42 resultados para Expansão de tecidos

em Universidade Federal do Rio Grande do Norte(UFRN)


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VANTI, Nadia. A cientometria revisitada à luz da expansão da ciência, da tecnologia e da inovação. PontodeAcesso, Salvador, v. 5, p. 5-31, 2011

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The metropolitan regions of Northeast Brazil are being gradually included in a scenario of international investments, which are motivated by the restructuring of both touristic and real-estate sectors. The new capital, real-estate developers and space configurations that result from this process indicate the need for the creation and implementation of public tools which should, at least, allow the mitigation of the urban impacts and environmental losses resulting from this situation. The effects on landscape and on the socio-spatial configuration result from the intensification caused by the dynamism of the "real estate-tourism" sector. There is a regional integration as an expression of the urban expansion of the metropolitan area of Natal. This study investigates the uniqueness of the restructuring and territorial integration of coastal areas and the strategies of the circuit of capital accumulation formed by linking the real estate to tourism. It is intended to increase the understanding about the strategies of tourism, real estate and public policy agents involved in this territorial reconfiguration and in the fund-raising needed for the investments, to understand the existing social and environmental effects and their future trends and also to understand the forms of spatial production as results from the practices of approaching the land transformation and the tourism valorization of the landscape, in a synchronous manner, first in the Northeast region and, as a focal study, in the Metropolitan Area of Natal. Likewise, it is intended to apprehend the current processes of metropolization of the eastern coast of Rio Grande do Norte, in addition to indicate its physical-territorial transformation and the types of projects/developments promoted by the market in the recent period. Based upon analysis undertaken for the Metropolitan Region of Natal RN, this piece of work presents some considerations on possible legal instruments that can be adjusted to the municipalities which are experiencing the impact of this peculiar and recent phenomenon in the region, caused by the arrival of the real estate-touristic capital. It is also intended to point out basic proposals to the forms of public intervention, in a speculative way, starting from a Metropolitan Planning project within a medium and long term

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The `Outorga Onerosa do Direito de Construir - OODC` (Public Concession of Building Rights), instrument instituted by The City Statute in 2001, has as main objective the recovery of urban property, seeking for a fair distribution the urbanization benefits. The possibility of usage of the OODC instrument is linked to the maximum utilization coefficient, determined to specific areas in accordance to existing infrastructure conditions, further taking into account the formal real estate market, expansion axis and crowding. Being an instrument which establishes values to be paid for a better use of land, it maintains a narrow relation to the real estate, incentivizing or discouraging the crowding in specific areas. The present study investigates the relationship between the criteria for the making of the Public Concession of Building Rights instrument and the dynamics of the formal real estate market. It takes as empiric universe Parnamirim (RN), part of the Natal Metropolitan Area (RN), focusing on the application of the OODC in the period of 2008-2010. It seeks to better understand the necessary basis for the formulation of the instrument, about how it works and its relation to the formal real estate market. It aims to depict the formal real estate market by presenting the production of urban space in Parnamirim in terms of intensity and nature of the real estate, furthermore identifying the licensed properties through the application of the municipality instrument. For the conclusion, it is discussed the criteria for the formation of OODC, its relationship to the dynamics of the formal real estate market and its influencing possibilities in the processes of usage and occupation of land in the context of urban planning

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The urban expansion problem of Baía Formosa, a southern edge city of de Rio Grande do Norte eastern coast, which has been presented in other coast Brazilian towns, specially on those with tourist activities increase. Therefore, this situation brings huge concerns to their inhabitants, to their technical /scientific community and to the governments, because of the conflicts of interest and of the growth of urban problems that this has been created. At Baía Formosa, the situation is aggravated because the city is confined, once around it, there are large private proprieties, environmental preservation area and the sea, at the eastern edge. The objectives of this study are the analyses of this city expansion process in order to obtain adequate alternatives and defining methodology to apply in other urban nucleus that are subjected to similar situations. Of course, presents social relations, environmental conditions and promoting local population insertion should be considered in order that enjoin this process and contributing to a better social balance. This case study has used bibliography research, field data, maps and soil occupation recorders and photographs of the area, besides the primary data gathering by surveys carried out with many social actors. The present analysis shows that the urban expansion observed today is featured by a recent unsustainable model, which attacks the environment and brings either farm conflicts. On the other hand, the ecological tourism can represent an alternative in order to achieve an adequate expansion form, without forgetting the several structural parameters necessary to support the sustainable activities

