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Wyszukujesz frazę "Water retention" wg kryterium: Temat


Tytuł:
Hysteresis between wetting and drying processes as affected by soil aggregate size
Autorzy:
Witkowska-Walczak, B.
Powiązania:
https://bibliotekanauki.pl/articles/25257.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil aggregation
hysteresis
soil
water retention curve
water retention
drying process
wetting process
Źródło:
International Agrophysics; 2006, 20, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The groundwater level changes caused by modernization of water devices in the Pomorze Forest District
Autorzy:
Wróbel, M.
Boczoń, A.
Grajewski, S.
Krysztofiak-Kaniewska, A
Powiązania:
https://bibliotekanauki.pl/articles/101003.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
small-scale water retention
groundwater
Opis:
Because of more and more frequent droughts and observed climate changes, infrastructural investments in forest are at present targeted at increasing water resources, which is realized under the so-called small scale water retention. Forest reservoirs located in Pomorze Forest District in the north-eastern Poland, which was selected for research, fits this trend. The constructed facilities were to reduce the indications of habitat dryness and to improve fire prevention. The investment consisting in building 14 objects of water melioration has changed water conditions in the research area. 12 oak dams, stone weir and an earth pond for amphibians have been built. As a result of the realized investment, the level of water has increased and problems with periodical flooding of forest habitats have occurred. At the beginning of 2012, observational and measuring wells were created to monitor all occurring changes of the soil water table. The received data can be useful in clarifying the causes for flooding and in possible suggestions to improve the existing water conditions. This paper presents the analysis of the influence of realized investments on the changes in the level of groundwater between 2012 and 2014.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2016, III/1; 715-723
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water retention on the extensive green roof models
Autorzy:
Baryła, A.
Karczmarczyk, A.
Wróbel, M.
Kożuchowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/100983.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
green roof
water retention
runoff delay
Opis:
One of the main problems of urbanization is the continuous growth of sealed surfaces. Impermeable surfaces i.e. roofs, roads or pavements have dominated land cover, increasing surface runoff and limiting groundwater runoff, often contributing to increased flood risk. The practice of many countries has shown that green roofs are one of the solutions to the problem of rainwaters on the urban areas. The aim of the study was to assess the retention ability of three green roofs of extensive type with different substrate composition (two mineral-organic mixtures, one mineral mixture). The research was carried out at the Water Centre of the Warsaw University of Life Sciences in Warsaw (Ursynów district) in the period from June to November in 2016. The obtained results were compared with observation of the reference model – bituminous roof. Model studies have shown that green roofs retained water in the range from 9.5 mm to 67.1 mm. The average runoff coefficients for green roof types in the period from June to November in 2016 were from 0.31 to 0.33. The obtained results showed slight differences in outflows with different substrates. During high rainfall, the differences in the runoff between the green roofs and the reference roof were negligible.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/2; 1649-1658
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of the Przebędowo Reservoir on the Water Quality of the Trojanka River in the First Years of its Functioning
Autorzy:
Waligórski, Błażej
Janicka, Ewelina
Powiązania:
https://bibliotekanauki.pl/articles/2069912.pdf
Data publikacji:
2021
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
small-scale water retention
dammed reservoirs
water quality
Opis:
Agriculture, mainly biogenic compounds (nitrogen and phosphorus) and plant protection products are one of the sources of environmental pollution. The sources of pollution are both farm buildings and intensively used agricultural land. Therefore, a crucial element of the environment contributing to the improvement of surface water quality are the aforementioned shallow reservoirs covered by vegetation that act as biofiltres or reservoirs such as dammed reservoirs. The analysed reservoir is located in the Greater Poland Province, about 25 km to the north from Poznań, in Murowana Goślina commune. The research on the analysed reservoir was conducted during the growing seasons, from 2016 to 2018, at three measurement and control points: at the Przebędowo reservoir inflow, it the Przebędowo reservoir and at the Przebędowo reservoir outflow. They included determining 4 groups of physico-chemical indicators supporting biological elements, including indicators characterising aerobic conditions, salinity, acidification (pH) and indicators characterising biogenic conditions. Based on the conducted research, a great influence of the reservoir was proven, especially in the context of the concentration of dissolved oxygen at the outflow, where, concerning this indicator, the reservoir was classified as water quality class I. The presented research results also confirmed that in the context of the complexity of hydrological and physico-chemical processes taking place in dammed reservoirs, it is necessary to continuously control them both in terms of water quantity and quality.
