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Zeitschriftenartikel zum Thema „Stubai“

Autor: Grafiati
Veröffentlicht am 24. Juni 2021
Zuletzt aktualisiert am 5. Februar 2022

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1

Schulz, Bernhard, Joachim Krause und Robert Zimmermann. „Electron microprobe petrochronology of monazite-bearing garnet micaschists in the Oetztal-Stubai Complex (Alpeiner Valley, Stubai)“. Swiss Journal of Geosciences 112, Nr. 2-3 (08.11.2019): 597–617. http://dx.doi.org/10.1007/s00015-019-00351-4.

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2

Mogessie, A., F. Purtscheller und R. Tessadri. „Chromite and chrome spinel occurrences from metacarbonates of the Oetztal–Stubai Complex (Northern Tyrol, Austria)“. Mineralogical Magazine 52, Nr. 365 (April 1988): 229–36. http://dx.doi.org/10.1180/minmag.1988.052.365.09.

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AbstractChromite inclusions in uvarovite-chrome garnet, chemically zoned chromite-chrome spinel and chrome spinel-olivine pairs from metacarbonates of the Oetztal-Stubai Complex (northern Tyrol, Austria) are described in terms of their textural occurrences and chemical compositions. Their genetic relationship in relation to the polymetamorphism of the region is discussed.
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3

Vavtar, F. „Das Zinn-Kupfer-Erzvorkommen am Gl�cksgrat (Stubai-Kristallin)“. TMPM Tschermaks Mineralogische und Petrographische Mitteilungen 35, Nr. 4 (Dezember 1986): 287–98. http://dx.doi.org/10.1007/bf01191992.

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4

Purtscheller, F., und R. Tessadri. „Zirconolite and baddeleyite from metacarbonates of the Oetzstal–Stubai Complex (northern Tyrol, Austria)“. Mineralogical Magazine 49, Nr. 353 (September 1985): 523–29. http://dx.doi.org/10.1180/minmag.1985.049.353.05.

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AbstractZirconolite and baddeleyite from polymetamorphosed metacarbonates of the Oetztal-Stubai complex (northern Tyrol, Austria) are described in terms of their paragenetic relationship and chemical compositions. For the first time an analysis of a chemically zoned niobian zirconolite (high Nb and low Ti in core, low Nb and high Ti at rim) is presented. Genetic possibilities for the origin of the metacarbonates are discussed in the light of zirconolite- and baddeleyite-formation.
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5

Mogessie, Aberra, Fridolin Purtscheller und Richard Tessadri. „Geochemistry of amphibolites from the Ötztal—Stubai Complex (northern Tyrol, Austria)“. Chemical Geology 51, Nr. 1-2 (Oktober 1985): 103–13. http://dx.doi.org/10.1016/0009-2541(85)90090-7.

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6

Krois, Peter, Volkmar Stingl und Fridolin Purtscheller. „Metamorphosed weathering horizon from the Oetztal-Stubai crystalline complex (Eastern Alps, Austria)“. Geology 18, Nr. 11 (1990): 1095. http://dx.doi.org/10.1130/0091-7613(1990)018<1095:mwhfto>2.3.co;2.

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7

Krainer, Karl, und Wolfram Mostler. „Reichenkar rock glacier: a glacier derived debris-ice system in the western Stubai Alps, Austria“. Permafrost and Periglacial Processes 11, Nr. 3 (2000): 267–75. http://dx.doi.org/10.1002/1099-1530(200007/09)11:3<267::aid-ppp350>3.0.co;2-e.

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8

Hammerle, A., A. Haslwanter, U. Tappeiner, A. Cernusca und G. Wohlfahrt. „Leaf area controls on energy partitioning of a temperate mountain grassland“. Biogeosciences 5, Nr. 2 (20.03.2008): 421–31. http://dx.doi.org/10.5194/bg-5-421-2008.

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Abstract. Using a six year data set of eddy covariance flux measurements of sensible and latent heat, soil heat flux, net radiation, above-ground phytomass and meteorological driving forces energy partitioning was investigated at a temperate mountain grassland managed as a hay meadow in the Stubai Valley (Austria). The main findings of the study were: (i) Energy partitioning was dominated by latent heat, followed by sensible heat and the soil heat flux; (ii) When compared to standard environmental forcings, the amount of green plant matter, which due to three cuts varied considerably during the vegetation period, explained similar, and partially larger, fractions of the variability in energy partitioning; (iii) There were little, if any, indications of water stress effects on energy partitioning, despite reductions in soil water availability in combination with high evaporative demand, e.g. during the summer drought of 2003.
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9

Hammerle, A., A. Haslwanter, U. Tappeiner, A. Cernusca und G. Wohlfahrt. „Leaf area controls on energy partitioning of a mountain grassland“. Biogeosciences Discussions 4, Nr. 5 (11.10.2007): 3607–38. http://dx.doi.org/10.5194/bgd-4-3607-2007.

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Abstract. Using a six year data set of eddy covariance flux measurements of sensible and latent heat, soil heat flux, net radiation, above-ground phytomass and meteorological driving forces energy partitioning was investigated at a temperate mountain grassland managed as a hay meadow in the Stubai Valley (Austria). The main findings of the study were: i) Energy partitioning was dominated by latent heat, followed by sensible heat and the soil heat flux; ii) When compared to standard environmental forcings, the amount of green plant matter, which due to three cuts varied considerably during the vegetation period, explained similar, and partially larger, fractions of the variability in energy partitioning; ii) There were little, if any, indications of water stress effects on energy partitioning, despite reductions in soil water availability in combination with high evaporative demand, e.g. during the summer drought of 2003.
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10

Denoth, A., und A. Foglar. „Measurements of Daily Variations in the Subsurface Wetness Gradient“. Annals of Glaciology 6 (1985): 254–55. http://dx.doi.org/10.1017/s026030550001051x.

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A flat condenser in strip-line technique has been developed to measure the gradient in liquid water content near the snow surface. This dielectric sensor is connected to a twin-T-bridge with an operating frequency of 27 MHz. The special design of the sensor allows the non-destructive measurement of the mean dielectric constant of underlying material at two different depths of 0 to 2 cm, and of 2 to 4 cm below the snow surface. Based on the model of Polder and van Santen, changes in the gradient of liquid water content can be calculated from measured changes in the dielectric constant in different depths; the density has to be measured separately. Results of measurements of wetness gradient with this flat capacitative sensor are given. Field measurements have been carried out in the Stubai Alps (3100 m a.s.1.) and at the Hafelekar (2256 m a.s.l.) near Innsbruck.
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11

Mair, Rudolf, und Michael Kuhn. „Temperature and movement measurements at a bergschrund“. Journal of Glaciology 40, Nr. 136 (1994): 561–65. http://dx.doi.org/10.1017/s0022143000012442.

