Determinação de metais em água produzida de petróleo

In order to enable the reuse of the large surplus volume of petroleum produced water for irrigation of crops inedible, the quality evaluation of this water is very important. This work aimed to evaluate the effectiveness of the diffusive gradient in thin films technique (DGT) for the determination of labile Cu (II), Mn (II) and Zn (II) in petroleum produced water destined to reuse in agriculture. Samples were collected at the exit of the wastewater treatment plant (WWTP) (after separation oil/water and flotation) of a Petrobrás onshore production region. Basically, the laboratory experiments with DGT devices involved the evaluation of the behavior of the main variables of the technique for determination of analytes in the samples (diffusion coefficients, immersion time, fractionation of organic and inorganic species, and performance of diffusion gels with different porosities, among others). Also, experiments were conducted based on the solid phase extraction (SPE) protocol with Chelex- 100 resin using previously established protocols to support the study. During the project the possibility of in situ immersions in water treatment plants was evaluated. The DGT technique presented satisfactory results for determination of Mn in produced water, and can be used for in situ determinations. However, the results obtained for Cu and Zn show the need of additional studies

A cidade contemporânea à luz do cinema: o virtual e a transformação do espaço urbano

A compreensão da realidade imaginária do cinema e sua ligação com a arquitetura e urbanismo, vão além de representações cenográficas meramente ilustrativas. Mais do que perceber a distinção entre real e imaginário, é necessário entender a relação entre essas duas dimensões, tanto do ponto de vista histórico, como daquele propositivo, do pensar e refletir sobre projeto da cidade contemporânea. Arrisca-se em pensar em uma unidade complexa complementar se tomarmos as tangências históricas e estéticas que permeiam essa relação. Através da análise do espaço apresentado pela indústria cinematográfica a partir dos anos ’80, é possível delinear algumas hipóteses de como se pode indagar sobre o projeto da cidade contemporânea, diante das grandes transformações porque passaram o espaço urbano, a identidade dos lugares, da memória, enfim da cidade através de imagens, tecnologia e dinâmicas de rede e geografias descontínuas. Essa condição pode ser notada, mais especificamente, a partir de três filmes, utilizados neste trabalho como suporte de reflexão: do caos e sobreposição de extratos de alta densidade de peter greenaway, típicos da cidade como palimpsesto da cidade contemporânea, do vazio perturbador de lars von trier na morte do espaço público anunciado por richard sennet, ao o espaço labiríntico de christopher nolan a partir das geografias descontinuas das cidades em redes. A imagem como fator inevitável na sociedade contemporânea enlaça, cada vez mais profundamente, a relação entre arquitetura e cinema juntamente com as técnicas construtivas, a tecnologia e as relações humanas que transformam a forma de habitar as grandes metrópoles

Sensores de amônia à base de polianilina preparados com impressora jato de tinta

Neste trabalho, apresenta-se o desenvolvimento de um sensor de gás amônia sobre substrato de papel, impresso por jato de tinta térmico. Para a realização do trabalho formulou-se uma “tinta”4 de polianilina (PANI), adequada para uso na impressora térmica. Neste tipo de impressão, é necessário que a tinta de PANI seja preparada de forma que a maior parte do seu volume seja de água. A PANI, em seu estado desdopado, foi dissolvida em n-metil-2-pirrrilidona (NMP), e com a adição de água em determinadas condições de preparo e proporção, foi possível formar uma tinta de PANI/NMP/H2O estável e adequada para o uso na impressora térmica, podendo-se assim depositar filmes de PANI sobre substratos flexíveis, como por exemplo, diversos tipos de papéis. Neste trabalho, tintas de PANI foram depositadas sobre papel comum (sulfite) e papel fotográfico (glossy). A caracterização morfológica, por microscopia ótica, indicou que a qualidade dos filmes foi satisfatória em termos de uniformidade e homogeneidade. A resistividade de superfície dos filmes de PANI, sobre substratos de papel sulfite e fotográfico, é da ordem de 1x109 / , quando desdopado, e 1x104 / , quando dopado com vapor de ácido clorídrico (HCl). As caracterizações elétricas AC sugerem que os filmes de PANI desdopados, sobre ambos os substratos, se comportam similarmente a um circuito equivalente RC, formado por um resistor e um capacitor em paralelo. Entretanto, após a dopagem tal representação deixa de ser válida. Medidas elétricas...(Resumo completo, clicar acesso eletrônico abaixo)

