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  • 1995-1999  (6)
  • rust resistance  (3)
  • viscosity  (2)
  • 23.20Lv  (1)
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Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Rotational band in111Sn (1995)
    Springer
    The European physical journal 351 (1995), S. 1-2 
    Details
    ISSN: 1434-601X
    Keywords: 23.20Lv ; 27.60+j ; 21.20Re
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Partial level scheme of the neutron deficient111Sn isotope is established upto an excitation energy of about 9 MeV and Iπ=43/2− from γ-rays following103Rh(12C, p3n) reaction. Clear evidence for the existence of a negative parity rotational band aboveγ=23/2−, most probably based on 3p-2h configuration, is obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01292775
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  • 2
    Electronic Resource
    Electronic Resource
    Genes conferring low seedling reaction to Mexican pathotypes of Puccinia recondita f. sp. tritici, and adult-plant responses of recent wheat cultivars from the former USSR (1995)
    Springer
    Euphytica 81 (1995), S. 225-234 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; Puccinia recondita tritici ; leaf rust ; rust resistance ; partial resistance ; slow rusting ; durable resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Fifty-five spring bread wheat (Triticum aestivum L.) cultivars, mostly released between 1975 and 1991 in eight leaf rust-prone spring wheat growing regions of the former USSR, were tested in the seedling growth stage for reaction to 15 Mexican pathotypes of Puccinia recondita f. sp. tritici. In total, seven known and at least two unknown genes were identified, either singly or in combinations: Lr3 (7 cultivars), Lr10 (14), Lr13 (5), Lr14a (1), Lr16 (1), Lr23 (3); the unknown genes were identified in 14 cultivars. The first unknown gene could be either Lr9, Lr19, or Lr25; however, the second unknown gene in 9 cultivars was different from any named gene. Twelve of the 15 pathotypes are virulent for this gene, hence its use in breeding for resistance will be limited. The cultivars were also evaluated at two field locations in Mexico with two pathotypes in separate experiments. The area under the disease progress curve and the final disease rating of the cultivars indicated genetic diversity for genes conferring adult plant resistance. based on the symptoms of the leaf tip necrosis in adult plants, resistance gene Lr34 could be present in at least 20 cultivars. More than half of the cultivars carry high to moderate levels of adult plant resistance and were distributed in each region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00025611
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Suppression/expression of resistance to stripe rust in synthetic hexaploid wheat (Triticum turgidum×T. tauschii) (1995)
    Springer
    Euphytica 83 (1995), S. 87-93 
    Details
    ISSN: 1573-5060
    Keywords: hexaploid wheat ; rust resistance ; suppressors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Seventy-four hexaploid wheats, synthesized by either crossing resistantTriticum turgidum L. var.durum with susceptible/intermediateT. tauschii or susceptible/intermediateT. turgidum with resistantT. tauschii, and their parents were evaluated as seedlings in the greenhouse and as adult-plants at two field locations in Mexico for resistance to pathotype 14E14 of stripe (or yellow) rust (caused byPuccinia striiformis Westend). The seedlings of different synthetic hexaploids showed high phenotypic diversity for resistance. However, the resistance level of only 15 of the 74 synthetic hexaploid wheats were similar to the low infection types of the respective donor parents. The remaining synthetic wheats displayed either intermediate or high infection types. A similar result was also obtained in field tests, where only 18 synthetic hexaploids were resistant as adult-plants. In general, genotypes with seedling resistance were also resistant as adult-plants. A few synthetic hexaploids, which displayed intermediate or susceptible infection types as seedlings were resistant as adult-plants, indicating that additional genes for adult-plant resistance were also present. The fact that resistance of some donor parents was not expressed, or only partially expressed, in a synthetic hexaploid background suggests the presence of suppressor genes in the both the A or B, and D genomes ofT. turgidum andT. tauschii, respectively. The resistance of a donor parent was expressed in a synthetic hexaploid only if the corresponding suppressor was absent in the second parent. Moreover, the suppressors appeared to be resistance gene specific.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01678034
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Tests of Predictive Viscosity Models for Pure Liquids (1999)
    Springer
    International journal of thermophysics 20 (1999), S. 815-823 
