59 research outputs found

    (R)-2-{2-[(S)-(2′-Benzo­yloxy-1,1′-binaphthyl-2-yl)oxycarbonyl­amino]-3-phenylpropanamido­meth­yl}pyridinium picrate acetone solvate

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    In the crystal structure of the title compound, C43H34N3O5 +·C6H2N3O7 −·C3H6O, the large dimension and shape of the cation are responsible for the elongation of the ortho­rhom­bic unit cell. The ions and acetone mol­ecules are linked together by a system of hydrogen bonds involving an inter­molecular hydrogen bond between one N atom of the cation and the O atom of acetone and two inter­molecular hydrogen bonds between the cation N atoms and the O atoms of the picrate anion. No intra­molecular hydrogen bonds exist in the structure. The dihedral angle between the two naphthalene ring systems is 76.16 (13)°. The chiral C atom has a known R configuration, but this cannot be confirmed from this X-ray analysis

    Geodynamics development of the Losenice valley, Šumava Mts.

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    Topic and aims of the thesis Presented PhD thesis summarizes broadly conceived research of the relief development in the valley of the Losenice, a minor stream descending the steep outer slopes of the Šumava(Bohemian Forest) Mts. The thesis presents an overyiew of the knowledge' gathered throughout ,"u..uí years ofintensive research in the target area, as well as in řts surroundings in the Šumavaand Pošumavíregions. The conception of the thesis is based on a set of reviewed scientific publications, *hi"h were published during the almost six years and which were supported bý several consequent research grants and projects' systemátically almed at th9 research of geodynamics and curient processes in selected parts of the Sumava Mts' The chief aim of the work was to establish a valid hypothesis on the development of the outer s1ope of the ŠumavaMts., particularly in the catchment of the Losenice River' To fulfil this aim' following partial goals were set: ' - t; perform a complete, systematic uld ^ detailed geomorphological mapping of tire target area, analyse the forrns and i.o""'."' wiň particular aim at current and recent dynamics Based on ihe character, intensity and spatial relationships between the processes formulate hypotheses on the development of the area' - to design, build and run a monitoring...Témaa cílepráce Předkládaná doktorská disertačnípráce shrnuje široce pojaý výzkum vývoje reliéfu v povodí Losenice, kterése nachází na okrajovém svahu Šumavy. Tato práceje uceleným souborem poznatků, které se autorovi podařilo shromáždit v průběhu něko|ik let trvajícího soustavného v'ýzkumu v povodí Losenice, ovšem některé metody byly aplikovány i v širšímokolí zájmového území'tedy v přileh|ých částech Šumalya Pošumaví. Práce je koncipována jako soubor recenzovaných vědeckých publikací' které vznik|y v průběhu téměř šesti let za podpory několika výzkumných projektů,přičemžnejvětšíčást obsahu této práce vznikla v rámci tří po sobě následujícíchprojektů, kterébyly systematicky zaměřeny na geodynamiku vybraných částíŠumalrya Pošumaví. Hlavním cílem této práce je objasnit vývoj okrajového svahu pohoří Šumava,zejménav oblasti povodí Losenice. K tomu byly stanoveny nás|edující dílčící|e: - provést uce|ené' systematické a podrobné geomorfologické mapování v záj movém uzemí, analyzov at jednotlivé tvary a procesy' kteréjeutvářely, s důrazem na současnéa recentní. Na zák|adě jejich intenzity, charakteru a prostoroqich vztahů odvodit podklady pro formulaci hypotéz o ryvoji zájmového území. - navrhnout' vybudovat a provozovat monitorovací síť ke sledování současnýchpomalých svahových pohybů a vyhodnocení naměřených...Department of Physical Geography and GeoecologyKatedra fyzické geografie a geoekologieFaculty of SciencePřírodovědecká fakult

    Geodynamics development of the Losenice valley, Šumava Mts.

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    Topic and aims of the thesis Presented PhD thesis summarizes broadly conceived research of the relief development in the valley of the Losenice, a minor stream descending the steep outer slopes of the Šumava(Bohemian Forest) Mts. The thesis presents an overyiew of the knowledge' gathered throughout ,"u..uí years ofintensive research in the target area, as well as in řts surroundings in the Šumavaand Pošumavíregions. The conception of the thesis is based on a set of reviewed scientific publications, *hi"h were published during the almost six years and which were supported bý several consequent research grants and projects' systemátically almed at th9 research of geodynamics and curient processes in selected parts of the Sumava Mts' The chief aim of the work was to establish a valid hypothesis on the development of the outer s1ope of the ŠumavaMts., particularly in the catchment of the Losenice River' To fulfil this aim' following partial goals were set: ' - t; perform a complete, systematic uld ^ detailed geomorphological mapping of tire target area, analyse the forrns and i.o""'."' wiň particular aim at current and recent dynamics Based on ihe character, intensity and spatial relationships between the processes formulate hypotheses on the development of the area' - to design, build and run a monitoring..

    The first record of the black bullhead (Ameiurus melas) in the Třeboň district, Czech Republic

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    In the Czech Republic, the occurrence of the Black bullhead, Ameiurus melas (Rafinesque, 1820) was recorded for the first time. The species occurs in some of the fishponds in the environs of Lomnice nad Lužnicí, southern Bohemia. The species was introduced unintentionally as an admixture to carp stocking material from Croatia in 2003. In the autumn of 2005, the occurrence was observed of adults as well as yearling fry, indicating that natural reproduction had taken place in some of the ponds. The water from the fishpond system is released into the Lužnice River so that there is a possibility of the species spreading over natural habitats of the river mentioned. The occurrence of this species in the fishponds in southern Bohemia tends to confirm the fact that transports of stocking fish, above all, carp but other species as well, present a real risk of unintentional introductions of non-native species and an important way of their subsequent dispersal

    The ichthyofauna and migration permeability of the River Otava

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    The River Otava (a tributary of the River Vltava, Elbe drainage area) belonged in the past to the known rivers where Salmo salar were immigrating to spawn. On the Otava stream, in total 33 transverse steps of various types were built, which constitute mostly insurmountable barriers to fish migration

    Vybrané metody sledování současných geomorfologických procesů

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    The current geomorphological processes actively change the shape of the relief. In this article, the most active processes in the environment of central European midmountains are described on the example of the Šumava Mts. The factors, influencing the activity of the current processes are described, as well as the means of their influence. Major part concerns and describes selected methods, used for the research of the current processes, particularly various possibilites and techniques of mapping, sediment analyses and monitoring

    Methodics of delineation of the floodplain in GIS

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    The article deals with a proposal of an automatic delineation of the floodplain, its, developement, evaluation and verifcation
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