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AbstractThe highest, nearly stationary crevasse that occurs on most alpine glaciers is commonly called a bergschrund. It has often been believed to form when the main ice body below slides downward and thus separates from the thin, steep ice above, which is supposed to remain frozen to its bed. In order to verify or refute this assumption, temperatures and ice motion were recorded at several points in and around a bergschrund on Daunferner, a glacier in the Stubai Alps in Tyrol, Austria. Both measurements and observations indicated that the ice above the bergschrund was sliding as well and that the crevasse formed at a place where ice thickness, deformation and sliding velocity were markedly increasing.At the same time a randkluft, i.e. a deep crevasse between the headwall and the glacier, was observed to open, clearly the result of ice flow and not due to melting as previously believed.
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12

Mair, Rudolf, und Michael Kuhn. „Temperature and movement measurements at a bergschrund“. Journal of Glaciology 40, Nr. 136 (1994): 561–65. http://dx.doi.org/10.3189/s0022143000012442.

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AbstractThe highest, nearly stationary crevasse that occurs on most alpine glaciers is commonly called a bergschrund. It has often been believed to form when the main ice body below slides downward and thus separates from the thin, steep ice above, which is supposed to remain frozen to its bed. In order to verify or refute this assumption, temperatures and ice motion were recorded at several points in and around a bergschrund on Daunferner, a glacier in the Stubai Alps in Tyrol, Austria. Both measurements and observations indicated that the ice above the bergschrund was sliding as well and that the crevasse formed at a place where ice thickness, deformation and sliding velocity were markedly increasing.At the same time a randkluft, i.e. a deep crevasse between the headwall and the glacier, was observed to open, clearly the result of ice flow and not due to melting as previously believed.
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13

Denoth, A., und A. Foglar. „Measurements of Daily Variations in the Subsurface Wetness Gradient“. Annals of Glaciology 6 (1985): 254–55. http://dx.doi.org/10.3189/s026030550001051x.

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A flat condenser in strip-line technique has been developed to measure the gradient in liquid water content near the snow surface. This dielectric sensor is connected to a twin-T-bridge with an operating frequency of 27 MHz. The special design of the sensor allows the non-destructive measurement of the mean dielectric constant of underlying material at two different depths of 0 to 2 cm, and of 2 to 4 cm below the snow surface. Based on the model of Polder and van Santen, changes in the gradient of liquid water content can be calculated from measured changes in the dielectric constant in different depths; the density has to be measured separately. Results of measurements of wetness gradient with this flat capacitative sensor are given. Field measurements have been carried out in the Stubai Alps (3100 m a.s.1.) and at the Hafelekar (2256 m a.s.l.) near Innsbruck.
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14

KONZETT, J. „Metamorphic Evolution of Iron-rich Mafic Cumulates from the Otztal-Stubai Crystalline Complex, Eastern Alps, Austria“. Journal of Petrology 46, Nr. 4 (10.12.2004): 717–47. http://dx.doi.org/10.1093/petrology/egh095.

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15

Hausmann, H., K. Krainer, E. Brückl und W. Mostler. „Internal structure and ice content of Reichenkar rock glacier (Stubai Alps, Austria) assessed by geophysical investigations“. Permafrost and Periglacial Processes 18, Nr. 4 (2007): 351–67. http://dx.doi.org/10.1002/ppp.601.

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16

Achammer, TH, und A. Denoth. „Snow dielectric properties: from DC to microwave X-band“. Annals of Glaciology 19 (1994): 92–96. http://dx.doi.org/10.1017/s0260305500011034.

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Broadband measurements of dielectric properties of natural snow samples near or at 0°C are reported. Measurement quantities are: dielectric permittivity, loss factor and complex propagation factor for electromagnetic waves. X-band measurements were made in a cold room in the laboratory; measurements at low and intermediate frequencies were carried out both in the field (Stubai Alps, 3300 m; Hafelekar near Innsbruck, 2100 m) and in the cold room. Results show that in the different frequency ranges the relative effect on snow dielectric properties of the parameters: density, grain-size and shape, liquid water content, shape and distribution of liquid inclusions and content of impurities, varies significantly. In the low-frequency range the influence of grain-size and shape and snow density dominates; in the medium-frequency range liquid water content and density are the dominant parameters. In the microwave X-band the influence of the amount, shape and distribution of liquid inclusions and snow density is more important than that of the remaining parameters.
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17

Achammer, TH, und A. Denoth. „Snow dielectric properties: from DC to microwave X-band“. Annals of Glaciology 19 (1994): 92–96. http://dx.doi.org/10.3189/s0260305500011034.

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Broadband measurements of dielectric properties of natural snow samples near or at 0°C are reported. Measurement quantities are: dielectric permittivity, loss factor and complex propagation factor for electromagnetic waves. X-band measurements were made in a cold room in the laboratory; measurements at low and intermediate frequencies were carried out both in the field (Stubai Alps, 3300 m; Hafelekar near Innsbruck, 2100 m) and in the cold room. Results show that in the different frequency ranges the relative effect on snow dielectric properties of the parameters: density, grain-size and shape, liquid water content, shape and distribution of liquid inclusions and content of impurities, varies significantly. In the low-frequency range the influence of grain-size and shape and snow density dominates; in the medium-frequency range liquid water content and density are the dominant parameters. In the microwave X-band the influence of the amount, shape and distribution of liquid inclusions and snow density is more important than that of the remaining parameters.
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18

Stingl, Volkmar, und Peter Krois. „Sedimentological investigations of metamorphic clastics: the basal clastic rocks of the Brenner Mesozoic (Stubai Alps, Austria/Italy)“. Terra Nova 2, Nr. 3 (Mai 1990): 273–81. http://dx.doi.org/10.1111/j.1365-3121.1990.tb00075.x.

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19

Moran, Andrew P., Susan Ivy Ochs, Marcus Christl und Hanns Kerschner. „Exposure dating of a pronounced glacier advance at the onset of the late-Holocene in the central Tyrolean Alps“. Holocene 27, Nr. 9 (16.02.2017): 1350–58. http://dx.doi.org/10.1177/0959683617690589.

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A two-phased moraine system in the high Alpine valley of Lisenser Längental in the Stubai Alps of western Austria is located in an intermediate morphostratigraphic position constrained by ‘Egesen Stadial’ (Younger Dryas) moraines down valley and ‘Little Ice Age’ (‘LIA’) positions (modern times) up valley. The equilibrium line altitude (ELA) was about 50 m lower than during the ‘LIA’ when applying an accumulation area ratio of 0.67. Exposure dating of boulders with 10Be yields a mean age of 3750 ± 330 years for the more extensive outer moraine system and a single age of 3140 ± 280 years for the inner one. The ages correspond well to the ‘Loebben oscillation’, a sequence of multi-decadal to multi-centennial cooling phases at the onset of the late-Holocene, also recognized in other Alpine records. The climatic downturn was severe enough to cause small to medium-sized Alpine glaciers in the central Alps to advance significantly beyond their ‘LIA’ extent, but too short to trigger a similar reaction with large glaciers.
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20

Melcher, Frank, und Peter Krois. „Syngenetic and diagenetic formation of ore deposits in the metamorphosed sediments of the basal Brenner Mesozoic (Stubai Valley, Austria)“. Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 1992, Nr. 4 (17.06.1992): 207–20. http://dx.doi.org/10.1127/njgpm/1992/1992/207.

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21

Angerer, Thomas, Frank Melcher, Peter Onuk, Peter Tropper, Albin Volgger und Patrick Gasteiger. „High-Tech-Metalle in ostalpinen Buntmetallsulfidvorkommen: geologische Faktoren ihrer Anreicherung, Verteilung und Mobilisation (drei MRI-Projekte 2015–2019)“. BHM Berg- und Hüttenmännische Monatshefte 166, Nr. 4 (18.03.2021): 181–92. http://dx.doi.org/10.1007/s00501-021-01103-4.

