Proposta de válvula bypass para controle de velocidade de PIGs instrumentados: protótipo e simulação em bancada

In the Oil industry, oil and gas pipelines are commonly utilized to perform the transportation of production fluids to longer distances. The maintenance of the pipelines passes through the analysis of several tools, in which the most currently used are the pipelines inspection cells, popularly knowing as PIG. Among the variants existing in the market, the instrumented PIG has a significant relevance; acknowledging that through the numerous sensors existing in the equipment, it can detect faults or potential failure along the inspected line. Despite its versatility, the instrumented PIG suffers from speed variations, impairing the reading of sensors embedded in it. Considering that PIG moves depending on the speed of the production fluid, a way to control his speed is to control the flow of the fluid through the pressure control, reducing the flow rate of the produced flow, resulting in reduction of overall production the fluid in the ducts own or with the use of a restrictive element (valve) installed on it. The characteristic of the flow rate/pressure drop from restrictive elements of the orifice plate is deducted usually from the ideal energy equation (Bernoulli’s equation) and later, the losses are corrected normally through experimental tests. Thus, with the objective of controlling the fluids flow passing through the PIG, a valve shutter actuated by solenoid has been developed. This configuration allows an ease control and stabilization of the flow adjustment, with a consequent response in the pressure drops between upstream and downstream of the restriction. It was assembled a test bench for better definition of flow coefficients; composed by a duct with intern diameter of four inches, one set of shutters arranged in a plate and pressure gauges for checking the pressure drop in the test. The line was pressurized and based on the pressure drop it was possible to draw a curve able to characterize the flow coefficient of the control valve prototype and simulate in mockup the functioning, resulting in PIG speed reduction of approximately 68%.

Efeitos do Kinesio Taping® sobre os marcadores clínicos indiretos de dano muscular induzido pelo exercício excêntrico: ensaio clínico randomizado

Objective: analyze the effect of Kinesio Taping (KT) on the indirect clinical markers of muscle damage induced by eccentric exercises in the elbow flexors in healthy individuals. Materials and methods: It is a randomized controlled trial involving sixty volunteers at age group between 18 and 28 years randomly selected. The sample into three groups with twenty participants: control group (CG) – eccentric protocol without KT, KT group – eccentric with tensioned KT, placebo group – eccentric protocol KT with no tension. The evaluations took place at four moments; the first one was the basis line (AV1), after the second protocol (AV2) and the following two groups 24 (AV3) and 48 hours (AV4) after the intervention protocol. The muscle damage was induced by sixteen maximum eccentric contractions of the elbow flexors from the non-dominant limb, divided in two sets of eight repetitions, at 60º/s, with two minutes interval. The variables analyzed were: the joint amplitude in rest, the level of pain, the joint position sense (JPS) followed of isokinetic checking with electromyographic sign capitation. These data were analyzed in software SPSS 20.0. The normality was identified by Kolmogorov-Smimov examination and then, being used the ANOVA mixed model with significance of 5%. Outcomes: a decrease was observed at joint amplitude moreover, an immediate increase of pain wich increased after 24 and remained until 48 hours at all groups searched. There was not difference at the JPS. The variables peak torque, average peak torque, total work and mean power mean reduced until 48 hours after muscle lesion in all groups. Among the groups, there was no difference in EMG values and for any of the variables. Conclusion: The KT did not influence at the indirect clinical markers of muscle lesion induced by eccentric exercises in the elbow flexors in healthy people.

Efeitos do Kinesio Taping® sobre os marcadores clínicos indiretos de dano muscular induzido pelo exercício excêntrico: ensaio clínico randomizado

Objective: analyze the effect of Kinesio Taping (KT) on the indirect clinical markers of muscle damage induced by eccentric exercises in the elbow flexors in healthy individuals. Materials and methods: It is a randomized controlled trial involving sixty volunteers at age group between 18 and 28 years randomly selected. The sample into three groups with twenty participants: control group (CG) – eccentric protocol without KT, KT group – eccentric with tensioned KT, placebo group – eccentric protocol KT with no tension. The evaluations took place at four moments; the first one was the basis line (AV1), after the second protocol (AV2) and the following two groups 24 (AV3) and 48 hours (AV4) after the intervention protocol. The muscle damage was induced by sixteen maximum eccentric contractions of the elbow flexors from the non-dominant limb, divided in two sets of eight repetitions, at 60º/s, with two minutes interval. The variables analyzed were: the joint amplitude in rest, the level of pain, the joint position sense (JPS) followed of isokinetic checking with electromyographic sign capitation. These data were analyzed in software SPSS 20.0. The normality was identified by Kolmogorov-Smimov examination and then, being used the ANOVA mixed model with significance of 5%. Outcomes: a decrease was observed at joint amplitude moreover, an immediate increase of pain wich increased after 24 and remained until 48 hours at all groups searched. There was not difference at the JPS. The variables peak torque, average peak torque, total work and mean power mean reduced until 48 hours after muscle lesion in all groups. Among the groups, there was no difference in EMG values and for any of the variables. Conclusion: The KT did not influence at the indirect clinical markers of muscle lesion induced by eccentric exercises in the elbow flexors in healthy people.

