Fluorimetric Determination of Scandium

V práci je podrobně studováno fluorimetrické stanovení skandia 8-Hydroxychinolin-5-sulfonovou kyselinou. Byly zhodnoceny všechny podstatné faktory na fluorescenci, např. vliv času, pH, koncentrace činidla, tlumičů, tenzidů a interference vybranými ionty na citlivost, mez detekce a přesnost stanovení při použití klasických fluorescenčních spekter i jejich první derivace. Metoda byla aplikována na stanovení skandia v reálných vodách. Nové činidlo bylo stručně porovnáno s dříve použitými činidly, morinem a lumogallionem pro stanovení skandia.The submitted thesis deals within the sensitive fluorimetric determination of scandium with a new reagent 8-Hydroxyquinoline-5-sulphonic acid. All important factors such as time, pH, reagent concentration, buffers, surfactants and selected interferents have been studied with respect to the selectivity, sensitivity, precision and detection limit on the determination by using classic fluorescence spectra and their first derivation. This reagent was also used for the determination of scandium in real waters. The new reagent was shortly compared to morin and lumogallion when used for scandium.

Vliv úpravy vnějších podnětů na vznik delirantních stavů u pacientů na jednotkách intenzivní péče

Příspěvek představuje plán na realizaci průzkumu v oblasti prevence delirantních stavů na jednotce intenzivní péče s využitím stimulačních podnětů. Je řešeno výzkumné zaměření, kritéria pro výběr pacientů a výběr vhodných pomůcek na aktivizaci během dne a zklidnění v noci. Výzkumné šetření bude probíhat na dvou boxech o třech lůžkách, kdy jeden pokoj bude se stimulačními podněty a druhý bude běžně vybaven. Jako nástroj pro hodnocení delirantních stavů byl zvolen test The Confusion Assessment Method for the Intensive Care Unit (CAM-ICU) v české verzi

Seasonal habitat use of three predatory fishes in a freshwater ecosystem

To understand the spatiotemporal overlap in the habitat use of sympatric predators, we studied longitudinal activity and reservoir section and depth use of pike (Esox lucius), pikeperch (Sander lucioerca) and catfsh (Silurus glanis) in the Římov Reservoir, using an autonomous telemetry system for 11 months. We found signifcant diferences among these species in studied parameters that varied considerably over tracked period. Pike consistently used the same sections of the reservoir, while pikeperch and catfsh frequently visited a tributary during the warm season (late spring and early autumn), and moved closer to the dam during the cold season (late autumn to early spring). Pike longitudinal activity was highest in the cold season, pikeperch in the warm season, and catfsh activity peaked in both seasons. Overlap in the depth use among species was higher in the warm season, when all species used the upper layer of the water column, and lower in the cold season, when pikeperch and catfsh used deeper areas. These results demonstrated overlay and temporal variation of habitat use among these predators, as well as potential spatiotemporal space for their direct ecological interactions. Acoustic telemetry · Predators · Habitat use · Movement ecology · Winter ecologypublishedVersio

Muzejní profese a veřejnost 2

Title in English: Museum professions and the public 2: Reflection of the educational phenomenon in contemporary museum practice. Among topical issues in present-day museology and museum practice is the dynamic relationship between science and education. The functionality of this interconnection in museum practice is projected into various forms of communication of research results achieved by professional museum workers to the general public. This mainly concerns the creation of well-understandable and visitor-attractive temporary and permanent exhibitions, specialised education programmes for schoolchildren or other groups, popularising thematic lectures and other accompanying programmes and cultural events, which at the same time observe the didactic rules of scientificity, presentiveness, interconnection of theory and practice etc. The publication offers a current insight into selected scientific disciplines involved in museum institutions and into the specifics of museum practice in the field of popularisation and mediation of their educational potential to the general public

Long-term monitoring of fish in a freshwater reservoir: Different ways of weighting complex spatial samples

Anthropogenic activities continue to pose the greatest challenges to freshwater ecosystems. Therefore, long-term monitoring is essential for the management and conservation of these resources. Monitoring programs for freshwater bodies often use a range of indicators, including biological elements such as fish. Existing European standard provides a depth-stratified gillnet sampling approach mainly in benthic habitats and at the deepest part of lakes to account for the uneven distribution of fish. However, the commonly used CEN (European Committee for Standardization) protocol does not weight sufficiently habitat volumes and underrepresent pelagic habitats to calculate whole-lake catch and biomass per unit effort (CPUE and BPUE, respectively). Extended European standard gillnet (4 larger mesh-sizes added in the geometric series) catch data collected over 18 years (2004–2021) in Římov Reservoir (Czech Republic) were used for a method comparison on indices for relative abundance and biomass of fish: CEN protocol without volume-weighting and two volume-weighted approaches. We also evaluated changes in species composition and trends in these fish population over time. Results indicated interannual changes in species composition, relative abundance, and biomass of fish community. The CEN protocol tended to put greater emphasis on benthic habitats which generally have larger CPUE and BPUE. Consequently, the two volume-weighting approaches produced lower estimates of the two parameters, with the exception of the most dominant pelagic bleak Alburnus alburnus (L.). All approaches consistently showed an increasing trend in whole-reservoir fish abundance and a decreasing trend in biomass over the study period. Following our assessment, we put forward the volume-weighting approach that considers the Volume of the depth Stratum (VOST) for weighting as the most realistic approximation of fish populations and therefore recommend its use

