RESUMO
1. The objective of this study was to develop a machine vision method for analysing exterior parameters of chicken eggs to automate the stage of primary sorting. 2. The developed algorithm based on predetermined thresholds calculated egg quality indicators, including geometric dimensions, shape index and the mottling grade. The algorithm was implemented with an experimental setup that combined the image-based and the candling methods. A total of 400 egg samples were analysed. 3. Comparison of results of the algorithm with those obtained using the traditional manual method showed that mean value of radii values difference was 0.095 ± 0.058 mm for the sharp and 0.080 ± 0.047 mm for the blunt end of the egg, with standard deviations of 0.58 mm and 0.49 mm, respectively. 4. The correlation coefficient between the shape index values determined by the two methods was 0.93; the standard deviation of absolute differences between corresponding values was 1.05%. 5. The results of mottling grade estimation were compared using F-measure and confusion matrix. 6. The results allow the possibility to perform the assessment of egg exterior quality factors in an automatic mode, independent of the expertise of a grader.
Assuntos
Casca de Ovo , Ovos , Qualidade dos Alimentos , Tecnologia de Alimentos/instrumentação , Algoritmos , Animais , Calibragem , Galinhas , Tecnologia de Alimentos/métodos , Reprodutibilidade dos Testes , Federação RussaRESUMO
Considerable hemorheological changes and depression of EEG parameters were revealed in rats with cerebral ischemia. Course peroral treatment with scarlet lightning extract in a daily dose of 150 mg/kg for 5 days reduced the severity of hemorheological disorders. It manifested in a decrease in whole blood viscosity, plasma viscosity, erythrocyte aggregation, and fibrinogen concentration and increase in deformability. The extract of lightning extract improved EEG activity in rats with cerebral ischemia.
