19 resultados para prism-waveguide coupler
em Universidade Federal do Rio Grande do Norte(UFRN)
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The subject Responsibility Enterprise Social (RSE) is relatively recent in the half national academic and the world of the management businesses as practical. For the lack of socialization of experiences and clarity of concepts, shunting lines in the agreement of the subject and the conduction of the interventions occur. It was looked to inquire, in this research, the development of the project of Social Responsibility Enterprise ―School of Computer science and Citizenship‖ of a situated company in the State of Pará, objectifying to evaluate it and later to understand it. For this, one searched to describe the characteristics and structure of the School, to identify to the lines and lines of direction adopted for this Project and to identify to the influence and results of the same in the life of pupils, professors and egresses of the School. It is characterized for a study of case with qualitative boarding of descriptive character, carried through interviews structuralized in a sample of 21 divided members of the School between professors, pupils and egresses. It was used of the analysis of categorical content, having as axle for the interpretation of the data the Social Responsibility, the Digital Inclusion and the Education. The gotten results inform that the infrastructure has challenges to face, point disparities between the conception and practical of the categories characterized in the Politician-Pedagogical Project of the EIC and the influence that, exactly under limits, the life of the professors, pupils reaches and egress. One evidenced that Social action for damages of this company when come back toward this project, they had not been evidenced. For this prism, these actions had only remained in the assistencialist speech and not structural, being thus, the company is not fulfilling its paper of transforming element of the reality of its clientele and the population that lives in it s around
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Background: Leprosy can cause severe disability and disfigurement and is still a major health in different parts of the world. Only a subset of those individuals exposed to the pathogen will go on to develop clinical disease and there is a broad clinical spectrum amongst leprosy patients. The outcome of infection is in part due to host genes that influence control of the initial infection and the host´s immune response to that infection. Aim: Evaluate if polymorphisms type SNP in the 17q118q21 chromosomic region contribute to development of leprosy in Rio Grande do Norte population. Material and methods: A sample composed of 215 leprosy patients and 229 controls drawn from the same population were genotyped by using a Snapshot assay for eight genes (NOS2A, CCL18, CRLF3, CCL23, TNFAIP1, STAT5B, CCR7 and CSF3) located in chromosomic region 17q118q21. The genotype and allele frequency were measured and statistical analysis was performed by chi-square in SPSS version 15 and graph prism pad version 4 software. Results: Ours results indicated that the markers NOS2A8277, NOS2A8rs16949, CCR78rs11574663 and CSF38rs2227322 presented strong association with leprosy and their risk genotype were GG, TT, AA and GG respectively. The risk genotypes for all markers associated to leprosy presented recessive inheritance standard. When we compared the interaction among the markers in different combination we find that the marker NOS2A8277 associated with CCR78rs11574663 presented highest risk probability to development of leprosy. When we evaluated the haplotype of the risk markers it was found a haplotype associated with increase of the protection (CSF38rs22273228CC, CCR78 rs115746638GA, NOS2A8rs169498CT and NOS2A82778GA). The association of the clinical forms paucibacilary and multibacilary with markers showed that to the markers NOS2A8 2778GG, CCR78rs115746638AA and CSF38rs22273228GG there were a strong influence to migration to multibacilary pole and to marker NOS2A8rs169498TT the high proportion was found to the paucibacilary form. Conclusions: Changes in the genes NOS2A, CCR7 and CSF3 can influence the immune response against Mycobacterium leprae. The combination among these polymorphisms alters the risk probability to develop leprosy. The markers type SNP associated to development of the leprosy also are linked to clinical forms and its severity being the polymorphism NOS2A8rs169498TT associated with paucibacilar form and the polymorphisms NOS2A82778GG, CCR78rs115746638AA and CSF38rs22273228GG associated to multibacilar form
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Human mesenchymal stem cells (MSC) are powerful sources for cell therapy in regenerative medicine. The long time cultivation can result in replicative senescence or can be related to the emergence of chromosomal alterations responsible for the acquisition of tumorigenesis features in vitro. In this study, for the first time, the expression profile of MSC with a paracentric chromosomal inversion (MSC/inv) was compared to normal karyotype (MSC/n) in early and late passages. Furthermore, we compared the transcriptome of each MSC in early passages with late passages. MSC used in this study were obtained from the umbilical vein of three donors, two MSC/n and one MSC/inv. After their cryopreservation, they have been expanded in vitro until reached senescence. Total RNA was extracted using the RNeasy mini kit (Qiagen) and marked with the GeneChip ® 3 IVT Express Kit (Affymetrix Inc.). Subsequently, the fragmented aRNA was hybridized on the