A distribuição F generalizada para selecionar modelos de sobrevivência com fração de cura

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Degradação fotocatalítica oxidativa do fenol utilizando carvão obtido da pirólise de diferentes biomassas

The modern industrial progress has been contaminating water with phenolic compounds. These are toxic and carcinogenic substances and it is essential to reduce its concentration in water to a tolerable one, determined by CONAMA, in order to protect the living organisms. In this context, this work focuses on the treatment and characterization of catalysts derived from the bio-coal, by-product of biomass pyrolysis (avelós and wood dust) as well as its evaluation in the phenol photocatalytic degradation reaction. Assays were carried out in a slurry bed reactor, which enables instantaneous measurements of temperature, pH and dissolved oxygen. The experiments were performed in the following operating conditions: temperature of 50 °C, oxygen flow equals to 410 mL min-1 , volume of reagent solution equals to 3.2 L, 400 W UV lamp, at 1 atm pressure, with a 2 hours run. The parameters evaluated were the pH (3.0, 6.9 and 10.7), initial concentration of commercial phenol (250, 500 and 1000 ppm), catalyst concentration (0, 1, 2, and 3 g L-1 ), nature of the catalyst (activated avelós carbon washed with dichloromethane, CAADCM, and CMADCM, activated dust wood carbon washed with dichloromethane). The results of XRF, XRD and BET confirmed the presence of iron and potassium in satisfactory amounts to the CAADCM catalyst and on a reduced amount to CMADCM catalyst, and also the surface area increase of the materials after a chemical and physical activation. The phenol degradation curves indicate that pH has a significant effect on the phenol conversion, showing better results for lowers pH. The optimum concentration of catalyst is observed equals to 1 g L-1 , and the increase of the initial phenol concentration exerts a negative influence in the reaction execution. It was also observed positive effect of the presence of iron and potassium in the catalyst structure: betters conversions were observed for tests conducted with the catalyst CAADCM compared to CMADCM catalyst under the same conditions. The higher conversion was achieved for the test carried out at acid pH (3.0) with an initial concentration of phenol at 250 ppm catalyst in the presence of CAADCM at 1 g L-1 . The liquid samples taken every 15 minutes were analyzed by liquid chromatography identifying and quantifying hydroquinone, p-benzoquinone, catechol and maleic acid. Finally, a reaction mechanism is proposed, cogitating the phenol is transformed into the homogeneous phase and the others react on the catalyst surface. Applying the model of Langmuir-Hinshelwood along with a mass balance it was obtained a system of differential equations that were solved using the Runge-Kutta 4th order method associated with a optimization routine called SWARM (particle swarm) aiming to minimize the least square objective function for obtaining the kinetic and adsorption parameters. Related to the kinetic rate constant, it was obtained a magnitude of 10-3 for the phenol degradation, 10-4 to 10-2 for forming the acids, 10-6 to 10-9 for the mineralization of quinones (hydroquinone, p-benzoquinone and catechol), 10-3 to 10-2 for the mineralization of acids.

Análise de desempenho de algoritmos de compressão de dados com perda para aplicações industriais

The great amount of data generated as the result of the automation and process supervision in industry implies in two problems: a big demand of storage in discs and the difficulty in streaming this data through a telecommunications link. The lossy data compression algorithms were born in the 90’s with the goal of solving these problems and, by consequence, industries started to use those algorithms in industrial supervision systems to compress data in real time. These algorithms were projected to eliminate redundant and undesired information in a efficient and simple way. However, those algorithms parameters must be set for each process variable, becoming impracticable to configure this parameters for each variable in case of systems that monitor thousands of them. In that context, this paper propose the algorithm Adaptive Swinging Door Trending that consists in a adaptation of the Swinging Door Trending, as this main parameters are adjusted dynamically by the analysis of the signal tendencies in real time. It’s also proposed a comparative analysis of performance in lossy data compression algorithms applied on time series process variables and dynamometer cards. The algorithms used to compare were the piecewise linear and the transforms.

