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<channel rdf:about="http://memoria.ifrn.edu.br/handle/1044/188">
<title>Engenharias</title>
<link>http://memoria.ifrn.edu.br/handle/1044/188</link>
<description/>
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<rdf:li rdf:resource="http://memoria.ifrn.edu.br/handle/1044/1884"/>
<rdf:li rdf:resource="http://memoria.ifrn.edu.br/handle/1044/1405"/>
<rdf:li rdf:resource="http://memoria.ifrn.edu.br/handle/1044/810"/>
<rdf:li rdf:resource="http://memoria.ifrn.edu.br/handle/1044/735"/>
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<dc:date>2026-04-23T11:28:39Z</dc:date>
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<item rdf:about="http://memoria.ifrn.edu.br/handle/1044/1884">
<title>Behavior of the chromite tailings in a centrifugal concentrator (FALCON)</title>
<link>http://memoria.ifrn.edu.br/handle/1044/1884</link>
<description>Behavior of the chromite tailings in a centrifugal concentrator (FALCON)
The application of the centrifugal concentration gains importance in the world scenario, considering the low environmental impact and the concentration of fine particles. Literature does not present articles using centrifugal concentration (Falcon) for chromite. The material used in the tests is the tailings from a Northeastern Brazil concentration plant, which was homogenized in the laboratory. In the process assays, the number of G (25-300 G) and the fluidization water pressure (20-100 kPa) were optimized. The initial tests used a wide range of particle size of 1 kg mass, with the "best results" being for 50 and 100 G at a pressure of 60 and 80 kPa, respectively, where a metallurgical recovery of 25% and grade close to 20% of Cr2O3 were obtained. The amount of mass showed to be a significant variable in the process, being 250 g the ideal for the material used, which obtained considerable recoveries, even though the grade is still low. These results led to a cut at 250 µm, considering that the liberation of the chromite is of the order of 77 %. The best result was with 150 G and fluidization water pressure of 60 kPa for a metallurgical recovery of 72% and a grade of 28% Cr2O3.
</description>
<dc:date>2019-02-03T00:00:00Z</dc:date>
</item>
<item rdf:about="http://memoria.ifrn.edu.br/handle/1044/1405">
<title>Controle de processo em laboratório de processamento mineral</title>
<link>http://memoria.ifrn.edu.br/handle/1044/1405</link>
<description>Controle de processo em laboratório de processamento mineral
Process control is of great importance in ore treatment plants. The instrumentation used is incipient in most plants. This is probably due to the absence of this content in the curriculum of technical and undergraduate courses in the mineral processing area. This work aims to present the inclusion of process control using frequency inverters and the Arduino platform, in order to automate the process in mineral processing laboratory equipment.  The use of the frequency inverter made it possible to control the processes, such as: feed rate, flow, pressure, force G, frequencies, among others.
</description>
<dc:date>2017-12-04T00:00:00Z</dc:date>
</item>
<item rdf:about="http://memoria.ifrn.edu.br/handle/1044/810">
<title>Synthesizable and prototypic visual-tactile system-in FPGA: an alternative to  analysis and improvement of the voice quality for the hearing impaired people</title>
<link>http://memoria.ifrn.edu.br/handle/1044/810</link>
<description>Synthesizable and prototypic visual-tactile system-in FPGA: an alternative to  analysis and improvement of the voice quality for the hearing impaired people
A comunicação oral compreende uma das mais importantes formas de interação social. O processo de aprendizado da linguagem falada depende da audição, logo, a perda total ou parcial da sensibilidade auditiva dificulta tal aspecto. Técnicas de Processamento Digital de Sinais com caráter não-invasivo são usadas para diagnóstico, apoio e melhoria da qualidade da voz dos surdos. Desse modo, o presente estudo tem como objetivo propor e desenvolver um sistema de análise e correção de desordens vocais por meio da realimentação visual e tátil com módulo implementado em um dispositivo programável do tipo FPGA (Field Programmable Gate Array). Os resultados apontam para&#13;
o potencial de uma proposta de intervenção como medida auxiliar para substituição sensorial, sendo baseada no monitoramento e controle da fala, de modo a permitir a avaliação e remediação por meio de um recurso eletrônico, possibilitando que os indivíduos surdos obtenham um suporte a mais para aprendizado da língua oral. As possibilidades de melhorias nas habilidades comunicativas observadas neste estudo dependem da potencialidade do dispositivo em conjunto com a atuação do fonoaudiólogo, a integração das terapias com o apoio da família, o tempo de utilização e a motivação do usuário, fatores estes que colaboram para o sucesso desta abordagem.
</description>
<dc:date>2016-04-20T00:00:00Z</dc:date>
</item>
<item rdf:about="http://memoria.ifrn.edu.br/handle/1044/735">
<title>Uma rede de educação, ciência &amp; tecnologia chamada IFRN</title>
<link>http://memoria.ifrn.edu.br/handle/1044/735</link>
<description>Uma rede de educação, ciência &amp; tecnologia chamada IFRN
</description>
<dc:date>2010-10-01T00:00:00Z</dc:date>
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