Repozytorium Uniwersytetu Śląskiego RE-BUŚ
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Relationship between vertical jump tests and ice-skating performance in junior Polish ice hockey players
Full text linkThe aim of this study was to determine the relationships between vertical jumps (VJ) and various on-ice skating performances of junior ice hockey players (n = 19). The three modes of VJ or off-ice measures were countermovement jump with arm swing (CMJ), squat jump (SJ) and depth drop jump (DDJ). The on-ice
skating performance was measured by the skating multistage aerobic test (SMAT), forward and backward
acceleration test, top speed test, and repeated sprint ability (RSA) test. The relationships between the variables were quantified using Pearson’s product-moment correlation. DDJ showed a significant positive correlation with forward average skating speed (FASS) (r = 0.62) and strong correlations with backward average skating speed (BASS) (r = 0.81), and maximum skating speed (MSS) (r = 0.71). SJ was found to be strongly correlated with BASS (r = 0.82) and MSS (r = 0.76), whereas the only on-ice performance that significantly correlated with CMJ was BASS (r = 0.68). All three modes of VJ were inversely and non-significantly correlated with performance decrement index and fatigue index, as determined by the RSA test. SMAT was not significantly correlated with either VJ or RSA. Correlations between all three modes of VJ tests were significant. Therefore, this study concludes that: (1) DDJ can be used as a predictor of all the ice skating speed tests, whereas SJ can predict BASS and MSS. CMJ, on the other hand, can predict the performance of only BASS. (2) RSA performance cannot be predicted from CMJ, SJ, or DDJ tests, and (3) neither any of the VJ nor RSA can predict skating endurance of junior ice hockey players
Monitoring the concentrations of Cd, Cu, Pb, Ni, Cr, Zn, Mn and Fe in cultivated Haplic Luvisol soils using near-infrared reflectance spectroscopy and chemometrics
No full textThis study illustrates the successful application of near-infrared reflectance spectroscopy extended with chemometric modeling to profile Cd, Cu, Pb, Ni, Cr, Zn, Mn, and Fe in cultivated and fertilized Haplic Luvisol soils. The partial least-squares regression (PLSR) models were built to predict the elements present in the soil samples at very low contents. A total of 234 soil samples were investigated, and their reflectance spectra were recorded in the spectral range of 1100–2500 nm. The optimal spectral preprocessing was selected among 56 different scenarios considering the root mean squared error of prediction (RMSEP). The partial robust M-regression method (PRM) was used to handle the outlying samples. The most promising models were obtained for estimating the amount of Cu (using PRM) and Pb (using the classic PLS), leading to RMSEP expressed as a percentage of the response range, equal to 9.63% and 11.5%, respectively. The respective coefficients of determination for validation samples were equal to 0.86 and 0.58, respectively. Assuming similar variability of model residuals for the model and test set samples, coefficients of determination for validation samples were 0.94 and 0.89, respectively. Moreover, the favorable PLS models were also built for Zn, Mn, and Fe with coefficients of determinations equal to 0.87, 0.87, and 0.79
Poczucie samowystarczalności barierą kształtowania otwartej tożsamości religijnej w „czasie marnym”
No full textThe pedagogical reflection on methods and condition of creating of an
open religious identity of youth was presented by the author in the perspective of
the current social situation, rather unfavourable towards activities in the field of
religion especially bearing traits of the openness to the Otherness. Such a situation
has been defined by the philosopher and poet Friedrich Hölderlin as the “destitute
time”. Therefore, the author has made this quote of Friedrich Hölderlin and Rainer
Rilke as necessary philosophical context of the reflection.
In a search of the complete overview and description of the open religious
identity and determinants of the process of its forming, the author focuses on the
selected questions such as religious fundamentalism, sense of self-sufficiency in
religious dimension, reflectivity and parrhesia which in in an essential way, positive
or negative, determine the discussed process
The Impact of a 1,2,3-Triazole Motif on the Photophysical Behavior of Non-K Tetrasubstituted Pyrene with a Substitution Pattern Providing the Long Axial Symmetry
No full text1,3,6,8-Tetrasubstituted pyrene derivatives with two types of substituents (4-(2,2-dimethyl
propyloxy)pyridine, 1-decyl-1,2,3-triazole, 1-benzyl-1,2,3-triazole, and pyrazole), substituted in such
a way that provides the long axial symmetry, are prepared and characterized in the present study.
To the best of our knowledge, the pyrene derivative containing the same heteroaryl motif (triazole)
but substituted by two various alkyls, straight decyl and benzyl-based side chains (C), is reported
for the first time. For comparison, compounds with one kind of triazole motif and substituted
pyridine or pyrazole groups were prepared (A and B). The photophysical properties of all molecules
were evaluated by thermogravimetric analysis (TGA) and UV-Vis spectroscopy (absorption and
emission spectra, quantum yields, and fluorescence lifetimes). The obtained results were compared
to analogues substituted at the 1,3,6,8 positions by one kind of substituent and also with all the
1,3,6,8-tetrasubstituted pyrenes reported in the literature substituted by two kinds of substituents
with a substitution pattern that provides long axial symmetry. In addition, theoretical studies based
on DFT and TD-DFT were performed that supported the interpretation of the experimental results.
