The research involved coal from 11 coal mines in the USCB in Poland, intended for combustion in power plants and for home furnaces. It has been stated that the content of As, Cd, Co, Cr, Cu, Mo, Ni, Pb, Sb and Zn in the ash of coal fines from the USCB with a density of <1.30 × 103 kg/m3 is the largest, and in the ash fraction with a density >2.00 × 103 kg/m3 is the smallest The fraction ash of coal fine with a density> 2.00 × 103 kg/m3 has the greatest impact on the content of As, Cd, Co, Cr, Mo, Pb and Zn in whole coal fines from the USCB. In turn, the largest impact on the content of Cu, Ni and Sb in whole fine coal ash has the fraction of coal fine having a density of 1.60–2.00 × 103 kg/m3 (for Cu) and fraction with a density <1.35 × 103 kg/m3 (Ni and Sb). The main carriers of elements in fine coal ash, thus in future furnace waste, are the grains of aluminosilicates and iron oxides resulting from the combustion of probably fusinite and semifusinite and the combustion of adhesions of these macerals with dolomite, ankerite and pyrite. The purification of fine coal from the matter with a density >2.00 × 103 kg/m3 may reduce the sulfur content (by 40%), the content of main element oxides (from 33% to 85%) and the content of ecotoxic elements (from 7% to 59%) in fine coal ash, i.e. in potential furnace wastes. Due to the small content of mineral matter, ash and sulfur in coal, small content of Al, Fe, Ca, Mg, Na, K, P oxides and high content of SiO2 in coal ash, low value of the Rogi sinterability index, small inclination of coal fine to slag the furnaces and boiler fouling by sludge, the investigated coal was favorable for technological reasons, fuel in power plants and for home furnaces

Following G. Bellmann, the article divides the German loanwords in Czech and Slovak roughly into two groups, namely those lexical units that represent a basic code extension (= type A) and those that are used immediately after adoption as (approximately) synonymous lexical duplicates of already existing designations (= type B). While type A words have the best chances of lasting integration, type B words elicit a competitive situation between old and new designations, which can result in substitution, negative integration or semantic diversification. Furthermore, the paper deals with idiosyncrasies of German loanword integration such as the expressiveness of German loanwords in Czech and Slovak and the emotional attitude towards German loanwords in those languages. The article also discusses the causality of displacement and substitution of German loanwords, subsequently elaborates on the loss of terms and realities, the change in domain-specific language use, the role of language awareness and language culture, the loss of immediate contact areas as well as the question of prestige, and concludes with an outlook on future developments.

Joseph Ratzinger warns about a multitude of trials to superficially undertake the subject of religion. In this diverse world of religion, he sees some common points. The first step in the history of religion was to transcend the primitive, moving into myth. Second, most important step, was to leave the myth behind. This leaving is threefold – which is represented by three irreducible shapes of religion: the identity mysticism, the monotheistic revolution and the enlightenment. An expression of the first two are, respectively: the identity mysticism and the personal love mysticism. The fact that religions are affecting each other must not be omitted, either. The place of Christianity in the history of religion – nota bene gained by both, the dialogue with other religions and standing against them – defines standing with the God of faith and the God of the philosophers, and the decisive choice of faith and mind together with the truth and the cult. In his thoughts concerning the dialogue of religions, J. Ratzinger points out two types: the mystical and theist, of the religion. Along them walks as a temptation the pragmatic type, in which the question about the truth is ignored. The result of the dialogue of the religions will not be a unification of all religions. In this dialogue, the truth cannot be ignored. At last, it cannot be forgotten that there is a religio vera, and that it is Christianity.

Solar photovoltaic power is widely utilized in the energy industry. The performance of solar panels is influenced by different variables, including solar radiation, temperature, wind speed, relative humidity and the presence of haze or dirt. Outdoor solar panels are particularly susceptible to a decrease in energy efficiency due to the accumulation of dust particles in the air, which occurs as a result of natural weather conditions. The extent of dust deposition is primarily determined by factors such as the tilt angle of the panel, wind direction, cleaning frequency as well as local meteorological and geographical conditions. The dust on the solar cell glazing reduces the optical transmittance of the light beam, causing shadowing and diminishing the energy conversion productivity of the panels. Sand storms, pollution levels and snow accumulations all significantly impact the photovoltaic panel performance. These circumstances reduce the efficiency of solar panels. The experiment was carried out on two identical dust-accumulated and dust-free panels. The evaluation was carried out in two different situations on the offgrid stand-alone system: in a simulated atmosphere and in an open space during the day. The current-voltage curves have been developed for both panels at various tilt degrees. The features provide sufficient information to analyse the performance of the panels under consideration. The measurements demonstrate that as dust collects on the panel’s surface, the average output power and short circuit current decrease dramatically. The installation tilt angle affected the ratio of efficiency and average power outputs of dusty and clean panels.

Euphausia superba and E. crystallorophias were the dominant species in the area studied, Thysanoessa macrura, E. jrigida and E. triacantha were also present. The abundance of krill was changing during the year; minimum occurred between March and August and maxima between December and February and from September till November. Age structure of three most frequently occurring species showed seasonal variations. The periods of development and Reproduction were different for T. macrura, E. erystallorophias and E. superba.