Wszystkie pola: Sikora, Teresa - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Molecular probes for detection of wheat chromosomal fragments in rye.
Autorzy:: Rafalski, Andrzej
Wiśniewska, Iwona
Sikora, Teresa
Łapiński, Bogusław
Powiązania:: https://bibliotekanauki.pl/articles/2198780.pdf
Data publikacji:: 2000-12-20
Wydawca:: Instytut Hodowli i Aklimatyzacji Roślin
Tematy:: introgression
PCR
rye
Southern blotting
Triticum durum probe
wheat
wheat specific probes
Opis:: Twelve DNA fragments amplified on templates of Triticum urartu, Aegilops speltoides and Aegilops squarrosa were separated, reamplified and used as digoxigenin-labelled probes. The species and genome specificity of probes was evaluated by Southern dot-blot hybridisation to Triticum durum, the donors of wheat genomes, rye and rye with introgressed wheat chromosome fragments. In comparison to labelled genomic DNA of T. durum, the probes obtained by labelling PCR-amplified fragments exhibited higher specificity to wheat genomes. Under the applied hybridisation conditions all probes showed different degree of cross-hybridisation to rye DNA. Some probes indicated quantitative difference in their specificity to wheat genomes, but generally the intensity of hybridisation to the genomes A, S and D was independent of the origin of an amplified fragment. Selected probes, used in dot-blot hybridisation system together with genomic DNA of T. durum, may increase the sensitivity of screening wheat chromosomal fragments introgressed to rye.
Źródło:: Plant Breeding and Seed Science; 2000, 44; 27-37
1429-3862
2083-599X
Pojawia się w:: Plant Breeding and Seed Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Local Magnetic and Electronic Properties of the A$\text{}_{2}$FeM'O$\text{}_{6}$ (A = Ba, Sr, Ca, M' = Mo, Re) Double Perovskites
Autorzy:: Zając, D.
Sikora, M.
Prochazka, V.
Borowiec, M.
Stępień, J.
Kapusta, Cz.
Riedi, P. C.
Marquina, C.
De Teresa, J. M.
Ibarra, M. R.
Powiązania:: https://bibliotekanauki.pl/articles/2047344.pdf
Data publikacji:: 2007-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.30.-m
76.60.-k
76.60.Jx
78.80.En
Opis:: The results of a combined NMR, X-ray absorption spectroscopy and X-ray magnetic cirrcular dichroism study of the AA'FeMoO$\text{}_{6}$ and AA'FeReO$\text{}_{6}$ double perovskites are presented. They revealed a dependence of electronic and magnetic properties, including a d-electron transfer between Fe and Mo sites, on the structural tolerance factor. The maximum value of the 4d Mo electron occupation and the corresponding Mo moment is obtained for the tolerance factor of unity. This corresponds to the maximum strength of the magnetic interaction and, respectively, to the Curie temperature. The dominant T$\text{}^{5}\text{}^{/}\text{}^{2}$ type temperature dependence of the Mo hyperfine field reveals the half-metallicity of the AA'FeMoO$\text{}_{6}$ compounds. Antisite defects and antiphase boundaries have been identified in NMR measurements and the strength of their magnetic coupling have been determined. A considerable orbital contribution to the Re and Fe magnetic moments were found in the NMR and X-MCD measurements on the AA'FeReO$\text{}_{6}$ compounds. Its magnitude decreases with increasing structural tolerance factor and is correlated with their magnetic anisotropy.
Źródło:: Acta Physica Polonica A; 2007, 111, 6; 797-820
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A $\text{}^{55}$Mn NMR Study of La$\text{}_{0.33}$Nd$\text{}_{0.33}$Ca$\text{}_{0.34}$Mn O$\text{}_{3}$ with $\text{}^{16}$O and $\text{}^{18}$O
Autorzy:: Rybicki, D.
Kapusta, Cz.
Riedi, P. C.
Oates, C. J.
Sikora, M.
Zając, D.
De Teresa, J. M.
Marquina, C.
Ibarra, M. R.
Powiązania:: https://bibliotekanauki.pl/articles/2037128.pdf
Data publikacji:: 2004
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.60.-k
75.47.Gk
Opis:: A $\text{}^{55}$Mn NMR study of $\text{}^{16}$O and $\text{}^{18}$O containing La$\text{}_{0.33}$Nd$\text{}_{0.33}$Ca$\text{}_{0.34}$Mn O$\text{}_{3}$ is reported. The spin-echo spectra measured at 4.2 K and zero field consist of a double exchange line corresponding to the ferromagnetic metallic regions. The line intensity is more than an order of magnitude lower for the $\text{}^{18}$O compound, which indicates an order of magnitude lower content of the ferromagnetic metallic phase in this compound. The frequency dependence of the spin-spin relaxation time T$\text{}_{2}$ shows a pronounced minimum at the center of the double exchange line of both compounds due to the Suhl-Nakamura interaction, which indicates that the ferromagnetic metallic regions are at least 10~nm in size. The results are discussed in terms of the influence of oxygen isotopic substitution on phase segregation.
Źródło:: Acta Physica Polonica A; 2004, 105, 1-2; 183-188
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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