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Karyotyping of the narrow-leafed lupin (Lupinus angustifolius L.) by using FISH, PRINS and computer measurements of chromosomes

100%
Kaczmarek A., Naganowska B., Wolko B.
Journal of Applied Genetics
|
2009
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vol. 50
|
issue 2
77-82
EN
BAC (bacterial artificial chromosome) clones from the genomic BAC library of the narrow-leafed lupin (Lupinus angustifolius) were used for cytogenetic mapping of mitotic metaphase chromosomes of that species by the BAC-FISH technique. Location of the clones, together with cytogenetic markers localised earlier by FISH (fluorescence in situ hybridisation) and PRINS (primed in situ DNA labelling), was combined with computer-aided chromosome measurements, to construct the first idiogram of the narrow-leafed lupin. The chromosomes are meta- or submetacentric; the mean absolute chromosome lengths range from 1.9 mum to 3.8 mum, and mean relative lengths from 1.6% to 3.3%. Data concerning linkage of resistance to 2 fungal pathogens as well as assignment of the second linkage group to the appropriate chromosome are given for the first time.
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Magnetic Properties of YBCO-PST Composites

76%
Andrzejewski B., Kaczmarek A., Stankowski J., Hilczer B., Marfaing J., Régnier S., Caranoni C.
Acta Physica Polonica A
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2000
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vol. 98
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issue 6
739-746
EN
The magnetic properties of granular superconductor-insulator composites were investigated. The composites were random composition of the YBa_{2}Cu_{3}O_{7-δ} (YBCO) high-temperature superconductor and Pb(Sc_{0.5}Ta_{0.5})O_{3} (PST) ferroelectric insulator. The composites exhibited lower superconducting volume ratio than the YBCO content. For samples with YBCO content low enough no global (the whole sample) and local (separated grains) superconductivity was observed. The observed decay of the superconductivity, lowering of the critical temperature, and the increase in number of paramagnetic centres as PST content increases are explained assuming reaction among YBCO and PST phases and possible formation of an additional ones, which did not exist in the initial powders.
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