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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

Fermentação alcoólica de mosto com alta concentração de açúcar / Alcoholic fermentation of high sugar concentration wort

Cerqueira, Diogo Patrini 14 October 2013 (has links)
A fermentação de mosto com alta concentração de açúcar (ACA) pode ser utilizada em escala industrial para a produção de etanol combustível. Esta tecnologia apresenta vantagens como a obtenção de níveis mais elevados de etanol e a minimização dos custos de produção, em contraposição apontam novos desafios, como minimizar os efeitos do estresse, osmótico e alcoólico, que as leveduras são submetidas. A suplementação do mosto com fontes nitrogenadas pode aumentar o rendimento de etanol durante a fermentação alcoólica, visto que este elemento desempenha importantes funções na fisiologia da levedura. Para avaliar o efeito da suplementação de mosto ACA, caldo de cana-de-açúcar concentrado a 25°, 30° e 35°Brix e suplementado com sulfato de amônio foi fermentado por linhagens comerciais de levedura, PE-2 e CAT-1, a 30ºC e 60rpm e monitorado por ciclos de 24 horas. Seis ciclos fermentativos foram realizados, mediante o reciclo das células de levedura por centrifugação a 2.000 g por 15 min. Os parâmetros analisados foram o desprendimento de CO2 obtido por avaliação da massa (pesagem em balança analítica); viabilidade celular determinada pelo método de coloração com eritrosina; teor alcoólico determinado em densímetro digital, após destilação da amostra, análise de açúcares totais e residuais por cromatografia de troca iônica e a concentração de nitrogênio assimilável determinada colorimetricamente pelo método da ninidrina, utilizando glicina como padrão. A suplementação dos meios com sulfato de amônio propiciou maiores taxas reprodutivas das leveduras, formando maior biomassa em todas as concentrações de Brix estudadas. Os valores de etanol observados foram superiores nas amostras suplementadas, atingindo um teor acima de 16% (v/v) para a linhagem CAT-1 e acima de 15,5% (v/v) para a linhagem PE-2 no mosto contendo 30°Brix. Entre as linhagens, a CAT-1 foi a que suportou melhor a pressão osmótica do meio e, consequentemente, apresentou produtividade fermentativa superior, atingindo uma produção acima de 5,2g/L/h. A presença da fonte de nitrogênio mostrou ser fundamental para o processo fermentativo, principalmente em mosto ACA, com concentrações mais elevadas de açúcar. A fermentação do mosto com 25°Brix não apresentou o mesmo comportamento. / The fermentation of sugar cane wort with a high concentration of sugar (ACA, very high gravity) can be used on an industrial scale for the production of fuel ethanol. This technology has the advantage of achieving higher levels of ethanol and reduction of production costs, although the challenges are to minimize the effects of osmotic and alcohol stress that the yeasts are subjected. Supplementation with nitrogen sources provides important roles in the physiology of yeast and it can increase the yield of ethanol during fermentation. To evaluate the effect of supplementation of ACA wort, juice of sugar cane was concentrated at 25°, 30° and 35°Brix and supplemented with ammonium sulfate. The medium was fermented by commercial yeast strains, PE-2 and CAT-1, at 30° C, with orbital shaking. The process was followed in 24 hours cycles. Six fermentation cycles were performed with the yeast cells recycling. At the end of each cycle, the yeast biomass was separated from liquid fraction by centrifugation at 2,000 g for 15 min. Progress of fermentations was analyzed by measuring CO2 production by evaluating the mass reduction; yeast cell viability by staining method with erythrosine; alcoholic content of distilled sample was determined by densitometry, residual sugars were analyzed by ion exchange chromatography and assimilable nitrogen concentration determined colorimetrically by ninhydrin method, using glycine as standard. The strains PE-2 and CAT-1 with ammonium sulfate reached higher reproductive rates and improved biomass at all sugar concentrations. Higher ethanol production was observed in the supplemented samples, reaching a level above 16% (v/v) for CAT-1 strain and above 15.5% (v/v) for PE-2 strain at 30° Brix concentration. CAT-1 strain showed more tolerance with the high osmotic pressure of the medium and consequently improved productivity fermentation, reaching an ethanol production above 5.2 g/L.h. Nitrogen source proved to play a crucial role in the fermentation process, mainly in ACA wort, however, the same effect was not observed at 25°Brix.
12

O conceito de regras em da certeza : terceiro Wittgenstein?

