Přírodovědecká fakulta: Poslední příspěvky

Zobrazují se záznamy 61-80 z 109

    • Co o vztahu člověka a zvířete v minulosti prozrazují stabilní izotopy 

      Kovačiková, Lenka (Academia, 2016)
      Některé lehké stabilní izotopy (např. uhlíku, dusíku a kyslíku) obsažené v kostech a zubech zvířat nám ve spojení s archeozoologickými daty umožňují získat více informací o vztahu člověka a zvířat, klimatu nebo prostředí ...

    • Life cycles of chromerids resemble those of colpodellids and apicomplexan parasites 

      Oborník, Miroslav; Kručinská, Jitka; Esson, Heather (Schweizerbart Science Publishers, 2016)
      Chromerids are alveolate algae with secondary plastids surrounded by four membranes, and with evolutionary positions close to the root of apicomplexan parasites. As both described chromerid species, Chromera velia and ...

    • A Novel Bunyavirus-Like Virus of Trypanosomatid Protist Parasites 

      Akopyants, Natalia S.; Lye, Lon-Fye; Dobson, Deborah E.; Lukeš, Julius; Beverlye, Stephen M. (American Society for Microbiology, 2016)

    • The silent information regulator 1 (Sirt1) is a positive regulator of the Notch pathway in Drosophila 

      Horváth, Matej; Mihajlović, Zorana; Slaninová, Věra; Perez Gomez, Raquel; Moshkin, Yuri; Krejčí (Bruce), Alena (Portland Press Ltd., 2016)
      The silent information regulator 1 (Sirt1) has been shown to have negative effects on the Notch pathway in several contexts. We bring evidence that Sirt1 has a positive effect on Notch activation in Drosophila, in the ...

    • Sídliště z pozdní doby halštatské a časné doby laténské v Malých Číčovicích, okr. Praha-západ 

      Křepinská, Veronika; Kovačiková, Lenka (Ústav archeologické památkové péče středních Čech, 2016)
      Zpracování a vyhodnocení archeologických nálezů ze sídliště doby pozdně halštatské až časně laténské, které bylo zkoumáno záchranným archeologickým výzkumem v roce 2011 na ploše při jihozápadním okraji katastrálního území ...

    • Objekt nejstarších zemědělců z Nových Dvorů 3 podruhé. Výpověď zvířecích kostí a prostorové distribuce artefaktů 

      Končelová, Markéta; Kovačiková, Lenka (Univerzita Karlova, 2016)
      Zdánlivě obyčejný nález jednoho sídlištního objektu, navíc ještě ne zcela kompletního, učiněný během záchranného výzkumu, dokázal po analýze materiálu z jeho výplně přinést řadu užitečných poznatků. Svým chronologickým ...

    • Oil extraction imperils Africa's Great Lakes 

      Verheyen, Erik; Abila, R.; Akoll, P.; Albertson, C.; Antunes, D.; Banda, T.; Bills, R.; Bulirani, A.; Manda, A. Chocha; Cohen, A. S.; Cunha-Saraiva, F.; Derycke, S.; Donohue, I.; Du, M.; Dudu, A. M.; Egger, B.; Fritzsche, K.; Frommen, J. G.; Gante, H. F.; Genner, M. J.; Haerer, A.; Hata, H.; Irvine, K.; Mwapu, P. Isumbisho; de Bisthoven, L. Janssens; Jungwirth, A.; Kaleme, P.; Katongo, C.; Kever, L.; Koblmueller, S.; Konings, A.; Lamboj, A.; Lemmel-Schaedelin, F.; Schiaffino, G. Machado; Martens, K.; Mulungula, P. Masilya; Meyer, A.; More, H. L.; Musilova, Z.; Bukinga, F. Muterezi; Muzumani, R.; Ntakimazi, G.; Okello, W.; Phiri, H.; Piálek, Lubomír; Plisnier, P. D.; Raeymaekers, J. A. M.; Rajkov, J.; Říčan, Oldřich; Roberts, R.; Salzburger, W.; Schoen, I.; Sefc, K. M.; Singh, P.; Skelton, P.; Snoeks, J.; Schneider, K.; Sturmbauer, C.; Svardal, H.; Svensson, O.; Dowdall, J. Torres; Turner, G. F.; Tyers, A.; van Rijssel, J. C.; Van Steenberge, M.; Vanhove, M. P. M.; Verheyen, E.; Weber, A. -T.; Weyl, O.; Ziegelbecker, A.; Zimmermann, H. (American Association for the Advancement of Science, 2016)
      The article points out the intent of several African countries to extract oil in the East African Great Lakes region including all the consequences. The authors list the grave risks of a potential accident and problems ...

    • Annealing of indium tin oxide (ITO) coated optical fibers for optical and electrochemical sensing purposes 

      Dominik, M.; Swatowska, Barbara; Siuzdak, K.; Maziarz, Wojciech; Niedziałkowski, P.; Pisarkiewicz, Tadeusz; Straňák, Vítězslav; Kucewicz, Wojciech; Sezemský, Petr; Sobaszek, M.; Bogdanowicz, R.; Ossowski, T.; Śmietana, M. (Society of Photo-optical Instrumentation Engineers, 2016)
      Glass and fiber structures with Indium Tin Oxide (ITO) coating were subjected to annealing in order to identify impact of the thermal treatment on their optical and electrochemical properties. It is shown that the annealing ...

