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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The report on a development of advanced methods of the study of speciation and description of sorption of actinoids
 Vopálka, D. ; Drtinová, B. ; Motl, A. ; Šebera, Jakub ; Štamberg, K. ; Vetešník, A. ; Višňák, J. ; Zavadilová, A.
The report of the last period of the project presents a development of three topics, each of which relates to the study of the radionuclide migration in fields near to disposal of nuclear waste and other nuclear facilities. The local structure and thermodynamic stability of uranyl sulfate complexes in aqueous solution was investigated by DFT theory. Interpretation of UV-VIS absorption spectra of uranyl-sulfate and -aqua complexes in aqueous solution was performed within the time-dependent DFT calculations. The structures were optimized in the aqueous phase at the B3LYP level by using model COSMO. The calculated geometries of aqua-sulfate complexes corresponded to the experimental data. DFT method described qualitatively thermodynamic stability of complexes in solution. TD-DFT method correctly interpreted only a part of absorption spectra (190-340 nm). In order to interpret the area around 420 nm it will be necessary to use the two-component relativistic TD-DFT.
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Shape of the human vocal folds in a defined phonation position
 Horáček, Jaromír ; Švec, J. ; Klepáček, I. ; Vetešník, A. ; Veselý, Jan
The paper presents experimental investigation of aerodynamic shape of the vocal folds measured in a defined phonation position with excised larynges. The vocal fold vibrations were excited by airflow and monitored acoustically, by means of laser vibrometry, pressure transducers and stroboscopy techniques. Method for casting laryngeal cavities for determining the vocal fold shape was developed. By the optical topography and the electron scanning microscope the shapes of the vocal folds were analysed.
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