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  • Springer  (34)
  • American Physical Society  (3)
  • Copernicus
  • American Meteorological Society (AMS)
  • 1970-1974  (25)
  • 1965-1969  (12)
  • 1
    Electronic Resource
    Electronic Resource
    Ion association reactions with biological membranes, studied with the fluorescent dye 1-anilino-8-naphthalenesulfonate (1970)
    Springer
    The journal of membrane biology 3 (1970), S. 241-266 
    Details
    ISSN: 1432-1424
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary (1) When salts are added to buffered suspensions of membrane fragments containing the fluorochrome 1-anilino-8-naphthalenesulfonate (ANS), there is an increased fluorescence. This is caused by increased binding of the fluorochrome; the intrinsic fluorescence characteristics of the bound dye remain unaltered. These properties make ANS a sensitive and versatile indicator of ion association equilibria with membranes. (2) Alkali metal and alkylammonium cations bind to membranes in a unique manner. Cs+ binds most strongly to rat brain microsomal material, with the other alkali metals in the order Cs+〉Rb+〉K+〉Na+〉Li+. The reaction is endothermic and entropy driven. Monovalent cations are displaced by other monovalent cations. Divalent cations and some drugs (e. g., cocaine) displace monovalent cations more strongly. (3) Divalent cations bind to membranes (and to lecithin micelles) at four distinct sites, having apparent association constants between 50 and 0.2mm −1. The characteristics of the titration suggest that only one species of binding site is present at any one time, and open the possibility that structural transitions of the unassociated coordination sites may be induced by divalent cation binding. Divalent cation binding at the weakest site (like monovalent cation binding) is endothermic and entropy driven. At the next stronger site, the reaction is exothermic. Monovalent cations affect divalent cation binding by reducing the activity coefficient: they do not appear to displace divalent cations from their binding sites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01868018
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  • 2
    Electronic Resource
    Electronic Resource
    Evolutionary conservatism in arrangement of genetic material (1973)
    Springer
    Chromosoma 43 (1973), S. 211-224 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The diploid number of the Rhesus macaque, Macaca mulatta, is 42. All chromosomes are biarmed and all constitutive heterochromatins are centromeric. The diploid number of the African Green monkey, Cercopithecus aethiops, is 60. Again all chromosomes are biarmed, but seven pairs possess very short second arms which are heterochromatic. The heterochromatins of remaining chromosomes are centromeric. Using G-banding and deleting the heterochromatic short arms, the chromosomes of the African Green monkey can be artificially fused to reconstruct a karyotype of the Rhesus with only one pair of unmatched small metacentrics. In addition to the Robertsonian type of translocations, several sets of centromere-telomere translocations were found. The latter type of translocation reduced three arms into two. Thus the fundamental number can be changed by two mechanisms: growing extra heterochromatic arms and the centromere-telomere fusions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00483380
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  • 3
    Electronic Resource
    Electronic Resource
    A method for the isolation of nuclei from the dermatophytic fungus,Microsporum gypseum (1974)
    Springer
    Archives of microbiology 96 (1974), S. 281-289 
    Details
    ISSN: 1432-072X
    Keywords: Fungal Nuclei ; Isolation ; Purification ; Characterization ; Dermatophyte ; Microsporum gypseum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A method is reported for the isolation of nuclei from the dermatophytic fungus,Microsporum gypseum. The yield ranged from greater than 90% in crude preparations to less than 20% in highly purified preparations as judged by the recovery of DNA. Nuclei isolated in this manner appeared intact in electron microscopic observations and possessed chemical compositions, i.e. low protein/DNA and RNA/DNA ratios, which indicated a low degree of cytoplasmic contamination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00590184
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  • 4
    Electronic Resource
    Electronic Resource
    Influence of sex on the urinary bilirubin excretion at increased free plasma haemoglobin levels in whole dogs and in isolated normothermic perfused dog kidneys (1971)
    Springer
    Cellular and molecular life sciences 27 (1971), S. 1264-1265 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé Si le taux sanguin en hémoglobine libre dépasse les 50 mg/100 ml, l'excrétion rénale de la bilirubine est fortement augmentée chez le chien, tandis qu'elle reste faible chez la chienne. Les mêmes résultats sont obtenues par perfusion de reins isolés avec du sang hépariné ou défibriné.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02136676
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  • 5
    Electronic Resource
    Electronic Resource
