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Mostrando 1-12 de 2773 artigos, teses e dissertações.
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1. Catalysts Derived from Thermal Treatments of Hydrocalumite-Type Compounds: Synthesis and Application in Transesterification Reactions
Catalyst performance is a relevant factor in biodiesel production because it can affect the efficiency of the process. This work provides a study of the performance of heterogeneous catalysts for biodiesel production derived from thermal-treated hydrocalumite-type compounds. This work aimed to synthesize and characterize hydrocalumite-type compounds intercal
Journal of the Brazilian Chemical Society. Publicado em: 2023
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2. Perfil cientométrico da Quimiometria no Brasil
The interest of researchers in understanding the stage of development of specific areas of knowledge is a way to understand their scientific maturity and their capacity for consolidation. This “popularization” of the knowledge of researchers working in a specific area of knowledge also allows a greater ability to recognize where science is produced and w
Química Nova. Publicado em: 2022
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3. Responsive architecture: a bibliometric analysis of scientific production
Resumo Arquitetura responsiva está associada à integração entre interpretação de dados do ambiente e uma resposta adaptativa da edificação. A importância do envelope de edificações como elemento responsivo é um dos temas mais investigados na área da arquitetura. Esta revisão de literatura e análise bibliométrca considerou tipo, quantidade, an
Ambiente Construído. Publicado em: 2022
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4. Linear relationships between biometric variables in lettuce seedlings
ABSTRACT Seedling production is an important step in growing vegetables. The study of relationships between variables has applications in practically all areas of study and is useful in identifying relationships among quality variables in vegetable seedlings. Thus, this work aims to estimate linear relationships between biometric variables in lettuce seedlin
Revista Ceres. Publicado em: 2022
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5. Direct onion sowing under soil tillage methods
ABSTRACT Onion production is conditioned to the adopted techniques during the cultivation. Sowing depth, soil preparation and cultivars are determinant factors for productivity to be increased. Two experiments were developed, the first with the objective of evaluating the effect of sowing depths and soil preparation methods on the germination and development
Revista Ceres. Publicado em: 2022
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6. The Influence of the Platinum Weight Percentage in the Catalyst Formulation on the Performance of a High Temperature Ethanol Electroreformer Based on H3PO4 Doped Polybenzimidazole for Green Hydrogen Production
A vapor-fed high temperature proton exchange ethanol electroreformer has been developed based on the use of a H3PO4-doped polybenzimidazole membrane to produce green hydrogen. As a key parameter, this article describes the influence of platinum weight percent (wt.%) in the catalyst formulation from different commercial catalysts (20, 40, 60, 80 wt.% Pt/C and
Journal of the Brazilian Chemical Society. Publicado em: 2022
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7. Performance of potato cultivars grown in the organic production system
RESUMO Neste trabalho, avaliou-se o desempenho das cultivares de batata em sistema orgânico de produção, visando identificar aquelas com maior potencial produtivo e menos danificadas por Phytophthora infestans e Diabrotica speciosa. O experimento foi conduzido durante as safras de 2013/2014 e 2014/2015. Avaliou-se as cultivares Ágata, Aracy Ruiva, Vitór
Horticultura Brasileira. Publicado em: 2022
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8. Iron Cobaltite (FeCo2O4) Nanocatalysts for Water-Oxidation: Effects of Annealing Temperature on Catalytic Properties
The development of efficient, stable, and non-precious metal water oxidation catalysts (WOCs) is a matter of importance for sustainable energy research. In this work, iron cobaltite (FeCo2O4) nanoparticles were prepared by the coprecipitation method, and we present the effect of heat treatment (250, 350, 450, 650 and 900 °C) on the catalytic properties. Cat
Journal of the Brazilian Chemical Society. Publicado em: 2022
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9. Population structure, diametric distribution and use of Commiphora leptopholoeos (Mart.) JB Gillett in arboreal Caatinga
ABSTRACT The objective of this work was to characterize the population structure, analyze the spatial distribution pattern and identify the potential use of the Commiphora leptopholoeos in the Contendas do Sincorá National Forest, BA. Thus, three disjoint transects of 40 x 160 m were installed for the phytosociological study and spatial distribution and sub
Revista Ceres. Publicado em: 2022
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10. Analysis of the economic viability of organic production system of ornamental pineapple plants for cut stems
Resumo O crescimento da floricultura brasileira é notável e é percebido tanto no número de produtores, quanto na área cultivada. Visando a reduzir os custos e agregar valor, a produção de abacaxizeiros ornamentais com produção orgânica pode ser uma opção direcionada a mercados consumidores. O trabalho foi conduzido na Fundação José Carvalho, E
Ornamental Horticulture. Publicado em: 2022
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11. Ornamental cauliflower production using growth regulator
RESUMO Algumas hortaliças vêm sendo utilizadas como uma inovação no mercado de plantas ornamentais, dentre elas a couve-flor, com características morfológicas bem definidas. Neste estudo objetivou-se avaliar o efeito do paclobutrazol, aplicado via solo, na produção da couve-flor para fim ornamental. O delineamento utilizado foi inteiramente casualiza
Horticultura Brasileira. Publicado em: 2022
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12. Urban production of kale (Brassica oleracea var. acephala) in Brazil: survey of diseases and factors that contribute to their outbreak
RESUMO A couve (Brassica oleracea var. acephala) é geralmente produzida por agricultores urbanos no Brasil, mas existem poucos estudos sobre a diversidade e manejo das doenças para produção sustentável em cultivos urbanos. Neste estudo, foi verificada a ocorrência de doenças na couve em cultivos urbanos de duas regiões do Brasil, representando as con
Summa Phytopathologica. Publicado em: 2022