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Human multipotent mesenchymal stromal cells (MSCs), also known as mesenchymal stem cells, have become an important and attractive therapeutic tool since they are easily isolated and cultured, have in vitro expansion potential, substantial plasticity and secrete bioactive molecules that exert trophic effects. The human umbilical cord as a cell source for cell therapy will help to avoid several ethical, political, religious and technical issues. One of the main issues with SC lines from different sources, mainly those of embryonic origin, is the possibility of chromosomal alterations and genomic instability during in vitro expansion. Cells isolated from one umbilical cord exhibited a rare balanced paracentric inversion, likely a cytogenetic constitutional alteration, karyotype: 46,XY,inv(3)(p13p25~26). Important genes related to cancer predisposition and others involved in DNA repair are located in 3p25~26. Titanium is an excellent biomaterial for bone-implant integration; however, the use can result in the generation of particulate debris that can accumulate in the tissues adjacent to the prosthesis, in the local bone marrow, in the lymph nodes, liver and spleen. Subsequently may elicit important biological responses that aren´t well studied. In this work, we have studied the genetic stability of MSC isolated from the umbilical cord vein during in vitro expansion, after the cryopreservation, and under different concentrations and time of exposition to titanium microparticles. Cells were isolated, in vitro expanded, demonstrated capacity for osteogenic, adipogenic and chondrogenic differentiation and were evaluated using flow cytometry, so they met the minimum requirements for characterization as MSCs. The cells were expanded under different concentrations and time of exposition to titanium microparticles. The genetic stability of MSCs was assessed by cytogenetic analysis, fluorescence in situ hybridization (FISH) and analysis of micronucleus and other nuclear alterations (CBMN). The cells were able to internalize the titanium microparticles, but MSCs preserve their morphology, differentiation capacity and surface marker expression profiles. Furthermore, there was an increase in the genomic instability after long time of in vitro expansion, and this instability was greater when cells were exposed to high doses of titanium microparticles that induced oxidative stress. It is necessary always assess the risks/ benefits of using titanium in tissue therapy involving MSCs, considering the biosafety of the use of bone regeneration using titanium and MSCs. Even without using titanium, it is important that the therapeutic use of such cells is based on analyzes that ensure quality, security and cellular stability, with the standardization of quality control programs appropriate. In conclusion, it is suggested that cytogenetic analysis, FISH analysis and the micronucleus and other nuclear alterations are carried out in CTMH before implanting in a patient

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This work reports the influence of the poly (ethylene terephthalate) textile surface modification by plasmas of O2 and mixtures (N2 + O2), on their physical and chemical properties. The treatment was carried out in a vacuum chamber. Some parameters remained constant during all treatment, such as: Voltage 470 V; Pressure 1,250 Mbar; Current: 0, 10 A and gas flow: 10 cm3/min. Other parameters, such as working gas composition and treatment time, were modified as the following: to the O2 plasma modified samples only the treatment time was changed (10, 20, 30, 40, 50 and 60 minutes). To the plasma with O2 and N2 only the chemical concentrations were changed. Through Capillary tests (vertical) an increase in textile wettability was observed as well as its influence on aging time and its consequence on wettability. The surface functional groups created after plasma treatments were investigated using X-ray Photoelectron Spectroscopy (XPS). The surface topography was examined by scanning electron microscope (SEM)

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As most current studies, reinforced plastics have been, in recent years, a viable alternative in building structural elements of medium and large, since the lightness accompanied by high performance possible. The design of hybrid polymer composites (combination of different types of reinforcements) may enable structural applications thereof, facing the most severe service conditions. Within this class of composite materials, reinforced the underlying tissues hybrid high performance are taking space when your application requires high load bearing and high rigidity. The objective of this research work is to study the challenges in designing these fabrics bring these materials as to its mechanical characterization and fracture mechanisms involved. Some parameters associated with the process and / or form of hybridization stand out as influential factors in the final performance of the material such as the presence of anisotropy, so the fabric weave, the process of making the same, normative geometry of the specimens, among others. This sense, four laminates were developed based hybrid reinforcement fabrics involving AS4 carbon fiber, kevlar and glass 49-E as the matrix epoxy vinyl ester resin (DERAKANE 411-350). All laminates were formed each with four layers of reinforcements. Depending on the hybrid fabric, all the influencing factors mentioned above have been studied for laminates. All laminates were manufactured industrially used being the lamination process manual (hand-lay-up). All mechanical characterization and study of the mechanism of fracture (fracture mechanics) was developed for laminates subjected to uniaxial tensile test, bending in three and uniaxial compression. The analysis of fracture mechanisms were held involving the macroscopic, optical microscopy and scanning electron microscopy

