Made available in DSpace on 2014-12-17T15:41:56Z (GMT). No. of bitstreams: 1 ManuellaKCR_DISSERT.pdf: 3952261 bytes, checksum: 56cf586893164ffedc3ec29beb8e775a (MD5) Previous issue date: 2010-08-31 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Were synthesized ferrites of NiZn on systems Ni0,5Zn0,5Fe2O4, the precursors citrate method. The decomposition of the precursors was studied by thermogravimetric analysis and spectroscopy in the infrared region, the temperature of 350?C/3h. The evolution of the phases formed after calcinations at 350?C/3h, 600, 1000 and 1100?C/2h was accompanied by X-ray diffraction using the Rietveld refinement method for better identification os structures formed. Was observed for samples calcined at different temperatures increased crystallinity with increasing calcination temperature, being observed for the samples calcined at 900 and 1100 ? C/2h was the precipitation of a secondary phase, the phase hematite. The ferrocarbonila of industrial origin was analyzed by X-ray diffraction and Rietveld for the identification of its structure. The carbonyl iron was added NiZn ferrite calcined at 350?C/3h, 600, 900, 1000 and 1100?C/2h to the formation of hybrid mixtures. They were then analyzed by Xray diffraction and Rietveld. The NiZn ferrite and ferrocarbonila as well as the hybrid mixtures were subjected to analysis of scanning electron microscopy, magnetic measurements and reflectivity. The magnetic measurements indicated that the ferrite, the ferrocarbonila, as well as hybrid mixtures showed characteristics of soft magnetic material. The addition of ferrocarbonila in all compositions showed an increase in the results of magnetic measurements and reflectivity. Best result was observed in the increase of the magnetization for the hybrid mixture of Ferrocarbonila / ferrite of NiZn calcined at 600?C/2h. The mixture Ferrocarbonila / ferrite calcined 1000?C/2h presented better absorption of electromagnetic radiation in the microwave / Foram sintetizadas ferritas de NiZn no sistema Ni0,5Zn0,5Fe2O4, pelo m?todo dos citratos precursores. A decomposi??o dos precursores foi estudada por an?lise termogravim?trica e espectroscopia na regi?o do infravermelho na temperatura de 350?C/3h. A evolu??o das fases formadas ap?s calcina??es a 350?C/3h, 600, 1000 e 1100?C/2h foi acompanhada por difra??o de raios X utilizando o refinamento de Rietveld para melhor identifica??o das estruturas formadas. Foi observado para as amostras calcinadas em diferentes temperaturas o aumento da cristalinidade com o aumento da temperatura de calcina??o, sendo verificado que para as amostras calcinadas a 900 e 1100?C/2h ocorreu a precipita??o de uma fase secund?ria, a fase hematita. A ferrocarbonila de proced?ncia industrial foi analisada por Difra??o de raios X e por Rietveld para a identifica??o de sua estrutura. A ferrocarbonila foi adicionada ? ferrita de NiZn calcinada a 350?C/3h, 600, 1000 e 1100?C/2h para a forma??o das misturas h?bridas. Em seguida foram analisadas por difra??o de raios X e por Rietveld. A ferrita de NiZn, a ferrocarbonila, assim como as misturas h?bridas foram submetidas ? an?lises de Microscopia Eletr?nica de Varredura, medidas magn?ticas e refletividade. As medidas magn?ticas indicaram que a ferrita, a ferrocarbonila, como tamb?m as misturas h?bridas apresentaram caracter?sticas de material magn?tico macios. A adi??o de ferrocarbonila em todas as composi??es indicou um aumento nos resultados de medidas magn?ticas e de refletividade. Foi verificado melhor resultado no aumento da magnetiza??o para a mistura h?brida de Ferrocarbonila/ferrita de NiZn calcinada 600?C/2h. A mistura Ferrocarbonila/ferrita calcinada 1000?C/2h apresentou melhor resultado absor??o da radia??o eletromagn?tica na faixa de microondas em rela??o ?s outras misturas

