Remoção biológica de nitrato em água de abastecimento humano utilizando o endocarpo de coco como fonte de carbono

The groundwater quality has been compromised as a result of the intensification of human activities over the years. Groundwater contamination by nitrate is one of the effects of this degradation, a socio-environmental problem that affects many regions of the world and particular the city of Natal (RN). Developing techniques for nitrate removal in water is intended to eliminate or reduce the concentration of this compound, and those that involve biological processes have produced economic and environmental advantages. This study proposes a technology for biological removal of nitrate in water supply for humans, using the endocarp s coconut as a carbon source and bacteria support. The experiments were performed in pilot scale anoxic, testing different areas of the substrate surface. Results showed high rates nitrate removal during the monitoring period, noting the occurrence of denitrification after the beginning of system operation. The best performance was achieved in the treatment system containing substrate surface area increased, indicating that the decrease in the endocarp size contributed to increased bacterial activity, improving the ability to remove nitrate. About the quality analyzed aspects of water, it was found that the proposed technology has the potential water use for human consumption

A Dança na Escola: um sério problema a ser resolvido

Pretendemos abordar os aspectos relacionados à Dança na Escola e pensarmos sobre uma formação continuada, a fim de discutir e refletir a elaboração de propostas de capacitação em Dança voltadas aos professores de Educação Física, principalmente no interior do Estado de São Paulo. Analisaremos a formação inicial dos professores, objetivos, conteúdos e possibilidades de aplicação da Dança no contexto educacional. Apesar do aumento das pesquisas em relação ao ensino da Dança na Escola, falta um espaço adequado e professores comprometidos com um trabalho sério, consciente e crítico, pois a hegemonia do esporte se encontra muito arraigada na cultura escolar. Uma forma de amenizar esse problema seriam cursos de capacitação, de forma permanente, voltados aos conteúdos de Dança, a fim de que esses professores possam ter vivências em práticas dançantes embasadas em uma fundamentação teórica para, assim, discutir, analisar e refletir a melhor maneira de trabalhar esta arte no âmbito escolar.

Limites do ensino de dança na formação do professor de Educação Física

The dance is one of the cultural content of body movement. But it is known, by means of literature and researches, that the training of teachers of Physical Education has submitted this content limits, damaging their future education in schools. This article discusses these limits and their possible solutions, ruled itself for both in literature and analysis on data collected in search of the Masters PEREIRA (2007). In this analysis it was felt that the dance is little in this Fitness because of graduate students have little experience inside and outside the school environment, because many parents, teachers and students have to dance with prejudice, and because do not feel prepared to deal with this content in schools. It appears that this may be due to the hegemony of sports in physical education, and some misunderstandings when you think the goals and content of dance in physical education.

Contato corporal entre adolescentes através da dança de salão na escola

The objective of this study was to identify the reaction and perception of adolescents in relation to body contact as well as emotional expressions through ballroom dancing. Forty-two adolescents from a public elementary school in the state of São Paulo participated in the study. Data gathering was conducted in groups by filming the ballroom dance class and applying a questionnaire about the experience. The dance experience was observed to provide greater body proximity and demonstration of affection, since part of the participants reported well-being, while others reported being embarrassed by dancing with a partner from the opposite sex. It was concluded that more dance activities related to biopsychosocial development need to be offered at school since ballroom dancing can help in interaction promoting body contact and thus facilitate in the process of interpersonal relations between adolescents.

Encontros entre dança, subjetivação e saúde mental

Taking from starting point the contact with the experience of a dancing body language group at Centro de Atenção Psicossocial (CAPS) II in Fortaleza-CE, aiming to investigate the relationship between what we denominate dancing-dispositive and the process of de-institutionalization of insanity. Based in the philosophy of difference and in the cartographic perspective, we used the concept of dispositive in order to make visible the lines that compose it and the way they tangle in the production of different ways of subjectivation through another form of expression using the body. We followed two fortnight groups of body language recording the conversations that took place in the beginning and in the end of the activities. We also recorded our informal talks with the workshopper, with the psychiatrist responsible for the course of formation of artists of CAPS and the choreographer who was part of the artistic formation of the workshopper aiming to elucidate the body, dance and art conceptions which guided such work. Finally, we interviewed some technicians and we participated of a meeting of the team aiming to understand how that activity was perceived. We observed that the use of certain conception of dance in the field of mental health is in consonance with the the Phychiatric Reform, since it provides another way of dealing with the body, different from that produced by the contention and by the discipline. Nevertheless, we understood that there is a risk that, in some moments, the group being more a place of normalization than one of experimenting other ways of relating with yourself and with the others. We also noted that the dancing-dispositive appears as an important analyzer of the connections established at CAPS, indicating a need of the service to be more opened to the production of new care and harboring strategies, breaking the mental health facility logic of incarceration of life which still persists in the quotidian of that institution

Reavaliação da eficiência de óleo de coco saponificado e de sua microemulsão como inibidores de corrosão em uma célula eletroquímica

