Made available in DSpace on 2016-04-28T19:34:30Z (GMT). No. of bitstreams: 1 Paula Pinho Dias.pdf: 11546571 bytes, checksum: e18b46a30af32323b3f47e212d50b314 (MD5) Previous issue date: 2008-10-10 / Secretaria da Educação do Estado de São Paulo / This thesis was developed in accordance with the socio-cognitive line of Critical Discourse Analysis and deals with the forms of biographical representation of poet Cora Coralina constructed by she herself and by other authors. The general objective of this thesis is to contribute to analytical studies of texts written by Brazilian regional authors. The specific objectives are: 1) to examine the poet's biography based on a base text and selected intertexts of her poetic works; 2) to analyze the linguistic expressions of intertexts selected from studies of other authors; and 3) to clip other intertexts of authors whose evaluative representations aid in historically reconstructing the context of Cora Coralina's production of her poetry. Based on the assumption of dialectics between the social and the individual, one recognizes that Cora Coralina's poetry is guided by cultural values of the social memory of the groups with which she lived in Glose proximity, in or out of the city of Goiás, and the theoretic-analytical procedure adopted was the interrelation among the society, cognition, and discourse categories. Findings of the analysis indicated that: 1) although the social guides her individual, there is opposition between traditional cultural values and those represented by Cora Coralina; 2) two social groups stand out in Goiás - the conservative and the innovative - which proves the dynamics of the culture in each contemporaneity; 3) the poet's lexical choices are guided by what she experienced within her social group; 4) the evaluative representations' of her autobiography confront the past and the contemporaneity of her poetic produefion and focus personal experiences of privations which, by means of passionate modalizations, ramify into lack and neediness / Esta dissertação se desenvolve segundo a vertente sócio-cognitiva da Análise Crítica do Discurso e trata das formas de representação biográfica da poetisa Cora Coralina, construídas por ela mesma e por outros autores. O objetivo geral é contribuir com estudos analíticos de textos de autores regionais brasileiros e os específicos são: 1) examinar a biografia da poetisa a partir de um texto-base e de intertextos selecionados de sua obra poética; 2) analisar as expressões lingüísticas de intertextos selecionados de estudos e registros de outros autores; 3) recortar outros intertextos de autores cujas representações avaliativas auxiliem a reconstruir historicamente o contexto da produção de sua obra poética. Tendo por pressuposto a dialética entre o social e o individual, entende-se que a poesia de Cora Coralina é guiada por valores culturais da memória social dos grupos com os quais conviveu, fora ou dentro da cidade de Goiás, e toma-se como procedimento teórico-analítico a inter-relação das categorias: sociedade, cognição e discurso. Os resultados da análise indicam que: 1. há oposição entre os valores culturais tradicionais e os representados por Cora Coralina, ainda que o social guie seu individual; 2. destacam-se em Goiás, dois grupos sociais, o conservador e o inovador, comprovando a dinâmica da cultura em cada contemporaneidade; 3. as escolhas lexicais da poetisa são guiadas pelo vivido em seu grupo social; 4 as representações avaliativas de sua autobiografia confrontam o passado e a contemporaneidade, de sua produção poética e centram-se em experiências pessoais de privaçõe que se desdobram, por meio de modalizações passionais, em falta e carência

