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Wyszukujesz frazę "Kulczyk, Sylwia" wg kryterium: Autor


Wyświetlanie 1-8 z 8
Tytuł:
Structure, function and cross-scale properties of landscape boundaries – a case study of the Płock area
Autorzy:
Kulczyk, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/2036146.pdf
Data publikacji:
2013-12-30
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Landscape
boundary
structural features
functional features
spatial hierarchy
Opis:
The paper describes features of landscape boundaries in the lowland landscape of Poland and verifies their cross-scale properties. The diversity of lithology, morphometry and land use was taken into account by delimitation of the boundaries. A scale of 1:50 000 was set as the basis. Three structural features (length, contrast and sinuosity) and two functional features (permeability and stability) were examined. The boundaries within the research area are typically of average length, low sinuosity, high permeability and low stability. A high correspondence between the diversity of abiotic components and land use is observed, resulting in a large number of high-contrast boundaries. However, this feature does not necessarily mean that these patterns are cross scale and can be applied at a higher level of landscape hierarchy. A geochemical/typological and regional order has been explored to describe properties of landscape boundaries for different spatial scales. Only the first of the listed orders corresponds to diversification of boundary features.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2013, 17, 4; 21-27
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Landscape boundaries - belts or lines? Examples from Southern and Northern Poland
Autorzy:
Kulczyk, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/2028869.pdf
Data publikacji:
2004-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
boundary
landscape unit
landscape typology
Opis:
The problem of width of landscape boundary remains widely discussed from more then one century. The author attempts to describe a width of some landscape boundaries of a higher rank by describing the mosaic of a lower rank landscape units. The research was realised within upland landscape of Nida Basin and lowland landscape of Wigry National Park.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2004, 11; 19-25
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The nature of boundaries of geocomplexes and the landscape types: the example of the surroundings of Pińczow in southern Poland
Autorzy:
Kulczyk, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/2027726.pdf
Data publikacji:
2000-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2000, 9; 5-10
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Perspectives of development of ecotourism in West Africa - examples from Niger, Mali and the Iyory Coast
Autorzy:
Kulczyk, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/2032500.pdf
Data publikacji:
2006-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
West Africa
ecotourism
Opis:
Ecotourism, understood as a form of leisure conforming with the principles of environmental protection and promoting its natural and cultural values, is dynamically developing in almost all parts of the world. Properly carried out, ecotourism projects may be an essential instrument of regional development. Problems of ecotourism development in four areas of West Africa, i.e. the Comoe National Park (Ivory Coast), the Dogoń Country (Mali), the northern Dallol Boss Region and Koure (Niger), and the Air and Tenere Natural Reserves (Niger) are discussed in the article. A common characteristic of the chosen areas are their significant natural and cultural values and the occurrence of tourist activeness allowing to ąualify them as ecotouristic sites. The analysis of both external and internal success factors in ecotourism leads to the conclusion that, in the discussed regions, ecotourism development is a positive phenomenon. It should, however, be accompanied by continuous supervision of environmental conditions and ecological education of the local population.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2006, 12; 251-259
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conditions and Prospects for the Development of Ornithological Tourism in Poland
Autorzy:
Kordowska, Monika
Kulczyk, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/627402.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
ornithological tourism
wetlands
Polska
Opis:
The article describes the present condition and the development trends of ornithological tourism in Poland. A questionnaire survey, participant observation and interviews have produced a description of Polish bird-watchers and ornithological tourism organizers. A partial distribution of bird-watching sites and needs for development have also been described. Polish ornithological tourism is at an early development stage, however, as in other countries, a dynamic growth of interest in this activity is found.