An interesting development in surfactants science and technology is their application as corrosion inhibitors, since they act as protective films over anodic and cathodic surfaces. This work aims to investigate the efficiency of saponified coconut oil (SCO) as corrosion inhibitor and of microemulsified system (SCO + butanol + kerosene oil + distilled water), in saline medium, using an adapted instrumented cell, via techniques involving linear polarization resistance (LPR) and mass loss coupons (MLC). For this, curves of efficiency versus SCO concentration (ranging between 0 and 75 ppm) have been constructed. According to the obtained results, the following efficiency levels were reached with OCS: 98% at a 75 ppm concentration via the LPR method and 95% at 75 ppm via the MLC method. The microemulsified system, for a concentration of 15 ppm of SCO, obtained maximum inhibition of 97% (LPR) and 93% (MLC). These data indicate that it is possible to optimize the use of SCO in similar applications. Previous works have demonstrated that maximal efficiencies below 90% are attained, typically 65% as free molecules and 77% in microemulsified medium, via the LPR method in a different type of cell. Therefore, it can be concluded that the adapted instrumented cell (in those used methods) showed to be an important tool in this kind of study and the SCO was shown effective in the inhibition of the metal

Estudo da corrosão no aço carbono 1020 protegido com óleo de coco saponificado: análise físico-química do comportamento químico do tensoativo

Corrosion inhibitors in solution are utilized to minimize processes from corrosion in steel. Of the present dissertation was evaluated the efficiency by inhibition from the surfactant saponified coconut oil (OCS) in the carbon steel 1020 through in linear polarization electrochemistry technique, well as, studied the process from adsorption through from the isotherms from Langmuir, Frumkin and Temkin. The corrosion current was determined through in Tafel extrapolation from the curves in the polarization, and then, was calculated the efficiency in the inhibitor to each concentration and temperature. Were studied four concentrations (12,5 ppm, 25 ppm, 50 ppm, and 75 ppm) in the inhibitor OCS and one in the NaCl salt (10.000 ppm) in six temperatures (301 K, 308 K, 313 K, 318 K, 323 K, and 328 K) in triplicate. By the results obtained observed that the technique applied can evaluated with rapidity and efficiency corrosion inhibitors. In relation to the isotherms, the than best appropriated was the in Langmuir and in the concentrations studied, the that obtained the best efficiency was the concentration of 75 ppm

Compreendendo a dança do Torém: visões de folclore, ritual e tradição entre os Tremembé do Ceará

Este artigo pretende discutir as mudanças históricas e culturais que têm afetado o torém, a dança específica mantida pelos Tremembé do estado do Ceará. Ainda que o torém tenha sido referido em registros históricos desde o século dezenove, ele tem sido objeto de apreciações e percepções diversas por muitos grupos sociais. Índios, pesquisadores, missionários e agentes do Estado têm tido diferentes posições, às vezes contraditórias, sobre a dança. Um de meus principais objetivos é entender como o torém tem sido progressivamente objetificado por idéias de folclore, etnicidade e política a partir dos contextos históricos específicos nos quais eles devem ser situados. Preocupações antropológicas sobre a experiência da etnicidade são relacionadas a elementos particulares da dança, especialmente os significados do vestuário, da música e da performance.

Experiências do movimento e a formação do professor de dança

O presente projeto tem como objeto de investigação as experiências do movimento como referências para a formação do professor de dança. Compreende-se a experiência a partir da fenomenologia de Merleau-Ponty, como modo de ser no mundo e delimitam-se para a investigação as experiências relacionadas à cultura de movimento, em geral, e a dança, em particular. Interessa questionar como o movimento mobiliza o sujeito e interfere em sua formação como professor de dança. Do ponto de vista metodológico a pesquisa orienta-se pela Fenomenologia, com enfoque na produção de narrativas escritas do próprio pesquisador e outros professores artistas da cidade de Natal-RN-Brasil. Nesse sentido, espera-se que a investigação seja capaz de apontar perspectivas para a formação do professor de dança que parta primeiramente de sua própria experiência como ser dançante, dinâmica essa necessária à vinculação do professor a área de conhecimento que exerce a docência

Estudos sobre dançatividade: dança – corpo – performance

A partir de trabalhos que questionam limites de linguagens artísticas, discute-se o termo dançatividade enquanto potência do corpo-artista. A escolha dos trabalhos se orientou pela percepção de tal potência como impulso para a desterritorialização dos campos específicos da dança para se re-territorializar em outro campo de fronteira pela própria experiência do corpo

Estudo do comportamento mecânico de estruturas de solo-cimento reforçado com fibras de coco e hastes de bambu

In this work the use of coconut fiber (coir) and bamboo shafts as reinforcement of soil-cement was studied, in order to obtain an alternative material to make stakes for fences in rural properties. The main objective was to study the effect of the addition of reinforcement to the soil-cement matrix. The effect of humidity on the mechanical properties was also analyzed. The soil-cement mortar was composed by a mixture, in equal parts, of soil and river sand, 14% in weight of cement and 10 % in weight of water. As reinforcement, different combinations of (a) coconut fiber with 15 mm mean length (0,3 %, 0,6 % and 1,2 % in weight) and (b) bamboo shafts, also in crescent quantities (2, 4 and 8 shafts per specimen) were used. For each combination 6 specimens were made and these were submitted to three point flexural test after 28 days of cure. In order to evaluate the effect of humidity, 1 specimen from each of the coconut fiber reinforced combination was immersed in water 24 hours prior to flexural test. The results of the tests carried out indicated that the addition of the reinforcement affected negatively the mechanical resistance and, on the other hand, increased the tenacity and the ductility of the material.

