Search

The urgency of the work. Potash salts are an important and needed resource. Its development is steadily increasing in view of the sufficient level of security and the growing need for the world economy. Production and processing of potassic salts lead to changes in the chemical composition of various components of the natural environment in the areas of deposits. In particular, these changes are typical for the aquatic component of ecosystems, which include groundwater zones of active water exchange. The purpose of the work is to determine a set of chemical tracer elements of the potash industry impact on the composition of the underground waters in the active water exchange zone. The characteristic of the sources of these elements in the aquatic environment is also the purpose of the present study. Research methodology. This paper summarizes data on the largest potash deposits in the world. The peculiarities of their genesis, methods of mining of ore deposits and their enrichment are described here. The work gives characteristics of the chemical composition of ores potash deposits, and waste potash production. It also gives the results of hydrochemical studies of groundwater in different regions of the extraction of potassium. Results. The analysis showed that the largest potash deposits in the world were characterized by a predominance of chloride salts. The main mineral component of the developed potash deposits in most cases is sylvin, carnallite and a group of sulphate minerals play a subordinate role. The predominant number of industrially developed potash ores is deposits of solid minerals of salts, which are produced by the mine method. Enrichment technologies are, in fact, represented by the two main methods: flotation method and chemical method. Summary. As a result of research, the complex of the chemical elements defining the direction of transformation of chemical composition of underground waters was allocated. This complex is divided into leading (Cl, Na, K) and secondary (S, Ca, Mg) macro components of salts subject to their role in the formation of potash ore composition, the ability to water migration and the danger to humans. The micro components of salts (halogen, alkaline and alkaline earth metals), as well as accessory micro components of salts (heavy metals, semi-metals and non-metals) are among these components.

Zugl.: Duisburg, Essen, Univ., Diss., 2011

Die Dissertation gibt einen Einblick in die Geschichte und den Ablauf der Rezeption des russischen Philosophen, Theologen und Dichters Vladimir Solov'ev (1853 - 1900) in Deutschland. Erforscht wird die Geschichte der Veröffentlichungen der Texte von und über Solov'ev. Außerdem wird die Beziehung von Wissenschaftlern und Nichtwissenschaftlern zum Werk des russischen Denkers im Lichte ihrer eigenen weltanschaulichen und wissenschaftlichen Positionen betrachtet. Die Ideen Vladimir Solov'evs wurden in Deutschland von den katholischen und evangelischen Theologen, von Philosophen, Historikern, Slawisten, von den Anthroposophen wahrgenommen. Neben der Einführung und dem Schlußteil besteht die Arbeit aus vier Teilen, die der Periodisierung der deutschen Rezeption Solov'evs entsprechen. Zum wichtigsten Ergebnis dieser Rezeption wurde die Deutsche Gesamtausgabe der Werke Solov'evs (1953 - 1980). Die Dissertation vereinigt Elemente der Historiographie (im Sinne der Geschichte der Geschichtswissenschaft) und der Ideengeschichte. Die Arbeit enthält eine Deutsche Solov'ev-Bibliographie, die sich vor allem mit den Veröffentlichungen von 1978 bis heute beschäftigt. The dissertation looks into the history and the development of the reception of the Russian philosopher, theologian and poet Vladimir Solovyov (1953 - 1900) in Germany. The history of publications of the texts of and about Solovyov is investigated. Furthermore, the relation of scholars and non-academics in regard to the works of the Russian philosopher is discussed in the light of theirs personal world-view and scientific positions. In Germany the ideas of Vladimir Solovyov were perceived by the Catholic and Protestant theologians, by philosophers, historians, slavonicists, by anthroposophists. This work consists in addition to introduction and conclusion of four parts. These parts correspond to the periods into which the reception in Germany is divided. The must importent result of this reception is the complete edition of the works of Solovyov in German (1953 - 1980). This Dissertation combines elements of historiography (as a history of history as academic discipline) and of the history of ideas. The work contains a German Solovyov-bibliography that deals in the first place with publications from 1978 until today.

Polarforschung