767 research outputs found

    CHARACTERIZATION OF TEMPORAL RAINFALL DISTRIBUTION IN FLORIANÓPOLIS, SANTA CATARINA, BRAZIL

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    Temporal rainfall distribution is an important information for the preparation of the design hyetograph, directly influencing peak flow. This study analyzes the temporal rainfall distribution of Florianópolis city. We used rainfall data from 1986 to 2012 obtained from the Brazilian National Meteorological Institute (code 83897). Heavy rainfall events were classified and individualized, and intensities were determined at each 5% interval of the duration. Rainfall was classified in Huff quartiles and identified by season and duration. Rainfall accumulation curves in the 10-90 percentiles were determined as well as 50% probability curves for each season and duration. The results showed that type I rainfall is the most frequent and that summer rains have a more anticipated pattern. Important differences were found between rainfall durations. The advance coefficient varies with rainfall duration, and averaged 0.38

    Workplace Adaptation of People with Disabilities in the Construction Industry

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    AbstractThe purpose of this research was to identify the workplace adaptations of workers with disabilities in the construction industry in Pernambuco, Brazil. The research was conducted in two stages. The first phase aimed to identify companies that have workers with disabilities in their building construction sites and which jobs they perform. In the second phase, phone call was made by the researchers to the construction sites to verify that workers with disabilities were working in the sites, explain the purpose of the research and request company authorization to participate in the study. After match the best day to visit, the researches visited the construction sites to interview each of the workers with disabilities and their supervisors that answered a socio-demographic questionnaire. The results of the research allowed to identify that the majority of workers with disabilities were male, had physical disabilities, not using prostheses or ortheses. Most deficiencies were caused by diseases, while more than half of individuals with disabilities did not complete high school. The most prevalent job was the laborer, while about half of the cases, companies made adjustments in the workplace, of which all were of organizational type, and no financial investment for labor inclusion was necessary

    Reabilitação de paciente infantil com múltiplos dentes natais e oligodontia na dentição permanente

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    The objective of the present article is to report an uncommon case of a boy with history of 11 natal lost teeth, all belonging to the normal series of primary dentition, associated with absence of up to 21 permanent tooth germs. Such a condition resulted in the necessity for oral rehabilitation. Partial removable prostheses were used as a choice of treatment, and the patient will have to be constantly followed up so that new treatment approaches can be performed according to the patient’s development.O objetivo do presente artigo é reportar um caso incomum de um paciente infantil com história de 11 dentes natais extraídos, todos da série normal da dentição decídua, além de ausência de 21 germes da dentição permanente. Essa condição tornou necessária a reabilitação protética deste paciente. O tratamento de escolha foi a utilização de próteses parciais removíveis, e o paciente terá que ser constantemente acompanhado para que, conforme seu crescimento, novas alternativas de tratamento sejam utilizadas

    Editorial: Endocrine Disruptors in Aquatic Vertebrates

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    As human activities progress, large amounts of substances are produced and released into the aquatic environment. Many of these substances can act as endocrine disrupting chemicals (EDCs) which can interact with the neuroendocrine system of exposed animals, altering their normal physiological function and their progeny. EDCs are substances capable -at different biological levels- of interfering with hormone synthesis and metabolism, receptors activation, gland structure, behavioral responses and epigenetic changes in exposed organisms. The objective of this Research Topic was i) to better understand the effects of these contaminants in real-world systems, at large spatial scales; ii) to demonstrate the mechanism of action of these EDCs in different phylogenetic groups.Fil: Moreira, Renata Guimarães. Universidade de Sao Paulo; BrasilFil: Carnevali, Oliana. Università Politecnica Delle Marche; ItaliaFil: Lo Nostro, Fabiana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentin

    DON'T WORRY, FOOL AROUND: considerações sobre o uso do reggae e do ska na publicidade brasileira

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    Nossa proposta é discutir a apropriação do ska e do reggae em dois comerciais brasileiros de automóveis. Apresentamos uma análise crítica de duas peças publicitárias que usam a música jamaicana como referência para a construção de universos simbólicos com atmosfera divertida, exótica, selvagem e sem compromisso. Neste trabalho, investigamos os valores, estereótipos e práticas sociais que emergem desses discursos.Palavras-chave: Publicidade. Reggae. EstereótiposResumenNuestra propuesta es discutir la apropiación del skay del reggae en dos comerciales brasileños de automóviles. Presentamos un análisis critica de dos piezas publicitarias que usan a música jamaicana como referencia para la construcción de universos simbólicos con atmósfera divertida, exótica, salvaje y sin compromiso. En este trabajo, investigamos los valores, estereotipos y prácticas sociales que emergen de estos discursos.Palabras clave: Publicidad. Reggae. EstereotiposAbstractOur proposal is to discuss the use of reggae music in Brazilian advertising. We present an analysis of two car commercials broadcasted in Brazil. Both television ads use Jamaican music as a reference to the construction of symbolic universes with a funny, exotic and wild atmosphere. In this paper, we investigate the appropriation of reggae and ska in Brazilian advertising in order to discover the values, stereotypes and social practices thatemerge from these discourses and narratives.Keywords: Advertising. Reggae. Stereotype

    Membranas Poliméricas a base de PMAA/Poliβciclodextrina para a liberação controlada de Losartan Potássico.

