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  • 2000-2004
  • 1990-1994  (9)
  • 1994  (4)
  • 1991  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Coadsorption of cyclic hydrocarbons and cesium on platinum(111): electronic and ensemble effects (1991)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 95 (1991), S. 6632-6642 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100170a047
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Identification of Adsorbed Benzyl on Pt(111) Using D2-BTPDS (1994)
    s.l. : American Chemical Society
    Langmuir 10 (1994), S. 2636-2639 
    Details
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/la00020a023
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Response of Phorodon humuli to yellow and to green hop foliar colours (1991)
    Springer
    Entomologia experimentalis et applicata 60 (1991), S. 95-99 
    Details
    ISSN: 1570-7458
    Keywords: Aphididae ; Phorodon humuli ; host selection ; foliar colour
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00164963
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Pseudomicrodochium fusarioides sp. nov., isolated from human bronchial fluid (1991)
    Springer
    Mycopathologia 114 (1991), S. 159-161 
    Details
    ISSN: 1573-0832
    Keywords: Pseudomicrodochium ; phaeohyphomycosis ; lung isolate ; new species
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A fungus from bronchial lavage fluid from a patient with pulmonary infiltration was isolated in pure culture and identified as a species of Pseudomicrodochium. It is compared and contrasted with other species of the genus, in particular P. suttonii, and formally described as P. fusarioides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00437207
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    C2 rotation and spinous process deviation in migraine: cause or effect or coincidence? (1991)
    Springer
    Neuroradiology 33 (1991), S. 475-477 
    Details
    ISSN: 1432-1920
    Keywords: Migraine ; Computed tomography ; Cervical spine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Previous reports have shown an association between the side of C2 spinous process deviation or asymmetrical prominence, or vertebral rotation, and the side of the headache in unilateral migraine. However, this study has found that such C2 appearances were present as frequently in the controls as in the migraine patients, and that there was no association between the side of the anomaly and the lateralisation of the headache. The results were comparable for the different sub-groups of migraine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588037
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Impulse strengths in rapid granular shear flows (1994)
    Springer
    Acta mechanica 104 (1994), S. 65-90 
    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 This paper describes measurements of the impulses that particles experience while undergoing rapid shear. These were performed with an eye towards understanding the processes that lead to particle attrition and fracture. The measurements were taken from a discrete particle computer simulation of a simple shear flow of spheres. Special attention is paid to the strongest impulses as these will do the most damage. The results indicate that the largest impulses arise, not from the mean shear flow, but from the random particle velocities that are characterized by the so-called “granular temperature”. Measurements of the largest impulses are presented as functions of particle properties and solid concentration. Histograms of the impulse strengths illustrate the effect of concentration and particle surface friction. Finally, geometric distributions are presented that illustrate the shear induced anisotropy in the impulse strengths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01170277
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Distribution of soil invertase in relation to the root systems ofPicea sitchensis (Bong.) Carr. andAcer pseudoplatanus L. during development of young plants (1994)
    Springer
    Plant and soil 167 (1994), S. 73-77 
    Details
    ISSN: 1573-5036
    Keywords: Acer ; invertase ; Picea ; rhizosphere ; roots ; statistics ; trees
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A method is described for sampling rhizosphere soil under newly establishedPicea sitchensis andAcer pseudoplatanus. The technique involves taking soil samples to a depth of 150 mm at 100 mm intervals along transects, each 45° from its neighbour, radiating from the base of the stem. Invertase activities were measured in the soil samples and compared to their activities in fallow and rhizosphere soils. When the field soil was dry, the tree root systems were carefully excavated to retain as many fine roots as possible. The distribution of the soil invertase was matched to the spatial distribution of the roots showing the precise position of the rhizosphere relative to the initial ‘blind’ soil sampling. Statistics were applied to derive equations for calculating the percentage enzyme activity relative to that found in rhizosphere soil at various locations radiating from the base of the stem. This information was subsequently applied to soil sampled under trees of the same age as those excavated to give a non-destructive method for sampling rhizosphere soil routinely from under a large number of trees.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01587601
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Manual recording of minirhizotron data and its application to study the effect of herbicide and nitrogen fertiliser on tree and pasture root growth in a silvopastoral system (1994)
    Springer
    Agroforestry systems 26 (1994), S. 75-87 
    Details
    ISSN: 1572-9680
    Keywords: borescope ; competition ; herbicide ; minirhizotron ; pasture ; Prunus avium ; silvopastoral
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The use of a simple counting method using a borescope and minirhizotron system to study the interaction of roots of wild cherry trees (Prunus avium L) and pasture in an upland silvopastoral system is described. Operator variation was greatest when distinguishing different tree root categories (e.g. white, brown, woody) but was not significant in relation to total tree or grass root counts or species differences. Analysis of covariance was used to take these differences into account in a field trial using several operators. The seasonal patterns of tree and pasture root growth were different. Tree roots peaked in May before maximal shoot growth. The peak in pasture roots occurred two weeks earlier. Tree height growth was increased by the use of herbicides to control grass growth but this effect was only apparent during August when the soil was dry and when pasture root counts were reduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00707007
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Molecular recognition using surface-enhanced Raman scattering from citrate-reduced silver colloids in non-aqueous solvents (1991)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 22 (1991), S. 771-775 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Surface-enhanced Raman scattering (SERS) from citrate-coated colloidal particles suspended in organic solvents is used to study surface reactions in an organic phase. Stable colloids which gave good SERS were produced from ethanol and acetonitrile. SERS was easily discriminated from the bulk solvent Raman scattering. Compounds which are sparingly soluble in water including 2,2′-bipyridine and benzene-1,2,4,5-tetracarboxylic acid dianhydride produced good SERS in ethanol. In the latter case, no SERS was observed from an aqueous colloid. Therefore, some form of solvent-dependent molecular recognition may operate. The formation of a bipyridine complex with copper(II) at the surface in a solvent system in which the ligand and complex are both soluble was observed. The solvent altered surface reactions. In the ethanol colloid, in contrast to the result in aqueous colloid, pyridine does not replace citrate readily. This work demonstrates the potential for the expansion of the use of colloidal SERS into the field of surface reactions in contact with an organic phase and is related to metal liquid-like films.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250221208
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