- Tytuł:
- Influence of oxygen O2 on microwave saturation of EPR lines of plants carbonized at 650°c and potential application in medicine
- Autorzy:
-
Pilawa, B.
Bartłomiejczyk, S.
Krzesińska, M.
Pusz, S.
Zachariasz, J.
Wałach, W. - Powiązania:
- https://bibliotekanauki.pl/articles/284844.pdf
- Data publikacji:
- 2008
- Wydawca:
- Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
- Tematy:
-
karbonizacja roślin
elektroniczny rezonans paramagnetyczny
EPR
nasycenie mikrofalowe
centra paramagnetyczne
oksymetria
carbonized plants
electron paramagnetic resonance
microwave saturation
paramagnetic centers
oximetry - Opis:
- Electron paramagnetic resonance spectroscopy (EPR) was used to examination of spin-lattice relaxation in vascular plants carbonized at 650°C. Application of EPR method of continuous microwave signal saturation in medicine was proposed. The first derivative EPR spectra of pyrolysed bamboo and yucca were measured for samples in air and in vacuum. Influence of microwave power in the range 0.7-100 mW on amplitudes of EPR lines were evaluated. It was stated that amplitudes of the studied carbon materials increase with increasing of microwave power in the studied range. Saturation of EPR lines was not observed, so fast spin-lattice relaxation processes exist in the analyzed materials. Changes of EPR amplitudes for samples in air were slower than for evacuated samples. This effect may be used for determination of oxygen contents in the biological cells cultures and for analysis of optimal parameters of photodynamic therapy of cancer.
- Źródło:
-
Engineering of Biomaterials; 2008, 11, 73; 9-11
1429-7248 - Pojawia się w:
- Engineering of Biomaterials
- Dostawca treści:
- Biblioteka Nauki
Artykuł