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Current ichthyofauna of Laka Lake and connected streams
Blabolil, Petr; Draštík, Vladislav; Kočvara, Luboš; Kolařík, Tomáš; Muška, Milan; Peterka, Jiří; Soukalová, Kateřina; Vrba, Jaroslav
2020 - Czech
The aim of this study was determination of Lake Laka and connected streams ichthyofauna. The obtained results, including their evaluation, are included in the report. Cílem studie bylo provedení průzkum ichtyofauny jezera Laka a propojených toků. Zjištěné výsledky včetně jejich hodnocení jsou obsahem zprávy.
Keywords:
Laka; Fish; Lake
Available at various institutes of the ASCR
Current ichthyofauna of Laka Lake and connected streams
The aim of this study was determination of Lake Laka and connected streams ichthyofauna. The obtained results, including their evaluation, are included in the report.
Ichtyological assessment of Lipno Reservoir in 2019
Soukalová, Kateřina; Kubečka, Jan; Jůza, Tomáš; Kočvara, Luboš; Sajdlová, Zuzana; Prachař, Zdeněk
2020 - Czech
The report summarizes the results of a comprehensive survey of the reverse of the Lipno reservoir in 2019. It contains information on the number of individual species, their population recruitment, age composition and distribution. It also contains conclusions and recommendations for management measures. Zpráva shrnuje výsledky komplexního průzkumu rubí obsádky nádrže Lipno v r. 2019. Obsahuje informace o množství jednotlivých druhu, jejich populačním doplňku, věkovém složení a distribuci. Obsahuje též závěry a doporučení pro hospodářská opatření.
Keywords:
Lipno; Fish; Dam
Available at various institutes of the ASCR
Ichtyological assessment of Lipno Reservoir in 2019
The report summarizes the results of a comprehensive survey of the reverse of the Lipno reservoir in 2019. It contains information on the number of individual species, their population recruitment, ...
Optimization of culture conditions of human HepG2 liver cells on 4 types of nano- and micro-fiber carriers
Rössner ml., Pavel
2020 - Czech
The technology describes the optimization of the number of deployed human hepatocytes HepG2, suitable for use in the field of toxicological verification of new drugs or foods, on a 3D culture system consisting of four types of nano- and microfiber carriers. The motivation for finding suitable models for testing potentially genotoxic effects of drugs is the low relevance of tissue models used in the first stages of preclinical evaluation of new substances, as well as the reduction of animal testing. Technologie popisuje optimalizaci počtu nasazovaných lidských hepatocytů HepG2, vhodných pro využívání v oblasti toxikologického ověřování nových léčiv či potravin, na 3D kultivační systém tvořený čtyřmi typy nano- a mikrovlákenných nosičů. Motivací pro hledání vhodných modelů testování potenciálně genotoxických účinků léčiv je nízká relevance tkáňových modelů užívaných v prvních fázích preklinického hodnocení nových látek a také redukce testování na zvířatech.
Keywords:
nanofiber carriers; toxicology; HepG2
Available at various institutes of the ASCR
Optimization of culture conditions of human HepG2 liver cells on 4 types of nano- and micro-fiber carriers
The technology describes the optimization of the number of deployed human hepatocytes HepG2, suitable for use in the field of toxicological verification of new drugs or foods, on a 3D culture system ...
Book of abstracts from XVII. Czech Fisheries and Ichthyological Conference, České Budějovice
Holubová, Michaela; Blabolil, Petr
2020 - Czech
The publication contains standard and extended abstracts of contributions from the 17th Czech Fisheries and Ichthyological Conference held online in November 2020. V publikaci jsou uvedeny standardní i rozšířené abstrakty příspěvků z XVII. České rybářské a ichtyologické konference konané on-line v listopadu 2020.
Keywords:
Fisheries
Available at various institutes of the ASCR
Book of abstracts from XVII. Czech Fisheries and Ichthyological Conference, České Budějovice
The publication contains standard and extended abstracts of contributions from the 17th Czech Fisheries and Ichthyological Conference held online in November 2020.
Hydroacoustic assessment of the fish stock in Lake Balaton in 2019.
Tušer, Michal; Muška, Milan
2020 - Czech
The presented report summurizes results of hydroacoustic surveys in Lake Balaton, including both littoral and open-water regions in all three basins of the lake. The report is describing the spatial distribution and size-composition of the fish stock in Lake Balaton in autumn 2019. The results are presented in terms of fish density, biomass and fish size distribution for particular hydroacoustic transects and lake basins. In the report are summarized all available data from previous hydroacoustic surveys and the development of fish stock is discussed. Předkládaná zpráva sumarizuje výsledky hydroakustického průzkumu jezera Balaton. Průzkum zahrnoval litorální i pelagické habitaty v rámci všech 3 částí jezera. Zpráva popisuje prostorovou distribuci a velikostni slozeni rybi obsádky jezera Balaton na podzim 2019. Výsledky jsou prezentovány jako hustota ryb, jejich biomasa a velikostní složení pro jednotlivé transekty hydroakustického průzkumu i souhrně pro jednotlivé části jezera. Zpráva také shrnuje veškerá dostupná data z předchozích průzkumů jezera a diskutuje vývoj obsádky jezera Balaton.
