Temat: electron paramagnetic resonance - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Study on irradiated D-mannose isolated from cranberry
Autorzy:: Guzik, Grzegorz P.
Stachowicz, Wacław
Michalik, Jacek
Powiązania:: https://bibliotekanauki.pl/articles/147508.pdf
Data publikacji:: 2019
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: crystallite
electron paramagnetic resonance
EPR
irradiation
mannose
Opis:: The stable EPR signal produced by ionizing radiation in crystalline D-mannose (C6H12O6) and separated from cranberries (Vaccinium oxycoccus) was studied. The isothermal heating of irradiated sample at 95°C for 10 minutes (melting point of D-mannose is 132°C) resulted in the modifi cation and simplifi cation of the EPR signal involved. The isotropic quartet has been recognized in the EPR signal of heat-treated sample. Molecular structure of the isotropic quartet identifi ed in the complex EPR signal of D-mannose crystallite is proposed.
Źródło:: Nukleonika; 2019, 64, 4; 139-143
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Study on radiation-induced radicals giving rise to stable EPR signal suitable for the detection of irradiation in L-sorbose-containing fruits
Autorzy:: Guzik, G. P.
Stachowicz, W.
Powiązania:: https://bibliotekanauki.pl/articles/146498.pdf
Data publikacji:: 2016
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: sorbose
crystallite
electron paramagnetic resonance (EPR)
EPR
irradiation
Opis:: The stable and complex EPR signals produced by the action of ionizing radiation on crystalline L-sorbose (C6H12O6) separated from rowan berries (Sorbus aucuparia) were studied. Isothermal heating of the samples at the temperature close to the melting point of L-sorbose (140°C) results in the modification and simplification of the EPR signal involved. In the EPR signal of heated L-sorbose, the isotropic quartet was distinguished. In the differential spectrum obtained by subtraction of normalized spectra of unheated and heated L-sorbose, the isotropic doublet was identified in addition. The DFT fitting offers the probable assignment of the EPR signals to specifi c radical structures.
Źródło:: Nukleonika; 2016, 61, 4; 461-465
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

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

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Quantum magnetostriction effect resulting from the asymmetric structure of matter measured with EPR spectrometer
Autorzy:: Sikoń, Marek
Bidzinska, Ewa
Powiązania:: https://bibliotekanauki.pl/articles/2204518.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: atomic arm of action
non-paired electron/nucleon
polar rotation
Cosserat mechanics
EPR
electron paramagnetic resonance
elektron niesparowany
nukleon niesparowany
atomowe ramię działania
obrót biegunowy
mechanika Cosserata
elektronowy rezonans paramagnetyczny
Opis:: This paper explains the rotation and displacement as well as the couple and force stress in material with unpaired electrons/nucleons subjected to a magnetic field. This phenomenon is described in terms of quantum mechanics for nanoparticle and quantum statistical mechanics for loose nanomaterial. Quantitative calculations are carried out based on experimental data collected under the magnetic field of an EPR spectrometer from a set of nanocrystallites of hydrated copper sulfate.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 1; art. no. e144575
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "electron paramagnetic resonance" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język