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ZusammenfassungDie Ergebnisse dreier MRI Projekte 2015–2019 (Leoben und Innsbruck) werden hier zusammenfassend dargestellt. Der Fokus liegt auf den Ergebnissen des Innsbrucker Projekts, in dem sedimentär-exhalative Erze des Ötztal-Stubai-Kristallins (ÖSK) als beispielhaftes Mineralsystem erforscht wurden, um den komplexen Einfluss geologischer Prozesse auf die Anreicherung bzw. mineralogische Verteilung von Spurenelementen zu verdeutlichen.Die umfangreichen Datensätze aus vielen ostalpinen Bergbaurevieren erlauben Aussagen über die Präferenz von Spurenelementen in verschiedenen Typen von Fe-Cu-Zn-Sulfidparagenesen. Die Elemente Mn, Ga, Se und Cd werden präferentiell in Sphalerit eingebaut; Co, Ni in Pyrit und Pyrrhotin; As in Pyrit; Ag und Sn im Chalkopyrit. In karbonatgebundenen Pb-Zn Erzen wird Ge in Sphalerit und in Cu-reichen Erze auch in Chalkopyrit eingebaut. Indium ist gleichfalls entweder an Sphalerit oder an Chalkopyrit gebunden. Mit der Temperaturabhängigkeit der Sphaleritzusammensetzung gehen auch systematische Trends in der Zusammensetzung von Begleitsulfiden (v. a. Chalkopyrit) einher. In den Erzen des ÖSK wurden komplexe Verteilungsabhängigkeiten seltener Metalle von syngenetischen Mineralisations- sowie metamorph-metasomatischen Remobilisierungs-Prozessen nachgewiesen. Die Faktoren lithostratographischer Kontext, Proximalität zum (nicht aufgeschlossenen) Exhalationszentrum, und metasomatische Remobilisation und Partitionierung sind wichtige Faktoren für die Höffigkeit eines Vorkommens. Metamorphe Überprägung zeigt Auswirkungen auf die mineralogische Metall-Partitionierung, jedoch ohne nennenswerten Effekt auf die Höffigkeit der High-Tech-Metalle.
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22

Fügenschuh, Bernhard, Neil S. Mancktelow und Diane Seward. „Cretaceous to Neogene cooling and exhumation history of the Oetztal-Stubai basement complex, eastern Alps: A structural and fission track study“. Tectonics 19, Nr. 5 (Oktober 2000): 905–18. http://dx.doi.org/10.1029/2000tc900014.

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23

Bamberger, I., L. Hörtnagl, R. Schnitzhofer, M. Graus, T. M. Ruuskanen, M. Müller, J. Dunkl, G. Wohlfahrt und A. Hansel. „Long term BVOC fluxes above mountain grassland“. Biogeosciences Discussions 7, Nr. 1 (06.01.2010): 83–110. http://dx.doi.org/10.5194/bgd-7-83-2010.

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Abstract. Grasslands comprise natural tropical savannah over managed temperate fields to tundra and cover over a quarter of the Earth's land surface. Plant growth, maintenance and decay result in volatile organic compound (VOCs) emissions to the atmosphere. Furthermore, biogenic VOCs (BVOCs) are emitted due to various environmental stresses including cutting and drying during harvesting. Fluxes of BVOCs were measured with a proton-transfer-reaction – mass-spectrometer (PTR-MS) over temperate mountain grassland in Stubai Valley (Tyrol, Austria) over one growing season (2008). VOC fluxes were calculated from the disjunct PTR-MS data using the virtual disjunct eddy covariance method and the gap filling method. The two independent methods obtained methanol fluxes following a regression line of y=0.94x−0.06 (correlation factor: R2=0.94). Methanol showed strong daytime emissions throughout the growing season. With maximal values of 9.7 nmol m−2 s−1 the methanol fluxes from growing grassland were considerably higher at the beginning of the growing season in June compared to those measured during October (2.5 nmol m−2 s−1). During the growth only methanol emissions were observed. The cutting and drying of the grass increased the emissions of methanol, up to 30 nmol m−2 s−2. In addition, emissions of acetaldehyde, up to 10 nmol m−2 s−1, and hexenal (leaf aldehyde) were detected during harvesting.
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24

Schulz, Bernhard. „Petrochronology of Monazite-Bearing Garnet Micaschists as a Tool to Decipher the Metamorphic Evolution of the Alpine Basement“. Minerals 11, Nr. 9 (09.09.2021): 981. http://dx.doi.org/10.3390/min11090981.

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Garnet-bearing metapelites in the Helvetic and Austroalpine pre-Mesozoic polymetamorphic basement are characterised by pressure-temperature path segments reconstructed by microstructurally controlled geothermobarometry, and the Th-U-Pb monazite age distribution pattern revealed by the electron probe microanalyser (EPMA). In the Helvetic Aiguilles Rouges Massif and the Austroalpine Oetztal-Stubai basement to the NW an Ordovician-to-Silurian high temperature event preceded a pressure-dominated Carboniferous metamorphism. In the Austroalpine basement units to the south of the Tauern Window, the maximal pressures of the Carboniferous amphibolite-facies metamorphism range from 12 to 6 kbar. The decompressional P-T path segments signal a transition to low pressure conditions. A subsequent high pressure overprint is restricted to the Prijakt Subgroup unit in the Schobergruppe and documented by Cretaceous monazite crystallisation at 88 ± 6 Ma. In the Austroalpine Saualpe basement to the SE, a distinct early Permian metamorphism which started at low pressures of ~4 kbar/500 °C and reached maximal 6 kbar/600–650 °C predated the intrusion of Permian pegmatites. Permian monazite crystallised in line with the intrusion of pegmatites. Corona microstructures around the Permian monazites indicate retrogression previous to a Cretaceous high pressure metamorphism. That way, pressure-temperature-time paths resolve the spatial and temporal evolution in the polymetamorphic Alpine basement prior to the Tertiary collision.
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25

Rode, Sören, Delia Rösel und Bernhard Schulz. „Constraints on the Variscan P-T evolution by EMP Th-U-Pb monazite dating in the polymetamorphic Austroalpine Oetztal-Stubai basement (Eastern Alps)“. Zeitschrift der Deutschen Gesellschaft für Geowissenschaften 163, Nr. 1 (01.03.2012): 43–67. http://dx.doi.org/10.1127/1860-1804/2012/0163-0043.

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26

Goločorbin, Stanko. „STATIČKA MKE ANALIZA I ANALIZA OSCILOVANJA STUBA VETROGENERATORA“. Zbornik radova Fakulteta tehničkih nauka u Novom Sadu 36, Nr. 01 (25.12.2020): 27–30. http://dx.doi.org/10.24867/11am09golocorbin.

