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2322. Arnošt Kubeša jako představitel folklorního hnutí na Valašsku

Creator:
Volčík, Ondřej
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
folklore movement, folklorism, Moravian Wallachia, Wallachian circle, Wallachian Open-Air Museum, and Wallachian Year
Language:
Czech
Description:
The celebration of The Wallachian Year held in 1925 significantly influenced the development of folklore movement in the ethnographic region of Moravian Wallachia. This event inspired Arnošt Kubeša to promote traditional folk music and dances as part of his teaching career. For this purpose he founded with his students the first Wallachian Circle in the mid-1930s, he organised its public performances (as well as the first foreign tour of this kind of an ensemble) and continued to found other circles in the end. After his involuntary retirement from the education system due to his "political and ideological unreliability" and his withdrawal from the leading positions in folklore movement associations, Arnošt Kubeša started a new career as a museum employee. This study refers to his activities which contributed to the development of folklore in its second existence.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2326. Ars Montana. Umělecký a kulturní transfer v otevřeném prostoru česko-saského Krušnohoří na prahu raného novověku, edd. Michaela Hrubá - Michaela Ottová - Jan Royt

Creator:
František Šmahel
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
medievalistika, medievalistics, ikonografie, iconography, dějiny hornictví, history of mining, hagiografie, hagiography, konfesionalizace, confessionalisation, novověk, modern history, Krušné hory (Česko a Německo : oblast), Krušné hory Mountains Region (Czechia and Germany), 8, and 930
Language:
Czech
Description:
[autor anotace] František Šmahel.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2329. Arsenic and zinc in impoundment materials and related stream sediments from a polluted area in Eastern Slovakia: distribution, mobility, and water quality

Creator:
Jankulár, Michal, Hiller, Edgar, Jurkovič, Ľubomír, Veselská, Veronika, and Majzlan, Juraj
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
arsenic, zinc, impoundment, mobility, stream sediment, bioavailability, Slovakia, arzén, zinok, odkalisko, pohyblivosť, riečny sediment, bioprístupnosť, and Slovensko
Language:
Slovak
Description:
The impoundment located near the village of Poša in eastern Slovakia is a significant source of arsenic. Waters penetrating the impoundment become enriched in As and other potentially toxic elements. As a consequence, the Kyjov brook and the Ondava River have been extensively polluted by arsenic. Although, zinc is of minor environmental significance regarding pollution in the area, it was also monitored to compare its behaviour with that of arsenic. The mobility and solid-state distribution of As and Zn in the impoundment materials and stream sediments have been investigated using a five-step sequential extraction procedure. Moreover, to investigate the bioavailability of As and Zn, two native plant species (Typha latifolia and Phragmites australis) growing at the site were collected and analyzed. The As concentrations in representative sediment and water samples ranged from 36.28 to 3208.35 mg kg-1 and from 4.05 to 612.8 μg l-1, respectively, both being many times above the background levels. The Zn concentrations of environmental importance were found to be high only in the impoundment materials (up to 3390 mg kg-1). Although a part of As was present in a readily soluble form (6.62%), the majority of As was mainly associated with Fe/Mn oxides (37.30%) and residual phases (51%). Similarly, the most dominant fractions for zinc distribution were Fe/Mn oxides (38.5%), residual (34%) and exchangeable (18%). Combined results of the sequential extraction tests as well as chemical and mineralogical analysis indicated that As mobilisation potential from the sediments is likely controlled by Fe/Mn oxyhydroxide mineral phases. Plants growing in the impoundment had As concentrations 10 to 100 times higher than the same plants growing in a relatively nonpolluted area, indicating an enhanced bioavailability of arsenic in the area with high total As contents in the impoundment materials. and Odkalisko, ktoré sa nachádza pri obci Poša (východné Slovensko), je významným zdrojom arzénu. Vody presakujúce cez materiál uložený v odkalisku sa tak obohacujú o As a ďalšie potenciálne toxické prvky. Dôsledkom je výrazné znečistenie toku Kyjov a rieky Ondava arzénom. Aj keď v tejto oblasti zinok nepredstavuje až tak veľký environmentálny problém, je zahrnutý v tejto štúdii s cieľom porovnať správanie sa týchto dvoch potenciálne toxických prvkov. Na štúdium pohyblivosti a distribúcie As a Zn v materiáloch odkaliska a v riečnych sedimentoch sa použila päťkroková sekvenčná extrakcia. Okrem toho sme skúmali bioprístupnosť As a Zn v dvoch typoch rastlín (Typha latifolia a Phragmites australis), ktoré prednostne rastú na odkalisku. Koncentrácie As v odobratých vzorkách sedimentov boli v intervale od 36,28 do 3208,35 mg kg-1 a v povrchových vodách od 4,05 do 612,8 μg l-1. Tieto koncentrácie sú oveľa vyššie ako pozaďové hodnoty pre danú oblasť. Bolo zistené, že koncentrácie Zn významné z hľadiska znečistenia sú vysoké len v odkaliskových materiáloch (až 3390 mg kg-1). Aj keď určitý podiel As v sedimentoch bol prítomný v ľahko rozpustnej forme (6,62 %), väčšina As bola viazaná na oxidy Fe a Mn (37,30 %) a reziduálne fázy (51 %). Podobné to bolo pri Zn, pričom najdôležitejšie pre jeho distribúciu boli oxidy Fe a Mn (38,5 %), reziduálne fázy (34 %) a vymeniteľné pozície (18 %). Kombinované výsledky sekvenčných extrakcií ako aj chemickej a mineralogickej analýzy ukázali, že mobilizácia As zo sedimentov úzko súvisí s prítomnými minerálmi zo skupiny oxyhydroxidov Fe a Mn. Rastliny vyskytujúce sa na odkalisku obsahovali 10- až 100-násobne vyššie koncentrácie As ako tie isté rastliny odobraté z relatívne neznečistenej oblasti. Táto skutočnosť poukazuje na zvýšenú bioprístupnosť arzénu na skúmanom odkalisku, ktoré je typické vysokými obsahmi celkového As v uložených materiáloch.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2330. Arsenic mobility in stream sediments and impoundment material as evaluated by column and batch experiments