Made available in DSpace on 2014-12-17T14:07:02Z (GMT). No. of bitstreams: 1 PriscyllaCAGpdf.pdf: 2221940 bytes, checksum: 25a80df63d59147dc3816d52fcd0e65b (MD5) Previous issue date: 2009-08-21 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / This work main objective is to study the use of bricks in barium X-rays rooms in order to contribute to the optimization of shielding rooms diagnosis. The work was based on experimental measurements of X-ray attenuation (40 to 150 kV), using ceramic seal bearing the incorporation of barium sulfat (BaSO4). Different formulations were studied in three different firing temperatures and evaluated for incorporation in the ceramic body. The composition of 20% of barite processed at a temperature of 950 ? C showed better physical and mechanical properties, is considered the most suitable for the purpose of this work. Were produced bricks sealing composition formulated based on that presented the best technological features. These blocks were tested physically as a building material and wall protective barrier. Properties such as visual, deviation from the square, face flatness, water absorption and compressive strength were evaluated for all the blocks produced. The behavior of this material as attenuator for X-rays was investigated by experimental results which take into account mortar manufacturers barium through the different strains and compared with the reference material (Pb). The simulation results indicated that the ceramic block barium shows excellent properties of attenuation equivalence lead taking into account the energy used in diagnostic X-ray / Este trabalho tem por finalidade principal estudar a utiliza??o de blocos cer?micos baritados em salas de radia??o X, visando contribuir para a otimiza??o da blindagem de salas de diagn?stico. O trabalho foi baseado em medidas experimentais de atenua??o da radia??o X (40 a 150 kV), empregando material cer?mico de veda??o contendo a incorpora??o de sulfato de b?rio (BaSO4). Diferentes formula??es foram estudadas em tr?s temperaturas de queima diferentes e avaliadas as incorpora??es na massa cer?mica. A composi??o de 20% de barita processada a temperatura de 950?C, apresentou melhores propriedades f?sicas e mec?nicas, sendo considerada a mais adequada para a proposta deste trabalho. Foram produzidos blocos cer?micos de veda??o baseados na composi??o formulada que apresentou melhores caracter?sticas tecnol?gicas. Estes blocos foram testados fisicamente como material construtivo de parede e barreira protetora. Propriedades como caracter?sticas visuais, desvio com rela??o ao esquadro, planeza das faces, absor??o de ?gua e resist?ncia ? compress?o foram avaliadas para todos os blocos produzidos. O comportamento deste material como atenuador para a radia??o X foi investigado por meio de resultados experimentais que levaram em considera??o fabricantes de argamassas baritadas atrav?s das diferentes tens?es e comparado com o material de refer?ncia (Pb). Os resultados obtidos nas simula??es indicaram que o bloco cer?mico baritado demonstra ?timas propriedades de atenua??o em equival?ncia ao chumbo levando-se em conta as energias usadas em raios X diagn?stico

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-01-15T14:36:00Z No. of bitstreams: 1 WashingtonLuizFelixCorreiaFilho_TESE.pdf: 1284178 bytes, checksum: 828e65ac066df616cd79dbeb9443edfe (MD5) / Approved for entry into archive by Elisangela Moura (lilaalves@gmail.com) on 2016-01-25T13:43:02Z (GMT) No. of bitstreams: 1 WashingtonLuizFelixCorreiaFilho_TESE.pdf: 1284178 bytes, checksum: 828e65ac066df616cd79dbeb9443edfe (MD5) / Made available in DSpace on 2016-01-25T13:43:02Z (GMT). No. of bitstreams: 1 WashingtonLuizFelixCorreiaFilho_TESE.pdf: 1284178 bytes, checksum: 828e65ac066df616cd79dbeb9443edfe (MD5) Previous issue date: 2014-03-27 / Nesta tese foram utilizados tr?s diferentes modelos de regress?o, os Modelos Lineares Generalizados via regress?o log?stica e de Poisson e os Modelos Vetoriais Lineares Generalizados via distribui??o