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2018-03-26T14:34:13Z No. of bitstreams: 1 2015 - Fernando de Azevedo da Cruz Seara.pdf: 1716878 bytes, checksum: 6a6ea74b23b441a8aafb15e937dea036 (MD5) / Made available in DSpace on 2018-03-26T14:34:14Z (GMT). No. of bitstreams: 1 2015 - Fernando de Azevedo da Cruz Seara.pdf: 1716878 bytes, checksum: 6a6ea74b23b441a8aafb15e937dea036 (MD5) Previous issue date: 2015-07-24 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / According to World Health Organization, ischemia heart diseases are the leading cause of death worldwide. Among therapeutic approaches, reperfusion is the most effective and indicated is reperfusion. Despite the better post-infarction prognostic, absolute improvement on cardiac function is hardly achieved due to ischemia/reperfusion injury (IRI). Within this context, anabolic steroids (AS) administration, in adult Wistar rats, significantly increase IRI susceptibility. Moreover, chronic administration of AS, during adolescent phase, induces persistent cardiovascular dysfunctions along adulthood. Therefore, the aim of the present study was to analyze the effects of chronic administration of supraphysiologic doses of testosterone propionate, during adolescent phase, in the susceptibility to ischemia/reperfusion injury, in adult Wistar rats. To perform it, 24 Wistar rats were allocated into two groups, AS (Testosterone propionate 5 mg kg-1, since 26? day postnatal, 5 days per week, during 5 weeks) and Control (Vehicle). In the 82? postnatal, rats were euthanized and hearts, livers, lungs, kidneys and testicles were collected. Isolated hearts were artificially perfused with modified Krebs-Henseleit solution, through Langendorff apparatus, and, then, submitted to ex vivo ischemia ? reperfusion protocol (20 minutes of stabilization, 30 minutes of global ischemia and 60 minutes of reperfusion). The left ventricle (LV) end diastolic- LVEDP), systolic- (LVSP) and developed pressures (LVDP), as well as first derivatives of pressure, maximum and minimum (dP/dt, maximum and minimum, respectively) were measured through an intraventricular latex balloon, connected to a pressure transducer. Through the electrocardiogram, susceptibility to arrhythmic episodes was analyzed. At the end of the protocol, area of infarct was delimited and gene expression of ? and ? myosin heavy chains and Glyceraldehyde 3-phosphate dehydrogenase, as well as the activity of nicotinamide adenine dinucleotide phosphate-oxidase (Nox) enzymes, were calculated. In comparison to Control group, hearts from AS group presented: Hypertrophy, due to an increase in cardiac mass (33%, P<0,001) and index (37%, P<0,001); Significantly increase in the area of infarct (54,76%, P<0,05); Worst recovery of both LVEDP and LVDP, along reperfusion; Less recovery of maximum dP/dt, during reperfusion, despite the equivalent LVSP; Reduced basal minimum dP/dt and, subsequently, reduction in the recovery of the aforementioned parameter, regarding reperfusion period; Enhanced gene expression of MHC? (%), consistent with the loss of mechanical performance; Increased incidence of arrhythmic episodes in the reperfusion period (100%, P<0,01). No statistical difference could be seen in regard to the Nox activity. For the first time, we demonstrated that AS treatment during adolescent phase promotes cardiac hypertrophy and gene reprogramming, both persistent during adulthood, besides an increase susceptibility to IRI, through in the larger area of infarct and poor recovery of cardiac electrical and mechanical proprieties, in isolated hearts of adult Wistar rats / De acordo com a OMS, as doen?as isqu?micas do cora??o consistem na maior causa mortis global. Dentre as abordagens terap?uticas, a mais eficaz ? a reperfus?o. A despeito da melhora no progn?stico p?s-infarto, a recupera??o plena da fun??o card?aca dificilmente ? alcan?ada, devido a inj?ria de isquemia/reperfus?o (IIR). Neste contexto, a administra??o de EA em ratos Wistar adultos enaltece a susceptibilidade ? IIR. Ademais, a administra??o de EA em ratos Wistar, ao longo da adolesc?ncia, favorece o desenvolvimento de disfun??es cardiovasculares persistentes durante a fase adulta. Desta forma, objetivou-se, com o presente estudo, analisar os efeitos da sobrecarga cr?nica de propionato de testosterona, ao longo da fase adolescente, na susceptibilidade ? IIR, em ratos Wistar adultos. Para tanto, foram utilizados 24 ratos Wistar machos, divididos em dois grupos: EA (Propionato de testosterona 5 mg kg-1, a partir do 26? dia p?s-natal, 5 vezes por semana/ 5 semanas) e CTL (ve?culo). No 82? dia p?s-natal, os ratos foram submetidos ? eutan?sia para a coleta ?rg?os. Os cora??es isolados foram submetidos ? perfus?o artificial em aparato de Langendorff, e, assim, ao protocolo de isquemia/reperfus?o. As press?es diast?lica final (PDF), sist?lica (PS) e desenvolvida (PD), do ventr?culo esquerdo (VE), e as primeiras derivadas de press?o do VE, m?xima e