Síntese do Poli (ácido láctico) por policondensação direta utilizando um planejamento fatorial

The environmental impact caused by the disposal of non-biodegradable polymer packaging on the environment, as well as the high price and scarcity of oil, caused increase of searches in the area of biodegradable polymers from renewable resources were developed. The poly (lactic acid) (PLA) is a promising polymer in the market, with a large availability of raw material for the production of its monomer, as well as good processability. The aimed of this study was synthesis PLA by direct polycondesation of lactic acid, using the tool of experimental design (DOE) (central composite rotatable design (CCRD)) to optimize the conditions of synthesis. The polymer obtained was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), viscosimetric analysis, differential scanning calorimeter (DSC) and size exclusion chromatography (SEC). The results confirmed the formation of a poly (lactic acid) semicrystalline in the syntheses performed. Through the central composite rotatable design was possible to optimize the crystallization temperature (Tc) and crystallinity degree (Xc). The crystallization temperature maximum was found for percentage of catalyst around the central point (0,3 (%W)) and values of time ranging from the central point (6h) to the upper level (+1) (8h). The crystallization temperature maximum was found for the total synthesis time of 4h (-1) and percentage of catalyst 0,1(W%) (-1). The results of size exclusion chromatography (SEC) showed higher molecular weights to 0,3 (W%) percent of catalyst and total time synthesis of 3,2h

Aplicação da metodologia de planejamento de experimentos para formulação de massas cerâmicas para telhas

Rio Grande do Norte State stands out as one great producer of structural clay of the brazilian northeastern. The Valley Assu ceramic tiles production stands out obtained from ilitics ball clays that abound in the region under study. Ceramics formulation and the design of experiments with mixture approach, has been applied for researchers, come as an important aid to decrease the number of experiments necessary to the optimization. In this context, the objective of this work is to evaluate the effects of the formulation, temperature and heating rate in the physical-mechanical properties of the red ceramic body used for roofing tile fabrication of the Valley Assu, using design of mixture experiments. Four clays samples used in two ceramics industry of the region were use as raw material and characterized by X-ray diffraction, chemical composition, differential thermal analysis (DTA), thermogravimetric analysis (TGA), particle size distribution analysis and plasticity techniques. Afterwards, they were defined initial molded bodies and made specimens were then prepared by uniaxial pressing at 25 MPa before firing at 850, 950 and 1050 ºC in a laboratory furnace, with heating rate in the proportions of 5, 10 e 15 ºC/min. The following tecnologicals properties were evaluated: linear firing shrinkage, water absorption and flexural strength. Results show that the temperature 1050 ºC and heating rate of 5 ºC/min was the best condition, therefore presented significance in all physical-mechanical properties. The model was accepted as valid based of the production of three new formulations with fractions mass diferents of the initial molded bodies and heated with temperature at 1050 ºC and heating rate of 5 ºC/min. Considering the formulation, temperature and heating rate as variables of the equations, another model was suggested, where from the aplication of design of experiments with mixtures was possible to get a best formulation, whose experimental error is the minor in relation to the too much formulations

Desenvolvimento de microemulsões liofilizadas como um potencial sistema de liberação de fármacos usando planejamento experimental fatorial

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Planejamento em saúde no Brasil: convergências e divergências entre instâncias de gestão