generalizada de valores extremos (MVLG-GEV) com o objetivo de detectar os extremos de precipita??o no Nordeste do Brasil. Inicialmente aplicaram-se os modelos de regress?o log?stica e de Poisson para identificar as intera??es entre os extremos de precipita??o e as demais vari?veis a partir das raz?es de chances e de riscos relativos. Constatou-se que a vari?vel indicadora da ocorr?ncia de extremos de precipita??o ? a radia??o de onda longa, verificada nas regi?es leste, norte e semi?rido do NEB, e a umidade relativa foi verificada no sul do NEB, em ambos os modelos. Os resultados apresentados pelos modelos de regress?o log?stica e de Poisson mostram evid?ncias de que estes extremos de precipita??o s?o impulsionados pela Oscila??o Madden-Julian, que ao interagir com os outros sistemas meteorol?gicos locais, regionais e grande escala podem ocasionar a ocorr?ncia destes extremos. O terceiro modelo, MVLG-GEV, avaliou os extremos a partir dos m?ximos anuais de precipita??o de forma m?ltipla (a partir de um conjunto de vari?veis) e constatou-se que as vari?veis que subsidiaram a ocorr?ncia dos extremos de precipita??o foram: as componentes zonal e meridional do vento, evapora??o e TSM (Atl?ntico e Pac?fico). Este artigo mostra evid?ncias de que a variabilidade da TSM vistas no Atl?ntico como no Pac?fico (El Ni?o-Oscila??o Sul) interfera na variabilidade interanual da precipita??o, modificando o padr?o de circula??o atmosf?rica na regi?o, resultando na intensifica??o ou inibi??o da ocorr?ncia dos extremos de precipita??o. Os coeficientes de regress?o log?stica, de Poisson e de MVLG-GEV demonstraram signific?ncia estat?stica, inferiores a 5%. Em rela??o aos n?veis de retorno para os pr?ximos 30 anos pelos MVLG-GEV, o menor n?vel foi de 91,62mm no sul da Bahia, enquanto o maior foi de 185,72mm no norte do Cear?. / In this thesis used four different methods in order to diagnose the precipitation extremes on Northeastern Brazil (NEB): Generalized Linear Model s via logistic regression and Poisson, extreme value theory analysis via generalized extre me value (GEV) and generalized Pareto (GPD) distributions and Vectorial Generalized Linea r Models via GEV (MVLG GEV). The logistic regression and Poisson models were used to identify the interactions between the precipitation extremes and other variables based on the odds ratios and relative risks. It was found that the outgoing longwave radiation was the indicator variable for the occurrence of extreme precipitation on eastern, northern and semi arid NEB, and the relative humidity was verified on southern NEB. The GEV and GPD distribut ions (based on the 95th percentile) showed that the location and scale parameters were presented the maximum on the eastern and northern coast NEB, the GEV verified a maximum core on western of Pernambuco influenced by weather systems and topography. The GEV and GPD shape parameter, for most regions the data fitted by Weibull negative an d Beta distributions (? < 0) , respectively. The levels and return periods of GEV (GPD) on north ern Maranh?o (centerrn of Bahia) may occur at least an extreme precipitation event excee ding over of 160.9 mm /day (192.3 mm / day) on next 30 years. The MVLG GEV model found tha t the zonal and meridional wind components, evaporation and Atlantic and Pacific se a surface temperature boost the precipitation extremes. The GEV parameters show the following results: a) location ( ), the highest value was 88.26 ? 6.42 mm on northern Maran h?o; b) scale ( ? ), most regions showed positive values, except on southern of Maranh?o; an d c) shape ( ? ), most of the selected regions were adjusted by the Weibull negative distr ibution ( ? < 0 ). The southern Maranh?o and southern Bahia have greater accuracy. The level period, it was estimated that the centern of Bahia may occur at least an extreme precipitatio n event equal to or exceeding over 571.2 mm/day on next 30 years.

