Microchip
Mostrando 13-24 de 53 artigos, teses e dissertações.
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13. Proposta de reatores eletrônicos para iluminação com alto desempenho
O presente trabalho aborda o desenvolvimento e a implementação do protótipo de um reator eletrônico destinado à alimentação de lâmpadas HID em alta freqüência e também um reator para a alimentação de lâmpadas LED. A utilização de reatores eletrônicos para alimentar lâmpadas de descarga ou lâmpadas LED traz inúmeros benefícios, como aumen
Publicado em: 2008
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14. Proposta de reatores eletrÃnicos para iluminaÃÃo com alto desempenho
O presente trabalho aborda o desenvolvimento e a implementaÃÃo do protÃtipo de um reator eletrÃnico destinado à alimentaÃÃo de lÃmpadas HID em alta freqÃÃncia e tambÃm um reator para a alimentaÃÃo de lÃmpadas LED. A utilizaÃÃo de reatores eletrÃnicos para alimentar lÃmpadas de descarga ou lÃmpadas LED traz inÃmeros benefÃcios, como aumen
Publicado em: 2008
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15. Instrumental innovations in capillary electrophoresis with electrochemical detection in the analysis of mono and oligosaccharides, amino acids and proteins / Inovações instrumentais em sistemas de eletroforese capilar com detecção eletroquímica e aplicações em análises de mono e oligossacarídeos, aminoácidos e proteínas
This work shows the development of two equipments (H1 and B1) of capillary electrophoresis (CE) with contactless conductivity detection (C4D) applied to the analysis of biomolecules. They have a system named MSE (module for separated electrolysis) that avoids the harmful effect of electrolysis. H1 have only one capillary and the majority of the experiments p
Publicado em: 2008
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16. Environment sensing using ZigBee standard / Sensoriamento de ambiente utilizando o padrão ZigBee
A comunicação sem fio (wireless) vem sofrendo uma enorme expansão nos últimos anos. Para esse tipo de comunicação foram criados alguns padrões, destacando-se o Wi-Fi, o Bluetooth e mais recentemente o ZigBee. Este último, o ZigBee, engloba aplicações de monitoração e sensoriamento de sistemas, o que o torna adequado para aplicações residenciais
Publicado em: 2007
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17. Development of a oxigen saturation and cardiac frequency prototype for rodents. / Desenvolvimento de um protótipo para monitoração de saturação de oxigênio e freqüência cardíaca para roedores.
The equipments use to monitoring physiological parameters isnt just crucial in patients who are submitted to some medical procedures but it is also of extreme value for animals in similar use. This project has as main objective the development of a monitor oxygen saturation and cardiac frequency for mice; the system is compound of a compact prototype device
Publicado em: 2007
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18. Desenvolvimento de processos de deposição de filmes filmes sobre substratos polimericos fotopolimerizdos / Development of process of deposition of thin films on photopolymerization polymeric substrats
A new era has begun all around the world. The quality of life and health depends more and more on the human capacity of resolving problems that are becoming longer and more complex day by day. As communication and globalization advance, time becomes scarcer and more precious. The semiconductor materials which are used to activate the logical functions, the h
Publicado em: 2007
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19. "Fabricação e avaliação de microdispositivos para eletroforese com detecção eletroquímica" / "Fabrication and Evaluation of Electrophoresis Microdevices coupled with Electrochemical Detection"
This work describes the development of electrophoresis microchip fabricated by direct-printing and photolithographic processes. The channel structures of the devices fabricated by direct-printing process are defined by polyester films (base and cover) and by a toner layer (walls). The characterization of toner surface and composition were necessary for a bet
Publicado em: 2004
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20. Detecção eletroquímica em eletroforese capilar
This review focuses the development of electrochemical detection systems coupled to capillary electrophoresis. Conductometric, amperometric, voltametric, and potentiometric modes of detection are reviewed. The positioning of the electrodes, interferences of high electric field, and the materials employed in the fabrication and modification of the electrodes
Química Nova. Publicado em: 2003-01
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21. Optical Transmitter with Millimeter-wave Subcarrier
There is increasing need for high-speed fiberoptic links operating in the microwave and millimeter wave range for applications like cellular personal communication systems (PCS), high capacity distribution systems (HDTV, data, interactive multimedia), phased array, remote antennas, etc. The conventional methods of high frequency modulation at millimeter-wave
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 199706
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22. Microchip Module for Blood Sample Preparation and Nucleic Acid Amplification Reactions
A computer numerical control-machined plexiglas-based microchip module was designed and constructed for the integration of blood sample preparation and nucleic acid amplification reactions. The microchip module is comprised of a custom-made heater-cooler for thermal cycling, a series of 254 μm × 254 μm microchannels for transporting human whole blood
Cold Spring Harbor Laboratory Press.
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23. Massive parallel analysis of the binding specificity of histone-like protein HU to single- and double-stranded DNA with generic oligodeoxyribonucleotide microchips
A generic hexadeoxyribonucleotide microchip has been applied to test the DNA-binding properties of HU histone-like bacterial protein, which is known to have a low sequence specificity. All 4096 hexamers flanked within 8mers by degenerate bases at both the 3′- and 5′-ends were immobilized within the 100 × 100 × 20 mm polyacrylamide gel pads of the
Oxford University Press.
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24. Rapid Detection of Deletion, Insertion, and Substitution Mutations via Heteroduplex Analysis Using Capillary- and Microchip-Based Electrophoresis
In this report, we explore the potential of capillary and microchip electrophoresis for heteroduplex analysis– (HDA) based mutation detection. Fluorescent dye-labeled primers (6-FAM-tagged) were used to amplify the DNA fragments ranging from 130 to 400 bp. The effects of DNA fragment length, matrix additives, pH, and salt were evaluated for capillary elect
Cold Spring Harbor Laboratory Press.