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Institution

Kazimierz Wielki University in Bydgoszcz

EducationBydgoszcz, Poland
About: Kazimierz Wielki University in Bydgoszcz is a education organization based out in Bydgoszcz, Poland. It is known for research contribution in the topics: Population & Luminescence. The organization has 1109 authors who have published 2923 publications receiving 19548 citations. The organization is also known as: Casimir the Great University & Uniwersytet Kazimierza Wielkiego w Bydgoszczy.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the effect of the dicumyl peroxide (DCP) content on thermal and mechanical properties of polylactide (PLA) was determined. But, the authors focused on the extrusion of the PLA and DCP.
Abstract: The aim of this article was to determine the effect of the dicumyl peroxide (DCP) content on thermal and mechanical properties of polylactide (PLA). Reactive extrusion of the PLA and DCP b...

39 citations

Book ChapterDOI
09 Jun 2013
TL;DR: The publication shows the way of implementing arithmetic operations on fuzzy numbers based on Ordered Fuzzy Numbers, a logarithm and exponentiation was added, which allows to obtain outcomes for real numbers in spite of using the fuzzy values.
Abstract: The publication shows the way of implementing arithmetic operations on fuzzy numbers based on Ordered Fuzzy Numbers calculation model [12], [13], [14] This model allows to perform calculations on fuzzy numbers in a way that the outcomes meet the same criteria as the outcomes of calculations on real numbers In this text, to the four basic operations with Ordered Fuzzy Numbers, a logarithm and exponentiation was added Several examples of the calculations are included, the results of which are obvious and typical of real numbers but not achievable with the use of conventional computational methods for fuzzy numbers From these examples one can see that the use of Ordered Fuzzy Numbers allows to obtain outcomes for real numbers in spite of using the fuzzy values

38 citations

Journal ArticleDOI
TL;DR: In this article, the results of studies and comparison of selected properties of the modified PLA surface layer were presented, and the best modification results were obtained using the plasma method, which produced plasma in the air atmosphere under reduced pressure and a pulsed ArF excimer laser with fluency of 60mJ/cm2 was applied.

38 citations

Journal ArticleDOI
TL;DR: In this paper, single crystalline films (SCFs) with different Bi3+ contents were studied at 1.7-300 K by the time-resolved luminescence spectroscopy methods under excitation in the 2.4-20 eV energy range.
Abstract: Single crystalline films (SCFs) of Y3Al5O12:Bi and Lu3Al5O12:Bi with different Bi3+ contents are studied at 1.7–300 K by the time-resolved luminescence spectroscopy methods under excitation in the 2.4–20 eV energy range. The ultraviolet (UV) emission of these SCFs is shown to arise from the radiative decay of the metastable and radiative minima of the triplet relaxed excited state (RES) of a single Bi3+ centre, which are related to the 3P0 and 3P1 levels of a free Bi3+ ion, respectively. At T 100 K, both the high-energy shift of the maximum and the shortening of the decay time of the UV emission with increasing temperature are caused by thermally stimulated non-radiative transitions between the metastable and radiative minima of the triplet RES. Their excitation bands located around 4.6, 5.2 and 5.95 eV are assigned to the 1S0 3P1, 1S0 3P2 and 1S0 1P1 transitions, respectively, in free Bi3+ ions. The luminescence of dimer Bi3+–Bi3+ centres is not detected in the SCFs studied. The lower-energy (≈2.6 eV) visible (VIS) emission of these SCFs is due to an exciton, localized near a single Bi3+ ion, while the higher-energy (2.75 eV) VIS emission, an exciton, localized near a dimer Bi3+–Bi3+ centre. The phenomenological models are proposed to describe the excited-state dynamics of all the luminescence centres studied. Application of the two- or three-excited-level models on the temperature evolution of the luminescence decay times has allowed determination of characteristic parameters of the corresponding RES: the energy separations between the excited states and the rates of the radiative and non-radiative transitions from these states.

38 citations

Journal ArticleDOI
TL;DR: In this article, the authors analyzed changes in surface area of lake Boon Tsagaan and lake Orog taking place in the last 40 years in the context of climate conditions and permafrost degradation.

38 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202312
202237
2021217
2020246
2019247
2018278