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Stubovi vetrogeneratora su jedni od najkompleksnije opterećenih stubova (tornjeva) koji postoje u građevini. Uzimajući u obzir da promenljiva priroda brzine vetra intenzivno menja opterećenje na stub u vidu ekscentričnog momenta. Cilj ovog istraživanja je dobijanje rezultata statičke MKE analize u vidu napona prema kojoj možemo, shodno najvećim naponima, promeniti dizajn samog modela stuba vetrogeneratora. Takođe istraživanjem oscilacija stuba i pronalaženjem sopstvenih kružnih frekvencija oscilovanja dobijamo zanje o brzini obrtaja rotora koju treba da ograničimo da stub ne bi mogao da uđe u rezonantni režim. U radu je prikazana primena metode konačnih elemenata (MKE) pri pronalaženju napona stuba pomoću ABAQUS – softvera i primena teorije oscilacija pri pronalaženju sopstvenih kružnih frekvencija i maksimalnih amplituda pomoću Mathematica – softvera, 3D model korišten za MKE analizu je izrađen u Solidworks – softveru.
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27

Goločorbin, Stanko. „STATIČKA MKE ANALIZA I ANALIZA OSCILOVANJA STUBA VETROGENERATORA“. Zbornik radova Fakulteta tehničkih nauka u Novom Sadu 36, Nr. 01 (25.12.2020): 27–30. http://dx.doi.org/10.24867/11am09golocorbin.

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Stubovi vetrogeneratora su jedni od najkompleksnije opterećenih stubova (tornjeva) koji postoje u građevini. Uzimajući u obzir da promenljiva priroda brzine vetra intenzivno menja opterećenje na stub u vidu ekscentričnog momenta. Cilj ovog istraživanja je dobijanje rezultata statičke MKE analize u vidu napona prema kojoj možemo, shodno najvećim naponima, promeniti dizajn samog modela stuba vetrogeneratora. Takođe istraživanjem oscilacija stuba i pronalaženjem sopstvenih kružnih frekvencija oscilovanja dobijamo zanje o brzini obrtaja rotora koju treba da ograničimo da stub ne bi mogao da uđe u rezonantni režim. U radu je prikazana primena metode konačnih elemenata (MKE) pri pronalaženju napona stuba pomoću ABAQUS – softvera i primena teorije oscilacija pri pronalaženju sopstvenih kružnih frekvencija i maksimalnih amplituda pomoću Mathematica – softvera, 3D model korišten za MKE analizu je izrađen u Solidworks – softveru.
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28

Bamberger, I., L. Hörtnagl, R. Schnitzhofer, M. Graus, T. M. Ruuskanen, M. Müller, J. Dunkl, G. Wohlfahrt und A. Hansel. „BVOC fluxes above mountain grassland“. Biogeosciences 7, Nr. 5 (06.05.2010): 1413–24. http://dx.doi.org/10.5194/bg-7-1413-2010.

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Abstract. Grasslands comprise natural tropical savannah over managed temperate fields to tundra and cover one quarter of the Earth's land surface. Plant growth, maintenance and decay result in volatile organic compound (VOCs) emissions to the atmosphere. Furthermore, biogenic VOCs (BVOCs) are emitted as a consequence of various environmental stresses including cutting and drying during harvesting. Fluxes of BVOCs were measured with a proton-transfer-reaction-mass-spectrometer (PTR-MS) over temperate mountain grassland in Stubai Valley (Tyrol, Austria) over one growing season (2008). VOC fluxes were calculated from the disjunct PTR-MS data using the virtual disjunct eddy covariance method and the gap filling method. Methanol fluxes obtained with the two independent flux calculation methods were highly correlated (y = 0.95×−0.12, R2 = 0.92). Methanol showed strong daytime emissions throughout the growing season – with maximal values of 9.7 nmol m−2 s−1, methanol fluxes from the growing grassland were considerably higher at the beginning of the growing season in June compared to those measured during October (2.5 nmol m−2 s−1). Methanol was the only component that exhibited consistent fluxes during the entire growing periods of the grass. The cutting and drying of the grass increased the emissions of methanol to up to 78.4 nmol m−2 s−1. In addition, emissions of acetaldehyde (up to 11.0 nmol m−2 s−1), and hexenal (leaf aldehyde, up to 8.6 nmol m−2 s−1) were detected during/after harvesting.
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Fondevilla, Cristian, M. Àngels Colomer, Federico Fillat und Ulrike Tappeiner. „Using a new PDP modelling approach for land-use and land-cover change predictions: A case study in the Stubai Valley (Central Alps)“. Ecological Modelling 322 (Februar 2016): 101–14. http://dx.doi.org/10.1016/j.ecolmodel.2015.11.016.

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Ruuskanen, T. M., M. Müller, R. Schnitzhofer, T. Karl, M. Graus, I. Bamberger, L. Hörtnagl, F. Brilli, G. Wohlfahrt und A. Hansel. „Eddy covariance VOC emission and deposition fluxes above grassland using PTR-TOF“. Atmospheric Chemistry and Physics Discussions 10, Nr. 9 (02.09.2010): 21077–108. http://dx.doi.org/10.5194/acpd-10-21077-2010.

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Abstract. Eddy covariance (EC) is the preferable technique for flux measurements since it is the only direct flux determination method. It requires a continuum of high time resolution measurements (e.g. 5–20 Hz). For volatile organic compounds (VOC) soft ionization via proton transfer reaction has proven to be a quantitative method for real time mass spectrometry; here we use a proton transfer reaction time of flight mass spectrometer (PTR-TOF) for 10 Hz EC measurements of full mass spectra up to m/z 315. The mass resolution of the PTR-TOF enabled the identification of chemical formulas and separation of oxygenated and hydrocarbon species exhibiting the same nominal mass. We determined 481 ion mass peaks from ambient air concentration above a managed, temperate mountain grassland in Neustift, Stubai Valley, Austria. During harvesting we found significant fluxes of 18 compounds distributed over 43 ions, including protonated parent compounds, as well as their isotopes and fragments and VOC-H+-water clusters. The dominant BVOC fluxes were methanol, acetaldehyde, ethanol, hexenal and other C6 leaf wound compounds, acetone, acetic acid, monoterpenes and sequiterpenes. The smallest reliable fluxes we determined were less than 0.1 nmol m−2 s−1, as in the case of sesquiterpene emissions from freshly cut grass. Terpenoids, including mono- and sesquiterpenes, were also deposited to the grassland before and after the harvesting. During cutting, total VOC emission fluxes up to 200 nmol C m−2 s−1 were measured. Methanol emissions accounted for half of the emissions of oxygenated VOCs and a third of the carbon of all measured VOC emissions during harvesting.
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Fischer, Andrea, Marc Olefs und Jakob Abermann. „Glaciers, snow and ski tourism in Austria’s changing climate“. Annals of Glaciology 52, Nr. 58 (2011): 89–96. http://dx.doi.org/10.3189/172756411797252338.

