956 resultados para João Antônio 1937-1996 Biografia


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SOCS3 is an inducible endogenous negative regulator of JAK/STAT pathway, which is relevant in inflammatory conditions. We used a model of LPS-induced periodontal disease in rats to correlate SOCS3 expression with the inflammatory status. In vitro we used a murine macrophage cell line to assess the physical interaction between SOCS3 and STAT3 by coimmunoprecipitation. 30 ug of LPS from Escherichia coli were injected in the gingival tissues on the palatal aspect of first molars of the animals 3x/week for up to 4 weeks. Control animals were injected with the vehicle (PBS). The rats were sacrificed at 7, 15, and 30 days. Inflammation and gene expression were assessed by stereometric analysis, immunohistochemistry, RT-qPCR, and western blot. LPS injections increased inflammation, paralleled by an upregulation of SOCS3, of the proinflammatory cytokines IL-1β, IL-6, and TNF-and increased phosphorylation of STAT3 and p38 MAPK. SOCS3 expression accompanied the severity of inflammation and the expression of proinflammatory cytokines, as well as the activation status of STAT3 and p38 MAPK. LPS stimulation in a macrophage cell line in vitro induced transient STAT3 activation, which was inversely correlated with a dynamic physical interaction with SOCS3, suggesting that this may be a mechanism for SOCS3 regulatory function. © 2013 João Antônio Chaves de Souza et al.

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Este trabalho tem por objetivo apresentar um estudo sobre cartas de escritores. Este texto é o resultado de uma pesquisa realizada em minicurso oferecido durante o V Encontro do CEDAP, quando abordada a correspondência dos seguintes escritores: Mário de Andrade, Manuel Bandeira, João Antônio, Ana Cristina César e Lewis Carroll.

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The object of this work was to study the dynamics of evaporation in the Itumbiara reservoir, located in Central Brazil, using MODIS-derived water surface temperature (product MOD11A1) and meteorological data acquired over the water surface. The evaporation rates were derived from latent heat flux, estimated through a mass transfer model. The estimates were carried out for the period between 1/1/2010 and 31/12/2010. The results showed that evaporation rate tends to increase from January to September and then decrease from September to December. The evaporation rate reached values near 20 mm day-1 in Itumbiara reservoir during the dry season in 2010. The mean evaporation rate for the wet season was 3.66 mm day-1 and 8.25 mm day-1 for the dry season. The total water volume evaporated from Itumbiara reservoir during 2010 was estimated at about 1.7 billion m³ (2,300 mm) which represents 10% of total reservoir volume. The results suggest that advection is the main transport mechanism which drives the evaporation in Itumbiara. The convective processes contribute secondarily to evaporation in Itumbiara reservoir.

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The association of mandibular distal extension removable partial dentures with an osteointegrated implant is a treatment option at hasn't been fully explored by modern rehabilitation dentistry yet. The objective of this study is to evaluate, by means of the bidimensional method of finite elements, the distribution of tension on the structures supporting the distal extension removable partial denture (DERPD), associated to a 10.0 x 3.75 mm osteointegrated implant with an ERA retention system, in alveolar ridges of different shapes. Eight models were created, representing, from a sagittal perspective: Model A (MA) – a half arch with a horizontal ridge without posterior support, with the presence of the lower left canine, and a conventional DERPD, with metallic support in the incisal aspect of this canine, as replacement for the first and second pre-molars and the first and second molars of the lower left half arch; Model B (MB) – similar to MA, but different because of the presence of a 3.75 x 10.00 mm implant with an associated ERA retention system in the posterior region of the DERPD base; Model C (MC) - similar to MA, however with a distally ascending ridge format; Model D (MD) – similar to MC, but different because there is an implant associated to a retention system; Model E (ME) - similar to MA, however with a distally descending ridge format; Model F (MF) – similar to ME, but ditfferent in the sense that there is an implant with an associated ERA retention system; Model G (MG) – similar to MA, however with a distally descending-ascending ridge format; Model H (MH) – similar to MG, but different in the sense that there is an implant with an associated ERA retention system. The finite element program ANSYS 9.0 was used to load the models with vertical forces of 50 N, on each cuspid tip. The format of distal descending edge (ME and MF) was that presented worse results, so in the models with conventional RPD as in the models with RPD associated to the implant and ERA system of retention, for the structures gingival mucosa and tooth support. 1) the distally descending ridge presented the most significant stress in the model with the conventional RPD (ME) or with a prosthesis associated to an implant (MF) and 2) the horizontal ridge (MB) provided more relief to the support structures, such as the tooth and the spongy bone, when there was an implant associated to an ERA retention system. The incorporation of the implants with the ERA system retention, in the posterior area of the toothless edge, it promotes larger stability and retention to PPREL, improving the patient's masticatory acting and, consequently, its comfort and function.