Trata-se de uma investigação que busca revelar convergências e divergências no processo de planificação da Política Pública de Saúde, com foco primordial na participação dos organismos de representação social na consolidação do Sistema Único (SUS), destacando a Conferência Nacional de Saúde CNS, instância que deve ter participação obrigatória na formulação de recomendações para essa política estatal. Considera que a planificação reúne elementos de concepção jurídica, técnica e política para a elaboração dos documentos intitulados Planos Nacionais de Saúde PNS. A partir de pesquisa qualitativa de base documental e argumentação com apoio de Cartografia Simbólica, põe em exame o processo de elaboração e o teor presente nos relatórios da 12ª (2003), 13ª (2007) e 14ª CNS (2011), alinhando seus eixos, diretrizes e prioridades nos correspondentes PNS nos quadriênios 2004-2007, 2008-2011 e 2012-2015. A escolha desses instrumentos, na temporalidade sugerida, tem por esteio o período em que a implantação do sistema de Planejamento do SUS PlanejaSUS, orienta normativa e tecnicamente a elaboração do PNS, tendo como uma de suas referências o que foi emanado das conferências. Propõe-se verificar as tensões existentes entre momentos distintos da definição das prioridades elencadas nas políticas públicas de saúde à luz das contribuições teóricas sobre a concepção do Estado, numa visão contemporânea associada à sua dinâmica de atuação vinculada ao modo de produção e acumulação capitalista; sobre a metodologia do Planejamento Estratégico com base na participação de atores diversos; e ainda, na análise sobre a expressão desse participacionismo na ótica dos processos democráticos representativos no SUS. Na confecção dos mapas cartográficos foi proposta a correlação entre os conteúdos dos Relatórios das 12ª a 14ª conferências de saúde com o que está expresso nas prioridades constantes nos Planos Nacionais de Saúde (2004 a 2007, 2008 a 2011 e 2012 a 2015), verificando-se aproximações e distanciamentos existentes entre o que expressa a sociedade e a política governamental. Conclui-se que, do exame crítico entre as diretrizes e prioridades contidas no acervo documental existente e sua metodologia de construção, com fundamento na argumentação do aporte teórico trabalhado, são verificadas tensões e harmonizações que revelam pontos convergentes e dissonantes das pactuações e consensos entre os atores sociais representantes dos segmentos, no qual critério da representatividade condiciona a defesa de opiniões, interesses e prioridades, de modo diverso para os que estão implicados nesse processo de planificação

O desenvolvimento sustentável na ordem constitucional e sua promoção através do planejamento urbano

The man, being subject and object of their changes, has passed by many process to find a better life way. Since your existence, he finds to live in groups for make easy your life and make concrete yours desires. All by history, when the individual´s rights was establishment, collectives and lonely way, contribute for evaluate the relationship between individuals and they own, and them and state, which has a duty to those, positive or negative, depending on the case. The circle of fundamentals rights has been sustainable development and the concept of growth economy associated to the environment protection. This association reflect a apparent conflict between values very distinct, but the constitutional interpretation can be reunite both of them and make it live in harmony; values of environmental order and economical order can be exist together, as long as the state contribute to this. On the city, where the most of relationships happening, the urban plan appear how a effective way of sustainable development, finding the harmony between the growth economy and environment protection. To effective the socials functions of the city (inhabit, circulate, work and entertainment) and the citizen´s life quality, the city is the scenery that show how the urban plan, across established previously legal instruments, like the governmental public politics, to effective the right to development, right of third generation. The director plan how effective tool for local needs - obligation defined by Citizen Statute that contribute for the program linked defined by the urban plan. The state´s intervention on the private sector of citizen, and the restriction on their rights are be justified by the collective´s rights and their quality of life. So, in front the urban scenery has been the plan to make social functions of city, the healthy way of life, which is the sustainable development

O Papel do Estado na promoção do Desenvolvimento Nacional: a utilização do instrumento do planejamento na expansão da oferta energética

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

Planejamento tributário: Critérios e limites para a desconsideração dos atos e negócios jurídicos pela administração fiscal

