Seasonal Pattern
Mostrando 1-12 de 216 artigos, teses e dissertações.
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1. Effect of seasons on delirium in postoperative critically ill patients: a retrospective analysis
Abstract Background and objectives Postoperative delirium is common in critically ill patients and is known to have several predisposing and precipitating factors. Seasonality affects cognitive function which has a more dysfunctional pattern during winter. We, therefore, aimed to test whether seasonal variation is associated with the occurrence of delirium
Brazilian Journal of Anesthesiology. Publicado em: 2023
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2. Interaction of Pb, Ni and Cd with Aquatic Humic Substances of Amazonian Blackwater Rivers
In this study, the extraction and characterization of aquatic humic substances (AHS) from two blackwater rivers in the Amazon basin was carried out in order to assess the seasonal effects in the AHS structure. In addition, an investigation of the complexing capacities (CC) of the structures containing the metal ions CdII, NiII and PbII was also done. The cha
J. Braz. Chem. Soc.. Publicado em: 2021-02
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3. Is the effect the same every January? Seasonality and Brazilian equity fund flows
RESUMO Partindo do pressuposto de que padrões sazonais foram identificados em ativos do mercado de ações e também no contexto de fundos de investimento, o objetivo deste artigo é investigar a relação entre a sazonalidade apresentada pelo Efeito-Janeiro e o fluxo financeiro dos fundos de ações brasileiros. O estudo expande os possíveis efeitos da sa
Rev. contab. finanç.. Publicado em: 09/12/2019
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4. Seasonal variation of clinical characteristics and prognostic of adult patients admitted to an intensive care unit
RESUMO OBJETIVO: Analisar variações sazonais dos padrões clínicos, uso de recursos terapêuticos e resultados da internação de pacientes adultos admitidos na unidade de terapia intensiva. MÉTODOS: Estudo de coorte retrospectivo realizado de janeiro de 2011 a dezembro de 2016 em pacientes adultos na unidade de terapia intensiva (UTI) de Hospital Univ
Rev. Assoc. Med. Bras.. Publicado em: 02/12/2019
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5. Salinity and stable oxygen isotope relationship in the Southwestern Atlantic: constraints to paleoclimate reconstructions
Abstract: Stable isotopes have been widely used in the literature both to discuss current ocean circulation processes, as well as to reconstitute paleoceanographic parameters. The distribution of oxygen and deuterium stable isotopes in seawater (δ18Osw and δDsw) at the Western Tropical South Atlantic border was investigated to better understand the main fr
An. Acad. Bras. Ciênc.. Publicado em: 30/09/2019
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6. The Role of Environmental Heterogeneity in the Seed Rain Pattern
ABSTRACT We focus on understanding the influence of environmental variables on ecological processes, and such a focus promotes an integrated view of forest ecological patterns. The following questions were made: Do variations in temperature, precipitation, litterfall deposition and light intensity influence the density and composition of seed rain in a stret
Floresta Ambient.. Publicado em: 29/08/2019
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7. Las Podostemaceae como hábitat para los macroinvertebrados en arroyos de Misiones (Argentina)
ABSTRACT Podostemaceae are important components of the trophic networks of rheophilic environments but their importance as habitats for invertebrates is little known. In this study, the abundance and taxa richness of macroinvertebrate assemblages associated with Podostemum distichum and Podostemum muelleri (Malpighiales: Podostemaceae) in two low order strea
Iheringia, Sér. Zool.. Publicado em: 05/08/2019
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8. Influence of environmental variables on seasonal abundance and relative growth of Macrobrachium amazonicum (Crustacea: Decapoda: Caridea): variations of a continental population
RESUMO O objetivo do presente estudo foi avaliar a influência de fatores abióticos (condutividade, oxigênio dissolvido, pH, precipitação e temperatura da água) na abundância de Macrobrachium amazonicum (Heller, 1862), bem como comparar o crescimento relativo entre as categorias demográficas ao longo das estações do ano, em uma lagoa marginal locali
Iheringia, Sér. Zool.. Publicado em: 23/05/2019
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9. Spatiotemporal ecology of two Neotropical herbivorous mammals
Abstract On this study, we used camera traps in a Semi deciduous Seasonal Forest, northeast of Brazil, to estimate the frequencies of occurrence of two Neotropical herbivorous mammals: the spotted paca (Cuniculus paca) and the tapeti (Sylvilagus brasiliensis), analyzing their seasonal variations of spatial distribution. We also characterized the activity pat
Pap. Avulsos Zool.. Publicado em: 20/05/2019
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10. Padrões espaciais de samambaias em Floresta Estacional Perenifólia na transição Amazônia-Cerrado
Resumo O clima e as condições edáficas são importantes preditores dos padrões espaciais e da diversidade alfa de espécies vegetais. A distribuição espacial das populações vegetais fornece informações sobre processos ecológicos que regem as comunidades. Nesse estudo investigamos a riqueza e os padrões espaciais intra e interespecíficos de espé
Rodriguésia. Publicado em: 25/04/2019
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11. Seasonal dynamics of vegetation indices as a criterion for grouping grassland typologies
ABSTRACT: This study aimed to characterize the average seasonal pattern of the vegetation in southern grassland in Brazil, and the variability found in the time series of vegetation indices. It also sought to identify similarities in the seasonal pattern of different grassland typologies. Moderate Resolution Imaging Spectroradiometer (MODIS), Normalized Diff
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-02
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12. Fish metacommunity structure in Caño Maraca, an important nursery habitat in the Western Llanos of Venezuela
ABSTRACT We investigated spatial and seasonal variation of fish assemblages of Caño Maraca, a creek in Venezuela’s Western Llanos, a region with strong wet-dry seasonality. Fishes were surveyed over a 19-year period at three sites along the longitudinal gradient: a headwater site with a narrow channel, a middle site with shallow channels traversing a seas
Neotrop. ichthyol.. Publicado em: 06/12/2018