Electronic Nose
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Characterization of volatiles in red- and white-fleshed loquat (Eriobotrya japonica) fruits by electronic nose and headspace solid-phase microextraction with gas chromatography-mass spectrometry
Abstract Aroma differences are generally sensed in white- and red-fleshed loquats. Here, volatile compounds in four white- and three red-fleshed loquat varieties were investigated by headspace solid-phase microextraction and combined analysis of electronic nose (e-nose) and gas chromatography-mass spectrometry (GC-MS). In total, 83 volatile compounds were id
Food Sci. Technol. Publicado em: 2020-06
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2. Volatile compounds profiles in unroasted Coffea arabica and Coffea canephora beans from different countries
Abstract Aroma is the most important factor in assessing the quality of coffee. The volatile compounds profile could be very important to confirm the authenticity of Coffea arabica. The study was carried out on two species of unroasted coffee beans: Coffea arabica from Colombia and Nepal and Coffea robusta from Uganda and Vietnam. Both Coffea arabica and Cof
Food Sci. Technol. Publicado em: 01/06/2017
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3. Applications of electronic noses in meat analysis
Abstract Electronic noses are devices able to characterize and differentiate the aroma profiles of various food, especially meat and meat products. During recent years e-noses have been widely used in food analysis and proved to provide a fast, simple, non-expensive and non-destructive method of food assessment and quality control. The aim of this study is t
Food Sci. Technol. Publicado em: 07/07/2016
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4. Prospective Study of the Surgical Techniques Used in Primary Rhinoplasty on the Caucasian Nose and Comparison of the Preoperative and Postoperative Anthropometric Nose Measurements
Introduction The knowledge and study of surgical techniques and anthropometric measurements of the nose make possible a qualitative and quantitative analysis of surgical results.
Objective Study the main technique used in rhinoplasty on Caucasian noses and compare preoperative and postoperative anthropom
Int. Arch. Otorhinolaryngol.. Publicado em: 2015-03
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5. Rapid assessment of quality of deer antler slices by using an electronic nose coupled with chemometric analysis
Deer antler is a precious animal-sourced traditional Chinese medicine. We aimed to rapidly assess the quality of deer antler slices by electronic nose so that we can ensure medical safety. In this study, response intensity of the electronic nose was favorably optimized, and samples were well assessed by using an electronic nose based on LDA model. The result
Rev. bras. farmacogn.. Publicado em: 2014-12
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6. Scent analysis of Rosa laevigata through metal oxide sensor array electronic nose
The scent fingerprint of Rosa laevigata Michx., Rosaceae, samples harvested at different periods was investigated. Principal component analysis (PCA) and discriminant factor analysis (DFA) were done on the scent response values measured by an electronic nose (EN) sensor. Statistical quality control (SQC) analysis was also conducted. The R. laevigata samples
Revista Brasileira de Farmacognosia. Publicado em: 29/07/2011
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7. Identificação de plásticos comerciais por meio de um nariz eletrônico baseado em polímeros condutores. / Identification of plastics commercials through an electronic nose based on conducting polymers.
O presente trabalho consiste no desenvolvimento de uma nova técnica de identificação de materiais poliméricos por meio do uso de um nariz eletrônico. Narizes eletrônicos têm sido desenvolvidos para detecção automática e classificação de odores e gases. São instrumentos capazes de medir a concentração ou intensidade odorante de modo similar a u
Publicado em: 2011
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8. Desenvolvimento de sistemas multissensoriais híbridos, língua e narizes eletrônicos para a avaliação de combustíveis. / Development of multisensor hybrid systems, electronic tongue and electronic noses for fuel evaluation.
A utilização simultânea de diferentes tecnologias de sensores é um método eficiente para aumentar o desempenho de sistemas sensoriais. Com o intuito de contribuir para um melhor controle da qualidade de combustíveis brasileiros, foram desenvolvidos neste trabalho sensores para serem utilizados em Língua e Narizes Eletrônicos. Estes sistemas multissen
Publicado em: 2010
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9. Seeing smells: development of an optoelectronic nose
The development of an array of chemically-responsive dyes on a porous membrane and in its use as a general sensor for odors and volatile organic compounds (VOCs) is reviewed. These colorimetric sensor arrays (CSA) act as an "optoelectronic nose" by using an array of multiple dyes whose color changes are based on the full range of intermolecular interactions.
Química Nova. Publicado em: 2007-06
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10. Aplicação de análises estatística e neural para reconhecimento de sinais de odores
This work investigates the use of an electronic nose prototype for prognosis of Diabetes Mellitus. The work involves five main parts: (1) building of odors database by aroma sensors; (2) an evaluation of the odors database through multivariate statistics techniques;(3) use of Multilayer Perceptron (MLP) and Radial Basis Function (RBF) Artificial Neural Netwo
Publicado em: 2007
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11. Impacto aromático dos componentes voláteis do café soluvél : uma abordagem analítica e sensorial
A aplicação de métodos instrumentais e analíticos cada vez mais sofisticados tem aprimorado a avaliação objetiva do aroma, característica determinante da qualidade de alimentos e de sua aceitabilidade, tendo sido detectados mais de oitocentos componentes voláteis no café torrado, mas com escassa informação disponível para café solúvel. Atualmen
Publicado em: 2006
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12. Pattern recognition in integrated sensors. / Reconhecimento de padrões em sensores integrados.
In this work, several methods for pattern recognition and signal processing were studied and applied, using data obtained from different experimental setup of the Electronic Nose. The signals were obtained from the array of conductive sensor into de Nose system, which worked under variable temperature condition. The signal analyses results were used to obtai
Publicado em: 2005