Creator:
Hiller, Edgar, Veselská, Veronika, and Majzlan, Juraj
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
arsenic, release, migration, stream sediment, impoundment, contamination, arzén, uvoľňovanie, migrácia, riečny sediment, odkalisko, and znečistenie
Language:
Slovak
Description:
Arsenic release and its kinetic in severely contaminated stream sediments of the Kyjov brook and impoundment material (eastern Slovakia) using column and batch experiments was studied. The results of the column experiments showed that As release from the solid samples by water was likely controlled by Fe and Mn oxyhydroxides and pH of the sediments and leachates. It was also observed that extraction time was an important factor influencing the As release. The empirical correlations between the rate constants of As release and oxalate-extractable Fe content or total Mn content imply that diffusion in hydrated micropores of amorphous Fe and Mn oxides might be the rate-limiting mechanism of the As release. Although the fractions of As released in column experiments were generally less than 10 % of its total contents, these low fractions represented high absolute amounts of readily available and water-soluble As with a mean value of 83 mg kg-1. This amount of readily available As is approximately 4-times higher than the guideline value for As according to DEFRA UK, based upon ''bioavailable'' concentration, indicating high As availability for plants and living organisms in the studied region. and V štúdii bolo sledované uvoľňovanie arzénu a jeho rýchlosť vo výrazne kontaminovaných riečnych sedimentoch toku Kyjov na východnom Slovensku a materiáli odkaliska použitím kolónových a nádobkových experimentov. Výsledky kolónových experimentov naznačujú, že pravdepodobne najväčší vplyv na uvoľňovanie As vodou majú oxyhydroxidy Fe a Mn a pH výluhov a použitých sedimetov. Ukázalo sa, že aj čas trvania kontaktu kontaminovaných vzoriek s roztokom je dôležitý faktor uvoľňovania As. Nájdené korelácie medzi rýchlostnými konštantami uvoľňovania As a extrahovateľnými obsahmi Fe šťavelanom amónnym ako aj celkovými obsahmi Mn by mohli poukazovať na fakt, že difúzia v hydratovaných mikropóroch amorfných oxyhydroxidov Fe a Mn je hlavný mechanizmus limitujúci rýchlosť uvoľňovania As. Hoci frakcie uvoľneného As v kolónových experimentoch boli celkovo nižšie ako 10 % z jeho totálnych obsahov v skúmaných vzorkách, tieto nízke frakcie predstavujú vysoké obsahy ľahko dostupného a vo vode rozpustného As s priemernou hodnotou 83 mg kg-1. Uvedený obsah ľahko dostupného As je približne 4-krát vyšší ako smernicová hodnota podľa DEFRA UK založená na ''biodostupnej'' koncentrácii As. Toto porovnanie poukazuje na potenciálne vysokú dostupnosť As pre rastliny a živé organizmy v študovanej oblasti
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

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