1,721,626 research outputs found
Hans-Wolf Jäger (éd.) : «Öfentlichkeit » im 18. Jahrhundert, 1997
No full textBach Reinhard. Hans-Wolf Jäger (éd.) : «Öfentlichkeit » im 18. Jahrhundert, 1997. In: Dix-huitième Siècle, n°30, 1998. La recherche aujourd'hui, sous la direction de Michel Delon. pp. 549-550
Realkalisierungspotenzial von Trinkwasserbehälterbeschichtungen : Herrn Professor Dr.-Ing. Prof. h.c. Dr.-Ing. E.h. Hans-Wolf Reinhardt zu seinem 80. Geburtstag gewidmet
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Reise und soziale Realität am Ende des 18. Jahrhunderts. Hg. von Wolfgang Griep & Hans-Wolf Jäger, (Coll. «Neue Bremer Beiträge », 1) 1983
No full textBois Pierre-André. Reise und soziale Realität am Ende des 18. Jahrhunderts. Hg. von Wolfgang Griep & Hans-Wolf Jäger, (Coll. «Neue Bremer Beiträge », 1) 1983. In: Dix-huitième Siècle, n°17, 1985. Le protestantisme français en France. p. 407
Zum Gedenken an Otto Graf, universeller Bauforscher in Stuttgart. Abschiedsvorlesung von Prof. Dr.-Ing. H. W. Reinhardt
Get PDFInhalt:
Reinhardt, H.-W.: Otto Graf, Rückschau im Licht von heute (Abschiedsvorlesung am 4. Juli 2006), S. 7 - 41; Gehlen, Christoph: Rede des Direktors der Materialprüfungsanstalt Universität Stuttgart (MPA-Stuttgart / Otto-Graf-Institut (FMPA)) zur Verabschiedung von Herrn Prof. Dr.-Ing. H.-W. Reinhardt am 4. Juli 2006, S. 43 - 55; Thielen, Gerd: Kurze Ansprache des stv. Sprechers des Deutschen Ausschusses für Stahlbeton (DAfStb), S. 57 - 59; Eligehausen, Rolf: Ansprache des stv. Geschäftsführenden Institutsdirektors, S. 61 - 67; Fritsch, Dieter: Grußwort des Rektors der Universität Stuttgart aus Anlass der Abschiedsvorlesung von Herrn Prof. Dr.-Ing. Hans-Wolf Reinhardt, S. 69 - 75; Lebenslauf Hans-Wolf Reinhardt, S. 76; Lebenslauf Otto Graf, S. 77; Aus der Presse, S. 78; Die Autoren, S. 7
Hans-Wolf Rissom, Vater- und Sohnmotive in der romischen Komödie. Dissertation zur Erlangung des Doktorgrades der philosophischen Fakultät der Christian-Albrechts-Universität zu Kiel
No full textKnecht Daniel. Hans-Wolf Rissom, Vater- und Sohnmotive in der romischen Komödie. Dissertation zur Erlangung des Doktorgrades der philosophischen Fakultät der Christian-Albrechts-Universität zu Kiel. In: L'antiquité classique, Tome 41, fasc. 1, 1972. pp. 292-293
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Stille—Heck Coupling Sequences Applied in a Versatile New Access to Steroid Skeletons.
No full textA variety of enantiornerically pure steroidal compounds was synthesized utilizing a sequence of Stille and Heck cross-coupling reactions and subsequent thermal 6 pi-electrocyclizations. Highly chemoselective Stille couplings on the triflate moiety of several 2-bromocyclohex-1-enyl triflates with cis- and trans-fused bicyclo[4.3.0]nonenylstannanes furnished the corresponding tricyclic bromobutadienes in good to excellent yields (70-97 %). These were subjected to Heck reactions with tert-butyl acrylate to provide pentasubstituted tricyclic 1,3,5-hexatrienes. A significant increase in efficiency could be achieved by applying a novel protocol with a precatalyst on the basis of the palladacycle prepared from Pd(OAc)(2) and P(o-Tol)(3) with added triarylphosphines as co-ligands (73-90% yield). Upon heating to 205-215 degrees C in decalin or to 140 degrees C in toluene (for certain cases), these hexatrienes yielded (78-90%) various unsaturated steroid analogues as single diastereomers. A particular oxohexatriene, obtained after deprotection of an adjacent carbonyl group, underwent 6 pi-electrocyclization at the unusually low temperature of 140 degrees C to yield (75%) an interesting 7-carboxyl-substituted steroidal dienone. Attempts to remove the remaining protecting groups from some of the other new steroidal compounds under acidic conditions furnished a novel 3-oxo-7-carboxyl steroid analogue and a 3-hydroxy-substituted steroidal diene. A novel estradiol derivative could be obtained in 69% yield from the synthesized steroidal dienone. Deprotection furnished the corresponding unprotected 7-carboxylestradiol in 81% yield
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