    • Antrakologická a makrozbytková analýza z lokality Turnov – Maškovy zahrady (výzkum 2012) 

      Novák, Jan (Ústav archeologické památkové péče středních Čech, 2016)
      Celkově bylo analyzováno 59 vzorků pocházejících z 30 objektů. Mezi analyzovanými objekty převažovaly kůlové jamky (objekt typu A, 23 objektů, 29 kontextů), dále zásobní jámy (objekt typu E, 5 objektů, 26 kontextů), ojediněle ...

    • Question of the integrity of the ondratice l/želeč surface collection 

      Mlejnek, Ondřej; Škrdla, Petr; Tostevin, Gilbert B.; Lisá, Lenka; Novák, Jan (Römisch-Germanischen Zentralmuseums, 2016)
      Excavations during 2010-2012 produced a new early Upper Palaeolithic site Želeč I in Central Moravia. Three settlement horizons were distinguished at this site. The oldest one, predating the cold HE 4, dated by 14C AMS to ...

    • From LBK to SBK: Pottery, Bones, Lithics and Houses at the Neolithic site of Hrdlovka, Czech Republic 

      Vondrovský, Václav; Beneš, Jaromír; Divišová, Michaela; Kovačiková, Lenka; Šída, Petr (De Gruyter Open Ltd., 2016)
      The paper is focused on the period of cultural change at the turn of 6th and 5th millennia BC, when the uniform Linear Pottery Culture (LBK) occupying an extensive area disintegrated in several local groups or cultures, ...

    • DESCRIPTION OF TWO NEW SPECIES OF Crenicichla (TELEOSTEI: CICHLIDAE) FROM THE LOWER IGUAZÚ RIVER WITH A TAXONOMIC REAPPRAISAL OF C. iguassuensis, C. tesay AND C. yaha 

      Piálek, Lubomír; Dragová, Klára; Casciotta, Jorge; Almirón, Adriana; Říčan, Oldřich (Ciudad Autónoma de Buenos Aires, 2015)
      Five species of Crenicichla have been recorded so far from the lower Iguazú River. Four of them are endemic (members of the C. mandelburgeri species complex from the C. lacustris group) and living in sympatry; the fifth ...

    • First records of Characidium heirmostigmata and C. serrano (Characiformes: Crenuchidae) from freshwaters of Argentina 

      Casciotta, Jorge; Almirón, Adriana; Doubnerová, Klára; Piálek, Lubomír; Říčan, Oldřich (2015)
      Characidium heirmostigmata and C. serrano are registered for the first time in freshwaters of Argentina in the province of Misiones. Characidium heirmostigmata was found in the middle río Paraná basin and C. serrano in ...

    • Non-random mating activity of colour morphs of ladybird Harmonia axyridis (Coleoptera: Coccinellidae) 

      Awad, Mona Abdel Rahman; Kalushkov, Plamen; Karabüyük, Feray; Nedvěd, Oldřich (Česká společnost zoologická, 2015)
      Ladybird beetles are highly sexually active as they mate often and for a long time. In some of the species that are polymorphic in terms of their elytral colouration there is a high proportion of melanic males in mating ...

    • Specimens of Thylacinus cynocephalus in collections of the Czech Republic (Mammalia: Thylacinidae) 

      Robovský, Jan; Sleightholme, S.; Vohralík, Vladimír; Benda, Petr (Národní muzeum v Praze, 2015)
      A list of the thylacine specimens housed in collections of the Czech Republic is given and all available data on the specimens are provided, including the photographs. One mounted skin is in the National Museum Prague and ...

    • Changes of coat cover in primitive horses living on a reserve 

      Stachurska, A.; Robovský, Jan; Bocian, K.; Janczarek, I. (American Society of Animal Science, 2015)
      Changes in the coat cover are important for mammalian thermoregulation. This is especially true where variable environmental conditions exist throughout the seasons. Coat cover shedding is the replacement of old coat hair ...

    • Guaranteed a posteriori error estimates for obstacle problem for elastic deformation of membrane 

      Harasim, P.; Szarkova, D.; Balko, L.; Valdman, Jan; Richtarikova, D. (Slovak University of Technology in Bratislava, 2015)
      We apply functional a posteriori error estimate proposed by S. Repin for numerical solution of obstacle problem for membrane. Numerical solution of the obstacle problem is obtained by the finite element method using bilinear ...

    • Verification of functional a posteriori error estimates for an obstacle problem 

      Simos, T.E.; Harasim, P.; Tsitouras, C.; Valdman, Jan (American Institute of Physics, 2015)
      We verify functional a posteriori error estimate proposed by S. Repin for an obstacle problem. A new benchmark with known analytical solution in 2D is constructed. Numerical approximation is obtained by the finite element ...

    • Unexpectedly Streamlined Mitochondrial Genome of the Euglenozoan Euglena gracilis 

      Dobáková, Eva; Flegontov, Pavel; Skalický, Tomáš; Lukeš, Julius (Oxford University Press, 2015)
      In this study, we describe the mitochondrial genome of the excavate flagellate Euglena gracilis. Its gene complement is reduced as compared with the well-studied sister groups Diplonemea and Kinetoplastea.We have identified ...

    • Authentication and Authorization Applications in 4G Networks 

      null, null; Dostálek, Libor (Univerzita obrany, 2015)
      This contribution to discuss the possibility of strong authentication for applications running on mobile devices. It deals with the possibility of combining algorithm AKA with other authentication algorithms. Combination ...