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  • Springer  (233)
  • 1985-1989  (202)
  • 1970-1974  (31)
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  • 1
    Electronic Resource
    Electronic Resource
    Thermal studies on metal complexes of 5-nitrosopyrimidine derivatives (1986)
    Springer
    Journal of thermal analysis and calorimetry 31 (1986), S. 573-580 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die folgenden Komplexe von Zn(II), Cd(II), Hg(II) und Hg(I) mit 4-Amino-1,6-dihydro-2-methylthio-5-nitroso-6-oxopyrimidin (MTH) wurden dargestellt und hinsichtlich ihres thermischen Verhaltens durch TG und DSC untersucht: Zn(MT)2 · 3H2O, Cd(MT)·H2O, Cd(MTH)Cl2, Hg(MTH)Cl2 und Hg2(MTH)(NO3). Die Werte der Enthalpie der Dehydratisierung und Dehalogenisierung wurden berechnet.
    Abstract: Резюме Получены комплексы с остава Zn(MT)2·ЗН2О, Cd(MT)2·H2O, Cd(MTH)Cl2, Hg(MTH)Cl2 и Hg2(MT)NO3, где МТН — 4-амино-1,6-дигидро-2-метил тио-5-нитрозо-6-оксопири мидин. Термическое поведен ие комплексов изучено методами ТГ и ДСК. Вычислены энтальпии реакций де гидратации и дегалог енирования.
    Notes: Abstract The following Zn(II), Cd(II), Hg(II) and Hg(I) complexes of 4-amino-1,6-dihydro-2-methylthio-5-nitroso-6-oxopyrimidine (MTH) have been prepared and their thermal behaviour studied by TG and DSC techniques: Zn(MT)2·3H2O, Cd(MT)·H2O. Cd(MTH)Cl2, Hg(MTH)Cl2 and Hg2(MT)(NO3). The dehydration and dehalogenation enthalpy values were calculated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01914234
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  • 2
    Electronic Resource
    Electronic Resource
    Rh(III), Pd(II), Pt(IV) and Au(III) complexes of 2-thiopyrimidine derivatives (1987)
    Springer
    Monatshefte für Chemie 118 (1987), S. 883-891 
    Details
    ISSN: 1434-4475
    Keywords: Complexes ; Thermal analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden einige neue Thiopyrimidinderivate und deren Komplexe synthetisiert und mittels Elementaranalyse, IR und1H-NMR charakterisiert: 4-Amino-5-nitroso-6-oxo-1,2,3,6-tetrahydro-2-thio-pyrimidin (TANH), dessen 2-Methylthio-Derivat (MTH), das Ammoniumsalz vonTANH (sTANH) und sechs neue Komplexe der Formeln Rh(MT)2Cl · 2H2O, Pd(MTH)2Cl2, Pt(MTH)2Cl4, Au(MTH)Cl3, Pd(TANH)2Cl2 und Au(TAN −)Cl. Das thermische Verhalten der Verbindungen wurde ebenfalls untersucht.