m?nima (dP/dt m?xima e m?nima, respectivamente), foram mensuradas atrav?s de um bal?o de l?tex intraventricular, conectado a um transdutor de press?o. Atrav?s do eletrocardiograma, foi analisada a susceptibilidade aos epis?dios arr?tmicos. Ao final do protocolo, as ?reas de infarto foram demarcadas e a express?o g?nica das cadeias pesadas de miosina e gliceralde?do-3-fosfato desidrogenase, assim como a atividade enzimas da fam?lia de niconinam?da adenina dinucleot?deo fosfato oxidase (Nox), no ventr?culo esquerdo, foram avaliadas. Em rela??o ao grupo Controle, os cora??es dos animais tratados com EA apresentaram: Hipertrofia, atrav?s do aumento na massa (aumento de 33%, P<0,001) e do ?ndice card?aco (aumento de 37%, P<0,001); aumento significativo da ?rea de infarto (aumento de 54,76%, P<0,05); T?nue recupera??o da PDFVE, assim como da PDVE, durante a reperfus?o; Inferior recupera??o da dP/dt m?xima, ao longo da reperfus?o, a despeito da equivalente recupera??o na PSVE; Reduzida dP/dt m?nima basal e, subsequentemente, redu??o na recupera??o deste par?metro, ao longo da reperfus?o; Aumento significativo da express?o g?nica da MHC? (P<0,01), condizente o preju?zo no desempenho mec?nico; Maior incid?ncia de epis?dios arr?tmicos, ao longo da reperfus?o (aumento de 100%, P<0,01). N?o houve diferen?a em rela??o ?s atividades das Nox. Pela primeira vez, foi demonstrado que a administra??o de EA, ao longo da adolesc?ncia, provoca hipertrofia e reprograma??o g?nica card?aca, persistente durante a fase adulta, al?m de aumentar, significativamente, a susceptibilidade ? IIR, por meio do aumento na ?rea de infarto e piora na recupera??o das propriedades mec?nicas e el?tricas card?acas, em cora??es isolados de ratos Wistar adultos.

Made available in DSpace on 2014-12-17T15:37:21Z (GMT). No. of bitstreams: 1 RosanaGG.pdf: 1154706 bytes, checksum: 2604df1c37a7d7f1cfb38a953b1e7635 (MD5) Previous issue date: 2006-05-11 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The marine tucuxi, Sotalia guianensis, is one of the smallest known cetaceans, has coastal habits, and occurs from Hondures to Santa Catarina, in southern Brazil. The objective of this dissertation was to describe diving behavior of the marine tucuxi in three age classes and to analyze the cardiac capacity to dive through the examination of hearts of stranded specimens. Observations were made from October 2004 to November 2005 from a vantage point, in Curral Bay at Pipa beach-RN. We used Ad Libitum sampling and All occurrences to record the behaviors. The diving was characterized by the total exposition of the tail fluke for a few seconds, in 90? or 45? angles. Were recorded 131 dives in three behavioral contexts: foraging, traveling and socialization. The difference between juveniles and adults in dive time and fluke out at 45? or 90? to search and/or capture prey is probably influenced by the strategy used and ability to capture the prey. The frequency of fluke out at 90? for foraging in adults may be related to increased physiological efficiency of adults in comparison to juveniles. However, in the context of travel and socialization the dive time and fluke out were independent between the age classes. Dive in calves were frequent during socialization (play behavior) and traveling. This, associated with synchronic calve-adult diving suggests that a relationship of these behaviors and the acquisition of experience and foraging skills. As observed in other cetaceans, the heart (n=12) of the estuarine dolphin is broad and presents long ventricles which form a round apex. The right ventricle is long and narrow. The degree of dilatation of the aortic bulb may support the heart during diastole. The characteristic morphology of the heart and short dive duration < 2 min and depth ranged from 10m in the estuarine dolphin, can be likely at physiological adaptation for diving, typical de dolphins with coastal habits. The limitation of diving time in this specie may be influenced by anatomical and physiological restrictions / O boto-cinza, Sotalia guianensis, ? um dos menores cet?ceos conhecidos, tem h?bitos costeiros, e ocorre desde Honduras at? Santa Catarina, sul do Brasil. Este trabalho teve como objetivo descrever o comportamento de mergulho do boto-cinza em tr?s faixas et?rias e analisar a capacidade card?aca de mergulho atrav?s