Made available in DSpace on 2014-12-17T15:15:04Z (GMT). No. of bitstreams: 1 FranciscoES_Fis.pdf: 479617 bytes, checksum: 973534294f52a9d1981e10ed49800d56 (MD5) Previous issue date: 2005-07-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Many astronomical observations in the last few years are strongly suggesting that the current Universe is spatially flat and dominated by an exotic form of energy. This unknown energy density accelerates the universe expansion and corresponds to around 70% of its total density being usually called Dark Energy or Quintessence. One of the candidates to dark energy is the so-called cosmological constant (&#923;) which is usually interpreted as the vacuum energy density. However, in order to remove the discrepancy between the expected and observed values for the vacuum energy density some current models assume that the vacuum energy is continuously decaying due to its possible coupling with the others matter fields existing in the Cosmos. In this dissertation, starting from concepts and basis of General Relativity Theory, we study the Cosmic Microwave Background Radiation with emphasis on the anisotropies or temperature fluctuations which are one of the oldest relic of the observed Universe. The anisotropies are deduced by integrating the Boltzmann equation in order to explain qualitatively the generation and c1assification of the fluctuations. In the following we construct explicitly the angular power spectrum of anisotropies for cosmologies with cosmological constant (&#923;CDM) and a decaying vacuum energy density (&#923;(t)CDM). Finally, with basis on the quadrupole moment measured by the WMAP experiment, we estimate the decaying rates of the vacuum energy density in matter and in radiation for a smoothly and non-smoothly decaying vacuum / Muitas observa??es astron?micas feitas nos ?ltimos anos sugerem fortemente que o universo ? espacialmente plano e dominado por uma forma de energia ex?tica. Esta densidade de energia desconhecida acelera a expans?o do universo e corresponde a cerca de 70% da densidade total de energia sendo chamada de Energia Escura ou Quintess?ncia. Um dos candidatos a energia escura, ? a chamada constante cosmol?gica (&#923;) que ? usualmente interpretada como a densidade de energia do v?cuo. Contudo, para remover a discrep?ncia entre os valores esperado e observado para a densidade de energia do v?cuo, alguns modelos atuais assumem que a energia do v?cuo decai continuamente devido a seu poss?vel acoplamento com os outros campos materiais do cosmos. Nesta disserta??o, partindo dos conceitos e fundamentos da teoria da relatividade geral, estudamos a radia??o c?smica de fundo com ?nfase nas anisotropias ou flutua??es em sua temperatura que servem de base observacional para o modelo do Big Bang e ? uma das rel?quias mais antigas do universo. As anisotropias s?o deduzidas a partir da integra??o da equa??o de Boltzrnann, que fazemos em primeira ordem para explicar qualitativamente a gera??o e c1assifica??o destas flutua??es. Em seguida construimos o espectro angular de pot?ncia das anisotropias e deduzimos sua forma expl?cita em grandes escalas para o modelo com constante cosmol?gica (ACDM) e para um modelo com decaimento do v?cuo (&#923;(t)CDM). Com base no momento de quadrup?lo medido pelo experimento do WMAP; estimamos as raz?es de decaimento da densidade de energia do v?cuo em mat?ria e em radia??o tanto no decaimento homog?neo como no n?o- homog?neo

Made available in DSpace on 2014-12-17T15:32:23Z (GMT). No. of bitstreams: 1 ThaisAOM_DISSERT.pdf: 2404087 bytes, checksum: de8e1e5267a7184559b5a6f8a0440fa3 (MD5) Previous issue date: 2014-02-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The presence of inflammatory cells within the tumor microenvironment plays a dual role that may contribute both to the progression and for inhibition of tumor growth. Recent studies suggest that the quality, not the quantity, of the inflammatory infiltrate is the most important determinant for prognosis. Therefore, TCD8 cells and natural killer cells are the main effector cells in combating cancer. The aim of this study was to assess, through the immunohistochemical study, the expression of TCD8 lymphocytes and NK cells in epidermoid carcinoma (EC) of the lower lip. The sample consisted of 32 specimens of EC of the lower lip, of which 16 had regional lymph node metastasis, and the 16 remaining, free of metastases. The total number of positive cells at the front of invasion were evaluated quantitatively and the results were related to clinical TNM staging, histological grade of malignancy and prognostic factors. It was observed for the group with metastasis, prevalence