P?dua, Gelson Luiz Daldegan de 01 August 2007 (has links)
Made available in DSpace on 2015-04-14T13:55:28Z (GMT). No. of bitstreams: 1 395304.pdf: 510170 bytes, checksum: b2868c11d4717b5e7f4642ea05bab687 (MD5) Previous issue date: 2007-08-01 / O presente trabalho tem por objetivo central investigar o conceito de Regras e a no??o de seguir regras na obra Da Certeza de Wittgenstein para verificar a exist?ncia de mudan?as significativas no pensamento do fil?sofo apresentada em Investiga??es Filos?ficas que justifique a id?ia de terceiro Wittgenstein. Se, do Tractatus ? Investiga??es Filos?ficas houve uma redefini??o da natureza da gram?tica, de Investiga??es ? Da Certeza, Wittgenstein redefiniu a extens?o desta gram?tica. Com a redefini??o da natureza da gram?tica, o fil?sofo prop?s os jogos de linguagem e, como todo jogo esse tamb?m est? associado ? regras. Essas regras estavam abertas ? inspe??o, o qual conferia a elas uma arbitrariedade, elas n?o tinham contas a prestar ? realidade, elas nada mais faziam do que determinar o significado e, por esse motivo, n?o eram respons?veis perante o significado. J? com a redefini??o da extens?o da gram?tica o que parece ser contingente ou parece proposi??es emp?ricas pode apresentar um status l?gico e por isso tamb?m podem pertencer ? gram?tica. Como todo jogo de linguagem que apresenta proposi??es emp?ricas ou fatos contingentes precisa ser encerrado ou transformado em um novo jogo, o jogador precisa recorrer ? id?ia de Weltbild para reestruturar as regras do novo jogo. Este trabalho prop?e que com a no??o de Weltbild ? poss?vel separar o que ? emp?rico do que ? aparentemente emp?rico e assim, poder estabelecer regras para que o jogo de linguagem aconte?a.
13

Terapia combinada com eritropoetina e fator estimulante da col?nia de granul?citos em um modelo de infarto agudo do mioc?rdio

Angeli, Franca Stedile 20 December 2012 (has links)
Made available in DSpace on 2015-04-14T13:35:38Z (GMT). No. of bitstreams: 1 445402.pdf: 4168826 bytes, checksum: 12e5afbd895c8db20632ed4bc6ddacbf (MD5) Previous issue date: 2012-12-20 / Background: Erythropoietin (EPO) and granulocyte colony stimulating factor (GCSF) have generated interest as novel therapies after myocardial infarction (MI), but the effect of combination therapy has not been studied in the large animal model.Objetives: We investigated the impact of prolonged combination therapy with EPO and GCSF on cardiac function, infarct size, and vascular density after MI in a porcine model.Methods: MI was induced in pigs by a 90 min balloon occlusion of the left anterior descending coronary artery. 16 animals were treated with EPO+GCSF, or saline (control group). Cardiac function was assessed by echocardiography and pressure-volume measurements at baseline, 1 and 6 weeks post-MI. Histopathology was performed 6 weeks post-MI.Results: At week 6, EPO+GCSF therapy stabilized left ventricular ejection fraction, (41?1% vs. 33?1%, p<0.01) and improved diastolic function compared to the control group. Histopathology revealed increased areas of viable myocardium and vascular density in the EPO+GCSF therapy, compared to the control. Despite these encouraging results, in a historical analysis comparing combination therapy with monotherapy with EPO or GCSF, there were no significant additive benefits in the LVEF and volumes overtime using the combination therapy.Conclusion: Our findings indicate that EPO+GCSF combination therapy promotes stabilization of cardiac function after acute MI. However, combination therapy does not seem to be superior to monotherapy with either EPO or GCSF / Introdu??o: Recentemente, a eritropoetina (EPO) e o fator estimulante de col?nia de granul?citos (GCSF) surgiram como potenciais terapias no tratamento do infarto agudo do mioc?rdio (IAM). Contudo, os efeitos da terapia combinada ainda est?o por ser investigados.Objetivo: Investigar a efic?cia e seguran?a da terapia combinada com EPO e GCSF p?s-IAM em um modelo porcino.M?todos: IAM foi induzido em porcos dom?sticos atrav?s da oclus?o por 90 minutos da coron?ria descendente anterior esquerda. Dezesseis animais foram tratados com an?logo de longa a??o da EPO a GCSF ou solu??o salina (grupo controle). Fun??o card?aca foi avaliada via ecocardiografia e medidas de press?o-volume no inicio do estudo, uma e seis semanas ap?s o IM. Histologia foi realizada seis semanas ap?s o IAM.Resultados: Seis semanas ap?s o IAM, a terapia combinada com EPO e GCSF demonstrou estabilizar a fra??o de eje??o ventricular esquerda (41?1% vs. 33?1%, p<0.01) e melhorar a fun??o diast?lica quando comparada com o grupo controle. Avalia??o histopatol?gica revelou aumento de ?reas de mioc?rdio vi?vel e de densidade vascular no grupo tratado com EPO e GCSF quando comparada com o grupo controle. Apesar dos resultados encorajadores, em uma avalia??o hist?rica comparando a terapia combinada com a monoterapia com EPO ou GCSF, a terapia combinada n?o demonstrou ter beneficio adicional na preserva??o da fra??o de eje??o ou volumes ventriculares ao longo do per?odo em estudo.Conclus?o: Os presentes achados sugerem que a terapia combinada com EPO e GCSF promove a estabiliza??o da fun??o card?aca ap?s o IAM. Contudo, a terapia combinada n?o aprece ser superior a monoterapia com EPO ou GCSF
14

Senhora press??o arterial, me conceda essa dan??a? Os efeitos de uma sess??o aguda de dan??a de car??ter l??dica sobre a press??o arterial e frequ??ncia card??aca em idosas

