For 4-cyano-3-fluorophenyl 4-butylbenzoate, nematic glassformer at ambient pressure, dielectric relaxation studies were performed under elevated pressure. In the isobaric experiment, on cooling the nematic phase two superarrhenius α-relaxations, ascribed to the reorientations of molecules around short axes and precession of long molecular axes were found and the Arrhenius β-relaxation related to intramolecular motions. Complexity of dynamics at elevated and ambient pressure is similar. Shift towards lower frequencies was found for both α-relaxations.
A significant increase in the number of patients with heart failure of varied etiology has been observed in the recent years. Apart from pharmacological and surgical therapies, new, non-invasive assistance methods of cardiovascular system are still sought. One of them is external counterpulsation. Within this study, effectiveness of such a form of therapy has been examined in a group of 10 patients with an ischemic left ventricular systolic dysfunction. It has been shown that external counterpulsation has a beneficial influence onto the result of a six-minute walk test and causes a slight decrease in the creatinine concentration in the patients undergoing the tests.
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