Tax planning is a subject that has been increasing in relevance in Tax Law. This current dissertation s objective is to approach the criterion and limits for the disqualification of law acts and business through the Tax Administration. Law acts and business resulted from the conduct of contributors that seek to diminish the growing raise of the tax load, using some means to reduce their burden and increase the possibilities of success in an economical activity, without violating the law in the persecution of paying fewer burdens. On the other hand, the tax administration, through its organs, hoping the increase of burden collection to withstand some determined sectors of the State, with a clear purpose to stop the contributor organizing his activity and structuring it as efficiently as possible, came up with a preliminary draft which left Complementary Law 104, from 10.02.2001, enacted, that inserted the unique paragraph of the National Tax Code, article 116, authorizing the disregard, by the administrative fiscal authority, of Law acts and business practiced to dissimulate the occurrence of burden gain or the nature of obligated incorporating elements, observing the procedures to be established in common law . Our goal is to identify the criteria and limits to disregard law acts and business through the tax administration, pointing out some possible means of action by the tax administration that qualifies it to disregard the contributor s acts and business, just claiming that a saving in the tax costs was made by the contributor s act

A escola de ensino médio público noturno: uma conjuntura favorável ao protagonismo estudantil coletivo em contraposição ao protagonismo juvenil via empoderamento

Ce travail etude le protagonisme juvénile en école de enseignement sécondaire publique, avec emphase a l enseignement nocturne. Considere las médiations que determinent le paradigme du protagonisme juvénile defendu pour théoriciens pos modernes et documents de reforme de enseignement sécondaire brésilien. Montre que les explications sur le protagonisme juvénile font part d une conception de pouvoir juvenile, proposé pour organismes multilatérales avec la volonté de mobiliser les jeunes pauvres pour faire actions du combat a pauvreté dans les nations sur le point de développement, conjoncture auquel sont proposées théories et pratiques que viabilizent la subsistance des jeunes pauvres en situation de risque. Discute la question de pouvoir juvenile et indique que la proposition de le protagonisme juvénile via pouvoir ont une espace favorable dans le sphère du enseignement sécondaire, niveau de la plupart de jeunes. Montre que la défense de pouvoir juvenile occulte chances de actions étudiants collectifs que permetent une intervention sociopolitique au élève de enseignement sécondaire, qui ont selement une function de homologation. Propose une recherche de possibilités de incentifs a le protagonisme juvénile collectif ou protagonisme étudiant collectif, auquel le étudiant presente suggestions pour le planification et éxecution de activités didactique pédagogiques dans l`école publique de enseignement sécondaire. Defend que la gestion démocratique, avec emphase en procès participatif, c est la principal déterminacion pour le protagonisme étudiant collectif. Méthodiquement , considere las dimensions suivantes pour le protagonisme juvénile: a) configuration de protagonisme juvénile b) protagonisme juvénile dans perspective légal/institutionel ; c) enseignement sécondaire et protagonisme juvénile ; d) possibilité de construction de protagonisme étudiant collectif dans enseignement sécondaire nocturne en Rio Grande do Norte, état choisi pour recherche. Sistematize une technique de revision de litérature sur le thème et informations d une consultation de documents, au-delà de donné constants de Banc de donées de la recherche Le Enseignement Sécondaire Publique Nocturne :registre et analyse de expérience dans l état de Rio Grande do Norte. Conclusion : il faut contribuer pour débats sur la participation politique de les jeunes dans le enseignement sécondaire nocturne, en presentant possibilités reéles de protagonisme étudiant collectif ; opinions presentées pour élèves sont très importantes a une direction d un rôle académique fait pour institutions scolaires dans ce moment , parce que des étudiants sont correspondants a interlocuteurs privilégiés ; le élève peut et deut être consulté depuis le moment de élaboration jusqu a réalisation de activités scolaires ; bien que il y a des entraves et difficultés immanents au enseignement sécondaire publique nocturne, se forment noveaux espaces de démocratisation de idées

Desenvolvimento de um sistema de planejamento, gestão de serviços e controle de custos em obras de construção civil

