The chemical structures of AT2433-A1 (2), AT2433-A2 (3), AT2433-B1 (4) and AT2433-B2 (5) were elucidated by degradation and spectroscopic studies. Compounds 2-5 are disaccharides closely related to rebeccamycin. The aglycone in 2 and 3 was determined to be 6-N-methyl-11-chloro-5H-indolo[2,3-a]pyrolo[3,4-c]carbazole and in 4 and 5 it was determined to be 6-N-methyl-5H-indolo[2,3-a]pyrolo[3,4-c]c...

Equilibrium composition profiles (CPs) of epitaxial alloy quantum dots (QDs) are well established theoretically. However nonequilibrium CPs may occur experimentally. Using an atomistic-strain-model Monte Carlo simulation method, we demonstrate a striking correlation between the nonequilibrium CPs of QDs and the kinetic growth mode: the layer-by-layer growth (LG) and faceted growth (FG) form a c...

E. Olejnik, A. Janas, B. Grabowska, M. Kawalec, AGH University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland Casting technology was applied and research was carried out on two alloys based on the Ni3Al phase with variable carbon content of 0,2 and 1,25 wt. % C, respectively. Resistance to abrasive wear, friction coeffi cient and Vickers microhardness were determined....

M. Górny, R. Dańko, M. Holtzer. AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland This article addresses the effect of mold filling and wall thickness on the flake graphite layer in ductile iron. The research was conducted for castings with different wall thickness (3-8 mm) and using molding sand with furan resin. A thermal analysis has been performed alon...

D. Wilk-Kołodziejczyk, S. Kluska-Nawarecka, The Foundry Research Institute, A. Opaliński, E. Nawarecki, AGH University of Science and Technology, Krakow, Poland The amount of information contained in the WEB grows in a galloping way, which is caused by the spread of Internet access and lowering the cost of storing and sharing data across the network. The vast amount of data, impossible to be an...

Department of Mineralogy, Petrography and Geochemistry is the oldest Earth science department at the AGH University of Science and Technology. It was created in 1919 as one of the first six departments of the Academy of Mining and was initially named as the Department of Mineralogy and Petrography. The Department was organized by Professor Józef Morozewicz (1865–1941) who chaired the Organizing...

The present study aims at presenting the impact of manual diaphragm relaxation therapy on voice emission tested in an anechoic chamber and changes body posture during singing using Zebris posturographic pedobarographic platform. A pilot three cases has been conducted (patient 1 – male aged 21, student 2nd year Academy Music Krakow, patient 2 34, with more than 25 years choral advanced musical e...

The paper presents software for baseline formation in acquisition and automated interpretation of electrocardiograms for students of the "Electronic Equipment" specialization, AGH. Special pressure has been put upon the educational values of the presented software, as it has ben designed as laboratory equipment. Despite, the implemented software solutions are representative for the development ...