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The rehabilitation with mandibular distal extension removable partial dentures (DERPD) is complex and the use of implants has been improving the functioning of this approach. The insertion bony level around of the last support tooth is an aggravating factor, since it can harm the longevity of the treatment. Thus, the aim of this research was to evaluate the displacement tendency of a mandibular DERPD associated to an implant, with different insertion bony levels and different connections between the RPD and the support tooth, by finite element analysis. Eight models were made: MA - DERPD, incisal rest, no bony loss; MB - DERPD, distal plate, no bony loss; MC - DERPD, incisal rest, no bony loss, with implant and ERA system; MD - DERPD, distal plate, no bony loss, with implant and ERA system; ME - DERPD, incisal rest, bony loss; MF - DERPD, distal plate, bony loss; MG - DERPD, incisal rest, bony loss, with implant and ERA system; MH - DERPD, distal plate, bony loss, with implant and ERA system. Loads of 50 N in each peak were applied. Displacement maps were obtained and showed that implant favors this association and the bony loss harms the prognostic of the prosthesis. It is concluded that: the introduction of the implant with ERA system reduced the displacement tendency of the tooth and supporting structures; introduction of distal plate reduced the movement tendency of the support tooth; the decrease of the periodontal support didn't influence significantly the displacement tendency of the models with distal plate distal, but it influenced the models with distal incisal rest.

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Background: The repair of large bone defects is a major orthopedic challenge because autologous bone grafts are not available in large amounts and because harvesting is often associated with donor-site morbidity. Considering that bone marrow stromal cells (BMSC) are responsible for the maintenance of bone turnover throughout life, we investigated bone repair at a site of a critically sized segmental defect in sheep tibia treated with BMSCs loaded onto allografts. The defect was created in the mid-portion of the tibial diaphysis of eight adult sheep, and the sheep were treated with ex-vivo expanded autologous BMSCs isolated from marrow aspirates and loaded onto cortical allografts (n = 4). The treated sheep were compared with control sheep that had been treated with cell-free allografts (n = 4) obtained from donors of the same breed as the receptor sheep. Results: The healing response was monitored by radiographs monthly and by computed tomography and histology at six, ten, fourteen, and eighteen weeks after surgery. For the cell-loaded allografts, union was established more rapidly at the interface between the host bone and the allograft, and the healing process was more conspicuous. Remodeling of the allograft was complete at 18 weeks in the cell-treated animals. Histologically, the marrow cavity was reestablished, with intertrabecular spaces being filled with adipose marrow and with evidence of focal hematopoiesis. Conclusions: Allografts cellularized with AOCs (allografts of osteoprogenitor cells) can generate great clinical outcomes to noncellularized allografts to consolidate, reshape, structurally and morphologically reconstruct bone and bone marrow in a relatively short period of time. These features make this strategy very attractive for clinical use in orthopedic bioengineering