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In this study, it has been investigated the influence of silver film deposition onto 100% polyester woven and non-woven, on the survival of Escherichia coli and Staphylococcus aureus in contact with these surfaces. The treatment was performedin a chamber containing the working gas at low pressure (~ 10-2 mbar). Some process parameters such as as voltage: 470 V; pressure: 10-2 mbar; current : 0.40 A and gas flow: 6 and 10 cm3/min were kept constant. For the treatments with purêargon plasma using a flow of 6 and 10 cm3/min, different treatment times were evaluated, such as, 10 , 20, 30, 40, 50 and 60 minutes. Contact angle (sessile drop), measurements were used to determine the surface tension of the treated fabrics and its influence on the bacteria grow as weel as the possibilities of a biofilm formation. The formation of a silver film, as well as the amount of this element was verified byEDX technique. The topography was observed through scanning electron microscopy (SEM) to determine the size of silver grains formed on the surfaces of the fabric and assess homogeneity of treatment. The X-ray diffraction (XRD) was used to analyze the structure of silver film deposition. The woven fabric treatments enabled the formation of silver particulate films with particle size larger than the non-woven fabrics. With respect to bacterial growth, all fabrics were shown to be bactericidal for Staphylococcus aureus (S. aureus), while for the Escherichia coli (E. coli), the best results were found for the non-woven fabric (TNT) treated with a flow of 10 cm3/min to both bacteria

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The broad objective of the research The pedagogic use of ICT as development of teaching capacity: the case of ProInfo Natal/RN was to realize an evaluation of this program effectiveness in public schools. Specifically, we ve tried to observe if the program: a) succeeded by promoting the pedagogical use of new ICTs, b) stimulated the improvement of teaching and learning using ICT, and c) performed functionings and expanding its capabilities. The methodology consisted of literature revision; realization of half-structured interviews with administrators and teachers, and leading four focal groups with students in 9th grade of elementary school, were also made observations and analysis about the official documents which regulates the program. Our results showed that ProInfo presents various interferences in its effectiveness, causing a gap between its marks and the actual results of its use in everyday life of schools. We ve concluded that the program needs to challenge these weaknesses in order to contribute to the promotion of functionings and expanding its capabilities

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The progress of a nation is closely linked to the energy supply that it has to develop its economic capabilities. The dependence of contemporary society for energy requires the continued expansion of the use of renewable energy, and implies coordinated action of the Democratic State in the delimitation of the best ways to make full use of energy. In periods of rapid development, countries need an increment of energy supplies superior to those of periods of regular economic growth. Energy demand generated by the condition of Brazil as an emerging country reveals the need for orderly expansion of energy supply. In reverse, lack of energy planning effectively paralyzes a country and generates incalculable losses in national socioeconomic development. The Brazilian Constitution abandoned the notion of development tied to the simple increase in the gross domestic product. The respect for the environment, sovereignty, national development, and especially the constant and growing supply of energy, promotes the advancement of national economic agents, and quenches the simple accounting increase in energy supply. Constitutional principles condition the rational use of energy potentials, in ensuring adequate supply of energy for the entire national territory. The Brazilian Ministry of Mines and Energy, through its agencies, government offices and companies, establishes and formulates policies and guidelines for energy in Brazil, playing an important role in national energy planning. National development is enhanced by the good performance of the state agencies responsible for planning the energy sector

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Aborda a evolução histórica das liberdades individuais, a partir de apontamentos pertinentes ao constitucionalismo liberal, à formação do Estado de Direito e ao advento dos regimes democráticos amparados em direitos fundamentais. Pretende, quanto aos direitos fundamentais, mostrar diversas classificações, funções, critérios e conceitos, além da sistematização de gerações ou dimensões de direitos. Discorre acerca da teoria dos limites aos limites, ao lado de teorias correlatas em profícua confrontação doutrinária, tudo com fins a estruturar os conceitos basilares de direitos de liberdade, que orientam o restante da obra. Trata do cenário histórico-jurídico do surgimento da Análise Econômica do Direito (AED), consistente, sobretudo, no jusrealismo norte-americano, abordado, em paralelo, com o realismo jurídico escandinavo. Aplica conceitos e premissas de microeconomia ao Direito Penal, com ênfase para a investigação do comportamento criminoso empreendida pela Economia do Crime. Avança não apenas restrito à perspectiva teórica, trazendo dados empíricos e implicações concretas da teoria econômica dos delitos e das penas, que serão reconhecidos na evolução e redução da criminalidade, nas políticas de desarmamento, na estruturação empresarial do narcotráfico, bem como na otimização da administração penitenciária brasileira a fim de concretizar o preconizado pela legislação de execução penal. Desenvolve estudo a partir da leitura histórica do Direito Penal, passando pelos conceitos de sociedade complexa e de riscos. Analisa, após fixados tais pressupostos, algumas causas do processo de expansão do Direito Penal com vistas a identificar propostas alternativas ao hiperpunitivismo hodierno, preservando-se, assim, os direitos de liberdade que sustentam o Estado Democrático de Direito. Propõe uma desconstrução do conceito jurídico do princípio da eficiência administrativa, demonstrando como seu conteúdo normativo foi demasiadamente mitigado pela recepção precária dos respectivos elementos econômicos por parte da doutrina e da jurisprudência pátria. Ressalta a importância jurídica da eficiência econômica, devidamente harmonizada com os demais princípios constitucionais, por força do instrumental analítico da AED Positiva. Investiga criticamente algumas teorias sociológicas tendentes ao funcionalismo penal, sob referenciais de eficiência e de direitos de liberdade. Almeja, ao final, propor a AED como alternativa à expansão funcionalista e irracional dos tipos e sanções criminais, de modo que a aproximação entre Economia do Crime, eficiência econômica e Direito Penal contribua para blindar os direitos de liberdade das vicissitudes típicas da sociedade contemporânea

