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	Provedor de dados AGRIAMBI (2) CIGR Journal (1) Rev. Ciênc. Agron. (1) PAB (1) Autor Braga Júnior,Roberto A. (2) Aguiar,Rosa Helena (1) Ansari, Mohammad Zaheer (1) Botega,Juliana V. L. (1) Braga Junior,Roberto Alves (1) Dias,Disney Ribeiro (1) Fabbro,Inacio Maria Dal (1) Fabbro,Inácio M. D. (1) Faria,Rafael O. (1) Ferreira,Camila Duarte (1) Kurokawa e Silva,Gabriela (1) Lima,Luiz A. (1) Machado,Maurício P. P. (1) Magalhães-Guedes,Karina Teixeira (1) Nirala, Anil Kumar (1) Nunes,Itaciara Larroza (1) Oliveira,Rafael Augustus de (1) Rabelo,Giovanni F. (1) Schwan,Rosane Freitas (1) Viana,Roberta Oliveira (1) Mais... Palavra-chave Biospeckle (5) Absolute value of the differences (1) Análise de imagem (1) Biological material (1) Biosensor (1) Café (1) Fruit (1) Inertia moment (1) Kefir grains (1) Laser (1) Moisture (1) Moringa oleifera (1) Senescence (1) Speckle grain (1) Vinegar (1) Mais... Tipo do documento Info:eu-repo/semantics/article (5) Ano 2020 (1) 2018 (1) 2014 (1) 2009 (1) 2005 (1) País Brazil (4) China (1) Idioma Inglês (4) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Assessment of fruits during shelf-life storage using biospeckle laser CIGR Journal Ansari, Mohammad Zaheer; Nirala, Anil Kumar. Biospeckle is a phenomenon that interprets an optical pattern formed by illuminating a surface under changes with coherent light.  These patterns are usually analyzed by numerical as well as graphical methods.  Present work evaluated the application of different numerical methods to analyze biospeckle for the assessment of fresh mature fruits.  Quantitative first and second order moments namely Inertia moment (IM) and Absolute Values of Differences (AVD), based on the recording of time history of speckle pattern were used.  Results showed that during shelf-life storage of ten days of different fruits, the IM and AVD values were found to decrease.  In addition, to assess the impact of ripening of fruits on their optical properties, speckle grain size was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biospeckle; Fruit; Speckle grain; Inertia moment; Absolute value of the differences. Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2901 Avaliação da interferência do laser no material biológico vivo AGRIAMBI Botega,Juliana V. L.; Braga Júnior,Roberto A.; Machado,Maurício P. P.; Lima,Luiz A.; Faria,Rafael O.. Algumas das características especiais do laser associadas a fenômenos ópticos, permitem uma série de aplicações na área biológica, baseadas no fenômeno conhecido como "biospeckle". A técnica do biospeckle tem sido desenvolvida como uma ferramenta para análise da atividade de materiais biológicos, monitoramento de umidade, nível de atividade e presença de parasitos, dentre outros atributos. Apesar do monitoramento ocorrer através da iluminação do material por uma fonte de laser de baixa potência, a influência da luz na atividade biológica do espécime passa a ser sempre uma variável a ser investigada. Com este trabalho se objetivou avaliar a influência do laser na análise da atividade biológica medida pelo biospeckle de um tecido vegetal, caso em que uma... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biospeckle; Análise de imagem; Café. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662009000400017 Indirect determination of moisture using biospeckle technique Rev. Ciênc. Agron. Kurokawa e Silva,Gabriela; Aguiar,Rosa Helena; Oliveira,Rafael Augustus de; Fabbro,Inacio Maria Dal. Abstract The classification and selection of agricultural products are very important to assure post-harvest quality processes. However, most of physical and chemical analyses are destructive. It means those products turn useless after these analyses. Moisture is one of the most important parameters to assure the storage quality and as well to facilitate product processing. This research offers an alternative method to determine that parameter through an indirect and non-destructive way, using the image analysis based on the Biospeckle phenomenon. This method consists in get a 10 seconds video of a laser focused on the object. This video is divided in frames, using a computational routine in Matlab and, then, the sequence of images is processed using the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biospeckle; Laser; Moisture; Moringa oleifera. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000100403 Laser biosensor use for the microbial metabolic activity assessment of kefir vinegar PAB Magalhães-Guedes,Karina Teixeira; Viana,Roberta Oliveira; Braga Junior,Roberto Alves; Dias,Disney Ribeiro; Ferreira,Camila Duarte; Nunes,Itaciara Larroza; Schwan,Rosane Freitas. Abstract: The objective of this work was to verify the use of a laser biosensor for the microbial metabolic activity assessment of kefir vinegar. Kefir grains were inoculated in apple must and were analyzed daily using the biospeckle technique. The initial biological activity was of 14.21 pixels per absolute value of differences (AVD). The biological activity of kefir grains decreased in the early days of fermentation and increased on the fourth day to 11.51 pixels per AVD; however, on the last day, the biological activity of kefir grains decreased to 7.12 pixels (alcoholic fermentation) and to 6.77 pixels per AVD (acetic fermentation). This new biospeckle methodology facilitates the microbiological control in fermentation processes. Tipo: Info:eu-repo/semantics/article Palavras-chave: Biosensor; Biospeckle; Kefir grains; Vinegar. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001101276 Laser speckle techniques in quality evaluation of orange fruits AGRIAMBI Rabelo,Giovanni F.; Braga Júnior,Roberto A.; Fabbro,Inácio M. D.. This work presents a study of a new technology applied in quality tests of oranges. Evaluations were performed using a nondestructive and noninvasive method based on the interpretation of an optical phenomenon that occurs when the fruit is illuminated with coherent light, referred as biospeckle. The speckle patterns of laser light scattered in orange fruits have been measured through their quantification. For the quantification of the variation by biospeckle, the autocorrelation function and the modified occurrence matrix were used. From these functions, two parameters were obtained: the statistical cummulant and the moment of inertia, calculated from the modified occurrence matrix. These values were used as quality and senescence indicators for the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological material; Senescence; Biospeckle. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662005000400021 Registros recuperados: 5 Primeira ... 1 ... 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