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Number of results: 19
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Abstract

The subject matter of this article constitutes the semiotic mapping of human of knowledge which results from cognition. Departing from the presentation of human subjects as world-model-builders, it places epistemology among the sciences of science and the sciences of man. As such the understanding of epistemology is referred either to a static state of knowledge or to a dynamic acquisition of knowledge by cognizing subjects. The point of arrival, in the conclusive part of a this article, constitutes the substantiation of the two understandings of epistemology, specified, firstly, as a set of investigative perspectives, which the subject of science has at his/her disposal as a knower on the metascientific level, or, secondly, as a psychophysiological endowment of a cognizing subject who possesses the ability of learning and/or knowing a certain kind of information about cognized reality.

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Authors and Affiliations

Zdzisław Wąsik
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Abstract

This paper aims at elaborating the concept of linguistic self with regard to its twofold existence modes, namely as a physical person and as a mental subject, being shaped by external and internal dialogs in interpersonal and intersubjective communication. These dialogical encounters, constantly changing the reality of everyday life, are based, on the one hand, on the observable multitextuality of narratives, and on the other, on the multi-voicedness of opinions. As such, it lays emphasis on the need for a holistic approach to human beings as a psychosomatic unity, taking part in cognition with their minds and bodies, and developing itself both in-and-with the physical and logical domains of their surrounding ecosystems. In view of the private and public character of the self, the author postulates to consider in future studies the achievements of personal and social constructivism.

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Authors and Affiliations

Elżbieta Magdalena Wąsik
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Abstract

In this paper, the influence of Mo addition on the structure and mechanical properties of the NiCoMnIn alloys have been studied. Series of polycrystalline NiCoMnIn alloys containing from 0 to 5 mas.% of Mo were produced by the arc melting technique. For the alloys containing Mo, two-phase microstructure was observed. Mo-rich precipitates were distributed randomly in the matrix. The relative volume fraction of the precipitates depends on the Mo content. The numbers of the Mo rich precipitates increases with the Mo contents. The structures of the phases were determined by the TEM. The mechanical properties of the alloys are strongly affected by Mo addition contents. Brittleness of the alloys increases with the Mo contents.

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Authors and Affiliations

K. Prusik
E. Matyja
M. Wąsik
M. Zubko
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Abstract

Constantly increasing prevalence of allergic diseases determines the attempts to elaborate the therapeutic strategies activating immune tolerance to particular allergen. Our current research focuses on the antigen-specifi c action of CD8+ suppressor T (Ts) lymphocytes induced in mice by intravenous administration of a high dose of haptenated syngeneic erythrocytes. While the regulatory activity of Ts cells mediated by exosome-delivered miRNA-150 is well defi ned, the mechanism of their induction remained unclear. Th erefore, the current studies investigated the immune eff ects induced in mice by intravenous administration of contact allergens coupled to syngeneic erythrocytes. In mouse models of hapten-induced contact hypersensitivity (CHS) and delayed-type hypersensitivity to ovalbumin, we have shown that intravenous administration of hapten-coupled erythrocytes failed to induce CHS effector cells. Moreover, hapten-induced CHS reaction occurred to be suppressed in mice intravenously administered with syngeneic erythrocytes coupled with protein allergen. Finally, we have demonstrated that intravenously administered allergen induces immune tolerance only when bound to syngeneic erythrocytes, proving that intravenously delivered allergens are deprived of their immunizing properties when coupled with membrane of self cells. Altogether, our current studies suggest that alteration of self cell membrane by allergen binding is enough to induce Ts cell-mediated immune tolerance to nonpathogenic agents, which express a great translational potential in such conditions as allergies and hypersensitivity-related autoimmune disorders.

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Authors and Affiliations

Katarzyna Nazimek
Magdalena Wąsik
Philip W. Askenase
Krzysztof Bryniarski
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Abstract

The results from a hydrological monitoring program of Breelva basin (Spitsbergen, Svalbard) have been analysed to improve the understanding of the Werenskiöld Glacier system’s functioning in the High Arctic. Hydrographs of a 44 km 2 river basin (27 km 2 of which was covered by a glacier) were analysed for the period 2007–2012. Seasonal discharge fluctuations were linked to glacier ablation and meteorological parameters, including atmospheric circulation types. A dichotomy was found in the discharge peaks generation during the hydrologically active season, with the main role played by snow and ice melt events during its first part and the rainfall regime dominating its second part. Foehn type strong winds played a significant role in the generation of ablation type floods ( e.g. in August 2011). A simple classification of the runoff regime was applied to the examined six−year period, resulting in the identification of its three types: the ablation type (dominant in 2007 and 2009), the rainfall type (in the years 2011–2012), and the mixed type (during 2008 and 2010). According to publications the river flow season in Spitsbergen begins in June and end with freeze−up in September or at the beginning of October. Recently, this season for Breelva tend to be extended with the mid−May onset and end in the second part of October. A multiannual trend was noted that reflects a growing importance of rainfalls, especially in September. Rainfall waters play a more distinct role in outflow from the Breelva catchment recently.
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Authors and Affiliations

Elżbieta Majchrowska
Jacek Jania
Dariusz Ignatiuk
Henryk Marszałek
Mirosław Wąsik
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Abstract