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AbstarctThis study illustrates the relevance of cryospheric changes for, and their impact on, ski tourism in Austria. The results of several case studies on snow reliability, snow production and mass balance in glacier ski resorts in the Ötz and Stubai valleys are summarized. Climate data from Obergurgl (1936ma.s.l.) in the Ötz valley are analyzed with respect to the amount and duration of natural snow cover and the possibility of snow production. A case study on Mittelbergferner focuses on the impacts of glacial recession on a ski resort and possible adaptation measures. From long-term glacier inventory and short-term mass-balance data, the effect of operating ski resorts on glaciers is investigated. At Obergurgl, the probability of both snow cover and snow production is >80% from December to March and decreases significantly in the months before and after this peak season. The interannual variability of snow cover and production is low during the main season and higher in other months. Year-to-year differences are larger than any long-term trend. Glacier ski resorts must adapt to shrinking glacial area and falling glacier surface. Covering the glacier with textiles reduces ablation by 60% and results in significantly less volume loss than on uncovered parts of the glacier. Neither the mass-balance comparison between groomed and ungroomed areas nor the comparison of long-term volume changes between 10 ski resort glaciers and 100 surrounding glaciers showed evidence for an impact of the operation of ski resorts on the glaciers.
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Feng, Zhongyi, Pascal Bohleber, Sven Ebser, Lisa Ringena, Maximilian Schmidt, Arne Kersting, Philip Hopkins et al. „Dating glacier ice of the last millennium by quantum technology“. Proceedings of the National Academy of Sciences 116, Nr. 18 (17.04.2019): 8781–86. http://dx.doi.org/10.1073/pnas.1816468116.

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Radiometric dating with 39Ar covers a unique time span and offers key advances in interpreting environmental archives of the last millennium. Although this tracer has been acknowledged for decades, studies so far have been limited by the low abundance and radioactivity, thus requiring huge sample sizes. Atom trap trace analysis, an application of techniques from quantum physics such as laser cooling and trapping, allows us to reduce the sample volume by several orders of magnitude compared with conventional techniques. Here we show that the adaptation of this method to 39Ar is now available for glaciological applications, by demonstrating the entire process chain for dating of alpine glacier ice by argon trap trace analysis (ArTTA). Ice blocks as small as a few kilograms are sufficient and have been obtained at two artificial glacier caves. Importantly, both sites offer direct access to the stratigraphy at the glacier base and validation against existing age constraints. The ice blocks obtained at Chli Titlis glacier at 3,030 m asl (Swiss Alps) have been dated by state-of-the-art microradiocarbon analysis in a previous study. The unique finding of a bark fragment and a larch needle within the ice of Schaufelferner glacier at 2,870 m asl (Stubai Alps, Austria) allows for conventional radiocarbon dating. At both sites the existing age information based on radiocarbon dating and visual stratigraphy corroborates the 39Ar ages. With our results, we establish argon trap trace analysis as the key to decipher so far untapped glacier archives of the last millennium.
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Ruuskanen, T. M., M. Müller, R. Schnitzhofer, T. Karl, M. Graus, I. Bamberger, L. Hörtnagl, F. Brilli, G. Wohlfahrt und A. Hansel. „Eddy covariance VOC emission and deposition fluxes above grassland using PTR-TOF“. Atmospheric Chemistry and Physics 11, Nr. 2 (20.01.2011): 611–25. http://dx.doi.org/10.5194/acp-11-611-2011.

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Abstract. Eddy covariance (EC) is the preferable technique for flux measurements since it is the only direct flux determination method. It requires a continuum of high time resolution measurements (e.g. 5–20 Hz). For volatile organic compounds (VOC) soft ionization via proton transfer reaction has proven to be a quantitative method for real time mass spectrometry; here we use a proton transfer reaction time of flight mass spectrometer (PTR-TOF) for 10 Hz EC measurements of full mass spectra up to m/z 315. The mass resolution of the PTR-TOF enabled the identification of chemical formulas and separation of oxygenated and hydrocarbon species exhibiting the same nominal mass. We determined 481 ion mass peaks from ambient air concentration above a managed, temperate mountain grassland in Neustift, Stubai Valley, Austria. During harvesting we found significant fluxes of 18 compounds distributed over 43 ions, including protonated parent compounds, as well as their isotopes and fragments and VOC-H+ – water clusters. The dominant BVOC fluxes were methanol, acetaldehyde, ethanol, hexenal and other C6 leaf wound compounds, acetone, acetic acid, monoterpenes and sequiterpenes. The smallest reliable fluxes we determined were less than 0.1 nmol m−2 s−1, as in the case of sesquiterpene emissions from freshly cut grass. Terpenoids, including mono- and sesquiterpenes, were also deposited to the grassland before and after the harvesting. During cutting, total VOC emission fluxes up to 200 nmolC m−2 s−1 were measured. Methanol emissions accounted for half of the emissions of oxygenated VOCs and a third of the carbon of all measured VOC emissions during harvesting.
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Tenhunen, J., R. Geyer, S. Adiku, M. Reichstein, U. Tappeiner, M. Bahn, A. Cernusca et al. „Influences of changing land use and CO2 concentration on ecosystem and landscape level carbon and water balances in mountainous terrain of the Stubai Valley, Austria“. Global and Planetary Change 67, Nr. 1-2 (Mai 2009): 29–43. http://dx.doi.org/10.1016/j.gloplacha.2008.12.010.

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Kovaleva, Elizaveta, Daniel Harlov und Urs Klötzli. „Complicated secondary textures in zircon record evolution of the host granitic rocks: Studies from Western Tauern Window and Ötztal-Stubai Crystalline Complex (Eastern Alps, Western Austria)“. Lithos 284-285 (Juli 2017): 381–400. http://dx.doi.org/10.1016/j.lithos.2017.04.018.

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Mair, E., G. Bertoldi, G. Leitinger, S. Della Chiesa, G. Niedrist und U. Tappeiner. „ESOLIP – estimate of solid and liquid precipitation at sub-daily time resolution by combining snow height and rain gauge measurements“. Hydrology and Earth System Sciences Discussions 10, Nr. 7 (03.07.2013): 8683–714. http://dx.doi.org/10.5194/hessd-10-8683-2013.

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Abstract. Measuring precipitation in mountain areas is a demanding task, but essential for hydrological and environmental themes. Especially in small Alpine catchments with short hydrological response, precipitation data with high temporal resolution are required for a better understanding of the hydrological cycle. Since most climate/meteorological stations are situated at the easily accessible bottom of valleys, and the few heated rain gauges installed at higher elevation sites are problematic in winter conditions, an accurate quantification of winter (snow) precipitation at high elevations remains difficult. However, there are an increasing number of micro-meteorological stations and snow height sensors at high elevation locations in Alpine catchments. To benefit from data of such stations, an improved approach to estimate solid and liquid precipitation (ESOLIP) is proposed. ESOLIP allows gathering hourly precipitation data throughout the year by using unheated rain gauge data, careful filtering of snow height sensors as well as standard meteorological data (air temperature, relative humidity, global shortwave radiation, wind speed). ESOLIP was validated at a well-equipped test site in Stubai Valley (Tyrol, Austria), comparing results to winter precipitation measured with a snow pillow and a heated rain gauge. The snow height filtering routine and indicators for possible precipitation were tested at a field site in Matsch Valley (South Tyrol, Italy). Results show a good match with measured data because variable snow density is taken into account, which is important when working with freshly fallen snow. Furthermore, the results show the need for accurate filtering of the noise of the snow height signal and they confirm the unreliability of heated rain gauges for estimating winter precipitation. The described improved precipitation estimate ESOLIP at sub-daily time resolution is helpful for precipitation analysis and for several hydrological applications like monitoring systems and rainfall-runoff models.
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Wu, Donghai, Philippe Ciais, Nicolas Viovy, Alan K. Knapp, Kevin Wilcox, Michael Bahn, Melinda D. Smith et al. „Asymmetric responses of primary productivity to altered precipitation simulated by ecosystem models across three long-term grassland sites“. Biogeosciences 15, Nr. 11 (11.06.2018): 3421–37. http://dx.doi.org/10.5194/bg-15-3421-2018.

