The article presents a part of the research on the Russian and Polish lexical units containing the глуп-/głup- root. The noun, verb and adverb forms have been analysed from the point of view of their meanings and the functional, stylistic and derivational properties. That is why the research material includes the contemporary units such as colloquialisms and lexemes of the restricted usage (archaisms and linguistic variants) which occur in both languages. The lexical units have been selected from the contemporary and historical explanatory and etymological dictionaries as well as from the former and dialectal lexis.

A sediment core, 350 cm long recovered from Młynek Lake, northern of Poland (Warmia and Masuria Region) was analyzed with respect to their content of diatoms and chrysophyte cysts. The aim was to reconstruct the lake water level and climatic changes during the past 2500 years. The recognized diatom assemblages displayed marked floristic changes along the sediment core samples. The main change in diatom composition consists of a shift from an assemblage dominated by benthic Fragilaria sensu lato species through marked intervals to a planktonic one in distinct zones. A high proportion of benthic to plankton taxa has been reported as indicative for a lowering of the lake level with long ice cover in a cold dry climate and a shift from benthic to planktonic diatom taxa reflects arising water level with longest growing season and reduced ice cover on the lake during a warm wet climate. Multivariate statistical analysis included hierarchical ascending clustering distinguished four diatom ecological groups. The analyzed core section was divided into 11 diatom zones according to a distribution of ecological groups and variation in abundance of dominant species supported by 14C data. The results displayed a developmental history of the Młynek Lake that can be divided into 6 main phases of alternating warm wet and cold dry shifts. A distinct dominance of planktonic eutrophic indicator diatoms accompanied by a low abundance of chrysophyte cysts indicates increased lake trophicity and a general trend for the increasing anthropogenic impact.

The paper proposes a study of molecular interactions using the planetary model of the atomic structure. The description refers to transfer of the interactions by electrons bonded with an atom in a planetary system. In molecules we refer to analysis of electrons that remain unpaired during the formation of chemical compounds. The planetary electronic state of molecular interactions is defined by considering the action arm for interatomic forces. Then the interaction torque is defined. The problem is studied in a collection of atoms forming a nanoparticle and then analysis is carried on in the entire volume of the nanocomposite, which is defined as a set of the nanoparticles in a field of matrix-nanofiller interactions. As a result, new mechanical, magnetic, and optical properties of the nanocomposite arise and are described herein. The atomic-scale phenomena are described by both classical and quantum mechanics and are then transferred to the nanoparticle scale by applying statistical mechanics. The quantum solutions for the optically active electrons form the basis for the optical properties of the nanocomposite using forced gyrobirefringence and Maxwell equations. The results of the theoretical analysis are confirmed by experiment using an electron paramagnetic resonance spectrometer.

Since modern usage of the core terms is essential in the appropriate interpretation of ancient rhetoric texts, the paper starts from a discussion of semantic differences between the concepts of advice, counselling and deliberation in the Polish language. Ancient rhetoric takes as its starting point an overarching notion of ‘deliberative genre’ which includes not only laymen and expert advice, but also the political deliberation. It offers some theoretical categories, universal enough to address these apparently incompatible contexts of advice-giving and advice- taking. Rhetorical approach points out the relation between axiology and persuasive mechanisms. It identifies also some persuasive devices likely to enhance the efficiency of advice-giving, such as the use of examples and reasoning based on probability evaluation.