Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.00 vteřin. 
Alternative Methods for the Analysis of Structural Changes in Muscle Tissue
Kaspar, Pavel ; Hrabovský, Miroslav (oponent) ; Adam, Vojtěch (oponent) ; Grmela, Lubomír (vedoucí práce)
In this dissertation the topic of structural change analysis of muscle tissue and the methodical approach to this measurement is explored. Even though a considerable number of detection methods for the evaluation of specific changes in muscles exist, especially in the meat intended for consumption, the vast majority focuses only on a single process within the tissue and requires complicated approach and expensive instruments. The topic of this work is therefore not finding more precise and specific means of analysis, than the already existing ones, but rather to select an alternative approach to the given problematic. Part of the explored approach is also the endeavor to find a way to bypass the technological requirements while staying as close to the informational value of the high end methods as possible. To this end an informational base of theoretical knowledge and the experience in experimental approaches in the field of physics, optics and biological tissues and processes is required. The three main approaches described in this work are based on the acquired information throughout the research of the topic and understanding of the basic workings of muscle tissue. The methods created for this thesis make use of photons in the transmission and reflection measurement setup. By observing the changes in absorption, dispersion and polarization of the light after the interaction with muscle tissue sample the other optical parameters are evaluated, including the refractive index and optical anisotropy. The identification of changes in optical parameters together with the Monte Carlo simulation allows for distinction between fresh, aged, dried, frozen and thawed, and refrozen and thawed samples.
Alternative Methods for the Analysis of Structural Changes in Muscle Tissue
Kaspar, Pavel ; Hrabovský, Miroslav (oponent) ; Adam, Vojtěch (oponent) ; Grmela, Lubomír (vedoucí práce)
In this dissertation the topic of structural change analysis of muscle tissue and the methodical approach to this measurement is explored. Even though a considerable number of detection methods for the evaluation of specific changes in muscles exist, especially in the meat intended for consumption, the vast majority focuses only on a single process within the tissue and requires complicated approach and expensive instruments. The topic of this work is therefore not finding more precise and specific means of analysis, than the already existing ones, but rather to select an alternative approach to the given problematic. Part of the explored approach is also the endeavor to find a way to bypass the technological requirements while staying as close to the informational value of the high end methods as possible. To this end an informational base of theoretical knowledge and the experience in experimental approaches in the field of physics, optics and biological tissues and processes is required. The three main approaches described in this work are based on the acquired information throughout the research of the topic and understanding of the basic workings of muscle tissue. The methods created for this thesis make use of photons in the transmission and reflection measurement setup. By observing the changes in absorption, dispersion and polarization of the light after the interaction with muscle tissue sample the other optical parameters are evaluated, including the refractive index and optical anisotropy. The identification of changes in optical parameters together with the Monte Carlo simulation allows for distinction between fresh, aged, dried, frozen and thawed, and refrozen and thawed samples.

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