Taxation of sweetened beverages

The thesis deals with the taxation of sweetened beverages. The main objective of the thesis is to propose a tax on sweetened beverages in the Czech Republic. The theoretical part of the thesis, the first chapter is devoted to the characteristics of the concept of sweetened beverages and their specification in the Czech Republic, the functioning and design of this tax and the taxation of sweetened beverages in selected countries. The second chapter provides a review of empirical studies that analyse the impact of taxing sweetened beverages and following this, chapter three proposes a tax on sweetened beverages in the Czech Republic.Diplomová práce se zabývá zdaněním slazených nápojů. Hlavním cílem práce je navrhnout daň ze slazených nápojů v České republice. Teoretická část práce, první kapitola se věnuje charakteristice pojmu slazené nápoje a jejich specifikaci v České republice, fungováním a konstrukčním prvkům této daně a zdaněním slazených nápojů ve vybraných státech. V druhé kapitole je vytvořen přehled empirických studií, které analyzují dopad zdanění slazených nápojů a v návaznosti na to je v kapitole třetí navrhnuta daň ze slazených nápojů v České republice

The importance of dispather-assisted basic life support in the CPR

ANOTATION Zuzana Holubova The importance of dispather-assisted basic life support in the CPR Bachelor thesis deals with the importance of telephone-assisted CPR in the CPR. The theoretical part introduces the koncept of first aid, it is meaning and it is legislation. It focuses on cardiopulmonarz resuscitation in the light of the kontext of the formation and development of life-threatening conditions and introduces the koncept of telephone-assisted CPR and it is important role in providing basic life support. The focus is the empirical part, which is repared on the basis of quantitative research prepared by a questionnaire survey. The sample consists of 80 participants from non-medical public Hradec Kralove region, residing in the district of Nachod. The aim of the research is to map the importace of telephone-assisted CPR in the provision of basic life support

Preconcentration of Trace Analytes on Modified Sorbents and their Determination on Waters

The work has been focused on the preconcentration techniques for determination of 9Be, 51V, 59Co, 60Ni, 89Y, 111Cd, 208Pb, 232Th and 238U on the modified sorbents, all measurements were performed on ICP-MS. The instrument setup was optimized. The solution of internal standard (200 µg•l-1) was used during all measurements. The internal standard were chosen as follows: 6Li for 9Be, 45Sc (51V), 72Ge (59Co, 60Ni, 89Y), 103Rh (111Cd), 209Bi (206Pb, 207Pb, 208Pb, 232Th and 238U). Another parameters such as influence of mineral acids (HCl, HNO3), surfactant (Septonex®, Zephyramin, Ajatin, Brij 35 and Sodium dodecyl sulphate) and organic reagents (Ammonium pyrrolidinedithiocarbamate, 8-Hydroxyquinoline-5-sulphonic acid, 1,2-Dihydroxyanthraquinone-3-sulphonic acid and 4-(2-Pyridylazo)resorcinol) and the effect of some matrix components on intensity of instrument signal determination was investigated. For preconcentration polar Silicagel and modified nonpolar Silicagels (Silicagel-C18, C8 nad Phenyl) were used. Another experimantal part was dedicated to preconcentration on nonpolar Amberlite XAD-16 and Strata SDB-L and intermediately polar sorbent Amberlite XAD-7. Recoveries of sorption process were observed in the presence of all testing types of surfactants in certified concentration 5•10-4 mol•l-1. Surfactants were always applied in the conditioning step. The suitable combinations of surfactant and organic reagent were tested for increasing of recoveries of analytes. Testing organic reagents were added in five times mass excess againts concentration of analytes, the concentration of the organic reagents was 900 µg•l-1. The organic reagent was always added to the solution for preconcentration before this solution was led on the sorbent. The composition and a necessary volume of elution mixture for quantitative elution were tested, too. Only one sorbent was chosen from each group of sorbents with similar properties. The chosen sorbent showed the best recoveries in majority of target analytes. The highest recoveries from silica-group was reached for Silicagel-C18, from nonpolar Amberlite was chosen Strata SDB-L and intermediately polar Amberlite XAD-7. The influence of some matrix components (anionts and cations) on recoveries of analytes was investigated for chosen sorbent. The optimized process was applied on real samples of nature water and industry water. In experimental part all analytes are marked as specific izotopes, which were measured by ICP-MS. Of course, all izotopes of analytes undergo preconcentration techniques

The importance of dispather-assisted basic life support in the CPR

ANOTATION Zuzana Holubova The importance of dispather-assisted basic life support in the CPR Bachelor thesis deals with the importance of telephone-assisted CPR in the CPR. The theoretical part introduces the koncept of first aid, it is meaning and it is legislation. It focuses on cardiopulmonarz resuscitation in the light of the kontext of the formation and development of life-threatening conditions and introduces the koncept of telephone-assisted CPR and it is important role in providing basic life support. The focus is the empirical part, which is repared on the basis of quantitative research prepared by a questionnaire survey. The sample consists of 80 participants from non-medical public Hradec Kralove region, residing in the district of Nachod. The aim of the research is to map the importace of telephone-assisted CPR in the provision of basic life support