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Number of results: 16
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Abstract

This article contains information concerning of the analysis the possibility of defining refinery qualities of the slag based thermo-physical and thermo-dynamical data. It was showed the brass refining with the many-carbide reagents introduced in to the slag. The paper presents the results of the structure analysis of the brass after carbide slag refining in the industrial conditions. The results of the macrostructure analysis have confirmed the argument on high reducing effectiveness of manganese and aluminium carbide used during CuZn39Pb2 alloy melting. The X-Ray microanalysis of the ingot cross-section has shown considerable discrepancies in the disposition of the inclusions. This effects showed on the great influence of reduction melting condition in to the brass melting
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Abstract

The main scope of the article is the development of a computer system, which should give advices at problem of cooper alloys manufacturing. This problem relates with choosing of an appropriate type of bronze (e.g. the BA 1044 bronze) with possible modification (e.g. calcium carbide modifications: Ca + C or CaC2) and possible heat treatment operations (quenching, tempering) in order to obtain desired mechanical properties of manufactured material described by tensile strength - Rm, yield strength - Rp0.2 and elongation - A5. By construction of the computer system being the goal of presented here work Case-based Reasoning is proposed to be used. Case-based Reasoning is the methodology within Artificial Intelligence techniques, which enables solving new problems basing on experiences that are solutions obtained in the past. Case-based Reasoning also enables incremental learning, because every new experience is retained each time in order to be available for future processes of problem solving. Proposed by the developed system solution can be used by a technologist as a rough solution for cooper alloys manufacturing problem, which requires further tests in order to confirm it correctness.
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Abstract

In contrast to Antarctica, the Arctic was for a long time deprived of an adequate system of multilateral international scientific cooperation. That gap was filled in 1990 by the foundation of a non-governmental International Arctic Science Committee (IASC). In this article, the origin, structure, operation and perspectives of that Committee are presented.
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Abstract

3D printing in FDM (Fused Deposition Modelling) technology is commonly used, mainly in the preparation of prototypes, but also for the production of ready-made elements. Objects printed using the FDM method have characteristic, adverse surface features related to the limitations of this technology. That is why surface treatment of 3D prints becomes crucial. One of the method is metal plating of elements. The most frequently used material in FDM technology is PLA (polylactic acid) and ABS (acrylonitrile butadiene styrene). Study of surface parameters determination for ABS prints after galvanic copper plating is presented in this paper. For this purpose, samples printed with ABS were smoothed in acetone vapour. Most favorable parameters of the surface were obtained for samples that had contact with acetone vapour for 60 minutes. Ultimately, surface analysis of samples after graphite coating and subjected to copper plating was performed. It was found that surface parameters are close to results obtained with traditional methods of metal processing.
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Abstract

The paper presents the research results of the influence of the precipitation hardening on hardness and microstructure of selected Al-Si and Al-Cu alloys obtained as 30 mm ingots in a horizontal continuous casting process. The ingots were heat treated in process of precipitation hardening i.e. supersaturation with subsequent accelerated or natural ageing. Moreover in the range of the study it has been carried out investigations of chemical constitution, microscopic metallographic with use of scanning electron microscope with EDS analysis system, and hardness measurements using the Brinell method. On basis of obtained results it has been concluded that the chemical constitution of the investigated alloys enables to classify them into Al alloys for the plastic deformation as EN AW-AlSi2Mn (alternatively cast alloy EN AC-AlSi2MgTi) and as EN AW-AlCu4MgSi (alternatively cast alloy EN AC-AlCu4MgTi) grades. Moreover in result of applied precipitation hardening has resulted in the precipitation from a supersaturated solid solution of dispersive particles of secondary phases rich in alloying element i.e. Si and Cu respectively. In consequence it has been obtained increase in hardness in case of AlSi2Mn alloy by approximately 30% and in case of AlCu4MgSi alloy by approximately 20% in comparison to the as-cast state of continuous ingots.
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Abstract

The aim of this work was to determine the effect of various cadmium and copper concentrations on the activated sludge dehydrogenase activity. The investigations were carried out in six aerated chambers with activated sludge, volume of 1L each, by the continuous culture method (one control chamber, not contaminated with heavy metals and five with 0.5; 1; 2; 4; 8 mg L-1 Cu+2 and 0.1; 0.3; 0.9; 2.7; 8.1 mg L-1 Cd2+). Cadmium sulfate and copper sulfate as a source of heavy metals were used. The concentrations of these metal ions, causing 50% dehydrogenase activity inhibition were determined. The particular attention was paid to the toxic effect of metal ions, as well as the variations of the microbial respiration activity proceeded during toxins exposition. The investigation showed that even the lowest concentration of the investigated metal ions caused significant changes of the activated sludge dehydrogenases activity. Copper ions showed to be more toxic than cadmium ions.
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Abstract

