No (6907)
Yes (1363)
Number of found documents:
8270
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Electrochemically Investigated pH-dependent Redox Properties of Copper Complexes of Azamacrocyclic Ligands
Koláčná, Lucie; Maďar, M.; Kubíček, V.; Ludvík, Jiří
2023 - Czech
Investigated Cu(II) complexes are based on plain or cross-bridged cyclam. The\nelectrochemically inactive cyclam was modified by carboxylate, phosphonate, or phenolate\npendant arms. Cu(II) represents the main redox center of the complexes. Modification of the\nligand causes a changed pattern of complex redox response in buffered aqueous solution.\nIrreversible Cu(II) reduction results in complex decomposition to amalgamated copper and\nligand in excess. After Cu(0) electrochemical in situ re-oxidation, copper and ligand are recomplexed.\nComplexes undergo isomerization, accelerated by increasing the temperature. The\ninfluence of pH on complex isomerization and the reversibility of its reduction was described. Molekulární elektronika je progresivní směr moderní materiálové chemie. Zabývá se vývojem\nelektronických prvků na úrovni jedné molekuly. Nejdůmyslnější molekulární elektroniku\nnajdeme v přírodě v podobě metaloenzymů. Jedním ze směrů výzkumu jejich modelů jsou\nkomplexy různě substituovaných azamakrocyklů. Předností těchto molekul je jejich stabilita a\ndobře definovaná syntéza.
Keywords:
cyclam; Cu(II) complexes; pendant arms
Available on request at various institutes of the ASCR
Electrochemically Investigated pH-dependent Redox Properties of Copper Complexes of Azamacrocyclic Ligands
Investigated Cu(II) complexes are based on plain or cross-bridged cyclam. The\nelectrochemically inactive cyclam was modified by carboxylate, phosphonate, or phenolate\npendant arms. Cu(II) represents ...
Determination of Selected Natural Psychoactive Substances in Organic Matrices at 3D Printed Electrodes
Choińska-Mlynarczyk, Marta; Šestáková, Ivana; Navrátil, Tomáš
2023 - English
Psilocybin and its derivative psilocin are popular psychoactive substances both as experimental\ntreatments in clinical trials and as illicit drugs. Their potential ability to influence the human\nbrain entails the need for a fast, inexpensive, selective, and sensitive method of their\ndetermination. The aim of our study was the development of new 3D-printed electrodes which\nfulfill these demands and are useful for medical, toxicological, and forensic purposes.\nSuccessful development allows determining in real matrices (human plasma and dried\nmushrooms) concentrations of the order of 1 μmol dm-3.\n
Keywords:
natural psychoactive substances; 3D-printed electrodes; psilocin; psilocybin
Available on request at various institutes of the ASCR
Determination of Selected Natural Psychoactive Substances in Organic Matrices at 3D Printed Electrodes
Psilocybin and its derivative psilocin are popular psychoactive substances both as experimental\ntreatments in clinical trials and as illicit drugs. Their potential ability to influence the ...
Mesophilous grassland butterflies of European interest under climate changes (Lycaena dispar, Lycaena helle, Phengaris nausithous, Phengaris teleius, Euphydryas aurinia)
Vrba, Pavel; Faltýnek Fric, Zdeněk; Rindoš, Michal; Hájková, K.; Konvička, Martin
2023 - Czech
Methodological material summarizing variants of the habitat conservation principles for butterflies inhabitting mesophilic and humid grasslands under various scenarios of climate change. The species of interest, protected by the EU Habitats Directive, are Euphydryas aurinia, Phengaris nausithous, Phengaris teleius, Lycaena dispar and Lycaena helle. It includes the predictions of suitable locations for spontaneous or assisted colonization. Metodický materiál shrnující varianty zásad péče o stanoviště motýlů mezofilních a vlhkých nelesních stanovišť při různých predikovaných variantách klimatické změny. Zájmovými druhy, chráněnými Směrnicí o stanovištích EU, je hnědásek chrastavcový (Euphydryas aurinia), modrásek bahenní (Phengaris nausithous), modrásek očkovaný (Phengaris teleius), ohniváček černočárný (Lycaena dispar) a ohniváček rdesnový (Lycaena helle). Součástí je predikce vhodných lokalit pro spontánní nebo asistovanou kolonizaci.
Keywords:
climatic modelling; Czech Republic; species conservation
Available at various institutes of the ASCR
Mesophilous grassland butterflies of European interest under climate changes (Lycaena dispar, Lycaena helle, Phengaris nausithous, Phengaris teleius, Euphydryas aurinia)
Methodological material summarizing variants of the habitat conservation principles for butterflies inhabitting mesophilic and humid grasslands under various scenarios of climate change. The species ...
Methodology for identification of pollution sources using PMF for strategic decision making in air protection - update 2023
Horník, Štěpán; Sýkora, Jan; Pokorná, Petra
2023 - Czech
The presented methodology proposes utilizatíon of the spectroscopy of nuclear magnetic resonance (NMR) as another analytical technique for the identification of compounds in atmospheric aerosols. This technique makes significantly increases the number of deterined substances and thus a number of possible markers, which can be subsequently used together with other methods to identify sources of air pollution using advanced statistical\nanalysis. Among the markers determined by NMR spectroscopy there are several organic and sulfonic acids or carbohydrates, wich are characteristic for relevant sources of air pollution. The updated methodology also shows the identification of a biogenic source that previous methodologies were not able to determine. Předkládaná metodika navrhuje využití spektroskopie nukleární magnetické rezonance (NMR) jako další analytické techniky pro identifikaci sloučenin v atmosférických aerosolech. Tato technika umožňuje výrazně zvýšit počet stanovovaných látek a tfm i případný počet markerů, které lze následně ve spojení s jinými metodami využít pro identifikaci zdrojů znečištění ovzduší pomocí pokročilé statistické analýzy. Mezi markery stanovované pomocí\nNMR spektroskopie náleží různé organické kyseliny, sulfonové kyseliny nebo sacharidy, které jsou charakteristické pro příslušné zdroje znečištění. Aktualizovaná metodika také představuje identifikaci biogenního zdroje, který předcházející metodiky nedokázaly stanovit.
