Orientation and spectral properties of two stilbazolium merocyanine dyes in stretched and unstretched polyvinyl alcohol films

Spectral properties (anisotropy coefficients calculated for absorption, emission and fluorescence decay time) of two stilbazolium merocyanine dyes have been determined to evaluate the applicability of these dyes as sensitizers in photodynamic therapy. The dyes were embedded in an anisotropic polymer matrix. Analysis of the emission decay components measured in polarized light provides information on the interactions of the dye molecules with the polymer matrix being a model of an anisotropic biological system. Different values of the emission anisotropies obtained from various polarized components of fluorescence decays have shown that the orientations of the dye molecules influence their interactions with the polymer. This means that differently oriented dye molecules located in biological systems should exhibit different interactions with membranes. The chain length and type of side groups attached as well as the salt form of the dye molecule were shown to influence the dye-polymer interactions and should be taken into account before the application of merocyanine dyes in medicine. These dyes seem to be promising optical sensors with spectral properties, including the calculated anisotropy coefficients, sensitive to the molecular environment, useful to study orientation and interaction with neighbouring molecules in biological membranes

Historia Leo z Nowej Huty : rozmowa

Dziennik Polski. - 2012, nr 11 (14-15 I), dod. Kronika Krakowska, s. B

Nowa Huta - tradycja i współczesność : od ubiegłego piątku przed NCK oglądać można ciekawą wystawę fotografii

Głos : tygodnik nowohucki. - 2010, nr 14 (2 IV), s.

The Evaluation of Sanitary-Epidemiological Service Conditions On a Submarine

Służba na okręcie podwodnym jest najbardziej stresującą i wymagającą psychologicznie formą służby wojskowej. Posiada swoiste, odmienne od typowych warunki bytowe oraz sanitarno-epidemiologiczne. Praca została przygotowana w oparciu o analizy raportów badań laboratorium środowiska pracy i protokołów kontroli zespołu nadzoru i kontroli sanitarnej WOMP Gdynia, w roku 2014 i 2015 okrętów podwodnych typu Kobben. Wojskowe Ośrodki Medycyny Prewencyjnej kontrolują Jednostki Wojskowe na podstawie przepisów obowiązujących powszechnie w środowisku cywilnym oraz wystandaryzowanych norm NATO. Pomiary dotyczą poziomu hałasu, drgań mechanicznych, czynników chemicznych, promieniowania elektromagnetycznego, fizykochemicznych i biologicznych badań wody oraz przedmiotów kuchennych. Celem tego badania jest ocena warunków służby na okręcie podwodnym pod kątem sanitarno-epidemiologicznym, jako narażenie na choroby zakaźne i zawodowe. Odnotowuje się zwiększony na wybranych stanowiskach poziom hałasu, promieniowania elektromagnetycznego, nadmierną ilość kolonii bakterii na przyrządach kuchennych.Service on a submarine is the most stressful and psychologically challenging form of military service. It is characterised by specific living and sanitaryepidemiological conditions which are far from typical. This work is based on the analyses of reports formulated from research conducted by a working environment laboratory, and on the control protocols of the sanitary supervision and control team (WOMP) Gdynia, from the Kobben submersible vessels in the years 2014 and 2015. Military Centres of Preventive Medicine hold supervision over Military Units pursuant to generally applicable regulations in the civil environment and standardised NATO norms. Measurements concern the level of noise, mechanical vibrations, chemical agents, electromagnetic radiation, physiochemical and biological water and kitchenware tests. The objective of the research is to evaluate the service conditions on a submersible vessel with regard to sanitary-epidemiological aspects such as exposure to infectious and occupational diseases. In selected stations, the conducted measurements indicate an increased level of noise, electromagnetic radiation and excess quantities of bacteria colonies on kitchenware

Ocena zgodności progów słyszenia w badaniach potencjałów słuchowych stanu ustalonego (ASSR), audiometrii tonalnej i słuchowych potencjałów wywołanych pnia mózgu (ABR) u młodych osób z prawidłowym słuchem

Introduction. One of the basic audiological parameter in estimation of hearing sensitivity is hearing threshold. The need for an objective tool to effi ciently predict the audiogram caused that the use and importance of ASSR method is growing in recent times. However, the technique is quite new and needs to be still improved. Aim of the study was the estimation of behavioral audiogram in comparison with ABR and ASSR threshold of young adults with normal hearing. Material and methods. The study sample included 9 subjects with normal hearing (18 ears) with no abnormalities in otoscopy. Behavioral hearing thresholds and ASSRs to carrier frequencies of 0.5, 1, 2, and 4 kHz were obtained. The ASSRs were assessed with Bio-logic MASTER system by the use of four sinusoidal tones both frequency – and amplitude – modulated given simultaneously to every ear for each carrier frequency. The potentials are collected, averaged and analyzed in this method by the fast Fourier transform to yield statistically signifi cant responses. Electrophysiologic threshold responses for click ABR stimuli for the same carrier frequencies for right and left ear were obtained by the use of Bio-logic Navigator Pro unit. Differences and correlations between the ASSRs, ABRs and the behavioral thresholds were determined. Results. We discovered that the values of pure tone audiograms and ABRs thresholds values differ from ASSRs considerably. We could also observed that the difference between behavioral and ABRs threshold is less than for behavioral and ASSRs threshold. Conclusion. To conclude, this study shows that auditory steady-state responses technique is not useful method in estimating of hearing threshold of young adults with normal hearing