Magnetic and Non-Magnetic Iron-Oxide Deposits in Basal Ganglia

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F13%3A33145995" target="_blank" >RIV/61989592:15310/13:33145995 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Magnetic and Non-Magnetic Iron-Oxide Deposits in Basal Ganglia
Original language description
A number of samples extracted from the human brain (basal ganglia) have been investigated by the scanning and transmission electron microscopy (SEM/TEM), SQUID magnetometry, and Mössbauer spectroscopy at ambient and cryogenic temperatures. A considerableamount of biomineralized iron-oxides was found in the extracellular matter. This material refers to perfect single crystals of the size 50 - 1000 nm and the TEM mode, after indexing, allows their identification as magnetite Fe3O4 and/or hematite ?- Fe2O3. The SQUID magnetometry reveals a classification of the samples into three groups: dominating diamagnetism (I), dominating paramagnetism (III), and the intermediate class (II). The magnetic response reflects an overall distribution of nanoparticles ofdifferent size and surface/bulk ratio. In class III the bifurcation point of the zero-field-cooled-magnetization and field-cooled-magnetization curves lies above the multicomponent contributions. The registered response is completely diff
Czech name
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Czech description
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Project
<a href="/en/project/EE2.3.20.0155" target="_blank" >EE2.3.20.0155: Research Team of the Regional Centre of Advanced Technologies and Materials Focusing on Non-traditional Experimental Techniques in Materials and Optical Research</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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