de an?lises dos cora??es. As observa??es foram realizadas entre outubro de 2004 a novembro de 2005, a partir de um ponto fixo, na enseada do Curral, na praia de Pipa-RN. Foi utilizado o m?todo amostral Ad-Libitum e registro de todas as ocorr?ncias. O mergulho foi caracterizado pela exposi??o total da nadadeira caudal em posi??o vertical por alguns segundos, fora da superf?cie da ?gua, no ?ngulo de 90? ou 45?. Foram registrados 131 mergulhos divididos em tr?s contextos comportamentais: forrageio, deslocamento e socializa??o. A diferen?a do tempo de apn?ia e a exposi??o da cauda a 45? ou 90? para procurar e/ou capturar presas, entre os juvenis e adultos, pode estar influenciada pela estrat?gia e habilidade para capturar as presas. A freq??ncia da cauda a 90? para forragear nos adultos est? relacionada com a maior efici?ncia fisiol?gica dos botos que gastam mais tempo submersos que os juvenis. Entretanto, nos contextos de deslocamento e socializa??o o tempo de apn?ia e a exposi??o da cauda foram independentes nas duas faixas et?rias. Os mergulhos dos filhotes foram freq?entes durante a socializa??o (relacionada a atividade de brincadeiras), e o deslocamento. A observa??o de mergulhos sincr?nicos filhote-adulto, aliado ?s caracter?sticas anteriores, sugerem que elas est?o relacionadas ? experi?ncia e aquisi??o de habilidades de forrageio. Caracter?sticos dos cet?ceos, o cora??o (n=12) do boto-cinza ? largo e o ventr?culo ? comprido com um ?pice arredondado e formado pelos dois ventr?culos. O ventr?culo direito ? longo e estreito. O grau de dilata??o do bulbo a?rtico, sendo maior nos adultos, pode oferecer ajuda para o cora??o durante a di?stole. As caracter?sticas morfol?gicas do cora??o e o tempo de apn?ia < 2 minutos e a profundidade < 10m no boto-cinza, podem estar relacionadas com as adapta??es fisiol?gicas ao mergulho, t?pico de golfinhos de h?bitos costeiros. A limita??o do tempo de mergulho nesta esp?cie ? provavelmente influenciada pelas restri??es anat?micas e fisiol?gicas ? imers?o ao mergulho

Cora Diamond nous présente dans son œuvre L’Esprit Réaliste une méthode nous permettant de répondre à la question « comment vivre? ». Elle nous présente aussi une méthode nous permettant d’élargir notre raisonnement moral et sortir du vocabulaire limité d’une interprétation plus traditionnelle de la philosophie morale. Aux questions de jugements, d’évaluations, de dilemmes et de métaéthique, elle souhaite introduire des concepts comme ceux de l’imagination, de l’improvisation, de la perception morale, de la texture d’être et d’aventure. La possibilité est aussi ouverte pour chercher une éducation morale non édifiante par la littérature. En effet, élargir le raisonnement moral implique aussi de ne pas se limiter à la forme argumentaire traditionnelle en philosophie. Il s’agit de voir la pertinence dans des œuvres littéraires comme des romans de fiction et des œuvres poétiques, mais aussi dans des œuvres cinématographiques. Diamond nous présente donc avec une éthique qui ne nous apporte pas de connaissances prescriptives, mais plutôt une connaissance conceptuelle et sensible. Elle nous apprend à voir les différences entre différentes conceptions de la vie, à se connaître soi-même et à aller à la rencontre de l’autre. / Cora Diamond presents to us in her work The Realistic Spirit a method allowing us to answer the question “how to live?” It also presents us with a method by which we can broaden our moral reasoning and break out of the limited vocabulary of a more traditional interpretation of moral philosophy. To questions of judgments, evaluations, dilemmas and meta-ethics, she wishes to introduce concepts such as those of imagination, improvisation, moral perception, texture of being and adventure. The possibility is also opened for seeking a non-edifying moral education through literature. Indeed, expanding moral reasoning also implies not being limited to the traditional form of argument in philosophy. It is about seeing the relevance in literary works like fiction novels and poetic works, but also in cinematographic works. Diamond therefore presents us with an ethic that does not provide us with prescriptive knowledge, but rather conceptual and sensitive knowledge. It teaches us to see the differences between different conceptions of life, to know ourselves and to meet others.

