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Number of results: 9
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Abstract

Average duration of a thermal winter in Hornsund has been determined for 216 days. Average soil temperature at depth of 5 cm in winter is equal —9.8°C. During a spring that lasts 35 days only, soil temperatures at depth of 5 cm indicate distribution nearest to a normal one. Soil temperature distribution in winter substantially differs from the one in spring.

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Authors and Affiliations

Mirosław Miętus
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Abstract

The article presents a review of the researches on sea and atmospheric physics conducted by the Polish expeditions in Antarctica from 1977 to 1990.

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Henryk Gurgul
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Abstract

Power production is the largest source of emissions of anthropogenic carbon dioxide. The main fuels in Poland are solid fuels - hard coal and lignite. Their combustion produces large quantities of waste, primarily fly ash. The ashes from lignite, due to the chemical and phase composition, and thus their properties, have - so far - limited economic use. Among their possible applications is the use of mineral sequestration of carbon dioxide - this is the result of their relatively high content of active CaO and MgO, which can react with carbon dioxide in aqueous suspensions. The paper presents maximum theoretical capacity of CO2 bonding for examined fly ashes and the results of the research on absorption of CO2 by the ash-water suspensions from fly ash resulting from the combustion of lignite from Pątnów and Turów power plants. Calculated for the examined fly ashes maximum theoretical capacity of CO2 bonding amounted to 14% for the ashes from Pątnów power plant and 14.4% for the fly ashes from Turów power plant. Studies have shown that most CO2 - 8.15 g/100 g of ash, was absorbed by suspension with ashes from Turów power plant with a mass ratio of ash to water of at 0.8:1. In the case of ash from Pątnów power plant absorption was lower and amounted to a maximum - 8.7 g CO2/100 g ash. The largest increase CO2 absorption was observed in the first 30 minutes of carbonation in the suspensions of fly ash from Pątnów power plant and the first 15 minutes in suspensions of fly ash from Turów power plant. After this time, the absorption has increased slowly. An increase in temperature in the chamber system, confirming the occurrence of the process of carbonation and its endothermic character. The highest temperature - 44.8 C recorded in the suspension with ashes from Turów power plant, which has also the greatest absorption of CO2. The results confirm the usefulness of these ashes to sequester carbon dioxide.

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Authors and Affiliations

Alicja Uliasz-Bocheńczyk
Marek Gawlicki
Radosław Pomykała
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Abstract

A series of nanocomposite graphene/CoFe2O4 and graphene/NiFe2O4 hybrid materials was synthesized via facile, one-pot solvothermal route. The materials were obtained using two pressure methods: synthesis in the autoclave and synthesis in the microwave solvothermal reactor. The use of a microwave reactor enabled to significantly shorten the synthesis time up to 15 min. All the syntheses were carried out in a solution of ethanol. The effect of processing conditions and composite composition on the physicochemical properties and electric conductivity was studied. The specific surface area, density, morphology, phase composition, thermal properties and electric conductivity of the obtained composites were investigated. The results of studies of composites obtained in an autoclave and in a microwave reactor were compared.

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Authors and Affiliations

A. Jędrzejewska
D. Sibera
R. Pełech
R. Jędrzejewski
U. Narkiewicz
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Abstract

In the collection of articles by Peter Strawson published in his Analysis and metaphysics the author defines his meta-philosophical position by offering two analogies, relating respectively to philosophy conceived as therapy and to philosophy construed as a grammar of thought. These analogies, if they are viewed in a perspective invoked by reflections on ‘the human condition’ – admittedly, a style of investigation fairly remote form analytic research – open several interesting questions and raise puzzling uncertainties. If we follow some implications of these queries, the general position of Strawson in contemporary philosophy becomes more convincing; it fits quite comfortably in the ‘mainstream philosophy’, and highlights some leading topics in the eternal philosophical agenda.

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Authors and Affiliations

Damian Leszczyński
ORCID: ORCID
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Abstract

At the end of the Golden Age, how did a prose writer from Madrid use comedy to achieve the didactic, moralizing and religious project of his fiction works? When the Spanish novel was in crisis, Francisco Santos pleased a devout readership by using some of the clichés of popular and literary satire.
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Authors and Affiliations

Alain Tourneur
1
ORCID: ORCID

  1. Universidad de Lille

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