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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis and structure-activity relationships of cephalosporins with C-3' catechol-containing residues (1992)
    s.l. : American Chemical Society
    Journal of medicinal chemistry 35 (1992), S. 2631-2642 
    Details
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jm00092a014
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  • 2
    Electronic Resource
    Electronic Resource
    The structure of tricycloquinazoline (1970)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 26 (1970), S. 1622-1626 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567740870004570
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  • 3
    Electronic Resource
    Electronic Resource
    PPP and CNDO calculations for protonated molecules (1970)
    Springer
    Theoretical chemistry accounts 16 (1970), S. 303-308 
    Details
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung CNDO-Rechnungen wurden benutzt, um die Einzentren-Rumpf-Integrale für protonierte Azine zu erhalten, die bei der Berechnung der π→π * -Absorptionsspektren mit Hilfe der PPP-Methode benötigt werden. Die berechneten Spektren für die Ausgangsmoleküle und die protonierten Moleküle sind in zufriedenstellender Übereinstimmung mit dem Experiment. Die Veränderungen im σ-Rumpf der Moleküle bei der Protonierung werden ebenfalls mit Hilfe der CNDO-Resultate diskutiert.
    Abstract: Résumé Des CNDO ont tét utilisés pour obtenir les intégrales de coeur monocentriques des azines protonées nécessaires au calcul de leur spectre d'absorption π→π * par la méthode PPP. Les spectres calculés pour les molécules protonées ou non sont en accord satisfaisant avec l'expérience. Les modifications subies lors de la protonation par le squelette σ sont discutées en fonction des résultats des calculs CNDO.
    Notes: Abstract CNDO calculations have been used to obtain the one-centre core integrals for protonated azines required in calculating the π→π * absorption spectra of such molecules using the PPP method. Calculated spectra for both the parent and the protonated molecules are obtained in satisfactory agreement with experiment. The changes in the σ-framework of the molecules on protonation are also discussed in terms of the CNDO results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00529431
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  • 4
    Electronic Resource
    Electronic Resource
    Differences between vertical transfers and native students in four-year institutions (1977)
    Springer
    Research in higher education 7 (1977), S. 145-154 
    Details
    ISSN: 1573-188X
    Keywords: transfers ; financial aid ; individual characteristics ; college student ; achievement ; background variable
    Source: Springer Online Journal Archives 1860-2000
    Topics: Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract Data from the National Longitudinal Study of the High School Class of 1972 were drawn to compare those who transfer from two-year colleges and those who enroll in four-year institutions immediately after high school. The comparisons were made on background variables, individual characteristics, and financial aid status. Results indicated that transfers came from lower SES families, and had lower academic ability, high school achievement, and educational aspiration than native students. Transfers were less likely than native students to receive scholarships, fellowships, or grants, and they showed lower achievement in the year after transfer. Implications of these findings are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00981752
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  • 5
    Electronic Resource
    Electronic Resource
    Persistence of motile lymphocytes in cultures of human synovialis (1963)
    Springer
    Cell & tissue research 60 (1963), S. 497-503 
    Details
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331180
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  • 6
    Electronic Resource
    Electronic Resource
    Chromosome number, morphology, pairing, and DNA values of species and hybrids in the genusFallopia (Polygonaceae) (1992)
    Springer
    Plant systematics and evolution 180 (1992), S. 29-52 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Polygonaceae ; Fallopia ; Reynoutria ; Chromosome number ; microdensitometry ; meiosis ; hybridisation ; dioecism ; alien plants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The taxa in this study have in the past been treated together in sect.Tiniaria Meissner ofPolygonum L. s.l., and more recently the large erect rhizomatous herbaceous perennials have been separated from the twining annuals and perennials as the generaReynoutria andFallopia respectively. These taxa range in ploidy level from diploid to octoploid, with base numbers of both 10 and 11 present. The plants are primarily Asiatic in distribution, although many of the large erect perennials are now naturalized in many parts of Europe. Cytological examination has revealed the presence of a number of previously unknown hybrid taxa in the British Isles. The readiness with which hybridisation occurs between taxa of differing base number and ploidy level, and similarities revealed in chromosome morphology, meiotic pairing and in DNA C-value, suggest to the authors that these two genera are best amalgamated underFallopia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00940396
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  • 7
    Electronic Resource
    Electronic Resource
    Chromosome banding and pairing behaviour inFestuca andVulpia (Poaceae, Pooideae) (1992)
    Springer
    Plant systematics and evolution 182 (1992), S. 21-28 
    Details
    ISSN: 1615-6110
    Keywords: Poaceae ; Festuca ; Vulpia ; Polyploidy ; chromosome homology ; Giemsa C-banding ; introgression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Giemsa C-banding patterns of the grassesFestuca rubra (2n = 6x = 42),Vulpia fasciculata (2n = 4x = 28) and their wild F1 hybrid ×Festulpia hubbardii (2n = 5x = 35) show marked differences between the chromosomes of the two parents that enable unequivocal identification ofFestuca andVulpia chromosomes in the hybrid. Moreover, meiotic banding patterns reveal that both homogenetic (Festuca-Festuca andVulpia-Vulpia) and heterogenetic (Festuca-Vulpia) pairing occurs in the F1. The significance of this in relation to the formation of backcrosses to theFestuca parent and to the evolution of theFestuca polyploid complex in general is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00941412
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  • 8
    Electronic Resource
    Electronic Resource
    Vascular networks from explants of human synovialis in vitroSupported in part by grant AM-02520 from the National Institute of Arthritis and Metabolic Diseases, NIH Bethesda, Maryland, and by private funds from Southwestern Clinic & Research Institute, Inc. (1963)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 147 (1963), S. 525-531 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Explants of human synovialis obtained surgically were cultivated under dialysis membrane in the multipurpose Rose chamber and in Eagle's medium enriched with 20% pooled human cord sera. Within 24 hours monocytes and lymphocytic cells emerged from the majority of explants while spindle and stellate cells appeared later on the second and third days of culture. A monolayer of cells developed in which active mitosis was observed. Between 12 to 15 days, fingerlike projections of cells adjacent to the explants branched out between the cover glass and the monolayer of mesenchymelike growth and by the twenty-fifth day had developed into anastomosing networks eventually ranging in length from 1.2 to 3.2 mm. Ciné and still phase photomicrographs decumented findings. Vascular networks developed in vitro in 85% of the total 80 Rose chambers examined over an average period of 58 days. Minute vessels, patent for only short distances, were lined with endothelial cells characterized by slender elongated nuclei and with two or three small nucleoli. In contrast, flanking fibroblasts were considerably larger with clear oval nuclei containing conspicuous nucleoli. Differential stains demonstrated reticular fibers and distinct bundles of collagen lying along the vessels, particularly in the area adjacent to the fragment. In the study of rheumatoid arthritis, where vascular lesions are known to occur, it is possible that such preparations may provide favorable test objects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1091470407
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