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Hodnocení vhodnosti lokality pro umístění hlubinného úložiště VJP a RAO z hlediska dlouhodobé bezpečnosti - lokalita Čihadlo.
Havlová, V. ; Bukovská, Z. ; Dudíková Schulmannová, B. ; Dudková, A. ; Franěk, J. ; Holeček, J. ; Hroch, T. ; Jelének, T. ; Jelínek, J. ; Kachlíková, J. ; Kaláb, Zdeněk ; Klomínský, J. ; Kučera, R. ; Kunceová, E. ; Polák, M. ; Uhlík, J. ; Milický, M. ; Nývlt, D. ; Ondra, P. ; Pertoldová, J. ; Rapprich, V. ; Rukavičková, L. ; Šír, P. ; Štědrá, V. ; Švagera, O. ; Verner, K. ; Maryška, J. ; Říha, J. ; Královcová, J. ; Červinka, R. ; Gondolli, J. ; Klajmon, M. ; Kolomá, K. ; Černý, M. ; Vavro, Martin ; Vopálka, D. ; Svoboda, J. ; Vašíček, R. ; Hokr, M. ; Steinová, J. ; Zeman, J. ; Kouřil, M.
Tato zpráva shrnuje dostupná data z lokality Čihadlo a hodnotit lokalitu podle kritérií odvozených pracovníky SÚRAO z požadavků SÚJB (nová vyhláška o umísťování jaderných zařízení) a MAAE (NS-R-3 rev.1 Site Evaluation for Nuclear Installations Safety Requirements, 2016, SSG-14 Geological Disposal Facilities for Radioactive Waste, 2011) na vlastnosti lokality, které mají vliv na dlouhodobou bezpečnost HÚ (Vokál et al., 2015). Lokality jsou hodnoceny podle následujících kategorií kritérií:\n1) Popsatelnost a predikovatelnost geologických vlastností lokalit\n2) Hydrogeologické vlastnosti lokalit\n3) Stabilita lokalit (seismická, klimatická, vertikální pohyby, postvulkanické jevy)\n4) Pravděpodobnost intruze (neúmyslného vzniku člověka do úložiště)\n5) Slučitelnost vlastnosti horninového masivu s inženýrskými bariérami\n6) Transportní vlastnosti lokalit
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Drivers of soil moisture trends in the Czech Republic between 1961 and 2012
Trnka, M. ; Brázdil, R. ; Balek, J. ; Semerádová, D. ; Hlavinka, P. ; Možný, M. ; Štěpánek, P. ; Dobrovolný, P. ; Zahradníček, P. ; Dubrovský, Martin ; Eitzinger, J. ; Fuchs, B. ; Svoboda, M. ; Hayes, M. ; Žalud, Z.
Soil moisture dynamics and their temporal trends in the Czech Republic are forced by various drivers. Our analysis of temporal trends indicates that shifts in drought severity between 1961 and 2012 and especially in the April, May, and June period, which displayed such results as a 50% increase in drought probability during 1961–1980 in comparison to 2001–2012. We found that increased global radiation and air temperature together with decreased relative humidity (all statistically significant at p < 0.05) led to increases in the reference evapotranspiration in all months of the growing season; this trend was particularly evident in April, May, and August, when more than 80% of the territory displayed an increased demand for soil water. These changes, in combination with the earlier end of snow cover and the earlier start of the growing season (up to 20 days in some regions), led to increased actual evapotranspiration at the start of the growing season that tended to deplete the soil moisture earlier, leaving the soil more exposed to the impacts of rainfall variability. These results support concerns related to the potentially increased severity of drought events in Central Europe. The reported trend patterns are of particular importance with respect to expected climate change, given the robustness and consistency of the trends shown and the fact that they can be aligned with the existing climate model projections. Introduction
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Polymeric nanofibrous scaffolds reinforced with diamond and ceramic nanoparticles for bone tissue engineering
Bačáková, Lucie ; Pařízek, Martin ; Staňková, Ľubica ; Novotná, Katarína ; Douglas, T.E.L. ; Brady, M. A. ; Kromka, Alexander ; Potocký, Štěpán ; Stránská, D.
