Streams
Mostrando 1-12 de 578 artigos, teses e dissertações.
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1. Exergy and emergy: complementary tools for assessing the environmental sustainability use of biosolids generated in wastewater-treatment plant for energy-production
Taking advantage of the energy contained in the biosolids generated in a wastewater treatment plant (WWTP) is one of the processes of greatest interest due to the opportunity to obtain an energy resources from a waste. The aim of this research was to analyze the environmental sustainability use of biosolids generated in a wastewater-treatment plant for energ
Química Nova. Publicado em: 2022
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2. Performance analysis of the beneficiation process of bauxite from the Juruti Mine. Industrial sampling and performance evaluation
Abstract Sampling campaigns were conducted at the industrial bauxite wash circuit of the Juruti Bauxite Mine in Pará, Brazil. The beneficiation circuit consisted of crushing, scrubber washing, wet screening, hydrocyclone classification, and fltration. Considering laboratory processing of samples and statistical analyses of historical operation databases, ma
REM - International Engineering Journal. Publicado em: 2022
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3. First occurrence of Filinia longiseta (Ehrenberg, 1834) from low-orders streams in a protected area at Cerrado-Amazon boundary, central Brazil
Resumo O objetivo do estudo apresentado é caracterizar o perfil de resistência e virulência de enterococos isolados de viveiros escavados e tanques de alvenaria (6 amostras) de uma pisicultura no Sul do Brasil. As amostras foram cultivadas em meio seletivo, 10 colônias foram selecionadas aleatoriamente de cada amostra, que foram identificadas por MALDI-T
Braz. J. Biol.. Publicado em: 2021-12
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4. Production of paste from fine tailings streams in a laboratory scale column thickener
Abstract The final disposal of tailings in the form of paste is a technological alternative. The objective of the present study is to obtain knowledge and compare different operational conditions that are favorable to the production of paste with the fine tailings generated after final desliming stage, obtained from the processing of metallic and non-metalli
REM, Int. Eng. J.. Publicado em: 2021-01
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5. PADRONIZAÇÃO DA QUANTIFICAÇÃO DE GLUTATIONA REDUTASE EM Aegla singularis (ANOMURA, CRUSTACEA) UTILIZANDO PLANEJAMENTO EXPERIMENTAL DCCR
Glutathione Reductase (GR) plays a key role in the maintenance of GSH homeostasis, variations in its activity may indicate damage from environmental contaminants. Experimental planning is a strategy to reduces time and cost in enzymatic assays. In this work, DCCR experimental planning was used to standardize and to validate the measure of GR in Aegla singula
Quím. Nova. Publicado em: 2020-05
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6. INFLUENCE OF DIFFERENT TEMPERATURES AND AIRFLOWS ON DRYING OF NATURAL AND PULPED COFFEE
ABSTRACT This study aimed to evaluate drying kinetics for natural and pulped coffee, using different temperatures and drying airflows. For the conduction of the experiment, coffee fruits (Coffea arabica L. cv. Topázio) were harvested manually, selecting only ripe fruits and subsequent to the hydraulic separation. For drying the coffee, use a mechanical drye
Eng. Agríc.. Publicado em: 2020-04
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7. Use of Arduino in the Development of a New and Fast Automated Online Preconcentration System Based on Double-Knotted Reactor for the Mn Determination in Tea Samples by Flame Atomic Absorption Spectrometry (F AAS)
In the present paper, an automated online preconcentration system based on the use of two knotted reactors (KR) was developed for Mn determination in tea samples by flame atomic absorption spectrometry (F AAS). The system automation was performed by using four solenoid valves to switch sample streams and reagents. Valves were driven electronically by an inte
J. Braz. Chem. Soc.. Publicado em: 2020-01
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8. Percepção e paisagem no cotidiano de escolas inseridas em paisagens rurais e urbanas
Resumo: O estudo identificou a percepção sobre meio ambiente de alunos de quatro escolas localizadas em paisagens culturais, rurais e urbanas. Na percepção dos alunos, identificada por meio de mapas mentais, há predomínio significativo de elementos naturais, bióticos e abióticos, indicando que possuem uma percepção naturalista sobre meio ambiente.
Ciênc. educ. (Bauru). Publicado em: 20/12/2019
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9. Network analysis: emergence, criticism and recent trends
Abstract Purpose Network analysis is a well consolidated research area in several disciplines. Within management and organizational studies, network scholars consolidated a set of research practices that allowed ease of data collection, high inter case comparability, establishment of nomological laws and commitment to social capital motivation. This paper a
RAUSP Manag. J.. Publicado em: 13/12/2019
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10. Fishes community composition and patterns of species distribution in Neotropical streams
Resumo: A ictiofauna de riachos na região Neotropical ainda não é totalmente conhecida. Este estudo objetiva investigar a composição da ictiofauna de seis riachos da sub-bacia do rio Ijuí, estado do Rio Grande do Sul, inseridos na bacia do rio Uruguai, de forma a contribuir no conhecimento da riqueza e distribuição de espécies de peixes no sul do Br
Biota Neotrop.. Publicado em: 09/12/2019
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11. A new inventory for fishes of headwater streams from the rio das Cinzas and rio Itararé basins, rio Paranapanema system, Paraná, Brazil
Resumo: As bacias do rio das Cinzas e do rio Itararé são afluentes importantes do rio Paranapanema, um dos principais afluentes da margem esquerda do alto rio Paraná. Os trechos superiores de ambas as drenagens interceptam a porção norte da Área de Proteção Ambiental (APA) da Escarpa Devoniana, uma área considerada crucial para a preservação da bi
Biota Neotrop.. Publicado em: 09/12/2019
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12. QUADRATURE ALGORITHMS FOR PHASE EQUILIBRIUM OF CONTINUOUS MIXTURES
Abstract Several methods for computing the Gauss-Christoffel quadrature used for the adaptive characterization of continuous mixtures were compared as to their efficiency and robustness. Two mixtures with molar fraction distribution given by truncated gamma distributions were used. We analyzed the Product-Difference, the Golub-Welsch, the Long Quotient-Modif
Braz. J. Chem. Eng.. Publicado em: 09/12/2019