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  • 11
    Electronic Resource
    Electronic Resource
    Bimetallic Surface Chemistry (1990)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physical Chemistry 41 (1990), S. 775-837 
    Details
    ISSN: 0066-426X
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.pc.41.100190.004015
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  • 12
    Electronic Resource
    Electronic Resource
    Structures of three 1-[(diphenylphosphinoyl)methyl]cyclohexanols (1992)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 48 (1992), S. 690-693 
    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/S0108270191010430
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  • 13
    Electronic Resource
    Electronic Resource
    The thermal polymerisation of a diacetylenic liquid crystal (1992)
    Springer
    Polymer bulletin 29 (1992), S. 661-668 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary In this paper, the polymerisation of a conjugated liquid crystalline diacetylene is reported. The structure of the polymer is discussed in relation to results from spectroscopic studies and molecular weight determinations. The polymer has a backbone structure analogous to that of other polydiacetylenes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01041152
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  • 14
    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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  • 15
    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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  • 16
    Electronic Resource
    Electronic Resource
    Thermal and optical studies on some monomer and polymer diacetylenes (1990)
    Springer
    Journal of thermal analysis and calorimetry 36 (1990), S. 1669-1674 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es werden thermische und optische Studien einiger Diacethylene beschrieben, die zwecks der Senkung der Temperatur für das Auftreten von Mesophasen eigens gestaltet wurden. Ursprüngliche Untersuchungen an symmetrischen Molekülen wurden erweitert, um auch typische Flüssigkeitskristallmoleküle mit Diacethylenen mit Polymerhauptketten und unsymmetrisch substituierte Diacethylene wie Schiff-Basen mit langen Alkylketten einzubeziehen.
    Notes: Abstract We describe the thermal and optical studies of some diacetylene molecules which were specially designed in an attempt to reduce the temperature at which the mesophase appears. Original studies were on symmetrical molecules and these were extended to include typical liquid crystal molecules with diacetylenes providing a polymeric backbone and unsymmetrically substituted diacetylenes including Schiffs bases with long alkyl chains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01913413
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  • 17
    Electronic Resource
    Electronic Resource
    Can Australian farming systems be more sylvan? (1993)
    Springer
    Agroforestry systems 22 (1993), S. 17-24 
    Details
    ISSN: 1572-9680
    Keywords: Australian farming systems ; extension ; farmer attitudes ; revegetation ; policy vision
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract This paper discusses the extent to which Australian agriculture is integrating trees into farming systems and concludes that while broad environmental awareness and concern may have increased, Australian agriculture exemplifies essentially the same attitudes to native vegetation as those held by the first European settlers. It is suggested that for real change to occur, land users require three key ingredients — commitment, knowledge and resources. The state of play with respect to each of these key factors is reviewed and suggestions for reform mooted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00707466
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  • 18
    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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  • 19
    Electronic Resource
    Electronic Resource
    Soil physical factors affecting the growth of sycamore (Acer pseudoplatanus L.) in a silvopastoral system on a stony upland soil in North-East Scotland (1993)
    Springer
    Agroforestry systems 24 (1993), S. 295-306 
    Details
    ISSN: 1572-9680
    Keywords: root growth ; soil compaction ; aeration ; soil strength ; soil moisture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Tree growth and soil physical properties were compared on two grazed plots planted with sycamore at 5 and 10 m square spacing on an upland Scottish site. Both plots received fertilizer and stocking density of ewes and lambs was adjusted to maintain a constant sward height. Mean tree height in 1990 and height increment (1988–90) were significantly greater in the 5 m spaced plot (P〈0.05). Although matric potential under the trees was generally greater than in the grassed rows between trees, mean penetration resistance (37–107 mm depth) was significantly greater (P〈0.01) under the trees. Even when the soil was close to field capacity, less than 10% of penetrometer readings were 〈 1 MPa under the trees, in comparison to 44% in grassed areas between trees. This demonstrates that surface compaction due to preferential treading by sheep near the base of trees was sufficient to have seriously reduced tree root growth. Penetration resistance under the 5 m spaced trees was significantly less (P〈0.05) than under the 10 m spaced trees. A technique for estimating the probability of root deflections by stones (in 35 mm depth intervals), Ps, from penetrometer readings was used. A significant relationship (P〈0.1) was found between tree height increment and depth to Ps≥0.4 in the 10 m plot.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00705628
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  • 20
    Electronic Resource
    Electronic Resource
    Current status and future strategy in breeding grasspea (Lathyrus sativus) (1993)
    Springer
    Euphytica 73 (1993), S. 167-175 
    Details
    ISSN: 1573-5060
    Keywords: ODAP ; BOAA ; neurotoxin ; Lathyrism ; drought-tolerance ; toxicology ; interspecific-hybridization ; mutation breeding ; germoplasm collections
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Efforts in grasspea (Lathyrus sativus) improvement have increased since the development of lines that are very low in the neurotoxin Beta-N-oxalyl-L-alpha-beta-diamino propionic acid (ODAP); also referred to as Beta-N oxalyl-amino-L-alanine (BOAA). Many programs now address several related aspects of improvement simultaneously. These include reduced ODAP concentrations, insect and disease resistance, nitrogen fixation, agronomic practices, fodder and forage production, and components for increased yielding ability. The coordinated, multidisciplinary approach now being applied to the genetic improvement of grasspea should allow the potential of this largely neglected grain legume to be fully realized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00027192
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