The increasing competitiveness of the construction industry, set in an economic environment in which the offer is now greater than the demand , causes the prices of many products and services, are strongly influenced by the processes of production and the final consumer. Thus, to become more competitive in the market and construction companies are seeking new alternatives to reduce and control costs, production processes and tools that allow for close monitoring of the construction schedule, with the consequent compliance deadline with the client. Based on this scenario, the creation of control tools, service management and planning work emerges as an investment opportunity and an area that can promote great benefits to construction companies. The goal of this work is to present a system of planning, service management and costs control that through worksheets provide information relating to the production phase of the work, allowing the visualization of possible irregularities in the planning and cost of the enterprise, enabling the company to take steps to achieve the goals of the enterprise in question, and correct them when necessary. The developed system has been used in a piece of real estate in Rio Grande do Norte, and the results showed that its use together allowed the construction company to accompany their results and take corrective and preventive actions during the production process, efficiently and effective

Fatores da satisfação do cidadão com a gestão pública: um estudo sobre o orçamento participativo municipal

This thesis deals with the quality dimensions and factors affecting citizens satisfaction in the participatory budgeting process in a major city of Brazil. Participatory budgeting was introduced as a usual practice in many Brazilian cities since the 1990s. It is adapted a model proposed by Johnson et al. (2001) of customer satisfaction and loyalty antecedent factors with constructs related to governance also included, to evaluate the quality perception and satisfaction rates by citizens representatives in the participatory budgeting process. It is conducted a survey with a sample of 84 citizens representatives of the seven city regions of Natal, the capital of a Northeastern State of Brazil. It is applied descriptive and multiple regression statistical analysis. The main findings related to quality and governance constructs are that the quality factors are the main factors affecting satisfaction but also the tax construct is significative to satisfaction. More regarding it was found that for different perspective of the satisfaction there are different set of factors affecting it

Produção pesqueira artesanal: diagnóstico ergonômico e bases para um planejamento nutricional situado e a promoção da saúde dos jangadeiros

The traditional fishing with rafts is characterized by unpredictability, high stakes and inadequate work conditions. The extensive working hours, physical wear, inadequate nutrition, unsanitary conditions, lack of salvage equipment and instruments suitable working, added by the presence of changes in the nutritional status of fisherman, that contribute to the picture of insecurity in high seas, injuries and health. This study aimed to analyze the activity of the fisherman s from Ponta Negra, Natal / RN, and check the conditions of supply of these fishermen and their implications on health and development of their work. To this finality, was used a methodology based on the ergonomic work analysis employing techniques such as observational and interactional conversational action, listening to the answers, observation protocols, photographic and video records. The script conversational dynamic action was developed from literature searches about the artisanal fisheries, culture and food habits of this population, and analyzes the overall situation of focus and two reference situations. To collect data on the usual diet of fisherman as well as quantitative and qualitative analysis that was used for data analysis and 24h recall the Food Frequency Questionnaire (FFQ). The impact of this power to the health of fisherman was evaluated performing a nutritional assessment. The results revealed that the fishermen carry out their activities with poor working conditions, health and nutrition. Feeding practices of these fishermen undertake development work, making it even more stressful, as well contributing to the emergence of Chronic Noncommunicable Diseases. The management of the activity, as well as the current structure of the vessel, also contributes to the adoption of inappropriate feeding practices during the shipment of catch. The results of this indicate the need for adequate interventions in order to assist in recovery and / or maintenance of health of fisherman minimizing reflections of nutritional disorders for the development activity by improving the quality of life in this population

A eficácia na execução do planejamento estratégico no poder judiciário do Rio Grande do Norte

This paper presents an analysis of the current strategic plan of the Judiciary of Rio Grande do Norte emphasizing the evaluation of strategic indicators verifying the effectiveness in implementation, since the implementation of the Balanced Scorecard as a tool for performance evaluation of strategic management. The research presents the strategy map and the evaluation indices of strategic performance reporting on the effectiveness. After literature review and documentary, is making the measurement of indicators that are treated from the standpoint of an exploratory and descriptive in strategic planning used by the judiciary Potiguar. The problem was evaluated qualitatively and quantitatively using statistical techniques for data analysis comparing them between Judiciaries of Brazilian States. With respect to data collection was used performance indicators extracted from the data of Justice in Numbers provided by CNJ the period from 2004 to 2011, and the information sought in the Sector Strategic Planning TJ / RN. The main results of this study are as follows: Acquisition of insight into what level is the strategic planning of the judiciary of Rio Grande do Norte and the evolution of its performance indicators comparing them with the states of RS, CE, SE and the National Judiciary