The paper presents the results of hydrogeological parameters determination carried out in the area of the Muschelkalk outcrop (Middle Triassic) near Tarnów Opolski. The studies consisted of a short pumping test in 16 piezometers and then their flooding and observation of water table recovery after the stopping of the pumping. The test allowed the values of hydraulic conductivity and specific capacity of Muschelkalk layers ranging from 8.56 · 10–8 m/s to 3.63 · 10–3 m/s and from 0.0075 to 128 m3/h/1mS, respectively, to be calculated. The wide range of values is related to the fact of studying the layers characterized by high permeability and water-bearing capacity (Karchowice Beds, Diplopora Beds and Górażdże Beds) as well as layers with low permeability (Gogolin Beds). The dense network of the research points made it possible to demonstrate the surface variability of rocks permeability and water- bearing capacity, determined mostly by the direction of outcrops of individual layers. The results of the conducted studies show that the most water-bearing zone of the area is related to the carbonate rocks of the Karchowice, Diplopora and Górażdże Beds, characterized by the highest values of hydraulic conductivity k (above 2 · 10–4 m/s) and specific capacity q (above 15 m3/h/1mS), in the belt stretching latitudinally through Kosorowice–Otmice. The studied area can be considered a Polish limestone-concrete field where several mines exploiting Muschelkalk carbonate rocks operate. The results of the conducted studies may be useful for the correct prognosis of the groundwater inflow either to already existing quarries or newly designed mines within the Major Groundwater Basins.

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Authors and Affiliations

Mirosław Wąsik
ORCID: ORCID
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Abstract

The objective of this work is to demonstrate for the first time the results of hydrogeochmical studies carried out in the Steinvik River catchment, in order to provide detailed information regarding the chemical composition of groundwater in the Hornsund region, SW Spitsbergen. The water chemistry in the non-glaciated Steinvik River catchment is largely controlled by hydrological processes related to thaw of the near surface permafrost. Groundwater runoff is generated from the fast flow through well-permeable active layer. Recharge from melting snow, permafrost and rain, together with short residence time of groundwater, favors the forming of low-mineralized water, reaching 41 and 50 μS/cm for surface and groundwater, respectively, with the dominance of HCO3−, Cl−, Mg2+, Ca2+ and Na+ ions. In some water samples, increased concentrations of aluminum (up to 268 μg/L ) were found. The highest concentrations of phosphate, nitrite and ammonium in water seem to be related to the presence of bird colonies. Groundwater of active layer in the studied catchment belongs to young meteoric water with the age limited to one summer season.
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Authors and Affiliations

Michał Rysiukiewicz
1
ORCID: ORCID
Henryk Marszałek
1
ORCID: ORCID
Mirosław Wąsik
1
ORCID: ORCID

  1. Department of Applied Hydrogeology, Institute of Geological Sciences, Wrocław University, Pl. Maksa Borna 9, 50-204 Wrocław, Poland
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Abstract

This paper presents the permeability of the permafrost active layer determined in the Brattegg River catchment (SW Spitsbergen) for the 6-years interval of 2005–2010. The field permeability measurements technique of weathered rocks on various geomorphological forms allows to assess the value of their hydraulic conductivity ( k). High variability of k values, ranging from 6.37 10 −9 to 4.0 10 −3 m s −1, indicates the permeability of rocks from very low in clay to very high in gravel-rock rubble. Among the geomorphological forms, the best permeability was observed in boulder covers and rock debris, and the lowest one in patterned ground. The obtained results were used to determine the groundwater runoff ( q), assuming the unit thickness of the active layer aquifer. The q value from the Brattegg River catchment was calculated at 130 L s−1, which is from 15% to 47% of the average surface runoff.
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Authors and Affiliations

Mirosław Wąsik
1
ORCID: ORCID
Henryk Marszałek
1
ORCID: ORCID
Michał Rysiukiewicz
1
ORCID: ORCID

  1. Institute of Geological Sciences, Department of Applied Hydrogeology, Wrocław University, Plac M. Borna 9, 50-204 Wrocław, Poland
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Abstract

The article shows the effect of the supply pressure of fog nozzles on the process of ammonia sorption. In the tests, the nozzles flow characteristics Q=f(p) and the dependence of NH3 concentration as a function of the water stream feeding in time at different supply pressures were determined. For the TF 6 NN, TF 6 V, NF 15, CW 50 nozzles, measurements were carried out at the following supply pressures: 0.1 MPa; 0.2MPa; 0.3MPa; 0.4MPa; 0.5MPa. It was observed that the greatest effect of nozzle feed pressure on ammonia sorption efficiency may be expected at lower pressure values. At higher values, the sorption rate becomes stabilized and even starts to decrease. The decreases in the sorption rate constant observed for higher pressures may be due to a reduction contact time of the droplet and the achievement of the critical mixing rate of ammonia vapors in the air intensively saturated with water streams. This is due to diffusion rate limitations. The measurements show that the use of supply pressures for fog nozzles above 0.4 MPa is not justified. It should be noted that varying the feed pressure of nozzles of various designs can affect their ammonia sorption efficiency differently. The type of nozzle and supply pressure affects the distribution of droplets in space. The angle of dispersion and the shape of the generated jet have a critical influence on the efficiency of the sorption process. Complete filling of the space and a large spray angle assure relatively high sorption efficiency.
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Authors and Affiliations

Wiktor Wąsik
1
ORCID: ORCID
Małgorzata Majder-Łopatka
1
ORCID: ORCID
Wioletta Rogula-Kozłowska
1
ORCID: ORCID
Tomasz Węsierski
1
ORCID: ORCID

  1. The Main School of Fire Service, Warsaw, Poland

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