Processo identitário e saberes docentes: um estudo a partir da prática de ensino no estágio do curso de pedagogia da UFRN

Esta investigación parte del interés en la comprensión de la cuestión de los conocimientos enseñanza, precisamente el conocimiento necesario para el profesor profesional relacionada enseñanza, es decir, cuáles son los conocimientos, los profesores a construir en su contexto de trabajo. Somos conscientes de que el escenario es un momento de importancia fundamental para el desarrollo del conocimiento inicial de la profesión docente y la construcción de la identidad profesional. Tratando de entender estos aspectos nos preguntamos: ¿Qué conocimientos de los futuros profesores construyen o se movilizan durante la práctica docente desarrollado en el escenario? Nuestro objetivo es entender el proceso de identidad de estudiantes Pedagogía UFRN e identificar el conocimiento construido sobre la práctica docente desarrollada durante el entrenamiento supervisado de dicho curso. Se trata de una investigación cualitativa, y tenía como instrumento de recolección de datos, entrevistas semi-estructuradas con diez (10) en 2014.1 académicos que habían ocupado la práctica docente en el entrenamiento supervisado. Las entrevistas fueron sometidas a análisis de contenido propuesto por Bardin (2011). Como marco teórico, los autores también apoyan en tan Tardif (2012), Pimenta (2012), Nóvoa (1995), Perrenoud (2002), entre otros, se trata de la enseñanza de conocimientos dentro de la profesionalización docente, estableciendo relación con el proceso de identidad. Los resultados indican que, en lo que respecta a la identidad profesional, estudios teóricos en el curso de formación inicial, junto con las experiencias vividas en su mayoría en el escenario, contribuyeron a cambiar lo que los estudiantes sabían acerca de ser un maestro. Por lo tanto, algunos han fortalecido la identidad con la profesión, mientras que otros han renunciado a invertir en la carrera docente. En cuanto a conocimiento construido, se puede decir que los alumnos se dan cuenta de la pluralidad de conocimientos necesarios para una profesión tan compleja como la enseñanza. Sin embargo, a modo de síntesis, este conocimiento a su vez a aprender a planificar lecciones considerando las necesidades de los estudiantes y su contexto social. Los participantes declaran saber cómo llevar a cabo la mediación del aprendizaje a través del diálogo y actividades bien estructuradas y afecto contribuye al aprendizaje. En este sentido, se entiende que las construcciones de conocimiento en el escenario se articularon a reflexionar sobre su propia práctica e indican lo que era más importante en términos de aprendizaje de la percepción de los estudiantes. Sobre la base de este entendimiento, creemos que los momentos de observación (primero paso en el escenario) y el muy regencia podrían considerarse en el proceso de formación, para que los estudiantes se registre el aprendizaje proporcionado por la práctica. Es necesario, por tanto, que los estudiantes investiguen su propia actividad pedagógica, convirtiendo sus conocimientos en una continua construcción y reconstrucción de sus identidades a partir de la importancia social que conceden a la enseñanza.

Aplicação e otimização de métodos eletroquímicos combinados para remoção e determinação de cromo hexavalente em efluentes simulados

