Determination of sialic acid and gangliosides in biological samples and dairy products: A review
ABSTRACT Gangliosides are sphingolipids containing one or more moieties of sialic acid in their structure. Both gangliosides and sialic acid are bioactive compounds related to animal physiology. Due to their biological relevance, analytical methods adapted to each type of matrix have been developed over time. The present study reviews the main methods applied to the analysis of sialic acid and gangliosides in biological samples and dairy products.
- SourceAvailable from: Julio Sampaio
- Solid-State Circuits Conference. Digest of Technical Papers. 1961 IEEE International; 03/1961
Conference Paper: Spectral histogram and its application to flaw detection[Show abstract] [Hide abstract]
ABSTRACT: The split-spectrum processing (SSP) minimization algorithm has been successfully used to enhance ultrasonic flaw detection. However, this technique is fairly sensitive to the processing parameters, especially the frequency region selected for processing. In the past, the optimal spectral region could be obtained only by trial and error. In the present work, the concept of the spectral histogram has been introduced to achieve the optimal region automatically. In addition, it has been shown that the spectral histogram for the SSP minimization algorithm can be used to approximate the frequency response of this nonlinear system in the statistical sense, which can be utilized for obtaining a linear filter analogous to the Wiener filter. Experimental data obtained by ultrasonic nondestructive testing show that the proposed technique yields performance comparable to that obtained by a trained operator using a trial and error approach, indicating its feasibility in the automation of the SSP minimization algorithmUltrasonics Symposium, 1988. Proceedings., IEEE 1988; 11/1988