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Abstract. Field measurements of aboveground net primary productivity (ANPP) in temperate grasslands suggest that both positive and negative asymmetric responses to changes in precipitation (P) may occur. Under normal range of precipitation variability, wet years typically result in ANPP gains being larger than ANPP declines in dry years (positive asymmetry), whereas increases in ANPP are lower in magnitude in extreme wet years compared to reductions during extreme drought (negative asymmetry). Whether the current generation of ecosystem models with a coupled carbon–water system in grasslands are capable of simulating these asymmetric ANPP responses is an unresolved question. In this study, we evaluated the simulated responses of temperate grassland primary productivity to scenarios of altered precipitation with 14 ecosystem models at three sites: Shortgrass steppe (SGS), Konza Prairie (KNZ) and Stubai Valley meadow (STU), spanning a rainfall gradient from dry to moist. We found that (1) the spatial slopes derived from modeled primary productivity and precipitation across sites were steeper than the temporal slopes obtained from inter-annual variations, which was consistent with empirical data; (2) the asymmetry of the responses of modeled primary productivity under normal inter-annual precipitation variability differed among models, and the mean of the model ensemble suggested a negative asymmetry across the three sites, which was contrary to empirical evidence based on filed observations; (3) the mean sensitivity of modeled productivity to rainfall suggested greater negative response with reduced precipitation than positive response to an increased precipitation under extreme conditions at the three sites; and (4) gross primary productivity (GPP), net primary productivity (NPP), aboveground NPP (ANPP) and belowground NPP (BNPP) all showed concave-down nonlinear responses to altered precipitation in all the models, but with different curvatures and mean values. Our results indicated that most models overestimate the negative drought effects and/or underestimate the positive effects of increased precipitation on primary productivity under normal climate conditions, highlighting the need for improving eco-hydrological processes in those models in the future.
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Meyer, S., J. Leifeld, M. Bahn und J. Fuhrer. „Free and protected soil organic carbon dynamics respond differently to abandonment of mountain grassland“. Biogeosciences Discussions 8, Nr. 5 (06.10.2011): 9943–76. http://dx.doi.org/10.5194/bgd-8-9943-2011.

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Abstract. Land-use change (LUC) and management are among the major driving forces of soil carbon (C) storage. Abandonment of mountain grassland promotes accumulation of aboveground biomass and litter, but related responses of soil organic matter (SOM) dynamics are uncertain. To determine SOM-C turnover we sampled 0–10 cm of soils along land-use gradients (hay meadows, grazed pastures and abandoned grasslands) in the European Alps varying in management intensity at Stubai Valley (MAT: 3 °C, P: 1097 mm) in Austria and Matsch Valley (MAT: 6.6 °C, P: 527 mm) in Italy. We determined C input and decomposition rates of labile water-floatable and free particulate organic matter (wPOM, fPOM <1.6 g cm−3) and stable aggregate-occluded particulate and mineral-associated organic matter (oPOM <1.6 g cm−3, mOM >1.6 g cm−3) using bomb radiocarbon. At both sites C turnover decreased from w- and fPOM (4–8 yr) to oPOM (76–142 yr) to mOM (142–250 yr). Following abandonment C input pathways shifted from root-derived towards litter-derived C. The decomposition rates of labile wPOM-C declined with a decrease in litter quality, while both C input and C decomposition rates of labile fPOM increased with an increase in litter quantity. In contrast, protected stable SOM-C (oPOM-C, mOM-C) dynamics remained relatively unaffected by grassland abandonment. Carbon accumulation rates of labile POM fractions decreased strongly with time since LUC (10, 25 and 36 yr). For wPOM-C, for example, it decreased from 7.45 &amp;pm; 0.99 to 2.18 &amp;pm; 1.06 to 0.82 &amp;pm; 0.21 g C m−2 yr−1. At both sites, most C was sequestered in the first years after LUC and labile SOM fractions reached new steady state within 20–40 yr. We concluded that w-and fPOM-C vs. oPOM-C dynamics respond differently to grassland management change and thus POM does not represent a homogeneous SOM fraction. Sequestered C is stored in the labile readily decomposable POM fractions and not stabilized in the long-term. Thus it is unlikely that abandonment, the dominant form of LUC in the European Alps, provides a substantial net soil C sink.
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Meyer, S., J. Leifeld, M. Bahn und J. Fuhrer. „Free and protected soil organic carbon dynamics respond differently to abandonment of mountain grassland“. Biogeosciences 9, Nr. 2 (23.02.2012): 853–65. http://dx.doi.org/10.5194/bg-9-853-2012.

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Abstract. Land-use change (LUC) and management are among the major driving forces of soil carbon (C) storage. Abandonment of mountain grassland promotes accumulation of aboveground biomass and litter, but related responses of soil organic matter (SOM) dynamics are uncertain. To determine SOM-C turnover we sampled 0–10 cm of soils in the European Alps along two land-use gradients (hay meadows, grazed pastures and abandoned grasslands) of different management intensity. A first land-use gradient was located at Stubai Valley (MAT: 3 °C, MAP: 1097 mm) in Austria and a second at Matsch Valley (MAT: 6.6 °C, MAP: 527 mm) in Italy. We estimated C input and decomposition rates of water-floatable and free particulate organic matter (wPOM, fPOM <1.6 g cm−3) and aggregate-occluded particulate and mineral-associated organic matter (oPOM <1.6 g cm−3, mOM >1.6 g cm−3) using bomb radiocarbon. In mountain grasslands average C turnover increased from roots (3 yr) < wPOM (5 yr) < fPOM (80 yr) < oPOM (108 yr) < mOM (192 yr). Among SOM fractions the turnover of fPOM-C varied most in relation to management. Along both land-use gradients C input pathways shifted from root-derived towards litter-derived C. The C input rates of both wPOM-C and fPOM-C were affected by land management at both sites. In contrast, oPOM-C and mOM-C dynamics remained relatively stable in response to grassland abandonment. Carbon accumulation rates of free POM decreased strongly with time since LUC (10, 25 and 36 yr). For wPOM-C, for example, it decreased from 7.4 > 2.2> 0.8 g C m−2 yr−1. At both sites, most C was sequestered in the first years after LUC and free POM reached new steady state within 20–40 yr. We conclude that w-and fPOM-C vs. oPOM-C dynamics respond differently to grassland management change and thus POM does not represent a homogeneous SOM fraction. Sequestered C is stored in the labile POM and not stabilized in the long-term. Thus, it is unlikely that abandonment, the dominant form of LUC in the European Alps, provides a substantial net soil C sink.
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Henig, David. „Pohledy z druhého břehu: transnacionalismus, rituál a sociální změna“. Sociální studia / Social Studies 6, Nr. 1 (02.01.2009): 175–92. http://dx.doi.org/10.5817/soc2009-1-175.

