Now showing items 6582-6601 of 6874

    • X-ray and optical properties of X-ray luminous active galactic nuclei 

      Krumpe, Mirko (Univ. Potsdam, 2008)
      Giacconi et al. (1962) discovered a diffuse cosmic X-ray background with rocket experiments when they searched for lunar X-ray emission. Later satellite missions found a spectral peak in the cosmic X-ray background at ~30 ...
    • X-ray diffraction from strongly bent crystals and spectroscopy of X-ray free-electron laser pulses 

      Kaganer, Vladimir M.; Petrov, Ilia; Samoylova, Liubov (Acta Crystallographica Section A, 2019)
      The use of strongly bent crystals in spectrometers for pulses of a hard X-ray free-electron laser is explored theoretically. Diffraction is calculated in both dynamical and kinematical theories. It is shown that diffraction ...
    • X-ray diffraction using focused-ion-beam-prepared single crystals 

      Weigel, Tina; Funke, Claudia; Zschornak, Matthias; Behm, Thomas; Stöcker, Hartmut; Leisegang, Tilmann; Meyer, Dirk C. (Journal of Applied Crystallography, 2020)
      High-quality single-crystal X-ray diffraction measurements are a prerequisite for obtaining precise and reliable structure data and electron densities. The single crystal should therefore fulfill several conditions, of ...
    • XDSGUI: a graphical user interface for XDS, SHELX and ARCIMBOLDO 

      Brehm, Wolfgang; Triviño, Josep; Krahn, Juno M.; Usón, Isabel; Diederichs, Kay (Journal of Applied Crystallography, 2023-09-05)

      XDSGUI is a lightweight graphical user interface (GUI) for the XDS, SHELX and ARCIMBOLDO ...

    • XGANDALF – extended gradient descent algorithm for lattice finding 

      Gevorkov, Yaroslav; Yefanov, Oleksandr; Barty, Anton; White, Thomas A.; Mariani, Valerio; Brehm, Wolfgang; Tolstikova, Aleksandra; Grigat, Rolf-Rainer; Chapman, Henry N. (Acta Crystallographica Section A, 2019-08-30)
      Serial crystallography records still diffraction patterns from single, randomly oriented crystals, then merges data from hundreds or thousands of them to form a complete data set. To process the data, the diffraction ...
    • X‐ray dichroism in polyimide caused by non‐resonant scattering 

      Schulze, K. S.; Loetzsch, R.; Rüffer, R.; Uschmann, I.; Röhlsberger, R.; Paulus, G. G. (Journal of Synchrotron Radiation, 2020-12-22)
      Dichroism is one of the most important optical effects in both the visible and the X‐ray range. Besides absorption, scattering can also contribute to dichroism. This paper demonstrates that, based on the example of polyimide, ...
    • X‐ray diffraction with micrometre spatial resolution for highly absorbing samples 

      Chakrabarti, Prerana; Wildeis, Anna; Hartmann, Markus; Brandt, Robert; Döhrmann, Ralph; Fevola, Giovanni; Ossig, Christina; Stuckelberger, Michael Elias; Garrevoet, Jan; Falch, Ken Vidar; Galbierz, Vanessa; Falkenberg, Gerald; Modregger, Peter (Journal of Synchrotron Radiation, 2022-10-05)
      X‐ray diffraction with high spatial resolution is commonly used to characterize (poly)crystalline samples with, for example, respect to local strain, residual stress, grain boundaries and texture. However, the investigation ...
    • X‐SPEC: a 70 eV to 15 keV undulator beamline for X‐ray and electron spectroscopies 

      Weinhardt, Lothar; Steininger, Ralph; Kreikemeyer-Lorenzo, Dagmar; Mangold, Stefan; Hauschild, Dirk; Batchelor, David; Spangenberg, Thomas; Heske, Clemens (Journal of Synchrotron Radiation, 2021-02-10)
      X‐SPEC is a high‐flux spectroscopy beamline at the KIT (Karlsruhe Institute of Technology) Synchrotron for electron and X‐ray spectroscopy featuring a wide photon energy range. The beamline is equipped with a permanent ...
    • Year‐round sub‐seasonal forecast skill for Atlantic–European weather regimes 

      Büeler, DominikORCIDiD; Ferranti, LauraORCIDiD; Magnusson, LinusORCIDiD; Quinting, Julian F.ORCIDiD; Grams, Christian M.ORCIDiD (Quarterly Journal of the Royal Meteorological Society, 2021-10-25)
      Weather regime forecasts are a prominent use case of sub‐seasonal prediction in the midlatitudes. A systematic evaluation and understanding of year‐round sub‐seasonal regime forecast performance is still missing, however. ...
    • Yield Function of the DOSimetry TELescope Count and Dose Rates Aboard the International Space Station 

