ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

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
  • Springer  (12)
  • Wiley-Blackwell  (2)
  • 2010-2014
  • 2000-2004
  • 1980-1984  (14)
  • 1975-1979
  • 1965-1969
  • 1905-1909
  • 1983  (14)
  • 1
    Electronic Resource
    Electronic Resource
    Crystal and molecular structure of (η5)-C5H5)Co(HNC6H4NH), a cobalto-quinonediimine complex (1983)
    Springer
    Journal of chemical crystallography 13 (1983), S. 317-323 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The X-ray structure determination of (η 5-C5H5)Co(HNC6H4NH) (Ib) reveals that the compound crystallizes in the monoclinic space groupP21/n witha=12.479(3),b=8.865(2),c=17.817(5) Å, {iβ}=94.70(2)°,V=1964.4(6) Å3,Z=8 (two independent molecules form the asymmetric unit). Least-squares refinement based on 1894 independent observed reflections,I≥2.5σ(I), resulted in a finalR value of 0.054. A pattern of somewhat shortened Co-N bonds (〈av〉 1.83 Å), short C-N bonds (〈av〉 1.34 Å), Co-N-C bond angles consistent with trigonally hybridized N, and a nearly planar metallocyclic ring suggest that some electron delocalization may exist in the ring. This pattern, however, may also be explicable in terms of factors other than delocalization; alternatives are discussed. The structure may best be regarded as a CoI complex containing ano-quinonediimine ligand.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01161295
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Polychlorinated biphenyls in the fish and sediment of the Lower Fox River, Wisconsin (1983)
    Springer
    Bulletin of environmental contamination and toxicology 30 (1983), S. 58-64 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Conclusions Pollution abatement technologies instituted by recycling paper mills have resulted in a decrease in PCBs in final effluents discharged to the Lower Fox River. Concurrent declines in fish PCB body burdens have also been noted. It is not certain, however, whether the resultant decrease in PCB final effluent concentrations is sufficient to protect aquatic life from bioaccumulation of PCBs above an acceptable level. Furthermore, sediment PCB concentrations remain high in previously impacted areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01610099
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Toxicity and intracellular localization of carbaryl and 1-naphthol in cell cultures derived from goldfish (1983)
    Springer
    Bulletin of environmental contamination and toxicology 30 (1983), S. 99-104 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01610105
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Toxicity of carbaryl and 1-naphthol to goldfish (Carassius auratus) and killifish (Fundulus heteroclitus) (1983)
    Springer
    Bulletin of environmental contamination and toxicology 31 (1983), S. 526-529 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01605469
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    A simplified method for in situ embedding of monolayer cultures for electron microscopy (1983)
    Springer
    Methods in cell science 8 (1983), S. 41-44 
    Details
    ISSN: 1573-0603
    Keywords: cell culture ; in situ embedding ; electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A simple method for the in situ embedding of cell cultures for electron microscopy has been developed. The procedure is carried out in its entirety within the culture flask, using only standard fixing and embedding reagents. Precoating of the supporting surface of the flask with alternative substrates is not required. This method permits precise orientation of samples with respect to the phase-contrast image of living cultures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01834634
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Regulation of swelling of etiolated-wheat-leaf protoplasts by phytochrome and gibberellic acid (1983)
    Springer
    Planta 158 (1983), S. 416-421 
    Details
    ISSN: 1432-2048
    Keywords: Gibberellin and protoplast swelling ; Phytochrome ; Protoplast (swelling) ; Triticum (protoplast swelling)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effect of light on the size of intact protoplasts isolated from the primary leaves of etiolated Triticum aestivum was studied. A 2-min red-light irradiation in the presence of 1 mM KCl was sufficient to cause a swelling of protoplasts compared with those maintained in darkness. The effect was photoreversible by far-red light over two light cycles, indicating the involvement of phytochrome. At 4°C, escape from reversibility occurred between 2 and 5 min after the exposure to red light. In exposure-response experiments, 20 s red light at 27 μmol m-2s-1 was sufficient to saturate the response. Exogenous gibberellic acid added in darkness in the presence of KCl also induced protoplast swelling. Gibberellins may act as an intermediate in the phytochrome-induced swelling of protoplasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00397734
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Reproduction and development of the South American freshwater stingrays,Potamotrygon circularis and P. motoro (1983)
    Springer
    Environmental biology of fishes 9 (1983), S. 3-24 
    Details
    ISSN: 1573-5133
