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  • 1
    Electronic Resource
    Electronic Resource
    Applied studies on immobilized titanium dioxide films ascatalysts for the photoelectrochemical detoxification of water (1997)
    Springer
    Journal of applied electrochemistry 27 (1997), S. 385-395 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Preliminary results are presented on the photochemical and photoelectrochemical degradation of aqueous organic solutions by anodic, thermal and sol–gel TiO2 films. The films were tested in a photochemical falling film reactor, and a photochemical/photoelectrochemical vortex reactor, and preliminary results are presented on the degradation of a range of model organics using these reactors. The former showed the best mass transport characteristics and most efficient light usage, whilst the latter reactor clearly showed the efficacy of the electric field enhancement effect. The results on the vortex reactor effectively represent a proof-of-concept of the electric field enhancement approach in large scale photoelectrochemical reactors. From time to time it is necessary to recoat the substrates, and the importance of the procedure adopted to remove ’old‘ TiO2 films prior to the fabrication of ‘new’ films is highlighted, as well as the mode of operation of the sol–gel films, and problems encountered in reactor design.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018453402332
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  • 2
    Electronic Resource
    Electronic Resource
    Genetic mapping and functional analysis of a nodulation-defective mutant (sym19) of pea (Pisum sativum L.) (1999)
    Springer
    Molecular genetics and genomics 262 (1999), S. 1-11 
    Details
    ISSN: 1617-4623
    Keywords: Key words Root nodule ; ENOD12 ; Rhizobium ; Sym19 ; Symbiosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The pea mutant line P55 is defective in root nodule formation, and this phenotype is controlled by a single recessive gene. Complementation analysis revealed that the mutation in P55 is allelic to sym19, which has previously been mapped to linkage group I. Detailed mapping revealed that the sym19 and ENOD40 loci are separated by 2.7 cM. We identified four recombination events, demonstrating that the nodulation defect caused by mutation of the sym19 locus cannot be due to mutation of ENOD40. RT-PCR experiments showed that P55 expresses ENOD12A, but there was little or no increase in the level of its transcript in response to Nod factor or infection with Rhizobium. To investigate this expression pattern further, transgenic peas carrying a pENOD12A-GUS reporter construct were made. One transgenic line was crossed with line P55, to generate F2 progeny homozygous for sym19 and carrying pENOD12A-GUS. In both WT and sym19 mutant lines, ENOD12A-GUS expression was induced at sites of lateral root emergence in uninoculated plants. In Nod+ plants pENOD12A-GUS was induced in response to Rhizobium leguminosarum bv. viciae, but no such induction was seen in the Nod− (sym19) mutants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004380051053
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