Źródło:
Turyzm; 2014, 24, 2; 15-21
0867-5856
2080-6922
Pojawia się w:
Turyzm
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rural tourism opportunity spectrum: linking people and landscape for spatial planning
Autorzy:
Kulczyk, Sylwia
Woźniak, Edyta
Powiązania:
https://bibliotekanauki.pl/articles/2096273.pdf
Data publikacji:
2022-09-09
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Tourism
landscape
rural areas
suitability
spatial analysis
Opis:
The aim of the study was to develop a low-cost method for tourism opportunity spectrum evaluation in rural landscapes. The method uses the geographic information system (GIS) for spatial analysis of the problem. Open source materials are used in the evaluation. Three principal indices derived from spatial data are evaluated: attraction index, view index, and access index. These form the basis for tourism suitability and opportunity spectrum evaluation. The analysis is realized for two types of tourists: those using cars, and hikers. The method permits the current state of tourism to be identified, and points out possible ways for further development as well as identifying valuable but overexploited zones which should be conserved. The obtained results can improve the sustainable management of landscapes and enhance the profits of rural areas.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2022, 26, 2; 101-110
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anisotropy of structural and mechanical properties in CuCrZr alloy following hydrostatic extrusion process
Autorzy:
Przybysz, Sylwia
Kulczyk, Mariusz
Skiba, Jacek
Skorupska, Monika
Powiązania:
https://bibliotekanauki.pl/articles/2173697.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hydrostatic extrusion
anisotropy
mechanical properties
grain refinement
CuCrZr alloys
wytłaczanie hydrostatyczne
anizotropia
właściwości mechaniczne
rozdrabnianie ziarna
stop CuCrZr
Opis:
The methods of severe plastic deformation (SPD) of metals and metal alloys are very attractive due to the possibility of refinement of the grains to nanometric sizes, which facilitates obtaining high mechanical properties. This study investigated the influence of SPD in the process of hydrostatic extrusion (HE) on the anisotropy of the mechanical properties of the CuCrZr copper alloy. The method of HE leads to the formation of a characteristic microstructure in deformed materials, which can determine their potential applications. On the longitudinal sections of the extruded bars, a strong morphological texture is observed, manifested by elongated grains in the direction of extrusion. In the transverse direction, these grains are visible as equiaxed. The anisotropy of properties was mainly determined based on the analysis of the static mini-sample static tensile test and the dynamic impact test. The obtained results were correlated with microstructural observations. In the study, three different degrees of deformation were applied at the level necessary to refine the grain size to the ultrafine-grained level. Regardless of the applied degree of deformation, the effect of the formation of a strong morphological texture was demonstrated, as a result of which there is a clear difference between the mechanical properties depending on the test direction, both by the static and dynamic method. The obtained results allow for the identification of the characteristic structure formed during the HE process and the more effective use of the CuCrZr copper alloy in applications.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 4; art. no. e141725
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of HE and ECAP processes on changes in microstructure and mechanical properties in copper, iron and zinc
Autorzy:
Kulczyk, Mariusz
Skorupska, Monika
Skiba, Jacek
Przybysz, Sylwia
Smalc-Koziorowska, Julita
Powiązania:
https://bibliotekanauki.pl/articles/27311391.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
hydrostatic extrusion
equal channel angular pressing
rate of plastic deformation
copper
iron
zinc
wytłaczanie hydrostatyczne
prasowanie kątowe równokanałowe
szybkość odkształcenia plastycznego
miedź
żelazo
cynk
Opis:
The research presented in this paper concerns the influence of the rate of plastic deformation generated directly in the processes of severe plastic deformations on the microstructure and properties of three metals: copper, iron and zinc. The equal channel angular pressing (ECAP) method was used, and it was performed at a low plastic deformation rate of ∼ 0.04 s−1. The high plastic strain rate was obtained using the hydrostatic extrusion (HE) method with the deformation rate at the level of ∼ 170 s−1. For all three tested materials different characteristic effects were demonstrated at the applied deformation rates. The smallest differences in the mechanical properties were observed in copper, despite the dynamic recrystallization processes that occurred in the HE process. In Armco iron samples, dynamic recovery processes in the range of high plastic deformation rates resulted in lower mechanical properties. The most significant effects were obtained for pure zinc, where, regardless of the method used, the microstructure was clearly transformed into bimodal after the ECAP process, and homogenized and refined after the HE process. After the HE process, the material was transformed from a brittle state to a plastic state and the highest mechanical properties were obtained.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 3; art. no. e145563
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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