We studied total mercury (THg) and methylmercury (MeHg) in eight streams, located in Oregon, Wisconsin, and Florida, that span large ranges in climate, landscape characteristics, atmospheric Hg deposition, and water chemistry. While atmospheric deposition was the source of Hg at each site, basin characteristics appeared to mediate this source by providing controls on methylation and fluvial THg...

Acknowledgements I thank my supervisor, Doc. RNDr. Roman Barták, Ph.D., for his patient guidance and for his critical comments that helped me make this thesis better. I thank my parents for their continuous support through the work on this thesis and through all my studies. I hereby declare that I have written this diploma thesis on my own and solely with the use of cited references. I agree wi...

Teze doktorské disertačńı práce k źıskáńı vědeckého titulu “doktor věd” ve skupině věd fyzikálně-matematických Flows in Graphs and Related Problems název disertace Komise pro obhajoby doktorských disertaćı v oboru Matematické struktury Jméno uchazeče: doc. RNDr. Martin Kochol, CSc. Pracovǐstě uchazeče: Matematický ústav Slovenskej akadémie vied, Štefánikova 49, 814 73 Bratislava 1, SR Mı́sto a d...

In this dataset paper we describe our work on the collection and analysis of public WhatsApp group data. Our primary goal is to explore the feasibility of collecting and using WhatsApp data for social science research. We therefore present a generalisable data collection methodology, and a publicly available dataset for use by other researchers. To provide context, we perform statistical explor...

This paper introduces a new approach for utilizing the multi-resolution wavelet decomposing for shoreline change rate detection from RADARSAT-1 SAR image. The wavelet approximation of the Two RADARSAT-1 SAR images (1998-2004) defined by the sum two-dimensional wavelet functions at different scales and locations. The raw RADARSAT-1 SAR images were decomposed into a low and high frequencies image...

We studied how soil pH (pHs 4 to 8) influenced the mineralization of low-molecular-weight (LMW)-dissolved organic carbon (DOC) compounds, and how this compared with differences in microbial community structure. The mineralization of LMW-DOC compounds was not systematically connected to differences in soil pH, consistent with soil respiration. In contrast, the microbial community compositions di...

Spatial and temporal patterns in streamwater acidity are ecologically important, but difficult to measure in parallel. Here we present the spatial distribution of streamwater chemistry relevant to acidity from 60 stream sites distributed throughout a 67 km2 boreal catchment, sampled during a period of winter baseflow (high pH) and during a spring flood episode (low pH). Sites were grouped based...

WOLF, GEORGE. Efect of deoxycorticosterone on sodium appetite of intact and adrenalectomised rats. Am. J. Physiol. 208(6) : I 2%~ 1285. 1g65.-The effect of DOC on sodium chloride (saline) intake was studied in intact and adrenalectomized rats under “two-bottle” self-selection conditions. It was found that in adrenalectomized rats low doses of DOC produced a decrease in saline intake (restoratio...