microarranjo Affymetrix Human Genome U133 Plus 2.0 arrays (Affymetrix Inc.). The statistical analysis of differential gene expression was performed between groups MSC by the Partek Genomic Suite software, version 6.4 (Partek Inc.). Was considered statistically significant differences in expression to p-value Bonferroni correction ˂.01. Only signals with fold change ˃ 3.0 were included in the list of differentially expressed. Differences in gene expression data obtained from microarrays were confirmed by Real Time RT-PCR. For the interpretation of biological expression data were used: IPA (Ingenuity Systems) for analysis enrichment functions, the STRING 9.0 for construction of network interactions; Cytoscape 2.8 to the network visualization and analysis bottlenecks with the aid of the GraphPad Prism 5.0 software. BiNGO Cytoscape pluggin was used to access overrepresentation of Gene Ontology categories in Biological Networks. The comparison between senescent and young at each group of MSC has shown that there is a difference in the expression parttern, being higher in the senescent MSC/inv group. The results also showed difference in expression profiles between the MSC/inv versus MSC/n, being greater when they are senescent. New networks were identified for genes related to the response of two of MSC over cultivation time. Were also identified genes that can coordinate functional categories over represented at networks, such as CXCL12, SFRP1, xvi EGF, SPP1, MMP1 e THBS1. The biological interpretation of these data suggests that the population of MSC/inv has different constitutional characteristics, related to their potential for differentiation, proliferation and response to stimuli, responsible for a distinct process of replicative senescence in MSC/inv compared to MSC/n. The genes identified in this study are candidates for biomarkers of cellular senescence in MSC, but their functional relevance in this process should be evaluated in additional in vitro and/or in vivo assays
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
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This dissertation deals with the possibility of build an effective social control of the judiciary Brazilians. The theme was bounded by a cut geographic and secular: the experience of the Center of Justice and Citizenship in the state of Rio Grande do Norte (OJC/RN), which begins formally in august 2003. The research approach and leave of experience in judicial practice and policy specific substrates to theorize about the subject. We collected documents about cases, the judicial diagnoses, reports, news material, in addition to lifting bibliographic. Therefore, it is working with about notions of a democratic state of right in the light of the Brazilian Constitution of 1988, in order to contextualize the insertion of the judicial system, by the prospect of legitimacy, which is considered by a look formal and material. It is a brief analysis of the system of official control of the judiciary (internal and external), is emphasizing its shortcomings functional and its corporate character, which suffers from poor conformation democratic. Then there is a discussion about the need to establish the social control of the judiciary, through the prism of relations of power that are locked in the judiciary, the lack of formal criteria for the guarantee of obtaining the correct judgment (laws, precedents and conscience of the judge), the problems of impunity and justice class, and from the examination of some cases, as the body of search. From this conjuncture, prepares to be an outline of shapes and the limits of social control, consonant the proposal erected in certain sectors of organized civil society, represented by the movement s social OJC. In the end, considerations are made on the legitimacy and constitutionality of OJC
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This paper is about the objective dimension of fundamental rights, aiming to present a concept well-designed for this dimension, and establish a systematic teaching of the subject, presenting the developments of this dimension of fundamental rights. The objective dimension of fundamental rights arises related to the idea of linking the state of fundamental rights, transforming these rights as the foundation and purpose of the state. It is distinguished from that perspective of the subjective dimension of fundamental rights, which includes the fundamental rights in an individual-state relationship. Under the subjective prism, rights are seen as limits required by the individual, the state intervention in the lives of individuals. A new dimension goes beyond the perspective of the rights of the individual as a mere resistance in the face of the state, assigning those rights also an active mission, which generates a series of legal repercussions. These developments or "effectiveness" the objective dimension are studied. The first consists of Binding Effectiveness, and demonstrated a new respect for fundamental rights within the state structure, which creates concepts such as "linkage of state functions fundamental rights" and "state s duty to protect". There is also the Radiant Effectiveness in which are examined topics such as the "constitutionalization of Law" and the "application of fundamental rights to particular relationships". Studies are still Procedure Effectiveness, in the case of "objectification of the mechanisms of protection of fundamental rights" and "opening of the processes of state protection of fundamental rights to public participation"
