GLORIA

GEOMAR Library Ocean Research Information Access

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
  • 1
    Electronic Resource
    Electronic Resource
    A spectroscopic and electrochemical study of some copper(II) tetraaza macrocyclic complexes (1987)
    Springer
    Monatshefte für Chemie 118 (1987), S. 463-476 
    Details
    ISSN: 1434-4475
    Keywords: Electron spin resonance ; Polarography ; Ir ; Electronic spectra ; Cyclam type ligand
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wird über Infrarot-, Elektronenanregungs-, Elektronenspinresonanz- und D.C. Polarographie-Daten einiger tetraaza-makrocyclischer Kupfer(II)-Komplexe einschließlich eines neuen Cyclam-Typs als Ligand berichtet. Die Befunde werden hinsichtlich der Strukturen der Komplexe, dem Einfluß vonJahn-Teller-Verdrillungseffekten und Kation-Anion-Wechselwirkungen interpretiert.
    Notes: Abstract Infrared, electronic, electron spin resonance and d.c. polarographic data for some copper(II) tetraaza macrocyclic complexes, involving a novel cyclam type ligand, are reported and are interpreted in terms of the structure of the complexes and the influence ofJahn-Teller distortion effects and cation-anion interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809929
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    An infrared and electronic spectroscopic study of a series of nickel(II) amine complexes (1991)
    Springer
    Monatshefte für Chemie 122 (1991), S. 467-478 
    Details
    ISSN: 1434-4475
    Keywords: Nickel(II) amine complexes ; Electronic spectra ; Infrared spectra ; Cation-anion interactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die qualitative Auswertung von Daten aus Infrarot- und Elektronenspektroskopie von Nickel(II)-Amin-Komplexen erlaubte die Zuordnung einer oktaedrischen (trans-tetragonalen) Symmetrie mit verschieden abgestuften Kation-Anion-Wechselwirkungen. Substituenten am N-Methyl-Liganden tragen signifikant zur Ligandenkonformation, Komplexsymmetrie und Kation-Anion-Wechselwirkung bei. Aus den elektronenspektroskopischen Daten wurden die ParameterDq,B′,C,C/B′, β35 undZ* für jeden Komplex bestimmt und als Kriterium für eine Reihung der Aminliganden herangezogen.
    Notes: Summary Qualitative infrared and electronic spectroscopic data for a series of nickel(II) amine complexes suggest structures involving octahedral (transtetragonal) symmetry and associated with varying degrees of cation-anion interaction. N-methyl ligand substituents contribute significantly to ligand conformations, complex symmetry, and cation-anion steric interactions. From the electronic data, the parametersDq,B′,C,C/B′, β35, andZ* are determined for each complex and a spectrochemical and nephelauxetic series is proposed for the associated amine ligands.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809798
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Coexistence and the productivity of white clover-perennial ryegrass mixtures (1989)
    Springer
    Theoretical and applied genetics 77 (1989), S. 65-70 
    Details
    ISSN: 1432-2242
    Keywords: Coexistence ; White clover ; Perennial ryegrass
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Yield comparisons between five white cloverperennial ryegrass mixtures, whose individual components had previously coexisted, and a corresponding set of ten mixtures based on components that had not coexisted disclosed a yield advantage to the former group of 8.5% over a 4-year period. All five clover populations produced their highest yields when associated with their coexisting grass. The coexisting mixtures also yielded more grass in spring, probably due to the exotic origin of the majority of the companion grasses, reinforced by the nitrogen transfer process between clover and grass. The relative proportions of clover attained by the five populations was apparently unaffected by grass companion. These results are briefly discussed in the context of improving the productivity of white clover-perennial ryegrass mixtures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00292317
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The three C's — competition, coexistence and coevolution — and their impact on the breeding of forage crop mixtures (1990)
    Springer
    Theoretical and applied genetics 79 (1990), S. 168-176 
    Details
    ISSN: 1432-2242
    Keywords: Competition ; Coexistence ; Coevolution ; White clover ; Perennial ryegrass
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The role of competition, coexistence and co-evolution in the formation of plant communities is discussed, particularly in relation to the breeding of improved grass/legume mixtures. Competition occurs whenever the demand for a particular resource outstrips supply, with the pressures generated within a species expected to exceed those between species. These pressures must be withstood before populations can coexist within a community. This is accomplished by a process of niche diversification, arising from temporal or spatial differences between the populations, that enables them to draw on resources not readily available to their competitors. Coexistence is crucial to the success of any breeding programme designed to raise the productivity of grass/ legume pastures, because it enables components to adapt not only to the environment which they share, but also to each other. A strategy that improves the “general ecological combining ability” of one or both components by a process of recurrent or reciprocal recurrent unilateral adaptation may prove successful, particularly if existing niche differences are increased thereby. Although both processes may give rise to populations which have apparently coevolved, only those resulting from reciprocal recurrent selection will meet the criteria of specificity and reciprocity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00225947
    Location Call Number Limitation 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...