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Abstract

The article is a sort of advanced publication workshop prepared by a group of M.Sc. students in ICT participating in the course on QIT. The idea behind the publishing exercise is to try to link, if possible, individual own work just under realization for the thesis with new unique possibilities offered by the QIT. Each chapter is written by a single author defining concisely her/his research interest in the classical ICT field and trying to find possible correlations with respective abruptly developing branches of the QIT. The chapter texts are somehow moderated by the tutor but are exclusively authored by young researchers. The aim was to present their views on the possible development directions of particular subfields of QIT, if not fully mature, but still based on their own ideas, research and dreams.
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Authors and Affiliations

Dagmara A. Drecka
1
Marek T. Lipiński
1
Adrian Z. Sarwiński
1
Arkadiusz Sowa
1
Jakub K. Turliński
1
Ryszard S. Romaniuk
1

  1. Warsaw University of Technology, Poland
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Abstract

Polyvinylidene fluoride (PVDF) is one of the most important piezoelectric polymers. Piezoelectricity in PVDF appears in polar b and ɣ phases. Piezoelectric fibers obtained by means of electrospinning may be used in tissue engineering (TE) as a smart analogue of the natural extracellular matrix (ECM). We present results showing the effect of rotational speed of the collecting drum on morphology, phase content and in vitro biological properties of PVDF nonwovens. Morphology and phase composition were analyzed using scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR), respectively. It was shown that increasing rotational speed of the collector leads to an increase in fiber orientation, reduction in fiber diameter and considerable increase of polar phase content, both b and g. In vitro cell culture experiments, carried out with the use of ultrasounds in order to generate electrical potential via piezoelectricity, indicate a positive effect of polar phases on fibroblasts. Our preliminary results demonstrate that piezoelectric PVDF scaffolds are promising materials for tissue engineering applications, particularly for neural tissue regeneration, where the electric potential is crucial.

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Authors and Affiliations

A. Zaszczyńska
P.Ł. Sajkiewicz
A. Gradys
R. Tymkiewicz
O. Urbanek
D. Kołbuk
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Abstract

This article presents little known facts sampled from the notes and personal records of Professor Stanis$aw Pigoń and Karol Wojtyła. The two met for the first time in 1938, when young Wojtyła began his studies at the Polish Department of the Jagiellonian University. A bond of mutual liking and respect, based on similar personalities and similar war experiences, morphed into an abiding friendship in the years after the war. The article chronicles that friendship on the basis of documents and private papers held in the Jagiellonian Library (Professor Pigoń’s Archives) and the Archives of the Metropolitan Curia in Cracow. Wojtyła, when he became Pope John Paul II always spoke warmly about his university teachers, especially about Professor Pigoń.

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Authors and Affiliations

Franciszek Ziejka

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