112,579 research outputs found
Wahl Family Collection 1823-1966
No full textMaterials pertaining to the family of Hermann Wahl in Wuppertal-Barmen, GermanydigitizedHermann Wahl (1830-1915) was the owner of the well established fashion store “S. & R. Wahl” in Wuppertal-Barmen, Germany.R. Ries from Ballendorf in Baden-Württemberg might have been a student at the Jewish (?) finishing school ‘P.F. Biberstein’ in Donaueschingen, Germany. She probably was a family member of Hermann Wahl of Barmen, Germany.Photograph removed to Photograph Collectio
Wahl, E H, WX7008
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/423298Surname: WAHL. Given Name(s) or Initials: E H. Military Service Number or Last Known Location: WX7008. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 39556.249813
Item: [2016.0049.55559] "Wahl, E H, WX7008
Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region
No full textAccepted version of the paper "Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region".
An edited version of this paper was published by AGU. Copyright (2022) American Geophysical Union.
Zannoni, D., Steen‐Larsen, H. C., Peters, A. J., Wahl, S., Sodemann, H., & Sveinbjörnsdóttir, A. E. Non‐Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North‐West Atlantic Region. Journal of Geophysical Research: Atmospheres, e2022JD037076. https://doi.org/10.1029/2022JD037076
In accordance with the the Dual Publication Policy of AGU.
Abstract
Ocean isotopic evaporation models, such as the Craig-Gordon model, rely on the description of non-equilibrium fractionation factors that are, in general, poorly constrained. To date, only a few gradient-diffusion type measurements have been performed in ocean settings to test the validity of the commonly used parametrization of non-equilibrium isotopic fractionation during ocean evaporation. In this work we present six months of water vapor isotopic observations collected from a meteorological tower located in the northwest Atlantic Ocean (Bermuda) with the objective of estimating non-equilibrium fractionation factors (k, ‰) for ocean evaporation and their wind speed dependency. The Keeling plot method and Craig-Gordon model combination was sensitive enough to resolve non-equilibrium fractionation factors during evaporation resulting into mean values of k18= 5.2±0.6 ‰ and k2= 4.3±3.4 ‰. Furthermore, we evaluate the relationship between k and 10-m wind speed over the ocean. Such a relationship is expected from current evaporation theory and from laboratory experiments made in the 1970s, but observational evidence is lacking. We show that (i) in the observed wind speed range [0 – 10 m s-1] the sensitivity of k to wind speed is small, in the order of -0.2 ‰ m-1s for k18, and (ii) there is no empirical evidence for the presence of a discontinuity between smooth and rough wind speed regime during isotopic fractionation, as proposed in earlier studies. The water vapor d-excess variability predicted under the closure assumption using the k values estimated in this study is in agreement with observations over the Atlantic Ocean.
Acknowledgments
The work was supported by the Danish Council for Independent Research – Natural Sciences grant number 10-092850 and the Carlsberg Foundation, and the AXA Research Fund. The Tudor Hill Marine Atmospheric Observatory in Bermuda was supported by NSF award OCE1829686. We acknowledge an infrastructure grant (nr. 10/0244) from the Icelandic Research Council (Rannis), that partly covered the cost of the Picarro facilities in Bermuda. HCSL and DZ acknowledges funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 821868. H.S. acknowledges support by the Norwegian Research Council (Project SNOWPACE, grant no. 262710) and by the European Research Council (Consolidator Grant ISLAS, project no. 773245). SW acknowledges funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program: Starting Grant-SNOWISO (grant agreement 759526)
Mr. and Mrs. John H Wahl
No full textPhotograph of Mr. and Mrs. John H Wahl of Oklahoma City, OK, c. 1900-1910
PSYNDEX Tests Review für EW-UO - FRAGEBOGEN ZUR ELTERLICHEN WAHL DES URLAUBSORTES
No full textThis is a PSYNDEX Tests Review of EW-UO - FRAGEBOGEN ZUR ELTERLICHEN WAHL DES URLAUBSORTES. PSYNDEX Tests Reviews are written in German and describe and evaluate psychological and educational tests used in the German-speaking countries. PSYNDEX Tests is offered by the Leibniz Institute for Psychology as open access documentation.Das ist ein PSYNDEX Tests Review zu EW-UO - FRAGEBOGEN ZUR ELTERLICHEN WAHL DES URLAUBSORTES. PSYNDEX Tests Reviews beschreiben und bewerten zentrale psychologische und pädagogische Testverfahren, die in den deutschsprachigen Ländern eingesetzt werden, nach einem standardisierten Raster. PSYNDEX Tests wird durch das Leibniz-Institut für Psychologie als Open Access Dokumentation angeboten.publishedVersio
Ökologische Gerontologie: mehr als die Dolicity-Hypothese?
No full textÖkologische Gerontologie : mehr als d. Dolicity-Hypothese? / H.-W. Wahl ; W. Saup. - In: Zeitschrift für Gerontologie. 27. 1994. S. 347-35
Structure and function of an RNase H domain at the heart of the spliceosome.
No full textPrecursor messenger RNA pre mRNA splicing encompasses two sequential transesterification reactions in distinct active sites of the spliceosome that are transiently established by the interplay of small nuclear sn RNAs and spliceosomal proteins. Protein Prp8 is an active site component but the molecular mechanisms, by which it might facilitate splicing catalysis, are unknown. We have determined crystal structures of corresponding portions of yeast and human Prp8 that interact with functional regions of the pre mRNA, revealing a phylogenetically conserved RNase H fold, augmented by Prp8 specific elements. Comparisons to RNase H substrate complexes suggested how an RNA encompassing a 5 amp; 8242; splice site SS could bind relative to Prp8 residues, which on mutation, suppress splice defects in pre mRNAs and snRNAs. A truncated RNase H like active centre lies next to a known contact region of the 5 amp; 8242;SS and directed mutagenesis confirmed that this centre is a functional hotspot. These data suggest that Prp8 employs an RNase H domain to help assemble and stabilize the spliceosomal catalytic core, coordinate the activities of other splicing factors and possibly participate in chemical catalysis of splicin
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Land near Wahl-Urquhart Ranch
No full textClose-up of bunchgrass and sage near Wahl-Urquhart ranchhttps://digitalcommons.cwu.edu/rufus_woods/1207/thumbnail.jp
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