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  • 1
    Monograph available for loan
    Monograph available for loan
    European precipitation chemistry atlas; Vol. 3 (1992)
    Lillestrøm
    Associated volumes
    Details Availability
    Call number: MOP Per 894(1992,6)
    In: European precipitation chemistry atlas
    In: EMEP CCC report
    Type of Medium: Monograph available for loan
    Pages: 322 S.
    Series Statement: European precipitation chemistry atlas 3
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Reseeding in the Falkland Islands: seed rate and fertilizers for establishment (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 49 (1994), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Five experiments were carried out to measure the effects of seed rate and fertilizers on the establishment and early growth of reseeded grass mixtures in the Falkland Islands.Experiments 1 and 2 compared seed rates within the range 7·5-35kg ha−1. Experiment 3 assessed the effects of three levels of each of nitrogen (N), P2O5, K2O and CaCO3 applied as seedbed fertilizers. Experiments 4 and 5 were similar in intent to Experiment 3, but treatments consisted of either nil or a very heavy application of the same fertilizer elements. In all experiments, the grass seed mixtures were sown in late summer after rotavation and burning of Cortaderia pilosa dominant indigenous vegetation on peaty soils. Percentage ground cover was estimated in the following spring and dry matter production through the first year was determined by sample harvests.Initially, heavier seed rates resulted in higher percentage ground cover of sown species, but dry matter production over the season following sowing showed a significant increase only between the 25 and 35 kg ha−1 rates in Experiment 2. The modest levels of seedbed fertilizers applied in Experiment 3 had no significant effect on either percentage ground cover of sown species or dry matter production. Even at the higher levels used in Experiments 4 and 5, only N consistently increased dry matter yields, although a significant positive response was also obtained from CaCO3 in the final harvests.The implications of the results to farmers in the Falkland Islands who may be contemplating reseeding are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1994.tb01977.x
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  • 3
    Electronic Resource
    Electronic Resource
    Leaf development in Lolium temulentum: Gradients of RNA complement and plastid and non-plastid transcripts (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 79 (1990), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Gradients of gene expression in the developing fourth leaf of the grass Lolium temulentum L. strain Ba 3081 were investigated using cell-free translation and Northern analysis of RNA extracted from succesive leaf segments. The transition from growth at the leaf base to photosynthesis in the blade was reflected in relative levels of transcripts from the plastid genome (psb A, pet A and rbc L, encoding plastid polypeptides) and nuclear genome (cab and PCR, encoding plastid polypeptides, and histone H3 and PAL encoding extra-plastidic polypeptides). These data combined with information on polypeptide synthesis in vivo indicate that post-transcriptional regulation plays an important part in controlling gene expression in this tissue.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1990.tb06750.x
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of Chromia on Grain Growth in Alumina (1992)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 94-96 (Jan. 1992), p. 797-802 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/21/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.94-96.797.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Polarized views (1990)
    [s.l.] : Nature Publishing Group
    Nature 348 (1990), S. 590-590 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Derek Fordham in his review of the Navigation Foundation's report Robert E. Peary at the North Pole (Nature 344, 902; 1990) asserts that it contains no new information, only new analysis. We did indeed report little new information but identified a need for competent analysis. For example, we ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/348590b0
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  • 6
    Electronic Resource
    Electronic Resource
    Wintertime asymmetry of upper tropospheric water between the Northern and Southern Hemispheres (1991)
    [s.l.] : Nature Publishing Group
    Nature 353 (1991), S. 244-247 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During the Airborne Antarctic Ozone Experiment (AAOE) and the Airborne Arctic Stratospheric Expedition (AASE), the NASA ER-2 and DC-8 aircraft obtained many profiles of water in the upper troposphere above Punta Arenas (53° S, 71° W) and Stavanger (59° N, 6° E) during August to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/353244a0
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  • 7
    Electronic Resource
    Electronic Resource
    The Murang'a landslide, Kenya (1993)
    Springer
    Environmental geology 21 (1993), S. 19-21 
    Details
    ISSN: 1432-0495
