21 research outputs found

    Avaliação dos índices PET e UTCI em espaços públicos centrais, Palmas, Tocantins

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    Esse artigo é fruto de dois projetos de iniciação científica do curso de Engenharia Civil do Instituto Federal de Educação, Ciência e Tecnologia do Tocantins. Tem como objetivo avaliar a aplicação de dois índices de conforto térmico, PET e UTCI, em espaços urbanos externos na cidade de Palmas–TO. A escolha do tema deve-se à carência de pesquisas com conforto térmico em áreas externas na cidade, bem como devido à impossibilidade de controle artificial desses espaços. A estação seca é o período foco da pesquisa, tendo em vista que é a estação de maiores temperaturas máximas do ano, nos meses de agosto e setembro. A pesquisa buscou determinar a eficiência dos índices de conforto térmico selecionados com as respostas das pessoas, utilizando proposta comparativa de recentes estudos brasileiros. Percebeu-se que o índice UTCI tem maior aproximação da sensação térmica real dos entrevistados, apesar de, da mesma forma que o PET, superestimar a percepção de conforto. O presente estudo abre mais uma possibilidade na caracterização do conforto térmico, contribuindo para futuras pesquisas sobre o tema em climas semelhantes. Sugere-se a continuidade dos estudos destes índices com a sua respectiva calibração para a região em estudo.Termos para indexação: conforto térmico, espaços abertos, índices de conforto térmico Assessment of indices PET and UTCI in central public spaces, Palmas, TocantinsThis paper is the result of two scientific initiation projects of Civil Engineering Course at the Federal Institute of Education, Science and Technology of Tocantins. It has as its objective to evaluate the application of two thermal comfort indices, PET and UTCI, in outdoor urban spaces in Palmas–TO. The choice of topic is due to the lack of research on thermal comfort in outdoor areas in this city. Also, its due to the impossibility of artificial control of these spaces. The dry season is the focus of this research, considering that is the season with higher values of temperature, in months August and September. The research quested to determine the application efficiency of the selected thermal comfort indexes with responses of the inhabitants, using comparative proposal of recent brazilian researches. It is perceived that the UTCI index is nearer the real thermal sensation of respondents, though, it overestimates the perception of comfort just as the PET. This study gives one more possibility for the characterization of thermal comfort, contributing to future research on the subject in similar climates. It is suggested continuing studies of these indices with calibration of them for the region studied.Index terms: thermal comfort, open spaces, thermal comfort indice

    Thermal and Acoustic Properties of Rubberized Mortars for Coatings

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    Recycled crumb rubber can be sustainable used in mortar both to mitigate nature aggregate consumption, reducing environmental pollution, as well, to improve the acoustic and thermal performance of buildings, without damaging its mechanical properties. This paper explores workability, microstructure, mechanical, thermal and acoustic properties considering increasing contents of crumb rubber (0%, 5%, 10%, 15% and 20% replacement, by volume, of fine aggregate). Mortar characterization tests were carried out in the fresh and hardened state. It has been found that replacing the aggregate with scrap tyre rubber reduced the compressive strength on average 12% and 67% and for tensile strength 35% and 53%, for the contents of 10% and 20% respectively, compared to the reference. Furthermore, it was found that the reductions in thermal conductivity reached 16% and 29% and an increase in acoustic attenuation on average 12% and 13%. Moreover, scanning electron microscopy images were analyzed, justifying the mechanical results obtained. Although the experimental results indicated that the workability and mechanical strengths decreased with the increase of rubber replacement rate, the studied mixtures met the standard specifications, and thus suitable for walls and ceilings coating applications, improve the acoustic and thermal performance of buildings and as a sustainable material

    O impacto social e qualidade de vida de um indivĂ­duo portador da SĂ­ndrome de Tourette