Uso de técnicas de otimização baseadas em derivadas como suporte do planejamento operacional de redes de distribuição de energia elétrica

The usual programs for load flow calculation were in general developped aiming the simulation of electric energy transmission, subtransmission and distribution systems. However, the mathematical methods and algorithms used by the formulations were based, in majority, just on the characteristics of the transmittion systems, which were the main concern focus of engineers and researchers. Though, the physical characteristics of these systems are quite different from the distribution ones. In the transmission systems, the voltage levels are high and the lines are generally very long. These aspects contribute the capacitive and inductive effects that appear in the system to have a considerable influence in the values of the interest quantities, reason why they should be taken into consideration. Still in the transmission systems, the loads have a macro nature, as for example, cities, neiborhoods, or big industries. These loads are, generally, practically balanced, what reduces the necessity of utilization of three-phase methodology for the load flow calculation. Distribution systems, on the other hand, present different characteristics: the voltage levels are small in comparison to the transmission ones. This almost annul the capacitive effects of the lines. The loads are, in this case, transformers, in whose secondaries are connected small consumers, in a sort of times, mono-phase ones, so that the probability of finding an unbalanced circuit is high. This way, the utilization of three-phase methodologies assumes an important dimension. Besides, equipments like voltage regulators, that use simultaneously the concepts of phase and line voltage in their functioning, need a three-phase methodology, in order to allow the simulation of their real behavior. For the exposed reasons, initially was developped, in the scope of this work, a method for three-phase load flow calculation in order to simulate the steady-state behaviour of distribution systems. Aiming to achieve this goal, the Power Summation Algorithm was used, as a base for developing the three phase method. This algorithm was already widely tested and approved by researchers and engineers in the simulation of radial electric energy distribution systems, mainly for single-phase representation. By our formulation, lines are modeled in three-phase circuits, considering the magnetic coupling between the phases; but the earth effect is considered through the Carson reduction. It s important to point out that, in spite of the loads being normally connected to the transformer s secondaries, was considered the hypothesis of existence of star or delta loads connected to the primary circuit. To perform the simulation of voltage regulators, a new model was utilized, allowing the simulation of various types of configurations, according to their real functioning. Finally, was considered the possibility of representation of switches with current measuring in various points of the feeder. The loads are adjusted during the iteractive process, in order to match the current in each switch, converging to the measured value specified by the input data. In a second stage of the work, sensibility parameters were derived taking as base the described load flow, with the objective of suporting further optimization processes. This parameters are found by calculating of the partial derivatives of a variable in respect to another, in general, voltages, losses and reactive powers. After describing the calculation of the sensibility parameters, the Gradient Method was presented, using these parameters to optimize an objective function, that will be defined for each type of study. The first one refers to the reduction of technical losses in a medium voltage feeder, through the installation of capacitor banks; the second one refers to the problem of correction of voltage profile, through the instalation of capacitor banks or voltage regulators. In case of the losses reduction will be considered, as objective function, the sum of the losses in all the parts of the system. To the correction of the voltage profile, the objective function will be the sum of the square voltage deviations in each node, in respect to the rated voltage. In the end of the work, results of application of the described methods in some feeders are presented, aiming to give insight about their performance and acuity

Mapa de Conteúdos e Mapa de Dependências:Ferramentas Pedagógicas para uma Metodologia de Planejamento baseada em Objetivos Educacionais e sua Implementação em um Ambiente Virtual de Aprendizagem

