SIMULATIONS OF WINDS OF WEAK-LINED T TAURI STARS. II. THE EFFECTS OF A TILTED MAGNETOSPHERE AND PLANETARY INTERACTIONS

Based on our previous work, we investigate here the effects on the wind and magnetospheric structures of weak-lined T Tauri stars due to a misalignment between the axis of rotation of the star and its magnetic dipole moment vector. In such a configuration, the system loses the axisymmetry presented in the aligned case, requiring a fully three-dimensional (3D) approach. We perform 3D numerical magnetohydrodynamic simulations of stellar winds and study the effects caused by different model parameters, namely the misalignment angle theta(t), the stellar period of rotation, the plasma-beta, and the heating index.. Our simulations take into account the interplay between the wind and the stellar magnetic field during the time evolution. The system reaches a periodic behavior with the same rotational period of the star. We show that the magnetic field lines present an oscillatory pattern. Furthermore, we obtain that by increasing theta(t), the wind velocity increases, especially in the case of strong magnetic field and relatively rapid stellar rotation. Our 3D, time-dependent wind models allow us to study the interaction of a magnetized wind with a magnetized extrasolar planet. Such interaction gives rise to reconnection, generating electrons that propagate along the planet`s magnetic field lines and produce electron cyclotron radiation at radio wavelengths. The power released in the interaction depends on the planet`s magnetic field intensity, its orbital radius, and on the stellar wind local characteristics. We find that a close-in Jupiter-like planet orbiting at 0.05 AU presents a radio power that is similar to 5 orders of magnitude larger than the one observed in Jupiter, which suggests that the stellar wind from a young star has the potential to generate strong planetary radio emission that could be detected in the near future with LOFAR. This radio power varies according to the phase of rotation of the star. For three selected simulations, we find a variation of the radio power of a factor 1.3-3.7, depending on theta(t). Moreover, we extend the investigation done in Vidotto et al. and analyze whether winds from misaligned stellar magnetospheres could cause a significant effect on planetary migration. Compared to the aligned case, we show that the timescale tau(w) for an appreciable radial motion of the planet is shorter for larger misalignment angles. While for the aligned case tau(w) similar or equal to 100 Myr, for a stellar magnetosphere tilted by theta(t) = 30 degrees, tau(w) ranges from similar to 40 to 70 Myr for a planet located at a radius of 0.05 AU. Further reduction on tau(w) might occur for even larger misalignment angles and/or different wind parameters.

Mosaicos de áreas protegidas e unidades de conservação. Dificuldades e desafios num arranjo de governança híbrida: o caso do Mosaico Bocaina

O objetivo principal desta tese é compreender o funcionamento de um mosaico de áreas protegidas e unidades de conservação – o Mosaico Bocaina. Entende-se hoje que a política de conservação de biodiversidade depende da criação e adequada gestão de áreas protegidas. No entanto, a apropriação estatal de porções do território se deu por meio de decretos de criação de unidades de conservação num período em que não era obrigatória a consulta à população que habita essas localidades, o que acabou gerando inúmeros inconvenientes para ambos os lados e um verdadeiro imbróglio jurídico quando se trata do reconhecimento dos direitos difusos. O Mosaico Bocaina foi criado por uma portaria do Ministério do Meio Ambiente no final de 2006. Desde 2007 vem tentando se firmar como um instrumento de planejamento e gestão integrada e participativa de um conjunto unidades de conservação. Tenta-se também mitigar e buscar possíveis soluções para conflitos fundiários históricos criados pela sobreposição de territórios oficiais e tradicionais. Por meio da análise sistemática dos documentos produzidos no âmbito do seu Conselho Consultivo, e do acompanhamento das discussões de temas caros aos atores interagindo nesse fórum de governança híbrida, procuramos entender por que certos temas avançam e entram na agenda, sendo encaminhados para as instâncias decisórias competentes, e outros nem sequer conseguem ser processados, sendo bloqueados assim que entram na pauta. Identificamos que tal processo é resultado da dinâmica de configuração de forças de duas coalizões de defesa que disputam, mais que compartilham, espaços no território, e sempre polarizaram as discussões. De um lado, a coalizão pró-biodiversidade, que agrega gestores de unidades de conservação (tanto de proteção integral quanto de uso sustentado) e outros atores cujo foco nem sempre é uma agenda claramente conservacionista, mas excludente. De outro, a coalizão pró-sociodiversidade, que luta pela adoção de uma agenda socioambientalista e alternativa, com a inclusão e garantia do protagonismo das comunidades tradicionais nos projetos de desenvolvimento local sustentável. Acreditamos que essa polarização e dificuldade de construção de consensos baseados em princípios de colaboração e cooperação é resultado da própria complexidade da gestão da governança em fóruns híbridos como esse, complexidade esta derivada da coexistência de valores, preferências e interesses muitas vezes divergentes. Mas também conseguimos identificar outros fatores específicos, resultados de características locais e/ou escolhas realizadas pelo coletivo de atores ao longo da trajetória. A enorme assimetria de informação e poder entre os atores participantes, por exemplo, dificulta o desenvolvimento de confiança e mecanismos de reciprocidade. A adoção de uma coordenação colegiada, por outro lado, acabou comprometendo o surgimento de uma liderança ou instância neutra que funcionasse como mediadora dos processos de negociação entre as partes. O profundo desconhecimento das possibilidades – mas, sobretudo, também dos limites – dos mosaicos de áreas protegidas e unidades de conservação como instrumento de gestão territorial dentro do amplo Sistema Nacional de Unidades de Conservação gera expectativas de solução de conflitos que dependem de decisões que são tomadas alhures, o que acaba frustrando e desmobilizando os participantes de ambos os lados. A imagem de aparente apatia dos órgãos ambientais federais e estaduais, por sua vez, derivada da morosidade dos processos públicos, tende a infundir ainda mais incerteza no relacionamento entre os atores.