Hexavalent chromium is a heavy metal present in various industrial effluents, and depending on its concentration may cause irreparable damage to the environment and to humans. Facing this surrounding context, this study aimed on the application of electrochemical methods to determine and remove the hexavalent chromium (Cr6+) in simulated wastewater. To determine was applied to cathodic stripping voltammetry (CSV) using ultra trace graphite electrodes ultra trace (work), Ag/AgCl (reference) and platinum (counter electrode), the samples were complexed with 1,5- diphenylcarbazide and then subjected to analysis. The removal of Cr6+ was applied electrocoagulation process (EC) using Fe and Al electrodes. The variables that constituted the factorial design 24, applied to optimizing the EC process, were: current density (5 and 10 mA.cm-2), temperature (25 and 60 ºC), concentration (50 and 100 ppm) and agitation rate (400 and 600 RPM). Through the preliminary test it was possible the adequacy of applying the CSV for determining of Cr6+, removed during the EC process. The Fe and Al electrodes as anodes sacrifice showed satisfactory results in the EC process, however Fe favored complete removal in 30 min, whereas with Al occurred at 240 min. In the application of factorial design 24 and analysis of Response Surface Methodology was possible to optimize the EC process for removal of Cr6+ in H2SO4 solution (0.5 mol.L-1), in which the temperature, with positive effect, was the variable that presented higher statistical significance compared with other variables and interactions, while in optimizing the EC process for removal of Cr6+ in NaCl solution (0.1 mol.L-1) the current density, with positive effect, and concentration, with a negative effect were the variables that had greater statistical significance with greater statistical significance compared with other variables and interactions. The utilization of electrolytes supports NaCl and Na2SO4 showed no significant differences, however NaCl resulted in rapid improvement in Cr6+ removal kinetics and increasing the NaCl concentration provided an increase in conductivity of the solution, resulting in lower energy consumption. The wear of the electrodes evaluated in all the process of EC showed that the Al in H2SO4 solution (0.5 mol.L-1), undergoes during the process of anodization CE, then the experimental mass loss is less than the theoretical mass loss, however, the Fe in the same medium showed a loss of mass greater experimental estimated theoretically. This fact is due to a spontaneous reaction of Fe with H2SO4, and when the reaction medium was the NaCl and Na2SO4 loss experimental mass approached the theoretical mass loss. Furthermore, it was observed the energy consumption of all processes involved in this study had a low operating cost, thus enabling the application of the EC process for treating industrial effluents. The results were satisfactory, it was achieved complete removal of Cr6+ in all processes used in this study.

Materiais bionanocompósitos a base de argilominerais e hidróxidos duplos lamelares como sistemas de liberação de fármacos

Bionanocomposites systems clay base (montmorillonite and sepiolite), layered double hidroxides and biopolymers (carboxymethylcellulose and zein) were evaluated as topical delivery systems with antibacterial activity and as oral delivery systems. For this study, neomycin, a topical antibiotic, indicated mainly for open wound infections. The drug amoxicillin, an antibiotic indicated mainly for throat infections, were also used in this study. Both antibiotics were used as model drugs. Initially, drugs were incorporated directly into the biopolymer matrix, comprising the combination of carboxymethylcellulos and zein, being conformed as movies and balls and evaluated for their antibacterial activity and controlled release simulating gastrointestinal fluids. Moreover, hybrids materials have been prepared where the neomycin drug was incorporated into the lamellar inorganic solids, such as montmorillonite by ion exchange reaction, and the fibrous type, such as sepiolite by adsorption in aqueous solution. But the drug amoxicillin was incorporated into layered double hydroxides by anion exchange and montmorillonite by cation exchange. The resulting hybrids were in turn combined with the biopolymer matrix yielding bionanocomposites shaped materials such as films were tested for their antibacterial activity, and the shaped materials beads were tested for their release in the gastrointestinal fluids. Through the analysis of various physico-chemical techniques, we observed the interactions between the studied materials, the formation of hybrids materials, obtaining the bionanocomposites materials and material efficiency when applied in controlled release of drugs both topical and use oral mainly influenced by the presence of zein, are promising as topical delivery systems and oral drugs.