Sousa, Francisco Eric Vale de 08 December 2016 (has links)
Submitted by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-04-05T17:20:44Z No. of bitstreams: 1 FranciscoEricValedeSousaDissertacao2017.pdf: 843554 bytes, checksum: 28da4913da460128349b6bdc7cf1994d (MD5) / Made available in DSpace on 2017-04-05T17:20:44Z (GMT). No. of bitstreams: 1 FranciscoEricValedeSousaDissertacao2017.pdf: 843554 bytes, checksum: 28da4913da460128349b6bdc7cf1994d (MD5) Previous issue date: 2016-12-08 / Hypertension (AH) increases with the passage of years, affecting mainly people over 60 years. In face of this reality, daily dance practice is responsible for a number of benefits in everyday life, such as improved balance, motor coordination and blood pressure (BP) reduction. However, little is known about the acute effects of a playful dance session in the elderly. The objectives of the present study were to analyze the behavior of PA and HR during and after an acute ludic dance session in hypertensive elderly women; To verify the contribution of the dance of playful character as hypotensive agent of the Blood Pressure; Check the regulation of CF, through an acute dance session of a playful character; To demonstrate the dance of playful character as a propulsive tool to obtain the health of hypertensive elderly women. Ten elderly women (65 ?? 3, years) of a Group of Coexistence of Sector O, Ceil??ndia - DF were recruited. They performed a dance session of a playful character with an average duration of 60 minutes, which is divided into 5 ', 10', 40 'and 4' back. PA was measured at rest, at the end and post-exercise: 0 ', 5' and 10 'by the oscillometric method (BPA 100, Microlife, Switzerland). Repeated measures ANOVA was used for statistical analysis (Prism 6.0, USA). As a result, systolic blood pressure (SBP) increased immediately after the session (p <0.01). However, there was a significant reduction of SBP (p <0.05) in the recovery period at 5 'and 10' post-exercise, there was no change in diastolic BP (Table 1). This study demonstrated the cardiovascular safety of this modality of physical activity, and the potential benefit of dance in post-exercise hypotension in hypertensive elderly women. It is possible that this hypotensive effect may last for more than 10 'after the session. In the future the studies could analyze the cardiovascular parameters induced by the dance by a greater post-exercise period. / A hipertens??o arterial (HA) aumenta com o passar dos anos, acometendo principalmente as pessoas com mais de 60 anos. Diante dessa realidade, a pr??tica di??ria da dan??a ?? respons??vel por uma s??rie de benef??cios na vida cotidiana, como melhora do equil??brio, coordena????o motora e redu????o da press??o arterial (PA). No entanto, pouco se sabe dos efeitos agudos de uma sess??o de dan??a de car??ter l??dica em idosas. Para tanto os objetivos do presente estudo foi Analisar o comportamento da PA e FC durante e ap??s uma sess??o aguda de dan??a de car??ter l??dico em idosas hipertensas; Verificar a contribui????o da dan??a de car??ter l??dico como agente hipotensor da Press??o Arterial; Verificar a regula????o da FC, por meio de uma sess??o aguda da dan??a de car??ter l??dico; Demonstrar a dan??a de car??ter l??dico como uma ferramenta propulsora para obten????o de sa??de de idosas hipertensas. Foram recrutadas 10 mulheres idosas (65??3, anos) de um Grupo de Conviv??ncia do Setor O, Ceil??ndia ??? DF. Elas realizaram uma sess??o de dan??a de car??ter l??dica com dura????o m??dia de 60 minutos, sendo esta dividida em alongamento (5???), aquecimento (10???), parte principal (40???) e volta ?? calma (5???). A PA foi mensurada em repouso, final e p??s-exerc??cio: 0???, 5??? e 10???, pelo m??todo oscilom??trico (BPA 100, Microlife, Su????a). Foi usado ANOVA de medidas repetidas para an??lise estat??stica (Prism 6.0, USA). Como resultados a press??o arterial sist??lica (PAS) aumentou imediatamente ap??s a sess??o (p <0,01). No entanto, houve uma redu????o significativa da PAS (p <0,05) no per??odo de recupera????o aos 5??e 10??p??s- exerc??cio, n??o houve altera????o na PA diast??lica (Tabela 1). Este estudo demonstrou a seguran??a cardiovascular desta modalidade de atividade f??sica, e o potencial benef??cio da dan??a na hipotens??o p??s-exerc??cio em idosas hipertensas. ?? poss??vel que este efeito hipotensor possa perdurar por mais de 10??? ap??s a sess??o. No futuro os estudos poderiam analisar os par??metros cardiovasculares induzidos pela dan??a por um maior per??odo p??s-exerc??cio.
15

Custo energ??tico e comportamento cardiovascular durante as sess??es de pilates solo e aparelho