A construção da identidade profissional de licenciados em Música da UFRN: um estudo de narrativas autobiográficas

Aims to understand the construction of the professional identity of undergraduate in Music UFRN, through the study of autobiographical sources of these subjects, checking their formative dimensions and their (re) meanings established throughout life stories. To do so, shows a brief presentation of the study and the main motivations of the author to do it; expresses the life story of the researcher and their training courses in music career; analyzes the historical overview of the route Search (Auto) biography as research and training approach (JOSSO, 2010; NÓVOA; FINGER, 2010; SOUZA, 2007; PASSEGGI; SILVA (2010b) and DELORY-MOMBERGER, 2012); It presents some reflections and discussions about the construction of identity, beyond the concepts and perceptions of the training and professional representations of this building (DUBAR, 2005); discusses the historical background regarding teacher training in Brazil and Music Education; describes the ways and methodological resources used for data collection and implementation of this research, namely, a reflective open questionnaire and autobiographical essays; It presents the life stories of the undergraduate students of the Music course and its educational and musical dimensions; Lastly, it presents a reflection about the paths taken. The results indicated that the autobiographical essays make it possible to understand the ways and social relations in the various identified training dimensions, in addition to realize that the family contexts and the first musical social contacts in informal settings, enable the licensees, an identification with the possible career lecturer in Music, as well as the main reasons for this choice. We conclude, therefore, that the experiences and musical experiences throughout life favor the construction of professional identity and that in the course of training, such experiences make ways to (re) define the musical experiences, as well as the (re) thinking their professional career.

A construção da identidade profissional de licenciados em Música da UFRN: um estudo de narrativas autobiográficas

Aims to understand the construction of the professional identity of undergraduate in Music UFRN, through the study of autobiographical sources of these subjects, checking their formative dimensions and their (re) meanings established throughout life stories. To do so, shows a brief presentation of the study and the main motivations of the author to do it; expresses the life story of the researcher and their training courses in music career; analyzes the historical overview of the route Search (Auto) biography as research and training approach (JOSSO, 2010; NÓVOA; FINGER, 2010; SOUZA, 2007; PASSEGGI; SILVA (2010b) and DELORY-MOMBERGER, 2012); It presents some reflections and discussions about the construction of identity, beyond the concepts and perceptions of the training and professional representations of this building (DUBAR, 2005); discusses the historical background regarding teacher training in Brazil and Music Education; describes the ways and methodological resources used for data collection and implementation of this research, namely, a reflective open questionnaire and autobiographical essays; It presents the life stories of the undergraduate students of the Music course and its educational and musical dimensions; Lastly, it presents a reflection about the paths taken. The results indicated that the autobiographical essays make it possible to understand the ways and social relations in the various identified training dimensions, in addition to realize that the family contexts and the first musical social contacts in informal settings, enable the licensees, an identification with the possible career lecturer in Music, as well as the main reasons for this choice. We conclude, therefore, that the experiences and musical experiences throughout life favor the construction of professional identity and that in the course of training, such experiences make ways to (re) define the musical experiences, as well as the (re) thinking their professional career.

Estudo da influência de sistemas microemulsionados na molhabilidade de arenitos e na recuperação avançada de petróleo