    The urinary excretion of bilirubin after increased plasma hemoglobin concentration in dogs (1969)
    Springer
    Cellular and molecular life sciences 25 (1969), S. 814-815 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé L'excrétion rénale de la bilirubine dans l'urine varie entre 0,1 et 0,8 mg par jour dans une série de 113 chiens normaux. Avec une concentration d'hémoglobine plasmatique libre, excédant 50 mg/100 ml, les auteurs ont remarqué une augmentation sensible de l'excrétion urinaire de la bilirubine, sans que les taux sanguin, de la bilirubine ni le clearance de la créatinine soient changés. Les résultats font supposer un métabolisme local de l'hémoglobine en bilirubine dans les reins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01897893
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  • 6
    Electronic Resource
    Electronic Resource
    Purines and cortisone in lipid mobilization (1970)
    Springer
    Cellular and molecular life sciences 26 (1970), S. 128-129 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Purin-Basen, Kaffein und Cortison führen zu einer Vermehrung der Fettsäuren im Rattenserum. Adenin vermindert im Gegensatz zu den anderen Purinen die Lipolyse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01895532
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  • 7
    Electronic Resource
    Electronic Resource
    Degradation of haemoglobin-14C and urinary excretion of bilirubin-14C by the normothermic perfused isolated dog kidney (1973)
    Springer
    Cellular and molecular life sciences 29 (1973), S. 410-411 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé L'hémoglobine libre du sang, filtrée par les glomérules rénaux et partiellement absorbée par les tubules, est métabolisée par le tissu renal. A l'aide de l'hémoglobine marquée en14C, formée à partir de la glycine-2-14C et de la glycine-1-14C nos résultats prouvent que chez le chien mâle les reins métabolisent l'hémoglobine en bilirubine conjugée et excrètent cette dernière dans les urines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01926750
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  • 8
    Electronic Resource
    Electronic Resource
    Ladungszahl und Polymerisationsgrad des Metawolframations in wäßriger NaCl-haltiger Lösung nach Untersuchungen des Sedimentationsgleichgewichtes mit der Ultrazentrifuge (1971)
    Springer
    Colloid & polymer science 249 (1971), S. 1148-1154 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary The chargez of the meta-tungstate ion in the ternary system Na6[H2W12O40]-NaCl-H2O is determined by ultracentrifugation experiments, evaluating the experimental data: 1. according to the limiting value ofLamm by eytrapolating the apparent molecular weight to zero-concentration, 2. according to the procedure ofJohnson, Kraus andScatchard. The discrepancy of the results ¦z¦=6 versus ¦z¦=2,85 is resolved by giving the proof that the latter value has no physical significance. For the molecular weight the first method gives the exact value, the second furnishes a very satisfying approximation.
    Notes: Zusammenfassung Die Ladungszahlz des Metawolframations in dem ternären System Na6[H2W12O40]-NaCl-H2O wird nach zwei verschiedenen Verfahren durch Untersuchung des Sedimentations—Diffusionsgieichgewichtes mit der Ultrazentrifuge bestimmt: 1. Mit Hilfe der Lammschen Grenzbeziehung durch Extrapolation der scheinbaren Molmasse auf die Konzentration Null und 2. nach der Methode vonJohnson, Kraus undScatchard. Die Ergebnisse sind ¦z¦=6 bzw. ¦z¦=2,85. Es wird gezeigt, daß dem nach dem Verfahren vonJohnson, Kraus undScatchard erhaltenen Wert ¦z¦=2,85 keine physikalische Realitat zukommt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01556986
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  • 9
    Electronic Resource
    Electronic Resource
    Eupenicillium osmophilum sp. nov. (1974)
    Springer
    Antonie van Leeuwenhoek 40 (1974), S. 1-5 
    Details
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A new species of the genus Eupenicillium: E. osmophilum is described and illustrated. It is characterized by single asci, lenticular ascospores with 2 closely appressed equatorial ridges and divaricate penicilli.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00394547
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  • 10
    Electronic Resource
    Electronic Resource
    On the coupling of the giant multipole resonances to the surface quadrupole oscillations of nuclei (1968)
    Springer
    The European physical journal 212 (1968), S. 83-103 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Within the framework of the hydrodynamic model the exact coupling constants of the coupling of the giant multipole resonances to the surface quadrupole oscillations of nuclei are derived. The differences to former variational calculations are discussed. It is found that the coupling constants for the terms linear in the surface variables are almost the same whereas the coupling constants for the quadratic terms differ appreciably. The influence on the photon absorption and scattering cross sections of spherical nuclei is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01379899
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