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This study aims to analyze how IFRN s process of interiorization contributes to endogenization of local and territorial development, more precisely in terms of graduates absorption into the labor market, form of inclusion and increase of income and welfare. The research premise is that the policy of interiorization and expansion of professional and technology education, by decentralizing opportunities, create a differential for the educational and professional trajectory of part of the graduates. This training, however, retain a relative connection with the productive potentialities in the coverage territories. This study includes a review of the literature on education and labor market and a discussion about the role of technical and professional formation for the local development versus the logic of the free market, considering the expansion of public spending for this purpose. For this study two sets of information and data have been collected primarily, with qualitative and quantitative nature. The research with qualitative focus, entitled Pesquisa de Avaliação da Expansão (PAEX), is constituted by series of open interviews applied to institutional representatives, with the purpose of knowing aspects of the interiorization repercussion in the local development process. The research designed to quantity analysis, entitled of the Pesquisa de Acompanhamento de Egressos (PAE), have been put in practice by applying online questionnaire with closed questions to IFRN s former students, aiming to know the form of insertion of the graduates in the labor market and the formation capacity of increasing the welfare, among other things. Empirical data and information fully confirmed the hypothesis of this study, for they really demonstrated that the expansion policy decentralizes opportunities and constitutes an important differential for the professional trajectory of a significant portion of the graduates. However, the graduates employability in the labor market in their territories of coverage is below expectations, due to structural problems of the local economy related to scarcity of jobs, difficulty in wage growth and in professional development. Complementarily, it has been observed institutional difficulties related to the recent implantation process of the policy of professional and technical education in the various campuses of the Institution

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The present study analyzes the expansion of Brazilian superior education, investigating how the public and the private sectors are inserted in this process, taking as analysis dimensions the philanthropic actions, the democratization and the mercantilism. The study had for general objective to analyze the dynamics of the expansion of superior education in Brazil, investigating how it configures the overlap between the public and the private in this process. More specifically was tried: a) to understand the process of participation of the non-state public, state and private sectors with lucrative goals in the expansion of superior education; b) to analyze the limits between the democratization and mercantilism in the process of expansion of superior education; c) to analyze the mechanisms that express the privatization in the process of expansion of superior education; d) to investigate, in a program of the government, how is materialized the overlap between the public and the private, in the expansion of superior education. In the development of the study, was adopted as theoretician and methodological way a historical and critical perspective, because is considered it allows to understand the mediations between the inquiry subject and the historical context in which it is developed, allowing, this way, the true explanation of the studied object. About the technician procedures, it was adopted documentary and bibliographical research. Also, secondary data were searched on the main governmental web sites (INEP, SISPROUNI, INEP, PNUD; IBGE) which produce statistics on superior education and sponsors of private institutions of superior education, as example ABMES and the Court of Accounts of the Union, amongst others. The study results had delineated a picture that allows to evidence that has been occurring, in the country, a process of expansion of superior education, marked for the articulated participation of the public state, private with lucrative ends and private without lucrative ends sectors, but it is distinguished in recent years the prevalence of the private sector with lucrative ends. In result, it is concluded that this process of expansion cannot be considered as dimension of the democratization because it occurs by means that move it away from the education as a right to be placed in the scope of the market, changing the right into a service that is appropriated by mercantile relations

