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  • Articles  (57)
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  • 1
    Electronic Resource
    Electronic Resource
    Free Radicals in Inorganic Chemistry. Advances in Chemistry Series, No. 36. Edited by Robert F. Gould (1965)
    s.l. : American Chemical Society
    Inorganic chemistry 4 (1965), S. 604-604 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50026a046
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  • 2
    Electronic Resource
    Electronic Resource
    An Electron Paramagnetic Resonance Study of Metal-Aromatic Bonding in Bis(hexamethylbenzene)iron(I) (1966)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 88 (1966), S. 623-623 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00955a053
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  • 3
    Electronic Resource
    Electronic Resource
    Root growth of subalpine and montane Eucalyptus seedlings at low soil temperatures (1997)
    Springer
    Trees 12 (1997), S. 35-41 
    Details
    ISSN: 0931-1890
    Keywords: Key words Eucalyptus pauciflora subsp. pauciflora ; Eucalyptus nitens ; Root growth ; Root configuration ; Adaptations to soil temperature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract  This study examines the effect of different soil temperatures on root growth in seedlings of Eucalyptus pauciflora Sieber ex Sprengel subsp. pauciflora and Eucalyptus nitens (Deane & Maiden) Maiden. Seedlings were grown in a glasshouse in pots containing soil. Pots were held in water baths maintained at 3, 7 or 13°C, whilst shoots were exposed to ambient glasshouse temperatures. The experiments were designed to separate direct effects of soil temperature from effects due to differences in seedling size. In the first experiment, seedlings were grown to constant height (25 cm for both species), in the second to constant time (100 days for E. pauciflora and 64 days for E. nitens) and in the third experiment seedlings were transferred between soil temperatures. The rate of growth of both species increased with increasing soil temperature. E. nitens grew faster than E. pauciflora at 7 and 13°C, but E. pauciflora grew faster than E. nitens at 3°C. The rate of browning of roots increased with decreasing soil temperature and at a faster rate in E. nitens than E. pauciflora. Root length was highly correlated to root mass within diameter and colour classes (r2 〉 0.7). However, brown roots were heavier than white roots. Consequently, changes in root mass did not reflect changes in root length when the proportion of brown to white root also changed. For example, at a constant height of 25 cm at 3°C, E. nitens had greater root mass but lesser root length than E. pauciflora. E. pauciflora at 3°C grew faster, and had more root length and less brown roots than E. nitens. This supports the argument that E. pauciflora is better adapted than E. nitens to survive and grow at lower soil temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00009694
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  • 4
    Electronic Resource
    Electronic Resource
    Discussion of "Electron Resonance of Free radicals in the Gas Phase" (Myers, R. J. , Symons, M. C. R.) (1967)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 71 (1967), S. 11-12 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100860a601
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  • 5
    Electronic Resource
    Electronic Resource
    Discussion of Electron Resonance of Free Radicals in Gas Diffusion (1967)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 71 (1967), S. 11-12 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100860a623
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  • 6
    Electronic Resource
    Electronic Resource
    Water Potential and Leaf Elongation in Radiata Pine and Wheat (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 37 (1976), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The rate of leaf elongation in radiata pine (Pinus radiata) and wheat seedlings was closely related to the osmotic potential of the rooting solution. Sudden stress application and removal treatments caused immediate changes in the leaf elongation rate and a new steady-state rate independent of the old was quickly established. The osmotic potential in the active elongation zones of a leaf differed from that of the remainder of the leaf and was considered more appropriate for deriving turgor pressure to be related to leaf elongation. Shifts in elongation rate were associated with corresponding shifts in total leaf water potential in both species and with corresponding shifts in turgor pressure in wheat.There was a linear correlation between the pitch of the helical thickenings in the protoxylem of radiata pine needles and their elongation rate. A record of elongation rate is, therefore, preserved in the needle. Developmental aspects of the deposition of the helix are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1976.tb03973.x
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  • 7
    Electronic Resource
    Electronic Resource