Źródło:
Rocznik Ochrona Środowiska; 2021, 23; 151--167
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The present condition of small water retention and the prospects of its development using the example of the Podlaskie Voivodeship
Autorzy:
Szczykowska, J.
Siemieniuk, A.
Powiązania:
https://bibliotekanauki.pl/articles/125184.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
small water retention
water reservoirs
small retention programs
Podlaskie Voivodeship
Opis:
The necessity and purposefulness of the investments related to water retention are justified mostly due to the preservation of the environment equilibrium as well as due to its farming, anti-flood, landscape and recreation aspects. Reasonable water management where various forms of retention are used gives large chances for the mitigation of the effects of unfavorable phenomena related to its insufficient amount. The creation of plans regarding the formation of reservoirs accumulating water is not necessarily synonymous with their realization. The reason of problems connected with the implementation of plans regarding the formation of new reservoirs lies mainly in financial measures and in problems with obtaining them. Water deficit in Poland is the reason for which the principles of its national usage need to be complied with. Realization of plans at both Voivodeship and municipality level that are focused on small retention will contribute to considerable increase in the retention capacity and will enable considerable increase in available resources in hydrographic catchments of both the characterized area and the entire country. The paper presents the characteristics of the present state and assumes the perspective development of small water retention in the Podlaskie Voivodeship using the example of the Podlaskie Voivodeship.
Źródło:
Journal of Ecological Engineering; 2014, 15, 3; 90-96
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the short-term effect of tillage practices on soil hydro-physical properties
Autorzy:
Bahmani, O.
Powiązania:
https://bibliotekanauki.pl/articles/971584.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
tillage
soil hydraulic properties
soil water retention
Opis:
Tillage is one of the most important practices that have a significant influence on the soil hydro-physical properties. In this study, the impact of the type and number of input variables with five different methods of the Retc model to predicting the moisture retention curve and soil water content in three surfaces tillage NT (No-tillage), CP (Chisel Plough) and MP (Moldboard Plough) and the impact of tillage systems on soil hydro-physical properties were evaluated. According to results, when the field capacity and wilting point moisture was added to input data in Retc to predict the moisture curve model parameters, the EF was increased in MP (0.977, 0.95) and CP (0.891, 0.86) treatments compare the NT (0.665, 0.608). The Mualem–Van Genuchten model can describe satisfactorily the simulation of soil physical properties. The S-index, which was also affected by tillage, was greater than 0.066 in all tillage treatments, indicating good soil physical quality. Results indicated that NT had the highest and lowest values of bulk density (1.55 Mgr.m⁻³) and total available water (TAW) (0.038 m.m⁻¹), respectively, and the differences between NT and MP in total porosity was significant. Overall, in most soil layers, tillage practices affected the porosity and total available water in the order MP > CP > NT. Water retention curves indicated that the water retention capacity was greater in tilled than in no-tilled and saturated hydraulic conductivity values were greater in tilled treatments than in NT soil.
Źródło:
Polish Journal of Soil Science; 2019, 52, 1; 43-58
0079-2985
Pojawia się w:
Polish Journal of Soil Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ ugniatania kołami ciągnika dwóch gleb - piaszczystej i pyłowej na ich właściwości retencyjne
The influence of loamy sand and silty soil compaction on water retention
Autorzy:
Kopeć, S.
Głąb, T.