Andrade, Let??cia de Souza 26 February 2016 (has links)
Submitted by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-04-10T13:26:44Z No. of bitstreams: 1 LeticiadeSouzaAndradeDissertacao2016.pdf: 719201 bytes, checksum: 6ed2347788404bc8794670bfc898f3d3 (MD5) / Approved for entry into archive by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-04-10T13:26:55Z (GMT) No. of bitstreams: 1 LeticiadeSouzaAndradeDissertacao2016.pdf: 719201 bytes, checksum: 6ed2347788404bc8794670bfc898f3d3 (MD5) / Made available in DSpace on 2017-04-10T13:26:55Z (GMT). No. of bitstreams: 1 LeticiadeSouzaAndradeDissertacao2016.pdf: 719201 bytes, checksum: 6ed2347788404bc8794670bfc898f3d3 (MD5) Previous issue date: 2016-02-26 / Pilates exercises have been popular as a mode of exercise not only for rehabilitation but also for improving overall health. However, there are no reports in the literature regarding the energy cost of exercise based on the method, especially when compare mat or equipment use. The aim of this study was to analyze and compare the energy cost, HR and BP in Pilates sessions in the mat and on the equipment. For this, were selected 18 volunteers to perform both Pilates sessions (mat and equipment), in different days. The variables analyzed were VO2 through indirect calorimetry, and subsequent calculation of the energy cost in METs and Kcal/min-1, blood lactate, HR and BP. ANOVA for repeated measures (Split-Plot) with post hoc Bonferroni analysis was used to compare the differences between the conditions and the level of significance was set at p <0.05. The results in the present study on mat condition can be classified as very light exercise with energy cost values of 1.9 ?? 0.2 METs and in the equipment condition with values of 2.6 ?? 0.3 METs. Likewise, have found a value of 1.9 Kcal/min-1 on the mat session, and 2.6 Kcal/min-1 on the equipment session. The VO2 remained elevated after exercise for both sessions, with significant values only for the mat (pre 3.1 ?? 0.8, post 4.3 ?? 0.7). The blood lactate concentration showed no significant increase after the end of the solo sessions and apparatus. HR analysis in this study confirmed the low intensity of Pilates sessions, average HR solo session remained at 53% of maximum heart rate, and the device session 49%. Systolic and diastolic BP did not present higher values in relation to the rest. It is suggested that a training program using this protocol with exercises based on the Pilates method is a choice for the initial stage of intervention in sedentary individuals, the elderly or those with cardiovascular disease. / Os exerc??cios de Pilates t??m ganhado espa??o como uma modalidade de exerc??cio n??o s?? na reabilita????o, mas tamb??m para melhora da sa??de geral. No entanto, n??o h?? relatos na literatura quanto ao custo energ??tico dos exerc??cios baseados no m??todo, em especial quando se utiliza solo ou aparelho. O objetivo do estudo foi analisar e comparar o custo energ??tico, a FC e a PA nas sess??es de Pilates no solo e no aparelho em mulheres saud??veis. Para isso, foram selecionadas 18 volunt??rias que realizaram duas sess??es de Pilates (solo e aparelho), em dias distintos. As vari??veis analisadas foram VO2, por meio da calorimetria indireta, e posterior c??lculo do custo energ??tico em METs e Kcal/min-1, lactato sangu??neo, FC e PA. ANOVA para medidas repetidas (Split-Plot) com an??lise post hoc e Bonferroni foi utilizado para comparar as diferen??as entre as condi????es, e o n??vel de signific??ncia adotado foi p <0,05. A sess??o realizada no presente estudo na condi????o solo pode ser classificada como exerc??cio de intensidade muito leve com valores de custo energ??tico de 1,9 ?? 0,2 METs e a condi????o aparelho como leve, com valores de 2,6 ?? 0,3 METs. Da mesma forma, foi encontrado um valor de custo de energia de 1,9 Kcal/min-1 na sess??o solo e 2,6 Kcal/min-1 na sess??o aparelho. Foi observado que o VO2 permaneceu elevado ap??s o exerc??cio para ambas as sess??es, com valores significativos apenas para o solo (pr?? 3,1 ?? 0,8; p??s 4,3 ?? 0,7). A concentra????o sangu??nea de lactato n??o apresentou aumento significativo ap??s o t??rmino das sess??es solo e aparelho. A an??lise da FC neste estudo reafirmou a baixa intensidade das sess??es de Pilates, a FC m??dia da sess??o solo permaneceu em 53% da FCm??x, e a sess??o aparelho a 49% A PA sist??lica e diast??lica n??o apresentaram maiores valores em rela????o ao repouso. Sugere-se que um programa de treinamento utilizando este protocolo com os exerc??cios baseados no m??todo Pilates seja uma escolha para o est??gio inicial de interven????o em indiv??duos sedent??rios, idosos ou aqueles que apresentam doen??as cardiovasculares.
16

The coordination and implementation of the Affordable Care Act in Texas : Medicaid eligibility and the environmental context

