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  • Springer  (543)
  • Emerald  (30)
  • PANGAEA
  • 2000-2004  (371)
  • 1985-1989  (202)
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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
    Bioconversion of lutein to products with aroma (2000)
    Springer
    Applied microbiology and biotechnology 54 (2000), S. 528-534 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A residual mud sample from the marigold flower dehydration process was screened and 19 putative colonies were isolated for their ability to degrade lutein in a chemically defined medium supplemented with marigold flower flour as a carbon source. Among the colonies isolated, two generated volatile compounds in fermentation and one was chosen for further study for its ability to produce a strong tobacco smell. This colony contained two microorganisms, identified as Geotrichum sp. and Bacillus sp. The aroma production requires the presence of both microorganisms and lutein. Using gas chromatography coupled to mass spectrometry (GC/MS), four compounds were identified: 7,8-dihydro- β-ionol, β-ionone, 7,8-dihydro-β-ionone, and 3-hydroxy-β-ionone, in proportions of 84.2%, 9.4%, 3.5%, and 2.9%, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530000421
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  • 4
    Electronic Resource
    Electronic Resource
    Cadmium and Lead Contents in Suburban and Urban Soils from Two Medium-Sized Cities of Spain: Influence of Traffic Intensity (2000)
    Springer
    Bulletin of environmental contamination and toxicology 64 (2000), S. 250-257 
    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/s001289910037
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  • 5
    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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  • 6
    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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  • 7
    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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  • 8
    Electronic Resource
    Electronic Resource
    Suitability of Ten Plant Baits for the Rapid Detection of Pathogenic Pythium Species in Hydroponic Crops (2000)
    Springer
    European journal of plant pathology 106 (2000), S. 209-214 
    Details
    ISSN: 1573-8469
    Keywords: irrigation water ; soilless cultivation ; P. aphanidermatum/ ; P. irregulare ; Pythium ‘group F’
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Ten types of plant baits were tested in the laboratory to assess their capacity to detect pathogenic Pythium species. These were orange tree leaves, tomato leaves, pepper leaves, geranium leaves, Bermuda grass leaves, pine needles, immature carnation petals, hemp-seed cotyledons, pepper and cucumber fruits. The Pythium spp. tested were P. aphanidermatum, P. irregulare and Pythium ‘group F’ from hydroponic market garden crops in the Poniente region of Almería (south-east Spain). The test consisted of observing the velocity at which five baits were colonized and the day of colonization of the first bait. Results indicated that the slowest baits to be infected were immature carnation petals and pine needles. These two, together with Bermuda grass leaves, were also the baits infected in lowest number, such that practically no further infection was produced in the baits after the fifth day of contact with the inoculated water. The other plant baits tested were equally suitable for detection of Pythium spp. over the first two days, although only orange leaves and hemp-seed cotyledons were infected on the first day.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008773908813
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  • 9
    Electronic Resource
    Electronic Resource
    Influence of hydrogen distribution on magnetic properties of amorphous samples (2000)
    Springer
    The European physical journal 14 (2000), S. 473-476 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 75.80.+q Magnetomechanical and magnetoelectric effects, magnetostriction - 75.60.-d Domain effects, magnetization curves, and hysteresis - 66.30.-h Diffusion in solids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We have studied the effect of the homogeneity of hydrogen distribution on magnetic properties of hydrogen charged amorphous samples (Metglass 2826MB: Fe40Ni40Mo4B18). The results suggest that, in high magnetostrictive samples, the induced internal stresses and hence the magnetic anisotropy are related to the hydrogen distribution and not to the total quantity of hydrogen inside the sample. To perform this study, the homogeneity of hydrogen distribution in the sample was improved by using a very low rate of hydrogen charging by means of a pulsed electrolytic current. Furthermore, this pulsed electrolytic current allows us to introduce a high quantity of hydrogen without breaking the sample.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510051055
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  • 10
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    Production of tobacco aroma from lutein. Specific role of the microorganisms involved in the process (2003)
    Springer
    Details
    Publication Date: 2003-10-01
    Print ISSN: 0175-7598
    Electronic ISSN: 1432-0614
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Published by Springer
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