    Details
    ISSN: 1572-9567
    Keywords: alkanes ; alkanols ; alkenes ; aromatics ; corresponding states ; cycloalkanes ; esters ; liquids ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is of considerable importance to be able to predict accurately the viscosity of liquids over a wide range of conditions. In the present work, the ability of the three-parameter generalized corresponding states principle (GCSP) for the prediction of the viscosity of pure liquids is demonstrated. The viscosity of six different classes of pure liquids, viz., alkanes (19 compounds; 207 data points), cycloalkanes (6 compounds; 74 data points), alkenes (9 compounds; 146 data points), aromatics (4 compounds; 123 data points), alkanols (8 compounds; 89 data points), and esters (4 compounds; 28 data points) have been predicted over a wide range of temperatures using the three-parameter (T c, P c, θ) GCSP. Five options for the third parameter (θ) were studied, viz., Pitzer's acentric factor ω, molar mass M, characteristic viscosity η*, critical compressibility factor Z c, and modified acentric factor Ω, in addition to groups ωZ c and ΩZ c being treated as composite third parameters. Pressure effects were neglected. Good agreement between experimental and predicted values of viscosity was obtained, especially with either ω or η* being used as the third parameter. Furthermore, the viscosities of alkanes predicted by the TRAPP method and an empirical, generalized one-parameter model for liquid hydrocarbons provide comparisons with the more accurate GCSP method. The GCSP provides a simple and yet a powerful technique for the correlation and prediction of viscosities of a variety of pure liquids over a wide range of temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022674917267
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Resistance to stripe rust in Triticum turgidum, T. tauschii and their synthetic hexaploids (1995)
    Springer
    Euphytica 82 (1995), S. 117-124 
    Details
    ISSN: 1573-5060
    Keywords: Triticum turgidum ; wheat ; Triticum tauschii ; synthetic hexaploid ; Puccinia striiformis ; stripe rust ; rust resistance ; yellow rust ; Aegilops squarrosa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Resistance to stripe rust (caused by Puccinia striiformis Westend.) of 34 Triticum turgidum L. var.durum, 278 T. tauschii, and 267 synthetic hexaploid wheats (T. turgidum x T. tauschii) was evaluated at the seedling stage in the greenhouse and at the adult-plant stage at two field locations. Mexican pathotype 14E14 was used in all studies. Seedling resistance, expressed as low infection type, was present in all three species. One hundred and twenty-eight (46%) accessions of T. tauschii, 8 (23%) of T. turgidum and 31 (12%) of synthetic hexaploid wheats were highly resistant as seedlings. In the field tests, resistance was evaluated by estimating area under disease progress curve (AUDPC). Synthetic hexaploid wheats showed a wide range of variability for disease responses in both greenhouse and field tests, indicating the presence of a number of genes for resistance. In general, genotypes with seedling resistance were also found to be resistant as adult plants. Genotypes, which were susceptible or intermediate as seedlings but resistant as adult plants, were present in both T. turgidum and the synthetic hexaploids. Resistances from either T. turgidum or T. tauschii or both were identified in the synthetic hexaploids in this study. These new sources of resistance could be incorporated into cultivated hexaploid wheats to increase the existing gene pool of resistance to stripe rust.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00027057
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Chain-scission and yellowing in high impact polystyreneNCL communication No. 5996. (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Polymer International 36 (1995), S. 309-313 
    Details
    ISSN: 0959-8103
    Keywords: high impact polystyrene ; polychromatic irradiation ; viscosity ; tensile impact ; yellowing ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Different grades of impact-modified polystyrene were studied by viscometry, tensile impact test and colour change upon exposure to polychromatic irradiation at 55°C in air. The samples underwent extensive reduction in intrinsic viscosity [η] and tensile impact strength, and yellowed upon polychromatic irradiation (λ ≥ 290 nm). Chain-scission during photo-oxidative degradation was also studied under conditions where evolution of volatiles was negligible. Tristimulus values were calculated for unirradiated and irradiated samples. The rate of oxidative degradation was maximum in the sample possessing higher unsaturation content.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pi.1995.210360402
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    Paper (German National Licenses)
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