Daneel, Asha Staudt 29 November 2012 (has links)
The Affordable Care Act (ACA) seeks to increase the low-income population’s access to health care coverage by expanding Medicaid eligibility and providing subsidies to individuals meeting certain income thresholds. The citizens of Texas would benefit greatly from the ACA provisions, as the state offers limited opportunities for individuals to access insurance, evidenced by the 6.3 million residents without health care coverage. But political leaders in Texas have a long-standing commitment to limited government, low taxes, and states’ rights in a federal system of government. In the 1990s, Texas legislators, with bipartisan support, laid the groundwork over the last decade for the minimal, yet significant preparations that administration used to coordinate ACA implementation. Yet legislators’ commitment to limited government and states’ rights placed additional constraints on the ability of the Texas Health and Human Services Commission (HHSC) to implement ACA provisions by refusing to utilize the 82nd legislative session to prepare the state for impending deadlines. Instead, administrators developed an interagency effort, the Eligibility Modernization Project (EMP), to streamline eligibility determinations and increase clients’ access to information and services. EMP’s initiatives mirror ACA provisions, but also seeks to achieve policy goals that both Republican and Democratic legislators support, such as providing effective and efficient eligibility determinations. Nevertheless, legislators and administrators must go beyond EMP’s efforts to adequately prepare the eligibility system for impending ACA deadlines. Policy recommendations include further streamlining and integrating the health subsidy system with a state-based health insurance exchange, increasing access to coverage by expanding Medicaid eligibility, adequately preparing the workforce for changes, and promoting long-term planning. These solutions will provide a sounder infrastructure for HHSC to prepare for ACA coordination and implementation, while increasing access to health care coverage for the low-income population. / text
17

Structure / Function Relationship of Archaeal Box C/D and H/ACA Proteins

Bosmeny, Michael 01 May 2016 (has links)
Ribonucleoprotein complexes are responsible for some of the post-transcriptional modifications of RNA that occur within the cell, including 2'-O-methylation and pseudouridylation. These modifications contribute, among other things, to RNA folding, inhibition of degradation, and general cellular viability. In this study, we identify residues within the proteins of these complexes that are important to the functioning of the Box C/D and Box H/ACA complexes. Candidates were selected based on previous work and mutant versions of the proteins were introduced in-vivo. Assays were done to determine the functionality of the mutant complex. This work is divided into three parts, focused on the three proteins investigated. The first part is concerned with Nop5, a protein in the Box C/D RNP complex. Nop5 is known to interact with all other proteins and RNAs in the complex, and is believed to serve a primarily structural role, aligning the other components. Mutagenesis study of suspected significant amino acids in this protein showed that it is difficult to disrupt the operation of Nop5 with single changes, but is possible with more extensive mutation. The second part concerns Fibrillarin, the catalytic protein of the Box C/D ribonucleoprotein complex. Previous mutagenesis work identified several important amino acids involved with AdoMet transfer and complex formation. The methylation ability of these mutant complexes were further examined in this work by confirming that the same modification, or lack thereof, occurred at a second rRNA position. The final part of this work is about Nop10, part of the Box H/ACA complex. This work is only preliminary, but begins the process of testing suspected essential amino acids in the structure.
18

Evid?ncias de validade do Millon Behavioral Medicine Diagnostic na avalia??o de ader?ncia terap?utica em pacientes com insufici?ncia card?aca cr?nica