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The fundamental social right to education has a lengthy constitutional argument, having been declared as a right to everyone in the Title dedicated to the fundamental rights and warrants and, later, scrutinized in the Social Order Chapter exclusively devoted to this theme, where specific rights are guaranteed and fundamental duties are imposed to family, society, and state. In that which concerns education, the 1988 Constitution is the result of a historical-normative process which, since the days of the Lusitanian Empire wavering between distinct levels of protection warrants in some way the educational process. Nevertheless, not even the State s oldest commitment to education has been fully achieved, namely, the annihilation of illiteracy. Even as other fundamental social rights, education is inflicted with the lack of effective political will to reach its fulfillment, and this is reflected in the production of doctrine and jurisprudence which reduce the efficacy of these rights. The objective of this work is to analyze what part is to be played by the constitutional jurisdiction in the reversal of this picture in regards to the fulfillment of the fundamental social right to education. Therefore it is indispensable to present a proper conception of constitutional jurisdiction its objectives, boundaries and procedures and that of the social rights in the Brazilian context so as to establish its relationship from the prism of the right to education. The main existing obstacles to the effective action of constitutional jurisdiction on the ground of social rights are identified and then proposals so as to overcome them are presented. The contemplative and constructive importance of education in the shaping of the individual as well as its instrumental relevance to the achievement of the democratic ideal through the means of the shaping of the citizen is taken into account. The historical context which leads to the current Brazilian educational system is analyzed, tracing the normative area and the essential content of the fundamental right to education aiming to delineate parameters for the adequate development of the constitutional jurisdiction in the field. This jurisdiction must be neither larger nor narrower than that which has been determined by the Constitution itself. Its activity has been in turns based on a demagogic rhetoric of those fundamental rights which present a doubtful applicability, or falling short of that which has been established showing an excessive reverence to the constituent powers. It is necessary to establish dogmatic parameters for a good action of this important tool of constitutional democracy, notably in regards to the fundamental social right to education, for the sake of its instrumental role in the achievement of the democratic ideals of liberty and equality
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Tuberculosis is a serious disease with high incidence and prevalence, and in many countries a priority public health problem, with persisting high epidemiological significance. Seeing the person with tuberculosis it is important to observe his/her self care, as well as the difficulties intertwined in this process, since it can be directly impacting the health/disease process. The aim of this study was to analyze the self care of people with tuberculosis. Descriptive study with qualitative approach, conducted in West Sanitary District of the city of Natal, RN. Data collection occurred through a semi-structured interview guided by questions concerning sociodemographic and about the disease, treatment, and self care, between the months of July to September 2012 and met the ethical precepts of research with human beings. To analyze the results we used the technique of thematic content analysis of Laurence Bardin, through the prism of the theoretical-philosophical self care discussed by Michel Foucault. From the analysis emerged two categories, the first being, Meaning of tuberculosis, with subcategories: tuberculosis as sadness and unhappiness and tuberculosis as a normal issue, and the second, Beware yourself to tuberculosis, which had subcategories: self care as attention to the health care of oneself as satisfaction of basic needs and difficulties to self care. Tuberculosis represents for some people, something really sad, causing psychological suffering, however the other presents as normal. Self care of persons with tuberculosis in this study are related in great part to seek health care and the satisfaction of basic needs. About the difficulties related to the practice of self-care, it is observed that these are tied to food, time for rest, slowness of health services for scheduling appointments and tests, as well as related habits and dependencies in the lives of these people. This study contributed to a reflection of the users with tuberculosis and self care, revealing aspects that healthcare professionals should pay attention to watch these people, being able to see everyday on the run, the need for a space and time for oneself