O Programa Nacional Biblioteca da Escola - PNBE: da gestão ao leitor na educação infantil de Natal-RN

This study aims to investigate the process of implementation of Programa Nacional Biblioteca da Escola, PNBE, and the reader's training on Childhood Education level in Natal. The promotion of literary reading is the opportunity of inclusion in a world that is connected to citizenship, to human rights and social justice, because the reading is the way which gives meaning to the life and, therefore, it is a right for everybody. The study is characterized as a qualitative research with evaluative approach. The methodological procedure that constitutes this corpus took place in three stages: the first one was about the analysis of laws and documents of national public policies for the reading promotion; questionnaires were applied by Managing Committee - Natal/RN to CMEIs and the available websites from MEC that provide distribution of the acquis; in the second stage, we adopted the semi-structured interview as a methodological procedure elaborated with open questions that focus on the program management and to the acquis of PNBE; and in the third step we visited the 21 centers of childhood education in Natal for interviewing and to do the exploratory observation in places of reading. The Informant actors in this research are: the advisors of SME - Natal and FNDE, managers and teachers in Municipal Childhood Education Centers who totalize 30 informants. This theoretical and methodological framework follows the studies of Amarilha (1993; 1994; 2002; 2006; 2010; 2012), Bardin (2001), Bogdan; Biklen (1994), Castro (2007; 2008; 2012), Demo (2000; 2006; 2008), Fischer (2006), Moreira; Caleffe (2008), Paiva (2008; 2012), Secchi (2010; 2012), Soares (2003; 2008) and Zilberman (2001; 2003; 2008). The analysis indicates that decentralization strategy which is adopted in public management model will transfer responsibilities and assumption of the PNBE, exempting the actors to planning actions ensuring the efficiency and efficacy implementation on reading policy to national and municipal levels. The qualified acquis that is distributed by MEC reaches every Childhood Education center and does not depend on teacher's desire or it action, only a few of them know about it and they do not have information about the PNBE, neither receive specific training in order to articulate it to the practice of reading with children from Childhood Education. The reading project implemented by private education system in Natal overlaps the PNBE, making it invisible. The reading places that are available for that schooling stage are summarized to the reading corners. In some CMEI, books remain stored in boxes or they are locked in the closet, out of use to the teachers and students. Thus, care for the acquisition, selecting acquis, and a preoccupation to the supply of the reading and books for this education level are lost into volumes of closed boxes, teachers are jettisoned to this process and children do not have any enchantment to the reading or books. In this context, this paper draws attention to how much we should still investigate in order to understanding the perspectives, stresses and challenges from public policies for the reading promotion in our country. We hope that the research will help to improve the management model of the PNBE, ensuring the reading democratization and therefore the reader's training in early Childhood Education.

O Programa Nacional Biblioteca da Escola - PNBE: da gestão ao leitor na educação infantil de Natal-RN

This study aims to investigate the process of implementation of Programa Nacional Biblioteca da Escola, PNBE, and the reader's training on Childhood Education level in Natal. The promotion of literary reading is the opportunity of inclusion in a world that is connected to citizenship, to human rights and social justice, because the reading is the way which gives meaning to the life and, therefore, it is a right for everybody. The study is characterized as a qualitative research with evaluative approach. The methodological procedure that constitutes this corpus took place in three stages: the first one was about the analysis of laws and documents of national public policies for the reading promotion; questionnaires were applied by Managing Committee - Natal/RN to CMEIs and the available websites from MEC that provide distribution of the acquis; in the second stage, we adopted the semi-structured interview as a methodological procedure elaborated with open questions that focus on the program management and to the acquis of PNBE; and in the third step we visited the 21 centers of childhood education in Natal for interviewing and to do the exploratory observation in places of reading. The Informant actors in this research are: the advisors of SME - Natal and FNDE, managers and teachers in Municipal Childhood Education Centers who totalize 30 informants. This theoretical and methodological framework follows the studies of Amarilha (1993; 1994; 2002; 2006; 2010; 2012), Bardin (2001), Bogdan; Biklen (1994), Castro (2007; 2008; 2012), Demo (2000; 2006; 2008), Fischer (2006), Moreira; Caleffe (2008), Paiva (2008; 2012), Secchi (2010; 2012), Soares (2003; 2008) and Zilberman (2001; 2003; 2008). The analysis indicates that decentralization strategy which is adopted in public management model will transfer responsibilities and assumption of the PNBE, exempting the actors to planning actions ensuring the efficiency and efficacy implementation on reading policy to national and municipal levels. The qualified acquis that is distributed by MEC reaches every Childhood Education center and does not depend on teacher's desire or it action, only a few of them know about it and they do not have information about the PNBE, neither receive specific training in order to articulate it to the practice of reading with children from Childhood Education. The reading project implemented by private education system in Natal overlaps the PNBE, making it invisible. The reading places that are available for that schooling stage are summarized to the reading corners. In some CMEI, books remain stored in boxes or they are locked in the closet, out of use to the teachers and students. Thus, care for the acquisition, selecting acquis, and a preoccupation to the supply of the reading and books for this education level are lost into volumes of closed boxes, teachers are jettisoned to this process and children do not have any enchantment to the reading or books. In this context, this paper draws attention to how much we should still investigate in order to understanding the perspectives, stresses and challenges from public policies for the reading promotion in our country. We hope that the research will help to improve the management model of the PNBE, ensuring the reading democratization and therefore the reader's training in early Childhood Education.