Carvalho, Maria Fernanda de Oliveira 12 August 2014 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2015-12-14T21:16:06Z No. of bitstreams: 1 MariaFernandaDeOliveiraCarvalho_DISSERT.pdf: 1141209 bytes, checksum: 65f01a0777b8abd70e29becdbcc85f9f (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2015-12-15T20:22:06Z (GMT) No. of bitstreams: 1 MariaFernandaDeOliveiraCarvalho_DISSERT.pdf: 1141209 bytes, checksum: 65f01a0777b8abd70e29becdbcc85f9f (MD5) / Made available in DSpace on 2015-12-15T20:22:06Z (GMT). No. of bitstreams: 1 MariaFernandaDeOliveiraCarvalho_DISSERT.pdf: 1141209 bytes, checksum: 65f01a0777b8abd70e29becdbcc85f9f (MD5) Previous issue date: 2014-08-12 / A insufici?ncia card?aca cr?nica (ICC) ? a via final comum da maioria das doen?as que acometem o cora??o, sendo respons?vel por elevados ?ndices de mortalidade e de interna??o hospitalar, bem como redu??o expressiva da qualidade de vida das pessoas afetadas. Interven??es com vistas ? otimiza??o da ades?o do paciente ao seu regime m?dico, e melhora do comportamento de autocuidado, t?m se mostrado eficazes na preven??o de interna??es n?o planejadas e melhora do resultado em pacientes, entretanto, estudos t?m mostrado a problem?tica da n?o ader?ncia, e alguns instrumentos psicol?gicos vem sendo utilizados para mostrar que tra?os indicam dificuldades com a ades?o ao tratamento. Tendo isso em vista, o objetivo deste trabalho constitui avaliar as evid?ncias de validade do Millon Behavioral Medicine Diagn?stic (MBMD) em popula??o de pacientes com ICC. Participaram do estudo indiv?duos com ICC, dos sexos masculino e feminino, com faixa et?ria entre 18 e 85 anos, atendidos em hospital de refer?ncia da cidade de Natal-RN. Um total de 120 pacientes responderam, al?m do MBMD, outro question?rio estruturado com itens referentes a aspectos sociodemogr?ficos e cl?nicos. Os resultados indicaram que o par?metro de fidedignidade do MBMD mostrou-se satisfat?rio, demonstrando a const?ncia dos resultados para avalia??es realizadas com o instrumento em quest?o. Em se tratando da popula??o pesquisada, p?de-se verificar que a doen?a foi mais prevalente no sexo masculino, mas as mulheres apresentaram as maiores m?dias nos indicadores referentes a h?bitos negativos de sa?de e humor deprimido. Os mais jovens e aqueles que n?o tinham companheiro apresentaram as maiores m?dias em grupos de itens que tratavam de sentimentos de tristeza e des?nimo. N?o foram verificadas diferen?as relacionadas a h?bitos negativos de sa?de e ader?ncia problem?tica entre pacientes em classes funcionais diferentes. Mais estudos nessa linda de pesquisa, com popula??es maiores e de outras regi?es do pa?s, s?o necess?rios no intuito de amplia??o dos dados aqui apresentados. / Chronic heart failure (CHF) is the final common pathway of most diseases affecting the heart, being responsible for a high level of mortality and hospitalization, as well as significant reduction in quality of life of those affected. Interventions that claim to optimize patient adherence to their medical regimen, and improve self-care behavior, have proven effective in preventing unplanned admissions and improves the outcome for patients, however, studies have shown the problem of non-adherence, and some psychological instruments have been used to show that traces indicate difficulties with treatment adherence. Having shown this, the aim of this work is to evaluate the evidence of validity of the Millon Behavioral Medicine Diagnostic (MBMD) in a population of patients with CHF. The study included individuals with CHF, males and females, between the age of 18 and 85 years, treated in a reference hospital in the city of NatalRN. A total of 120 patients answered, in addition to the MBMD, another questionnaire structured with sociodemographic aspects and clinical itens. The results indicated that the parameter of the MBMD reliability was satisfactory the most of extracted factors, and some scale. In terms of the population studied, we could verify that the disease was more prevalent in men, but women had the highest average in indicators related to negative health habits and depressed mood. Younger pacients and those who had no partner had the highest averages in groups of items that dealt with feelings of sadness and discouragement. Hasn?t been observed differences related to negative health habits and problematic adherence among patients in different functional classes. More studies in this research line, with a larger population and from other regions of the country, are needed in order to expand the data presented here
19

Influ?ncia de mudan?as de fase no ciclo claro-escuro sobre o controle auton?mico card?aco de ratos