Projeto D.A.N.T.E: desenvolvimento artístico de uma narrativa tecnológica

This monograph discuss the postmodernity social reality issues, emphasizing cultural, communicational, technological and informational extents. Via data collection through specific literature, and sources of different medias( internet, books, comic books, movies, novels, sociological, informational, technological, communicational and humanistic theories) behavioral patterns could be analyzed and the postmodern technological,informational and communicational reality as well, and how they mutually influence the “digital culture” construction (also called cyberculture). The results of this research were used to build a narrative which suits the new culture in development both in shape and in content: the scrip “Hotel Seol”. Therefore, “Hotel Seol” is consisted of an interactive and hypermedia narrative, in which the main reference sources are the study mentioned above, cyberpunk science fiction genre and “Hell”-first part of the book “Divine Comedy”, by DanteAlighieri

Efeitos fotocrômico e termocrômico em ormosils dopados com azobenzenos

The sol-gel process and the wide variety of alkoxides commercially available have facilitated the processing of various Organic-Inorganic Hybrid Materials. In general, the hybrids are excellents matrix to incorporate organic or inorganic dopants that presents photochromic, thermochromic, and halochromic effects and in some cases photorefractive effects. The GPTS-TEOS hybrid matrix when deposited in the form of film is very resistant, adherent, has excellent transparency in visible region and allows to be doped with various azo-dye and metal salts of unusual oxidation states. One of the main characteristics of the azo-dyes when immersed in some hybrid matrix , is the capacity to isomerizes through group Azo (-N = N-) would can be commutated between the Cis (Z) and Trans (E) configurations by means of light or heat. Our goal was through the sol-gel process to prepare hybrid films of GPTS-TEOS doped with azo-dyes Methyl Red and Disperse Red 1, and characterize them optically. The characterizations are performed using techniques of UV / Vis spectroscopy, to identify changes in the absorption band of azo-dyes in the presence of optical pumping, (photochromic effects), in function of temperature (thermochromic effect). These properties are of wide scientific and technological interest because they will contribute to the confection Smart Windows (windows sensible to light), temperature sensors monitored optically and also in the recording of amplitude and phase diffraction gratings

A discursivização em Wall.E: sociedade, tecnologia e poder

This article consists in a discourse analysis of the feature film in animation Wall.e produced by Pixar in association to Disney in 2008. Pixar has been known to produce films that contain various discursive levels, making its products appealing not only for children, but also for adults. However, Wall-e proves to be a masterpiece in Pixar carrier, because it is the one which focuses on the analysis and critique of contemporary society associated with technological development. For this, the plot has as its starting point the question of sustainability and unbridled consumerism. But the film expands the debate, tracing the relationship between technology and humanity, discussing how one affects the other. The project therefore aims to show how the animation works such concepts and constructs his discourse. To this end, the work seeks to identify the signs that make up the discourse and draw the intertextuality between WALL.E and other works that also discuss the same elements such as Stanley Kubrick‟s 2001 - A Space Odyssey (1968)

A pluralidade narrativa do cinema e a crítica negligente: estudo de caso : anticristo e melancolia, de Lars Von Trier

