Transition metal ion co-ordination in hydrophilic polymer membrane

This thesis is concerned with the investigation of transition metal (TM) ion complexation with hydrophilic membranes composed of copolymers of 4-vinyl pyridine & 4-methyl-4'vinyl- 2,2'-bipyridine with 2-hydroxyethyl methacrylate. The Cu(II), CoCII) & Fe(II) complexes with these coordinating membranes were characterised by a variety of techniques, in order to assess the effect of the polymer on the properties of the complex, and vice versa. A detailed programme of work was instigated into the kinetics of formation for the polymer-bound tris(bipyridyl) iron(II) complex; the rate and extent of complex formation was found to be anion-dependent. This is explained in terms of the influence of the anion on the transport properties and water content of the membrane, the controlling factor in the development of the tris-complex being the equilibrium concentration of Fe(II) in the gel matrix. A series of transport studies were performed with a view to the potential application of complexing hydrogel membranes for aqueous TM ion separations. A number of salts were studied individually and shown to possess a range of permeabilities; the degree of interaction between particular metal-ion:ligand combinations is given by the lag-time observed before steady-state permeation is achieved. However, when two TM salts that individually display different transport properties were studied in combination, they showed similar lag-times & permeabilities, characteristic of the more strongly coordinating metal ion. This 'anti-selective' nature thus renders the membrane systems unsuitable for TM ion separations. Finally, attempts were made to synthesise and immobilise a series of N ,0-donor macrocyclic ligands into hydrogel membranes. Although the functionalisation reactions failed, limited transport data was obtained from membranes in which the ligands were physically entrapped within the polymer matrix.

Phenols and aromatic amines as thermal stabilizers in polyolefin processing

Scavenging of C- and O-centered free radicals is mandatory in processing stabilization of polypropylene. Phenolic antioxidants act principally as O-radical scavengers only. Aromatic amines, N,N'-disubstituted 1,4-phenylenediamines (PD) and 4,4'disubstituted diphenylamines (DPA), scavenge both C- and O-centered radicals and have consequently a broader activity spectrum. PD cannot be used, however, in polypropylene because of formation of strongly discoloring and staining sacrificial transformation products. Such products formed from DPA have even more discoloring properties. A good processing stability and acceptable extent of discoloration can be achieved by blends of phenols with 4,4'-di-tert.octyl DPA. The effect is considered as a beneficial cooperation between the two chain-breaking antioxidants involving interactions with amine-based transformation products.

From Anti-equilibrium to The Socialist System and Beyond

This essay attempts to understand János Kornai’s works from a political economy perspective. It argues that Kornai has significantly contributed to the formation of a new paradigm of political economy. The main endeavor of Kornai has been the combination of analytical concepts of economics with the empirical description of real economies. After a certain period of theoretical experimentation János Kornai formulated his research program that can be called the shortage economy explanation of the socialist system. The Economics of Shortage and The Socialist System have created a new theoretical paradigm in a framework in which it has become possible to establish a connection between the analytical and empirical, universal and historical aspects of the theory studying the socialist system as a real economic entity. János Kornai has built his analysis of the socialist system on the primary role of politics in the creation of economic institutions. In his present work on capitalism he has extended this thesis to the capitalist system. This seems to be an important contribution of his to a new political economy paradigm that is just in the process of formation.

Metrópole digital: o jovem aprendiz na educação tecnológica

This thesis was elaborated in the scenario of Digital Metropolis Institute (IMD) – a supplementary unit at the Federal University of Rio Grande do Norte in the training of personnel with technical and higher level courses whose technical level training is associated with a process of digital inclusion, with the purpose of attracting young people to this area, with emphasis on Software and Hardware Development. It aims to investigate the cognitive change of young apprentice on technological education and his/her entrance into the labor market, through the formation and the social inclusion proposed by the Instituto Metrópole Digital; understanding the juvenile subjectivity production through the Instituto Metrópole Digital’s education by performance in the labor market; recognizing the Brazilian professional qualification public policies for youth and identifying the role of Tutoring in the learning process during the course of formation of the young apprentice of the technological education proposed by the Instituto Metrópole Digital.The clipping of the object of investigation was the process of cognitive change and constitution of subjectivity of the young apprentice in information technology (IT) in the IMD. It was searched support in theory Freireana as proposal that problematizes the policies and the process of formation and professional qualification, in the perspective of a citizen and liberating consciousness. By qualitative and ethnographic nature, descriptive-explanatory, it counts with the participation of young people, high school students from public and private schools, aged between 15 and 18 years. There are strong aspects: a cognitive change on the young apprentice of technological education onto overdrive high school as the student of the Instituto Metrópole Digital; it happened the social integration for those who remain in the course, both in the neighborhood where they reside and at school where he attended high school, the young man is recognized and becomes reference to other young, favoring him a life projection which when the activities of mentoring is learning motivator, it exerts a positive influence to the young on the continuity of studies, it provides intellectual and institutional affiliation and continuity in the investments to the academic life for a better insertion in the labor market, which refers to the modification of the life project-invest in academic training, in exchange for a technical job in the labor market. There are weak aspects: the absence of professor in the course, in his most important role, which involves awareness of his/her condition in action, in explicit position that the professional practice constitutes as this constitution requires reciprocity of its students and the context in which it operates; fragile formation of mentoring, absence of dialogues in the classroom that favors the formation of subject learning, mainly in guiding action, mediator of the young; There is a lack of methodological proposal to develop real projects on the labor market with problem solving and collaborative learning. It considers that without converting information into knowledge cannot discern clearly enough that there is no direct causal relationship between Professional and technological Education and the level of employability of the young worker certificate. It suggests to the evasion: a greater knowledge of the reality of the student of the Institute Metropolis Digital; better knowledge of youth and their expectations of life project; the Tutoring will be Teacher-tutor; investing in employability conditions effective the young into the labor market.