Keywords:
Balaton lake; Fish distrubution; Hydroacoustic survey
Available at various institutes of the ASCR
Hydroacoustic assessment of the fish stock in Lake Balaton in 2019.
The presented report summurizes results of hydroacoustic surveys in Lake Balaton, including both littoral and open-water regions in all three basins of the lake. The report is describing the spatial ...
Copper complexes with triazoles
Jaklová Dytrtová, Jana; Jakl, M.
2020 - English
Triazoles are artificial chemicals used as fungicides as well as for pharmaceutical treatment. However, their reactivity is highly influenced by the presence of other chemicals. Especially, the presence of copper cations changes the reactivity of triazole by theoretically unexpected way. We have studied the interactions of the triazole ring with copper cations to help explain the reactivity of triazoles as a group.
Keywords:
triazoles; Cu(I); Cu(II); mass spectrometry; ESI-MS; complexes
Available at various institutes of the ASCR
Copper complexes with triazoles
Triazoles are artificial chemicals used as fungicides as well as for pharmaceutical treatment. However, their reactivity is highly influenced by the presence of other chemicals. Especially, the ...
Separation of triazoles from real samples with capillary electrophoresis
Kovač, Ishak; Jakl, M.; Šolínová, Veronika; Jaklová Dytrtová, Jana
2020 - English
The CE has become one of the advantageous tools in fungicides analysis in complex matrices due to its simplicity and separation efficiency. The separation of a group of thee triazole (i.e. penconazole, tebuconazole, and cyproconazole) fungicides was achieved with CD-MEKC with anionic Sg-CD as a selector at pH=4,8. The background electrolyte consisted of TRIS phosphate buffer (50 mmol/L) and 15 mmol/L SDS. The separation was performed on uncoated fused silica capillary with 500/425 mm (total/effective) length under -15 kV separation voltage. Achieved LOD values with this method were: 0,73, 1,88, 0,60, 1,18 (umol/L) for penconazole, tebuconazole, cyproconazole A and B respectively.
Keywords:
capillary electrophoresis; penconazole; tebuconazole; cyproconazole; γ-cyclodextrin
Available at various institutes of the ASCR
Separation of triazoles from real samples with capillary electrophoresis
The CE has become one of the advantageous tools in fungicides analysis in complex matrices due to its simplicity and separation efficiency. The separation of a group of thee triazole (i.e. ...
Application potential of screening in vitro toxicological assays in qualitative risk assessment of nanomaterials
Závodná, Táňa; Topinka, Jan; Danihelka, J.
2020 - English
Undeniable benefits of engineered nanomaterials might be discredited by their potential enhanced or unexpected toxicity arising from nano-specific properties and behavior. An analysis of the applicability of the traditional chemical risk assessment approach in nanomaterials revealed high levels of uncertainty in both hazard characterization and exposure assessment due to the lack of relevant validated methods and reliable data. This indicates the limited capability of the conventional risk assessment approach to ensure the safe use of nanomaterials. Based on the identified uncertainties, the control banding approach was proposed as a suitable tool for preliminary qualitative risk assessment of nanomaterials in occupational settings. Control banding categorizes hazard and exposure into levels referred to as bands. The combination of the hazard and exposure bands results in a risk band determining the necessary degree of control and regulatory measures. To decrease the number of cases where, based on the precautionary principle, unavailable experimental or field data would lead to the assignment to the highest hazard category requiring costly exposure control, screening evaluation of nanomaterial toxicity was proposed as an additional decision criterion. For this purpose, a battery of in vitro toxicological assays enabling screening evaluation of potential toxic effects of NMs was proposed. The assays evaluate endpoints covering basic toxic effects of substances (cytotoxicity, genotoxicity), as well as known nonspecific mechanisms of toxicity typical for nanomaterials (oxidative stress, inflammation). The proposed risk management strategy is intended to assist small and medium-sized enterprises to implement adequate measures to ensure employee safety.
Keywords:
toxicity; tool; industrial poisons
Available at various institutes of the ASCR
Application potential of screening in vitro toxicological assays in qualitative risk assessment of nanomaterials
Undeniable benefits of engineered nanomaterials might be discredited by their potential enhanced or unexpected toxicity arising from nano-specific properties and behavior. An analysis of the ...