Caracterização de genes de reparo de DNA em cana-de-açúcar

Sugarcane is an important culture for Brazil that holds almost half of all worldwide productivity. Plants face many challenges, because of biotic and abiotic stresses presents in the production field, which could prevent plants from reaching their genetic potential. As consequence, those stresses can generate Reactive Oxygen Species – ROS – that can cause damages on DNA. Another consequence of stress is the early-flowering process, which contributes for a reduction on yield. In this context, the aim of this work is to characterize ScMUTM1 and ScMUTM2, two DNA glycosylases belonging to base excision repair pathway; and identify genes potentially related to stress and DNA repair in two sugarcane cultivars with contrasting flowering phenotypes. The characterization of the DNA glycosylases included the construction of vector to over express the recombinant proteins ScMUTM1 and ScMUTM2; they will be used in a near future to purification of these proteins and use in enzymatic assays. It was also made a phylogenetic reconstruction of this gene in plants and analysis of its promoter. With the phylogenetic analysis, it is possible to observe the presence of these genes grouped inside a branch with monocots and another one with dicots. This suggests that the duplication of this gene probably occurred after the separation of these two groups. The analysis of the promotor of MUTM shows of the presence of stress-related regulatory motifs at ScMUTM2 promoter, when compared with ScMUTM1. This may suggests that ScMUTM1 might be suffering sub functionalization process. After the analysis of microarrays data, it is observed an up-regulation from some stress-related genes in one of the conditions analyzed, related to early flowering process.

Caracterização de genes de reparo de DNA em cana-de-açúcar

Sugarcane is an important culture for Brazil that holds almost half of all worldwide productivity. Plants face many challenges, because of biotic and abiotic stresses presents in the production field, which could prevent plants from reaching their genetic potential. As consequence, those stresses can generate Reactive Oxygen Species – ROS – that can cause damages on DNA. Another consequence of stress is the early-flowering process, which contributes for a reduction on yield. In this context, the aim of this work is to characterize ScMUTM1 and ScMUTM2, two DNA glycosylases belonging to base excision repair pathway; and identify genes potentially related to stress and DNA repair in two sugarcane cultivars with contrasting flowering phenotypes. The characterization of the DNA glycosylases included the construction of vector to over express the recombinant proteins ScMUTM1 and ScMUTM2; they will be used in a near future to purification of these proteins and use in enzymatic assays. It was also made a phylogenetic reconstruction of this gene in plants and analysis of its promoter. With the phylogenetic analysis, it is possible to observe the presence of these genes grouped inside a branch with monocots and another one with dicots. This suggests that the duplication of this gene probably occurred after the separation of these two groups. The analysis of the promotor of MUTM shows of the presence of stress-related regulatory motifs at ScMUTM2 promoter, when compared with ScMUTM1. This may suggests that ScMUTM1 might be suffering sub functionalization process. After the analysis of microarrays data, it is observed an up-regulation from some stress-related genes in one of the conditions analyzed, related to early flowering process.

