Autor: Rogalska, I.. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: EMR study and superposition model analysis of Cr3+ and Fe3+ impurity ions in mullite powders used in aerospace industry
Autorzy:: Stefaniuk, I.
Rogalska, I..
Powiązania:: https://bibliotekanauki.pl/articles/146307.pdf
Data publikacji:: 2015
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: electron magnetic resonance (EMR)
mullites
spin Hamiltonian (SH)
superposition model (SPM)
Opis:: In this work, the electron magnetic resonance (EMR) spectra of the mullites powders were measured for different grain sizes (0.07 and 0.12 mm). We have used EMR spectroscopy at X-band, combined with superposition model (SPM) calculations to reveal electronic structure and establish correlations between structure, and surroundings of these complexes.
Źródło:: Nukleonika; 2015, 60, No. 3, part 1; 399-403
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Electron paramagnetic resonance studies of manganese and cobalt ions in YAlO3 crystals
Autorzy:: Stefaniuk, I.
Rogalska, I
Suchocki, A
Berkowski, M.
Cieniek, B.
Potera, P.
Powiązania:: https://bibliotekanauki.pl/articles/174068.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: electron paramagnetic resonance (EPR)
spin Hamiltonian
Mn2+
Mn4+
Co2+
Fe3+
Cr3+
Nd3+ and Er3+ ions
YAlO3 (YAP) crystals
Opis:: The results of X-band electron paramagnetic resonance measurements of Mn2+ and Mn4+ ions in YAlO3 (YAP) crystals in the temperature range 100–300 K are presented. Additionally, we observe electron paramagnetic resonance spectra of unintentional impurities Fe3+ and Cr3+ in YAP crystals. The angular dependence for Mn ions in YAP crystals can be presented. We aim at obtaining a better insight into the spectroscopic properties of paramagnetic Mn centers and structural information about their nearest environment in YAP host and at determining the valence of manganese ion. In this paper we compare electron paramagnetic resonance spectra for Co and Mn ions in YAP crystals.
Źródło:: Optica Applicata; 2014, 44, 1; 113-121
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: EPR measurements of ceramic cores used in the aircraft industry
Autorzy:: Stefaniuk, I.
Rogalska, I..
Potera, P.
Wróbel, D.
Powiązania:: https://bibliotekanauki.pl/articles/148814.pdf
Data publikacji:: 2013
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: Al2O3
electron paramagnetic resonance (EPR)
mullite
nanopowders
Opis:: In this work the electron paramagnetic resonance (EPR) spectra of Al2O3 and ZrO2 powders were measured for different size of grains (0.074, 0.044 mm) as well as the mullites (0.07 and 0.12 mm). Also were investigated the ceramic cores. The measurements were performed at room temperature and in the temperature range from 140 up to 380 K. The main purpose of this work was to investigate the possible relationships between the EPR spectra and the size of powder grains as well as the identification of EPR spectra in view of the potential application of EPR technique as a fingerprinting method.
Źródło:: Nukleonika; 2013, 58, 3; 391-395
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Role of epigenetic mechanisms in plant response to low temperature
Autorzy:: Achrem, M.
Skuza, A.
Kalinka, A.
Szucko, I.
Filip, E.
Slominska-Walkowiak, R.
Rogalska, S.M.
Powiązania:: https://bibliotekanauki.pl/articles/19428.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: Plants are continuously exposed to various environmental stresses and they respond to them in different ways. Ambient temperature is among the most important environmental cues that directly influence plant growth and yield. Research in recent years has revealed that epigenetic mechanisms play a key role in plants' response to temperature stress. Changes in gene expression evoked by stress signals follow post-translational histone modifications, DNA methylation, histone variant incorporation, and the action of chromatin remodeling factors and Polycomb group proteins. The majority of epigenetic modifications induced by temperature stress are reversible in nature; thus, chromatin returns to its previous state after the stress has passed. Some modifications seem stable, however, due presumably to so-called stress memory. Epigenetic modifications can be inherited through mitosis and meiosis. By dint of epigenetic memory, plants can more efficiently respond to future stressful conditions, thereby increasing their potential for environmental adaptation. Recognition of the epigenetic mechanisms that take part in plants' response to changes of ambient temperature will increase our understanding of adaptations to stress conditions.
Źródło:: Acta Biologica Cracoviensia. Series Botanica; 2012, 54, 1
0001-5296
Pojawia się w:: Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:: Biblioteka Nauki