The cinematographic language is notedly plural and heterogeneous. There are many filmic elements that “narrate” all the time, in different ways. Besides enumerating some of them, this study seeks to analyse if the criticism is attentive to all of these tools or if it sticks only to some of them. It’s also reflects if this activity uses more objectives or subjectives aspects as basis for its conclusions. Here, a very specific field was chosen: the study is done by a comparative analysis of the reception of Brazilian’s and European’s criticism from two Lars Von Trier’s films, Antichrist and Melancholia. After explaining how the narrative elements are used in the cinema, it’s demonstrated that, in general, the criticism is negligent and does not analyze all of those tools. In some cases, the analysis of some elements is done in a superficial way, so others aspects can be highlighted

Reconhecimento de voz para aplicações em automação implementado em FPGA

In many movies of scientific fiction, machines were capable of speaking with humans. However mankind is still far away of getting those types of machines, like the famous character C3PO of Star Wars. During the last six decades the automatic speech recognition systems have been the target of many studies. Throughout these years many technics were developed to be used in applications of both software and hardware. There are many types of automatic speech recognition system, among which the one used in this work were the isolated word and independent of the speaker system, using Hidden Markov Models as the recognition system. The goals of this work is to project and synthesize the first two steps of the speech recognition system, the steps are: the speech signal acquisition and the pre-processing of the signal. Both steps were developed in a reprogrammable component named FPGA, using the VHDL hardware description language, owing to the high performance of this component and the flexibility of the language. In this work it is presented all the theory of digital signal processing, as Fast Fourier Transforms and digital filters and also all the theory of speech recognition using Hidden Markov Models and LPC processor. It is also presented all the results obtained for each one of the blocks synthesized e verified in hardware

Afetividade na infância e suas manifestações na escola

Este estudo teve por objetivo pesquisar a afetividade no universo escolar e mais especificamente na educação infantil. A proposta pretende focar nas manifestações infantis e nos modos de produção do vínculo da criança com o outro. Neste sentido é uma pesquisa de caráter bibliográfico tendo como foco estudos desenvolvidos na área. Tomo como ponto de partida desta reflexão, olhares para os filmes, “O garoto da bicicleta”, dos diretores Jean-Pierre e Luc- Dardenne, “ A central do Brasil”, do diretor Walter Salles e o filme “Ser e Ter”, de Nicolas Philbert. E como ponte de partida aborda a questão da afetividade em autores que discutem a infância no campo da psicologia do desenvolvimento como Henri Wallon

Controle de Qualidade em Raios X Odontológico Periapical

The purpose of this work is to provide quality control requirements and security in dental x-rays in order to obtain good quality image which allows the correct diagnosis, which reduces the dose to the patient, mainly due to the repetition of tests, and decreasing cost. The requirements apply to related activities to quality control and procedures using ionizing radiation for diagnostic imaging in dentistry by evaluating a minimum set of parameters to be tested or verified. Quality control follows the Ordinance No. 453 of the Ministry of Health of 06.01.1998, SS Resolution No. 625 of 12.14.1994 and Resolution No. 64 of the Health Surveillance Center – Department of Health of Sao Paulo and National Health Surveillance Agency – Ministry of Health of Brazil. This study was conducted in the city of Marilia, Sao Paulo, along with the Company P&R Consulting and Medical Physics, in a dental clinic of the University UNIMAR in the x-ray equipment used on that site. The physical parameters of the device were tested with the aid of ionization chambers to measure rates of radiation, electrometer to measure rates of time, kV and doses, radiographic films and positioning devices. Finally, this work demonstrates the need and importance of quality control, which one ensures the proper use of x-ray machines, maintaining efficiency and at the same time it reduces the risks to the patient, to the dentist and to the general public

