Environmental Descriptors
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Maximal Information Coefficient and Support Vector Regression Based Nonlinear Feature Selection and QSAR Modeling on Toxicity of Alcohol Compounds to Tadpoles of Rana temporaria
Efficient evaluation of biotoxicity of organics is of vital significance to resource utilization and environmental protection. In this study, toxicity of 110 alcohol compounds to tadpoles of Rana temporaria is adopted as the dependent variable and 1388 physiochemical parameters (features) calculated by PCLIENT are used for representing each compound. A featu
J. Braz. Chem. Soc.. Publicado em: 2019-02
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2. Multi-criteria decision analysis and spatial statistic: an approach to determining human vulnerability to vector transmission of Trypanosoma cruzi
BACKGROUND Chagas disease (CD), caused by the protozoan Trypanosoma cruzi, is a neglected human disease. It is endemic to the Americas and is estimated to have an economic impact, including lost productivity and disability, of 7 billion dollars per year on average. OBJECTIVES To assess vulnerability to vector-borne transmission of T. cruzi in domiciliary
Mem. Inst. Oswaldo Cruz. Publicado em: 2017-10
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3. Fuzzy Modeling of Annoyance Caused by Aircraft Noise Using Laeqd and Laeqn Metrics
ABSTRACT: Airport noise presents a major environmental impact arising from aircrafts airport activities, being one of the most complex and difficult mitigation problems. From the environmental point of view, airports cause serious problems to the population. Annoyance caused by noise was evaluated from the Day-Night Level (DNL) metrics proposed by Schultz. H
J. Aerosp. Technol. Manag.. Publicado em: 2013-03
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4. Composition and seasonal variation of brachyura and anomura (Crustacea, Decapoda) associated with brown mussel farms at Praia da Cocanha, Brazil
The composition and seasonal variation of brachyuran and anomuran species associated with mussel farms were evaluated at Praia da Cocanha, São Paulo between May 2007 and February 2008. Nine mussel ropes were sampled at random in each quarter, and 1,208 organisms were identified, comprising five families and 28 species. The most numerous species was the porc
Brazilian Archives of Biology and Technology. Publicado em: 2012-08
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5. AVALIAÇÃO DO RUÍDO DE TRÁFEGO VEICULAR EM ÁREA CENTRAL DE CHAPECÓ SC / EVALUATION OF VEHICULAR TRAFFIC NOISE IN CENTRAL ZONE CHAPECÓ SC
The development of cities and population growth have led, among other urban problems, the increase in sound pressure levels of environmental noise. With the overcrowding of cities, the roads start to host large flows of vehicles, among other sound sources. These factors, coupled with the layout and massing of buildings, make the road a polluter responsible f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/12/2011
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6. Risk factors for falls among elderly: integrative review of literature from diagnosis of nursing NANDA / Fatores de risco para quedas em idosos: revisão integrativa da literatura a partir do diagnóstico de enfermagem da NANDA
Falls among the elderly pose a major problem in public health. Thus, the following study, founded in a project of Universal Project 2008, aimed: to analyze the scientific production regarding the risk factors for falls, in the elderly population, both in Brazilian and foreign scientific literature within the last five years. The methodology applied was the i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2011
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7. Agro-morphological characterization of upland rice accessions
The agro-morphological characterization is fundamental in order to provide information for plant breeding programs. The aim of the present study was to characterize 146 accessions of upland rice (Oryza sativa L.), based on qualitative and quantitative agro-morphological descriptors. The experiment was conducted in Recife, state of Pernambuco, Brazil, using a
Scientia Agricola. Publicado em: 2011-12
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8. Environmental heterogeneity: Anuran diversity in homogeneous environments
The northwestern region of São Paulo was extensively deforested during the agricultural expansion in the last century and only small fragments of the original vegetation cover remained. In this study, we investigated how habitat features influence the composition, richness, and diversity of anurans in environments homogenized by agricultural activities. We
Zoologia (Curitiba). Publicado em: 2011-10
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9. Estrutura da comunidade de macroinvertebrados bentônicos na bacia hidrográfica do Rio Forqueta (RS, BRASIL) em múltiplas escalas espaciais
Os macroinvertebrados bentônicos constituem uma importante comunidade em riachos, pois participam do fluxo de energia, sendo um importante recurso alimentar para níveis tróficos adjacentes e superiores. Formam uma fauna bastante diversificada e a estrutura desta comunidade pode ser influenciada por diversos fatores ambientais, os quais variam no tempo, no
Publicado em: 2011
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10. Analise da produção academica apresentada nos encontros de pesquisa em educação ambiental (EPEA) / Analysis of the academic production presented in environmental education research meetings (EPEA)
This work is characterized as State of the Art research and aims to describe and analyze the characteristics and trends of scientific production presented in four encounters Research in Environmental Education (EPEA), conducted from 2001, 2003, 2005 and 2007. The 303 complete papers were studied from the following descriptors: author of the article, the home
Publicado em: 2009
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11. As comunidades macrobentÃnicas na avaliaÃÃo da qualidade ambiental de Ãreas estuarinas de Pernambuco
Estuarine environments are known by its importance in terms of complexity and biodiversity; however, anthropogenic activities continue to have a detrimental effect on its biodiversity levels on a worldwidescale. Several studies have emphasized the role of benthic macroinvertebrates as indicators of environmental quality status in these ecosystems, which have
Publicado em: 2009
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12. Paleoecologia do sistema Pinguela-Palmital-Malvas, holoceno da Bacia de Pelotas, RS, Brasil : uma abordagem focada na utilização de diatomáceas (Bacillariophyta) como descritores paleoambientais / Paleoecology of the Pinguela-Palmital-Malvas system, holocene of the Pelotas basin, RS, Brazil an approach focused on the use of diatoms (Bacillariophyta) as environmental descriptors
Diatomáceas do Quaternário são indicadoras úteis de alterações de habitats locais desde ambientes terrestres até ambientes marinhos profundos, produzindo conhecimento a respeito de alterações do nível da coluna d'água em lagos, mudanças do nível relativo do mar e química da água. Embora extensamente utilizadas por pesquisadores europeus e nort
Publicado em: 2009