Furthered mainly by new technologies, the expansion of distance education has created a demand for tools and methodologies to enhance teaching techniques based on proven pedagogical theories. Such methodologies must also be applied in the so-called Virtual Learning Environments. The aim of this work is to present a planning methodology based on known pedagogical theories which contributes to the incorporation of assessment in the process of teaching and learning. With this in mind, the pertinent literature was reviewed in order to identify the key pedagogical concepts needed to the definition of this methodology and a descriptive approach was used to establish current relations between this conceptual framework and distance education. As a result of this procedure, the Contents Map and the Dependence Map were specified and implemented, two teaching tools that promote the planning of a course by taking into account assessment still in this early stage. Inserted on Moodle, the developed tools were tested in a course of distance learning for practical observation of the involved concepts. It could be verified that the methodology proposed by the above-mentioned tools is in fact helpful in course planning and in strengthening educational assessment, placing the student as central element in the process of teaching and learning

Uso de técnicas de otimização baseadas em derivadas como suporte do planejamento operacional de redes de distribuição de energia elétrica

The usual programs for load flow calculation were in general developped aiming the simulation of electric energy transmission, subtransmission and distribution systems. However, the mathematical methods and algorithms used by the formulations were based, in majority, just on the characteristics of the transmittion systems, which were the main concern focus of engineers and researchers. Though, the physical characteristics of these systems are quite different from the distribution ones. In the transmission systems, the voltage levels are high and the lines are generally very long. These aspects contribute the capacitive and inductive effects that appear in the system to have a considerable influence in the values of the interest quantities, reason why they should be taken into consideration. Still in the transmission systems, the loads have a macro nature, as for example, cities, neiborhoods, or big industries. These loads are, generally, practically balanced, what reduces the necessity of utilization of three-phase methodology for the load flow calculation. Distribution systems, on the other hand, present different characteristics: the voltage levels are small in comparison to the transmission ones. This almost annul the capacitive effects of the lines. The loads are, in this case, transformers, in whose secondaries are connected small consumers, in a sort of times, mono-phase ones, so that the probability of finding an unbalanced circuit is high. This way, the utilization of three-phase methodologies assumes an important dimension. Besides, equipments like voltage regulators, that use simultaneously the concepts of phase and line voltage in their functioning, need a three-phase methodology, in order to allow the simulation of their real behavior. For the exposed reasons, initially was developped, in the scope of this work, a method for three-phase load flow calculation in order to simulate the steady-state behaviour of distribution systems. Aiming to achieve this goal, the Power Summation Algorithm was used, as a base for developping the three phase method. This algorithm was already widely tested and approved by researchers and engineers in the simulation of radial electric energy distribution systems, mainly for single-phase representation. By our formulation, lines are modeled in three-phase circuits, considering the magnetic coupling between the phases; but the earth effect is considered through the Carson reduction. Its important to point out that, in spite of the loads being normally connected to the transformers secondaries, was considered the hypothesis of existence of star or delta loads connected to the primary circuit. To perform the simulation of voltage regulators, a new model was utilized, allowing the simulation of various types of configurations, according to their real functioning. Finally, was considered the possibility of representation of switches with current measuring in various points of the feeder. The loads are adjusted during the iteractive process, in order to match the current in each switch, converging to the measured value specified by the input data. In a second stage of the work, sensibility parameters were derived taking as base the described load flow, with the objective of suporting further optimization processes. This parameters are found by calculating of the partial derivatives of a variable in respect to another, in general, voltages, losses and reactive powers. After describing the calculation of the sensibility parameters, the Gradient Method was presented, using these parameters to optimize an objective function, that will be defined for each type of study. The first one refers to the reduction of technical losses in a medium voltage feeder, through the installation of capacitor banks; the second one refers to the problem of correction of voltage profile, through the instalation of capacitor banks or voltage regulators. In case of the losses reduction will be considered, as objective function, the sum of the losses in all the parts of the system. To the correction of the voltage profile, the objective function will be the sum of the square voltage deviations in each node, in respect to the rated voltage. In the end of the work, results of application of the described methods in some feeders are presented, aiming to give insight about their performance and acuity