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La città di São Paulo è la più grande megalopoli dell’emisfero sud. Alle sue dimensioni esagerate corrisponde una complessità sociale che è difficile afferrare e comprendere nella sua interezza. Questo lavoro analizza come la letteratura brasiliana contemporanea affronti il problema della rappresentazione della megalopoli. Allo stesso tempo, ci si propone di indagare in che modo la scrittura risenta del contesto in cui viene prodotta mettendo in relazione la forma caotica e dispersiva della città con la frammentazione riscontrata nelle opere letterarie. In particolare, sono state analizzate le opere di João Antônio e Luiz Ruffato in cui la città appare non solo come scenario delle vicende narrate, ma come protagonista della narrazione. Nei primi due capitoli sono stati affrontati temi di carattere urbanistico, politico, economico e sociale per descrivere alcune delle dinamiche che nel secolo scorso hanno interessato São Paulo, trasformando la città da piccolo centro di provincia in enorme megalopoli. Privilegiando un approccio di tipo culturale, nel descrivere il processo storico sono stati presi in considerazione testi letterari, film e documenti fotografici oltre che contributi provenienti dalla sociologia e da altre aree delle scienze umane. Quando sono state trattate questioni che hanno interessato l’intero Brasile, come l’abolizione della schiavitù e l’insorgere negli ultimi decenni del preoccupante fenomeno della violenza urbana, è stato necessario uscire dalla dimensione locale per accennare al Paese come Stato nazionale. In questi casi, si è cercato di non cadere nella trappola di un discorso che rappresenti la realtà brasiliana come omogenea. Piuttosto, attraverso una prospettiva critica, si è cercato di far emergere alcune delle molteplici sfaccettature del Brasile, dando particolare rilievo a quelle voci che nel discorso ufficiale sono state emarginate. Lo stesso vale per São Paulo. La tesi sostenuta in questo lavoro è che non esista una São Paulo unica né unitaria; esiste una città diversa a seconda dell’angolo da cui la si osserva. Ciò diventa evidente nelle opere letterarie analizzate nel III capitolo: i racconti di João Antônio, il romanzo di Luiz Ruffato, le mini cronache raccolte per strada di Fernando Bonassi. Senza ambire a un’impossibile visione d’insieme, ognuna di queste opere mette in scena frammenti della realtà paulistana e crea una cartografia propria della città.

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Compete aos agentes que concebem os edifícios, bem como aos legisladores e aos promotores, dotá-los com o máximo possível de tecnologias passivas que permitam ao utilizador economizar, sem no entanto perder conforto nem salubridade. O presente estudo consiste num trabalho de revisão bibliográfica e de investigação experimental com vista à avaliação do comportamento dinâmico de paredes de alvenaria de tijolo térmico. Aferiu-se o desempenho térmico deste tipo de paredes e a viabilidade da sua utilização essencialmente numa perspetiva da redução dos consumos energéticos e de garantia do conforto térmico e salubridade nos edifícios. Os tijolos térmicos estão cada vez mais a ser introduzidos na construção devido ainda à simplicidade na construção e a possível eliminação/redução do material isolante. Neste trabalho construiu-se uma célula de teste com paredes constituídas por este tipo de tijolo, o Bloco ThermoPrélis, cedido pela empresa PRELIS Lda. Assim, mediu-se o desempenho térmico do mesmo em condições reais, em períodos nas estações de primavera e do verão. Os resultados experimentais mostram claramente as vantagens da construção com este tipo de tijolo, que apresenta um atraso térmico de 7 a 8 horas e um amortecimento da amplitude térmica no ambiente interior bastante significativo, tirando partido do mecanismo físico associado à inércia térmica. Em termos de custos, a construção com tijolo térmico apresenta vantagens, quando comparado com a construção típica em parede dupla com isolamento térmico na caixa-de-ar.

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Mestrado em Controlo da Gestão e dos Negócios

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Trabalho de Dissertação para obtenção do grau de Mestre em Engenharia Civil na Área de Especialização em Estruturas

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Relatório de Estágio para obtenção do grau de Mestre em Engenharia Civil

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The aim of this study was to evaluate the effective dose received by patients undergoing CCTA in both acquisition methods in the period June 1st to October 30th, 2013. Data collection was performed at the Clínica Sabedotti in Ponta Grossa/PR, with General Electric Equipment VCT XT, 64 detections lines. The effective dose was measured from the thirty cases randomly selected of Picture Archival and Communication System – PACS, reported by Dose Lenght Product (DLP) equipment for each examination and the conversion factor (EDLP) set by the European Commission for cardiac region (EDLP = 0.014). The results showed significant differences in radiation dose delivered to the patient according to the employee acquisition method, Retrospective or Prospective of ECG.