Cavalcanti, Rafael Limeira 30 June 2014 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-03-10T20:33:58Z No. of bitstreams: 1 RafaelLimeiraCavalcanti_DISSERT.pdf: 4718183 bytes, checksum: 0aadd04ecab41e4f64628ed88c21940e (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-03-17T19:43:11Z (GMT) No. of bitstreams: 1 RafaelLimeiraCavalcanti_DISSERT.pdf: 4718183 bytes, checksum: 0aadd04ecab41e4f64628ed88c21940e (MD5) / Made available in DSpace on 2016-03-17T19:43:11Z (GMT). No. of bitstreams: 1 RafaelLimeiraCavalcanti_DISSERT.pdf: 4718183 bytes, checksum: 0aadd04ecab41e4f64628ed88c21940e (MD5) Previous issue date: 2014-06-30 / O sistema circadiano possui proje??es neurais para o Sistema Nervoso Aut?nomo (SNA), interferindo diretamente na modula??o simp?tico-vagal do sistema cardiovascular. Perturba??es no sistema circadiano, como por exemplo as mudan?as de fase no ciclo claro-escuro (CE), tem sido relacionadas ao risco de surgimento de doen?as cardiovasculares, devido ao aumento do t?nus simp?tico card?aco e redu??o dos intervalos RR (iRR). Objetivo: Investigar a intera??o entre o Sistema de Temporiza??o Circadiano e o controle auton?mico card?aco de ratos. Materiais e m?todo: Foram utilizados 18 ratos Wistar (?; idade=139,9 ? 32,1 dias; peso=219,5 ? 16,2 g), alocados em tr?s grupos distintos: Controle (GC), Atraso de fase em 6h (GAT) e Avan?o de fase em 6h (GAV). Foram exclu?dos tr?s animais durante a coleta de dados (GC/GAT/GAV - n=5 cada).Tel?metros foram implantados cirurgicamente em cada animal, para aquisi??o cont?nua de sinais de eletrocardiograma - ECG (dura??o de 21 dias no GC e 28 dias no GAT/GAV). Foi estabelecido um ciclo CE 12h:12h, com in?cio do claro ?s 18:00h e in?cio do escuro ?s 06:00h. Os animais do GC permaneceram no mesmo ciclo durante todo o per?odo experimental, enquanto que, no 14? dia de registro, o GAT e o GAV foram submetidos a um atraso e um avan?o em 6h, respectivamente. Durante todo o per?odo experimental, registrou-se a Atividade Locomotora (AL), a m?dia da Frequ?ncia Card?aca (mFC) e as vari?veis relacionadas aos iRR [m?dia dos iRR (mRR), SDNN, RMSSD, BF, AF e raz?o BF/AF]. Todos os dados foram analisados em blocos de 3 e 7 dias, quanto a presen?a de ritmo circadiano, valores do Cosinor - mesor, amplitude e acrofase (teste t pareado), rela??o de fase, diferen?as entre claro e escuro (teste t independente), m?dias a cada 30 minutos ao longo de cada s?rie temporal (ANOVA two way com post hoc de Bonferroni). Os dados do bloco B1, M1 e M2 do GC serviram como valores de refer?ncia para as compara??es entre os blocos de an?lise do GAT/GAV. Resultados: Observou-se ritmicidade circadiana nas vari?veis de AL, mRR e mFC(p<0,01). Verificou-se rela??o de fase entre as vari?veis mRR/mFC e a AL nos tr?s grupos, sendo menos est?vel no GAV. No GC, n?o foram encontradas diferen?as significativas entre os blocos, em nenhuma das an?lises(p>0,05). Nos blocos de 7 dias dos grupos experimentais, verificou-se redu??o significativa de mRR(p=0,04) e mFC(p=0,03) no GAT, e de AF(p=0,02) no GAV; al?m disso, entre os blocos de 3 dias, observou-se um aumento significativo de BF/AF(p=0,04) no GAT, bem como das vari?veis mRR(p=0,03), SDNN(p=0,04), RMSSD(p=0,04), BF(p=0,01) e AF(p=0,02) no GAV. Constatou-se que as diferen?as entre as m?dias da mRR, mFC e AL nas fases de claro e escuro n?o foram significativas ap?s as mudan?as de fase em alguns dos blocos analisados nos grupos experimentais. N?o foram encontrados resultados significativos na compara??o das vari?veis r?tmicas a cada 30 minutos ao longo de toda a s?rie experimental, exceto pela diminui??o significativa de mRR no meio da fase do escuro em B2 e no in?cio da fase de claro em B3 (p<0,01). Conclus?o: os avan?os e atraso de fase (6h) alteraram o controle auton?mico card?aco nos grupos experimentais atrav?s da redu??o tempor?ria da VFC. Os avan?os de fase, aparentemente, tiveram maior influ?ncia negativa nesse processo, em rela??o aos atrasos de fase. / Introduction: The circadian system has neural projections for the Autonomic Nervous System (ANS), directly interfering with sympathetic-vagal modulation of the cardiovascular system. Disturbances in the circadian system, such as phase changes in light-dark cycle (LD), has been related to the risk of development of cardiovascular diseases due to increased sympathetic tone and reduction o Heart Rate Variability (HRV - RR intervals). Purpose: Investigate the interaction between Circadian Timing System and cardiac autonomic control in rats. Materials and methods: We used 18 Wistar rats (?, age = 139.9 ? 32.1 days, weight = 219.5 ? 16.2 g), divided into three distinct groups: Control (CG), phase delay of 6h (GDe) and phase advance of 6h (GAd). Three animals were excluded during data collection (CG/GDe/GAd - n=5). Telemeters were surgically implanted in each animal for continuous acquisition of electrocardiographic (ECG) signals (duration of 21 days in the CG and 28 days in GDe/ GAd). A LD cycle was established 12h: 12h, beginning of light at18:00h and dark at 06:00h. The animals remained in the same CG LD cycle throughout the experimental period, while, on the 14th day of registration, the GDe and GAd underwent a delay and an advance in 6h, respectively. Throughout the experimental period, the locomotor activity (LA), the mean heart rate (mHR) and variables related to iRR [mean RR (mRR), SDNN, RMSSD, LF, HF and LF/ HF ratio ] were recorded. All data were analyzed in blocks of 3 and 7 days, for the presence of circadian rhythm, values of Cosinor - mesor, amplitude and acrophase (paired t test), phase relationship, differences between light and dark (t test independent), averages every 30 minutes along each time series (two-way ANOVA with post hoc Bonferroni). The data block B1,M1 and M2 in CG served as benchmarks for comparisons between series of analysis of the GAT/GAV. Results: We observed circadian rhythmicity in the variables LA, mRR and mFC(p<0.01). mRR and mFC showed phase relationship with the LA in all three groups, being less stable in GAd. In the CG, no significant differences between blocks were found in any of the analyzes(p>0.05). Among the 7 day blocks, there was a significant reduction in mRR(p=0.04) and mFC(p=0.03) in GDe and significant reduction in HF mean(p=0.02) in GAd; and between 3 day blocks, a significant increase of LF/HF(p= 0.04) in the GDe; besides mRR(p=0.03), SDNN(p=0.04), RMSSD (p=0.04), LF (p=0.01) and HF(p=0.02) significant increase in the GAd. It was found that the differences between the means of the mRR, LA and mFC in light and dark phases were not significant after phase changes in some of the blocks/moments (GDe and GAd). No significant results were found when comparing rhythmic variables means every 30 minutes over the blocks, except for a significant decrease in mRR at the middle of the dark phase (B2) and the start of light phase (B3) - (p<0.01). Conclusion: phase advances and delays (6h) altered cardiac autonomic control in the experimental groups by temporarily HRV decrease. Phase advances apparently had greater negative interference in this process, in relation to the phase delays.
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Preditores e consequ??ncias da fibrose mioc??rdica na doen??a de chagas cr??nica