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    A eletrofiação é um método promissor para obtenção de fibras e partículas poliméricas com tamanhos nanométricos e micrométricos para a liberação controlada de fármacos utilizando forças eletrostáticas. O presente trabalho teve como objetivo produzir nanofibras uniaxiais hidrofóbicas a base de poli-β-ciclodextrina (poliβCD) com poli (ácido metacrílico), PMAA, por eletrofiação. As fibras foram desenvolvidas para a liberação de losartan potássico, fármaco pertencente à classe dos inibidores de angiotensina comumente utilizado em tratamentos anti-hipertensivos e, analisar as propriedades físico-químicas desse sistema. Foram produzidas blendas de PMAA / poliβCD nas proporções de 100: 0, 95: 5, 90: 10 e 80: 20. A poliβCD foi sintetizada por meio de reações de policondensação de epicloridrina com βCD alcançando um rendimento próximo a 32 %. As ciclodextrinas são oligossacarídeos cíclicos, compostos por unidades de D-glicose, unidas por ligações glicosídicas α (1→4) e derivados da hidrólise enzimática do amido As cavidades presentes nas CDs são capazes de formar complexos de inclusão com moléculas orgânicas. O PMAA é um polímero biodegradável e biocompatível pertencente à classe dos acrílicos. O sistema de PMAA / poliβCD para a liberação de losartan potássico foi caracterizado por espectroscopia de absorção na região do infravermelho por transformada de Fourier com Refletância Total Atenuada – FTIR-ATR, espectroscopia de absorção ultravioleta-visível - UV-Vis, ângulo de contato da água com a superfície do material, análise termogravimétrica - TG, microscopia eletrônica de varredura - MEV, calorimetria de titulação isotérmica - ITC e estudo de cinética de liberação in vitro. A polimerização foi indicada pela avaliação dos perfis no FTIR-ATR e TG. Por meio das imagens de MEV identificou-se fibras morfologicamente uniformes, com ausência de gotas, poros e com diâmetro entre 250-450 nm. A interação entre as moléculas PMAA / poliβCD e losartan/PMAA demonstrou-se forte (Kₐ ≥ 10⁵) e espontânea. Após 15 dias dos estudos de cinética de liberação in vitro observou-se um perfil de dissolução lento e foi quantificado somente ≈ 30 % do fármaco, comprovando a afinidade do fármaco pela matriz. Além disso, esse perfil foi comparado a três modelos matemáticos, sendo melhor descrito pelo modelo de Higuchi e, foi classificado como difusão de Fick. Frente aos resultados, as blendas de PMAA / poliβCD podem ser uma boa estratégia para o desenvolvimento de sistemas poliméricos para liberação controlada de fármacos

    CHARACTERIZATION OF THE PREDOMINANT WIND SPEED AND DIRECTION IN SANTA CATARINA, BRAZIL

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    Although the state of Santa Catarina has little variation in latitude, it presents significant spatial variations in its climate. Wind is considered an important meteorological variable, but it is not intensively studied and there is a shortage of information on this subject in the region of Santa Catarina. Thus, the objective of this article was to analyze the behavior of the winds in five regions of the state, with different aspects. For that, daily data from National Institute of Meteorology of direction and speed of the winds were used from 1974 to 2016. The conventional meteorological stations used were: Chapecó, Campos Novos, Lages, Indaial and Florianópolis. Regarding wind speed, Florianópolis and Campos Novos registered the highest speeds during the whole year. In the analysis of wind direction, the prevalence of South Atlantic subtropical anticyclone was observed in most of the year in Forianópolis (circulation going north), Lages and Campos Novos (turning northeast) and Chapecó (predominant wind direction in the este). For Indaial, the prevalence was the effect of the valley-mountain breeze.Although the state of Santa Catarina has little variation in latitude, it presents significant spatial variations in its climate. Wind is considered an important meteorological variable, but it is not intensively studied and there is a shortage of information on this subject in the region of Santa Catarina. Thus, the objective of this article was to analyze the behavior of the winds in five regions of the state, with different aspects. For that, daily data from National Institute of Meteorology of direction and speed of the winds were used from 1974 to 2016. The conventional meteorological stations used were: Chapecó, Campos Novos, Lages, Indaial and Florianópolis. Regarding wind speed, Florianópolis and Campos Novos registered the highest speeds during the whole year. In the analysis of wind direction, the prevalence of South Atlantic subtropical anticyclone was observed in most of the year in Forianópolis (circulation going north), Lages and Campos Novos (turning northeast) and Chapecó (predominant wind direction in the este). For Indaial, the prevalence was the effect of the valley-mountain breeze.Key-words: Wind climatology; Synoptic circulation; Local circulation; Santa Catarina

    Elemental characterization of the airborne pollen surface using Electron Probe Microanalysis (EPMA)

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    Recent worldwide increase in pollinoses has been attributed to the synergy between pollen and pollutants. We used EPMA for the elemental characterization of the airborne pollen surface in order to find out what occurs to the wall of pollen grains when they are together with other atmospheric pollutants. Analyses were performed both to airborne pollen and to pollen that was collected from Acer spp., Platanus spp. and Pinus spp. trees. Airborne samples were assembled using a Hirst-type volumetric spore sampler set in the coastal city of Porto, Portugal. Airborne pollen samples showed major elemental differences when compared to the control pollen sample of the same species, namely in the amounts of Cl, Na and Mg, which very significantly increased on airborne samples, revealing an important influence of the ocean. Mineral dust also contributed to modify the pollen surface, by increasing Si contents on Acer spp. and Platanus spp. airborne pollen. Our results revealed consistent positive effects of the relative humidity and the precipitation in the increase of Cl, Na and Mg relative amounts on the pollen surface. This study shows that pollen grains have the ability to adsorb and/or absorb other materials, which may contribute to enhance pollen's harmful effects on people's health
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