    An evaluation of techniques for measuring yield turgor in excised Salix leaves (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 15 (1992), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract. The use of three techniques for determining yield turgor in excised Salix leaves was investigated. These were the osmotic-solutions technique, the psychrometer technique, and the pressure-chamber technique. The application of the osmotic-solutions technique to a range of leaf types was discussed and the appropriate corrections for volume changes and the contribution of apoplastic water were detailed. It was concluded that the osmotic-solutions technique is not satisfactory for use with slowly growing and/or very elastic leaves. The psychrometer and pressure-chamber techniques were both simple compared with the osmotic-solutions technique, and gave values for yield turgor in the range of 0·3–0·5 MPa. A disadvantage of the psychrometer technique for field applications is that it requires one psychrometer chamber per sample. The pressure-chamber technique was modified for use as a field technique where multiple sampling could be easily and inexpensively achieved. Particular care was required with this technique to prevent water loss from the leaf during stress relaxation, but simple and effective procedures for doing so were found. The modified pressure-chamber technique described here, is recommended as the preferred technique for measuring the yield turgor of leaves in experiments where many simultaneous estimates of yield turgor are to be made.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.1992.tb01463.x
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  • 8
    Electronic Resource
    Electronic Resource
    Methyl 1-Hydroxy-2,4,6-trimethoxycarbonyl-3-oxo-1-cyclohexaneacetate (1995)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 51 (1995), S. 2068-2071 
    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/S0108270195003532
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  • 9
    Electronic Resource
    Electronic Resource
    Nitrogenase activity of two genotypes of Acacia mangium as affected by phosphorus nutrition (1992)
    Springer
    Plant and soil 144 (1992), S. 51-58 
    Details
    ISSN: 1573-5036
    Keywords: Acacia mangium ; nitrogenase activity ; phosphorus nutrition ; plant genotypes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The specific nodulation, nitrogenase activity (acetylene reduction) and budgets of carbon allocation to respiration by nodulated roots were examined in two provenances of Acacia mangium Willd. grown in a glasshouse for 17 weeks to investigate the effects of soil phosphorus and genotypes of the host plant on symbiotic nitrogen fixation. Application of phosphorus (0–80 mg P kg-1 soil) increased specific nodulation (g nodule dry weight g-1 plant dry weight) of provenance Ma11 by two-fold and the percentage of nodulated root respiration allocated to nitrogenase by 50%, but had no effect on specific activity of nitrogenase or specific respiration coupled with nitrogenase activity. Improved phosphorus nutrition increased the specific nitrogenase activity of provenance Ma9 by 2-fold, the percentage of nodulated root respiration allocated to nitrogenase, and specific nitrogenase-linked respiration by 50%, respectively, but had no effect on the specific nodulation. The percentage of respiration coupled with nitrogenase activity in nodulated root respiration by provenance Ma9 was 60–70% higher than that in provenance Ma11, regardless of phosphorus levels applied. At the optimal level of phosphorus addition (10 mg P kg-1 soil), provenance Ma9 had a lower dry mass than provenance Ma11. This was accompanied by a lower nodulated root respiration and a higher percentage of nodulated root respiration allocated to nitrogenase activity in provenance Ma9.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00018844
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  • 10
    Electronic Resource
    Electronic Resource
    A comparison of sap flux and water relations of leaves of various isolated trees with special reference to foundation movement in clay soil (1992)
    Springer
    Plant and soil 140 (1992), S. 269-278 
    Details
    ISSN: 1573-5036
    Keywords: clay soil ; English Elm ; foundation movement ; leaf water potential ; Melaleuca styphelioides ; Prickly Paperbark ; Prunus cerasifera ; Purple-leaved Cherry Plum ; sap flux ; soil water extraction ; stomatal conductance ; transpiration ; Ulmus procera ; vapour pressure deficit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Diurnal variation in sap flux (S) through stems of six trees, two each of Ulmus procera SALISB., Melaleuca styphelioides SM. and Prunus cerasifera EHRH. ‘Nigra’ (referred to hereafter by their generic names), were estimated from measurements of heat pulse velocities. Leaf water potential (ψ), stomatal conductance (g s ) and transpiration from leaves (T) of all replicate trees were measured at 1300–1500h, once during the summer. On two separate occasions measurements were made of S, ψ, (g s ) and T for one each of Ulmus and Melaleuca trees to study diurnal variations in these parameters. A 12×12 m2 area around each tree was kept covered to simulate the condition of trees growing on pavements adjacent to residential properties. Sap flux for these tree species was in the order Melaleuca〉Ulmus〉Prunus. It is suggested that the smaller canopy and sapwood area in Prunus compared to the other two species is responsible for lower water potential and lower transpiration rate than the other species. Detailed analysis of the diurnal variation in sap flux and water relation of leaves of Melaleuca and Ulmus indicated sap flux of Melaleuca to be greater than that of Ulmus at the same transpiration rate per unit leaf area although the sapwood area of the two species was marginally different. This may have been due either to the difference in canopy conductance or in leaf area between the two species. With the assumption that sap flux closely resembles the rate of soil water extraction for both species, results indicate that Melaleuca is likely to extract soil water at a higher rate than Ulmus and hence is capable of causing greater shrinkage and soil movement than Ulmus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00010604
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