The analysis of changes in the mechanical properties of wooden mining cribs under the influence of different types of exploitation loads is the question for which deals with many domestic and abroad research centers deal with. High The high interest in this subject results from the increase of the conducted depth exploitation, which contributes to the increase in both the vertical pres-sure and the complexity of geological – mining conditions and in- the intensification of natural hazards. Another reason is the tendency of decreasing the thickness of the exploited ores deposits. Wooden crib support is used Both both in underground ore, hard coal and salt mining is used wooden crib support. Mining cribs with various configurations are especially useful for the reinforcement of excavations workings behind the front and for further strengthen of the crossings. In particular, additional reinforcement support in the form of wooden cribs (pile supporting), which shall be left empty or filled with waste rock is applied in the ore mining in places where found extended rooms or drifts are found or in places with degraded roof conditions, applies additional reinforcement support in the form of wooden cribs (pile supporting), which shall be left empty or filled with waste rock. During underground ex-ploitation is produced waste Waste rock, which comes from the access, prepar-atory excavations and from ongoing field of exploitation is produced during underground exploitation. In the case of the underground exploitation of cop-per ore, waste rock is used to fill voids after exploitation as rock stowing. It is also used for filling mining wooden cribs, as an artificial support and for harder transportation roads. This paper presents the results of the laboratory strength tests performed on models of four-point timber cribs, built with beams set horizontally, at the ge-ometrical scale of 1:10. In the laboratory research Research wooden cribs models with size 200 × 200 × 200 mm and 100 × 100 × 100 mm were used in the laboratory. The paper describes the maximum loading capacity of the cribs consisted consisting only of beams and filled with waste rocks. In addition, a vertical and appropriate strain of cribs at maximum force was shown. On the basis of laboratory research it was found that the use of the same number of timbers and the management of waste rocks, the filling of the four-point cribs with the waste rocks allowed several times to increase its support to be increased several times.
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Abstract

In this article, Svalbard was presented as place and object of intensive scientific research, carried on under the rule of the 1920 Spitsbergen Treaty, which has transformed the archipelago into a unique political and legal entity, having no counterpart anywhere else in the world. Scientific activities in Svalbard are carried out within an uncommon legal framework, shaped by a body of instruments both of international law and domestic laws of Norway, as well as other countries concerned, while the Spitsbergen Treaty, in despite of its advanced age of 75 years, still remains a workable international instrument, fundamental to the maintenance of law and order within the whole Arctic region. In 1995 two important for Svalbard anniversaries were noted: on 9 February, 75 years of the signing of the Spitsbegren Treaty and on 14 August, 70 years of the Norwegian rule over the archipelago.
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Abstract

The paper presents the long-term project “Online Dictionary of Surnames in Germany” (“Digitales Familiennamenwörterbuch, DFD”), its conception, main objectives, and its technical realisation. By means of representative examples, the paper depicts how the project works along the categories of conflation, validation, specification or revision of etymologies so far proposed in standard references and the development of new ones. Exploiting new digital resources — especially with the help of new findings in surname geography, the surname stock can be captured and analysed all-encompassing and systematically. Surnames of foreign origin like English, French, Italian, Slavic, Baltic or Turkish are also considered. The importance of Slavic roots in German surnames is exemplified by the name Novak (‛new settler’) which ranks position 156 in the total frequency of German surnames. The article’s outlook discusses the importance and possibilities for future cooperation with surname projects in other countries like Poland, with a long-term perspective for a European network of surname dictionaries.
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Abstract

Good practices in the creation of the Commune Revitalization Program – cooperation between the University of Adam Mickiewicz and the City of Kalisz, The entry of the Revitalization Act on November 18, 2015 enabled municipalities to efficiently plan and conduct the process of moving degraded areas out of the crisis. The Act introduced key regulations affecting the programming of revitalization in Poland. One of the most important instruments is the Municipal Revitalization Program. In order to be able to fully use the potential of this document, we should look for solutions that allow creating the most comprehensive solutions. One of the examples of such activities is cooperation between the university and the local government. Thanks to this combination of practical knowledge of officials with theoretical knowledge of academic experts, we can say that it is a project unique in the country. It is also unique due to the fact that spatial economy students who actively participated in the document creation process were included in the work. The aim of the work is to present the course of the cooperation process of the University of Adam Mickiewicz with the Office during the preparation of the Municipal Revitalization Program for the city of Kalisz and showing the role that the students included in the project played in this project
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Abstract