The photophysical properties of tetrasubstituted pyrene derivatives having triazole units at the
1,8-positions, respectively, and other identical substituents at the 3,6 positions show the dominance of
triazole units in the pyrene framework; the dominance is even higher in the case of the substitution
of 1,3,6,8 positions by triazoles, but containing two various alkyls
Pionowy świat i góry na opak, czyli autobiografia na cztery ręce Olgi i Piotra Morawskich
No full textThe article presents an interpretation
of Od początku do końca (From Beginning
to End), a book written by Olga
Morawska and Piotr Morawski. The
work contains a Himalayan climber’s
2001–2009 diary covering, among
others, expeditions to K2, Annapurna
and Dhaulagiri, as well as his
wife’s memoir written after his death.
A combination of two perspectives
and two narratives, of the climber and
his life companion, makes the book
stand out from the genre of Himalayan
climbing accounts – for literary
reasons and owing to its focus
on human relationships (intersubjectivity).
Nevertheless, a focus on space,
a staple of the genre, is strong
in this book as well. Consequently,
the analysis of the climber’s notes
points to a sensual topography: a record
of direct experience of mountains.
Morawska’s memoir, in turn,
is permeated with spatial metaphors
(of life as a journey) and brings grief
to the fore
Multi-method geophysical mapping of ground properties and periglacial geomorphology in Hans Glacier forefield, SW Spitsbergen
No full textThis article presents the results of a geophysical survey from which detailed images of glacial and periglacial landforms and subsurface structures were obtained. Sediments and landforms on newly deglaciated terrain can be used to reconstruct the extent and character of glaciers in the past and add to the understanding of their response to climate and environmental changes. To derive spatial information from complex geomorphological terrain, joint interpretation of three non-intrusive geophysical methods were applied: Electrical Resistivity Tomography (ERT), Ground Penetrating Radar (GPR), and time-lapse Seismic Tomography. These were used to identify subsurface structures in the forefield of the retreating Hans Glacier in SW Spitsbergen, Svalbard. Three main zones were distinguished and described: outwash plain, terminal moraine from the last glacial maximum, and glacial forefield proximal to the glacier front. Geophysical profiles across these zones reveal information on glacio-fluvial sediment thickness and structure, ice thickness and structure, and bedrock topography. The freezing-thawing effect of the active layer has a strong and deep impact, as demonstrated by variations in P-wave velocity in the obtained outcomes. The results are discussed in the context of the current climate in Svalbard. This study provides a snapshot of ground parameters and the current state of the subsurface in southern Spitsbergen. The boundary between sediment-bedrock layers was estimated to be from 5 to 20 m in depth. It is the first such extensive description of periglacial structures in the forefield of the Hans Glacier, utilising the longest ERT profile (1500 m) in Svalbard together with deep GPR and precise seismic tomography
Muscimol hydration and vibrational spectroscopy – The impact of explicit and implicit water
No full textThe presented study focuses on the interaction of the well-known neurotoxin muscimol with water. Two approaches for the water solvent are applied – the explicit and the implicit. The muscimol-water clusters were obtained by the molecular dynamics simulations and the first solvation shell was kept for further studies. Implicit water was mimicked via the polarized continuum model (PCM). All three tautomeric forms of the free muscimol molecule are considered in the calculations. The combined theoretical and experimental vibrational IR and Raman studies determined the stability of the prevailing zwitterion form in water. We proved that water molecules in the first solvation shell are crucial for the correct prediction of structural and spectroscopic parameters of muscimol due to its ability to form strong hydrogen bonds. We believe that our findings will shed some light on the binding preferences of muscimol with the γ-aminobutyric acid (GABA) receptor
Literatura rosyjsko-izraelska i jej mitotwórczy potencjał
No full textThe text is a review of Roman Katsman’s monograph, entitled Vysshaya legkost’sozidaniya. Sleduyushchiye sto let russko-izrail’skoy literatury (Boston–St. Petersburg: Academic Studies Press–BiblioRossica, 2021). This is a continuation of his research included in the previous book, Neulovimaya real’nost’. Sto let russko-izrail’skoy literatury (1920–2020) (Boston–St. Petersburg: Academic Studies Press–BiblioRossica, 2020). Katsman steps back from perceiving Russian-Israeli literature as a part of Russian literature and describing it only in contexts and connections related to Russian culture. The recognition of such literary autonomy requires a separate research method, tools and conceptual apparatus. In his book from 2020, Katsman presents a philosophical and cultural paradigm, which aims to define the perspective of Russian-Israeli literature; in the other monograph, he supplements this paradigm with the myth-creating potential contained in this literature
Soba Expedition: The preliminary report on the season of fieldwork conducted in 2021-2022
No full textAt the end of 2018 the Polish Centre of Mediterranean Archaeology, University of Warsaw, applied for a research concession in Soba East. The request was accepted and the boundaries of the area have been set
(Fig. 1). At the same time the National Science Centre in Poland accepted a project proposal based on agreement no UMO-2018/29/B/HS3/02533. The project was entitled Soba – the heart of Alwa. Spatial organisation of the capital city on the Blue Nile. The project introduced a new approach
to study the urban plan of the city (Drzewiecki, Ryndziewicz 2019) (Fragment tekstu)