of stages III and IV (p<0.0001). Most patients with metastasis, had a high grade of malignancy (p=0.006). Most cases classified as high grade of malignancy had stages III and IV (p=0.032). Of the total sample, there were three cases of recurrence and five with death, however these variables were not statistically significant when associated with clinicopathological parameters. The immunostaining of CD8 and CD57, respectively, showed no statistically significant association with any of the clinicopathological parameters studied, metastasis (p=0.346, p=0.622), TNM classification (p=0.146, p=0.576), histological grade of malignancy (p=0.936, p=936), recurrence (p=0.075, p=0.075) and death (p=0.897, p=0.856). Believing in the function of the immunological system against malignant cells, it is concluded that the TD8 lymphocytes and NK cells, would be acting in the control of the progression of malignant neoplasms, but not in isolated manner / A presen?a de c?lulas inflamat?rias dentro do microambiente tumoral exerce um papel dual podendo contribuir tanto para a progress?o como para a inibi??o do crescimento do tumor. Estudos recentes sugerem que a qualidade, e n?o a quantidade, do infiltrado inflamat?rio ? o determinante mais importante para o progn?stico. Portanto, as c?lulas TCD8 e as c?lulas natural killer (NK), s?o as principais c?lulas efetoras no combate do c?ncer. O objetivo desse trabalho foi avaliar, atrav?s do estudo imunoistoqu?mico, a express?o dos linf?citos TCD8 e das c?lulas NK em carcinoma epiderm?ide (CE) de l?bio inferior e sua rela??o com a progress?o da les?o. A amostra foi composta por 32 esp?cimes de CE de l?bio inferior, dos quais 16 apresentavam met?stase linfonodal regional, e os 16 restantes, livres de met?stase. O total de c?lulas positivas no front de invas?o foram avaliados de forma quantitativa e os resultados obtidos foram relacionados com estadiamento cl?nico TNM, grada??o histopatol?gica de malignidade e fatores progn?sticos. Observou-se para o grupo com met?stases, preval?ncia dos est?gios III e IV (p<0,0001). A maioria dos casos com met?stase, apresentava alto grau de malignidade (p=0,006). A maioria dos casos classificados como de alto grau de malignidade apresentava est?gios III e IV (p=0,032). Do total da amostra, houve tr?s casos com recidiva e cinco com ?bito, no entanto essas vari?veis n?o apresentaram diferen?a estatisticamente significativa quando associadas a par?metros clinico-patol?gicos. A imunoexpress?o do CD8 e do CD57, respectivamente, n?o apresentaram associa??o estatisticamente significativa com nenhum dos par?metros cl?nico patol?gicos estudados, met?stases (p=0,346; p=0,622); estadiamento cl?nico TNM (p=0,146; p=0,576) grada??o histopatol?gica de malignidade (p=0,936; p=936); recidiva (p=0,075; p=0,075) e ?bito (p=0,897; p=0,856). Acreditando na fun??o que o sistema imunol?gico possui frente a c?lulas malignas, conclui-se que os linf?citos TCD8 e as c?lulas NK, estariam atuando no controle da progress?o de neoplasias malignas, mas n?o de forma isolada

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-03-21T12:37:29Z No. of bitstreams: 1 JaimeRodriguezCoariti_TESE.pdf: 6941864 bytes, checksum: bb24f2eaaa294eeef0cc4c951d8fb000 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-03-23T14:03:15Z (GMT) No. of bitstreams: 1 JaimeRodriguezCoariti_TESE.pdf: 6941864 bytes, checksum: bb24f2eaaa294eeef0cc4c951d8fb000 (MD5) / Made available in DSpace on 2018-03-23T14:03:15Z (GMT). No. of bitstreams: 1 JaimeRodriguezCoariti_TESE.pdf: 6941864 bytes, checksum: bb24f2eaaa294eeef0cc4c951d8fb000 (MD5) Previous issue date: 2017-12-15 / O Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / Nos ?ltimos anos diversos estudos mostraram que a Radia??o Ultravioleta Solar (R-UV) provoca impactos em diversas ?reas, entre elas, destacam-se a sa?de humana e a climatologia. As cidades de La Paz ? Bol?via e Natal ? Brasil caracterizam-se por apresentar fluxos de RUV elevados ao longo de todo o ano. Tais cidades possuem caracter?sticas t?picas e pr?prias: Natal ? uma cidade litor?nea, com clima tropical, enquanto La Paz est? localizada a uma altitude acima de 3.600 m, nos Andes. Este trabalho teve como principais objetivos: 1) avaliar o comportamento dos n?veis de R-UV em solo, por meio do ?ndice ultravioleta (IUV); as Doses M?nimas Eritematosas (DEM) e a Dose Erit?mica Acumulada (DEA), nas cidades de La Paz e Natal, no per?odo compreendido entre 1997 a 2012; 2) realizar uma descri??o das principais caracter?sticas clim?ticas destas cidades que possam detectar potenciais fatores que justifiquem patamares t?o elevados de radia??o e 3) avaliar a incid?ncia de fotodermatoses (FTD) observadas em La Paz, buscando sua poss?vel associa??o com fatores clim?ticos. As informa??es de casos de FTD na cidade de La Paz foram coletadas na Policl?nica Central do Hospital ?Caja Nacional de Salud? (CNS). As informa??es de R-UV foram obtidas por espectrofot?metros Brewer, instalados em ambas as localidades. Referente ? ?rea de sa?de, utilizou-se as equa??es de estima??o generalizada para a determina??o do risco relativo de FTD por sexo e faixa et?ria e as taxas de incid?ncia de FTD foram assim avaliadas. Com rela??o ? intensidade da R-UV, realizou-se uma valida??o da informa??o coletada pelos espectrofot?metros por meio de modelagem. Observou-se que, independente da ?poca do ano, no hor?rio pr?ximo ao meio dia, os registros de IUV corresponderam ?s escalas ?Muito Alto e Extremo? nas duas cidades. A DEM para fototipos IV (450 Jm-2) foi atingida j? nas duas primeiras horas do dia. Nos ver?es, a DEA atingiu um m?ximo de 12.950 Jm-2 em La Paz e 7.546 Jm-2 em Natal. Em La Paz, registraram-se 12.153 casos de FTD dos quais 63,7% correspondem ao sexo feminino. A Taxa m?dia de Incid?ncia (TI) foi de 31 casos por 100.000 habitantes, evidenciando um risco 4,7 vezes maior nos idosos comparado ?quele da faixa de 0 a 4 anos. Uma das principais dificuldades no desenvolvimento desta pesquisa foi referente ao acesso ? informa??o de sa?de em Natal em um hospital de refer?ncia (Hospital Universit?rio Onofre Lopes - HUOL-UFRN). Dado que a pesquisa teria que ser submetida a um comit? de ?tica para avalia??o e/ou aprova??o. Por?m, n?o havia garantia de ser aprovada. No intuito de n?o adiar o estudo decidiu-se por restringir a an?lise dos casos cl?nicos apenas ? cidade de La Paz. Referente ? sa?de da popula??o em La Paz destaca-se que a incid?ncia de FTD no sexo feminino ? maior em rela??o ao masculino, com especial destaque na faixa et?ria de 15 a 59 anos. Conclui-se que h? necessidade de ado??o de novas pol?ticas e estrat?gias educativas de prote??o individual, tanto em La Paz quanto em Natal, devido ? exposi??o das popula??es dessas cidades aos altos fluxos de R-UV observados em solo. / In recent years several studies have shown that ultraviolet radiation (R-UV) causes impacts in several areas, among them, human health and climatology. The cities of La Paz - Bolivia and Natal - Brazil, are characterized by high R-UV fluxes throughout the year. These cities have typical and proper characteristics: Natal is a coastal city with a tropical climate, while La Paz is located at an altitude above 3,600 m in the Andes. The main objectives of this work were: 1) to evaluate the behavior of R-UV levels by means of the ultraviolet index (UVI); the Minimum Erythemical Dose (DEM) and the Cumulative Erythema Dose (DEA) determination, in the cities of La Paz and Natal, between 1997 and 2012; 2) to perform a description of the main climatic characteristics of these cities that can detect potential factors that could justify such high levels of radiation and 3) to evaluate the incidence of photodermatoses (FTD) observed in La Paz, seeking its possible association with climatic factors. The information on FTD cases in the city of La Paz was collected at the Central Polyclinic of the Hospital "Caja Nacional de Salud" (CNS). The R-UV information was obtained by Brewer spectrophotometers, installed in both locations. Regarding the health area, the generalized estimation equations were used to determine the relative risk of FTD by sex and age group and so the incidence rates of FTD were evaluated. About the intensity of the RUV, it was carried out a validation of the information collected by the spectrophotometers through modeling. It was observed that, regardless of the time of the year, around midday, IUV records corresponded to the "Very High and Extreme" scales in the two cities. The DEM for phototypes IV (450 Jm-2) was reached already in the first two hours of the day. In summers, the DEA reached a maximum of 12,950 Jm-2 in La Paz and 7,546 Jm-2 in Natal. In La Paz, there were 12,153 cases of FTD, of which 63.7% were female. The average Incidence Rate (TI) was 31 cases per 100,000 inhabitants, showing a 4.7 times higher risk in the elderly compared to the 0 to 4 year age range. One of the main difficulties in the development of this research was the access to health information in Natal in a reference hospital (Hospital Universit?rio Onofre Lopes - HUOL-UFRN) due to the research would have to be submitted to an ethics committee for evaluation and / or approval. However, there was no guarantee of approval. In order to not postpone the study, it was decided to restrict the analysis of the clinical cases only to the city of La Paz. Concerning the health of the population in La Paz it is emphasized that the incidence of FTD in the female sex is greater in relation to the male, with special emphasis on the age group of 15 to 59 years. It is concluded that there is a need to adopt educational policies and strategies for individual protection, both in La Paz and Natal, due to the exposure of the populations of these cities to the high fluxes of R-UV observed in soil.