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El presente trabajo tiene como objetivo analizar la implantación del Programa de Apoyo a Planes de Reestructuración y Expansión de las Universidades Federales (REUNI) así como su papel en la reconfiguración de la Universidade Federal do Rio Grande do Norte, resaltando sus repercusiones en la gestión y organización de la universidad. Para la realización del trabajo, entre los procedimientos técnicos, utilizamos la revisión de literatura, el análisis de documentos y las entrevistas semiestructuradas. La revisión bibliográfica ha permitido profundizar en conceptos importantes sobre la temática, priorizando los contenidos referentes a los conceptos de globalización y neoliberalismo; La reforma del Estado y sus repercusiones sobre las políticas de educación superior brasileña; directrices de documentos internacionales y nacionales que definieron la organización de este nivel de enseñanza. Los estudios indican, en relación a la expansión de la UFRN, que las metas pactadas del REUNI fueron atendidas casi en su totalidad. Sin embargo, cualitativamente, no se puede afirmar que el REUNI haya tenido un impacto positivo, pues además del incremento de plazas y de la creación de cursos nuevos, que en su mayoría fueron cursos nocturnos, ha habido un aumento sustancial en relación a la cantidad de alumnos por profesor, lo que demuestra que dicho incremento también se da por la racionalización de los recursos humanos y de la estructura físca existentes. Desde esta perspectiva, el REUNI originó varias modificaciones en la forma de gestionar los servicios en la UFRN, mereciendo especial atención la intensificación del proceso de transformaciones en la concepción de una gestión burocrática a una gestión desde la gerencia, resaltando la cultura instituída con el contrato de gestión. En ese sentido, la utilización de las metas y de los indicadores de desempeño pasa a adquirir cada vez más importancia como forma de acompañar y evaluar el cumplimiento de las acciones pactadas, pues de este cumplimiento depende la concesión de recursos financieros. Dentro de este contexto, el Programa se ha caracterizado por dar continuidad a las políticas de privatización para la expansión de la educación superior brasileña, provocando la inserción en las universidades públicas federales, de un modelo de organización fundamentado en el paradigma de la gerencia y la administración, que conlleva así, a la mercantilización de los bienes y servicios académicos

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The transplantation of organs and tissues presents itself as an important therapeutic option, both from a medical standpoint, the social or economic. Thus, the identification of variables that can interfere in the effectiveness of organs and tissues donation for transplantation needs to be investigated adequately, because it stands before increasing index of chronic and degenerative diseases in the population, what makes the waiting list for transplantation grow disproportionately and patients come to death without the opportunity of realization the treatment due to a lack of donors. In this context, has defined as objective of this study evaluate the factors associated with the effectiveness of organs and tissues donation for transplantation. It is a evaluative research, quantitative, prospective, with longitudinal design, developed at Central of Catchment, Notification and organ donation for transplant, Organ Procurement Organization and in six accredited hospitals to collect and transplantation of organs and tissues, in Natal/RN, between august 2010 and february 2011, after the approval of the Research Ethics Committee, under No. 414/10 and CAAE 007.0.294.000-10. The probabilistic sample without replacement was composed of 65 potential donors. It was used as an instrument of data collection a structured script non-participant observation of checklist type. Data were analyzed using descriptive statistics and presented in tables, charts, graphs and figures. For this, was used Microsoft Excel 2007 and statistical program SPSS version 20.0. To check the level of significance was chosen by applying the chi-square test (χ2) and Mann Whitney and caselas for less than five, it is considered the Fisher exact test. It was adopted as the significance level p-value <0.05. Among the surveyed it was observed that most of the individuals were male (50,8%), in the age group 45 years (53,8%), mean age of 42,3 years, minimum 5 and maximum 73 years (± 17,32 years). Single / widowers / divorced (56,9%), with up to completed elementary school (60,0%) in the exercise of professional activity (86,2%), catholic (83,1%) and residents in metropolitan region of Natal (52,3%). Was obtained donation effectiveness of 27,7%. There was no statistical significance between structure and effectiveness of the donation, but were observed inadequacies in physical resources (36,9%), materials (30,8%), organizational structure (29,2%) and human resources (18,5%). In the process, the maintenance phase (p= 0.004), diagnosis of brain death (p= 0.032), family interview (p≤ 0.001) and documentation (p= 0.001) presented statistical significance with effectiveness. Thus, it is accepts the alternative hypothesis of the study, in which is evidenced that the adequacy of the factors related to structure and process is associated to effectiveness of organs and tissues donation for transplantation. In this way, the effectiveness of organ and tissue donation ends in an essential way the rapidity and accuracy with which the donation process is conducted, requiring appropriate structure, with appropriate physical and material resources and skilled human resources to optimize the reduction of time and the suffering of those waiting for an organ or tissue transplant queued in Brazil