Determinação de manganêsem águas no entorno de minerações de urânio

The studies of this work aimed to determine the labile fractions of manganese (Mn) in natural and drainage water samples collected around the Osamu Utsumi uranium mine, located in the municipality of Caldas, south-central region of Poços de Caldas- MG, using the technique of diffusion gradient in thin films (DGT). The DGT devices were mounted with Chelex-100 resin, polyacrylamide-agarose hydrogel (conventional porosity) and cellulose acetate membrane. The device were deployed up to 48 hours in six water samples collected from different areas around the uranium mine (075, 076, 022-E, 025-E, 014, and 041). The DGT devices immersed in each sample were gradually removed after 4, 8, 12, 24 and 48 hours. The pH of the samples ranged from 3.0 to 10.5, which influenced the lability and the sampling of the analyte by the Chelex-100 resin. The results showed a linear relationship between accumulated mass and sampling time (immersion curve) for samples 014 and 025-E (pH between 6 and 8) suggesting the ability of the DGT technique for sampling the analyte. The results obtained for samples 075 and 076 (pH<5) and samples 041 and 022-E (pH around 10) were characterized by nonlinear relationships. The values obtained by DGT were compared with Solid Phase Extraction (SPE) technique using Chelex-100. For samples 014 and 025-E, there was a good agreement between the results obtained by both techniques

Caipiras nas telas: a construção da identidade cultural campineira através dos jornais Gazeta de Campinas e Diário do Povo relatando o cinema local na década de 1920

O presente trabalho de conclusão de curso Jornalismo da Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) baseia-se na análise de conteúdo das notícias, notas e críticas publicadas nos periódicos Gazeta de Campinas e Diário do Povo sobre as atividades e exibições dos cinco filmes realizados na cidade de Campinas na década de 1920 – João da Matta (1923), Soffrer Para Gozar (1923), Alma Gentil (1924), A Carne (1925) e Mocidade Louca (1927) – para a verificação do processo de construção da identidade cultural local. Para objetivar a análise do corpus será realizada uma contextualização histórica da cidade de Campinas, do cinema brasileiro, da imprensa e de outros fatores que irão corroborar para uma compreensão ampla da proposta a que essa monografia se propõe

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Estudos de foto termo e biodegradação de blendas de PEBD/PHB em colunas de solo

A grande quantidade de resíduos plásticos sintéticos descartada diariamente no meio ambiente tem preocupado governantes do mundo todo. No sentido de minimizar este problema várias soluções estão sendo propostas. Uma delas é a busca de materiais potencialmente biodegradáveis no solo. Neste trabalho desenvolveu-se blendas de poli(3-hidroxibutirato) PHB, um polímero biodegradável, com polietileno de baixa densidade PEBD, um polímero convencional e avaliou-se os efeitos do termotratamento em estufa e do fototratamento em câmara de envelhecimento acelerado sobre a biodegradação destes filmes em coluna de solo. As blendas de PEBD/PHB foram preparadas em composições de 90/10, 80/20 e 70/30, utilizando prensa sob aquecimento e os filmes foram analisados por Espectroscopia de Absorção no Infravermelho (FTIR), Microscopia de Luz Polarizada (MLP), perda de massa e ângulo de contato.

A violência escolar retratada pelas lentes do cinema

This work of completion is inserted at the interface between violence and school, and how you want to portray violence in school is represented in film productions. We consider important to first discuss in depth the concepts of violence to better understand the phenomenon of school violence, which is a subject much discussed in recent times. One of the types of violence very often nowadays, taking forms that we can call as new, in primary education schools, as well as in society in general, is known as bullying, for some authors the concept is very close to the definition of prejudice in with respect to social factors that reflect the target groups of this type of violence. Other authors also research on the expansion of the recent phenomenon known as School Shooting, which means school shootings, very common in American schools. Our study builds on ideas Debarbieux and Blaya (2002) that treat violence more broadly, taking into account the reports of the victims, including symbolic violence, the institutional and physical. For them, every concept must take into consideration how it was socially constructed, to thereafter be searched. Our goal is to analyze and understand how the issue of school violence is treated theoretically and also as is portrayed through the lens of cinema. Our study is theoretically based on authors like Debarbieux, Blaya, Bourdieu, Charlot, Arendt, Foucault, Sposito, among others, and use the qualitative approach, working with content analysis of films