Rachunkowość, finanse oraz metody ilościowe w zarządzaniu: wybrane problemy

Praca recenzowana / peer-reviewed pape

Influence of Rainfall Events and Surface Inclination on Overland and Subsurface Runoff Formation on Low-Permeable Soil

This paper presents the results of laboratory tests that allowed us to determine the effect of the soil surface inclination and its initial moisture content on the formation of overland and subsurface runoff. The experiments were carried out for the soil that is commonly present in the southern part of Poland, including the Outer Carpathians. The results of these measurements served as a reference for overland runoff calculations using the Richards model, simplified Green–Ampt model, and the empirical model (MSME). The results of the measurements showed that, for low-permeable soil, overland runoff is the dominant form. It was shown that a slope in the range of 2.5–5.0% does not have a significant effect on the amount of overland runoff, but affects its dynamics. The measurements also showed that the starting time and amount of overland runoff are strictly associated with the initial soil moisture content. High soil moisture content in the period preceding the onset of rainfall causes faster generation and an increase in overland runoff, which is caused by the saturation of the surface layer of the soil. This mechanism was confirmed by the results of calculations using the Richards model and measurements of the electrical resistance of the soil. Theoretical calculations showed that the results of the runoff calculations using the Richards and Green–Ampt models are strongly dependent on the hydraulic properties of the soil adopted for the analysis. It was also demonstrated that the modified MSME model satisfactorily estimates the amount of overland and subsurface runoff, but requires parameter calibration based on existing hydrological data

Functional Hybrid Materials Based on Manganese Dioxide and Lignin Activated by Ionic Liquids and Their Application in the Production of Lithium Ion Batteries

Kraft lignin (KL) was activated using selected ionic liquids (ILs). The activated form of the biopolymer, due to the presence of carbonyl groups, can be used in electrochemical tests. To increase the application potential of the system in electrochemistry, activated lignin forms were combined with manganese dioxide, and the most important physicochemical and morphological-microstructural properties of the novel, functional hybrid systems were determined using Fourier transform infrared spectroscopy (FTIR), elemental analysis (EA), scanning electron microscopy (SEM), zeta potential analysis, thermal stability (TGA/DTG) and porous structure analysis. An investigation was also made of the practical application of the hybrid materials in the production of lithium ion batteries. The capacity of the anode (MnO2/activated lignin), working at a low current regime of 50 mA·g−1, was ca. 610 mAh·g−1, while a current of 1000 mA·g−1 resulted in a capacity of 570 mAh·g−1. Superior cyclic stability and rate capability indicate that this may be a promising electrode material for use in high-performance lithium ion batteries

Management tools in the face of crisis: selected aspects

Praca recenzowana / peer-reviewed pape

Państwo i Społeczeństwo nr 3, 2009 : Prawo publiczne - zagadnienia wybrane

Oddawany do rąk Czytelników numer „Państwa i Społeczeństwa” poświęcony jest szeroko rozumianej problematyce publicznoprawnej. Choć publikowane artykuły w większości mieszczą się w obrębie dogmatyki poszczególnych gałęzi prawa, celem zbioru jako całości jest naszkicowanie powiązań i problemów typowych dla sfery prawa publicznego − przy zastrzeżeniach co do zasadności posłużenia się tym pojęciem. Z tej perspektywy proponowany wybór tekstów pozwala uchwycić niektóre z żywych zależności łączących zagadnienia typowe dla administracji rządowej i samorządowej, sfery finansów publicznych, prawa karnego, konstytucyjnego, a także prawa procesowego, ze szczególnym uwzględnieniem procedury administracyjnej i cywilnej