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Může v globalizovaném a vzájemně propojeném světě, po postmoderním obratu v sociálních vědách nabídnout antropologie nějakou cestu k porozumění komplexitě lidského života a společnosti? Transnacionální studia poskytují mocný soubor nástrojů k produkci vědění a analýze. Přestože tento přístup přinesl řadu cenných příspěvků a vhledů, provází jej i překážky v podobě určitých předpokladů, jež mohou produkci vědění deformovat. V této studii tvrdím, že transnacionální antropologie může představovat přiměřený způsob produkce vědění o transnacionalismu, kombinující zájem jak o mikropolitiku lidského života, tak i o transnacionální propojenost. Využívám etnografických dat o transnacionálních sítích z Pákistánu, Maroka, Bangladéše a Dagestánu.
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Zech, Michael, Marcel Lerch, Marcel Bliedtner, Tobias Bromm, Fabian Seemann, Sönke Szidat, Gary Salazar et al. „Revisiting the subalpine Mesolithic site Ullafelsen in the Fotsch Valley, Stubai Alps, Austria – new insights into pedogenesis and landscape evolution from leaf-wax-derived <i>n</i>-alkanes, black carbon and radiocarbon dating“. E&G Quaternary Science Journal 70, Nr. 2 (13.07.2021): 171–86. http://dx.doi.org/10.5194/egqsj-70-171-2021.

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Abstract. Archaeological research in high mountain regions has gotten a lot more attention since the discovery of the copper age mummy called “Ötzi” in the Ötztaler Alps in 1991. In the Tyrolean Stubai Alps, the Mesolithic site Ullafelsen at 1869 m a.s.l. (above sea level) close to the recent upper timberline in the Fotsch Valley represents, on the one hand, a very important archaeological reference site and offers, on the other hand, intriguing research questions related to, amongst others, pedogenesis. Given that no biomarkers and stable isotopes have been hitherto investigated, we aimed at contributing with respective analyses and additional radiocarbon dating to a better understanding of the landscape evolution and pedogenesis on and around the Ullafelsen. Our results for modern vegetation suggest that leaf-wax-derived n-alkanes allow us to chemotaxonomically distinguish between subalpine deciduous trees (nC27 predominance) versus (sub)alpine grasses, herbs and dwarf shrubs (nC29, nC31 and/or nC33 predominance). Except for Juniperus, conifers produce no or extremely low n-alkane contents. Although no clear vegetation changes could be inferred from the n-alkane patterns of the investigated soil profiles, the total n-alkane content (TAC) was developed for the first time as an unambiguous proxy for distinguishing between buried (= fossil) topsoils (2Ahb horizons) and humus-enriched subsoils such as Bh horizons of podzols. Based on this leaf wax proxy, we can rule out that the 2Ahb?/Bh? horizons under question on the Ullafelsen are buried topsoils as suggested previously. Dating of the H2O2-pretreated soil samples yielded 14C ages for the podzol Bh horizons ranging from 6.7 to 5.4 cal kyr BP. This is clearly younger than the overlying Mesolithic living floor (LL) (10.9 to 9.5 cal kyr BP) but pre-dates the assumed intensification of alpine pasturing from the Bronze Age onwards. Both the LL and the directly overlying OAh3 horizon yielded black carbon maxima and benzene polycarboxylic acid patterns reflecting fire-induced human impact during the Mesolithic. The discrepancy between the Mesolithic charcoal 14C ages (ages of ≥ 9.5 cal kyr BP) versus the 14C ages obtained for bulk n-alkanes ranging from 8.2 to 4.9 cal kyr BP suggests that non-alkane-producing conifers predominated the vegetation on and around the Ullafelsen after the Mesolithic occupation. Only with the anthropo-zoological lowering of the timberline associated with alpine pasturing since the Neolithic and especially the Bronze Age has an n-alkane-producing vegetation cover (grasses, herbs or dwarf shrubs) started to predominate.
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Sokolová, Hana, und Hynek Cígler. „Test cesty: Normativní česká data pro žáky 9. tříd ZŠ až 4. ročníků SŠ“. TESTFÓRUM 6, Nr. 11 (23.09.2018): 1–20. http://dx.doi.org/10.5817/tf2018-11-197.

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V předkládané studii jsou uvedena normativní česká data pro neuropsychologickou screeningovou zkoušku Test cesty pro věkovou skupinu dospívajících (15-19 let). Potvrdilo se, že není možné přejímat výsledky Testu cesty z jiného kulturního kontextu. Čeští studenti podali statisticky významně horší výkony ve srovnání s českým manuálem k metodě uváděnými normami ze zahraničí i ve srovnání s daty jiných zahraničních studií. Dále byly identifikovány faktory, které se významně podílejí na výsledku v Testu cesty u skupiny českých adolescentů - typ navštěvované střední školy a ročník studia, v protikladu s výsledky jiných výzkumů se neprokázala souvislost výkonu s věkem. Ověřovány byly také psychometrické charakteristiky metody. Pro praktické využití odbornými pracovníky je uveden metodický list pro práci s normami. Získaná data pomohou pracovníkům pedagogicko-psychologických poraden lépe identifikovat žáky s možnou potřebou podpůrných opatření ve vzdělávání, mohou být užitečná také pro klinické psychology při screeningu neurologického oslabení dospívajících.
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Pavlasová, Lenka. „Disertační práce se zaměřením na didaktiku biologie v České republice v letech 2004 – 2013“. Scientia in educatione 6, Nr. 2 (13.12.2015): 4–15. http://dx.doi.org/10.14712/18047106.234.

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Disertační práce je důležitým ukazatelem kvality doktorského studia. V předložené studii byl proveden kvalitativní výzkum 19 disertačních prací z didaktiky biologie obhájených v období let 2004–2013 metodou obsahové analýzy. Byly zkoumány tyto ukazatele: oborové téma, stupeň zkoumané školy, metody sběru dat při výzkumu, počet autocitací a jejich kvalita, případný praktický výstup do praxe a jeho charakter. Autory prací byly z 64 % ženy a z 36 % muži. Oborová témata byla zastoupena nevyváženě, některá byla zcela opomíjena (např. biologie hub). V pracích byly zkoumány všechny stupně školy: preprimární, primární, nižší a vyšší sekundární a vysokoškolský (0–3 a 5–6 podle ISCED97). Hlavní metodou sběru dat byl dotazník, následovaný obsahovou analýzou dokumentů, pozorováním, didaktickým testem a interview. Počet vlastních prací autora citovaných v disertační práci byl značně kolísavý. Práce, které obsahovaly malé množství autocitací, obsahovaly většinou ještě praktický výstup (didaktickou aplikaci) a nebyly výlučně výzkumné.
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Lim, Harold, Herodotos Herodotou und Shivnath Babu. „Stubby“. Proceedings of the VLDB Endowment 5, Nr. 11 (Juli 2012): 1196–207. http://dx.doi.org/10.14778/2350229.2350239.

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Miroshnichenko, Dmitry, Aleksey Firsov, Vadim Timerbaev, Oleg Kozlov, Anna Klementyeva, Lyubov Shaloiko und Sergey Dolgov. „Evaluation of Plant-Derived Promoters for Constitutive and Tissue-Specific Gene Expression in Potato“. Plants 9, Nr. 11 (09.11.2020): 1520. http://dx.doi.org/10.3390/plants9111520.