Estudo da influência da adição de níquel em alumina pela rota da metalurgia do pó

Ceramic materials alumina basis have been widely used in structural components, mainly because owning properties such as high hardness, chemical inertness and good wear resistance, however, the low toughness is a factor that compromises its use in many other applications, featuring the addition of nickel as a possible solution to this problem, in this context, this work aims to study the addition of nickel alumina using the route of powder metallurgy processing of the material. The percentage of nickel were added 2, 4 and 6 wt%; and each composition to high energy milling in a planetary mill was performed for 2, 4, 9 and 16h. Subsequently, the samples were compacted at 300 MPa and sintered in a vacuum oven at 1400⁰C for 2h. The samples were characterized as the physical and mechanical properties, observing, in general, an improvement in sinterability of the material with increasing grinding time and nickel content, and mixing with a decrease of porosity and increase of hardness, density values above 80% of theoretical were obtained. The milling time of 4 hours and addition of 2% nickel, particularly if achieved higher hardness (HV 1068.7 +/- 32.6) and density of about 99% theoretical density.

Estudo da influência da adição de níquel em alumina pela rota da metalurgia do pó

Ceramic materials alumina basis have been widely used in structural components, mainly because owning properties such as high hardness, chemical inertness and good wear resistance, however, the low toughness is a factor that compromises its use in many other applications, featuring the addition of nickel as a possible solution to this problem, in this context, this work aims to study the addition of nickel alumina using the route of powder metallurgy processing of the material. The percentage of nickel were added 2, 4 and 6 wt%; and each composition to high energy milling in a planetary mill was performed for 2, 4, 9 and 16h. Subsequently, the samples were compacted at 300 MPa and sintered in a vacuum oven at 1400⁰C for 2h. The samples were characterized as the physical and mechanical properties, observing, in general, an improvement in sinterability of the material with increasing grinding time and nickel content, and mixing with a decrease of porosity and increase of hardness, density values above 80% of theoretical were obtained. The milling time of 4 hours and addition of 2% nickel, particularly if achieved higher hardness (HV 1068.7 +/- 32.6) and density of about 99% theoretical density.

Publicidade em celulares utilizando o sistema de busca de perfil

ARAÚJO, B. G. ; VALENTIM, R. A. M. . Publicidade em celulares utilizando o sistema de busca de perfil. Holos, Natal,v. 1, p. 109-118, 2010. Disponível em: dex.php/HOLOS/article/viewFile/208/311>

Programa de aquisição de alimentos (2003-2010): avaliação da implementação pela CONAB no Rio Grande do Norte