Powiązania:
https://bibliotekanauki.pl/articles/338657.pdf
Data publikacji:
2004
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
ugniatanie gleby
właściwości retencyjne
soil compaction
water retention
Opis:
W pracy przedstawiono wyniki badań nad wpływem ugniatającego działania kół ciągnika rolniczego na zmiany właściwości retencyjnych dwóch różnych gleb pokrytych roślinnością trawiastą. Badania prowadzono na specjalnie założonych doświadczeniach polowych, w których obiekty doświadczalne były poddawane ugniataniu kołami ciągnika Ursus C-360 przez 0-, 2-, 4- i 6-krotne przejazdy (całych powierzchni), w ciągu 3 lat po każdym pokosie (3 pokosy rocznie, łącznie 9 serii przejazdowych). Po ostatnim ugniataniu pobrano próbki gleby z 3 głębokości (0-5, 10-15, 20-25 cm) do określenia właściwości retencyjnych i oznaczono retencję użyteczną i produkcyjną badanych gleb. Z badań wynika, że właściwości retencyjne rozpatrywanych gleb pod wpływem wielokrotnych przejazdów ciągnika zmieniają się w różnym stopniu. Na glebie pyłowej nacisk kół ciągnika spowodował istotne zmiany zawartości wody retencyjnej, zarówno użytecznej, jak i produkcyjnej. Na glebie piaszczystej wpływ ugniatania był mniej wyraźny, a istotne różnice wystąpiły tylko między obiektami ugniatanymi a obiektem kontrolnym i to głównie w warstwie 10-15 cm.
The study was carried out as a field experiment on two soils (silt and loamy sand) under grasses. The experimental factor was the number of tractor passes. Plots were compacted by wheels of a Ursus C-360 tractor (weight 2056 kg) after each cut. Wheel passes covered the entire surface of plots. The combination of passes was as follows: control (0), one pass (1), two passes (2), four passes (4) and six passes (6). In the third year soil samples (volume 100 cm³) were collected from three soil layers: 0-5 cm, 10-15 cm and 20-25 cm. Soil samples were saturated with water on a suction plate and then water retention was determined. The results showed that retention properties were different for different soils. In silty soil wheel pressure significantly affected available and productive water retention. In sandy soil these differences were only recorded in the 10-15 cm soil layer.
Źródło:
Woda-Środowisko-Obszary Wiejskie; 2004, T. 4, z. 2a; 87-93
1642-8145
Pojawia się w:
Woda-Środowisko-Obszary Wiejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agricultural pollution and water quality in small retention reservoir in Korycin
Autorzy:
Szczykowska, J.
Siemieniuk, A.
Wiater, J.
Powiązania:
https://bibliotekanauki.pl/articles/124505.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
small water retention reservoir
pollutions
biogenic compounds
trophic
Opis:
The study aimed at determining the changes in the trophic status of the processes associated with the risk of eutrophication in small retention reservoir in Korycin, characterized by agricultural performance of direct and indirect catchment. The study was conducted using the surface water samples that were collected systematically every month over four hydrological years (2008 to 2014) from three research points. Mean annual concentration of total phosphorus varied from 0.641 mg P/dm3 during research conducted in 2007/2008 to 0.874 mg P/dm3 in 2013/2014 showing an increasing trend from year to year. Taking into account the calculated average values, an upward trend can be seen along with particular years of the study from the annual average value of 1.44 mg N/dm3 determined in the first year to the value of 2.66 mg N/dm3 recorded in the last year of the study. It was observed during the study that in non-flowing parts of Korycin reservoir, plankton developed more abundantly than in the central fragments, where the flow of water is more intensive. A mild growth of phytoplankton in the waters of Korycin reservoir is provided by relatively low concentrations of chlorophyll “a” found during all research periods. Concentrations of chlorophyll “a” in waters of the reservoir were within the range of 4.08 to 5.21 g/dm3. At a Schindler coefficient > 2, this value, based on the Decree of the Minister of the Environment of 2011, should not exceed 7 and therefore waters of the Korycin reservoir during the research can be classified as the first class. Values of the general trophic level (Trophic State Index) during the first three years of the study ranged from 67.15 to 68.65, which enabled to count waters of the reservoir in Korycin to eutrophic ones. In the last year of the analyzes, this coefficient increased to a value of 72.43, classifying its waters as hypertrophic. The largest share in such a situation was expressed by TSI (TP), which ranged from 97.34 to 101.82, always classifying the waters to hypertrophic ones. In contrast, the indicator TSI (TN) ranged from 59.71 to 68.57 and it classified the reservoir waters to eutrophic, while TSI (Chl) to mesotrophic.
