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  • Chemical Engineering  (4)
  • Spektralphotometrie  (4)
  • Rust resistance  (3)
  • 1
    Digitale Medien
    Digitale Medien
    Genetics of resistance to Puccinia graminis tritici in ‘Chris’ and ‘W3746’ wheats (1987)
    Springer
    Theoretical and applied genetics 73 (1987), S. 846-855 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Puccinia graminis tritici ; Triticum aestivum ; Monosomic analysis ; Rust resistance ; Gene identification
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary ‘Chris’ wheat possessed genes Sr5, Sr7a, Sr8a, Sr9g and Sr12. ‘W3746’, derived from the cross ‘Chris’/‘Baart’, possessed Sr7a and Sr12. The response conferred by Sr7a was influenced by the genetic background. Although Sr7a or Sr12 alone conferred no observable resistance upon adult plants, the adult resistances of ‘Chris’ and ‘W3746’ to predominant pathotypes appeared to be associated with the interaction of Sr7a and Sr12, or genes at closely linked loci.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00289389
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  • 2
    Digitale Medien
    Digitale Medien
    Genetics of resistance toPuccinia graminis tritici andPuccinia recondite tritici in four South African wheats (1990)
    Springer
    Theoretical and applied genetics 79 (1990), S. 401-410 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Puccinia graminis tritici ; Puccinia recondita Tritici ; Triticum aestivum ; Rust resistance ; Gene identification
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Genes for resistance toPuccinia graminis tritici andPuccinia recondita tritici identified in four South African wheats were:Sr6,Sr8a,Sr9e, andLr13 in ‘W3762’;Sr5,Sr8a,Sr9b,Sr12,Sr24,Lr13, andLr24 in ‘W3760’;Sr2,Sr24,SrC,Lr13, andLr24 in ‘W3751’; andSr7a,Sr23,Sr36, andLr16 in ‘W3755’. GenesSr2,Sr9e, andSr24 also conferred adult plant resistance to the predominant pathotypes ofP. graminis tritici. GenesSr7a,Sr23, andSrC, when present alone, did not confer acceptable adult plant resistance, even though low seedling reactions were associated with them when tested with the same pathotypes. Genetic recombination betweenLr13 andSr9e was estimated at 12.5%±2.3%.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01186086
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  • 3
    Digitale Medien
    Digitale Medien
    Characterization of variability and relationships among components of partial resistance to leaf rust in CIMMYT bread wheats (1991)
    Springer
    Theoretical and applied genetics 82 (1991), S. 674-680 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Puccinia recondita tritici ; Triticum aestivum ; Rust resistance
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary A study of spring bread wheat (Triticum aestivum) germ plasm developed at the International Maize and Wheat Improvement Center (CIMMYT) showed highly significant phenotypic variability for each component of partial resistance (namely, uredial appearance period, latency period, uredial number and uredial size) to Puccinia recondita f. sp. tritici. All of the wheat genotypes displayed longer uredial appearance and latency periods and decreased uredial number and uredial size when compared to the susceptible check cultivar ‘Morocco’. Positive correlations between uredial appearance period and latency period, and uredial number and uredial size, and negative correlations between uredial appearance and latency periods and uredial number and uredial size, inclusive, suggested that the components of partial resistance were either tightly linked or under pleiotropic genetic control. Compared to ‘Morocco’, all entries had slow disease progress in the field and variation occurred in the germ plasm for the area under the leaf rust progress curve. Disease progress was negatively correlated with uredial appearance and latency periods, whereas a positive correlation was observed with uredial number and uredial size. Certain genotypes displayed high levels of partial resistance resulting in low disease incidence in the field.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00227310
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  • 4
    Digitale Medien
    Digitale Medien
    Spectrophotometric determination of cobalt(II), nickel(II) and copper(II) with 1-(2-quinolylazo)-2-acenaphthylenol (1977)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 284 (1977), S. 42-42 
    Details
    ISSN: 1618-2650
    Schlagwort(e): Best. von Kobalt(II), Nickel(II), Kupfer(II) mit 1-(2-Chinolylazo)-2-acenaphthylenol ; Spektralphotometrie
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00464034
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  • 5
    Digitale Medien
    Digitale Medien
    2-Methyl-1,4-naphthoquinone-thiosemi-carbazone as a sensitive reagent for the spectrophotometric determination of osmium (1982)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 311 (1982), S. 521-521 
    Details
    ISSN: 1618-2650
    Schlagwort(e): Best. von Osmium ; Spektralphotometrie ; Me-thylnaphthochinon-thiosemicarbazon
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00521182
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  • 6