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-02T12:02:51Z No. of bitstreams: 1 AldoPaulinoDeMedeirosJunior_DISSERT.pdf: 2830589 bytes, checksum: e838c6a3026b5cd9757588fa10c784cf (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-06T21:02:12Z (GMT) No. of bitstreams: 1 AldoPaulinoDeMedeirosJunior_DISSERT.pdf: 2830589 bytes, checksum: e838c6a3026b5cd9757588fa10c784cf (MD5) / Made available in DSpace on 2017-02-06T21:02:12Z (GMT). No. of bitstreams: 1 AldoPaulinoDeMedeirosJunior_DISSERT.pdf: 2830589 bytes, checksum: e838c6a3026b5cd9757588fa10c784cf (MD5) Previous issue date: 2016-10-10 / A utiliza??o de materiais comp?sitos tem sido tema de in?meros trabalhos cient?ficos no Brasil e no mundo. A energia solar ? a fonte energ?tica prim?ria e representa a op??o mais ecologicamente vi?vel e a mais social de todas as fontes energ?ticas. Fabricou-se e estudou-se a capacidades e viabilidade de cozimento de um fog?o solar ? concentra??o multifocal com par?bolas refletoras fabricadas em material comp?sito destinado ao cozimento de alimento para fins residenciais, urbanos e rurais. Foi constitu?do de quatro par?bolas fabricadas com materiais comp?sitos, formados por resina ortoft?lica adicionados aos elementos: cortina de tecido, tecido de malha, saco de algod?o e saco de aniagem (juta). A principal caracter?stica do fog?o solar proposto foi a capacidade de coc??o de quatro alimentos simultaneamente, que lhe deu um car?ter de ineditismo tecnol?gico na coc??o de alimentos. Ser?o apresentados os processos de fabrica??o e montagem. A estrutura do fog?o tenha mobilidade de movimento aparente do sol. Representa uma op??o ecol?gica, limpa e renov?vel j? que ? uma alternativa para o uso em larga escala da lenha para o cozimento de alimentos, sendo um grande ajuda para as popula??es menos favorecidas economicamente que n?o param de crescer. Foram demonstradas as viabilidades t?rmicas e econ?micas do fog?o solar proposto para obten??o do cozimento de alimentos. Para demonstrar a viabilidade de utiliza??o do fog?o solar proposto foram cozidos v?rios alimentos da comida t?pica nordestina. Foi comprovada sua capacidade de produzir a coc??o de alimentos de uma refei??o t?pica, arroz, feij?o, macarr?o e carne em apenas uma hora. / The use of composite materials has been the subject of numerous scientific papers in Brazil and worldwide. Solar energy is the primary energy source and the option is more environmentally sustainable and more social of all energy sources. It is manufactured and studied the capabilities and baking feasibility of a solar cooker will multifocal concentration with reflective parabolas made of composite material for the cooking food for residential, urban and rural purposes. It consisted of four parabolas made of composite materials, formed by orthophthalic resin added to the elements: curtain fabric, knitted fabric, cotton bag, burlap sack (jute). The main feature of the proposed solar stove was cooking capacity of four foods simultaneously, which gave him a technological novelty character in cooking. The manufacturing and assembly processes will be presented. The solar cook structure has mobility apparent movement of the sun. It is an environmentally friendly, clean, renewable option since it is an alternative to the large-scale use of firewood for cooking food, and a great help to the disadvantaged populations that do not stop growing. Thermal and economic feasibility of solar cooker proposed for obtaining cooking and baking food have been demonstrated. To demonstrate the feasibility of using solar cooker proposed were cooked various foods of Northeastern typical food. It has proven its ability to produce the cooking of food in a typical meal, rice, beans, pasta and meat in just one hour.