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  • 1
    Electronic Resource
    Electronic Resource
    Juvenility and resistance of a superoxide tolerant plant to diseases and other stresses (1993)
    Springer
    Naturwissenschaften 80 (1993), S. 420-422 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01168338
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  • 2
    Electronic Resource
    Electronic Resource
    Infektionsbedingte Änderung der Glutaminsäuredecarboxylase-Aktivität beim rostbefallenen Weizen (1957)
    Springer
    Naturwissenschaften 44 (1957), S. 353-353 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00630696
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  • 3
    Electronic Resource
    Electronic Resource
    Über die parasitogen induzierte Atmungssteigerung beim Weizen (1955)
    Springer
    Naturwissenschaften 42 (1955), S. 213-214 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00599224
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  • 4
    Electronic Resource
    Electronic Resource
    Lichtinduzierte Änderung der Malonat-Sensitivität der Zellatmung beim Weizen (1957)
    Springer
    Naturwissenschaften 44 (1957), S. 65-66 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00629201
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  • 5
    Electronic Resource
    Electronic Resource
    Interpretation of adsorption excess quantities: the absolute surface excess concentration (1990)
    Springer
    Colloid & polymer science 268 (1990), S. 687-690 
    Details
    ISSN: 1435-1536
    Keywords: Adsorptionexcessquantities ; Gibbsdividingsurface ; solid-liquidinterface
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The concept of absolute surface excess of adsorption accounts for the expansion of compression of the volume of a pure liquid under the influence of a solid surface. The absolute surface excess amount of substance can prove to be a powerful measure of the adsorption at a solid/binary liquid interface, too. The contributions of the composition and volumetric effects to the adsorption can be separated from each other in this concept, and both of them are experimentally accessible quantities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01410412
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  • 6
    Electronic Resource
    Electronic Resource
    Adsorption of 1-butanol from water on modified silicate surfaces (1994)
    Springer
    Colloid & polymer science 272 (1994), S. 1129-1135 
    Details
    ISSN: 1435-1536
    Keywords: Adsorption from solution ; alkylammonium ions ; clay minerals ; enthalpy of displacement ; solid/liquid interface ; surface modification ; vermiculite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The structure and the sorption properties of partially hydrophobized silicates (dodecylammonium and dodecyldiammonium vermiculites) have been investigated in aqueous solutions of 1-butanol. The alcohol is preferentially adsorbed on the surface. The interlayer composition is calculated from adsorption and x-ray diffraction data. In air-dried state the organic cations lie flat on the interlamellar surface. In aqueous butanol solutions, the basal spacing of dodecylammonium vermiculite gradually increases with the extent of butanol adsorption because the chains increasingly point away from the surface. The basal spacing of dodecyldiammonium vermiculite is virtually independent on the interlayer composition because the expansion of the interlayer space is sterically restricted and a relatively rigid structure is formed. The enthalpy of the displacement of water by 1-butanol has been determined by flow sorption microcalorimetry. The displacement process is endothermic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00652382
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  • 7
    Electronic Resource
    Electronic Resource
    Van der Waals attraction between Stöber silica particles in a binary solvent system (1996)
    Springer
    Colloid & polymer science 274 (1996), S. 779-787 
    Details
    ISSN: 1435-1536
    Keywords: Silica particles ; colloid stability ; Hamaker constant ; van der Waals potential ; adsorption ; rheology ; SAXS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Hydrophilic Stöber silica particles are stable in ethanol, but flocculation may be induced by the addition of sufficient cyclohexane. Low-shear rheological measurements indicated non-Newtonian behaviour beyond the critical cyclohexane concentration. The thickness and composition of the solvation layer around the particles were calculated from the adsorption excess isotherm on the basis of a multilayer adsorption model. The composition dependences of the Hamaker constants of the dispersion medium and the adsorption layer were obtained from optical dispersion measurements. A single-sheet, hard-sphere model predicted a weak van der Waals attraction in the ethanolic regime, but a strong attraction in the cyclohexane-rich region, in good accordance with the rheological properties of the dispersions and visual observations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00654674
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  • 8
    Electronic Resource
    Electronic Resource
    The level of trigonelline and other quaternary ammonium compounds in tomato leaves in ratio to the changing nitrogen supply (1988)
    Springer
    Plant and soil 109 (1988), S. 285-287 
    Details
    ISSN: 1573-5036
    Keywords: choline ; Fusarium oxysporum ; Lycopersicon esculentum ; nitrogen supply ; OPLC ; Solanaceae ; tomato ; trigonelline ; Nε-trimethyl-L-lysine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The choline, trigonelline, Nε-trimethyl-L-lysine content in the leaf tissue of tomato plants grown with varying amounts of nitrate nitrogen was determined by the OPLC method. The choline and trigonelline level in tomato leaves increased in direct ratio to the nitrogen supply. The possible role of these compounds in the physiology and in the augmented resistance of plants to nectrotizing stresses is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02202097
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  • 9
    Electronic Resource
    Electronic Resource
    Algebraic and geometric interpretations of adsorption excess quantities (1988)
    Springer
    Colloid & polymer science 266 (1988), S. 663-671 
    Details
    ISSN: 1435-1536
    Keywords: Solid liquid interface ; adsorption excess quantities ; algebraic method ; geometric method ; Gibbs dividing surface
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The algebraic methods of Hansen and Goodrich and the geometric methods of Motomura, Good and Everett were applied to define and investigate adsorption excess quantities at a solid/binary liquid interface. Both single-plane and two-plane geometric constructions were found to be consistent with the algebraic method. Relations between the relative, molar reduced and volumetric reduced areal excess concentrations and the amounts of components actually present in the interfacial layer are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411508
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  • 10
    Electronic Resource
    Electronic Resource
    Structure-retention relationships in the gas chromatography of N,N-dialkylhydrazones (1996)
    Springer
    Chromatographia 42 (1996), S. 653-659 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Dialkylhydrazones ; Kováts retention indices ; Structure-retention relationships
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary N,N-Dialkylhydrazones [DAHs; R1R2C=1N-2N(R3)2] were prepared and their Kováts retention indices determined on 100% dimethylpolysiloxane (HP-1) and 5% diphenyl and 95% dimethylpolysiloxane (HP-5) stationary phases. The physico-chemical and retention behaviour of the DAHs depend greatly on whether R2=H or an alkyl group. A similar difference is observed in the alkane and oxo homomorphic factors of DAHs formed from aldehydes or ketones. The difference is explained on the basis of NMR and quantum-chemical results by intramolecular interactions between R2 and the lone pair of the2N atom. A single linear equation is suitable for prediction of retention indices if parameters are introduced representing resonance structure (bond angle and electron density) besidesI oxo or the van der Waals' surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02267697
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