A formação da habilidade de explicar no contexto do ensino médio: o que dizem os livros? o que pensam os professores?

The discussion about explanation in knowledge has been made for decades. Through this course, we present different ways of understanding about what is to explain the history: the primitive ethnographic description, the chronicler, the positivist construction of a historical science and historiography of the second half of twentieth century. Nowadays this discussion needs to be continued both in the general framework of scientific practice as within educational institutions as cognitive - linguistic ability. The focus of our research is by the second approach, which is the explanation as cognitive - linguistic ability. The formation of skills, among them, the explaining one, has been studied by the authors as: (NÚÑEZ 2012; JORBA et al, 2000; SANMARTÍ and IZQUIERDO 2000). This research had as general purpose: to study the processes of formation of the ability to explain social revolution in history classes in high school, by teachers opinion and by content as this theme among history books, in order to support the continuing education of history teachers for high school. Th e qualitative based research used instruments of data collection and analysis protocol for the books prepared for this study, and interviews with teachers. For this, the techniques of content analysis and discourse referenced in Bardin and Orlandi , respec tively were used. At first, the instruments for data collection were developed and validated, while in the second, the data were collected, organized and analyzed. From the answers to the questions of the study results shows that: a) in the analyzed books - do not express the work with the definition of Social Revolution, considering the processes for the formation of this definition, the predominant type of explanation has characteristics of multicausality; proposals for teaching are characterized as eclec tic; b) while teachers speech - it is important the students know the definition of Social Revolution, the ability to explain is more linked to didactic explanation in the classroom than the explanation through epistemological sense. These results indicate that the formation of the ability to explain Social Revolution based in Cultural History approach, are not expressed in the analyzed books, but they can serve as an important resource for this purpose. The discourse of teachers has a potential pointing to the possibility of teaching organization and learning process, based on training or upgrading the explanation skill from the theory of stepwise formation of mental actions and concepts by P.Ya. Galperin. For this purpose, the research constitutes a contri bution to support the continued education of history teachers in high school.

O estrategista em perspectiva: um estudo sobre o processo de formação de estratégias no ramo varejista de construção civil de Natal e região metropolitana

The strategy research have been widespread for many years and, more recently, the process of formation of the strategies in the individual perspective has also gained attention in academia. Confirming this trend, the goal of this study is to discuss the process of formation of the strategies from an individual perspective based on the three dimensions of the strategic process (change, thinking and formation) proposed by De Wit and Meyer (2004). To this end, this exploratory-descriptive study used the factor analysis techniques, non-parametric correlation and linear regression to analyze data collected from the decision makers of the 93 retail in the industry of construction supplies in the Natal and metropolitan area. As a result, we have that the formation factors of the dimensions investigated were identified in the majority, thus confirming the existence of paradoxes in the strategic process, and that there is a relationship between logical thinking and deliberate formation with the hierarchical level of decision makers.