    Notes: Abstract Some news thiopyrimidine derivatives and complexes [4-amino-5-nitroso-6-oxo-1,2,3,6-tetrahydro-2-thio-pyrimidine (TANH), its 2-methylthio derivative (MTH), the ammonium salt ofTANH (sTANH) and six new complexes of formulas: Rh(MT)2Cl · 2H2O, Pd(MTH)2Cl2, Pt(MTH)2Cl4, Au(MTH)Cl3 Pd(TANH)2Cl2 and Au(TAN −)Cl] have been synthesized and characterized by elemental analysis, IR and1H-NMR spectroscopy techniques. The thermal behaviour of all compounds has also been studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00815316
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  • 3
    Electronic Resource
    Electronic Resource
    Superoxide dismutase in strains of the genus Flavobacterium: isolation and characterization (1989)
    Springer
    Archives of microbiology 152 (1989), S. 407-410 
    Details
    ISSN: 1432-072X
    Keywords: Superoxide dismutase ; Flavobacterium genus ; Flavobacterium halmephilum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two electrophoretically different forms of superoxide dismutase, one of them containing manganese-protein and the other iron-protein, were detected in eleven different strains of the genus Flavobacterium. The activities of the different strains were similar to those described for other bacteria. The two molecular forms of the enzyme differed clearly with regard to activity, electrophoretic behaviour, sensitivity to cyanide and peroxide, and NaCl requirement. Both molecular forms were isolated from Flavobacterium halmephilum. Molecular mass absorption spectra, metal content, optimum pH, heat-sensitivity and stability were described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00425182
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  • 4
    Electronic Resource
    Electronic Resource
    Thermoanalytical studies on montmorillonite-pirimicarb complexes (1989)
    Springer
    Journal of thermal analysis and calorimetry 35 (1989), S. 1679-1686 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Mittels TG und DSC Techniken wurde die thermische Zersetzung der Zwischenschichtkomplexe von homoionischen Proben von Montmorillonit mit dem Karbamatinsektizid Pirimicarb (2-Dimethylamino-5,6-dimethylpyrimidin-4-yl-dimethylkarbamat) untersucht. Die Zersetzung der organischen Verbindung wurde mittels IR-Spektroskopie und Röntgendiffraktion verfolgt. Es wurde beobachtet, daß die thermische Zersetzung von Pirimicarb durch Adsorption an dem Ton katalysiert wird. Sowohl die Katalysatorkapazität des Tones als auch die Werte für die Zersetzungsenthalpie hängen von der Art der Zwischenschichtkationen des Montmorillonites ab.
    Abstract: Резюме Методом ТГ и ДСК изуче но термическое разложение прослоис тых комплексов гомоионных образцов монтмориллонита с карбаматпроизводны м инсектицидом пирим икарб (2-диметиламино-5,6-димет илпиримидин-4-ил-димет илкарбамат). Исследов ание прод uктов разложения было пров едено с помощью ИК спе ктроскопии и рентгенофазового а нализа. Найдено, что термичес кое разложение пирим икарба катализируется адсо рбцией его этим минералом. Каталитич еская способность ми нерала и значения энтальпий р азложения зависят от характеристик межсл оевого катиона монтм ориллонита.
    Notes: Abstract The thermal decomposition of the interlayer complexes of homoionic samples of montmorillonite with the carbamate insecticide pirimicarb (2-dimethylamino-5, 6-dimethyl pyrimidin 4-yl-dimethyl carbamate) was studied using TG and DSC techniques. The decomposition of the organic compound was followed by IR spectroscopy and X-ray diffraction. It was observed that the thermal decomposition of pirimicarb is catalyzed by adsorption by the clay. Both the catalytic capacity of the clay and the values of the decomposition enthalpies depend on the characteristics of the interlayer cation of the montmorillonite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01912942
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  • 5
    Electronic Resource
    Electronic Resource
    Thermal studies on metal complexes of 5-Nitrosopyrimidine derivatives (1986)
    Springer
    Journal of thermal analysis and calorimetry 31 (1986), S. 361-367 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Neue 4-Amino-5-nitroso-6-oxo-1,2,3,6-tetrahydro-2-thiopyrimidin-Komplexe (TANH) von Zn(II), Cd(II), Hg(II) und Hg(I) wurden dargestellt und ihr thermisches Verhalten mittels TG und DSC untersucht. Die Dehydratisierungs- und Deamminierungsenthalpien der Komplexe wurden berechnet.
    Abstract: Резюме С помощью методов ТГ и ДСК изучено термичес кое поведение новых комп лексов 4-амино-5-нитрозо-6-оксо-1,2,3,6-тетрагидро-2-ти опиримидина с цинком, кадмием, однов алентной и двухвалентной ртут ью. Вычислены энтальп ии реакций дегидратаци и и деамминирования.