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract On 15 May 1991, a landslide occurred at Gacharage Village in the Murang'a District of Kenya; it buried a house near the toe of a cliff, killing all eight residents in their sleep. The principal determining factors of the slide were a high, mechanically unstable slope of deeply weathered volcanic soil and a high sorption capacity of the surface soil layer. The slide was triggered by rapid saturation of the soil following a heavy downpour. Based on field investigations and laboratory studies, this paper discusses the physical properties and environmental factors that affected slope stability at Murang'a. It also points out the economic and social impact of landslides in the region and suggests remedial measures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00775046
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  • 8
    Electronic Resource
    Electronic Resource
    Flash calcination of kaolinite studied by DSC, TG and MAS NMR (1992)
    Springer
    Journal of thermal analysis and calorimetry 38 (1992), S. 2053-2065 
    Details
    ISSN: 1572-8943
    Keywords: calcination ; high temperature reactions ; kaolinite ; kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Strukturelle Veränderungen bei der Dehydroxylierung von Kaolinit wurden durch die Anwendung einer Blitz-Kalzination untersucht, um kinetisch eingefrorene Kalzinationsprodukte zu erhalten. Der Prozentsatz der Dehydroxylierung wurde durch Veränderung der Verweilzeit im Ofen, durch Ofentemperatur und/oder Heizgeschwindigkeit modifiziert. Diese Kalzinationsbedingungen beeinflußten zwar die Reaktionskinetik, aber die Produkte hingen nur vom Ausmaß der Dehydroxylierung ab. Abweichungen bei Lage und Enthalpie der endothermen Umwandlung zu Metakaolinit und die exotherme Hochtemperaturreaktion von Metakaolinit wurden mittels DSC der Blitz-Kalzinationsprodukte verfolgt und in Beziehung zur Thermogravimetrie gebracht. 27Al Magic-Angle-Spinning NMR Spektren bei hohen magnetischen Feldstärken und Drehgeschwindigkeiten erlauben es, die Reaktion von Kaolinit zu verfolgen und liefern neue Informationen über die Natur der bei der Dehydroxylierung gebildeten Substanzen.
    Notes: Abstract The structural changes occurring during the dehydroxylation of kaolinite have been followed using flash calcination to produce kinetically frozen calcines. The percentage of dehydroxylation was varied by changing the furnace residence time or temperature and/or heating speed. These calcination conditions affected the reaction kinetics, but the products depended only on the extent of dehydroxylation. Changes in the position and enthalpy of the endothermic transformation to metakaolinite and the high temperature exothermic reaction of metakaolinite have been followed using Differential Scanning Calorimetry of the flash calcines and related to Thermogravimetry. 27Al magic-angle-spinning NMR spectra, at high magnetic fields and spin rates, enabled the reaction of kaolinite to be monitored and provides new information on the nature of the species formed in the course of dehydration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01979617
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  • 9
    Electronic Resource
    Electronic Resource
    Formation and analysis of stack cracks in a pipeline steel (1993)
    Springer
    Journal of materials science 28 (1993), S. 3322-3328 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Extensive cracking of the type known as stack cracking was demonstrated in a cathodically charged X65 microalloyed pipeline steel containing a weldment. It is shown that the formation and propagation of rolling-plane cracks, which constitute the primary stages of the stack cracking, is due to local concentration of hydrogen gas pressure and a lowering of the cohesive strength of a number of interfaces by hydrogen. The characteristic S-shape of individual cracks which occurred during the linking up of cracks was attributed to stress interactions at crack tips and cleavage cracking normal to the rolling plane. An explanation of hydrogen embrittlement fracture is given in terms of electronic state modifications of the steel, including charge polarization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00354254
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of the electronic state, stoichiometry and ordering energy on the ductility of transition metal-based intermetallics (1993)
    Springer
    Journal of materials science 28 (1993), S. 847-852 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The planar defects associated with deformation in ordered intermetallic compounds namely, the antiphase boundary, superlattice intrinsic stacking fault, and complex stacking fault are non-equilibrium structures corresponding to a state of disorder within the ordered structure of the lattice and therefore affect both the electronic energy states and the Brillouin zone structure. It is possible that a relationship exists between the antiphase boundary energy, γAPB, and the sum of the number of unfilled outermost d-state electrons in the transition metals on which this class of intermetallics is based. If this hypothesis is taken in conjunction with a set of rules for improving ductility in intermetallics proposed previously, a coherent explanation of recently observed ductilities in transition metal-based intermetallics would seem to be feasible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01151267
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