Źródło:
Journal of Ecological Engineering; 2015, 16, 1; 141-146
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of grasslands and their use in Poland
Autorzy:
Gabryszuk, Mirosław
Barszczewski, Jerzy
Wróbel, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/2048544.pdf
Data publikacji:
2021
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
meadows
pastures
permanent grasslands
Polska
small water retention
Opis:
Permanent grasslands are the most environment-friendly way of using agricultural lands. Apart from producing fodder, grasslands play many other important non-productive functions. Biodiversity is the key factor decisive for their high natural and productive values. Grasslands play an important role in water retention. Not all types of grasslands may be used agriculturally. Out of 16 types of habitats, 10 may be used for production, the others are biologically valuable. The surface area of permanent grasslands in Poland has markedly decreased during the last decade. Now, they constitute slightly more than 20% of agricultural lands occupying 3127.8 thous. ha (in 2019) including 2764 thous. ha of meadows and 363.8 thous. ha of pastures.
Źródło:
Journal of Water and Land Development; 2021, 51; 243-249
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pedotransfer functions for predicting tropical soil water retention: A case study in upper Citarum watershed, Indonesia
Autorzy:
Mulyono, Asep
Suriadikusumah, Abraham
Harryanto, Rachmat
Djuwansah, Muhammad R.
Powiązania:
https://bibliotekanauki.pl/articles/292735.pdf
Data publikacji:
2020
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
matric potential
pedotransfer
soil water retention
upper citarum watershed
Opis:
Tropical regions such as Java, Indonesia, still lack publication of soil water retention (SWR) information, particularly at upper Citarum watershed. The SWR is one of the critical elements in water storage and movement in the soil and very important to solve ecological and environmental problems. However, getting the access requires a lot of laboratory measurement that is time-consuming and expensive. Therefore, utilizing pedotransfer functions (PTFs) to estimate the water in the soil is needed. This study aims to define soil properties related to the SWR and to evaluate the performance of existing PTFs in predicting SWR. The study was carried out at agroforestry land system soil at upper Citarum watershed, Indonesia. Ten point and two continuous existing PTFs developed for tropical regions were applied in this study. Pearson's correlation (r), mean error (ME), root mean square error (RMSE), and modelling efficiency (EF) were used for evaluation. Cation exchange capacity (CEC), organic carbon (OC), bulk density (BD), and clay were considered as potential soil properties for soil water retention prediction. The performance of PTFs by MINASNY, HARTEMINK [2011] at matric potential of –10 kPa and BOTULA [2013] at matric potential of –33 kPa and –1500 kPa were recommended for point PTFs, while PTFs by HODNETT, TOMASELLA [2002] was for continuous PTFs in predicting SWR. The accuracy of the point PTFs is almost better than the continuous PTFs in predicting SWR in agroforestry land system soil at upper Citarum watershed, Indonesia.
Źródło:
Journal of Water and Land Development; 2020, 45; 76-85
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agrophysical methods of water retention control in the rural areas
Autorzy:
Walczak, R.T.
Glinski, J.
Slawinski, C.
Lamorski, K.
Powiązania:
https://bibliotekanauki.pl/articles/24559.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
rural area
agrophysical method
Europe
water retention
flood control
Źródło:
International Agrophysics; 1998, 12, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New pedotransfer function (“CRC”) for the prediction of unsaturated soil hydraulic conductivity using soil water retention data
Autorzy:
Bohne, K.
Renger, M.
Wessolek, G.
Powiązania:
https://bibliotekanauki.pl/articles/2082651.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil texture
hydraulic conductivity
transfer
function
soil water retention
Opis:
Several review articles have emphasized, that a comprehensive set of pedotransfer functions may be applied throughout a wide range of disciplines of Earth system sciences and are of great importance for land surface models. Most pedotransfer functions deducing soil hydraulic data from nonhydraulic soil data such as soil texture and bulk density, yield soil water retention predictions, but do not provide information concerning soil hydraulic conductivity. For this reason, a simple method was developed to estimate soil hydraulic conductivity using soil water retention information. Empirical equations are established to predict soil hydraulic conductivity from soil water retention information. These equations are relatively straightforward and do not require the fitting of nonlinear functions. Predictions of soil hydraulic conductivity using 106 soil samples indicates the reliable performance of the new method. The prediction quality of the new method was estimated from the calibration data set, which produced equivalent results to the Zacharias and Wessolek pedotransfer function, which were even better than the predictions obtained from the original Mualem-van Genuchten model, the Soto fractal model, and the pedotransfer function reported by Weynants and Vereecken. The stochastic structure of the calibration data reflects the presence of important soil structural properties, which are not represented by the soil water retention characteristics.
