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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1272-1280 
    ISSN: 0392-6737
    Keywords: Molecular biophysics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si è misurato il coefficiente di assorbimento acustico in una soluzione all' 1% di lisozima, a frequenze comprese tre 5 e 50 MHz, in funzione del tempo. Dalle misure fatte è evidenziato un processo di rilassamento, dovuto al movimento di diffrazione dei cluster. Tale processo va gradualmente spegnendosi allorché i cluster interagenti si uniscono in una struttura tixotropica. I risultati ottenuti sono discussi in termini di un modello già proposto in base a precedenti esperimenti di misure di viscosità e diffusione di luce.
    Abstract: Резюме Измеряется коэффициент акустического поглощения в 1% w/w растворе лизоцима в области частот от 5 до 50 МГц, как функция времени. Показывается, что имеет место процесс релаксации, обусловленный диффузионным движением кластеров. Такой процесс релаксации постепенно затухает, когда взаимодействующие кластеры образуют тиксотропную структуру. Полученные результаты обсуждаются в рамках общей модели, предложенной ранее на оснобе экспериментальных измерений вязкости и рассеяния света.
    Notes: Summary The acoustic-absorption coefficient is measured in a 1% w/w lysozyme solution, at frequencies ranging from 5 to 50 MHz, as a function of time. It is shown that a relaxation process due to diffusional motion of clusters exists. Such a process is gradually quenched, as the interacting clusters become fixed in a thixotropic solidlike structure. The obtained results are discussed in the frame of a general model early proposed on the basis of viscosity and light scattering experiments.
    Type of Medium: Electronic Resource
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