Publicações - ciências exatas e da terra
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KLEIN HENDGES, ANA PAULA P.;
Beatriz Helena Lameiro Noronha Sales Maia;
DOS SANTOS, ELAINE FERNANDA;
TEIXEIRA, SIRLEI D.;
SANTANA, FRANCIELLI S.;
TREZZI, MICHELANGELO M.;
BATISTA, ANDREA N. L.;
BATISTA, JOÃO M.;
DE LIMA, VANDERLEI A.;
DE ASSIS MARQUES, FRANCISCO
Palavra-chave:
alelopatia;
diterpenos;
Eragrostis plana
Áreas do conhecimento:
Ciências Exatas e da Terra; Química; Química Orgânica; Química dos Produtos Naturais
resumo ...
Five new neocassane-like diterpenes (1–5) were isolated from the roots of Eragrostis plana. Their structures were elucidated by spectroscopic data, and the absolute configurations of the representa...
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PINTO-ZEVALLOS, DELIA M.;
Camila Borges da Cruz Martins;
ANDRADE, SAMARA M. M.;
ZAWADNEAK, MARIA A.;
Paulo Henrique Gorgatti Zarbin
Palavra-chave:
ecologia química;
interações tritróficas
Áreas do conhecimento:
Ciências Exatas e da Terra; Química; Química Orgânica; Evolução, Sistemática e Ecologia Química
resumo ...
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Francisco Jablinski Castelhano;
Francisco de Assis Mendonça
Palavra-chave:
Clima Urbano;
poluição atmosférica;
região metropolitana de curitiba
Áreas do conhecimento:
Ciências Exatas e da Terra; Geografia Física; Climatologia Geográfica
resumo ...
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DE SOUZA, MIHAEL MACHADO;
MATHIS, MORITZ;
MAYER, BERNHARD;
Mauricio Almeida Noernberg;
POHLMANN, THOMAS
Palavra-chave:
Corrente do Brasil;
Transporte de Ekman;
Vorticidade Potencial;
HAMSOM;
RCP8.5
Áreas do conhecimento:
Ciências Exatas e da Terra; Oceanografia Física;
Ciências Exatas e da Terra; Oceanografia; Oceanografia Física; Movimento da Água do Mar
resumo ...
Anthropogenic climate change is expected to strengthen upwelling events worldwide, driven by an increase of upwelling-favorable winds. However, Earth System Models (ESM) tend to underestimate regional processes due to their coarse grid resolution, which can lead to local biases. We use a high-resolution ocean model ( $${1/12}^{\circ }$$ ) forced by results from the Max-Planck-Institute-ESM to analyze the impact of the RCP8.5 emission scenario on the upwelling of South Atlantic Central Water (SACW) in the South Brazil Bight (SBB). We find a stronger Ekman forcing and a higher spread of SACW over the shelf, but this does not translate into higher vertical velocities at the bottom of the mixed-layer in the end of the century. The increased winds’ effect is essentially balanced by an increase in water column stability due to the surface warming. This is particularly important during austral summer, when this process tends to weaken the upwelling. Vertical velocities decrease significantly along the shelf break. Here, the upwelling regime is governed by the Brazil Current (BC) and slight changes in transport induce large responses in upwelling strength. The consequences are increased sea surface temperatures over most of the shelf, although mitigated by the SACW upwelling and kept below global projections. However, temperatures decrease along Cabo Frio. In this region, shelf break upwelling dominates and is enhanced by a local increase in the BC transport. This highlights the importance of regional processes and, more specifically, of changes in the BC transport for the upwelling in the SBB.
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ÁVILA, LEANDRO;
Miriam Rita Moro Mine;
KAVISKI, ELOY
Palavra-chave:
Operação de reservatórios;
funções cópula;
otimização estocástica
Áreas do conhecimento:
Engenharias; Engenharia Hidráulica; Hidrologia;
Ciências Exatas e da Terra; Probabilidade e Estatística; Econometric and Statistical Methods and Methodology
resumo ...