This thesis aimed to evaluate the implementation of the Food Acquisition Program(PAA) through CONAB RN in the period of 2003-2010 with the perception of all agents involved in the implementation of the government program.For the methodological trajectory it was adopted a descriptive bibliographical and documentary approach with triangular qualitative and quantitative, also called evaluative research.The theoretical model was supported by the authors Draibe (2001), Aguilar and Ander-Egg (1994) and Silva(2001), among others, that focused on family farming and evaluation of implementation of public policy having as a category of analysis the size implementation of policy and the latter divided into 10 theoretical dimensions.The universe consisted of three groups: the first were the managers and technicians from CONAB(RN and Brasilia), totaling 15 subjects. The second group was of associations/cooperatives that participated in the programin 2010, totaling a sample in each access of 15 representatives. The third group of subjects totaled with 309 representatives of governmental and non-governmental organizations that received donations of food for the same period. Semi-structured interviews and forms were adopted as instruments of data collection.The data were processed qualitatively by the analysis of content (interviews and documents) and quantitatively by means of statistical tests that allowed inferences and adoption of frequencies. Among the key find ingests that the program is not standing as a structure supported by planning. The interests of the performers do not necessarily converge with the objectives of the Food Acquisition Program (PAA). A shockof goals was identified (within the same program) when comparingthe financial agent (Ministry of Rural Development and of Social Development and Fight Against Hunger Ministry r) and the executor, CONAB/RN. Within the assessed dimensions, the most fragileis the sub-managerial decision-making and Organizational Environment and internal assessment, still deserves attention the sizeof logistical and operational Subsystem, as this also proved weak.The focusin the quest toexpand thequantificationof the resultsof theFood Acquisition Program (PAA)by CONAB/RN does forget a quality management focused on what really should be:the compliance with the institutional objectives of the government program.Finally, the perspective for the traded implementation should be re-examined because excessive discretion by managers along with technical staff has characterized there al role of the Food Acquisition Program (PAA) as public policy. We conclude that the implementation model, which apparently aggregates values to the benefitted citizens, has weakened the context of work on family farms having the management model of the implementation process be reviewed by the Federal Government and point too ther paths, which have as a guide line the emancipation and developmentof the field or in the field andat the same time enables the reduction of nutritional deficiency of beneficiaries in a balanced and coherent way

Coevolução e as práticas isomórficas de gestão: um estudo sobre os processos de mudanças institucionais no Instituto Federal de Educação, Ciência e Tecnologia do RN

The Federal Institution for Education, Science and Technology, in its historical path, has been living different changes. The transformations occurred along the way have been determined by coercive forces from the institutional environment, which has became more and more broad and complex throughout the time, obtaining diverse characteristics and new elements such as non institutional factors1 which started to contribute with the other changes. In this context, this work aims to study the isomorphic practices of the managers in the institutional changes process of the IFRN in 1998 and 2008, as of a theoretical coevolutionary perspective (CHILD; RODRIGUES; LEWIN; CARROL; VOLBERDA, 2003). This theory brings a new point of view for the organization analysis to the organizational studies, since it offers a non deterministic and non linear lection of the evolution process, which means, a coevolution. Thus, the organizations and their institutional and non institutional environment auto evolve, auto organize and auto reproduce. Therefore, the institutional and non institutional factors of the macro environment keep a continuous interdependence relationship with the organizations. For the means of this study, it is important to understand that is impossible to comprehend the object, the isomorphic practices, without considering that the previous institutional changes and its evolutions, its continuations and discontinuations, important in the coevolution process. As such, to call upon the institutional historical track is a fundamental aspect to materialize this study, for the recursive movement is indeed present in the coevolution. Another important point to make this research effective is that it is not possible to abdicate from the hologramatic view2 of this study, which considers the object, the isomorphic practices, part of the whole and this whole is also in the parts, therefore it is impossible to comprehend the object of study outside the context where it belongs. With this, as of the objective previously proposed, it is necessary to describe the characteristics of coevolution of the institutional changes related in 1998 and 2008; analyze the dynamic of the isomorphic mechanisms in its respective institutional change process; and describe the lessons learned which the isomorphic practices left to the IFRN, regarding its benefits and difficulties. All these transformations happened through coercive forces3 of the institutional environment. As of the Nineties, these forces became stronger, the environment became broader and more complex, with the emergency of new environmental factors. This study proposed to study the managing process and its practices, related to the micro environment, although it is required to articulate these actions, the demands and requirements from the macro environment. To make this research effective, semi structured interviews have been conducted with the managers who participated in both institutional change processes. In the results analysis, it has been possible to verify the particularity of each change, the one from 1998 with a strong normative action of the managers against coercive forces from the government for the search of recognition and the institutional legitimation and the one in 2008, which has been characterized by the normative action by managers in agreement with the coercive forces from the government, in favor of the government policy for the technological professional education. However, the results analysis it is possible to notice the evidence of a belonging feeling from the interviewed managers