Analytical Instrumentation
Mostrando 1-12 de 34 artigos, teses e dissertações.
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1. Systemic treatment and surgery versus systemic treatment alone for metastatic breast cancer
This study shows the development and application of an analytical method for the determination of bisphenol A (BPA) in aqueous samples such as tap, river and mineral water and plastic leachates, based on an extensive literature search to understand the gaps for the determination of BPA in aqueous samples. We found that most of the methods in the literature e
Rev. Assoc. Med. Bras.. Publicado em: 2020-08
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2. A Simple and Effective Liquid-Liquid-Liquid Microextraction Method with Ultraviolet Spectrophotometric Detection for the Determination of Bisphenol A in Aqueous Matrices and Plastic Leachates
This study shows the development and application of an analytical method for the determination of bisphenol A (BPA) in aqueous samples such as tap, river and mineral water and plastic leachates, based on an extensive literature search to understand the gaps for the determination of BPA in aqueous samples. We found that most of the methods in the literature e
J. Braz. Chem. Soc.. Publicado em: 2020-08
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3. LASER INDUCED-BREAKDOWN SPECTROSCOPY (LIBS): HISTÓRICO, FUNDAMENTOS, APLICAÇÕES E POTENCIALIDADES
This review attempts to present a broad view of the technique laser-induced breakdown spectroscopy (LIBS), since its origin, fundamentals, sample preparation strategies, use of chemometric tools for data processing, the advantages and limitations with regard to qualitative and quantitative analysis, aplications and future trends as an analytical technique th
Quím. Nova. Publicado em: 18/07/2019
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4. PANORAMA DA ELETROQUÍMICA E ELETROANALÍTICA NO BRASIL
Electrochemistry and Electroanalytical chemistry play an important role to face the challenges of the contemporary world. They have contributed to the advance of the scientific development of our country, helped to promote economic and social progress as well as cultural dissemination. These areas have greatly contributed to the knowledge about thermodynamic
Quím. Nova. Publicado em: 2017-07
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5. O Estado da arte da cromatografia líquida bidimensional: conceitos fundamentais, instrumentação e aplicações
The constant evolution of science and the growing demand for new technologies have led to new techniques in instrumentation that can improve detection, separation, resolution, and peak capacity. Comprehensive two-dimensional liquid chromatography (LC×LC) is presented as a powerful tool in complex sample analyses. During an analysis, a sample is subjected to
Quím. Nova. Publicado em: 2014
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6. Fundamentos, produção e aplicações de marcas térmicas em eletroforese capilar / Fundamentals, production, and applications of thermal marks in capillary electrophoresis
Em eletroforese capilar, a reprodutibilidade depende essencialmente da manutenção do sinal e no tempo de migração das espécies. A alteração do fluxo eletrosmótico (EOF) entre corridas é um dos principais fatores que afetam esses parâmetros. Nesse trabalho, é proposto um sistema de monitoramento do EOF baseado em marcas térmicas (TMs), que consist
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/08/2011
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7. HPTLC fingerprint: a modern approach for the analytical determination of botanicals
Availability of rapid and reliable methods for detection of quality in plant raw materials and botanicals is urgently needed. The recent HPTLC instrumentation allows to obtain fingerprints useful to ascertain identity and composition. The results of direct application of HPTLC devices in selected cases, using the fingerprint approach, are here reported, cons
Revista Brasileira de Farmacognosia. Publicado em: 29/07/2011
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8. Cromatografia gasosa ultrarrápida: uma visão geral sobre parâmetros, instrumentação e aplicações
Since the introduction of GC there has been an ongoing interest in reducing time of analysis resulting in new terms and definitions such as ultra fast gas chromatography (UF-GC). One of the most used definitions describes UF-GC as a technique that combines the employment of short narrow bore column with very fast temperature programming rates producing chrom
Química Nova. Publicado em: 2010
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9. Desenvolvimento de biossensores eletroquímicos, utilizando matriz polimérica modificada com biomoléculas, para o diagnóstico de câncer de próstata e hepatite C
The development of biologic sensors has become a wide activity in science seeking mainly health and environmental issues. The biosensor development in laboratory has been investigated by many researchers seeking sensitivity, specific, low cost and portable devices. The electrochemical techniques are used in the largest number of works due to the easiness in
Publicado em: 2010
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10. Avaliação de desempenho de câmaras excitadas via linha de transmissão aplicáveis à compatibilidade eletromagnética. / Transmission line excited chamber performance evaluation applied to electromanetic compatibility.
This Thesis presents the proposition of a Transmission Line Excited Chamber configuration. This configuration is considered to be a potential solution for the constraints of reverberation chambers of nowadays. Among this constraints, e.g. the ones related to chamber operation at some MHz, is a physical restriction to implement in tests environments. Moreover
Publicado em: 2009
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11. Detecção condutométrica sem contato: uma nova ferramenta para monitoramento de interações biomoleculares em microssistemas analíticos / Contactless conductivity detection: a new tool for monitoring biomolecular interactions on analytical microsystems
The study reported in this thesis shows the application of a capacitively coupled contactless conductivity detection (C4D) for monitoring biomolecular interactions on analytical microsystems. Initially, the analytical performance of the microsystems fabricated in glass, poly(dimethylsiloxane) (PDMS) and polyester-toner (PT) was investigated in order to choos
Publicado em: 2008
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12. Development of low-cost equipment to instrumentalize the ASTM D 1209-00 method / Desenvolvimento de equipamento de baixo custo instrumentalizar o metodo ASTM D 1209-00
The ASTM D1209-00 method describes the procedure for the visual measurement of the color of essentially light colored liquids, which involves the visual comparation between the color of the samples with the color of Pt-Co standards solutions, with concentration from 1 to 500 unities of Pt-Co, the ASTM D 1209-00 scale (solutions obtained by mixing potassium c
Publicado em: 2008