Cenas urbanas e cenas da dança: compondo novos repertórios pedagógicos no contexto do ensino superior

O texto tem como objetivo descrever e refletir sobre uma situação vivida no âmbito do ensino superior, mais especificamente na disciplina dança educacional da licenciatura em educação física da Universidade Federal do Rio Grande do Norte (UFRN), com enfoque nos processos de ensino-aprendizagem da dança vivenciados a partir de uma experiência de composição coreográfica. Partindo de uma atitude fenomenológica, o texto descreve as experiências vividas na situação pedagógica do ensino da dança no âmbito da licenciatura como vivências significativas para refletir sobre as relações entre o conhecimento sobre a dança e o conhecimento pedagógico necessário ao seu ensino

Entre corpos reais e virtuais: reflexões da dança contemporânea para pensar o corpo na educação física

Esta pesquisa objetiva identifi car as novas confi gurações de corpo advindas da interconexão entre Dança e Tecnologia, bem como compreender de que maneiras essas confi - gurações se aproximam e contribuem para a compreensão de corpo na Educação Física. O recurso metodológico é a análise de imagens dos vídeos de dança: Digital Brazuca e Corpo Aberto. Os vídeos analisados apontam para um repertório de saberes, que podem ser problematizados na área, e contribuem para reconfi gurar a relação homem/ambiente. Nesse sentido, promovem a plasticidade e a polissemia de relações entre o carbono e o silício, e desenham outras formas de compressão do corpo que incluem a complexidade, a incerteza, a reversibilidade e a descoberta

A experiência do corpo na dança butô: indicadores para pensar a educação

Neste artigo pretende-se refletir, apoiado em alguns ensaios de Merleau-Ponty e com base na fenomenologia, acerca do corpo e das narrativas e saberes que nele se anunciam na dança butô — modalidade que combina dança e teatro, criada no Japão na década de 1950. De modo geral, o corpo foi compreendido como elemento acessório no processo educativo, e essa compreensão ainda é predominante no contexto atual. Nossa reflexão tenta apontar outros caminhos de entendimento do corpo na educação, a partir de uma atitude que busca superar o instrumentalismo e ampliar as referências educativas, ao considerar a fenomenologia do corpo, e sua relação com o conhecimento sensível, como aquela capaz de amplificar a textura corpórea dos processos de conhecimento. Considerando a experiência do corpo na dança butô, apresentamos indicadores para pensar a educação, relacionados à experiência estética. Dentre eles destacamos: a plasticidade do corpo, a sua produção incessante de ressignificações, a sua abertura à inovação, a sua condição mutante, a sua ruptura com a mecanização gestual, a sua não dissociação entre homem e mundo, pensamento e sentimento. Todos esses aspectos que reúnem o saber recursivo, integrativo e criativo do corpo, são indicadores para pensarmos na educação, por tratar-se de uma nova possibilidade de leitura do real, a partir da linguagem do gesto, em que dialogam saberes e práticas inscritos na experiência corporal

Searching for larval support for majoid families (Crustacea : Brachyura) with particular reference to Inachoididae Dana, 1851

We re-evaluated the larval support for families within majoids using the Wilcoxon signed-rank test with emphasis on Inachoididae. To accomplish our objectives, we added 10 new taxa, two of which are traditionally assigned to the family of special interest, to a previous larval database for majoids, and re-appraised the larval characters used in earlier studies. Phylogenetic analysis was performed with PAUP* using the heuristic search with 50 replicates or the branch-and-bound algorithm when possible. Multi-state transformation series were considered unordered; initially characters were equally weighted followed by successive weighting, and trees were rooted at the Oregoniidae node. Ten different topological constraints were enforced for families to evaluate tree length under the assumption of monophyly for each taxonomic entity. Our results showed that the tree length of most constrained topologies was not considerably greater than that of unconstrained analysis in which most families nested as paraphyletic taxa. This may indicate that the present larval database does not provide strong support for paraphyly of the taxa in question. For Inachoididae, although the Wilcoxon signed-rank test rejected a significant difference between unconstrained and constrained cladograms, we were unable to provide a single synapomorphy for this clade. Except for the conflicting position of Leurocyclus and Stenorhynchus, the two clades correspond to the traditional taxonomic arrangement. Among inachoidids, the clade (Anasimus (Paradasygyius (Collodes + Pyromaia))) is supported, whereas for inachids, the clade (Inachus (Macropodia + Achaeus)) is one of the most supported clades within majids. As often stated, only additional characters will provide a better test for the monophyly of Inachoididae and other families within Majoidea.