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Various plant-derived promoters can be used to regulate ectopic gene expression in potato. In the present study, four promoters derived from the potato genome have been characterized by the expression of identical cassettes carrying the fusion with the reporter β-glucuronidase (gusA) gene. The strengths of StUbi, StGBSS, StPat, and StLhca3 promoters were compared with the conventional constitutive CaMV 35S promoter in various organs (leaves, stems, roots, and tubers) of greenhouse-grown plants. The final amount of gene product was determined at the post-transcriptional level using histochemical analysis, fluorometric measurements, and Western blot analysis. The promoter strength comparison demonstrated that the StUbi promoter generally provided a higher level of constitutive β-glucuronidase accumulation than the viral CaMV 35S promoter. Although the StLhca3 promoter was predominantly expressed in a green tissue-specific manner (leaves and stems) while StGBSS and StPat mainly provided tuber-specific activity, a “promoter leakage” was also found. However, the degree of unspecific activity depended on the particular transgenic line and tissue. According to fluorometric data, the functional activity of promoters in leaves could be arranged as follows: StLhca3 > StUbi > CaMV 35S > StPat > StGBSS (from highest to lowest). In tubers, the higher expression was detected in transgenic plants expressing StPat-gusA fusion construct, and the strength order was as follows: StPat > StGBSS > StUbi > CaMV 35S > StLhca3. The observed differences between expression patterns are discussed considering the benefits and limitations for the usage of each promoter to regulate the expression of genes in a particular potato tissue.
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Jamrozik, Katarzyna, und Małgorzata Korczyńska-Derkacz. „Problematyka prasoznawcza na łamach wybranych polskich czasopism bibliologicznych“. Przegląd Biblioteczny 85, Nr. 4 (29.12.2017): 443–76. http://dx.doi.org/10.36702/pb.460.

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Teza/cel artykułu – Wspólny rodowód bibliologii i prasoznawstwa oraz podobieństwa w zakresie przedmiotu badań, stosowanej metodologii, celów badań i miejsca w klasyfikacji nauk powodują jednoczesne prezentowanie tematyki obu tych dyscyplin w czasopismach o charakterze bibliologicznym. Celem artykułu było zbadanie obecności tematyki prasoznawczej w czasopismach wydawanych przez instytuty kształcące pracowników książki we Wrocławiu, w Warszawie, w Krakowie, w Kielcach, w Toruniu. Analizie poddano siedem tytułów i ich kontynuacje: seria „Bibliotekoznawstwo” (kontynuacja: „Studia o Książce i Informacji”), „Studia o Książce”, „Roczniki Biblioteczne”, „Z badań nad Polskimi Księgozbiorami Historycznymi” (kontynuacja: „Z Badań nad Książką i Księgozbiorami Historycznymi”), „Rocznik Naukowo-Dydaktyczny. Prace Bibliotekoznawcze” (kontynuacja: „Annales Universitatis Paedagogicae Cracoviensis Studia ad Bibliothecarum Scientiam Pertinentia”), „Kieleckie Studia Bibliologiczne” (kontynuacje: „Studia Bibliologiczne Akademii Świętokrzyskiej”, „Rocznik Bibliologiczno-Prasoznawczy”) oraz „Toruńskie Studia Bibliologiczne”. Metoda badań – wykorzystana została metoda analizy ilościowej, gdzie jednostką obliczeniową był artykuł (nie uwzględniano recenzji, przeglądów i polemik) o tematyce prasoznawczej, opublikowany na łamach wybranego czasopisma bibliologicznego. Wyniki i wnioski – badanie wykazało, iż tylko 14% wszystkich opublikowanych artykułów naukowych porusza problematykę prasoznawczą. Potwierdziło też znaczne rozproszenie artykułów naukowych.
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Bendl, S., H. Voňková und M. Zvírotský. „Impact of the Bologna process two-cycle implementation on teacher education in the Czech Republic“. Pedagogická orientace 23, Nr. 6 (05.02.2014): 767–85. http://dx.doi.org/10.5817/pedor2013-6-767.

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V důsledku implementace Boloňského procesu byla v České republice rozdělena pětiletá magisterská studia učitelství na tříleté bakalářské a dvouleté navazující magisterské studium. Cílem tohoto článku je popsat vývoj strukturace studia učitelství v České republice a uvést výsledky výzkumného šetření názorů akademických pracovníků a studentů Pedagogické fakulty Univerzity Karlovy v Praze na tuto strukturaci. V první a druhé části jsou shrnuty cíle Boloňského procesu a ohlasy na strukturaci studií v obecné rovině. Ve třetí části je analyzována strukturace studií od jejího zavedení do právního řádu České republiky až po současnou úspěšnou akreditaci neděleného studia na jedné z pedagogických fakult a postupnou tendenci k opětovnému zavádění nedělených studií učitelství. Ve čtvrté části příspěvku jsou uvedeny výsledky výzkumného šetření. Ukázalo se, že přibližně devět z deseti akademických pracovníků v roce 2006 nesouhlasilo se zavedením strukturovaného studia na fakultě a že v průběhu času nedošlo k významné změně jejich názorů. Navíc více než šedesát procent akademických pracovníků nesouhlasí s paralelní existencí obou typů studií. Oproti akademickým pracovníkům preferují studenti strukturovaná studia (7:3). Většina studentů bakalářského studia hodlá pokračovat v navazujícím magisterském studiu, což poukazuje na to, že dělení do dvou cyklů je více méně formální záležitostí.
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Chang, Ya-Chu, Marissa K. Oram und Anja-Katrin Bielinsky. „SUMO-Targeted Ubiquitin Ligases and Their Functions in Maintaining Genome Stability“. International Journal of Molecular Sciences 22, Nr. 10 (20.05.2021): 5391. http://dx.doi.org/10.3390/ijms22105391.

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Small ubiquitin-like modifier (SUMO)-targeted E3 ubiquitin ligases (STUbLs) are specialized enzymes that recognize SUMOylated proteins and attach ubiquitin to them. They therefore connect the cellular SUMOylation and ubiquitination circuits. STUbLs participate in diverse molecular processes that span cell cycle regulated events, including DNA repair, replication, mitosis, and transcription. They operate during unperturbed conditions and in response to challenges, such as genotoxic stress. These E3 ubiquitin ligases modify their target substrates by catalyzing ubiquitin chains that form different linkages, resulting in proteolytic or non-proteolytic outcomes. Often, STUbLs function in compartmentalized environments, such as the nuclear envelope or kinetochore, and actively aid in nuclear relocalization of damaged DNA and stalled replication forks to promote DNA repair or fork restart. Furthermore, STUbLs reside in the same vicinity as SUMO proteases and deubiquitinases (DUBs), providing spatiotemporal control of their targets. In this review, we focus on the molecular mechanisms by which STUbLs help to maintain genome stability across different species.
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Breij, Bé. „Scholasticorum studia“. Mnemosyne 62, Nr. 2 (2009): 320–22. http://dx.doi.org/10.1163/156852508x321400.

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Kemp, Martin. „Stubbs' seeing“. Nature 390, Nr. 6658 (November 1997): 348. http://dx.doi.org/10.1038/37012.

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