att gå från en litterär till visuell tolkning, där mediespecifika detaljer påverkat berättandet. Dock har samma subtext i stor grad framförts i filmen, det har endast handlat om mediespecifika tolkningar.
78

Approche contrastive et aspects transculturels de la communication multimodale en français et en espagnol / Contrastive approach and transcultural aspects of multimodal communication in French-speaking area and Spanish-speaking area

Tinchant, Sabine 02 December 2011 (has links)
Cette étude est une approche contrastive, multimodale et transculturelle décrivant et analysant l’espace gestuel et le rôle des gestes, du regard et de la prosodie dans des cas de reformulation chez des locuteurs francophones et chez des locuteurs hispanophones.A l’intérieur de chacune de ces aires linguistiques, nous comparons l’espace gestuel et la reformulation dans trois cultures différentes : dans l'aire francophone, nous comparons l’espace gestuel des locuteurs français de France Métropolitaine (Europe) à celui des locuteurs québécois,(Amérique du Nord) et des locuteurs cadjins de Louisiane (Amérique du Nord). Dans l'aire hispanophone, nous comparons l’espace gestuel des locuteurs espagnols (Europe) à celui des locuteurs argentins (Amérique du Sud) et des locuteurs vénézuéliens (Amérique du Sud). Nous analysons les différences et/ou similitudes qui existent chez des locuteurs parlant la même langue dans des contextes culturels différents. Nous avons choisi d’étudier l'espace gestuel et la reformulation de ces locuteurs à partir d'un corpus télévisé.Le corpus établi nous permet d’analyser l’espace gestuel des locuteurs selon le schéma de Pedelty repris par D. Mc Neill (1992) qui permet une double lecture de l’espace gestuel : sur l’axe vertical(buste, tête, au-dessus de la tête), sur l’axe horizontal (près du corps, loin du corps). Ensuite, nous étudions le rôle des gestes et du regard, en relation avec les variations intonatives, dans le processus de reformulation en situation d’interview orale. Nous analysons la fonction de l'amplitude gestuelle et des gestes de captage et points d'éclosion, étudiés par D. McNeill et M. A. Morel, en relation avec le rôle des orientations du regard et de la courbe de fréquence fondamentale, dans différents exemples de reformulation du discours oral. Nous analysons en quoi ces trois modalités du discours oral ont une double fonction d’aide à la construction du propre discours et d’aide à l’intercompréhension dans le contexte de co-énonciation. / We present a multimodal, contrastive and transcultural approach of the gesture space of French speaking area and Spanish-speaking area. We describe and analyse the gesture space on the one hand and on the other hand, the function of gesture, eyes directions and prosody in reformulation examples in French-speaking area and Spanish-speaking area.In each French or Spanish speaking area, we compare gesture space and reformulation in three different cultural areas : in French-speaking area, we compare the gesture space of French speakers of Metropolitan France, (Europe), Quebec speakers, (North America), Cajun speakers in Louisiana (North America) and in Spanish-speaking area, we compare the gesture space of Spanish speakers from Spain (Europe), speakers from Argentina (South America), speakers from Venezuela (South America). We analyse the differences and/or the similarities amongst speakers with a common language, either French or Spanish, but a different cultural environment. We decided to study gesture space and reformulation and recorded from a television corpus. Therefore, with this corpus,we can analyse gesture space speakers refering to the diagram “Division of the gesture space for transcription purposes” from Pedelty, which is presented in D. Mc Neill (1992). This diagram allows us to obtain a double reading of gesture space : on the vertical axis (trunk, head, beyondhead), on the horizontal axis (close to the body and far from the body). Afterwards, we analyse the function of gesture and eyes directions and their relationship with the intonative variations during the reformulation process in an oral interview. We analyse the functionof gesture amplitude and the function of catchments and growthpoints, studied by D. Mc Neill andM.A. Morel and their relationship with the function of eyes directions and the fundamentalfrequency (F0) variability with different examples of reformulation in the oral speech. Thereforewe analyse how these three modalities seem to have a double function to help the construction ofthe own speech and/or to help the intercomprehension, the mutual understanding in the coenunciativeprocess.
79

Obtencao de um sistema de liberacao controlada de drogas a partir do PVAL irradiado com radiacao gama

TERENCE, MAURO C. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:46:30Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:56:20Z (GMT). No. of bitstreams: 1 07980.pdf: 5791468 bytes, checksum: 2d077456e70a82616ef0f27e1d7f3b6b (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
80

Avaliacao da protecao ocular para lasers terapeuticos em baixa intensidade

CORDON, ROSELY 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:48:28Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:57:28Z (GMT). No. of bitstreams: 1 09066.pdf: 3054181 bytes, checksum: 62e4252d9f76ef15308c15317e1fca18 (MD5) / Dissertacao (Mestrado profissionalizante em lasers em Odontologia) / IPEN/D-MPLO / Intituto de Pesquisas Energeticas e Nucleares, IPEN/CNEN-SP; Faculdade de Odontologia, Universidade de Sao Paulo

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