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  • Author: Jacek Pluta x
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A Socio-Economic Portrait of Foreign Students in Poland – as Exemplified by Students from Former CIS Studying at WSB University in Wroclaw

Summary

A noticeably increased intensity of migration becomes a very important issue with regard to economic, socio-cultural and political matters. Broader flow of people results in the occurrence of numerous threats, but also provides opportunities and benefits for both the participants of migration flows, and the areas to which the flow is directed. An important role in this process is played by the students, who con stitute a special category of immigrants. The article contains a socio-economic characteristics of foreign students from countries of the former CIS, with the emphasis on their reasons for immigration, organizing their new life abroad, life plans and in particular their economic activity. The core purpose of the article is to identify the mechanisms of adaptation of foreign students as a specific category of immigrants to functioning in the new socioeconomic environment. The article, in addition to its cognitive merit, also has a practical purpose. The problems and obstacles faced by foreign students in Poland form a basis for general recommendations for actions aimed at improving the conditions of functioning of foreign students in the new realities.

Open access
Genetic diversity of the long terminal repeat of bovine leukaemia virus field isolates

Abstract

In this study the sequences of the long terminal repeat (LTR) of field isolates of the bovine leukaemia virus (BLV) were analysed. These isolates came from emerging cases of BLV infection in cattle from herds having BLV-free status. We found several sequence variations within regulatory motifs in the LTRs like GRE, DAS and interferon binding site. These mutations can possibly affect transcriptional activity of the virus, leading to its silencing.

Open access
Stakeholders in the local service centre: who should be involved in the planning process? Insights from Poland, Czech Republic and Denmark

Abstract

Local service centres play a vital role in shaping the quality of life in urban neighbourhoods. They offer access to essential everyday services (shops, education, healthcare, personal services) and to public spaces. If they are properly planned and managed, they can bring particular added values to a local community, such as social integration and territorial identification. The history of urban planning has produced several patterns of local service centres (ancient agora, mediaeval market square, neighbourhood unit, modern agora) but today a question arises: how can a local service centre be successfully planned and organised in post-modern political practice? How can its potential be realised and the ever-changing needs, expectations and preferences of local communities be met? Who should be involved in those processes? To answer those questions in this paper we refer to citizen participation and public communication concepts, where selecting the appropriate stakeholders emerges as a necessary starting point for effective urban governance. We present the results of in-depth interviews with local actors (local authorities, municipality officials, town planners, non-governmental organisations, local leaders) in Poland (Wrocław, Siechnice, Ostrów Wielkopolski, Warszawa and Zabierzów), Czech Republic (Prague) and Denmark (Copenhagen). Depending on the specific local context, various stakeholders are perceived as essential to the decision-making process. The power relations and problems encountered in implementing public policy in particular locations have been summarised in three sections: relationships between stakeholders, leadership, and good practices. The paper concludes with a list of typical actors who should be involved in planning, building and managing a local service centre in an urbanised neigh-bourhood.

Open access
Diversity of GAG Gene Sequence Encoding Immunodominant Epitope on Capsid Protein of Lentiviruses from Sheep in Poland

Abstract

In the study, a 122 bp fragment of gag gene encoding immunodominant epitope on capsid protein of small ruminant lentiviruses (SRLVs) found in sheep was amplified by PCR and analysed by SSCP and sequencing. Out of 30 DNA samples, five showed different migration patterns, demonstrating the individual variations within gag sequences, which were confirmed afterwards by sequence analysis. In two samples nucleotide changes yielded amino acid substitutions highlighting the conservative nature of gag encoded immunoreactive epitope but also potencial insensitivity of a single-strain-based immunoassay.

Open access
Properties of Fe-based nanocrystalline magnetic powder cores (MPC) and structure of particle size distribution (PSD)

Abstract

This paper discusses the influence of the Particle Size Distribution (PSD) of the nanocrystalline Fe-based granular-soft-magnetic material on the final magnetic properties of a Magnetic Powder Core (MPC). Here we show how PSD impacts the final magnetic properties. Mixing fine and coarse particles, with a dominance of coarse particles, significantly influences the magnetic permeability increase of the core. Better magnetic features are noted for MPCs constructed with certain mass ratio of fine and coarse particles due to improvement in the magnetic path in the cores. This allows to offer new induction components to industry.

Open access