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The objective of this study was to analyze the electrochemical and acid-base disorders in high performance athletes during the World Karate Championship hosted by the WKO (World Karate Organization) in 2014. In this study 19 male athletes were analyzed (age 34 ± 8), black belts and with over 5 years of experience in the sport. Capillary blood samples from the digital pulp of the finger were collected in three stages: rest, 5 minutes after and 10 minutes after fighting (kumite). The sample was analyzed using blood gas analyzer GEM Premier 3000, using the parameters pH, Na+, K+, Ca2+, lactate e HCO3−. The values related to acid-base disturbance presented statistical differences (p <0.05) in most of the collected moments. The lactate levels found were 2.77 ± 0.97mmol / L in rest, 6.57 ± 2.1 for 5 minutes after and 4.06 ± 1.55 for 10 minutes after combat. The samples collected for the electrolytic markers showed no statistical differences in their values (p <0.05). Through the data collected, we conjecture that the sport can be characterized as a high-intensity exercise and with a predominance of the glycolytic system. The analysis of acid-base disturbance is an efficient method to assist in the control of training loads.

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A Gross Motor Function Measure (GMFM) é a medida de ouro para avaliar alterações na função motora ao longo do tempo ou em resposta a uma intervenção em crianças com Paralisia Cerebral (PC) (Russell D. , Rosenbaum, Avery, & Lane, 2002). Uma das barreiras à utilização mais frequente da GMFM é o seu tempo de administração, que dura entre 40 a 60 minutos. Para responder à necessidade de versões mais reduzidas da GMFM mas sem perder o seu carácter discriminativo e altamente sensível à mudança, foram publicadas as versões Gross Motor Function Measure- Item Sets (GMFM-66 IS) e a Gross Motor Function Measure Basal and Ceiling (GMFM-66-B&C), tornando a avaliação da função motora menos morosa, e assim melhorando a sua aplicabilidade. A GMFM-66 IS baseia-se num algoritmo para determinar quais os itens a serem avaliados e a GMFM-66 B&C tem como abordagem os efeitos de chão e teto de acordo com as idades e níveis do Sistema de Classificação da Função Motora Grosseira (SCFMG) (Brutton & Bartlett, 2011). O objetivo deste estudo foi criar as versões portuguesas da GMFM-IS e GMFM-B&C. Tratou-se de um estudo de natureza metodológica, descritivo, longitudinal em crianças com PC, dividido em duas fases: 1. Tradução e adaptação cultural e linguística da GMFM-66 IS e da GMFM-66 B&C; 2. Estudo de validação com análise da fiabilidade (coerência interna, reprodutibilidade e fiabilidade inter-observador), validade e poder de resposta. A amostra em estudo foi constituída por 100 crianças com PC com idades compreendidas entre os 2 e os 12 anos, representativa de todos os 5 níveis do Sistema de Classificação da Função Motora Global. As versões portuguesas da GMFM-66-IS e da GMFM-66-B&C apresentam equivalência conceptual e semântica com as versões originais revelando fácil aplicabilidade. Demonstrou-se que as versões reduzidas portuguesas da GMFM apresentam muito boa consistência interna, com valores globais do Alfa de Cronbach de 0,998, muito boa concordância entre os avaliadores (ICC de 0,998 para a GMFM-66-B&C e de 0,999 para a GMFM-66-IS), e com valores de fiabilidade intra-observador excelentes (ICC de 0,999 para a GMFM-66-B&C e de 1,000 para a GMFM-66-IS). Quanto ao poder de resposta os resultados não foram tão expressivos, provavelmente comprometidos por uma amostra demasiado pequena. As versões portuguesas da GMFM-66-IS e da GMFM-66-B&C revelaram ter características psicométricas adequadas à sua aplicação em PC, necessitando, no entanto, de mais investigação relativamente à sua capacidade de detetar mudança como resultado de intervenções.