Search Results - "da Silva, José A. Fracassi"

Capillary electrophoresis with capacitively coupled contactless conductivity detection (C4D) for rapid and simple determination of lactate in sweat by Rocha, Kionnys N., da Silva, José A. Fracassi, Jesus, Dosil P.

“…An analytical method based on capillary electrophoresis (CE) using capacitively coupled contactless conductivity detection (C4D) was developed and validated…”
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Separation of carbohydrates on electrophoresis microchips with controlled electrolysis by Duarte‐Junior, Gerson F., Lobo‐Júnior, Eulício O., Medeiros Junior, Íris, da Silva, José A. Fracassi, do Lago, Claudimir L., Coltro, Wendell K. T.

“…This study reports the separation of fructose, galactose, glucose, lactose and sucrose on glass microchip electrophoresis (ME) devices using a microfluidic…”
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Environmental formaldehyde analysis by active diffusive sampling with a bundle of polypropylene porous capillaries followed by capillary zone electrophoretic separation and contactless conductivity detection by Rocha, Flávio R., Coelho, Lúcia H.G., Lopes, Marcelo L.A., Carvalho, Lilian R.F., Fracassi da Silva, José A., do Lago, Claudimir L., Gutz, Ivano G.R.

“…Compared to other volatile carbonylic compounds present in outdoor air, formaldehyde (CH 2O) is the most toxic, deserving more attention in terms of indoor and…”
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Production of Calcium Oxalate Crystals by the Basidiomycete Moniliophthora perniciosa, the Causal Agent of Witches' Broom Disease of Cacao by Rio, Maria Carolina S. do, de Oliveira, Bruno V, de Tomazella, Daniela P. T, Silva, José A. Fracassi da, Pereira, Gonçalo A. G

“…Oxalic acid has been shown as a virulence factor for some phytopathogenic fungi, removing calcium from pectin and favoring plant cell wall degradation…”
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Contactless conductivity detection for capillary electrophoresis: Hardware improvements and optimization of the input-signal amplitude and frequency by Fracassi da Silva, José A, Guzman, Norberto, do Lago, Claudimir L

“…A new prototype of contactless conductivity detector, smaller and easier to operate than the former version, is described. For a fused-silica capillary with…”
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An Oscillometric Detector for Capillary Electrophoresis by Fracassi da Silva, José A, do Lago, Claudimir L

“…An oscillometric detector for capillary electrophoresis (CE) has been described. Two 2-mm silver rings separated by 1 mm were painted over the polyimide…”
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Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection by Silva, José A. Fracassi da, Ricelli, Nara L., Carvalho, Alexandre Z., Lago, Claudimir L. do

“…One of the most common uses of capillary electrophoresis with conductometric detection is the analysis of different samples containing alkaline and alkaline…”
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Trace Levels Determination of Ammonium by Flow Injection Analysis Using Gas-Diffusion and Capacitively Coupled Contactless Conductivity Detection by Braz, Henrique L., Ito, Débora T., da Silva, José A. Fracassi, do Lago, Claudimir L., Pedrotti, Jairo J.

“…A sensitive analytical method based on gas‐diffusion flow injection system for ammonium ion determination at trace levels with capacitively coupled contactless…”
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Electrophoresis microchip fabricated by a direct-printing process with end-channel amperometric detection by Tomazelli Coltro, Wendell K., Fracassi da Silva, José A., Torres da Silva, Heron D., Richter, Eduardo M., Furlan, Rogério, Angnes, Lúcio, do Lago, Claudimir L., Mazo, Luiz H., Carrilho, Emanuel

“…We describe the development of an electrophoresis microchip fabricated by a direct‐printing process, based on lamination of printed polyester films with…”
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Wet deposition and related atmospheric chemistry in the São Paulo metropolis, Brazil: Part 1. Major inorganic ions in rainwater as evaluated by capillary electrophoresis with contactless conductivity detection by Rocha, Flávio R, Fracassi da Silva, José A, Lago, Claudimir L, Fornaro, Adalgiza, Gutz, Ivano G.R