Mediação biográfica: propostas para a formação docente

This work aims at studying the biographical mediation taken as the progress of people in formation process who develop a biographical work on their own experiences with the help of a former (PASSEGGI, 2006, 2011). The research was carried out on a curricular component from Curso de Formação Inicial e Continuada (initial and continuous process of formation of teachers) with teachers from public schools developed by Instituto Federal de Educação do Rio Grande do Norte (IFRN/ Ipanguaçu). The target audience featured diversity of professionals and experiences of formation. The general objective studied the potentials of procedures and devices used to mediate the reflection about the necessary knowledge to teaching practice based on their own experiences (auto-biographical) and the experience from the others (hetero-biographical). The study tried to respond to the following questions: how do teachers in formation relate themselves to the knowledge from experience? What procedures and devices contribute on the teachers‟ formation on the three different dimensions of biographical mediation (initiatory, maieutic, hermeneutics)? How to provide the auto-formation and hetero-formation? The theories and methods of this work are based on studies and researches that place the person in formation in the center of investigation and formation and analyze their reflective, re-inventive and self-re-inventive capacity. (FREIRE, 1987, 1996, 2001, 2011; JOSSO, 2008, 2010, 2012; DELORY-MONBERGER, 2006, 2008, 2012; CHARLLOT, 2000; CATANI, 2001; PASSEGGI, 2008; 2010; 2011; 2012). We selected six teachers who participate entirely on the meetings of the program. They discussed on the study topics, shared narrations that integrate their formation and the themes related to the course. The empirical material is composed by the narrations of the six participants and hearing boards done by themselves at the moment of the narration sharing process. The analysis followed three steps: a) the path of the program and the procedures of biographical mediation; b) the relations former/teacher on the three dimensions of biographical mediation; c) the hearing board as a device of biographical mediation. We concluded that the procedures and devices used for biographical mediation made possible specific learnings that are sources for the practice of initial and continuous teachers‟ formation, as well as for the formation of the former-researcher about the work with autobiographical narrations. Thus, it allow the co-investment of participants into the process of auto-formation and hetero-formation.

Síntese e caracterização de catalisadores baseados em vermiculita modificada com ferro: aplicação em processos do tipo foto-fenton

Clays are materials with specific properties that make them promising for various studies. In this work we used the vermiculite clay as support for iron compounds, in order to obtain promising materials for application in the heterogeneous type photo-Fenton process. In all, the study included six solid, starting from the vermiculite (V0) was obtained calcined vermiculite (V0-C), the mixed material (V0/β-FeOOH) formed by vermiculite more akaganeite, exchanged vermiculite (v0t-C), vermiculite impregnated Wet (V0u-C) and V0u-CL that is the solid obtained by impregnating with a back washing. The solids of the study had their physical and chemical characteristics investigated by the following characterization techniques: X-Ray Diffraction (XRD), Infrared Spectroscopy (IR), Energy Dispersive Spectroscopy (EDS), X-Ray Fluorescence Spectroscopy (XRF), UV-Vis by Diffuse Reflectance (DR UV-Vis), Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM). The V0 material showed three distinct phases, which are the very vermiculite, hidrobiotite and biotite, the last two phases are part of the geological of formation process vermiculite. The solids obtained after the modification showed an increase in the amount of iron present in the clay, these being quantities important for application in photocatalysis. The micrographs and EDS data, show that after treatment of addition of the metal , the iron was intercalary in structure of vermiculite for solid V0t-C and V0u-C, however, this did not occur with mixed material. In the photoFenton process, was observed a maximum removal of 88.8% of the dye methylene blue coloring for the catalyst V0/β-FeOOH, while for the other solids was obtained values between 76.8 and 62.6%, compared to 37.8% of discoloration without the presence of catalyst. Therefore, it is concluded that the vermiculite clay presents as a good catalyst and iron support for the, beyond of presenting a low cost because of its high abundance.

Ensino da ultrassonografia diagnóstica a partir do ciclo básico do curso de medicina utilizando livro digital multimídia

Currently, the diagnostic ultrasound is inserted in various areas of medical action and carried out by many medical professionals, from which militate directly in the image area, such as radiologists and sonographers, but also by gynecologists, pediatricians, neurologists, general practitioners, endocrinologists, angiologists, orthopedists, rheumatologists, urologists, general and vascular surgeons. It is well known that the medical professional, for the exercise of its mission, requires a broad set of skills, competencies and attitudes developed and exercised during their training period. Living with medical students over nearly 20 years in hospital environment, I noticed gaps in the learning process by the students about what is diagnostic ultrasound and its applications, demonstrating failures as understanding the basic acoustic ultrasound, difficulties in identifying of anatomical structures in ultrasound images and inability in requests examinations and interpretations of images and reports. Based on these findings, it was developed in this Professional Masters a multimedia digital book that exposes what the ultrasound as a diagnostic modality imaging, dealing with its historiography and its physical/acoustic concepts, relating the process of formation of the ultrasound image, discussing about the features of sonographic equipments and their embedded technologies and highlighting its diagnostic applications , the latter presented through videos which will be described aspects of captured ultrasound images. This book will be available for access in digital format, serving as a teaching tool in medical education since the beginning of the course, so that can be used in conjunction with the discipline of Gross Anatomy, offered in the basic cycle of the Medicine Undergraduate Course of the Federal University of Rio Grande do Norte (UFRN).

