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Damian Zięba
Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland

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Journal article
Published: 09 April 2021 in Water
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Small streams in urbanized rural areas receive loads of P from various, often episodic, sources. This paper addresses, through a tracer test with 32P, retention and transport of a pulse input of phosphorus in a 2.6 km long stretch of a channelized second-order lowland stream. Tritiated water was introduced alongside the 32P-labelled ortophosphate in order to isolate the influence of the hydrodynamic factors on P behavior. Tracer concentrations in unfiltered water samples were measured by liquid scintillation counting. Four in-stream and five hyporheic breakthrough curves were collected at four points along the stream, two of which encompass a beaver dam impoundment. The overall retention efficiency of 32P along the studied reach was 46%. The transient storage transport model OTIS-P provided reasonable fits for in-stream breakthrough curves (BTCs) but failed at reproducing the hyporheic BTCs. The overall small effect of transient storage on solute transport was higher in the stretch with a more pronounced surface storage. Transient storage and phosphorus retention were not enhanced in the beaver dam impoundment.

ACS Style

Damian Zięba; Przemysław Wachniew. Phosphorus Transport in a Lowland Stream Derived from a Tracer Test with 32P. Water 2021, 13, 1030 .

AMA Style

Damian Zięba, Przemysław Wachniew. Phosphorus Transport in a Lowland Stream Derived from a Tracer Test with 32P. Water. 2021; 13 (8):1030.

Chicago/Turabian Style

Damian Zięba; Przemysław Wachniew. 2021. "Phosphorus Transport in a Lowland Stream Derived from a Tracer Test with 32P." Water 13, no. 8: 1030.

Journal article
Published: 12 July 2020 in Sustainability
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The concentration of indoor suspended particulate matter is considered to be one of the main factors that affect health and quality of life. In Poland, in response to the pressure of public opinion, a few thousand air purifiers have been installed in public buildings where children spend time. However, another factor that also impacts upon the quality of indoor air, namely increased CO2 mixing ratios, is frequently overlooked. The only way to remove CO2 excess from interiors is through intensive ventilation. This is often an action at odds with the need to maintain low concentrations of particulate matter in indoor air. Two methods are presented to assess the rate of air exchange using CO2 or particulate matter as a tracer. One of the methods using indoor/outdoor PM (particulate matter) concentrations is based on the use of box models for analysis. The second one uses indoor CO2 concentration change analysis. At the tested locations, they showed large deviations of the determined values of the air exchange coefficients from its limits. Both methods showed consistent ventilation parameters estimation.

ACS Style

Jakub Bartyzel; Damian Zięba; Jarosław Nęcki; Mirosław Zimnoch. Assessment of Ventilation Efficiency in School Classrooms Based on Indoor–Outdoor Particulate Matter and Carbon Dioxide Measurements. Sustainability 2020, 12, 5600 .

AMA Style

Jakub Bartyzel, Damian Zięba, Jarosław Nęcki, Mirosław Zimnoch. Assessment of Ventilation Efficiency in School Classrooms Based on Indoor–Outdoor Particulate Matter and Carbon Dioxide Measurements. Sustainability. 2020; 12 (14):5600.

Chicago/Turabian Style

Jakub Bartyzel; Damian Zięba; Jarosław Nęcki; Mirosław Zimnoch. 2020. "Assessment of Ventilation Efficiency in School Classrooms Based on Indoor–Outdoor Particulate Matter and Carbon Dioxide Measurements." Sustainability 12, no. 14: 5600.