Sandstone-type reservoir rocks are commonly responsible for oil accumulation. The wettability is an important parameter for the physical properties of the container, since it interferes in characteristics such as relative permeability to the aqueous phase, residual oil distribution in the reservoir, operating characteristics with waterflood and recovery of crude oil. This study applied different types of microemulsion systems - MES - in sandstone reservoirs and evaluated their influences on wettability and residual oil recovery. For this purpose, four microemulsion were prepared by changing the nature of ionic surfactants (ionic and nonionic). Microemulsions could then be characterized by surface tension analysis, density, particle diameter and viscosity in the temperature range 30° C to 70° C. The studied oil was described as light and the sandstone rock was derived from the Botucatu formation. The study of the influence of microemulsion systems on sandstone wettability was performed by contact angle measurements using as parameters the rock treatment time with the MES and the time after the brine surface contact by checking the angle variation behavior. In the study results, the rock was initially wettable to oil and had its wettability changed to mixed wettability after treatment with MES, obtaining preference for water. Regarding rock-MES contact time, it was observed that the rock wettability changed more when the contact time between the surface and the microemulsion systems was longer. It was also noted only a significant reduction for the first 5 minutes of interaction between the treated surface and brine. The synthesized anionic surfactant, commercial cationic, commercial anionic and commercial nonionic microemulsion systems presented the best results, respectively. With regard to enhanced oil recovery performance, all systems showed a significant percentage of recovered oil, with the anionic systems presenting the best results. A percentage of 80% recovery was reached, confirming the wettability study results, which pointed the influence of this property on the interaction of fluids and reservoir rock, and the ability of microemulsion systems to perform enhanced oil recovery in sandstone reservoirs.

Estudo da influência de sistemas microemulsionados na molhabilidade de arenitos e na recuperação avançada de petróleo

Sandstone-type reservoir rocks are commonly responsible for oil accumulation. The wettability is an important parameter for the physical properties of the container, since it interferes in characteristics such as relative permeability to the aqueous phase, residual oil distribution in the reservoir, operating characteristics with waterflood and recovery of crude oil. This study applied different types of microemulsion systems - MES - in sandstone reservoirs and evaluated their influences on wettability and residual oil recovery. For this purpose, four microemulsion were prepared by changing the nature of ionic surfactants (ionic and nonionic). Microemulsions could then be characterized by surface tension analysis, density, particle diameter and viscosity in the temperature range 30° C to 70° C. The studied oil was described as light and the sandstone rock was derived from the Botucatu formation. The study of the influence of microemulsion systems on sandstone wettability was performed by contact angle measurements using as parameters the rock treatment time with the MES and the time after the brine surface contact by checking the angle variation behavior. In the study results, the rock was initially wettable to oil and had its wettability changed to mixed wettability after treatment with MES, obtaining preference for water. Regarding rock-MES contact time, it was observed that the rock wettability changed more when the contact time between the surface and the microemulsion systems was longer. It was also noted only a significant reduction for the first 5 minutes of interaction between the treated surface and brine. The synthesized anionic surfactant, commercial cationic, commercial anionic and commercial nonionic microemulsion systems presented the best results, respectively. With regard to enhanced oil recovery performance, all systems showed a significant percentage of recovered oil, with the anionic systems presenting the best results. A percentage of 80% recovery was reached, confirming the wettability study results, which pointed the influence of this property on the interaction of fluids and reservoir rock, and the ability of microemulsion systems to perform enhanced oil recovery in sandstone reservoirs.

Fragilariopsis kerguelensis images from sediment core PS1768-8

Background: Light microscopic analysis of diatom frustules is widely used both in basic and applied research, notably taxonomy, morphometrics, water quality monitoring and paleo-environmental studies. In these applications, usually large numbers of frustules need to be identified and / or measured. Although there is a need for automation in these applications, and image processing and analysis methods supporting these tasks have previously been developed, they did not become widespread in diatom analysis. While methodological reports for a wide variety of methods for image segmentation, diatom identification and feature extraction are available, no single implementation combining a subset of these into a readily applicable workflow accessible to diatomists exists. Results: The newly developed tool SHERPA offers a versatile image processing workflow focused on the identification and measurement of object outlines, handling all steps from image segmentation over object identification to feature extraction, and providing interactive functions for reviewing and revising results. Special attention was given to ease of use, applicability to a broad range of data and problems, and supporting high throughput analyses with minimal manual intervention. Conclusions: Tested with several diatom datasets from different sources and of various compositions, SHERPA proved its ability to successfully analyze large amounts of diatom micrographs depicting a broad range of species. SHERPA is unique in combining the following features: application of multiple segmentation methods and selection of the one giving the best result for each individual object; identification of shapes of interest based on outline matching against a template library; quality scoring and ranking of resulting outlines supporting quick quality checking; extraction of a wide range of outline shape descriptors widely used in diatom studies and elsewhere; minimizing the need for, but enabling manual quality control and corrections. Although primarily developed for analyzing images of diatom valves originating from automated microscopy, SHERPA can also be useful for other object detection, segmentation and outline-based identification problems.