Self-fulfilling prophecy is seen as an important phenomenon linking social perception with social interaction, being in line with the assumption that conviction creates reality. The adoption of such a perspective upgrades the rank of expectations, which being in control of human behaviour, permeate all areas of people’s activity. Within the area of interpersonal interaction, its participants either perceive what is expected of them or make assumptions about expectations on the basis of behaviour which is directed towards them. Following this lead, and referring to the possibility of co-operation between teachers and parents, we are confronted with a question whether within the anticipated interaction parents may cope as well, or as badly as it is expected of them by teachers. This article attempts to answer this question as well as to analyse the relationships between teachers and parents through the prism of the idea of self-fulfilling prophecy, bearing in mind that the phenomenon itself consists of extremely complex interaction of cognitive and behavioural factors.
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Abstract

In the last decades borderlands studies have been rapidly developing in various disciplines. Within the changing function of European borders (from separating line between two souvereign states to borderscapes of intercultural flows and fluid identity) the focus of border scholars moved towards social relations and bottom-up perspective. Thus, borderlands are perceived as laboratories of European integration and multicultural spaces. For the aim of this article, borderlands are defined as spaces located on the geographical border between different states, nations and cultures that are objects of European Union cohesion policy. By analysing the Eurobarometer survey on cross-border cooperation I try to demonstrate differences between border regions covered by the Interreg cross-border cooperation programmes in terms of cross-border practices, general trust in others and attitudes towards citizens of neighbouring countries.
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Abstract

Local development, based on the use of endogenous potentials, requires the cooperation of muni-cipalities in urban functional areas (agglomerations). However, conducting joint activities in the area of building and running local development policy is a serious challenge. On the one hand, there is a shortage of experience in this area (not counting the short period of functio-ning municipal unions in the years 1920-1939 and intentional inter-communal relations after 1990). In addition, there are still no legal solutions needed (in addition to the act passed in 2017 for the metropolis of Silesia and Zagłębie). In recent years, however, projects of integra-ted territorial investments and other project partnerships have been implemented under the European Union and the Norwegian Financial Mechanism Programs, which result in prac-tical conclusions and legislative recommendations. The most important of them concern the introduction of a new form of partner cooperation and the adoption of a new urban code. Their quick implementation will enable more eff ective cooperation for development.
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Abstract

The purpose of the author was to indicate the deficiency of development management instruments currently used to the territorialization of policies in stimulating intra- and intersectoral partnership cooperation. Her reflections were based on the results of research commissioned by the Polish Ministry of Development and Investment by a team in which the author participated. These studies have revealed that the weakest impacts of the so-called territorial instruments include the ability to mobilize various stakeholder groups to take action and to create partnership cooperation. Against this background, the author has undertaken the analysis of the potential impact of territorial tools on the partnerships development and has attempted to present recommendations for practice and further research in this area.
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Abstract

The Author discusses the present state of Polish geography against the background of the traditional position, and the rapid development taking place after the Second World War. The introduction of new methods and new directions, as well as new organization are considered to have been reflected in the rising international position of Polish geography. Further topics here include the relationship between physical and human geography, the growing de facto separation of these two branches, and the development of several independent sciences rooted in geography but now existing apart from it (like geomorphology, climatology, hydrology, etc. on the physical geography side, with the element of the environment as a subject of study). On the other hand, social economic geography examines the effects of human activity in the environment, thereby synthesizing spatial management and bridging the gap between the earth sciences, the economy and the social sciences. The degradation of environmental resources, explosion of the human population and climate change have all forced geography (and other sciences) to head in the global direction, as well as towards interdisciplinary cooperation, likewise on the level of the world as a whole. If we are to meet the challenges this all entails, we will need to think about creating interdisciplinary problem teams, as well as activating existing organisational structures in science (notably the geographical sciences), with full benefit taken from research centres that run studies on differing spatial scales, in conjunction with international global programmes like the Future Earth. The geography of the future should not be a closed science, but should draw on the knowledge of scholars of various specialisations, seeking environmental solutions that require intervention on both the global and regional scales. Polish geography should participate in this activity, inter alia as part of Future Earth, as a new venture. It can also be regarded as our task to ensure that society is aware of all the above issues.
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Abstract

The article is an answer to questions concerning values, goals and functions of the University in the era of globalization changes that enforce changes in the area of higher education. The author emphasizes the need for balanced development of science, humanities and social sciences as a condition for preserving research independence, as well as the importance of cooperation, both in research and in the „shaping of autonomous institutionalism” of the University (Roggero). The article provides an analysis of the commercialization process of research results, based on data from Polish and foreign studies, and indicates its various forms and social costs. This is a study of the University's condition in the face of the growing importance of transnational corporations, regulating not only the flow of capital, but also the distribution of scientific prestige and appropriating in a different way the effects of academic work. The metaphor of the university as a enterprise/knowledge factory visualizes the errors in perceiving the role that it should play. It proves that research and teaching is not the production and transmission of knowledge, but the creation and sharing of knowledge. In this dialogical process, the idea of a university understood as a community of educators and taught in pursuit of truth is achieved most fully, not for glory, for making profit or for gaining a competitive advantage.
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