The paper presents the results of research on the impact of impurities in the feed ingots (master heat) on the precipitation of impurities in

the ATD thermal analysis probe castings. This impurities occur mostly inside shrinkage cavities and in interdendritic space. Additionally,

insufficient filtration of liquid alloy during pouring promotes the transfer of impurities into the casting. The technology of melting

superalloys in vacuum furnace prevents the removal of slag from the surface of molten metal. Because of that, the effective method of

quality assessment of feed ingots in order to evaluate the existence of impurities is needed. The effectiveness of ATD analysis in

evaluation of purity of feed ingots was researched. In addition the similarities of non-metallic inclusions in feed ingots and in castings

were observed.

The article presents how multi-layered urban lighting projects fit into the programs of integrated activities to improve the living conditions of the local community, the surrounding space, and its economic relations. The role of the electric lighting in revealing the night image of the city, its promotion and public spaces transformations offering new impressions to city residents is growing thanks to the use of the SSL technology. The authors focus on a role of outdoor lighting projects in urban regeneration within the selected urban areas. The paper describes how conscious shaping of lighting by analysing the goals and stages of the project can contribute to the improvement of quality in the processes of renewal of degraded urban areas.

In the Polish spatial planning law one of basic principles is to preserve spatial order. However, the analysis of the law and its implementation show, that instead of spatial order, overall circumstances promote disorder. The analysis covers the law adopted in 2018, which aimed at boosting the development of housing. Findings show, that the new law may rather promote chaos in urban space. One of the drawbacks is undermining of the spatial order by creating the possibility of adopting resolutions pertaining to housing and accompanying services, that are contradictory to provisions of master plans.

On September 16, 2019, prof. dr hab. Janusz Haman, member of the Polish Academy of Sciences passed away. The death of the Professor is a great loss not only for the family, but also for the entire national scientific community of agricultural engineering – the discipline of which he was the creator in Poland, and at the same time one of the greatest authority on an international scale. He has worked for almost 20 years at the Central Qualification Committee for Scientific Personnel (formerly CKK) at the Prime Minister’s office. For three terms he was a member of the Main Council of Science and Higher Education and the State Awards Commission. For two terms he was a member of the Science and Technology Council. He was the vice-chairman of the Scientific Council of the Ministry of Agriculture for five consecutive terms. He was a member of many scientific councils, including three terms of chairmanship of the IMER Council and OIN PAN. He also actively worked in the TNOiK structure, where he was the president of the Lublin Branch and NOT, being the president of the Lublin Branch of SIMP. In recognition of the great merits for creative activity, in particular for the development of agricultural sciences, Professor Haman was awarded four times with the highest academic dignity, which is an honoris causa doctorate, and also repeatedly decorated by the state authorities: Crosses – Knight's, Officer's and Commander's with the Star of the Order of Rebirth of Poland, Distinguished Teacher PRL, National Education Medal, Copernicus and Oczapowski Medal.

In this study, decomposition and densification behavior of PbAlNbO3-PbZrTiO3 (PAN-PZT) ceramics were characterized for powder injection molding process. Thermal gravity analysis and in-situ dilatometer experiment were carried out to construct master curve. Based on master curve model approach, one-combined master debinding curve (MDC) and master sintering curve (MSC) were constructed for piezoelectric PAN-PZT ceramics. Derived curves matched well with the experimental data. Process optimization and material development will be conducted based on characterization of master curve parameters.

Władysław Łuszczkiewicz was an art historian, artist, pedagogue, an outstanding personality of nineteenth-century Krakow, active in many fields. He was a professor at the Cracow School of Fine Arts, and in the years 1857–1873 and 1893–1895 he was the headmaster of this school. He was a teacher of many artists, of which it is enough to mention only the greatest — Jan Matejko, Stanisław Wyspiański, Józef Mehoffer and Artur Grottger. In 1883, Łuszczkiewicz was appointed the director of the National Museum in Krakow. He managed this institution until his death, that is until 1900.

Among the oldest source materials belonging to the Archive of the National Museum in Krakow, we can find the correspondence of former students of the School of Fine Arts addressed directly to their former teacher — Professor Łuszczkiewicz, who was at this time the director of the National Museum in Krakow. Based on selected letters, the article presents their interesting subject matter and presents the issues in which the students wrote to their Master. The attempt to describe the relation between former students and their master revealed in letters will be made.

In the dissertation it has been shown, that so called „time-thermal treatment” (TTT) of the alloy in liquid state, as overheating the metal

with around 250o

C above the Tliq. and detaining it in this temperature for around 30 minutes, improves the mechanical properties (HB, Rm,

R0,2). It was ascertained, that overheating the AlSi17Cu5Mg alloy aids the modification, resulting with microcrystalline structure. Uniform

arrangement of the Si primeval crystals in the warp, and α(Al) solution type, supersaturated with alloying elements present in the base

content (Cu, Mg) assures not only increased durability in the ambient temperature, but also at elevated temperature (250o

C), what is an

advantage, especially due to the use in car industry.

The effect of the complex ligature with nickel and REM (Ce, La) aluminides on the structure formation, the nature of the distribution of the elements, and the microhardness of the structural constituents of Al-5 wt.% Cu aluminum alloy were investigated. On the example of microalloying of the Al-5 wt.% Cu alloy with a master alloy containing Ni and REM (Ce, La) aluminides it was shown that a redistribution of Al and Cu occurs in α-solid solution and eutectic. This is reflected in the refinement of α-solid solution and eutectic at 0.15 wt.% of the master alloy addition and, accordingly, increases the microhardness of α-solid solution by 100 MPa and eutectic by 125 MPa.

The problem of effective gas extraction from Polish shale rocks is an interesting research subject for scientists. A properly selected proppant, which protects cracks from closing during the fracturing process, inestimably contributes to an increase of extraction. Grains of proppant are transported along with a fracturing medium to reach the deepest regions of the crack. The proper support of the crack provides an easy flow of gas, therefore it is important in terms of extraction efficiency. This paper shows the interactions of a proppant grain with the crack surface in shale rock. FEM analysis was conducted to observe the stress region, which is generated as a result of pressing the grain into the crack surface. A model of a sphere which was pressed into the rock model with constant velocity was applied. The received results of stress depend on material properties and a range of proppant grain pressing.

The results of studies on the use of modern two cored wires injection method for production of nodular graphite cast iron with use of unique implementation of drum ladle as a treatment/ transport and casting ladle instead vertical treatment ladle was described. The injection of length of Ø 9mm wires, cored: in FeSi + Mg nodulariser mixture and inoculant master alloy is a treatment method which can be used to produce iron melted in coreless induction furnace. This paper describes the results of using this method for possibility production of ductile iron under specific industrial conditions. In this case was taken ductile iron with material designation: EN-GJS-450- 10 Grade according PN-EN 1563:2000. Microstructure of 28 trials was controlled on internally used sample which has been correlated with standard sample before. The paper presents typical metallic matrix and graphite characteristic. Additionally, mechanical properties were checked in one experiment. Because of further possibility treatment temperature reduction only the rough magnesium recovery and cost of this new method are given.

The ethics of ‘theistic absolute morality’ (TAM), as any other ethical theory, must offer a definition of good, describe the connection between good and duty, and provide an effective guidance to human conduct. In the ethics of TAM we find, in my rendering of its claims, an irremediably unsuccessful definition of good, permanently loose connection between moral value and moral duty, and irreparably limited practical efficacy. It is not surprising that it has to be so, as it is a common condition of all ethical systems. The TAM ethics suffers, however, additionally from a unique conceptual trouble, but that is a story I have told elsewhere.