Surface Ocean CO2 Atlas (SOCAT) V3

The Surface Ocean CO2 Atlas (SOCAT) is a synthesis of quality-controlled fCO2 (fugacity of carbon dioxide) values for the global surface oceans and coastal seas with regular updates. Version 3 of SOCAT has 14.5 million fCO2 values from 3646 data sets covering the years 1957 to 2014. This latest version has an additional 4.4 million fCO2 values relative to version 2 and extends the record from 2011 to 2014. Version 3 also significantly increases the data availability for 2005 to 2013. SOCAT has an average of approximately 1.2 million surface water fCO2 values per year for the years 2006 to 2012. Quality and documentation of the data has improved. A new feature is the data set quality control (QC) flag of E for data from alternative sensors and platforms. The accuracy of surface water fCO2 has been defined for all data set QC flags. Automated range checking has been carried out for all data sets during their upload into SOCAT. The upgrade of the interactive Data Set Viewer allows better interrogation of the SOCAT data collection and rapid creation of high-quality figures for scientific presentations. Automated data upload has been launched for version 4 and will enable more frequent SOCAT releases in the future. High-profile scientific applications of SOCAT include quantification of the ocean sink for atmospheric carbon dioxide and its long-term variation, detection of ocean acidification, as well as evaluation of coupled-climate and ocean-only biogeochemical models. Users of SOCAT data products are urged to acknowledge the contribution of data providers, as stated in the SOCAT Fair Data Use Statement. This living data publication documents changes in the methods and data sets used in this new version of the SOCAT data collection compared with previous publications of this data collection (Pfeil et al., 2013; Sabine et al., 2013; Bakker et al., 2014).

As representações externas - na resolução de problemas matemáticos no 2º e 3º anos do ensino básico

Relatório de estágio para obtenção de grau de mestre em Educação pré-escolar e Ensino do 1º ciclo do ensino básico

O uso da Divergência de Kullback-Leibler e da Divergência Generalizada como medida de similaridade em sistemas CBIR

The content-based image retrieval is important for various purposes like disease diagnoses from computerized tomography, for example. The relevance, social and economic of image retrieval systems has created the necessity of its improvement. Within this context, the content-based image retrieval systems are composed of two stages, the feature extraction and similarity measurement. The stage of similarity is still a challenge due to the wide variety of similarity measurement functions, which can be combined with the different techniques present in the recovery process and return results that aren’t always the most satisfactory. The most common functions used to measure the similarity are the Euclidean and Cosine, but some researchers have noted some limitations in these functions conventional proximity, in the step of search by similarity. For that reason, the Bregman divergences (Kullback Leibler and I-Generalized) have attracted the attention of researchers, due to its flexibility in the similarity analysis. Thus, the aim of this research was to conduct a comparative study over the use of Bregman divergences in relation the Euclidean and Cosine functions, in the step similarity of content-based image retrieval, checking the advantages and disadvantages of each function. For this, it was created a content-based image retrieval system in two stages: offline and online, using approaches BSM, FISM, BoVW and BoVW-SPM. With this system was created three groups of experiments using databases: Caltech101, Oxford and UK-bench. The performance of content-based image retrieval system using the different functions of similarity was tested through of evaluation measures: Mean Average Precision, normalized Discounted Cumulative Gain, precision at k, precision x recall. Finally, this study shows that the use of Bregman divergences (Kullback Leibler and Generalized) obtains better results than the Euclidean and Cosine measures with significant gains for content-based image retrieval.

JORNALISMO DIVERSIONAL: função, contornos e práticas na imprensa brasileira

Há, dentre os gêneros jornalísticos, especialmente os praticados na imprensa brasileira, um agrupamento a que José Marques de Melo atribui o nome de “jornalismo diversional”. Diferenciado por sua finalidade afeita à diversão e por abranger matérias reveladoras de histórias interessantes, a estrutura de seus formatos assimila elementos da literatura e da antropologia. Mas que motivações levam repórteres a desenvolver tal gênero e em quais circunstâncias? Quais métodos são adotados para sua feitura? Que forças agem aí? O estudo apresentado nesta tese buscou compreender como se dá esse processo, observando e comparando os modos de fazer adotados por nove jornalistas brasileiros, escolhidos por se submeterem a dois critérios inter-relacionados: 1) serem reconhecidos pelo meio jornalístico e/ou pelo mercado editorial como figuras que se destacam nesse exercício; e 2) terem produzido textos – com as características mencionadas – para jornais e/ou revistas e que, posteriormente, foram compilados em livro. A metodologia empregada tem vínculo estreito com a perspectiva teórica do newsmaking, valendo-se da técnica apropriada para uma observação que considera diferentes momentos da história (década de 1950 para cá): a entrevista, no seu tipo semiestruturado. O quadro de jornalistas entrevistados é formado por Audálio Dantas, Carlos Wagner, Consuelo Dieguez, Daniela Pinheiro, Eliane Brum, João Moreira Salles, José Hamilton Ribeiro, Ricardo Kotscho e Zuenir Ventura. Como resultado, defendemos que o gênero aqui posto como tema de pesquisa é cultivado por um seleto grupo de profissionais, capazes de direcionar olhares sensíveis sobre a realidade, para dela extrair detalhes e enredos que toquem nos sentimentos dos leitores, divertindo-os, ao propiciar gratificação estética, em contraponto à alienação que se costuma presumir. Trata-se de produção dependente de criatividade e curiosidade, de talento para redigir textos agradáveis e de métodos de apuração e de escrita altamente subjetivos, mas que aparecem como questão bem resolvida no agir profissional desses sujeitos. Essa capacidade também é que os possibilita conquistar espaço, em meio a embates com editores e diretores de redação, para elaborar matérias em que a autoria se sobressai. Por fim, a função de divertir, atribuída ao gênero, é confirmada pelos profissionais, ainda que de modo implícito