Desempenho térmico de coberturas: Um estudo comparativo entre as telhas de material reciclado, de fibra e betume, fibrocimento e cerâmica

This study aims to compare the thermal performance of tiles made from recycled material (waste packaging cardboard with aluminized film) with the tiles of fiber and bitumen, fiber cement and red ceramic with the aim of verifying the suitability of tile to be used in hot and humid climate of low latitude. The samples were selected according to the availability from Natal - RN market, as they are sold to the consumers. The methodology was based on studies that used experimental apparatus composed of thermal chambers heated by banks of incandescent bulbs, to analyze the thermal performance of materials. The tiles in the study were submitted to analysis of thermal performance, thermophysical properties and absorptance, using chambers of thermal performance, measuring the thermophysical properties and portable spectrometer, respectively. Comparative analysis of thermal performance between two samples of the recycled material with dimple sizes and different amounts of aluminum were made, in order to verify, if these characteristics had some interference on the thermal performance of them; the results showed no significant performance differences between the samples. The data obtained in chambers of thermal performance and confirmed by statistical analysis, showed, that the tile of recycled material have similar thermal performance to the tile of fiber cement. In addition to these tests was carried out the automatic monitoring of a building covered with tiles of recycled material, to verify its thermal performance in a real situation. The results showed that recycled shingles must be used with technical criteria similar to those used for fiber cement tiles, with regard to the heat gain into the building. Within these criteria should be taken into account local characteristics, especially in regions with hot and humid climate, and its use must be associated, according to the literature, to elements of thermal insulation and use of passive techniques such as vented attics, ceilings and right foot higher

Análise da precipitação no semi-árido potiguar

The semiarid rainfall regime is northeastern Brazil is highly variable. Climate processes associated with rainfall are complex and their effects may represent extreme situations of drought or floods, which can have adverse effects on society and the environment. The regional economy has a significant agricultural component, which is strongly influenced by weather conditions. Maximum precipitation analysis is traditionally performed using the intensity-duration-frequency (IDF) probabilistic approach. Results from such analysis are typically used in engineering projects involving hydraulic structures such as drainage network systems and road structures. On the other hand, precipitation data analysis may require the adoption of some kind of event identification criteria. The minimum inter-event duration (IMEE) is one of the most used criteria. This study aims to analyze the effect of the IMEE on the obtained rain event properties. For this purpose, a nine-year precipitation time series (2002- 2011) was used. This data was obtained from an automatic raingauge station, installed in an environmentally protected area, Ecological Seridó Station. The results showed that adopted IMEE values has an important effect on the number of events, duration, event height, mean rainfall rate and mean inter-event duration. Furthermore, a higher occurrence of extreme events was observed for small IMEE values. Most events showed average rainfall intensity higher than 2 mm.h-1 regardless of IMEE. The storm coefficient of advance was, in most cases, within the first quartile of the event, regardless of the IMEE value. Time series analysis using partial time series made it possible to adjust the IDF equations to local characteristics

Improved geometric parameterisation techniques for continuation power flow

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Fatores de sucesso ou insucesso do turismo ambientalmente sustentável : percepção das autoridades públicas no pólo costa das dunas do Rio Grande do Norte

