Requirements Development
Mostrando 1-12 de 814 artigos, teses e dissertações.
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1. Development of a TD-NMR Method to Monitor Brazil Nuts Oil Content: A Green and Low-Cost Based Approach
Growth in the international popularity of Brazil nuts oil (Bertholletia excelsa, Bonpl.) has demanded a closer look at quality aspects of the nuts. In this context, time-domain 1H nuclear magnetic resonance spectroscopy (TD-NMR) can be a useful tool for assessing the lipid portion of such matrices. In this work, a TD-NMR method was developed and validated to
J. Braz. Chem. Soc.. Publicado em: 2021-07
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2. Development and Validation of a Gas Chromatographic Method for the Quantification of Minor Alkaloids in Cocaine
The quantification of minor alkaloids in seized cocaine can provide information for drug profiling and law enforcement initiatives. This work presents the development and validation of an analytical method to quantitate minor alkaloids in cocaine samples using gas chromatography with flame ionization detector, after derivatization. The method was validated i
J. Braz. Chem. Soc.. Publicado em: 2021-04
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3. More is not always better: responses of the endemic plant Vellozia nanuzae to additional nutrients
ABSTRACT Soil nutrients are one of the main drivers of plant species composition and distribution, mainly due to the role they play in plant survival and reproductive success. However, the nutritional requirements of plants inhabiting their native ecosystems are still poorly known. This is the case for most species of campo rupestre vegetation, which are fou
Acta Bot. Bras.. Publicado em: 2020-09
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4. Seed germination and dormancy break in Eragrostis polytricha, a native Brazilian grass species with potential for recovery of degraded lands
ABSTRACT Ferruginous Rocky Outcrops have high levels of species richness and endemism, but have been threatened by several anthropic actions, especially mining. Eragrostis polytricha, a common grass species in the vegetation of these outcrops, has shown promising features for use in the recovery of mining areas. However, in order to fully understand the spec
Acta Bot. Bras.. Publicado em: 2020-09
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5. EVOLUÇÃO DA LEGISLAÇÃO E DAS TÉCNICAS ANALÍTICAS APLICADAS A ESTUDOS DE ESTABILIDADE DE INSUMOS E PRODUTOS FARMACÊUTICOS
Stability is an important parameter to evaluate the quality, safety and efficacy of drug substances and pharmaceutical products. The stability studies aim to determine the ability of a formulation to maintain its specifications, in order to establish shelf life and recommended storage conditions. Despite the extensive relevance, until the 1980’s the stabil
Quím. Nova. Publicado em: 20/07/2020
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6. Introducing programmable logic devices in physics laboratories: a practical guide for the implementation of experiments
Modern electronic instrumentation techniques are being introduced in the programs of the Physics and Physical Engineering courses and, in this context, the programmable logic devices play an important role. We present the fundamental steps for the design, development, and validation of systems based on programmable logic devices. Two digital filters have bee
Rev. Bras. Ensino Fís.. Publicado em: 10/01/2020
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7. Conflitos nas relações de trabalho entre professores universitários
Resumo Trata-se de estudo descritivo-interpretativo de abordagem qualitativa, realizado em universidade pública de Mato Grosso, que teve como objetivo conhecer os conflitos nas relações de trabalho entre professores universitários. O estudo ocorreu entre janeiro e abril de 2017, por meio de entrevista semiestruturada guiada por roteiro pré-testado, elab
Rev. Bioét.. Publicado em: 10/01/2020
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8. Self-care deficits in women with leg ulcers and sickle cell disease
RESUMO Objetivo: identificar os déficits de autocuidado em mulheres com úlceras de perna e doença falciforme. Método: abordagem qualitativa, descritiva, exploratória com 14 mulheres. A coleta foi realizada em dezembro de 2015 a janeiro de 2016, enquanto a análise foi sustentada pela Teoria Geral do Déficit de Autocuidado de Orem. Resultados: os req
Rev. Bras. Enferm.. Publicado em: 13/12/2019
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9. Effect of biostimulant application and long-term storage on the nutritional value of carrot
RESUMO O valor nutricional da cenoura é determinado pelo teor de açúcares totais e monossacarídeos, carotenóides e vitaminas, incluindo vitamina C, em suas raízes. Em 2009-2011, foram realizadas pesquisas de campo visando o efeito de preparações bioestimulantes, aplicadas durante o período vegetativo da cenoura, sobre os nutrientes selecionados de s
Hortic. Bras.. Publicado em: 09/12/2019
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10. Rumen-protected methionine in cattle: influences on reproduction, immune response, and productive performance
RESUMO: Atualmente, as informações e o conhecimento gerado sobre os principais ingredientes utilizados em dietas para bovinos possibilitaram maior assertividade em suas formulações. Dentre esses ingredientes, os aminoácidos se destacam como uma ferramenta promissora, capaz de levar à redução nos níveis totais de proteína bruta e ajustar as concentr
Arq. Inst. Biol.. Publicado em: 25/11/2019
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11. Changes in mineral nutrition during fruit growth and development of ‘Seike’ and ‘Newhall’ navel orange as a guide for fertilization
Resumo Mudanças nos padrões de acumulação de nutrientes minerais em diferentes estágios de desenvolvimento do fruto refletem as exigências de plantas cítricas para diferentes nutrientes, e essa informação fornece uma referência essencial para a fertilização racional. Neste estudo, mudanças no conteúdo de 11 nutrientes no fruto inteiro, na polp
Rev. Bras. Frutic.. Publicado em: 14/11/2019
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12. The Role of Terrestrial and Space Environments in Launch Vehicle Development
ABSTRACT: Natural (Terrestrial & Space) Environment (NE) phenomena play a significant role in the design and flight of aerospace vehicles and in the integrity of the associated aerospace systems and structures. Natural environmental design criteria guidelines described here are based on measurements and modeling of atmospheric and climatic phenomena relative
J. Aerosp. Technol. Manag.. Publicado em: 04/11/2019