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    A Síndrome de Tourette (ST) representa um transtorno complexo do sistema nervoso central, que afeta preponderantemente o circuito mesolímbico. Sua manifestação inicial ocorre, em sua maioria, durante a infância ou adolescência, podendo persistir por um período extenso na ausência de intervenções terapêuticas apropriadas. Caracterizada clinicamente pela presença de tiques motores e vocais, a ST exerce um impacto substancial na qualidade de vida e nas relações sociais dos indivíduos acometidos.Apesar de sua etiologia ainda não estar plenamente elucidada, há evidências sugerindo que fatores genéticos e alterações no desenvolvimento neurobiológico desempenhem papéis cruciais em sua manifestação. O diagnóstico é primariamente clínico, carecendo de exames de imagem ou laboratoriais específicos para sua confirmação. Uma avaliação cuidadosa voltada para a identificação de comorbidades psiquiátricas associadas é mandatória, visto que há uma prevalência acentuada desses distúrbios neuropsiquiátricos concomitantes em pacientes com ST.Dada a complexidade da ST e o profundo comprometimento funcional associado, uma abordagem terapêutica individualizada e centrada nas necessidades específicas do paciente se faz necessária. O tratamento deve ser orientado para o manejo dos sintomas mais gravosos ou que mais prejudicam a qualidade de vida do indivíduo. Portanto, este estudo visa analisar, à luz das evidências atuais, as comorbidades frequentemente associadas à Síndrome de Tourette, bem como elucidar o impacto destas na vida social e no bem-estar dos pacientes afetados

    Simultaneous presentation of trichotillomania and neurotic excoriation in a schizophrenic patient: case report: Apresentação simultânea de tricotilomania e escoriação neurótica em paciente esquizofrênico: relato de caso

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    The present report aims to describe the case of a patient with excoriation disorder and trichotillomania comorbid with schizophrenia. This is a patient diagnosed with schizophrenia more than 30 years ago and who had a stabilized psychic condition. In one of his periodic evaluations, he began to demonstrate compulsive acts of picking at the skin and from then onwards, lesions appeared on the face, upper limbs and scalp with progressive involvement of other regions. The approach of these mental disorders represented a challenge, because despite a growing number of studies, clinical and therapeutic questions remain open

    Pervasive gaps in Amazonian ecological research

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    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

    Pervasive gaps in Amazonian ecological research

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    Alterações cognitivas na infecção pelo HIV: uma revisão sistemática: Cognitive changes in HIV infection: a systematic review

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    Provocada pelo vírus da imunodeficiência humana, com a síndrome da imunodeficiência adquirida, numa pessoa tem o seu sistema imunológico prejudicado, tornando-se suscetível a outras doenças e infecção. Tem-se a estimativa de que 50% dos infectados com o referido vírus podem sofrer alterações cognitivas. Diante disso, este estudo tem como objetivo refletir sobre mudanças estruturais cerebrais e comprometimento cognitivo em pacientes com HIV. Portanto, trata-se de uma revisão sistemática de literatura, desenvolvida a partir da seleção de estudos nas bases de dados Scielo, Pubmed e BVS/Medline a partir do uso de descritores DeCS/MeSH e aplicação de critérios de inclusão e exclusão. Após a análise e interpretação dos dados, concluiu-se que há uma significativa prevalência de HAND em adultos infectados por HIV, no que se refere a alterações cognitivas, especialmente entre pacientes do sexo feminino, de baixa escolaridade e renda, com diagnóstico tardio e baixa quantidade de linfócitos CD4 no início do tratamento. Entre essas pessoas, revelam-se comprometimentos quanto à memória, atenção, controle de impulsos, velocidade de processamento e motora, dentre outros

    Pervasive gaps in Amazonian ecological research

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    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

    ATLANTIC EPIPHYTES: a data set of vascular and non-vascular epiphyte plants and lichens from the Atlantic Forest

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    Epiphytes are hyper-diverse and one of the frequently undervalued life forms in plant surveys and biodiversity inventories. Epiphytes of the Atlantic Forest, one of the most endangered ecosystems in the world, have high endemism and radiated recently in the Pliocene. We aimed to (1) compile an extensive Atlantic Forest data set on vascular, non-vascular plants (including hemiepiphytes), and lichen epiphyte species occurrence and abundance; (2) describe the epiphyte distribution in the Atlantic Forest, in order to indicate future sampling efforts. Our work presents the first epiphyte data set with information on abundance and occurrence of epiphyte phorophyte species. All data compiled here come from three main sources provided by the authors: published sources (comprising peer-reviewed articles, books, and theses), unpublished data, and herbarium data. We compiled a data set composed of 2,095 species, from 89,270 holo/hemiepiphyte records, in the Atlantic Forest of Brazil, Argentina, Paraguay, and Uruguay, recorded from 1824 to early 2018. Most of the records were from qualitative data (occurrence only, 88%), well distributed throughout the Atlantic Forest. For quantitative records, the most common sampling method was individual trees (71%), followed by plot sampling (19%), and transect sampling (10%). Angiosperms (81%) were the most frequently registered group, and Bromeliaceae and Orchidaceae were the families with the greatest number of records (27,272 and 21,945, respectively). Ferns and Lycophytes presented fewer records than Angiosperms, and Polypodiaceae were the most recorded family, and more concentrated in the Southern and Southeastern regions. Data on non-vascular plants and lichens were scarce, with a few disjunct records concentrated in the Northeastern region of the Atlantic Forest. For all non-vascular plant records, Lejeuneaceae, a family of liverworts, was the most recorded family. We hope that our effort to organize scattered epiphyte data help advance the knowledge of epiphyte ecology, as well as our understanding of macroecological and biogeographical patterns in the Atlantic Forest. No copyright restrictions are associated with the data set. Please cite this Ecology Data Paper if the data are used in publication and teaching events. © 2019 The Authors. Ecology © 2019 The Ecological Society of Americ

