Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Electronic Resource  (4)
  • 1995-1999  (4)
  • 1965-1969
  • Codazzi tensor  (2)
  • 15,16-Dimethoxy-biladienes-ab  (1)
  • 2,4,6-trinitrotoluene  (1)
Source
Material
  • Electronic Resource  (4)
Years
  • 1995-1999  (4)
  • 1965-1969
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Codazzi Tensors and the Topology of Surfaces (1998)
    Springer
    Annals of global analysis and geometry 16 (1998), S. 189-202 
    Details
    ISSN: 1572-9060
    Keywords: Codazzi tensor ; index method ; topologyof surfaces
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We introduce the notion of (0,m)-Codazzi tensors relative to an affine connection which extends the well known concept for m = 2. On compact Riemannian surfaces of genus γ we determine the dimension of the R-vector space of traceless Codazzi tensors, which depends on m and γ only, additionally we extend these result for genus zero. We give some exemplary applications to submanifolds in affine and in Riemannian geometry and to Weyl geometries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006582620941
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    A novel 16,24-dehydrobiladiene-ab system: The reaction of xanthobilirubic acid methyl ester with bromine (1995)
    Springer
    Monatshefte für Chemie 126 (1995), S. 201-209 
    Details
    ISSN: 1434-4475
    Keywords: 16,24-Dehydrobiladiene-ab ; Biladiene-ab ; Xanthobilirubic acid methyl ester ; Mesobilirubin-XIIIα ; Mesobiliverdin-XIIIα ; 14-Formyl-tripyrrinone ; 15,16-Dimethoxy-biladienes-ab
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Der Umsatz von Xanthobilirubinsäuremethylester mit Brom in Methanol ergibt in 20-prozentiger Ausbeute ein rotes Pigment, für das die bislang nicht bekannte 16,24-Dehydrobiladien-ab-Konstitution abgeleitet wurde. Darüber hinaus konnte das entsprechende Mesobiliverdin-XIIIα, Mesobilirubin-XIIIα, 14-Formyltripyrrinon, und zwei diastereomere 15,16-Dimethoxybiladiene-ab aus der Reaktionsmischung isoliert werden. Die mechanistischen Aspekte dieser Reaktion werden diskutiert.
    Notes: Summary On treating xanthobilirubic acid methyl ester with bromine in methanol, a red bile pigment, which was assigned the hitherto unknown 16,24-dehydrobiladiene-ab constitution, is obtained in 20% yield. In addition, the corresponding mesobiliverdin-XIIIα, mesobilirubin-XIIIα, 14-formyl-tripyrrinone, and two diastereomeric 15,16-dimethoxybiladienes-ab could be isolated from the reaction mixture. The mechanistic aspects of this reaction are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00812248
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The third fundamental form metric for hypersurfaces in nonflat space forms (1999)
    Springer
    Journal of geometry 65 (1999), S. 130-142 
    Details
    ISSN: 1420-8997
    Keywords: 53 B 25 ; 53 C 42 ; 53 C 25 ; third fundamental form metric ; hypersurfaces in nonflat space forms ; Einstein metric ; Codazzi tensor ; isoparametric hypersurfaces
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract For hypersurfaces with regular Weingarten operator in nonflat space forms we study the relations between the intrinsic geometry of the third fundamental form metric and the extrinsic geometry of the hypersurface. We prove a theorema-egregium-type result for this metric and, in particular, give a local classification of hypersurfaces in case of an Einstein structure of this metric.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01228684
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Derivatization and separation of 2,4,6-trinitrotoluene metabolic products (1998)
    Springer
    Biotechnology techniques 12 (1998), S. 839-842 
    Details
    ISSN: 1573-6784
    Keywords: 2,4,6-trinitrotoluene ; 2,4,6-triaminotoluene ; derivatization ; separation ; HPLC
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract 2,4,6-Triaminotoluene (TAT), an oxygen sensitive metabolic product of 2,4,6-trinitrotoluene (TNT) reduction, was derivatized yielding oxygen stable products using a procedure previously employed for the stabilization of other O2sensitive TNT metabolic products. A HPLC method is presented that allows for the separation of diverse intermediates and products of TNT metabolism following the derivatization procedure. © Rapid Science Ltd. 1998
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008833205796
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...