No description available.

The aim of this Master’s thesis is to achieve philosophical clarity on an interpretative problem I have been struggle with in Euripides’ Medea: That Medea murders her own children, while claimingto love them. Situated within the philosophical and literary tradition of ordinary language philosophy and ordinary language criticism, the thesis draws on ideas, theoretical discussions, and concepts from Ludwig Wittgenstein, Toril Moi, Stanley Cavell, Cora Diamond, and Niklas Forsberg – but also Søren Kierkegaard. The analysis is divided in two parts. The first is anarticulation of the grammar of my problem through Cora Diamond’s conception of the phenomenon “a difficulty of reality”, and an emulation of a hermeneutical strategy to deal with such problems, which I identify in Søren Kierkegaard’s Fear and Trembling. I reach the conclusion that the co-existence of Medea’s murder och love is a paradox, which cannot be thought. The second part of the analysis is an attempt to step out of this paradox. Here, I compare Medea to Stanley Cavell’s readings on the Shakespearean tragedies Othello and King Lear, and Cavell’s ideas on “lived scepticism”, “avoidance of love” and “best case of acknowledgment”. By doing this, I am able to form the hypothesis that Medea’s understanding of “love” has been severely damagedafter Jason’s betrayal, and that she actually fails to sensically mean that she loves her children. In its use of my own confusion as a starting point and in employing Toril Moi’s views on reading, this thesis continuously stresses the individual reader’s responsibility in literary interpretation, as well as the importance of daring to voice or personal struggles, questions, and interests – even (or especially) when reading great classics.

Made available in DSpace on 2016-01-26T12:51:19Z (GMT). No. of bitstreams: 1 jorgeadasdib_tese.pdf: 343099 bytes, checksum: ab3f9830cf7060129a9dcec26d66b83c (MD5) Previous issue date: 2008-06-06 / No previous study has addressed the question of prognostic determinants for patients with Chagas? cardiomyopathy at the terminal stage listed for heart transplantation. Casuistic and Method: All patients listed for heart transplantation at our institution from August, 2000 to March, 2005 were considered for the study. Patients removed from the waiting list for clinical status improvement were excluded from the investigation. Patients were followed until death, cardiac transplantation or the end of the study period. Cardiac transplant recipients were censored at the time of transplantation. No patient was lost to follow up. A Cox regression hazards model was used to establish independent predictors of all-cause mortality. Variables previously demonstrated to predict mortality in either Chagas or non-Chagas? disease heart failure were entered the univariate analysis. Separate analyses were performed for Chagas and non-Chagas? disease patients. Results: Median follow up was 32 (15,121) days in Chagas disease and 79 (14,151) days in non-Chagas? disease patients. In Chagas disease patients, the hemodynamic instability (p=0.01; hazard ratio=0,077, 95% confidence interval, 0.01 to 0.58) as well as the transpulmonary gradient (p=0.02; hazard ratio=1.15, 95% confidence interval, 1.02 to 1.30) were retained as independent predictors of all-cause mortality. Serum sodium levels (p=0.002; hazard ratio=0.81; 95% confidence interval, 0.71 to 0.93) was independent predictor of all-cause mortality for non-Chagas? disease patients. Conclusion: The hemodynamic instability and transpulmonary gradient were independent predictors of all-cause mortality for Chagas? disease patients listed for heart transplantation. A larger, prospective cohort study is needed to validate our findings. / At? agora nenhum estudo preocupou-se em estabelecer determinantes progn?sticos para pacientes com insufici?ncia card?aca cr?nica terminal secund?ria ? cardiomiopatia da doen?a de Chagas na fila de espera para