      Caprotti, A. S.; Brüdern, M.; Burmeister, S.ORCIDiD; Heber, B.ORCIDiD; Herbst, K.ORCIDiD (Space Weather, 2021-04-28)
      The Earth is constantly hit by energetic particles originating from galactic sources. The flux of these particles is altered by the magnetized solar wind in the heliosphere and the Earth's magnetic field. For this reason, ...
    • Young magmatism and Si‐rich melts on Mars as documented in the enriched gabbroic shergottite NWA 6963 

      Lindner, MilesORCIDiD; Hezel, Dominik C.ORCIDiD; Gerdes, AxelORCIDiD; Marschall, Horst R.ORCIDiD; Brenker, Frank E.ORCIDiD (Meteoritics & Planetary Science, 2022-10-17)
      Enriched shergottites contain interstitial Si‐rich mesostasis; however, it is unclear whether such mesostasis is formed by impact or magmatic processes. We use laser ablation multicollector inductively coupled plasma mass ...
    • Younger Middle Terrace – Saalian pre-Drenthe deposits overlying MIS 7 Nachtigall interglacial strata near Höxter/ Weser, NW-Germany 

      Rohde, Peter; Lepper, Jochen; †, Thiem, Wolfgang (E&G – Quaternary Science Journal; Vol.61, No. 2)
      In einer Subrosionsstruktur über Evaporiten des Oberen Buntsandstein sind im Bergland am Oberlauf der Weser zwischen Höxter und Holzminden pleistozäne warm- und kühlzeitliche „Tone“- und „Torfe“ erhalten geblieben. Sie ...
    • Youngest Cretaceous dinosaur tracksite from the Middle East (Maastrichtian, Farrokhi Formation, Central Iran) 

      Wilmsen, Markus; Fürsich, Franz Theodor; Majidifard, Mahmoud Reza (Palaeobiodiversity and Palaeoenvironments, 2021-12-07)
      A late early Maastrichtian dinosaur trampling site is reported from the Farrokhi Formation of the Khur area, Central Iran. The largely indeterminate footprints, some of which may represent undertracks, can be classified ...
    • Your wetland - hydrology guidelines ; River Murray, South Australia 

      Tucker, Prudence (Australian Landscape Trust, Renmark, SA2002)
      Your Wetland: Hydrology Guidelines is the first of three documents developed for managers of the wetlands that enrich the River Murray of South Australia. These documents consolidate the findings from research, monitoring ...
    • Zeeman-Doppler Imaging of active late-type stars 

      Kopf, Markus (Univ. Potsdam, 2009)
      Stellar magnetic fields, as a crucial component of star formation and evolution, evade direct observation at least with current and near future instruments. However investigating whether magnetic fields are generated by a ...
    • Zeitliche Schwereänderungen und glazio-isostatische Ausgleichsprozesse am Vatnajökull, Südostisland 

      Bürger, Stefan (GFZ, Helmholtz-Zentrum, 2002)
      Der glazio-isostatische Ausgleich in Island als Folge des Abschmelzens der größten europäischen Eiskappe, dem Vatnajökull, verursacht zeitliche Änderungen der Schwere und Landhebung. Nach Auswertung der Schweredaten zeigt ...
    • Zeitschrift für Geophysik 01 

      Angenheister, Gustav H. (Hrsg.); Hecker, O. (Hrsg.); Kossmat, Fr. (Hrsg.); Linke, Fr. (Hrsg.); Schweydar, W. (Hrsg.); Wiechert, E. (Hrsg.) (Zeitschrift für Geophysik; 01; 1924/1925)
      Dieser Band enthält 69 Beiträge zu Themengebieten der Physik der festen Erde, der Physik der Atmosphäre, der Kosmischen Physik sowie der Angewandten Geophysik, veröffentlicht durch die Deutsche Geophysikalische Gesellschaft ...
    • Zeitschrift für Geophysik 02 

      Angenheister, Gustav H. (Hrsg.); Hecker, O. (Hrsg.); Kossmat, Fr. (Hrsg.); Linke, Fr. (Hrsg.); Schweydar, W. (Hrsg.); Wiechert, E. (Hrsg.) (Zeitschrift für Geophysik; 02 ; 1926)
      Dieser Band enthält 84 Beiträge zu Themengebieten der Physik der festen Erde, der Physik der Atmosphäre, der Kosmischen Physik sowie der Angewandten Geophysik, veröffentlicht durch die Deutsche Geophysikalische Gesellschaft ...
    • Zeitschrift für Geophysik 03 

      Angenheister, Gustav H. (Hrsg.); Hecker, O. (Hrsg.); Kossmat, Fr. (Hrsg.); Linke, Fr. (Hrsg.); Schweydar, W. (Hrsg.); Wiechert, E. (Hrsg.) (Zeitschrift für Geophysik; 03 ; 1927)
      Dieser Band enthält 69 Beiträge zu Themengebieten der Physik der festen Erde, des magnetischen und elektrischen Felds der Erde, der Physik der Meere und der Atmosphäre sowie der Angewandten Geophysik, veröffentlicht durch ...