This paper explores and combines implicit stochastic optimization (ISO) with copula functions to simulate long-term operating policies for a hydropower reservoir located in the Northeastern region of Brazil. Overall, ISO is considered as one of the most reliable techniques to derive long-term reservoir operating rules for reservoirs. This method employs a deterministic optimization model to estimate the optimal reservoir allocations under different inflow scenarios and later constructs operating rules for each month by relating the ensemble of the optimal releases, the initial storage volume and future inflow values. Those rules are generally established by fitting approaches including linear regression or nonlinear methods. This work illustrates the applicability to combine copulas with ISO to define reservoir operation policies based on a probabilistic procedure. Firstly, synthetic streamflow scenarios are simulated using a periodic vine copula model. Afterward, optimal release data are estimated by ISO for a set of inflow scenarios. Joint probability distribution functions based on copulas are constructed in order to forecast the expected release, conditioned to the initial reservoir volume and future inflows data. Results indicate that the proposed model represents a flexible approach to construct operating rules and derive long-term reservoir operating policies with low variability, allowing to reproduce different dependence structures of simulated data.
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DA SILVA VEIGA, PAULO APOLINÁRIO;
SCHULTZ, JULIANA;
MATOS, TASSYA THAIZA DA SILVA;
FORNARI, MAYARA REGINA;
COSTA, THIAGO GUIMARÃES;
MEURER, LINO;
Antonio Savio Mangrich
Palavra-chave:
Elefant grass;
Grafite-like;
Amorfous carbon;
Organic dye;
Continous flow absorption
resumo ...
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KOCHEPKA, DÉBORA M.;
DILL, LAÍS P.;
OLIVEIRA, ANGELO R. S.;
CÉSAR-OLIVEIRA, MARIA APARECIDA F.;
Claudiney Soares Cordeiro
Palavra-chave:
glycerol;
Glyceryl monoalkyl ether;
Long-chain alkyl ether
Áreas do conhecimento:
Ciências Exatas e da Terra; Química Orgânica; Síntese Orgânica
resumo ...
In this study, the etherification of glycerol was executed with dodecanol through use of homogeneous catalysts. First, a univariate study of direct condensation was executed to determine the effects of the variables reaction time, catalyst type and glycerol:dodecanol molar ratio on the dodecyl ether (DOE) and glyceryl monododecyl ether (GMDE) production. A full 23 factorial design was used to evaluate the effect of glycerol:dodecanol molar ratio, catalyst loading and temperature on the production of dodecyl ether (DOE), glyceryl monododecyl ether (GMDE) substituted on carbon 1 (C1) or carbon 2 (C2). The GMDE yield was 35% in 3 h. The experimental results indicated that rising temperature positively affected GMDE content and higher catalyst loading increased DOE production. In the case of traditional routes, Williamson synthesis produced just 5% GMDE while when applying solketal synthesis, high yield and purity of this compound were obtained, demonstrating the viability of GMDE production.
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OLIVEIRA, ANNE CAROLINE DEFRANCESCHI;
Gustavo Frensch;
Francisco de Assis Marques;
VARGAS, JOSÉ VIRIATO COELHO;
RODRIGUES, MARIA LUIZA FERNANDES;
MARIANO, ANDRÉ BELLIN
Palavra-chave:
fermented solid;
lipases;
Conditions optimization;
Enzymatic esterefication;
Enzymatic reuse;
High conversation rate
Áreas do conhecimento:
Ciências Exatas e da Terra; Química Orgânica; Síntese Orgânica
resumo ...
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Ronaldo Ferreira Maganhotto;
Luiz Claúdio de Paula Souza;
Jairo Calderari de Oliveira Junior;
Lohmann, Marciel
Palavra-chave:
Índices de Representação da Paisagem;
Modelo Numérico do Terreno;
terrain attributes
resumo ...
