Cumulative Process
Mostrando 1-12 de 103 artigos, teses e dissertações.
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1. Feedstock and inoculum characteristics and process parameters as predictors for methane yield in mesophilic solid-state anaerobic digestion
Abstract: In this study, several linear regression models were tested to predict the cumulative 30-day methane yield produced in mesophilic solid-state anaerobic digestion, employing diverse lignocellulosic biomass sources. Data collected from 13 studies were utilized, totalizing 86 experimental points, divided into regression and validation. Models containi
An. Acad. Bras. Ciênc.. Publicado em: 28/11/2019
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2. AVALIAÇÃO DO PERFIL DE LIBERAÇÃO DO FÁRMACO IBUPROFENO EM MEMBRANAS SIMÉTRICAS E ASSIMÉTRICAS DE ACETATO DE CELULOSE: EFEITO DA MORFOLOGIA
Cellulose derivatives still receive special attention in today biomedical applications due to their biocompatibility, ability to form resistant membranes and compatibility with various bioactive agents. In this work, cellulose acetate (CA) was used to prepare membranes with different morphologies aiming to evaluate the release profile of the drug ibuprofen (
Quím. Nova. Publicado em: 21/10/2019
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3. Assessing Water Erosion Processes in Degraded Area Using Unmanned Aerial Vehicle Imagery
ABSTRACT The use of Unmanned Aerial Vehicles (UAVs) and Structure from Motion (SfM) techniques can contribute to increase the accessibility, accuracy, and resolution of Digital Elevation Models (DEMs) used for soil erosion monitoring. This study aimed to evaluate the use of four DEMs obtained over a year to monitor erosion processes in an erosion-degraded ar
Rev. Bras. Ciênc. Solo. Publicado em: 14/10/2019
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4. Weibull distribution and dynamics of germination of Rangpur lime seeds at different temperatures
Resumo: O limão-cravo é o porta-enxerto mais utilizado no Brasil e sua propagação ocorre por meio de sementes. Atualmente nas prescrições das Regras de Análise de Sementes não há metodologia descrita para realização do teste de germinação de limão-cravo. Dessa forma, o objetivo foi estudar a dinâmica da germinação em sementes de limão-cravo
J. Seed Sci.. Publicado em: 09/09/2019
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5. Envolvimento da pessoa com doença renal crônica em seus cuidados: revisão integrativa
Resumo A doença renal crônica (DRC) acarreta ao indivíduo uma sobrecarga de cuidados indispensáveis ao alcance das metas terapêuticas e qualidade de vida. O controle nutricional, o regime medicamentoso e as terapias de substituição renal são exemplos que requerem participação ativa. Assim, foi realizada revisão integrativa de artigos científicos
Ciênc. saúde coletiva. Publicado em: 30/05/2019
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6. Failure behavior monitoring and evaluation of steel-confined reinforced concrete columns by acoustic emission under quasi-static loading
Abstract The mechanical behavior and failure evolution of steel-confined and unconfined reinforced concrete (RC) columns are investigated under quasi-static loading through acoustic emission (AE) signal. The excellent hysteresis response, lighter damage characteristics and delayed catastrophe of steel-confined RC columns are verified. Characteristic AE param
Lat. Am. j. solids struct.. Publicado em: 01/11/2018
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7. Fatigue lifespan of a fillet welded joint - Hybrid approach to obtain the S-N curve with a reduced number of tests
Abstract This paper introduces a hybrid approach for obtaining S-N curves with reduced number of tests associated to statistically simulated data. In order to validate the proposal, two validation process were developed. One using a methodology to generate S-N curves based on Monte Carlo simulations and other using actual data according Zhao et al. (1998), a
Lat. Am. j. solids struct.. Publicado em: 18/10/2018
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8. BIOGAS PRODUCTION FROM DAIRY CATTLE MANURE, UNDER ORGANIC AND CONVENTIONAL PRODUCTION SYSTEMS
ABSTRACT The purpose of this study was to evaluate the production of biogas, as well as the biogas production potential resulting from the anaerobic biodigestion of dairy cattle manure under organic (CMOS) and conventional (CMCS) production system. Also, the concentration of thermotolerant coliforms was evaluated after the biodigestion process. Therefore, be
Eng. Agríc.. Publicado em: 2017-12
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9. Simultaneous Determination of Nonylphenol and Nonylphenol Ethoxylates in Wastewater Samples from Biodegradation Process by High Performance Liquid Chromatography Method
The degradation products of nonylphenol ethoxylates (NPnEO), nonylphenol (NP) and short-chain NPnEO are representative of environmental endocrine disruptors. They possess strong lipophilicity, toxicity, cumulative property and estrogenic effect. They can pollute the environment, cause body precocious, and induce the body's estrogen-sensitive cancer cell prol
J. Braz. Chem. Soc.. Publicado em: 2017-12
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10. Organic Carbon and Physical Properties in Sandy Soil after Conversion from Degraded Pasture to Eucalyptus in the Brazilian Cerrado
ABSTRACT Soil is currently seen as the most relevant carbon sink and the most effective carbon stabilizer. In contrast, agriculture is the second largest C emitter, after burning of fossil fuels. This organic carbon (OC) introduced into the soil, mainly via organic matter (OM), is essential for several soil properties and plays an extremely important role in
Rev. Bras. Ciênc. Solo. Publicado em: 22/06/2017
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11. Simplified recovery process of Ralstonia solanacearum-synthesized polyhydroxyalkanoates via chemical extraction complemented by liquid-liquid phase separation
Poly (3-hydroxybutyrate) (P(3HB)) is the most studied thermoplastic biopolymer belonging to the polyhydroxyalkanoate (PHA) family, the main features of which include rapid biodegradability and biocompatibility. The bioplastic recovery process is an important step during production and can directly influence the characteristics of PHAs. However, more efficien
Quím. Nova. Publicado em: 2017-02
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12. Acoustic Emission Analysis of Cement Mortar Specimens During Three Point Bending Tests
Abstract This work discusses the experimental results of Acoustic Emission (AE) recordings during repetitive loading/unloading loops of cement mortar beams subjected to three point bending. Six repetitive loading cycles were conducted at a gradually higher load level until the failure of the specimens. The experimental results clearly show the existence and
Lat. Am. j. solids struct.. Publicado em: 2016-12