Keywords:
NMR spectroscopy; atmospheric aerosols; markers
Available on request at various institutes of the ASCR
Methodology for identification of pollution sources using PMF for strategic decision making in air protection - update 2023
The presented methodology proposes utilizatíon of the spectroscopy of nuclear magnetic resonance (NMR) as another analytical technique for the identification of compounds in atmospheric aerosols. This ...
Proceedings of 24th School of Mass Spectrometry
Cvačka, Josef; Vlk, Mikuláš; Vrkoslav, Vladimír; Hubálek, Martin
2023 - Czech
Keywords:
mass spectrometry; LC-MS; GC-MS
Available at various institutes of the ASCR
Proceedings of 24th School of Mass Spectrometry
Biopharmaceuticals from the MS point of view
Hubálek, Martin; Lenčo, J.
2023 - Czech
The course aims to introduce biotherapeutics, which are becoming an increasingly important part of the pharmacotherapy of serious diseases. Mass spectrometry plays an important role for their quality control in the pharmaceutical industry. We will introduce the audience to biopharmaceuticals, which in this context are peptides, proteins, monoclonal antibodies or oligonucleotides. From the analyst's point of view, we will focus mainly on antibody drugs, looking at the possibilities of their separation and analysis by mass spectrometry, at the level of intact protein molecules, antibody subunits or peptides. Kurz má za cíl představit bioléčiva, která se stávají stále významnější součástí farmakoterapie závažných onemocnění. Pro kontrolu jejich kvality ve farmaceutickém průmyslu hraje důležitou roli hmotnostní spektrometrie. Uvedeme posluchače do problematiky bioléčiv, kterými jsou v tomto pohledu peptidy, proteiny, monoklonální protilátky nebo oligonukleotidy. Z pohledu analytika se zaměříme především na protilátková léčiva, podíváme se na možnosti jejich separace a analýzy pomocí hmotnostní spektrometrie, a to na úrovni intaktních proteinových molekul, protilátkových podjednotek nebo peptidů.
Keywords:
mass spectrometry; biopharmaceuticals; LC-MS
Available on request at various institutes of the ASCR
Biopharmaceuticals from the MS point of view
The course aims to introduce biotherapeutics, which are becoming an increasingly important part of the pharmacotherapy of serious diseases. Mass spectrometry plays an important role for their quality ...
24th School of Mass Spectrometry. Course D - LC-MS Troubleshooting
Cvačka, Josef; Vlk, Mikuláš; Vrkoslav, Vladimír; Hubálek, Martin
2023 - Czech
Keywords:
mass spectrometry; liquid chromatography; troubleshooting
Available on request at various institutes of the ASCR
24th School of Mass Spectrometry. Course D - LC-MS Troubleshooting
Inorganic suspensions based on „power plant by-products ” suitable for their processing by 3D printing
Černý, Zbyněk; Plocek, Jiří; Rosypal, Pavlína
2023 - Czech
Inorganic aqueous extremely cheap suspensions based on „power plant by-products ” such as fly ash and slag suitable for their processing by 3D printing. Anorganické vodné extrémě laciné suspenze na bázi „vedlejších elektrárenských produktů ” jako jsou polétavé popílky a strusky vhodných pro jejich zpracování 3D tiskem.
Keywords:
power plant by-products; suspension 3D printig
Available at various institutes of the ASCR
Inorganic suspensions based on „power plant by-products ” suitable for their processing by 3D printing
Inorganic aqueous extremely cheap suspensions based on „power plant by-products ” such as fly ash and slag suitable for their processing by 3D printing.
Report of the ichthyological survey of the Bagr reservoir in 2023
Blabolil, Petr; Dvořáková, M.
2023 - Czech
The report summarizes the results of a survey of fish in the Bagr reservoir using benthic gillnets and seine. The aim of the survey was to describe the spatial distribution of fish populations in the nearshore and bottom habitats of the reservoir during the day and night. Zpráva shrnuje výsledky průzkumu ryb v Bagru za použití bentických tenatových a zátahových sítí. Cílem průzkumu bylo popsat prostorovou distribuci populací ryb v příbřežních a dnových habitatech nádrže ve dne a v noci.
Keywords:
fish; community; diversity
Available at various institutes of the ASCR
Report of the ichthyological survey of the Bagr reservoir in 2023
The report summarizes the results of a survey of fish in the Bagr reservoir using benthic gillnets and seine. The aim of the survey was to describe the spatial distribution of fish populations in the ...
Hydrobiological report on the Vrchlice reservoir focusing on fish and phytoplankton
Čech, Martin; Vejřík, Lukáš; Rychtecký, Pavel; Jezberová, Jitka; Kozlíková, Eliška; Znachor, Petr
2023 - Czech
The report summarizes two first years of the research of Vrchlice Reservoir in a trophic level of fish and phytoplankton Zpráva sumarizuje první dva roky výzkumu nádrže Vrchlice v trofické úrovni ryb a fytoplanktonu.
Keywords:
diversity; fish; phytoplankton; biomass; abundance; long-lines; electrofishing; gillnets
Available at various institutes of the ASCR
Hydrobiological report on the Vrchlice reservoir focusing on fish and phytoplankton
The report summarizes two first years of the research of Vrchlice Reservoir in a trophic level of fish and phytoplankton
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