Analytical Automation
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. LOW COST ANALYZER FOR THE DETERMINATION OF PHOSPHORUS BASED ON OPEN-SOURCE HARDWARE AND PULSED FLOWS
The need for automated analyzers for industrial and environmental samples has triggered the research for new and cost-effective strategies of automation and control of analytical systems. The widespread availability of open-source hardware together with novel analytical methods based on pulsed flows have opened the possibility of implementing standalone auto
Quím. Nova. Publicado em: 2016-04
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2. Uso da RMN como um sensor online em processos industriais
Nuclear magnetic resonance (NMR) is one of the most versatile analytical techniques for chemical, biochemical and medical applications. Despite this great success, NMR is seldom used as a tool in industrial applications. The first application of NMR in flowing samples was published in 1951. However, only in the last ten years Flow NMR has gained momentum and
Quím. Nova. Publicado em: 2012
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3. Desenvolvimento de um Sistema em Fuxos Automatizado para Determinação de Metais-traço em Matrizes Aquosas Cádmio como metal teste / Development of a Automatic Flow System for Determination of trace metal in aqueous Matrices Cadmium as a metal test
Este trabalho apresenta a proposta de um sistema em fluxos automatizado para enriquecimento de amostras aquosas baseado na extração sólido-líquido. Duas bombas de seringa, impulsionam soluções de amostra, agente complexante (verde de bromocresol 0,01% m/v) e eluente (etanol 95 % v/v) através do sistema de fluxos, contendo basicamente seis válvulas so
Publicado em: 2011
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4. A análise por injeção sequencial (SIA): vinte anos em uma perspectiva brasileira
The year of 2010 marks the 20th anniversary of the development of Sequential Injection Analysis (SIA) by Ruzicka and Marshall. Considered the second generation of the flow injection methods, this article briefly describes the history, the basic principles of the technique and reviews all papers developed by Brazilian scientists aiming the divulgation of this
Química Nova. Publicado em: 2010
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5. Adsorption of di-2-pyridylketone salicyloylhydrazone (DPKSH) on resin IRA 402: use in spectrophotometric determination of Cu(II) ions by FIA after separation and pre-concentration in solid phase / Adsorção da di-2-piridil cetona saliciloilhidrazona (DPKSH) em resina ira 402: aplicação na determinação espectrofotométrica de íons Cu(ii) por análise por injeção em fluxo (FIA) após separação e pré-concentração em fase sólida
Pre-concentration in solid phase provides advantages such as simplicity, automation easiness, improvement in detection limits, possibilities to combine it with Flow Injection Analysis (FIA), integration of reaction and retention phases, lower consumption of reagents and increase in selectivity. This process requires the development and characterization of ne
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/09/2009
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6. The competence accumulation process in the technology transference strategy
The present article evaluates and measures the technological competence accumulation in an automation area enterprise to distribution centers, Knapp Sudamérica Logistic and Automation Ltd, in the interval of the technology transference process previous period (1998-2001) and during the technology transference process (2002-2005). Therefore, based on an indi
BAR - Brazilian Administration Review. Publicado em: 2008-06
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7. TÉCNICO VS. USUÁRIO: UMA ANÁLISE DO PROCESSO COMUNICACIONAL NA ENGENHARIA DE REQUISITOS DE SOFTWARE
This research analyzes a practical and a communicational problem associated to software development which takes place before the program begins to be created: the software industry professionals say that the user does not know what he wants, due to frequent change requests associated to the software requirements that originate volatile requirements. This wor
Publicado em: 2008
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8. Avaliação de coeficientes de rendimento e modelagem do processo fermentativo de produção de etanol
The yield ethanol (hP) is one of the most important parameters to be evaluated in the industrial process of alcohol fermentation. Because most plants neither present a reasonable level of automation, nor perform frequent analytical measures during the batch, the hP is currently calculated by methodology based on by-products formed in the process. Such calcul
Publicado em: 2008
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9. Três posições sobre arquitetura inteligente no contexto sustentável
The general aim of this project is to expose the project manners in Intelligent Architecture using technology innovation that can decrease the environment impact caused by human beings habit. The analytical context is focused on social systemic studies, technology innovation, and automation system. The concept of Intelligent Building shows how the automation
Publicado em: 2007
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10. Modelagem ambiental de uma casa de vegetação utilizando rede de osciladores de Van Der Pol. / Greenhouse environmental modeling using Van Der Pol oscillator network.
Agricultural automation is an important area in the development of Brazilian production in recent years. Often, measurement and control of the internal conditions of greenhouses are not easy to implement at a reasonable cost. Researches in this area look for models using computational theory, foreseeing the behavior of internal variables of a greenhouse from
Publicado em: 2007
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11. Output-only structural identification of random vibrating systems
A new form to carry out stochastic identification of structures in operational conditions using a non recursive method, the statistic analysis and the wavelet transform, is presented. The statistic analysis contributed to select the best system order and to automation of computational procedures. In general the identification of low frequencies is a difficul
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-03
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12. "Analysis of pharmaceutical compounds in biological fluids using on-line SPME-LC/MS" / "Análise de fármacos em fluidos biológicos empregando o acoplamento SPME-LC/MS"
Conventional methods used for the determination of drugs in biological fluids are based on chromatographic and immunochemical techniques. The biological samples treatment - which includes extraction, pre-concentration and clean up steps has been required in drugs analysis in order to increase both analytical sensitivity and selectivity. Nevertheless, late
Publicado em: 2006