    Notes: Abstract New 4-amino-5-nitroso-6-oxo-1,2,3,6-tetrahyaro-2-thiopyrimidine (TANH) complexes of Zn(II), Cd(II), Hg(II) and Hg(I) were prepared and their thermal behaviour was studied by TG and DSC techniques. The dehydration and deamination enthalpies of the corresponding complexes were calculated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01911068
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  • 6
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    Unknown
    Superoxide dismutase in strains of the genus Flavobacterium: isolation and characterization (1989)
    Springer
    Details
    Publication Date: 1989-09-01
    Print ISSN: 0302-8933
    Electronic ISSN: 1432-072X
    Topics: Biology
    Published by Springer
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    PAPER CURRENT
  • 7
    Electronic Resource
    Electronic Resource
    Systemic induction of proteinase-inhibitor-II gene expression in potato plants by wounding (1988)
    Springer
    Planta 174 (1988), S. 84-89 
    Details
    ISSN: 1432-2048
    Keywords: Gene expression (systemic induction) ; Proteinase inhibitor II ; RNA (proteinase inhibitor II) ; Solanum (gene expression) ; Wounding (gene expression)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The systemic induction of expression of the gene for proteinase inhibitor II after wounding different parts of potato (Solanum tuberosum L.) plants was analysed at the RNA level. Wounding of either leaves or tubers led to an induction of expression of this gene in non-wounded upper and lower leaves as well as in the upper stem segment, whereas no expression was observed in nonwounded roots or in the lower stem segment. The signal mediating the systemic induction in nonwounded tissue must therefore be able to move both acropetally and basipetally. The systemic wound response is specific for the expression of the proteinase-inhibitor-II gene as no influence was observed for the expression of genes encoding the small subunit of ribulose-1,5-bisphosphate carboxylase and the tuber storage protein patatin which were examined in parallel with the proteinase-inhibitor-II gene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00394877
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  • 8
    Electronic Resource
    Electronic Resource
    Studies of isozymes in oat species (1989)
    Springer
    Theoretical and applied genetics 77 (1989), S. 735-741 
    Details
    ISSN: 1432-2242
    Keywords: Avena ; Isozyme patterns ; Phylogenetic relationships
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Starch and polyacrylamide gel electrophoresis of seven isozyme systems was investigated as a means of identifying wild and cultivated species of Avena with different ploidy levels. By examining the characteristic isoenzymatic patterns, it was shown that there was considerable variability within the different species. However, it was nevertheless possible to unequivocally identify the species of wild oats and to distinguish between the different species belonging to the same genomic set, thus providing a definitive reference technique for the identification of Avena species in seed-testing laboratories. The relationships between Avena species were inferred from the electrophoresis data. The divergence of the A. maroccana — A. murphyi complex and its contribution to the AACC genomes are emphasized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00261252
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  • 9
    Electronic Resource
    Electronic Resource
    Studies in prebiotic synthesis. VII (1972)
    Springer
    Journal of molecular evolution 1 (1972), S. 249-257 
    Details
    ISSN: 1432-1432
    Keywords: Prebiotic ; Nucleosides ; Dry-phase ; Seawater
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The purine nucleosides (adenosine, guanosine, inosine, xanthosine) are formed when the corresponding purine bases and D-ribose are heated together in the presence of certain salts and minerals. The salts remaining after the evaporation of seawater are particularly effective in these syntheses. The relevance of these reactions for prebiological evolution is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01660244
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  • 10
    Electronic Resource
    Electronic Resource
    Base composition of ribosomal RNA and evolution (1972)
    Springer
    Journal of molecular evolution 2 (1972), S. 44-55 
    Details
    ISSN: 1432-1432
    Keywords: rRNA-Base Composition ; Evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Base composition analysis has been carried out for the two major ribosomal RNA components extracted from ribosomes of plants and animals of various taxonomic position. The high degree of change undergone by these molecules during evolution is evident from the results obtained. Moreover, the evolutionary pattern of therRNA base composition well reflects the phylogenetic relationships of the various taxonomic groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01653942
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