Conference paper
Published: 05 July 2019 in E3S Web of Conferences
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Krakow is a city in southern Poland inhabited by about 741,000 people. However, Krakow’s agglomeration includes neighboring cities, hence more than 1 million people live there. The agglomeration is struggling with the problem of air pollution. In 2016, admissible average annual concentrations of PM10 (40 μg / m3) were exceeded at all measuring points. Furthermore, daily PM10 concentrations were regularly exceeded in the winter, which is associated with increased coal combustion during this period. Fortunately, interest in the subject of air quality in the world is constantly growing. People are more often aware of the negative impact on health of chemical compounds present in particulate matter (PM) such as Polycyclic Aromatic Hydrocarbons (PAHs), which were proved to be cancerogenic and mutagenic for people. That is why it is so important to study their presence in the ambient air. PM10 collected in the center of Wadowice (22.12.2016 – 13.10.2017) were investigated. PAHs were extracted from particulate matter and analysed applying the GC/MS technique. The results are discussed in the article.

ACS Style

Alicja Skiba; Katarzyna Styszko; Przemysław Furman; Natasza Dobrowolska; Magdalena Kistler; Anne Kasper-Giebl; Damian Zięba. Polycyclic aromatic hydrocarbons (PAHs) associated with PM10 collected in Wadowice, South Poland. E3S Web of Conferences 2019, 108, 02007 .

AMA Style

Alicja Skiba, Katarzyna Styszko, Przemysław Furman, Natasza Dobrowolska, Magdalena Kistler, Anne Kasper-Giebl, Damian Zięba. Polycyclic aromatic hydrocarbons (PAHs) associated with PM10 collected in Wadowice, South Poland. E3S Web of Conferences. 2019; 108 ():02007.

Chicago/Turabian Style

Alicja Skiba; Katarzyna Styszko; Przemysław Furman; Natasza Dobrowolska; Magdalena Kistler; Anne Kasper-Giebl; Damian Zięba. 2019. "Polycyclic aromatic hydrocarbons (PAHs) associated with PM10 collected in Wadowice, South Poland." E3S Web of Conferences 108, no. : 02007.

Journal article
Published: 26 April 2019 in International Review of Financial Analysis
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The growing cryptocurrency market has attracted the attention from many investors worldwide, mainly due to the ease of entering the market and its extremely volatile character. The main aim of this paper is to examine interdependencies between log-returns of cryptocurrencies, with the special focus on Bitcoin. Based on implications from the literature, we use methods dedicated for studying the stock market and apply the two-step analysis, comparing results between two subsequent periods. Results obtained using Minimum Spanning Tree (MST) method show that cryptocurrencies form hierarchical clusters, consistently over two separate periods, indicating potential topological properties of the cryptocurrency market. Then, using Vector Autoregression (VAR) model, we study the transmission of demand shocks within clusters. Results show that changes in Bitcoin price do not affect and are not affected by changes in prices of other cryptocurrencies. However, results indicate that findings obtained for Bitcoin shall not be generalized to the entire cryptocurrency market.

ACS Style

Damian Zięba; Ryszard Kokoszczynski; Katarzyna Śledziewska. Shock transmission in the cryptocurrency market. Is Bitcoin the most influential? International Review of Financial Analysis 2019, 64, 102 -125.

AMA Style

Damian Zięba, Ryszard Kokoszczynski, Katarzyna Śledziewska. Shock transmission in the cryptocurrency market. Is Bitcoin the most influential? International Review of Financial Analysis. 2019; 64 ():102-125.

Chicago/Turabian Style

Damian Zięba; Ryszard Kokoszczynski; Katarzyna Śledziewska. 2019. "Shock transmission in the cryptocurrency market. Is Bitcoin the most influential?" International Review of Financial Analysis 64, no. : 102-125.

Journal article
Published: 01 January 2016 in Aerosol and Air Quality Research
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Records of trace gas composition of the atmosphere originating from mountain stations are difficult to interpret in terms of continental gas balances due to complex topography and local wind patterns. Kasprowy Wierch station, located in the High Tatra Mountains, Poland, provides datasets to European GHG databases and can be used for regional and continental balances of trace gases in Earth’s atmosphere. Although it suffers from strong influence of local valley winds, the concentration record obtained at Kasprowy Wierch contains also a discernible fraction of methane (up to 100 ppb) emitted mainly by large regional source of this gas (Silesian Coal Basin) located ca. 150 km north-west of Kasprowy Wierch. Comparison of GOSAT satellite CH4 record in the pixel including High Tatras at the level of 850 hPa with the data obtained at Kasprowy Wierch mountain station revealed surprisingly good correlation, even for relatively short time intervals