transplante card?aco. Casu?stica e M?todo: Todos os pacientes alocados em fila de espera de transplante card?aco em nossa institui??o, de agosto de 2000 a mar?o de 2005, foram inicialmente considerados para o estudo. Os pacientes que foram removidos da lista de espera em virtude de melhora no estado cl?nico foram retirados do estudo. Os pacientes foram acompanhados at? a morte, transplante card?aco ou a data final estipulada para o estudo. Os pacientes receptores de transplante de cora??o foram retirados do estudo na data em que o ato operat?rio ocorreu. N?o se perdeu contato com os pacientes durante o acompanhamento cl?nico enquanto na fila de espera de transplante card?aco. O modelo de an?lise de riscos proporcionais de Cox foi utilizado para se estabelecer vari?veis de predi??o independentes de mortalidade geral. As vari?veis que eram capazes de predizer mortalidade geral em pacientes com insufici?ncia card?aca cr?nica secund?ria ? cardiomiopatia da doen?a de Chagas ou a outras cardiomiopatias foram utilizadas no modelo univariado. An?lises univariadas foram feitas nos pacientes chag?sicos e n?o chag?sicos separadamente. Resultados: A mediana do tempo de acompanhamento cl?nico foi 32 (15, 121) dias nos pacientes chag?sicos e 79 (14, 151) dias nos pacientes n?o chag?sicos. Nos pacientes chag?sicos, a instabilidade hemodin?mica (p=0,01; raz?o de risco=0,077, intervalo de confian?a de 95% entre 0,01 e 0,58) e o gradiente transpulmonar (p=0,02; raz?o de risco =1,15, intervalo de confian?a de 95% entre 1,02 e 1,30) foram as vari?veis de predi??o independentes de mortalidade geral. Os n?veis s?ricos de s?dio (p=0,002; raz?o de risco =0,81; intervalo de confian?a de 95% entre 0,71 e 0,93) foi a vari?vel de predi??o independente para os pacientes n?o chag?sicos na fila de espera para transplante card?aco. Conclus?es: A instabilidade hemodin?mica e o gradiente transpulmonar foram preditores independentes de mortalidade geral em pacientes com insufici?ncia card?aca cr?nica secund?ria ? cardiomiopatia da doen?a de Chagas na lista de espera para transplante card?aco. Um estudo prospectivo de coorte longitudinal ? necess?rio para validar os resultados obtidos nesta investiga??o.

Submitted by (lucia.rodrigues@ufrpe.br) on 2017-02-16T13:10:45Z No. of bitstreams: 1 Romulo Augusto Lins de Campos.pdf: 5930168 bytes, checksum: 7553330ff526456aa81970434c7c3475 (MD5) / Made available in DSpace on 2017-02-16T13:10:45Z (GMT). No. of bitstreams: 1 Romulo Augusto Lins de Campos.pdf: 5930168 bytes, checksum: 7553330ff526456aa81970434c7c3475 (MD5) Previous issue date: 2011-03-16 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / Potentiometric sensors are known for their high sensitivity and selectivity. Such sensors have versatility, low cost and robustness, which ensures their applicability in a wide variety of complex chemical samples. The ion-selective electrodes for polymeric membrane are the best known potentiometric sensors, has by these traits. However, modified carbon paste electrodes have gained prominence due a great advance in their studies. This paper proposes an electrode chemically modified carbon paste for potentiometric determination of copper (II), using a new ionophore lariat-crown ether synthesized from precursor aminopropyl triethoxysilane is a silylating agent known in the literature. Studies were conducted to evaluate the influence of pH on the potential, the best buffer as supporting electrolyte, and the experimental design of mixtures to obtain the best composition of EQMPC. The proposed electrode showed a sensitivity of 38.5 mV/decade of activity with a detection limit of 2.04 x 10-5 mol L-1, and as a supporting electrolyte buffer biftalate/HCl pH = 3.0 proving to be promising for application in the determination of Cu(II). The electrode showed no significant analytical sensitivity to Co(II), Ni(II) and Zn(II) being these their main interferences. / Sensores potenciométricos são conhecidos por sua alta sensibilidade