“…The metropolitan region of São Paulo (17.8 million inhabitants) presents serious air quality problems. An official network monitors key air pollutants,…”
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PREPARO DE AMOSTRAS ASSISTIDO POR CAMPO ELÉTRICO: FUNDAMENTOS, AVANÇOS, APLICAÇÕES E TENDÊNCIAS by Camila D. M. Campos, Richard P. S. de Campos, José A. Fracassi da Silva, Dosil P. Jesus, Ricardo M. Orlando

“…Sample preparation is commonly considered a key step to achieve selective, sensitive, and reliable chemical analyses, particularly those involving complex…”
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Disposable twin gold electrodes for amperometric detection in capillary electrophoresis by Richter, Eduardo M., Fracassi da Silva, José A., Gutz, Ivano G. Rolf, do Lago, Claudimir L., Angnes, Lúcio

“…We describe a simple and easy way to construct gold microelectrodes for amperometric detection in capillary electrophoresis (CE). The gold microelectrodes, in…”
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Microfluidic devices obtained by thermal toner transferring on glass substrate by do Lago, Claudimir L., Neves, Carlos A., Pereira de Jesus, Dosil, da Silva, Heron D. T., Brito-Neto, José G. A., Fracassi da Silva, José A.

“…A new process for the manufacture of microfluidic devices based on deposition of laser‐printing toner on glass substrates is described. It is an alternative…”
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Retention of copper(II) metal ions in a silicon-glass microfluidic device by Silva, José A. Fracassi da, Lago, Claudimir L. do, Furlan, Rogerio

“…This work describes the construction of a silicon microchip for retention of copper(II) metal ions. Conventional photolithographic process was applied to…”
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SAMPLE PREPARATION ASSISTED BY ELECTRIC FIELDS: FUNDAMENTALS, ADVANCES, APPLICATIONS, AND TRENDS by Campos, Camila D. M., Campos, Richard P. S. de, Silva, José A. Fracassi da, Jesus, Dosil P., Orlando, Ricardo M.

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Simultaneous determination of aspartame, cyclamate, saccharin and acesulfame-K in soft drinks and tabletop sweetener formulations by capillary electrophoresis with capacitively coupled contactless conductivity detection by Bergamo, Ana Beatriz, Fracassi da Silva, José Alberto, de Jesus, Dosil Pereira

“…Capillary electrophoresis (CE) with capacitively coupled contactless conductivity detection (C 4D) was used for simple, rapid, and simultaneous determination…”
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Development of a Digital Conductivity Meter with Frequency Response for Remote Monitoring by Fracassi da Silva, José A, Barros, Marcelo F., do Lago, Claudimir L.

“…A simple and inexpensive conductivity meter with frequency response is shown. Good linearity is achieved up to 10 mS but, by using a special function, given…”
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Simultaneous determination of free fluoride and monofluorophosphate in toothpaste by capillary electrophoresis with capacitively coupled contactless conductivity detection by Guimarães, Ivanilce Cristina, Rezende, Camila Cardoso, da Silva, José Alberto Fracassi, de Jesus, Dosil Pereira

“…Capillary electrophoresis (CE) with capacitively coupled contactless conductivity detection (C 4D) was used for rapid, accurate and simultaneous determination…”
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Conductivity detection of aliphatic alcohols in micellar electrokinetic chromatography using an oscillometric detector by Fracassi da Silva, José A., do Lago, Claudimir L.

“…Although conductivity is usually applied to detect ionic species in capillary electrophoresis (CE), nonionic species can also be detected by their indirect…”
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Use of experimental design and effective mobility calculations to develop a method for the determination of antimicrobials by capillary electrophoresis by Mamani, Mónica Cecília Vargas, Amaya-Farfan, Jaime, Reyes, Felix Guillermo Reyes, Silva, José Alberto Fracassi da, Rath, Susanne

“…A capillary zone electrophoresis (CZE) method for the determination of chloramphenicol (CLP), danofloxacin (DANO), ciprofloxacin (CIPRO), enrofloxacin (ENRO),…”
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