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Large layers of carbonate rocks in Opole region for years serve as an exploitation material for the cement-lime industry. The mining results in numerous post-exploitation reservoirs, which biocenosis is poorly known. The objective of the study was to determine the effect of the environmental features on the distribution of macroinvertebrates and the community structure, and to present the significance...
The aim of this work was to evaluate the effectiveness of a single flurprimidol foliar spray on growth, flowering, transpiration rate and stomatal conductance of medium height chrysanthemums “Kodiak” and “Jewel Time”, grown in pots. Flurprimidol applied once, as a foliar spray, at concentrations of 7.5, 15 or 22.5 mg dm⁻³ was effective in reducing stem extension without adverse side-effects. The degree...
The following list contains 292 taxa of vascular plants found in the upper part of the Grabianka river valley in the Elbląg Plateau Landscape Park. Among them, 12 species are protected by law and 6 species are considered to be endangered in Poland. Several interesting and rare taxa were recorded, including Aconitum variegatum, Campanula latifolia, Epipactis purpurata, Gagea spathacea, and Centaurea...
This paper presents the results of lichenological studies carried out during the XXV Meeting of Polish Lichenologists which took place in „Swajnie” – the Special Area of Conservation of NATURA 2000. The objective of the studies was to investigate species diversity and the habitat preferences of lichens and lichenicolous fungi. The studies resulted in the identification of 177 species, including 153...
The paper discusses the impact of the C/N ratio of inorganic carbon (KHCO₃) and its interaction with carbon dioxide liberated by the oxygenation of a carbon electrode and with gaseous hydrogen produced by water electrolysis, on the concentration of oxygenated forms of nitrogen, during the process of autotrophic denitrification in a multi-catode reactor with immobilized biofilm. The experiment was...
Environmental and economic factors related to water exploitation have resulted in the development of recirculation techniques by trout fish farms. This study assesses the influence of farming technology on the content of dry matter in rainbow trout (Oncorhynchus mykiss Walbaum) muscles. Farming technology did not influence the dry matter content: mean content amounted to 25.7% in muscle tissue of...
The study was aimed at determining changes in properties of CMC solutions over different storage times. Rheometric analyses were made for solutions with CMC concentrations 1%, 2%, 3%, 4% and stored between 24 and 120 hours. Courses of the flow curves were described by Ostwald-de Waele (O-dW), Herschel-Bulkley (H-B), Casson and Ellis models. The study showed that the best fitting of the curve to measuring...
Fermented tea broth (known as Kombucha) has been used for ages in many countries, especially in Japan, Russia, China and Eastern Europe. Nowadays, this beverage is generally regarded a universal natural medicament having a strengthening effect on the human body. Kombucha beverage is popular because of its favourable effect on human health. Its composition includes: B vitamins, C vitamin, mineral components...
Transportation services can be evaluated from the perspective of a number of criteria. One aspect of the evaluation is the competitiveness of companies who provide the services. The most important factors determining the level of competitiveness of enterprises are discussed in reference books, while there are no tests determining their hierarchy of importance and their assessment for companies associated...
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