This study aims to compare the thermal performance of tiles made from recycled material (waste packaging cardboard with aluminized film) with the tiles of fiber and bitumen, fiber cement and red ceramic with the aim of verifying the suitability of tile to be used in hot and humid climate of low latitude. The samples were selected according to the availability from Natal RN market, as they are sold to the consumers. The methodology was based on studies that used experimental apparatus composed of thermal chambers heated by banks of incandescent bulbs, to analyze the thermal performance of materials. The tiles in the study were submitted to analysis of thermal performance, thermophysical properties and absorptance, using chambers of thermal performance, measuring the thermophysical properties and portable spectrometer, respectively. Comparative analysis of thermal performance between two samples of the recycled material with dimple sizes and different amounts of aluminum were made, in order to verify, if these characteristics had some interference on the thermal performance of them; the results showed no significant performance differences between the samples. The data obtained in chambers of thermal performance and confirmed by statistical analysis, showed, that the tile of recycled material have similar thermal performance to the tile of fiber cement. In addition to these tests was carried out the automatic monitoring of a building covered with tiles of recycled material, to verify its thermal performance in a real situation. The results showed that recycled shingles must be used with technical criteria similar to those used for fiber cement tiles, with regard to the heat gain into the building. Within these criteria should be taken into account local characteristics, especially in regions with hot and humid climate, and its use must be associated, according to the literature, to elements of thermal insulation and use of passive techniques such as vented attics, ceilings and right foot higher

Open urban spaces quality: A study in a historical square in Bath - UK

The quality of open urban spaces is very important for urban vitality. Nowadays urban designers have to face the great challenge of designing urban spaces able to respond to people's need for liveable spaces. The success of these spaces depends on various aspects and the microclimatic condition has been recognized as one of the most influential. However, studies on thermal comfort in open space have shown that the user's thermal sensation does not depend only on microclimate parameters but also on other local qualitative aspects. Thus, environmental quality evaluation of successful public spaces can contribute to understand this issue. This paper focuses on a case study regarding Queen Square's environmental quality, a public space of historical importance in Bath-UK. The first stage of the research, a study on local characteristics and people observations, allowed a preliminary evaluation of the space performance, their social aspects, while it characterized and quantified the hourly variation of the space use in different days and seasons. In the second stage, short microclimatic surveys were carried out simultaneously with a perception survey through a questionnaire. The results show the strong vitality of the square and socioenvironmental significance, not only for its location in the urban context, but also for its historical value. The environmental quality of the square contributes to the users' sensation of comfort even in adverse climatic conditions. This research is part of a project that aims to investigate the impact of the environmental stimuli in the use of open spaces and intend to develop design strategies that aim to maximise the use of open spaces in different weather conditions.

Análise da variação espaço-temporal em diferentes escalas sobre a distribuição ecológica das comunidades de macroalgas de duas bacias de drenagem da região centro-sul do estado do Paraná

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Processo e produção visual do graffitti na cidade de Bauru/SP - Brasil: um estudo etnográfico

The graffiti is a calligraphic inscription or a drawn painted or engraved over a supported not normally used for this purpose. This artistic manifestation has been gaining more notoriety as an element of expression, reflection and actuation in the urban environment, since it is present in the streets and public ways reaching many observers with different repertoires and looks. This recent movement in Brazil has its first records in the early 80’s, but it is noteworthy that this event continues in an emergence process, consolidating increasingly as an artistic movement, in broad development, elaborating new technics, readjust and re-signifying its elements, re-improving and generating different values for the spaces. With the purpose to map the graffiti artists in Bauru/SP – Brazil, it was done an ethnography that allows to point some specific local characteristics; the relation between the artist and the city, and; the relation between the townsman and the graffiti.

A arte de recriar lendas e mitos: inrtextualidade e antropofagismo

Brazilian folklore is rich in legends that inhabit in the imaginary of people and are believed to have originated among Brazilian indigenous peoples and the Africans who were enslaved by Portuguese settlers. However, when those stories are compared with the legends of the Iberian Peninsula , one can notice that a lot of elements in the Brazilian legends clearly reflect, for example, aspects of the popular narratives from Galicia and Portugal, such as “The moors” and “Yara’s legend”; “O trasno” and “Saci pererê”. The objective of this paper is to analyze those cultural traces by means of Comparative Literary and Intertextuality analysis, by observing how the context , the ruling ideology, and both social and cultural aspects retake the stories that are known to a certain culture and readapt them according to the traditions of another, thus producing new discourse-texts with local characteristics.

Implantação da vigilância do câncer relacionado ao trabalho em Londrina-PR entre 2011 e 2014

Pós-graduação em Saúde Coletiva - FMB

Strategies and results of the oral cancer prevention campaign among the elderly in Sao Paulo, Brazil, 2001 to 2009