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-02T12:02:51Z No. of bitstreams: 1 DenisAlexandreDeRubimCostaNegocio_DISSERT.pdf: 2398279 bytes, checksum: 33b7bf7087e14743ac90ec48eb77b48d (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-06T21:30:45Z (GMT) No. of bitstreams: 1 DenisAlexandreDeRubimCostaNegocio_DISSERT.pdf: 2398279 bytes, checksum: 33b7bf7087e14743ac90ec48eb77b48d (MD5) / Made available in DSpace on 2017-02-06T21:30:45Z (GMT). No. of bitstreams: 1 DenisAlexandreDeRubimCostaNegocio_DISSERT.pdf: 2398279 bytes, checksum: 33b7bf7087e14743ac90ec48eb77b48d (MD5) Previous issue date: 2016-07-23 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Sistemas de combust?o s?o comuns na engenharia mec?nica, e a radia??o ? um importante modo de transfer?ncia de calor nestes sistemas. Portanto, a simula??o da troca de calor por radia??o ? bastante ?til na concep??o de equipamentos de combust?o e otimiza??o de processos de combust?o. Entre os m?todos computacionais usados para solucionar a transfer?ncia de calor por radia??o, o m?todo de Monte Carlo ? preciso e pode facilmente lidar com problemas que envolvem geometria complexa, espalhamento anisotr?pico e depend?ncia espectral das propriedades radiativas. Contudo, o m?todo de Monte Carlo ? computacionalmente dispendioso. Al?m disso, considerar com precis?o as propriedades espectrais de emiss?o/absor??o do meio tamb?m ? altamente demorado. Ent?o, reduzir o tempo computacional no Monte Carlo que leva em conta com precis?o a depend?ncia do coeficiente de absor??o com o comprimento de onda ? altamente desej?vel. O m?todo dos pacotes de energia multi-espectrais (MSB) ? um m?todo que reduz o tempo computacional associado ?s simula??es em Monte Carlo de um meio dependente das propriedades espectrais. Nesta pesquisa ? proposta e aplicada uma metodologia para uma avalia??o precisa do MSB aplicado em conjunto com o modelo espectral da soma-ponderada-de-gases-cinzas baseado nas linhas espectrais para a solu??o da transfer?ncia de calor por radia??o em um meio composto por vapor d??gua e esp?cies n?o-participantes. Os resultados preliminares mostram que a metodologia proposta ? capaz de fornecer resultados precisos, que permitem realizar uma an?lise mais conclusiva sobre o MSB em compara??o com os resultados anteriormente apresentados na literatura (Maurente e Fran?a (2015)). A metodologia proposta ser? aplicada para avaliar o MSB para 30 casos diferentes de meios compostos por vapor d??gua e esp?cies n?o participantes.

Fractures of the distal radius are the most common fractures treated at our clinics . It accounts for around 16 % of all fractures. Most often we meet them in two age groups - children and especially in postmenopausal women. In this group the fractures are frequently associated with osteoporosis. The most common cause of fracture is a fall on the outstretched extremity. Together with fractures of the proximal humerus, proximal femur and vertebral fractures they are the most common gerontotraumatologic fractures. The frequency of fractures of the distal radius gradually increasing. The reason is the increasing average age of the population and their active way of life. Our group consists of 5,359 patients treated for a fracture of the distal radius in 1998 and from 2001 to 2013 . During this time , the frequency of fractures increased by 19,7%. For women with distal radius fractures occur 3 times more frequently, the average age of treated was 59,1 years. About 80 % of distal radius fractures are treated conservatively. The surgical treatment of seniors decide not only the type and stability of the fracture, bone quality, but especially the overall condition of the patient and his claims to a final functional outcome. Long-term functional results after conservative treatment in the elderly are nearly the...

Fractures of the distal radius are the most common fractures treated at our clinics . It accounts for around 16 % of all fractures. Most often we meet them in two age groups - children and especially in postmenopausal women. In this group the fractures are frequently associated with osteoporosis. The most common cause of fracture is a fall on the outstretched extremity. Together with fractures of the proximal humerus, proximal femur and vertebral fractures they are the most common gerontotraumatologic fractures. The frequency of fractures of the distal radius gradually increasing. The reason is the increasing average age of the population and their active way of life. Our group consists of 5,359 patients treated for a fracture of the distal radius in 1998 and from 2001 to 2013 . During this time , the frequency of fractures increased by 19,7%. For women with distal radius fractures occur 3 times more frequently, the average age of treated was 59,1 years. About 80 % of distal radius fractures are treated conservatively. The surgical treatment of seniors decide not only the type and stability of the fracture, bone quality, but especially the overall condition of the patient and his claims to a final functional outcome. Long-term functional results after conservative treatment in the elderly are nearly the...