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  • 1
    Digitale Medien
    Digitale Medien
    Purines and cortisone in lipid mobilization (1970)
    Springer
    Cellular and molecular life sciences 26 (1970), S. 128-129 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Zusammenfassung Purin-Basen, Kaffein und Cortison führen zu einer Vermehrung der Fettsäuren im Rattenserum. Adenin vermindert im Gegensatz zu den anderen Purinen die Lipolyse.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01895532
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    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
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01868018
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): Fungal Nuclei ; Isolation ; Purification ; Characterization ; Dermatophyte ; Microsporum gypseum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00590184
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    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
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Beschreibung / Inhaltsverzeichnis: 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.
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01556986
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  • 5
    Digitale Medien
    Digitale Medien
    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
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02136676
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    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
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01926750
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Evolutionary conservatism in arrangement of genetic material (1973)
    Springer
    Chromosoma 43 (1973), S. 211-224 
    Details
    ISSN: 1432-0886
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00483380
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Photoproton spectrum from carbon with good energy resolution (1974)
    Springer
    The European physical journal 270 (1974), S. 93-95 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The 90° photoproton spectrum from12C has been measured with good energy resolution using bremsstrahlung with maximum energyEγ=31 MeV. A fragmentation of the giant dipole resonance in fine structures with a typical width of 150 to 300 keV is observed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01677439
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    Lifetime-measurements of alkali-molecules excited by different laserlines (1970)
    Springer
    The European physical journal 232 (1970), S. 462-472 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Absorbing different lines of acw-argon ion laser or a He-Ne-laser the alkali molecules Na2, K2, Rb2 and Cs2 can be pumped into different rotational-vibrational levels of an excited electronic state. The lifetimes of these states have been measured using the phase shift technique at a modulation frequency of 18 Mc/sec. Because of collisions with the always present alkali atoms the excited molecules may undergo collision-induced transitions to other states and their lifetimes are dependent on the atomic pressure. This dependence was measured and the spontaneous lifetimes were obtained by extrapolation against zero pressure. Different collision processes are discussed which compete with the unperturbed fluorescence.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01395677
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    Eupenicillium osmophilum sp. nov. (1974)
    Springer
    Antonie van Leeuwenhoek 40 (1974), S. 1-5 
    Details
    ISSN: 1572-9699
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00394547
    Standort Signatur Erwartet Verfügbarkeit
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