O PRINCÍPIO DA GRATUIDADE ATIVA NO PROGRAMA DE ASSISTÊNCIA ESTUDANTIL DO INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DE SÃO PAULO (IFSP) – CAMPUS CUBATÃO

Este trabalho realizado, inicialmente, com base na análise de alguns documentos referentes à legislação educacional brasileira vigente tem por objetivo desenvolver uma investigação acerca da aplicabilidade da Assistência Estudantil dentro do Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP). A partir da questão do Direito à Educação de todo cidadão, que está garantido em nossa Constituição Federal, o governo elaborou, no ano de 2010, o Programa Nacional de Assistência Estudantil (PNAES). Respaldados nesse Programa, o IFSP criou, em 2011, o Programa de Assistência Estudantil (PAE), dando validade e continuidade às ações desenvolvidas nos Campi para minimizar a evasão e o fracasso escolar, com vistas a garantir a permanência dos educandos no referido Instituto. Embora o PAE tenha sido implementado em todos os Campi do IFSP, no decorrer do presente trabalho analisamos e estudamos, exclusivamente, o Campus Cubatão, localizado na região da Baixada Santista devido a, dentre outros fatores, ter sido a primeira unidade descentralizada dos Institutos Federais do país. Assim, neste estudo, temos como objetivo analisar a estrutura de funcionamento do IFSP com o intuito específico de investigar o Campus de Cubatão, verificar as questões de Vulnerabilidade Social encontradas na destacada instituição, averiguar as ações do PAE que nascem do PNAES, observar a aplicabilidade desse programa com base no princípio da Gratuidade Ativa e do Direito à Educação de todo cidadão. Para tanto, utilizamos, fundamentalmente, além da legislação já mencionada, o princípio da Gratuidade Ativa de Melchior (2011) e o conceito de Vulnerabilidade Social proposto por Alves (1994) e por Abramovay (2002).

Análisis de la reglamentación europea, promulgada a raíz de los accidentes nucleares, y la determinación de la emisión gamma en alimentos importados

Novel scientific and technological progress require to seek new sources of electricity. Such response is, inter alia, nuclear energy. Nuclear power stations currently produce around a third of the electricity and 14% of the energy consumed in the European Union. A thorough aspect in the use and development of nuclear energy as power source is safety. Nuclear facilities are designed so that the probability of an accident that may affect people and environment was very low. Reasonably, preventive emergency plans take place in the own nuclear facilities in order to mitigate and minimize the consequences, and otherwise another emergency nuclear plans take place outside facilities. Monitoring programs are also conducted in the nearby nuclear facilities, according to the Recommendation reached on 8th June 2000 by the European Commission on the application of Article 36 of the Euratom Treaty for the checking of the levels of radioactivity in the environment, in order to assess the exposure to the whole population. The main objectives of these plans are to check the presence and evolution of radioactive elements and the radiation levels in the environment; to determinate the causes of its increase, if succeed; to estimate the radiological risk to the population; to set corrected measures, if necessary; to ensure legal compliance on the premises and; to verify the suitability of effluent monitoring program to detect radionuclides leaks and transfer to the environment...

Egalitarian state-transition systems (extended version)

We argue that considering transitions at the same level as states, as first-class citizens, is advantageous in many cases. Namely, the use of atomic propositions on transitions, as well as on states, allows temporal formulas and strategies to be more powerful, general, and meaningful. We define egalitarian structures and logics, and show how they generalize well-known state-based, event-based, and mixed ones. We present translations from egalitarian to non-egalitarian settings that, in particular, allow the model checking of LTLR formulas using Maude’s LTL model checker. We have implemented these translations as a prototype in Maude itself.