Źródło:
International Agrophysics; 2019, 33, 4; 503-510
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Redefining cities in view of climatic changes “sponge city” - examples of solutions in Chinese cities at risk of flooding - Wuhan, Changde and Jinhua
Redefining cities in view of climatic changes „sponge city” - przykłady rozwiązań w chińskich miastach zagrożonych powodzią - Wuhan, Changde i Jjinhua
Autorzy:
Maciejewska, E.
Powiązania:
https://bibliotekanauki.pl/articles/2083872.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
water retention
green infrastructure
“sponge city”
flood threat
China
Opis:
The article is focused on the problem of green infrastructure, which effectively helps to reduce the effects of floods and water deficit in cities. It presents examples of good practices implemented in China. In the end of 2014, China’s national government initiated the “sponge city” project. A “sponge city” is a city built around the concept of managing water in an ecologically sustainable way by imitating natural hydrological cycles in the city, which translates into the restoration of the ability to absorb, infiltrate, store and purify rainwater in urbanized, highly sealed spaces. In “sponge cities”, flood risk management is included in the mainstream of urban planning and has the appropriate legal framework. The intention is to improve urban resilience through rainwater capture, storage and use by means of green roofs, pavements made of permeable materials, tumbles, rigoles, retention ponds, water squares, rain gardens and creating wetlands parks.
Źródło:
Acta Scientiarum Polonorum. Architectura; 2020, 19, 1; 11-19
1644-0633
Pojawia się w:
Acta Scientiarum Polonorum. Architectura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Priority Areas for Initiating Land Consolidations Related to Erosion and Water Retention in the Landscape, Czech Republic
Autorzy:
Karásek, P.
Konečná, J.
Pochop, M.
Kučera, J.
Podhrázská, J.
Powiązania:
https://bibliotekanauki.pl/articles/124604.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
land consolidation
rural areas
water erosion
wind erosion
water retention
GIS
Opis:
Land consolidations represent a unique tool for managing the problems of the rural space. They help to settle the land property rights and meet the current requirements associated with the protection and formation of a stable, permanently sustainable rural landscape. In the Czech Republic, complex land consolidations have been completed in 1,965 cadastral areas out of the total 13,100, and in 2,134 more they are in the preparation phase (up to 1st September 2015). It means that about 60% of cadastral areas in CR still await land consolidation. Our study aimed to localize the priority localities (cadastral areas and regions) for preferential implementation of land consolidation. The authors selected three thematic factors to determine the risk of their occurrence in particular localities and, consequently, the need to initiate the land consolidation. The analysis is based on the assumption that the cadastral areas where land consolidations have been completed or are under way have already dealt with the above-mentioned risk factors or will do so soon. Therefore, such areas have not been included into our study. The key selected thematic factors relevant for the preferential implementation of land consolidation include: the risk of water and wind erosion in arable land, water management, and water retention in the landscape. For each of these three factors, a map of preferential localities (based on the degree of risk/suitability) was processed for initiation of land consolidation. At the same time, a simple multi-criteria analysis of the extent of the Czech Republic’s erosion (water and wind) has been prepared. The result of this analysis is the ranking of regions according to the degree of risk of erosion. The most vulnerable regions of the Czech Republic include Jihomoravský (South Moravian Region), Středočeský (Central Bohemia) and Pardubice.
Źródło:
Journal of Ecological Engineering; 2018, 19, 4; 16-28
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of solid phase wettability on water transport and retention in peat enriched soil affected by freezing-thawing
Autorzy:
Hajnos, M.
Bowanko, G.
Jozefaciuk, G.
Glowacki, R.
Powiązania:
https://bibliotekanauki.pl/articles/26449.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
freezing
soil wettability
soil
wettability
thawing
water retention
peat
Źródło:
International Agrophysics; 2002, 16, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł

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