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  • 2000-2004  (1)
  • 1985-1989  (7)
  • 1880-1889
  • 2002  (1)
  • 1989  (4)
  • 1986  (3)
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  • 2000-2004  (1)
  • 1985-1989  (7)
  • 1880-1889
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  • 1
    Electronic Resource
    Electronic Resource
    Probing ensemble effects in surface reactions. 2. Benzene adsorption on clean and bismuth-covered platinum(111) (1989)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 93 (1989), S. 815-826 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100339a057
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Capillary chromatography: evaluation of volatiles from flue-cured tobacco varieties (1989)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 37 (1989), S. 1038-1045 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00088a049
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Adsorption and growth modes of Bi on Pt(111) (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 6176-6185 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The vapor deposition of Bi on Pt(111) at 110 and ∼600 K have been characterized by Auger electron spectroscopy (AES), thermal desorption mass spectroscopy (TDMS), low-energy electron diffraction (LEED), and changes in the work function (Δφ). At 110 K Bi growth follows a layer-by-layer mechanism. At ∼600 K Bi fills the first monolayer (θBi(approximately-equal-to)0.56) relatively uniformly, followed by 3D island growth. Bi desorption is characterized by a large, coverage-dependent desorption energy, Edes =(81−34.2 θBi ) kcal mol−1, in the first monolayer, and zero-order kinetics with constant activation energy (Edes =53–56 kcal mol−1) for the multilayer. Many LEED patterns are observed within the first monolayer for both cold and hot substrates. Structural models for these are proposed which are consistent with coverages obtained by AES. Annealed structures show continuous compression of hexagonal Bi overlayers with increasing coverage, subject to mild substrate constraints. At 110 K and θBi 〉0.33, uniaxial compression is instead seen, due to an unsurmounted energy barrier. Weakly repulsive lateral Bi–Bi interactions (due to dipole repulsions) dominate submonolayer growth. These results for the semimetal Bi are intermediate in behavior between alkali and transition metal overlayers on Pt(111). This is consistent with the relative strengths of the surface dipole of these adsorbed metals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451484
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Interactions between atmospheric CO2 concentration and phosphorus nutrition on the formation of proteoid roots in white lupin (Lupinus albus L.) (2002)
    Oxford, UK : Blackwell Science Ltd
    Plant, cell & environment 25 (2002), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Atmospheric [CO2] affects photosynthesis and therefore should affect the supply of carbon to roots. To evaluate interactions between carbon supply and nutrient acquisition, the [CO2] effects on root growth, proteoid root formation and phosphorus (P) uptake capacity were studied in white lupin (Lupinus albus L.) grown hydroponically at 200, 410 and 750 µmol mol−1 CO2, under sufficient (0·25 mm P) and deficient (0·69 µm P) phosphorus. Plant size increased with increasing [CO2] only at high P. Both P deficiency and increasing [CO2] increased the production of proteoid clusters; the increase in response to increased [CO2] was proportionally greater from low to ambient [CO2] than from ambient to high. The activity of phosphoenol pyruvate carboxylase in the proteoid root, the exudation of organic acids from the roots, and the specific uptake of P increased with P deficiency, but were unaffected by [CO2]. Increasing [CO2] from Pleistocene levels to those predicted for the next century increased plant size and allocation to proteoid roots, but did not change the specific P uptake capacity per unit root mass. Hence, rising [CO2] should promote nutrient uptake by allowing lupins to mine greater volumes of soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3040.2002.00883.x
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Structure of bis(μ-diethyllead)-bis(tetracarbonyliron) (1989)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 45 (1989), S. 1817-1818 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S010827018900733X
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  • 6
    Electronic Resource
    Electronic Resource
    Functional Characteristics of Wiener-Type Products Substituted with Native and Acid-Hydrolyzed Oat Protein Isolates (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 54 (1989), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Wiener-type products containing 5, 10 and 20% oat protein isolates (OPI), acid-hydrolyzed OPI or legume proteins were prepared and compared to an all-meat control. Cook yields progressively decreased with increases in the level of substitution, but there was no significant difference (p 〈 0.05) among samples containing the same amount of vegetable proteins. Wiener-type products containing acid-hydrolyzed OPI had significantly higher firmness and cohesiveness than those substituted with other vegetable proteins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1989.tb05132.x
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  • 7
    Electronic Resource
    Electronic Resource
    The effect of microstructure development on the collisional stress tensor in a granular flow (1986)
    Springer
    Acta mechanica 63 (1986), S. 61-72 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Many of the observed but yet unexplained phenomena associated with granular flow have been attributed to the development of a layered microstructure within the material. In particular the microstructure development has been called on to explain many of the experimental observations that cannot be accounted for in the presently available theoretical studies. While the attributions are based on sound physical arguments, the complexity of the processes involved has prohibited the inclusion of microstructure development in theoretical models. As a result no one has yet demonstrated how and to what extent the microstructure can account for the phenomena to which it has been ascribed. This paper addresses the effect of microstructure development for two dimensional flows by incorporating a heuristic model of the microstructure into a simple theoretical analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01182540
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  • 8
    Electronic Resource
    Electronic Resource
    Biogenic silica and phosphorus accumulation in sediments as indices of eutrophication in the Laurentian Great Lakes (1986)
    Springer
    Hydrobiologia 143 (1986), S. 79-86 
    Details
    ISSN: 1573-5117
    Keywords: paleolimnology ; diatoms ; nutrients ; phytoplankton production
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Biogenic silica (BSi), total phosphorus (TP), and biologically available phosphorus (AVP) were measured in short cores from Lake Michigan, Lake Erie, and Lake Ontario. Peaks in BSi concentration and peaks in BSi:TP or BSi:AVP ratios provided stratigraphic signals of water column silica (Si) depletion as a response of increased diatom production to P enrichment and decreased diatom production resulting from silica depletion. By contrast the stratigraphic record of P accumulation provided very weak signals of the historical nutrient enrichment in the water column. These results indicate that system P recycling has a higher rate constant than Si recycling and, as a consequence, that relatively small levels of P enrichment can increase diatom production and sedimentation eventually causing Si depletion and Si-limited diatom production in the water mass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00026648
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