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  • Chemistry  (207)
  • dihaploid  (3)
  • 71.20  (2)
  • Magnetism
  • 2000-2004  (2)
  • 1975-1979  (50)
  • 1955-1959  (71)
  • 1950-1954  (89)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Isochromat spectroscopy using SXAPS equipment (1979)
    Springer
    Applied physics 20 (1979), S. 37-40 
    Details
    ISSN: 1432-0630
    Keywords: 71.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Any conventional soft x-ray appearance potential spectrometer may be converted to an isochromat spectrometer by placing an absorber foil of suitably chosen thickness in front of the x-ray detector. In the present work, we demonstrate the principle and work out in detail the properties of an aluminum absorption foil. Isochromats of a hafnium sample are compared to results obtained with a crystal x-ray spectrometer. Also, the equivalence of an isochromat and an SXAPS measurement at the same energy will be shown. The densities of unoccupied states as derived from the respective experiments are in pretty good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00901784
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  • 2
    Electronic Resource
    Electronic Resource
    Deconvolution of appearance potential spectra II (1979)
    Springer
    Applied physics 20 (1979), S. 299-303 
    Details
    ISSN: 1432-0630
    Keywords: 71.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We have recently introduced a new method for the inversion of autoconvolution integrals [1]. In this paper, we describe an improvement of the previous algorithm which results from the consequent use of cubical spline functions. The treatment given here is mathematically more consistent and offers better numerical stability than that given earlier. The method is applied to the deconvolution of the rather narrow NiL III appearance potential line. Problems of stability and error propagation are discussed in some detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00895000
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  • 3
    Electronic Resource
    Electronic Resource
    Inheritance of genetic markers from two potato dihaploids and their respective parent cultivars (1978)
    Springer
    Euphytica 27 (1978), S. 681-688 
    Details
    ISSN: 1573-5060
    Keywords: Potato ; dihaploid ; marker genes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In the first inbred generation (I1) of cv. Black 4495 a dark green, slowly growing mutant (coded ds) was found, whereas the I1 of its self-compatible dihaploid, B16, comprised this ds mutant and in addition the mutants virescens (v) and yellow margin (ym). The occurrence of ds and ym might trace back to diploid S. phureja, one of the ancestors of Black 4495. No lethal mutants were observed in I1 of B16. Analysis of I1 of cv. Gineke revealed a simplex condition for virescence and either duplex or triplex heterozygosity for one lethal gene. On the other hand, the I1 of its dihaploid, G254, segregated for virescence and for three different lethal genes. It is shown that both in B16 and in G254 homozygosity of an S-bearing translocation causes early death of embryo and endosperm, thus preventing seed development. From this study it appeared that the three lethal genes from G254 affect germination rate of the seeds. The genotypes at 11 loci of B16 and G254 are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00023703
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  • 4
    Electronic Resource
    Electronic Resource
    Genetics of self-compatibility in dihaploids of Solanum tuberosum L. 4. Linkage between an S-bearing translocation and a locus for virescens (1978)
    Springer
    Euphytica 27 (1978), S. 381-384 
    Details
    ISSN: 1573-5060
    Keywords: Solanum tuberosum ; potato ; self-compatibility ; dihaploid ; linkage ; virescens ; translocation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Three dihaploids of Solanum tuberosum (two self-compatible, one self-incompatible) were found to be heterozygous for a monogenic recessive virescent mutant. Intercrossing resulted in the expected 3 : 1 ratio only in crosses involving one self-compatible and one self-incompatible parent. Self-compatible x self-compatible matings produced F1's in which 6:1 was found. The same ratio was observed in the self progeny of the two self-compatible dihaploids. This significant deviation could be explained by assuming linkage (25% crossing-over) between v and an S-bearing translocation. This translocation causes self-compatibility in the dihaploids used and early lethality when homozygous.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00043162
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  • 5
    Electronic Resource
    Electronic Resource
    Genetics of self-compatibility in dihaploids of Solanum tuberosum L. 5. The S-genotype of tetraploid potato cultivar gineke (1978)
    Springer
    Euphytica 27 (1978), S. 385-388 
    Details
    ISSN: 1573-5060
    Keywords: Solanum tuberosum ; potato ; incompatibility ; dihaploid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Investigations of the genetics of self-compatibility and self-incompatibility in dihaploids and diploid derivatives from cv. Gineke revealed the presence of S 1, S2 and S 3 at the S-locus of Gineke and in addition an S 1-allele on a translocation. By means of a complete tester set involving the S-alleles S 1, S2 and S 3 (all from Gineke) and S 4 (from Black 4495) it was demonstrated that some Gineke dihaploids were compatible with all six testers. This indicated a fourth S-allele in Gineke, which differs from those in the tester series and was therefore assigned S 5. Additional evidence was obtained from an analysis of F1's from crosses of two S 5-bearing dihaploids and one of the testers. So the S-genotype of cv. Gineke was identified as S 1S2S3S5/S1, the second S 1 being the S-allele on a translocated fragment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00043163