Leitura do mundo no rap: uma análise bakhtiniana de práticas leitoras no ensino fundamental

This study aims to propose two didactic sequences on the rap songs to the process of formation of critical reflective reader, in the elementary school – in 6th and 9th grade classes. The theoretical foundations that have supported the work are related to the Bakhtin Circle propositions, especially the notions of language as a social ideological discourse; responsive reading; discursive genre and social voices. As for the methodological guidance, it is characterized by adopting the interpretativist paradigm of socio-historical base, in addition to positioning in the large field of Applied Linguistics, whose primary focus is specifically located language. In the selected enunciations to corpus – some Rap songs of protesting – it was analyzed the students’ reflective critical reading in the workshops of Rap-song reading, applied in modules of our teaching sequences. Through the carried out analysis, it was noted that the subjects surveyed have come from an educational culture towards the fulfillment of a conteudista proposed curriculum, so that in this scenario we do not see, through reading, training of the individual citizen, able to through his readings, understanding the socio-ideological structure that surrounds them; and so, escaping of understandings the world, based only on common sense. We conclude also that our teaching proposal represented a novelty for students. Initially, some of them did not see this work as reading, however, the majority was heavily involved in the process; so that, in their comments, we realize voices of a critical and reflective look of which comprise environments, and social situation to which they belong.

Leitura do mundo no rap: uma análise bakhtiniana de práticas leitoras no ensino fundamental

This study aims to propose two didactic sequences on the rap songs to the process of formation of critical reflective reader, in the elementary school – in 6th and 9th grade classes. The theoretical foundations that have supported the work are related to the Bakhtin Circle propositions, especially the notions of language as a social ideological discourse; responsive reading; discursive genre and social voices. As for the methodological guidance, it is characterized by adopting the interpretativist paradigm of socio-historical base, in addition to positioning in the large field of Applied Linguistics, whose primary focus is specifically located language. In the selected enunciations to corpus – some Rap songs of protesting – it was analyzed the students’ reflective critical reading in the workshops of Rap-song reading, applied in modules of our teaching sequences. Through the carried out analysis, it was noted that the subjects surveyed have come from an educational culture towards the fulfillment of a conteudista proposed curriculum, so that in this scenario we do not see, through reading, training of the individual citizen, able to through his readings, understanding the socio-ideological structure that surrounds them; and so, escaping of understandings the world, based only on common sense. We conclude also that our teaching proposal represented a novelty for students. Initially, some of them did not see this work as reading, however, the majority was heavily involved in the process; so that, in their comments, we realize voices of a critical and reflective look of which comprise environments, and social situation to which they belong.

Aprendizagem criativa na aula de piano em grupo

The central focus of this thesis was to investigate creative learning in music at piano group lessons. Thus, the theoretical framework adopted was guided by two main principles: (1) creativity in the field of music education and (2) Piano teaching and learning. As a methodological procedure we used a research-action with students of the disciplines Prática de Instrumento Harmônico I e II, at the Music Education Undergraduate Course of Federal University of Rio Grande do Norte (UFRN). This research-action was structured in four phases: 1) the identification of the starting points and the theme of creativity matters in piano group lessons, considering the context of a teacher training course in music; 2) the projection of actions, the definition of the objectives and the organization of instruments of data collection and analysis; 3) the realization of the planned actions; and 4) the evaluation of the results, the transcription, organization and analysis of the data collected through observation and interviews. Given the Creative Learning Cycle in Music, represented by the activities of composing, performing and criticizing Music, defended by Beineke (2009, 2013, 2015), we propose in this thesis a creative cycle of formation in music to promote creative learning in piano group lessons, in which teachers and students teach and learn creatively, expanding training opportunities in the field of Music Education. This was possible due to the joint experience of creative practices related to improvisation, elaboration of arrangements and musical compositions - elements that contributed positively to the learning process of the participants. But for this to occur, the planning, implementation and evaluation of the creative and pedagogical musical procedures adopted were decisive, considering the perspectives of students, their conceptions, musical creations, processes and collaborative exchange.