Objective. To describe the strategies and results obtained by the early diagnosis and prevention of an oral cancer campaign targeting the population aged 60 years or older developed since 2001 in the state of Sao Paulo. Methods. The main strategies used to develop the campaign were described based on the review of documents issued by the Health Ministry, National Cancer Institute, Sao Paulo State Health Department, Oncocentro Foundation of Sao Paulo, Sao Paulo City Health Department, School of Public Health at the University of Sao Paulo (USP), and Santa Marcelina Health Care Center. The impact of the campaign on the incidence of new cases of oral cancer in the target population was evaluated. Results. In 2001, 90 886 elderly were examined vs. 629 613 in 2009. The following strategies were identified: training of professionals, development of printed materials to guide municipal governments in developing the campaign and using standardized codes and criteria, guidelines for data consolidation, establishment of patient referral flows, practical training with a specialist at the basic health care unit after the follow-up examination of individuals presenting changes in soft tissues, and increase in the number of oral diagnosis services. Between 2005 and 2009, there was a significant reduction in the rate of confirmed cases of oral cancer per 100 000 individuals examined, from 20.89 to 11.12 (P = 0.00003). Conclusions. The campaign was beneficial to the oral health of the elderly and could be extended to include other age groups and regions of the country. It may also provide a basis for the development of oral cancer prevention actions in other countries, as long as local characteristics are taken into account.

Controls on fish distribution and abundance in temporary wetlands

Our main goal was to determine if fish distribution and adundance in temporary wetlands were shaped primarily by large-scale (landscape) or small-scale (local) characteristics and to investigate the influence of cattle ranching on fish assemblages. A total of 24 temporary ponds were selected at the Kissimmee Prairie Sanctuary and the Mac- Arthur Agro-Ecology Research Center. Each wetland was sampled for fish using throw traps and dip nets during 1999. Landscape processes (connectivity to permanent water bodies) predominately influenced fish assemblages, although local processes (depth–hydroperiod) were also important. Furthermore, no colonizing species went locally extinct before wetlands began to dry. Our findings suggest that large-scale processes that influence colonization dynamics are of more importance than small-scale processes that influence extinction dynamics. Finally, hydrological changes (ditching) associated with agriculture (cattle ranching) have adversely affected temporary wetland fish assemblages by reducing wetland hydroperiods and connectivity.

Arquitetura bioclimática para instituição de ensino fundamental em São Gonçalo do Amarante/RN

In the design of a building process must consider climatic variations in the region, the external conditions and the use of available resources in nature, like the sun, vegetation, rain and winds, to provide a built environment with comfort and environment reduced energy expenditure. However, increasing urbanization, often with an occupancy of disordered ground comes disregarding this knowledge and disregarding local characteristics, drastically reducing the green areas. This disordered occupation associated with the reduction of green spaces, is modifying aspects of climate and thus, damaging the thermal comfort of users. Given this situation was born the question: What projetuais strategies can bring better thermal conditions to an educational building located in a region of hot and humid weather? Thus, faced with two important issues , education and environmental comfort , the research is justified by the fact that there is a large national demand for expansions and renovations in its public schools , but not in most areas provides students with quality for good learning development. This paper aims to draw up a project for establishment of Primary Education with the application of the concepts of bioclimatic, highlighting the use of vegetation as a regulatory element of the climate. Initially we carried out a literature search; we analyzed architectural solutions and set up the site. The next phases, called understanding, were raised with the laws, rules and environmental restrictions. Subsequently, the program needs and the development of architectural design was defined. The conclusion of this paper presents the definition of criteria and solutions for the use of vegetation to design of bioclimatic architecture in hot and humid climates and contributes a catalog of plant species for schools in the metropolitan region of Natal, RN.

Desempenho térmico de coberturas: Um estudo comparativo entre as telhas de material reciclado, de fibra e betume, fibrocimento e cerâmica

This study aims to compare the thermal performance of tiles made from recycled material (waste packaging cardboard with aluminized film) with the tiles of fiber and bitumen, fiber cement and red ceramic with the aim of verifying the suitability of tile to be used in hot and humid climate of low latitude. The samples were selected according to the availability from Natal - RN market, as they are sold to the consumers. The methodology was based on studies that used experimental apparatus composed of thermal chambers heated by banks of incandescent bulbs, to analyze the thermal performance of materials. The tiles in the study were submitted to analysis of thermal performance, thermophysical properties and absorptance, using chambers of thermal performance, measuring the thermophysical properties and portable spectrometer, respectively. Comparative analysis of thermal performance between two samples of the recycled material with dimple sizes and different amounts of aluminum were made, in order to verify, if these characteristics had some interference on the thermal performance of them; the results showed no significant performance differences between the samples. The data obtained in chambers of thermal performance and confirmed by statistical analysis, showed, that the tile of recycled material have similar thermal performance to the tile of fiber cement. In addition to these tests was carried out the automatic monitoring of a building covered with tiles of recycled material, to verify its thermal performance in a real situation. The results showed that recycled shingles must be used with technical criteria similar to those used for fiber cement tiles, with regard to the heat gain into the building. Within these criteria should be taken into account local characteristics, especially in regions with hot and humid climate, and its use must be associated, according to the literature, to elements of thermal insulation and use of passive techniques such as vented attics, ceilings and right foot higher