    Keywords: Amazonia ; Batoidea ; Brazil ; Captive breeding ; Chondrichthyes ; Colombia ; Elasmobranchii ; Freshwater adaptation ; Growth rate ; Potamotrygonidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis Observations of reproductive features and body measurements were made on wild-caught, freshwater stingrays, Potamotrygon circularis and P. motoro, from the Amazon drainage of western Brazil and southern Colombia. Further observations were made in Detroit's Belle Isle Aquarium on a captive pair of P. motoro and their descendants, which constitute the first known captive breeding colony of potamotrygonids. The gross structure and function of female and male reproductive systems are described. There is no obvious difference between those of the two species. They are aplacentally viviparous, the young being nourished in advanced stages by uterine milk secreted by trophonemata. Size at onset and completion of sexual maturation, breeding season and behavior, gestation period, litter size and sex ratios are discussed. Up to 21 proportional measurements were made on several fetal and postnatal stages of both species. Several proportional changes occur in very early fetal life, but most body proportions undergo only minor changes from advanced fetal through adult stages. A growth curve is proposed for P. motoro based on observations of the captive colony.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00001055
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    31P- und 195Pt-NMR-Untersuchungen an Diplatin(I)-Komplexen des Typs [Pt2(μ-SPR2)2L2] (L = PR3, PhP(OPh)2, P(OPh)3, CNR)VIII. Mitteilung aus der Reihe Sekundäre Phosphinochalkogenide; VII. Mitteilung s. (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 504 (1983), S. 117-127 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 31P and 195Pt N.M.R. Investigations on Diplatinum (I) Complexes of the Type [Pt2(μ-SPR2)2L2] (L = PR3, PhP(OPh)2, P(OPh)3, CNR)31P-, 195Pt-chemical shifts and 195Pt-31P- resp. 31P-31P-coupling constants of a series of doubly bridged diplatinum(I) complexes are reported. 31P-coordination chemical shifts of the terminal ligands of complexes of type [Pt2(μ-SPR2)2(P′R3′)2] and some of the various coupling constants are strongly influenced by the π-acceptor strength of these ligands. J(195Pt-195Pt) is found to change the sign among the series of complexes investigated. Thermal singlett triplet exitation giving rise to the paramagnetism of these complexes observed by preliminary EPR-measurements and confirmed by EHT-calculations is deduced from the large values of 2J(P-P′) and 3J(P′P′) as well as the unusually high temperature dependence of some coupling constants and other NMR features. The chemical stability of the doubly bridged core, the coordination shifts of the bridging phosphorus atoms and EHT-calculations suggest a view of aromaticity of the [Pt2(μ-SPR2)2](M-M) unit of these complexes.
    Notes: Es werden 31P-, 195Pt-chemische Verschiebungen und 195Pt31P-Kopplungskonstanten einer Reihe von doppelt verbrückten Diplatin(I)-Komplexen mitgeteilt. 31P-koordinationschemische Verschiebungen der ternären Liganden von Komplexen des Typs [Pt2(μ-SPR2)2(P′R3′)2] und verschiedene Kopplungskonstanten werden stark von der π-Akzeptor-Stärke dieser Liganden beeinflußt. J(195P-195Pt) wird innerhalb der Reihe der untersuchten Komplexe mit wechselndem Vorzeichen gefunden. Aus den großen Werten von 2J(Pt-P′) und 3J(P′P′) sowie der ungewöhnlich starken Temperaturabhängigkeit einiger Kopplungskonstanten und anderen NMR-Eigenschaften wird auf Paramagnetismus dieser Komplexe aufgrund thermischer Singlett-Triplett-Anregung geschlossen, der in vorläufigen EPR-Messungen gefunden und durch EHT-Rechnungen gestützt wird. Die chemische Stabilität des doppelt verbrückten Kerns, die koordinationschemischen Verschiebungen der Brückenphosphoratome und EHT-Rechnungen weisen auf Aromatizität der [Pt2(μ-SPR2)2](M-M)-Einheit dieser Komplexe hin.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19835040915
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    NMR-spektroskopische Untersuchungen an 15N-markierten Phenylamidochlorocyclotetraphosphazenen (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 504 (1983), S. 138-146 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: NMR Spectroscopic Studies of 15N Labelled PhenylamidochlorocyclotetraphosphazenesSome endocyclically 15N labelled phenylamidochlorocyclotetraphosphazenes, 15N4P4Cl7NHPh, 6,8-15N4P4Cl6(NHPh)2 and 4,8-15N4P4Cl6(NHPh)2, as well as the corresponding exocyclically 15N labelled compounds N4P4Cl715NHPh, 6,8-N4P4Cl6(15NHPh)2 and 4,8-N4P4Cl6(15NHPh)2 were prepared, and the 31P and 15N NMR spectra were recorded. In the case of the endocyclically labelled compounds it is possible to determine the relative signs of the coupling constants 1JPN by means of spectra simulation. In order to interprete the relatively large coupling constants 3JPN to the exocyclic nitrogen a Karplus diagram was calculated and discussed.
    Notes: Einige endocyclisch 15N-markierte Phenylamidochlorocyclotetraphosphazene, 15N4P4Cl7NHPh, 6,8-15N4P4Cl6(NHPh)2 und 4,8-15N4P4Cl6(NHPh)2, sowie die entsprechenden exocyclisch 15N-markierten Verbindungen N4P4Cl715NHPh, 6,8-N4P4Cl6(15NHPh)2 und 4,8-N4P4Cl6(15NHPh)2 wurden dargestellt und die 31P- und 15N-NMR-Spektren aufgenommen. Für die endocyclisch markierten Verbindungen lassen sich die relativen Vorzeichen der Kopplungskonstanten 1JPN über Spektrensimulationen bestimmen. Zur Erklärung der verhältnismäßig großen Kopplungskonstanten 3JPN zum exocyclischen Stickstoff wurde ein Karplusdiagramm berechnet und diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19835040918
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    facet.materialart.
    Unknown
    Toxicity of carbaryl and 1-naphthol to goldfish (Carassius auratus) and killifish (Fundulus heteroclitus) (1983)
    Springer
    Details
    Publication Date: 1983-11-01
    Print ISSN: 0007-4861
    Electronic ISSN: 1432-0800
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...