Recommended adaptation and mitigation measures in risk areas of natural occurrence fires in the light of the changing climate
Trnka, Miroslav; Čermák, Petr; Kudláčková, Lucie; Balek, Jan; Semerádová, Daniela; Brovkina, Olga; Zemek, František; Štěpánek, Petr; Zahradníček, Pavel; Bláhová, Monika; Cienciala, Emil; Beranová, J.; Zatloukal, V.; Albert, J.; Tumajer, J.; Možný, M.; Hájková, L.; Chuchma, F.
2020 - Czech
The methodology formulates graded adaptation and mitigation measures to mitigate fire risk and spread fire in the countryside (forest and agricultural land). To this end, a variant assessment procedure is presented fire risk according to the user's data capabilities. The algorithmization of fire risk in forests is based on forest typology to assess habitats, and adds forest vegetation characteristics. On agricultural Soil agronomic factors include crop type, cover cover, habitat and water characteristics regime. For both territorial categories, the expected impacts of climate change on fire risk are given habitat in the medium term (by 2050). Methodology in conclusion on a case study demonstrates the possibilities of using the model tool FlamMap for the analysis of fire characteristics. Metodika formuluje odstupňovaná adaptační a mitigační opatření ke zmírnění požárního rizika a šíření požáru v krajině (les a zemědělská půda). K tomu je předkládán postup variantního posouzení požárního rizika podle datových možností uživatele. Algoritmizace požárního rizika v lesích vychází z lesnické typologie k posouzení stanoviště, a přidává charakteristiky lesní vegetace. Na zemědělské půdě pak agronomické faktory zahrnují druh plodiny, souvislost pokryvu, vlastnosti stanoviště a vodní režim. Pro obě územní kategorie jsou uvedeny předpokládané dopady změny klimatu na požární riziko stanoviště ve střednědobém horizontu (k roku 2050). Metodika závěrem na příkladové studii demonstruje možnosti uplatnění modelového nástroje FlamMap k analýze požárních charakteristik.
Keywords:
adaption; mitigation; wildfire; clima
Available at various institutes of the ASCR
Recommended adaptation and mitigation measures in risk areas of natural occurrence fires in the light of the changing climate
The methodology formulates graded adaptation and mitigation measures to mitigate fire risk and spread fire in the countryside (forest and agricultural land). To this end, a variant assessment ...
Microplastics and their removal from water using sorbents.
Spáčilová, Markéta; Dytrych, Pavel; Krejčíková, Simona; Fajgar, Radek; Šolcová, Olga
2020 - Czech
The occurrence of contaminants in water sources, microplastics or other organic pollutants, has been an increasing environmental problem. This issue is related to mapping of their occurrence in an aquatic environment and with finding of possible ways regarding their elimination. The prepared microplastic particles of five most-frequently used plastics (polyethylene, polyamide, polytetrafluoroethylene, polyethylene glycol terephthalate and polystyrene) were characterized by the scanning electron microscopy (SEM), the Raman spectroscopy and the infrared spectroscopy (IR). The obtained microplastic particles were used for preparation of simulated water contaminated with microplastics. The prepared simulated samples of water contaminated with microplastics were used for the development of a methodology for determining the number of contained microplast particles. Furthermore, the possibilities of a microplastic removal from simulated samples by sorbents based on natural bentonites and zeolites were tested. It was confirmed that the effectiveness of sorbents depends on their composition and textural properties and could be increased by their modification. Zvýšený výskyt cizorodých látek ve vodních zdrojích, ať už mikroplastů či dalších jiných organických kontaminantů je v současné době stále se zvyšující environmentální problém. Tato problematika úzce souvisí se zmapováním jejich výskytu ve vodním prostředí, a dále také s možnými způsoby jejich odstranění. V rámci práce byla nejprve provedena charakterizace připravených mikroplastových částic pěti nejčastěji používaných plastů (polyethylen, polyamid, polytetrafluorethylen, polyethylenglykoltereftalát a polystyren) pomocí skenovací elektronové mikroskopie (SEM), Ramanovy spektroskopie a infračervené spektroskopie (IČ). Tyto mikroplastové částice byly použity pro přípravu simulovaných vod kontaminovaných mikroplasty. Připravené simulované vzorky vod kontaminovaných mikroplasty byly využity pro vývoj metodiky určení počtu obsažených částic mikroplastů. Dále byly testovány možnosti odstranění mikroplastů ze vzorků pomocí sorbentů na bázi přírodních bentonitů a zeolitů. Bylo potvrzeno, že účinnost sorbentů závisí na jejich složení a texturních vlastnostech a může být zvýšena pomocí jejich modifikace.
Keywords:
bentonity; microplastics; sorption
Available in digital repository of the ASCR
Microplastics and their removal from water using sorbents.
The occurrence of contaminants in water sources, microplastics or other organic pollutants, has been an increasing environmental problem. This issue is related to mapping of their occurrence in an ...
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