ACS Style

Jarosław M. Nęcki; Michał Gałkowski; Łukasz Chmura; Christoph Gerbig; Miroslaw Zimnoch; Damian Zięba; Jakub Bartyzel; Wojciech Wołkowicz; Kazimierz Różański. Regional Representativeness of CH4 and N2O Mixing Ratio Measurements at High-Altitude Mountain Station Kasprowy Wierch, Southern Poland. Aerosol and Air Quality Research 2016, 16, 568 -580.

AMA Style

Jarosław M. Nęcki, Michał Gałkowski, Łukasz Chmura, Christoph Gerbig, Miroslaw Zimnoch, Damian Zięba, Jakub Bartyzel, Wojciech Wołkowicz, Kazimierz Różański. Regional Representativeness of CH4 and N2O Mixing Ratio Measurements at High-Altitude Mountain Station Kasprowy Wierch, Southern Poland. Aerosol and Air Quality Research. 2016; 16 (3):568-580.

Chicago/Turabian Style

Jarosław M. Nęcki; Michał Gałkowski; Łukasz Chmura; Christoph Gerbig; Miroslaw Zimnoch; Damian Zięba; Jakub Bartyzel; Wojciech Wołkowicz; Kazimierz Różański. 2016. "Regional Representativeness of CH4 and N2O Mixing Ratio Measurements at High-Altitude Mountain Station Kasprowy Wierch, Southern Poland." Aerosol and Air Quality Research 16, no. 3: 568-580.

Journal article
Published: 01 July 2013 in European Journal of Soil Science
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Uptake of atmospheric hydrogen by soils constitutes the most important sink of this gas at the global scale. However, little is known about the strength and spatio‐temporal variability of this sink. We present the results of a systematic study aimed at characterizing hydrogen uptake by urban soils. The study was carried out at two field sites in Krakow, southern Poland. The measured fluxes of hydrogen to soils revealed distinct seasonality, with large values (up to 40 µmol hour−1 m−2) recorded during summer months and small values (between 5 and 10 µmol hour−1 m−2) during winter. Temperatures in the top 6 cm of the soil profile varied during the study from −9 to +24°C, while volumetric soil water content fluctuated between 15 and 50%. Measurable hydrogen fluxes were also observed when soil temperatures were less than zero. The results were interpreted in the context of seasonal changes of local climate and air and soil temperature, soil water content and amount of rainfall. Mixing conditions at the air–soil interface were also considered. Modelling of H2 uptake was performed with a two dimensional diffusion transport model, with contrasting assumptions about distribution and intensity of the hydrogen sink in the soil profile. The model results suggest that conditions in the uppermost soil layer exert a decisive control on measured hydrogen uptake rates. The measured hydrogen flux can be reproduced by the transport model only if significant reduction of the soil water content in the uppermost layer of the soil is postulated. This finding has important implications for the parameterization of hydrogen uptake rates in models of the global H2 budget.

ACS Style

Jakub Bartyzel; J. M. Necki; Damian Zięba; K. Rozanski; M. Gasiorek. Uptake of atmospheric hydrogen by soils: a case study from southern Poland. European Journal of Soil Science 2013, 64, 597 -609.

AMA Style

Jakub Bartyzel, J. M. Necki, Damian Zięba, K. Rozanski, M. Gasiorek. Uptake of atmospheric hydrogen by soils: a case study from southern Poland. European Journal of Soil Science. 2013; 64 (5):597-609.

Chicago/Turabian Style

Jakub Bartyzel; J. M. Necki; Damian Zięba; K. Rozanski; M. Gasiorek. 2013. "Uptake of atmospheric hydrogen by soils: a case study from southern Poland." European Journal of Soil Science 64, no. 5: 597-609.