    Digitale Medien
    Digitale Medien
    Acenaphthenequinonemonoxime as a spectrophotometric reagent for the determination of iridium by solvent extraction (1974)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 268 (1974), S. 31-32 
    Details
    ISSN: 1618-2650
    Schlagwort(e): Best. von Iridium mit Acenaphthenchinonmonoxim ; Spektralphotometrie
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00430905
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  • 7
    Digitale Medien
    Digitale Medien
    Extractive spectrophotometric determination of ruthenium employing 2-methyl-1,4-naphthoquinone monoxime as a reagent (1979)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 299 (1979), S. 128-128 
    Details
    ISSN: 1618-2650
    Schlagwort(e): Best. von Ruthenium mit 2-Methyl-1,4-naphtochinon-monoxim ; Spektralphotometrie ; Extraktion
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00518425
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  • 8
    Digitale Medien
    Digitale Medien
    Electrical conduction and ultrasound wave propagation in particulate and short fiber composites of PVC. II: PVC-Al coated glass fiber composites (1992)
    Brookfield, Conn. : Wiley-Blackwell
    Journal of Vinyl and Additive Technology 14 (1992), S. 93-100 
    Details
    ISSN: 0193-7197
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Poly(vinylch1oride) composites containing 2 to 20 wt% of aluminum coated glass fiber (AlCGF) were prepared by the mechanical mixing and hot compression technique. Their electrical conduction and ultrasound wave propagation at frequencies of 2 to 9 MHz were studied. The electrical resistivity of these composites was lowered because of fiber-fiber contact formation, which is evident from optical photomicrographs of the composites. Other morphological investigations, such as X-ray diffraction and DTA, show matrix-filler interaction. The limiting resistivity of PVC/AlCGF composite is 10 ohm-cm at 14 wt% (8.11 vol%) of fiber concentration. Ultrasound wave propagation through these composites having fiber-fiber contacts has shown that both absorption and velocity are high at 9 MHz. Other ultrasound parameters were studied, such as excess absorption, relative velocity, relative modulus variation with composition as well as with propagation constant. No definite correlation exists between electrical conduction due to fiber-fiber contact formation and ultrasound wave propagation.
    Zusätzliches Material: 14 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/vnl.730140210
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  • 9
    Digitale Medien
    Digitale Medien
    Electrical conduction and ultrasound wave propagation in particulate and short fiber composites of PVC. I: PVC-cu/al particulate composites (1992)
    Brookfield, Conn. : Wiley-Blackwell
    Journal of Vinyl and Additive Technology 14 (1992), S. 33-42 
    Details
    ISSN: 0193-7197
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Poly(vinylchloride) compositions containing 0-24 v% of copper and 0-48 v% of aluminium powders were prepared and their d.c. electrical conduction and ultrasound wave propagation at 2, 3, 6, 9 MHz were studied. Segregated network formation by the filler as evident by photomicrograph. DTA and X-ray diffraction, drastically reduces the electrical resistivity in these composites. The limiting resistivity of PVC/Cu composite is 31.62 ohm-cm and that of PVC/Al composites is 1258 ohm-cm. Ultrasound wave propagation through these composites having segregated network of fillers shows that absorption at 9 MHz is more in copper filled PVC than in aluminium filled PVC. Dispersion at 9 MHz is more in aluminium filled composites than in copper filled composites. Other parameters, such as excess absorption, relative velocity, relative modulus were evaluated. No definite correlation exists between electrical conduction due to segregated network formation and ultrasound wave propagation.
    Zusätzliches Material: 25 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/vnl.730140110
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  • 10
    Digitale Medien
    Digitale Medien
    Investigation of multiphase polymeric systems of PVC (1992)
    Brookfield, Conn. : Wiley-Blackwell
    Journal of Vinyl and Additive Technology 14 (1992), S. 62-68 
    Details
    ISSN: 0193-7197
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Graft copolymers of chlororubber-20-g-(ethylacrylate-co-acrylonitrile (2:1)) and chlororubber-20-g-(styrene-co-vinyl acetate-co-acrylonitrile [1:1:1]) have been synthesized by solution precipitation polymerization technique. The graft copolymers have been characterized by elemental analysis, IR spectroscopy, and viscometry. The graft copolymers have been melt blended with PVC. The mechanical properties, such as flexural, tensile strength, and impact strength, of the blends have been studied to evaluate the relative performance of various graft copolymer blends of PVC as impact modified systems. Mechanical properties of the blends have been discussed in terms of morphology of impact fractured samples.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/vnl.730140204
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