Three types of nanofibrous scaffolds were prepared by electrospining: (1) poly(lactide-co-glycoside) (PLGA) scaffolds reinforced with 23 wt.% of diamond nanoparticles (DNPs), (2) poly(L-lactide) (PLLA) scaffolds with DNPs in concentration ranging from from 0.4 wt.% to 12.3 wt.%, and (3) PLLA scaffolds with 5 wt.% or 15 wt.% of hydroxyapatite (HAp) nanoparticles. The diameter of the nanofibers ranged between 160 and 729 nm. The nanofibers with nanoparticles were thicker and the void spaces among them were smaller. Mechanical properties of the nanoparticle-loaded scaffolds were better, as demonstrated by a rupture test in scaffolds with DNPs and by a creep behavior test in scaffolds with HAp. On PLGA scaffolds with DNPs, the human osteoblast-like MG-63 cells adhered in similar numbers and grew with similar kinetics as on pure PLGA scaffolds. Human bone marrow mesenchymal stem cells grew faster and reached higher population densities on PLGA-DNP scaffolds. However, on PLLA-based scaffolds, the activity of mitochondrial enzymes and concentration of osteocalcin in MG-63 cells decreased with increasing DNP concentration. On the other hand, the metabolic activity of MG-63 cells and content of osteocalcin in these cells were positively correlated with the HAp concentration in PLLA scaffolds. Thus, PLGA nanofibers with 23 wt% of DNPs and PLLA nanofibers with 5 and particularly 15 wt.% of HAp seem to be promising for bone tissue engineering.
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Valley incision in the Nízké Tatry Mts. (Slovakia) estimated based on paleomagnetic and radiometric cave sediment datings
Kadlec, Jaroslav ; Bella, P. ; Čížková, Kristýna ; Granger, D. E. ; Hercman, H. ; Holúbek, P. ; Chadima, Martin ; Orvošová, M. ; Pruner, Petr ; Schnabl, Petr ; Šlechta, Stanislav
Up to eleven horizontal cave levels occur at different altitudes in Jánska, Demänovská and Mošnická karst valleys in the Nízke Tatry Mts. Most of the caves are filled with allochthonous sediments transported from the area formed mostly by granite. The cave levels were filled with fluvial sediments in dependence on the valleys incision caused by Neogene and Pleistocene uplift of the mountain range. The fluvial sediments are intercalated with, or capped, by flowstone layers in the caves. The paleomagnetic polarities measured both in clastic and chemogenic sediments indicate the age of deposition. Based on obtained polarity data we are able to distinguish cave sediments deposited during the Brunhes, Matuyama and Gauss chrons. The paleomagnetic interpretation was partly verified by U-series datings of flowstones preserved in the sedimentary sections. Except for the horizontal cave levels located in the karst valleys, additional large cave systems were found at extremely high altitudes in the Nízke Tatry Mts. 600–700 m above the lowest horizontal cave level.
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Evaluation of the possible role of cytokinin O-glucosylation in response of tobacco plants to drought stress
Nováková, Marie ; Dobrev, Petre ; Motyka, Václav ; Gaudinová, Alena ; Malbeck, Jiří ; Pospíšilová, Jana ; Martin, R. C. ; Mok, D. W. S. ; Mok, M. C. ; Vaňková, Radomíra
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Datování jeskynních sedimentů a rekonstrukce krasové morfologie Nízkých Tater
Kadlec, Jaroslav ; Danišík, M. ; Hercman, H. ; Pruner, Petr ; Chadima, Martin ; Schnabl, Petr ; Šlechta, Stanislav ; Grygar, Tomáš ; Granger, D.
Paleomagnetická polarita byla zjišťována u klastických a chemogenních jeskynních sedimentů v jedenácti horizontálních úrovních v rozdílných nadmořských výškách v Jánské, demänovské jeskyni a jeskyni mošica v Nízkých Tatrách. Zjištěná polarita odpovídá sedimentaci v jeskyních v průběhu epoch Brunhes, Matuyma a Gauss. Další jeskynní systém se vytvářel ve vyšších nadmořských výškách v Nízkých Tatrách. Předběžná data ukazují převážně inverzní paleomagnetickou polaritu, tudíž předpokládáme ukládání klastických sedimentů během Gilbertovy epochy.
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Závěrečná zpráva: Český vodohospodářský a ichtyologický revitalizační projekt
Peňáz, Milan ; Baruš, Vlastimil ; Halačka, Karel ; Halouzka, Jiří ; Horák, Václav ; Hubálek, Zdeněk ; Jurajda, Pavel ; Juřicová, Zina ; Lusk, Stanislav ; Lusková, Věra ; Prokeš, Miroslav ; Reichard, Martin ; Heteša, J. ; Hezina, V. ; Marvan, P. ; Hromádková, K. ; Vlašín, M. ; Veselý, D. ; Čižmárik, M. ; Hájková, N. ; Jelínková, I. ; Juříčková, M. ; Kadeřábková, J. ; Klemová, M. ; Pospíšil, O. ; Prudek, R.
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