Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Chemistry  (5)
  • 42.55.Lt  (1)
  • Self-incompatibility  (1)
  • 1
    ISSN: 1432-2242
    Keywords: Key words S-allele-specific PCR ; Haploid induction ; Homozygocity ; Malus domestica ; Self-incompatibility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  To obtain homozygous genotypes of apple, we have induced haploid development of either the female or the male gametes by parthenogenesis in situ and anther culture, respectively. Of the shoots obtained, which were mainly of a non-haploid nature, some could be derived from fertilised egg cells or from sporophytic anther tissue. In order to select the shoots having a true haploid origin, and thus homozygotes, we decided to use the single multi-allelic self-incompatibility gene as a molecular marker to discriminate homozygous from heterozygous individuals. The rationale behind this approach was that diploid apple cultivars contain 2 different alleles of the S-gene and therefore the haploid induced shoots obtained from them should have only one of the alleles of the single parent. The parental cultivars used were ‘Idared’ (parthenogenesis in situ) and ‘Braeburn’ (androgenesis), and their S-genotypes were known, except for 1 of the ‘Braeburn’S-alleles. To stimulate parthenogenetic development ‘Idared’ styles were pollinated with irradiated ‘Baskatong’ pollen, the S-alleles of the latter (2n) cultivar were also unknown. The cloning and sequence analysis of these 3 unidentified S-alleles, 1 from ‘Braeburn’ and 2 from ‘Baskatong’ is described, and we show that they correspond to the S 24 -, S 26 - and S 27 -alleles. We have optimised a method for analysis of the S-alleles of ‘Idared/Baskatong’- or ‘Braeburn’-derived in vitro plant tissues and have shown that this approach can be applied for the screening of the in vitro shoots for their haploid origin.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-0649
    Keywords: 42.55.Lt ; 42.60Jf ; 52.80.Mg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this paper, the design procedure and the performance of the single beam Asterix IV high-power iodine laser emitting at λ = 1315 nm is described. It has been developed on the basis of a 10-years experience with the 1 TW Asterix III laser-system and with the support of a 1-D and a 3-D pulse propagation code. Special emphasis has been put on achieving a high overall system efficiency and a beam intensity profile as homogeneous as possible. Presently, Asterix IV provides output pulses with durations from 0.2 to several ns. At a duration of 0.4 ns, the pulse power is 3 TW and at a duration of 5 ns the pulse energy reaches 2.1 kJ. Under these conditions, the laser can be fired every twenty minutes.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 71 (1959), S. 229-236 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Einwirkung von Stickstoffmonoxyd und Chlor auf gesättigte Kohlenwasserstoffe in Gegenwart von Licht eines Wellenlängenbereiches unterhalb ∼ 420 mμ führt je nach den Versuchsbedingungen entweder zu gem. Chlor-nitroso-Verbindungen oder zu Bis-Nitroso-Verbindungen. Durch gleichzeitigen Zusatz von Chlorwasserstoff erhält man Oxime in Form ihrer Hydrochloride in zum Teil sehr guten Ausbeuten und in hervorragender Reinheit. Der Reaktionsmechanismus dieser photochemischen Reaktion wird erörtert. Abschließend wird auf die mögliche technische Bedeutung des Verfahrens mit „Licht als Reaktionspartner“ als eines neuen Weges zu den polymerisationsfähigen, Fasern und Kunststoffe bildenden Lactamen hingewiesen.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 81 (1969), S. 292-293 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 593 (1991), S. 200-206 
    ISSN: 0044-2313
    Keywords: BiI3—HgI2 system ; BiI3—I2 system ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on the Barogram and Melting Diagram of the Systems BiI3—HgI2 and BiI3—I2The barograms of the systems BiI3—HgI2 and BiI3—I2 are determined by total pressure measurements in a membrane manometer. The melting diagrams follow from DTA measurements and the barogram. Both systems are eutectic with eutectica at 1.5 mol% BiI3 and 110°C for BiI3—I2 and 9 mol% BiI3 and 243°C for BiI3—HgI2.
    Notes: Die Zustandsbarogramme der Systeme BiI3—HgI2 und BiI3—I2 wurden durch Druckmessungen im Membrannullmanometer ermittelt. Die Schmelzdiagramme wurden aus DTA-Messungen und den Barogrammen aufgestellt. Beide Systeme sind einfach eutektisch mit Eutektika bei 1,5 Mol-% BiI3 und 110°C für BiI3—I2 und 9 Mol-% BiI3 und 243°C für BiI3—HgI2.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 601 (1991), S. 83-92 
    ISSN: 0044-2313
    Keywords: Bismuth triiodide ; decomposition equilibrium ; transport equilibrium ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on the Decomposition Equilibrium BiI3 ⇌ BiI + I2 and Transport Equilibrium 2Bi + BiI3 ⇌ 3BiIWe determined the decomposition equilibrium (1) and the transport equilibrium (2) by a membranezeromanometer and by CTR experiments. The enthalpy of formation for BiI was concluded from the equilibrium constants. With the standard entropy \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm S}^{\rm 0} ({\rm BiI, g, 298}) = 65.8 \pm 0.2\,{\rm cal/K} \cdot {\rm mol} $$\end{document} follow the values \documentclass{article}\pagestyle{empty}\begin{document}$$ \Delta {\rm H}_{\rm f}^0 ({\rm BiI, g, 298}) = 20.1 \pm 4\,{\rm kcal/mol} $$\end{document} from the first, and \documentclass{article}\pagestyle{empty}\begin{document}$$ \Delta {\rm H}_{\rm f}^0({\rm BiI, g, 298}) = 22.0 \pm 2\,{\rm kcal/mol} $$\end{document} from the second equation, by both methods.
    Notes: Das Zersetzungsgleichgewicht BiIl3, g = BiI, g + I2, g (1) und das Transportgleichgewicht 2Bi, fl + BiI3, g = 3BiI, g (2) wurden im Membrannullmanometer gemessen und letzteres auch durch chemische Transportreaktionen ermittelt. Aus den Gleichgewichtskonstanten wurde die Bildungsenthalpie des BiI, g hergeleitet. Man erhält mit der Standardentropie \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm S}^{\rm 0} ({\rm BiI, g, 298}) = 65,8 \pm 0,2\,{\rm cal/K} \cdot {\rm mol} $$\end{document} aus ersterem Gleichgewicht \documentclass{article}\pagestyle{empty}\begin{document}$$ \Delta {\rm H}_{\rm B}^0 ({\rm BiI, g, 298}) = 20,1 \pm 4\,{\rm kcal/mol,} $$\end{document} und aus letzterem nach beiden Herleitungen \documentclass{article}\pagestyle{empty}\begin{document}$$ \Delta {\rm H}_{\rm B}^0 = 22,0 \pm 2\,{\rm kcal/mol}{\rm .} $$\end{document}.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 8 (1969), S. 281-282 
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...