In the heterogeneous economic space, big cities are development poles that are usually characterized by the best conditions for running a business and the highest level and living conditions. Their role in development processes is the subject of many discussions. On 23 October 2017, at the invitation of the Mayor of Cracow, J. Majchrowski, an external Plenary meeting of the Committee for Spatial Development of the Polish National Academy of Sciences was held in Cracow, the aim of which was to discuss the role of big cities in Poland›s socio-economic development. This article presents the author›s opinions in a synthetic way, presenting the most important issues raised by him during the panel on the importance of Polish metropolises in shaping the development potential of the country and the region. In addition to the fundamental terminological and problematic discussion, the article describes the experience of Poznań as an agglomeration signifi cantly aff ecting the development of the region, formulating in the summary recommendations referring to the practice of regional policy.
Geological carbon dioxide storing should be carried out with the assumption that there are no leakages from the storage sites. However, regardless of whether the gas which is injected in leaks from the storage site or not, the carbon dioxide stored will influence the environment. In a tight storage site the carbon dioxide injected in will dissolve in the reservoir liquids (groundwater and oil) and react with the rocks of the storage formation. Dissolving CO2 in underground water will result in the change of its pH and chemism. The reactions with the rock matrix of the storage site will not only trigger changes in its mineralogical composition, but also in the petrophysical parameters, because of the precipitation and dissolution of minerals. A leakage of CO2 from its storage site can trigger off changes in the composition of soil air and groundwater, influence the development of plants, and in case of sudden and large leaks it will pose a threat for people and animals. Carbon dioxide can cause deterioration of the quality of drinking waters related to the rise in their mineralization (hardness) and the mobilization of heavymetals' cations. A higher content of this gas in soil leads to a greater acidity and negatively affects plants. A carbon dioxide concentration of ca. 20-30% is a critical value for plants above which they start to die. The influence of high concentrations of carbon dioxide on the human organism depends on the concentration of gas, exposure time and physiological factors. CO2 content in the air of up to 1.5% does not provoke any side effects in people. A concentration of over 3% has a number of negative effects, such as: higher respiratory rate, breathing difficulties, headaches, loss of consciousness. Concentrations higher than 30% lead to death after a few minutes. Underground microorganisms and fungi have a good tolerance to elevated and high concentrations of carbon dioxide. Among animals the best resistance is found in invertebrates, some rodents and birds.
In 2016 near Bornity (Braniewo district) a so far unknown stronghold was discovered. Within a small area the researchers unearthed a quarter of an early ̔Abbāsid dirham, a bronze spur with bent-in hooked extremities and a fragment of a ring of the Perm-Glazow-Duesminde type. In 2017 a preliminary small test excavation was carried out at the site. The discovered items and radiocarbon analysis of the charcoals from the rampart structure indicate that the site was in use in the last decades of the 9th century and the first quarter of the 10th century. Among the discovered artefacts the Arabic dirhams (two Hārūn ar-Rašīd’s dirhams and one al-Mahdī’s coin) deserve special attention and are discussed in detail in the article.
Galicia’s autonomous status was in fact a doubletrack affair. On the one hand Galicia became a shining example of freedom and autonomy, embedded in the new constitutional order of the Austro-Hungarian Empire, while on the other hand it was tied down to a monarchical absolutism which offered only limited protection of individual rights. The press in particular was caught in the dilemmas produced by this situation, especially in the sensitive areas of political loyalty and religion.
The paper outlines the Catholic and the Evangelical standpoint on the primate’s function served by the Bishop of Rome and its origin. The controversy revolves around the key phrase, iure divino and iure humano, which points to the divine or human origin of the primacy. In the Catholic perspective, Jesus Christ brought the Church into existence and provided this institution with permanent structural elements: primacy and apostolate. This thesis, considered an imperative of faith, is based on the texts of the Gospel which underscore the primacy of Saint Peter the Apostle among the Twelve and in the early Church. According to the Catholic ecclesiology, it was not only a private privilege enjoyed by Peter but a permanent element of the structure of the Church, which received the formal status of a dogma at the First Vatican Council. From the outset, the Reformation has assumed that primacy is an element shaped in the course of the historical development of the Church. The ecumenical dialogue between Catholicism and Lutheranism led to the establishment of a standpoint veering towards the consideration of the origin of primacy as a matter of lesser consequence. This step was taken in order to underscore the communal dimension of the Church, with its important function in unifying Christianity and presenting it to the world. The basic premise giving credence to this function is its foundation in the Gospel.