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194 results on '"Mielcarek S"'

1. Investigation of phonons and magnons in [Ni80Fe20/Au/Co/Au]N multilayers

Author

Zdunek, M., Shekhar, S., Mielcarek, S., and Trzaskowska, A.

Subjects
Condensed Matter - Materials Science, Physics - Applied Physics
Abstract

The interaction between phonons and magnons is a widely developing topic, especially in the field of acoustic spintronics. To discuss this interaction, it is necessary to observe two different waves (acoustic and spin waves) with the same frequency and wavelength. In the Ni80Fe20/Au/Co/Au system deposited on a silicon substrate, we observe the interaction between spin waves and surface acoustic waves using Brillouin light scattering spectroscopy. As a result, we can selectively control (activate or deactivate) the magnetoelastic interaction between the fundamental spin wave mode and surface acoustic waves by adjusting the magnetostrictive layer thickness in the multilayer. We demonstrate that by adjusting the number of layers in a multilayer structure, we can precisely control the dispersion of surface acoustic waves, with minimal impact on the fundamental spin wave mode

Published
2024

5. The studies on phonons and magnons in (Ni80Fe20/Au/Co/Au) multilayers of different number of repetitions

Author

Zdunek, M., Trzaskowska, A., Kłos, J. W., Babu, N. K. P., and Mielcarek, S.

Subjects
Condensed Matter - Materials Science
Abstract

In Ni80Fe20/Au/Co/Au deposited on silicon substrate the interaction between spin waves and surface acoustic waves is observed by Brillion light scattering spectroscopy. We show that by changing the number of receptions in the multilayer we can tune the dispersion of surface acoustic waves (SAWs) not affecting significantly fundamentals spin wave (SW) mode. As a result, we can control (activate or deactivate) the magnetoelastic interaction between fundamental SW mode and SAWs by the thickness of the magnetostrictive multilayer., Comment: rejected from Journal

Published
2021

23. Peruvian Maca (Lepidium peruvianum): (II) Phytochemical Profiles of Four Prime Maca Phenotypes Grown in Two Geographically-Distant Locations

Author

Meissner, H. O., Mscisz, A., Piatkowska, E., Marek Baraniak, Mielcarek, S., Kedzia, B., Holderna-Kedzia, E., and Pisulewski, P.

Subjects
Glucosinolates, Original Article, Four phenotypes, hypocotyl colours, Lepidium peruvianum, HPLC fingerprint, Maca
Abstract

Peruvian Maca crops (Lepidium peruvianum), grown in two geographically-distant cultivation sites located at similar altitudes in the highlands of the Peruvian Andes (Junin at 4,200 m a.s.l. and Ancash 4,150 m a.s.l.), were used in the study. Four prime Maca phenotypes, distinguished by hypocotyl colours labelled as “Yellow”, “Purple”, “Red” and “Black” were selected to determine distribution in levels and corresponding ratios between individual Glucosinolates (Glucotropaeolin and m-methylglucotropaeolin) in an attempt to identify four Peruvian Maca phenotypes from analyses of powdered hypocotyls. There were highly significant differences (P

Published
2016

24. One-dimensional modulation of the stripe in a surface phononic lattice: The effect on propagation of surface waves.

Author

Trzaskowska, A., Mielcarek, S., and Wiesner, M.

Subjects
*SURFACE phonons, *SURFACE waves (Fluids), *LIGHT scattering, *SUBSTRATES (Materials science), *NANOSTRUCTURED materials
Abstract

Brillouin light scattering was applied for the investigation of surface waves propagation in phononic materials made of a silicon substrate loaded with a permalloy layer and a modulated nanostructure of aluminum stripes. The results revealed the impact of one-dimensional modulation of the surface phononic crystal on the propagation of surface acoustic waves along the modulated aluminum stripes. The dispersion relation was experimentally and theoretically investigated. The new modes propagating in the investigated structure are localized in the stripes and are defined. [ABSTRACT FROM AUTHOR]

Published
2014
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25. Peruvian Maca (Lepidium peruvianum): (I) Phytochemical and Genetic Differences in Three Maca Phenotypes

Author

Henry Meissner, Mscisz, A., Mrozikiewicz, M., Baraniak, M., Mielcarek, S., Kedzia, B., Piatkowska, E., J�lkowska, J., and Pisulewski, P.

Subjects
Phenotypes, parasitic diseases, Glucosinolates, HPLC profiles, Original Article, geographic locations, Hypocotyl colours, Peruvian Maca
Abstract

Glucosinolates were previously reported as physiologically-important constituents present in Peruvian Maca (Lepidium peruvianum Chacon) and linked to various therapeutic functions of differently-colored Peruvian Maca hypocotyls. In two separate Trials, three colours of Maca hypocotyls "Black", "Red" and "Yellow" (termed "Maca phenotypes"), were selected from mixed crops of Peruvian Maca for laboratory studies as fresh and after being dried. Individual Maca phenotypes were cultivated in the highlands of the Peruvian Andes at 4,200m a.s.l. (Junin and Ninacaca). Glucosinolate levels, chromatographic HPLC profiles and DNA variability in the investigated Maca phenotypes are presented. Genotypic profiles were determined by the ISSR-PCR and RAPD techniques. Compared to the Black and Red phenotypes, the Yellow phenotype contained much lower Glucosinolate levels measured against Glucotropaeolin and m-methoxy-glucotropaeolin standards, and exhibited different RAPD and ISSR-PCR reactions. The Red Maca phenotype showed the highest concentrations of Glucosinolates as compared to the Black and Yellow Maca. It appears that the traditional system used by natives of the Peruvian Andean highlands in preparing Maca as a vegetable dish (boiling dried Maca after soaking in water), to supplement their daily meals, is as effective as laboratory methods - for extracting Glucosinolates, which are considered to be one of the key bioactive constituents responsible for therapeutic functions of Peruvian Maca phenotypes. It is reasonable to assume that the HPLC and DNA techniques combined, or separately, may assist in determining ID and "Fingerprints" identifying individual Peruvian Maca phenotypes, hence confirming the authenticity of marketable Maca products. The above assumptions warrant further laboratory testing.

Published
2015

33. Involvement of the different extracts from roots of Salvia miltiorrhiza Bunge on acute hypobaric hypoxia-induced cardiovascular effects in rats – preliminary report

Author

Buchwald, W., primary, Mikołajczak, P.Ł., additional, Krajewska-Patan, A., additional, Dreger, M., additional, Górska-Paukszta, M., additional, Szulc, M., additional, Polcyn, P., additional, Pioruńska-Mikołajczak, A., additional, Mielcarek, S., additional, Czerny, B., additional, Mrozikiewicz, P.M., additional, and Bobkiewicz-Kozłowska, T., additional

Published
2012
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