Rabelo, M??rcia Maria Noya 20 December 2017 (has links)
Submitted by carla santos (biblioteca.cp2.carla@bahiana.edu.br) on 2018-08-23T20:46:07Z No. of bitstreams: 1 Tese MARCIA M NOYA RABELO.pdf: 18290205 bytes, checksum: 51c309d0716ddaa09940490e86210e9d (MD5) / Approved for entry into archive by JOELMA MAIA (ebmsp-bibliotecacp2@bahiana.edu.br) on 2018-08-24T14:28:37Z (GMT) No. of bitstreams: 1 Tese MARCIA M NOYA RABELO.pdf: 18290205 bytes, checksum: 51c309d0716ddaa09940490e86210e9d (MD5) / Made available in DSpace on 2018-08-24T14:28:37Z (GMT). No. of bitstreams: 1 Tese MARCIA M NOYA RABELO.pdf: 18290205 bytes, checksum: 51c309d0716ddaa09940490e86210e9d (MD5) Previous issue date: 2017-12-20 / Fundamento: estudos sugerem o papel da fibrose mioc??rdica como substrato para o desenvolvimento e progress??o da disfun????o ventricular, arritmia e morte em portadores da doen??a de Chagas. No entanto, poucos dados s??o dispon??veis quanto ao padr??es e patog??nese desta vari??vel a fim de oferecer possibilidades de preven????o e desenvolvimento de terapias corretivas. Objetivos: (1) avaliar a acur??cia da medida plasm??tica da Galectina-3 na determina????o da fibrose mioc??rdica; (2) descrever a frequ??ncia dos polimorfismos dos genes CLDN-1, LGALS3, SOCS3, IL-28B, CCL5 nas diferentes formas cl??nicas da doen??a; (3) descrever a frequ??ncia e extens??o da fibrose mioc??rdica avaliada por resson??ncia magn??tica card??aca em pacientes da foram indeterminada e (4) testar a hip??tese de que a analise da fun????o ventricular com o uso da t??cnica de Speckle Tracking Strain ?? capaz de predizer fibrose em indiv??duos com doen??a de Chagas. Metodologia: estudo observacional, de corte transversal, incluindo pacientes consecutivamente admitidos no ambulat??rio de Chagas e Insufici??ncia Card??aca do Hospital S??o Rafael, no per??odo de janeiro de 2012 a dezembro de 2013, com doen??a de Chagas confirmada por 02 testes sorol??gicos positivos. Todos os indiv??duos realizaram exames bioqu??micos, eletrocardiograma de 12 deriva????es, raio X t??rax, Holter 24h, teste ergom??trico, ecocardiograma com doppler, resson??ncia magn??tica card??aca (RMC) al??m de mensura????o plasm??tica de galtecina-3, NT-ProBNP e citocinas. Resultados: foram avaliados 61 indiv??duos portadores da doen??a de Chagas, 56% sexo feminino, 58??? 9 anos, sendo 17 indiv??duos na forma indeterminada, 16 na forma card??aca sem disfun????o do ventr??culo esquerdo e 28 na forma card??aca com disfun????o do ventr??culo esquerdo. Realce tardio foi identificado em 37 pacientes (64%) ?? resson??ncia magn??tica card??aca, com percentual de ??rea acometida por fibrose de 9,4% (IIQ:2,4-18,4). Em rela????o ao Objetivo 1 (n=61): n??o foi observado associa????o entre a concentra????o s??rica de Galectina-3 e a extens??o de fibrose mioc??rdica evidenciada ?? RMC nas diferentes formas cl??nicas da doen??a. Assim como, foi documentado no Objetivo 2 (n=55) que o polimorfismo do LGALS3 tamb??m n??o ?? capaz de predizer fibrose nas diferentes apresenta????es fenot??picas na doen??a. Seguindo adiante, quanto ao Objetivo 3 (n=61) foi demonstrado que a presen??a de fibrose na forma indeterminada tem frequ??ncia e extens??o semelhante ?? forma card??aca sem disfun????o do ventr??culo esquerdo; e no Objetivo 4 (n=58) que o uso da t??cnica de Speckle Tracking Strain n??o tem valor incremental ?? fra????o de eje????o convencional para a predi????o de fibrose mioc??rdica em portadores da doen??a de Chagas. Conclus??es: em pacientes com doen??a de Chagas n??o h?? rela????o direta entre o grau de fibrose e o n??vel s??rico da Galectina-3, negando um papel preditor dessa mol??cula em rela????o a fibrose mioc??rdica, assim como, a altera????o polim??rfica do gene da Gal-3 n??o prediz fibrose nas diferentes apresenta????es fenot??picas da doen??a. Al??m disso, as formas indeterminada e card??aca sem disfun????o assemelham-se entre si quanto ao percentual de acometimento por fibrose avaliado pela RMC, n??o havendo valor incremental do uso da t??cnica de Speckle Tracking Strain ?? fra????o de eje????o convencional para avalia????o de fibrose subcl??nica.

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