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  • 6
    Electronic Resource
    Electronic Resource
    Determination of the base-pairing content of four specific tRNAs by infrared spectroscopy (1977)
    New York : Wiley-Blackwell
    Biopolymers 16 (1977), S. 1735-1745 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Infrared spectroscopy was used for the determination of the base-pairing content of four specific tRNAs in deuterium oxide solution. Infrared spectra were obtained in the 1750-1550 cm-1 region at various temperatures ranging from about 15 to 90°C. Melting curves were constructed by plotting the molar extinction coefficient at ν = 1657 cm-1 versus temperature. These transition curves enabled us to determine the ranges of temperature which correspond to the ordered (partially double-stranded) or randomly coiled structure of the tRNA. For a set of wavenumbers the extinction coefficients at these temperatures were used for the calculation of the base-pairing content. The procedure employed here is based on a method described earlier by Thomas [(1969) Biopolymers 7, 325-334]. For the conditions selected for this investigation (Mg2+-free D2O-buffer; 0.01M tris-DCl, 0.015M NaCl, pD 7.5) the results of this determination agree within the limits of errors with the number of base pairs predicted by the cloverleaf model.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.1977.360160810
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  • 7
    Electronic Resource
    Electronic Resource
    Über die Bildung von Verkrustungen in Spinnbadeindampfern der Viscosefaserindustrie (1952)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 24 (1952), S. 401-402 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird gezeigt, daß die im Betriebe von Spinnbadeindampfern fallweise auftretenden, schwer entfernbaren Verkrustungen der Heizrohre im wesentlichen durch die Ausscheidung von Glauberit verursacht werden. Verschiedene Einflüsse, die die Bildung des Doppelsalzes begünstigen, werden aufgeklärt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330240704
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  • 8
    Electronic Resource
    Electronic Resource
    Wirkungsweise und Anwendungsergebnisse der registrierenden StaubwaageVortrag auf der 7. Arbeitstagung des Fachausschusses für Staubtechnik im VDI am 2. April 1952 in Wiesbaden; vgl. den Tagungsbericht, diese Ztschr. 24, 463 [1952]. (1952)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 24 (1952), S. 505-508 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Nach einführender Betrachtung des Meßproblems hinsichtlich der zu verlangenden Meßgenauigkeit und den sich ergebenden Einzelforderungen werden die Bestandteile des Staubmeßgerätes, nämlich die Waage, die Staubabscheidungskammer, das Gebläse, das Hochspannungsgerät und die zum selbsttätigen Ablauf notwendige Automatik besprochen. Ferner wird über vergleichende Versuche mit einem optischen Staubmeßgerät berichtet.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330240906
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  • 9
    Electronic Resource
    Electronic Resource
    Die Berechnung von Wärmeaustauschern mit Hilfe dimensionsloser KennzahlenVorgetragen auf der Sitzung des Arbeitsausschusses „Wärmeaustauscher und Verdampfer“ des VDI-Fachausschusses Verfahrenstechnik am 26. März 1952 in Bad Kreuznach; vgl. a. diese Ztschr. 24, 363 [1952]. (1953)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 25 (1953), S. 221-227 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Ähnlichkeitstheorie hat den Weg gezeigt, die Gesetzmäßigkeiten des Wärmeüberganges mit Hilfe dimensionsloser Kennzahlen auszudrücken. Die Anzahl der zur eindeutigen Beschreibung eines Vorganges notwendigen Kenngrößen ist recht verschieden, sie ist z. B. besonders groß bei komplizierten Austauscherformen. Bei der Zusammenfassung der Einzelfaktoren zu Kennzahlen hat man gewisse Freiheiten, die man dazu benützen kann, die Gesetzmäßigkeiten bei der Berechnung von Wärmeaustauschern in einer möglichst zweckmäßigen Form darzustellen. An einem Beispiel wird gezeigt, daß die Rechnungen sich verhältnismäßig einfach durchführen lassen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330250502
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  • 10
    Electronic Resource
    Electronic Resource
    Neue Zentrifuge sehr hoher Normalbeschleunigung (1954)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 26 (1954), S. 94-96 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die konstruktiven Voraussetzungen für Laboratoriumszentrifugen mit bisher in der Praxis nicht erreichbaren Fliehkräften werden dargelegt. Das entwickelte Gerät, das im Gegensatz zu anderen Bauarten nur eine einzige radial um die Drehachse rotierende Zelle für die Einsatzflüssigkeit besitzt, wird beschrieben. Es ermöglicht bei 84 000 U/min Normalbeschleunigungen von 584 000 g, bei 120 000 U/min und kleineren Präparatmengen von 915 000 g. Besondere Einsätze zur Erfassung des Sediments bringen bei präparativen und möglicherweise auch analytischen Arbeiten besondere Vorteile.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330260208
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