Gal'chinskii A.V.,Lviv Medical Institute |
Gloskovskaya N.V.,NASU Bogolyubov Institute for Theoretical Physics |
Yaritskaya L.I.,The State University of Management
Inorganic Materials | Year: 2012
Two pairs of electron and hole traps have been identified in PbI 2-containing CdI 2 crystals in the range 80-305 K using a combination of thermally stimulated and photoinduced depolarization of a photo electret state. The electron traps are identified as Pb + centers in nanocrystalline 2H- and 4H-PbI 2 inclusions in the CdI 2 lattice. One of the hole centers is assumed to be a Pb 2+ vacancy. All of the traps in the binary crystalline system are related to the presence of PbI 2 impurities as a consequence of the formation of heterojunctions between the CdI 2 matrix and nanocrystalline PbI 2 inclusions. We have calculated the energy distribution for filled traps. © Pleiades Publishing, Ltd., 2012.
Yatsyshyn M.,Ivan Franko National University of Lviv |
Reshetnyak O.,Ivan Franko National University of Lviv |
Reshetnyak O.,Army Academy named after Hetman Petro Sahaydachnyi |
Dumanchuk N.,Lviv Medical Institute |
And 3 more authors.
Chemistry and Chemical Technology | Year: 2013
Polyaniline/glauconite-silica (PAn/Gl-Si) composite were obtained by one-step in situ polymerization of aniline in the presence of microdispersion of natural mineral glauconite-silica. The physicochemical properties (phase content, thermal stability, conductivity and magnetization) of the produced samples of composites with different ratio of components have been studied. It was shown that the polymeric component stipulates the conductivity for the synthesized composite samples, while the mineral particles stipulate their magnetic properties and higher thermal stability in comparison with individual polyaniline. Besides, it was determined that participation of the surface of glauconite-silica microparticles in the process of aniline polymerization leads to considerable increasing of ordering of the polymer in the composite. © Yatsyshyn M., Reshetnyak O., Dumanchuk N., Kulyk Yu., Fartushok N., Stadnyk Yu., 2013.
Galchynsky O.V.,Lviv Medical Institute |
Gloskovska N.V.,NASU Bogolyubov Institute for Theoretical Physics |
Yarytska L.I.,The State University of Management
Functional Materials | Year: 2014
The model of acceptor trapping centers which consists of Pb3+ ion and two atomic I0 centers in the temperature range 200-270 K has been suggested. It was constructed on the basis of measurements of thermally stimulated depolarization and spectral sensitivity of photoelectret state in Cdl2 crystals with Pbl2 nanoinclusions. © 2014 - STC "Institute for Single Crystals".
Riabukha O.,Lviv Medical Institute
Perspective Technologies and Methods in MEMS Design, MEMSTECH 2015 - Proceedings of 11th International Conference | Year: 2015
The current stage of medical science development leads to the elaboration and implementation of new information technologies. It acquires particular importance in the study of cells - the basis of any biological system. The offered approach to finding information on morphofunctional state of hormone producing cells is based on decomposition of their special activity on 4 components (synthesis, secretion, transport hormones, the energy supply of these processes), followed by the point assessment on a special scale of number and state of cell organelles that implement the corresponding direction. The object of the study is electron diffraction patterns of cells of the endocrine glands, including the thyroid gland, made by conventional methods. Further mathematical transformation of the obtained digital material allows characterizing specific activity of the studied cell, detecting deviations, developing approaches to their adjustment, and predicting the development of pathological processes. © 2015 Lviv Polytechnic National University.
Kondrat V.,Lviv Medical Institute |
Hrytsyna O.,Ukrainian Academy of Sciences
Archives of Mechanics | Year: 2011
THE NON-LOCAL MODEL of electromagnetothermomechanics for polarized nonferromagnetic solids is proposed. It takes into account the process of local mass displacement due to structural changes of a physically small element of a body. An approach which takes into account possible irreversibility of the local mass displacement is also proposed. On this basis, we have obtained the rheological constitutive relations for the vectors of the mass displacement and for the polarization. The proposed model allows to study the surface charge kinetics and the formation of near-surface inhomogeneities of the stress-strained state as well as the electric polarization, surface tension and disjoining pressure. Copyright © 2011 by IPPT PAN.