Aprendizagem criativa na aula de piano em grupo

The central focus of this thesis was to investigate creative learning in music at piano group lessons. Thus, the theoretical framework adopted was guided by two main principles: (1) creativity in the field of music education and (2) Piano teaching and learning. As a methodological procedure we used a research-action with students of the disciplines Prática de Instrumento Harmônico I e II, at the Music Education Undergraduate Course of Federal University of Rio Grande do Norte (UFRN). This research-action was structured in four phases: 1) the identification of the starting points and the theme of creativity matters in piano group lessons, considering the context of a teacher training course in music; 2) the projection of actions, the definition of the objectives and the organization of instruments of data collection and analysis; 3) the realization of the planned actions; and 4) the evaluation of the results, the transcription, organization and analysis of the data collected through observation and interviews. Given the Creative Learning Cycle in Music, represented by the activities of composing, performing and criticizing Music, defended by Beineke (2009, 2013, 2015), we propose in this thesis a creative cycle of formation in music to promote creative learning in piano group lessons, in which teachers and students teach and learn creatively, expanding training opportunities in the field of Music Education. This was possible due to the joint experience of creative practices related to improvisation, elaboration of arrangements and musical compositions - elements that contributed positively to the learning process of the participants. But for this to occur, the planning, implementation and evaluation of the creative and pedagogical musical procedures adopted were decisive, considering the perspectives of students, their conceptions, musical creations, processes and collaborative exchange.

Políticas públicas de turismo: análise do desempenho das instâncias de governança turística e seus reflexos no fomento do turismo cultural no município de Manaus/AM (2003-2014)

This study has the main objective to analyze the role of the bodies of state and local governance of tourism, aimed at tourism development process in the city of Manaus / AM , by the public practices of planning, management and development activity in the respective municipality . To the specific objectives were established four aims: 1) To characterize the process of formation of governance entities active in tourism in the city of Manaus. 2) Lift the actions planned and executed by the authorities aimed at cultural tourism in the period 2003-2014. 3) To question through the perception of the actors representing the different classes and entities of the Amazonian society, the actions planned and executed by the authorities aimed at cultural tourism in the period 2003-2014 and 4) Identify key similarities and the differences in decision-making about actions aimed at cultural tourism in Manaus. We adopted a qualitative approach, using the methodological design of descriptive and exploratory, with the help of the use of the techniques of literature search, document, with on-site data collection through interviews with semi-structured script application forms to the representatives of sectorial institutions that make up the locations of governance in tourism. In addition, the treatment of information was used content analysis technique. In response to stated objectives, it can be concluded that the creation of public arenas, through the tourism of governance has enabled incipient discussion in a democratic manner and decision-making in the area of planning and management of tourism in Manaus. It was also observed that obstacles that hinder and undermine the structures of the bodies, which reflect the joint, in the promotion and cultural tourism development in the city of Manaus.

Cenários de contra-hegemonia no protestantismo brasileiro no contexto da pós-modernidade

Since long ago that the religious manifestations are considered important items in various social media. In this sense, we are interested in understanding the strong denominational plurality, and the emergence of new movements / events and forms of Christianity in Brazil, which therefore is a reflection of what happens in the rest of the globalized world. Such interest is covered by the assumption that religiosity and social media are built on mutual and interconnected way, which allows us to understand that social cosmology presents itself as a fertile space privileged and to verify the interactions pertaining to the binomial: religion and society. The Protestantism is divided into three main streams: Historical, Pentecostal and Neo-Pentecostal. Each current of Protestantism emerged to adapt to social cosmology of historical ages, from the Reformation to the present day, forming institutions with certain ethical and moral stances. In this sense, it is necessary to research and understand how the historical Protestant, Pentecostal and neo-Pentecostal were implanted in Brazil. From this we believe to be interesting problematize accurately the following: How have the processes of formation of strands / evangelical movements in Brazil? These movements are still holding their "classic robes" or hybreeding their borders? What are the modulations in the religious transit demonstrate that this probable hybridization? If there is, indeed, a hybridization between the Evangelical means, we can put it is provoked only by a logic of "market of symbolic goods of religion" in the world today? Nowadays, we are experiencing a period of change cosmological, from Modern to Postmodern (caosmológic). This last is therefore characterized by secularization, the fracture, the mutilation, the diversity of subjectivities. And thinking about is this "spirit of the times" we take as the main its theoretical references of this study, the Italian philosopher and thinker of postmodernity Gianni Vattimo featuring postmodernity with the cosmology of fragile / pensiero debole Thought and post-metaphysical, that is which enhances the appearance of more plural institutions and non-absolute. To do so, he makes use of the philosophies of German, Nietzsche and Heidegger. Finally, it must be said that this grounded theoretical framework, raise the hypothesis that the Protestantism tends to "injure anymore" by the influence of postmodern social episteme, providing thereby the emergence of a new hybrid framework has not yet nominated and can move between the three major currents of world Protestantism, with features in converged aspects of the same.