Results 51 to 60 of about 4,735 (153)
Du rapport des sciences de la nature à l’ensemble de la science
Philosophia ScientiæSpeech given by Helmholtz in 1862 on the occasion of his appointment as Pro-Rector of the University of Heidelberg. The original reference text is: Hermann von Helmholtz, “Über das Verhältnis der Naturwissenschaften zur Gesammtheit der Wissenschaft ...
Hermann von Helmholtz
doaj +1 more source
Crafting the Ocean: The Geographies of Environmental World‐Making
Transactions of the Institute of British Geographers, Volume 51, Issue 1, March 2026.Short Abstract The paper departs from existing analyses of ‘world making’, bringing cultural and environmental geographies into further conversation through linking theories of crafting and world‐making together, through the lens of the contemporary aquarium and nascent oceanic geographies.
Rachael Squire, Kimberley Peters
wiley +1 more source
Aktuelle Bedarfe beim Forschungsdatenmanagement
o-bib. Das offene BibliotheksjournalForschungsdatenmanagement (FDM) mit dem Ziel Forschungsdaten auffindbar, zugänglich, interoperabel und nachnutzbar zu erhalten, gewinnt in den vergangenen Jahren nicht nur an außeruniversitären Forschungseinrichtungen, sondern auch an Universitäten und ...
Christine Jung-Dahlke +1 more
doaj +1 more source
Angewandte Chemie, Volume 138, Issue 7, 9 February 2026.Für die nichtoxidative Ethandehydrierung zu Ethen wurden Katalysatoren mit isolierten Co2+‐Spezies in den 6MR‐ (Co2+‐Z2) und 8MR‐Fenstern ([Co(OH)]+‐Z) eines SSZ‐13‐Zeolithen hergestellt. Die Co2+‐Z2‐Spezies zeigten im Vergleich zu den [Co(OH)]+‐Spezies eine unerwartet hohe Ethenbildungsgeschwindikeit.
Qiyang Zhang +5 more
wiley +1 more source
Advanced Materials, Volume 38, Issue 10, 17 February 2026.Scalable bottom‐up fabrication of Fe3O4 nanodots on Nb:SrTiO3 using anodic alumina templates enables long‐range ordered arrays with diameters down to 30 nm. STEM highlights the epitaxial growth of Fe3O4 films on Nb:SrTiO3. Complementary polarized neutron reflectometry (PNR) and X‐ray magnetic circular dichroism (XMCD) measurements on continuous films ...
Yifan Xu +14 more
wiley +1 more source
Crystal structures of titanium–aluminium and –gallium complexes bearing two μ2-CH3 units
Acta Crystallographica Section E: Crystallographic Communications, 2017 The isotypic crystal structures of two titanocene complexes containing an EMe3 unit (E = Al, Ga; Me = methyl) with two μ2-coordinating methyl groups, namely [μ-1(η5)-(adamantan-1-yl-2κC1)cycylopentadienyl]di-μ2-methyl-methyl-2κC-[1(η5 ...
Tim Oswald +4 more
doaj +1 more source
Direct Synthesis of C-Substituted [RC(O)CH2-CB11H11]− Carborate Anions
InorganicsA new synthetic method for the synthesis of C-substituted [RC(O)CH2-CB11H11]− carborate anions has been developed. The reaction of [closo-B11H11]2− with terminal alkynes in the presence of a copper catalyst leads to insertion into the boron cluster, and ...
Vanessa C. Barra +4 more
doaj +1 more source
Beiträge zur Lehrerinnen- und Lehrerbildung, 2016 Seit der Freigabe des Lehrplans 21 gibt das neue Integrationsfach «Räume, Zeiten, Gesellschaften» (RZG) viel zu reden. Anders als im Bereich «Natur und Technik» (NT), das drei Naturwissenschaften vereint, prallen bei RZG naturwissenschaftliche ...
Rolf Bürki +4 more
doaj +1 more source
Main Group Metal Chemistry, 2017 The organogermane GeH2Cp*2 (1) was synthesized by the reaction of GeCl2Cp*2 (A) with LiAlH4 in quantitative yield, whereas the synthesis of the previously reported compounds SiCl2Cp*2 (B), SnCl2Cp*2 (C), SiClHCp*2 (D) and SiH2Cp*2 (E) followed ...
Fritzsche Ronny +3 more
doaj +1 more source
Crystal structure of 3-{1′-[3,5-bis(trifluoromethyl)phenyl]ferrocenyl}-4-bromothiophene
Acta Crystallographica Section E, 2014 The molecular structure of the title compound, [Fe(C9H6BrS)(C13H7F6)], consists of a ferrocene backbone with a bis(trifluoromethyl)phenyl group at one cyclopentadienyl ring and a thiophene heterocycle at the other cyclopentadienyl ring.
Elisabeth A. Poppitz +2 more
doaj +1 more source