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Usually masonry structures has low tension strength, hence the design to flexural efforts can results in high reinforcement ratio, specification of high unit and prism strength, structural members with larger section dimensions and modification in structural arrangement to be possible to use masonry members. The main objective of this study is to evaluate the stiffness, the efforts distribution and the effect of horizontal elements (girders) and vertical elements (counterforts) distribution on the behavior of masonry blocks retaining walls. For this purpose, numerical modeling was performed on typical retaining wall arrangements by varying the amount and placement of horizontal and vertical elements, beyond includes elements simulating the reactions of the soil supporting the foundation of the wall. The numerical modeling also include the macro modeling strategy in which the units, mortar and grout are discretized by a standard volume that represents the masonry elastic behavior. Also, numerical model results were compared with those ones of simplified models usually adopted in bending design of masonry elements. The results show horizontal displacements, principal and shear stresses distribution, and bending moments diagrams. From the analysis it was concluded that quantity and manner of distribution of the girders are both important factors to the panel flexural behavior, the inclusion of the foundation changed significantly the behavior of the wall, especially the horizontal displacements, and has been proposed a new way of considering the flanges section of the counterforts
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The bidimensional periodic structures called frequency selective surfaces have been well investigated because of their filtering properties. Similar to the filters that work at the traditional radiofrequency band, such structures can behave as band-stop or pass-band filters, depending on the elements of the array (patch or aperture, respectively) and can be used for a variety of applications, such as: radomes, dichroic reflectors, waveguide filters, artificial magnetic conductors, microwave absorbers etc. To provide high-performance filtering properties at microwave bands, electromagnetic engineers have investigated various types of periodic structures: reconfigurable frequency selective screens, multilayered selective filters, as well as periodic arrays printed on anisotropic dielectric substrates and composed by fractal elements. In general, there is no closed form solution directly from a given desired frequency response to a corresponding device; thus, the analysis of its scattering characteristics requires the application of rigorous full-wave techniques. Besides that, due to the computational complexity of using a full-wave simulator to evaluate the frequency selective surface scattering variables, many electromagnetic engineers still use trial-and-error process until to achieve a given design criterion. As this procedure is very laborious and human dependent, optimization techniques are required to design practical periodic structures with desired filter specifications. Some authors have been employed neural networks and natural optimization algorithms, such as the genetic algorithms and the particle swarm optimization for the frequency selective surface design and optimization. This work has as objective the accomplishment of a rigorous study about the electromagnetic behavior of the periodic structures, enabling the design of efficient devices applied to microwave band. For this, artificial neural networks are used together with natural optimization techniques, allowing the accurate and efficient investigation of various types of frequency selective surfaces, in a simple and fast manner, becoming a powerful tool for the design and optimization of such structures
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This work presents a theoretical, numerical and computation analysis of parameters of a rectangular microstrip antenna with metamaterial substrate, fin line as a coupler and also integrated devices like integrated filter antenna. It is applied theory to full-wave of Transverse Transmission Line - TTL method, to characterize the magnitude of the substrate and obtain the general equations of the electromagnetic fields. About the metamaterial, they are characterized by permittivity and permeability tensor, reaching to the general equations for the electromagnetic fields of the antenna. It is presented a study about main representation of PBG(Photonic Band Gap) material and its applied for a specific configuration. A few parameters are simulated some structures in order to reduce the physical dimensions and increase the bandwidth. The results are presented through graphs. The theoretical and computational analysis of this work have shown accurate and relatively concise. Conclusions are drawn and suggestions for future work
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The use of flexible materials for the development of planar circuits is one of the most desired and studied characteristics, lately, by researchers. This happens because the flexibility of the substrate can provide previously impracticable applications, due to the rigidity of the substrates normally used that makes it difficult to fit into the circuits in irregular surfaces. The constant interest in recent years for more lighter devices, increasingly more compacts, flexible and with low cost, led to a new line of research of great interest from both academic and technological views, that is the study and development of textile substrates that can be applied in the development of planar circuits, for applications in the areas of security, biomedical and telecommunications. This paper proposes the development of planar circuits, such as antennas , frequency selective surfaces (FSS) and planar filters, using textile (cotton ticking, jeans and brim santista) as the dielectric substrate and the Pure Copper Polyester Taffeta Fabric, a textile of pure copper, highly conductive, lightweight and flexible, commercially sold as a conductive material. The electrical characteristics of textiles (electric permittivity and loss tangent) were characterized using the transmission line method (rectangular waveguide) and compared with those found in the literature. The structures were analyzed using commercial software Ansoft Designer and Ansoft HFSS, both from the company Ansys and for comparison we used the Iterative Method of Waves (WCIP). For the purpose of validation were built and measured several prototypes of antennas, planar filters and FSS, being possible to confirm an excellent agreement between simulated and measured results
