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1.
Article in English | MEDLINE | ID: mdl-30079403

ABSTRACT

Electronic noses (E-noses) are devices capable of detecting and identifying Volatile Organic Compounds (VOCs) in a simple and fast method. In this work, we present the development process of an opto-electronic device based on sensing films that have unique stimuli-responsive properties, altering their optical and electrical properties, when interacting with VOCs. This interaction results in optical and electrical signals that can be collected, and further processed and analysed. Two versions of the device were designed and assembled. E-nose V1 is an optical device, and E-nose V2 is a hybrid opto-electronic device. Both E-noses architectures include a delivery system, a detection chamber, and a transduction system. After the validation of the E-nose V1 prototype, the E-nose V2 was implemented, resulting in an easy-to-handle, miniaturized and stable device. Results from E-nose V2 indicated optical signals reproducibility, and the possibility of coupling the electrical signals to the optical response for VOCs sensing.

2.
Rev. Salusvita (Impr.) ; 23(3): 513-530, 2004.
Article in Portuguese | LILACS | ID: lil-424404

ABSTRACT

Grabde parte das crianças gêmeas apresenta intecorrências pré-, pei e pós-natais, aspectos considerados de risco para possiveis alterações de linguagem. Afim de demosntrar tais aspectos, este artigo descreve as alterações de linguagem de dois irmãos gêmeos - de três anos e meio, do sexo masculino - submetidos à avaliação e ao processo de intervenção fonaudiológica. Os resultados obtidos foram: atividade dialógica restrita com o meio social, inteligibilidade de fala prejudicada, simplificações idissiocráticas e linguagem secreta entre o par. Conclui-se, então, que o processo de intervenção fonaudiológica atuou reduzindo a auto-eficiência da linguagem secreta e a orientação familiar promoveu o processo de socialização dos gêmeos...


Subject(s)
Male , Female , Humans , Twins, Monozygotic , Language Disorders
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