(pt)
O consumo dos recursos naturais trouxe à tona questionamentos sobre o que pode ser feito para evitar prejuízos cada vez maiores à natureza. Sendo assim, as Unidades de Conservação (UCs) passam a exercer papel primordial no processo de proteção ambiental. Soma-se a isso o plano de manejo, instrumento que estabelece o zoneamento da UC e as normas que devem presidir o uso da área. Nesse contexto, este trabalho objetivou propor o zoneamento ambiental da REBIO das Araucárias a partir do processamento de atributos topográficos e das suas correlações com o uso do solo. Para tanto, foram gerados diversos atributos topográficos derivados do Modelo Digital do Terreno (MDT). Como resultados, verificou-se que a utilização dos atributos topográficos possibilitou o entendimento das informações pedológicas e de limitação de uso (susceptibilidade ambiental). Logo, para o zoneamento, realizou-se tabulação cruzada entre a Limitação de Uso e o Uso do Solo, sendo delineadas as Zonas de Manejo da unidade. Environmental zoning proposal for the Araucária Biological Reserve based on topographic attributes A B S T R A C T The consumption of natural resources has raised questions about what can be done to avoid increasing damage to nature. Thus, Conservation Units (PAs) play a major role in the process of environmental protection. Add to this the management plan, an instrument that establishes the zoning of the CU and the norms that should govern the use of the area. In this context, this work aimed to propose the environmental zoning of REBIO das Araucárias from the processing of topographic attributes and their correlations with land use. For this, several topographic attributes derived from the Digital Terrain Model (DTM) were generated. As results, it was verified that the use of the topographic attributes made possible the understanding of the pedological information and of limitation of use (environmental susceptibility). Therefore, for the zoning, a cross-tabulation was performed between the Use Limitation and the Land Use, and the Management Areas of the unit were delineated. Keywords: Geotechnology; Topographic Attributes; Protected Áreas.
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Otacilio Lopes de Souza da Paz;
Maíra Oneda Dal Pai;
Eduardo Vedor de Paula
Palavra-chave:
banco de dados;
Unidades de Conservação;
geoprocessamento
Áreas do conhecimento:
Ciências Exatas e da Terra; Geociências; Geografia Física; Geocartografia
resumo ...
(pt)
As Bases de Dados Geoespaciais (BDG) apresentam grande importância na elaboração de estudos ambientais, principalmente em diagnósticos que subsidiem planos de manejo, planos diretores, entre outros instrumentos de planejamento. Estudos que abordam procedimentos para construção de BDG são incipientes. Por meio de uma cooperação técnica entre o departamento de Geografia da Universidade Federal do Paraná e o Instituto Chico Mendes da Conservação da Biodiversidade, desenvolve-se desde 2014 uma metodologia para elaboração de BDG, a partir de experiências na produção do diagnóstico ambiental da Área de Proteção Ambiental (APA) de Guaraqueçaba e de outras Unidades de Conservação (UCs) do litoral norte do Paraná. Assim, o presente trabalho tem como objetivo apresentar a proposta metodológica desenvolvida para a criação de BDG, que se divide em 4 etapas: avaliação, organização, qualidade e aplicação. Como principais resultados destacam-se: 282 dados geoespaciais em 51 categorias temáticas, revisão dos limites da APA de Guaraqueçaba e 52 produtos cartográficos para compor o diagnóstico ambiental. A proposta ganha destaque por apresentar recomendações para armazenamento e nomenclatura dos dados, regras para controle de qualidade (consistência temática, topológica e metadados) e sua divulgação em plataformas livres da Internet. Ainda, são propostas recomendações de aplicação dos dados na gestão do território, bem como protocolos para alimentação da BDG. Methodological proposal for elaboration of geospatial database as a subsidy for environmental researches: application in conservation units in the north coast of Paraná A B S T R A C T Geospatial Databases (BDG) features great importance at the elaboration of environmental studies, primarily at diagnostics that subsidize management plans, urban master plans and more. Still, studies that address the procedures of building a BDG are incipient. Through a technical co-operation between department of Geography from Federal University of Paraná and Chico Mendes Institute for Biodiversity Conservation, since 2014 a BDG building methodology based on experiences in environmental diagnosis at the Environmental Protection Area (APA) of Guaraqueçaba and other Conservation Units (UCs) from the north coast of Paraná. Thus, the present work aims to propose a methodology of BDG creation, which is divided in 4 steps: evaluation, organization, quality and application. Between the main results there are: 282 geospatial data in 51 thematic categories, the APA of Guaraqueçaba’s limits revised, and 52 cartographic products that will be featured in the environmental diagnosis. This proposal stands out by bringing data storage and naming recommendations, rules for quality control (thematic consistency, topology and metadata), and also its publication on free online platforms. Yet, there are some recommendations for the application of this data in territory management, such as protocols for BDG feeding. Keywords: Geotechnology, Geospatial Data, Information Quality, Environmental diagnosis.
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