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The aim of this work is to characterize and use the characteristic parameters of the planar structures constructed with fin lines looking for their applications in devices, using PBG Photonic Band Gap photonic materials as substrate, operating in the millimeter and optic wave bands.The PBG theory will be applied for the relative permittivity attainment for the PBG photonic substrate s and p polarizations. The parameters considered in the structures characterization are the complex propagation constant and the characteristic impedance of unilateral and bilateral fin lines that were obtained by the use of the TTL Transverse Transmission Line Method, together with the Method of the Moments. The final part of this work comprises studies related to the behavior of the asymmetric unilateral fin line coupler with photonic substrate. This research opens perspectives for new works in this modern area. Numerical results are shown by means of bi-dimensional and three-dimensional graphics. Conclusions and suggestions for future works are also presented
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The modern society depends on an efficient communications system able to of transmitting and receiving information with a higher speed and reliability every time. The need for ever more efficient devices raises optimization techniques of microstrip devices, such as techniques to increase bandwidth: thicker substrates and substrate structures with EBG (Electromagnetic Band Gap) and PBG (Photonic Band Gap). This work has how aims the study of the application of PBG materials on substrates of planar structures in microstrip, more precisely in directional quadrature couplers and in rat-race and impedance of transformers. A study of the planar structures in microstrip and substrates EBG is presented. The PBG substrates can be used to optimize the radiation through the air, thus reducing the occurrence of surface waves and the resulting diffraction edge responsible for degradation of radiation pattern. Through specific programs in FORTRAN Power Station obtained the frequencies and couplings for each structure. Are used the program PACMO - Computer Aided Design in Microwave. Results are obtained of the frequency and coupling devices, ranging the frequency band used (cellular communication and Wimax systems) and the permittivity of the substrate, comparing the results of conventional material and PBG materials in the s and p polarizations.
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O Acidente Vascular Cerebral (AVC) é uma síndrome clínica caracterizada por uma perturbação focal da função cerebral. Geralmente ocasiona quadro de disfunção motora acompanhada de prejuízo da função respiratória. Tendo em vista tal quadro e suas possíveis repercussões, a fisioterapia respiratória tem sido amplamente requisitada com o intuito reverter ou minimizar as complicações. Dentre os recursos utilizados para este fim, os espirômetros de incentivo são utilizados com o objetivo de restaurar os volumes pulmonares, modificando o padrão respiratório e de ventilação pulmonar, prevenindo a incidência das complicações pulmonares. O objetivo do presente estudo foi comparar o desempenho na realização da espirometria de incentivo volume-orientada (EI) e seus efeitos agudos sobre os volumes pulmonares em pacientes após AVC e sujeitos saudáveis. Foram selecionados 40 voluntários, de ambos os gêneros, divididos em grupo experimental (GE), composto por 20 pacientes após AVC e grupo controle (GC) composto por 20 sujeitos saudáveis, pareados quanto à idade, gênero e Índice de Massa Corpórea (IMC). A coleta dos dados foi realizada em duas etapas: (1) Avaliação cognitiva e neurofuncional (Mini Exame do Estado Mental, National Institute Stroke Scale, Medida de Independência Funcional, teste de desempenho da aprendizagem) (2) Avaliação Respiratória (espirometria, manovacuometria e cinemática tóraco-abdominal, através da Pletismografia Opto-eletrônica). A análise estatística foi realizada através do software Graphpad Prism 4.0, em que foram utilizados os testes t Student e ANOVA two-way para comparação intergrupos e adotado nível de significância de 5%. Os resultados mostraram que os pacientes apresentam desempenho inferior na aprendizagem da espirometria de incentivo, com uma média de erros maior 2,95 ± 1,39, quando comparados aos sujeitos saudáveis, 1,15 ± 0,98. Em relação à prática observacional utilizada não foi encontrada diferença entre a aprendizagem através do vídeo ou do terapeuta. Em relação aos efeitos agudos da espirometria de incentivo volume-orientada, os pacientes após AVC apresentaram valores de volume corrente 24,7%, 18% e 14,7% inferiores quando comparados aos sujeitos saudáveis nos momentos pré-EI, EI e pós-EI, porém a espirometria de incentivo induziu incrementos de volume similares em ambos os grupos estudados, com 75, 3% para os pacientes e 73,3% para os sujeitos saudáveis. A espirometria de incentivo promove ganhos significativos no volume corrente da parede torácica, tanto em pacientes acometidos por AVC como em sujeitos saudáveis, no entanto o desempenho da aprendizagem é inferior para os pacientes, para ambas as práticas com vídeo ou terapeuta