    Mortality from gastrointestinal congenital anomalies at 264 hospitals in 74 low-income, middle-income, and high-income countries: a multicentre, international, prospective cohort study

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    Summary Background Congenital anomalies are the fifth leading cause of mortality in children younger than 5 years globally. Many gastrointestinal congenital anomalies are fatal without timely access to neonatal surgical care, but few studies have been done on these conditions in low-income and middle-income countries (LMICs). We compared outcomes of the seven most common gastrointestinal congenital anomalies in low-income, middle-income, and high-income countries globally, and identified factors associated with mortality. Methods We did a multicentre, international prospective cohort study of patients younger than 16 years, presenting to hospital for the first time with oesophageal atresia, congenital diaphragmatic hernia, intestinal atresia, gastroschisis, exomphalos, anorectal malformation, and Hirschsprung’s disease. Recruitment was of consecutive patients for a minimum of 1 month between October, 2018, and April, 2019. We collected data on patient demographics, clinical status, interventions, and outcomes using the REDCap platform. Patients were followed up for 30 days after primary intervention, or 30 days after admission if they did not receive an intervention. The primary outcome was all-cause, in-hospital mortality for all conditions combined and each condition individually, stratified by country income status. We did a complete case analysis. Findings We included 3849 patients with 3975 study conditions (560 with oesophageal atresia, 448 with congenital diaphragmatic hernia, 681 with intestinal atresia, 453 with gastroschisis, 325 with exomphalos, 991 with anorectal malformation, and 517 with Hirschsprung’s disease) from 264 hospitals (89 in high-income countries, 166 in middleincome countries, and nine in low-income countries) in 74 countries. Of the 3849 patients, 2231 (58·0%) were male. Median gestational age at birth was 38 weeks (IQR 36–39) and median bodyweight at presentation was 2·8 kg (2·3–3·3). Mortality among all patients was 37 (39·8%) of 93 in low-income countries, 583 (20·4%) of 2860 in middle-income countries, and 50 (5·6%) of 896 in high-income countries (p<0·0001 between all country income groups). Gastroschisis had the greatest difference in mortality between country income strata (nine [90·0%] of ten in lowincome countries, 97 [31·9%] of 304 in middle-income countries, and two [1·4%] of 139 in high-income countries; p≤0·0001 between all country income groups). Factors significantly associated with higher mortality for all patients combined included country income status (low-income vs high-income countries, risk ratio 2·78 [95% CI 1·88–4·11], p<0·0001; middle-income vs high-income countries, 2·11 [1·59–2·79], p<0·0001), sepsis at presentation (1·20 [1·04–1·40], p=0·016), higher American Society of Anesthesiologists (ASA) score at primary intervention (ASA 4–5 vs ASA 1–2, 1·82 [1·40–2·35], p<0·0001; ASA 3 vs ASA 1–2, 1·58, [1·30–1·92], p<0·0001]), surgical safety checklist not used (1·39 [1·02–1·90], p=0·035), and ventilation or parenteral nutrition unavailable when needed (ventilation 1·96, [1·41–2·71], p=0·0001; parenteral nutrition 1·35, [1·05–1·74], p=0·018). Administration of parenteral nutrition (0·61, [0·47–0·79], p=0·0002) and use of a peripherally inserted central catheter (0·65 [0·50–0·86], p=0·0024) or percutaneous central line (0·69 [0·48–1·00], p=0·049) were associated with lower mortality. Interpretation Unacceptable differences in mortality exist for gastrointestinal congenital anomalies between lowincome, middle-income, and high-income countries. Improving access to quality neonatal surgical care in LMICs will be vital to achieve Sustainable Development Goal 3.2 of ending preventable deaths in neonates and children younger than 5 years by 2030
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