e seletividade. Tais sensores apresentam versatilidade, baixo custo e robustez, o que garante a esses sensores aplicabilidade em uma grande variedade de amostras químicas complexas. Os eletrodos íon-seletivos de membrana polimérica são os sensores potenciométricos mais conhecidos, por possuirem essas características. Contudo, os eletrodos modificados de pasta de carbono têm ganhado forte destaque devido ao avanço em seus estudos. Neste trabalho é proposto um eletrodo quimicamente modificado de pasta de carbono para determinação potenciométrica de cobre (II), utilizando um novo ionóforo lariat-éter coroa sintetizado a partir de precursor aminopropil trietoxisilano que é um agente sililante conhecido na literatura. Foram realizados estudos para avaliar a influência do pH sobre o potencial, o melhor tampão como eletrólito de suporte, além do planejamento experimental de misturas para se obter a melhor composição do EQMPC. O eletrodo proposto apresentou uma sensibilidade de 38,5mV/década de atividade com limite de detecção de 2,04 x 10-5 mol L-1, tendo como eletrólito de suporte um solução-tampão biftalato/HCl pH = 3,0 demonstrando ser promissor para aplicação na determinação de íons Cu(II). O eletrodo não apresentou sensibilidade analítica significativa aos íons Co(II), Ni(II) e Zn(II) sendo esses seus principais interferentes.

El trabajo analiza el concepto de bitácora como objeto/sujeto en donde confluyen aportes individuales y colectivos, sobretodo en el caso de las bitácoras comunitarias. Además de considerar las bitácoras personales se analizarán las bitácoras/bocetos de autores con trayectoria: solitamente escritas por viajeros, antropólogos, comunicadores o artistas, se trata de una base de datos en donde surge la hp de que el mismo material pueda ser considerado académicamente desde diferentes disciplinas cuales la ciencia de la comunicación, la semiótica, las teorías del arte y la antropología cubriendo así múltiples definiciones de medio de comunicación, libro de artista o diario de campo y hasta salirse de las mismas para encontrar entereza en un solo suporte. Lo que implicaría legitimación de unas nuevas herramientas para el trabajo académico y la abertura a estudios interdisciplinarios basados en la expresión visual; además de garantizar un soporte caracterizado por la autoreflexividad, la concientización y la creatividad. A lo largo de la investigación se plantea que la posibilidad expresiva ínsita en las bitácoras contribuya al desarrollo personal y eventualmente social, capacite y empodere quienes las escriben subrayando la posibilidad de tener voz; siendo una herramienta maleable, fácil de utilizar y transportar y económica puede tener un amplio utilizo por parte de quien quiera utilizarlas como medio expresivo. La investigación se acerca a las bitácoras personales escritas desde el 2005 por un total de treinta cinco cuadernos, al mismo tiempo analiza las bitácoras de otros autores contemporáneos internacionales: se trabajará con artistas, literatos, antropólogos, comunicólogos, semióticos y viajeros profesionales. Los conceptos claves serán la relación con lo local y el desarrollo, la creatividad, la percepción y significación, la interdisciplina y la autoreflexividad. Pero al mismo tiempo habrá énfasis en el concepto de autor con un apartado dedicado a la otredad, a la autoría comunitaria hasta llegar a la plasmación teórico-pragmática de unos cuadernos de autoría comunitaria, previo talleres artísticos y prácticas expresivas. Un entero capítulo explica las experiencias significativas detallando las modalidades metodológicas y un sub-capítulo será dedicado a la planeación de una exposición formal de todo este trabajo. / Barbotto, S. (2013). Vita-coras de una etnografía itinerante, subjetiva y social: textos polisémicos y experiencialidad transdisciplinar [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/34783 / TESIS

benchmarking, five-stage model of benchmarking, competition, performance, comparsion