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Wyświetlanie 1-3 z 3
Tytuł:
Nuclear fusion - energy for future
Autorzy:
Sadowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/147936.pdf
Data publikacji:
2005
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
fusion reaction
magnetic confinement
inertial confinement
RPI facility
SM magnetic trap
Opis:
This invited paper has been written on the 50th anniversary of the Institute of Nuclear Research (IBJ). The introduction describes basic nuclear fusion reactions and the appearance of high-temperature plasma, as well as different methods of the plasma generation and containment. The first part of the paper contains a concise description of the present status of research on controlled fusion and the construction of a thermonuclear reactor. The most important results of experiments oriented on magnetic confinement fusion (MCF) or inertial confinement fusion (ICF) are characterized. The second part of the paper presents a story of high-temperature plasma research carried out at IBJ (and now continued at IPJ) at Świerk. The main experimental facilities and scientific results, as obtained with those, are described. The most important achievements of IBJ (IPJ) researchers in the field of plasma physics and technology are indicated, and in particular: invention and development of the so-called RPI facilities producing intense plasma-ion streams, discovery and experimental study of a new configuration of a magnetic trap called the spherical multipole (SM) configuration, development of various plasma diagnostic techniques, and the optimization of different plasmafocus (PF) facilities.
Źródło:
Nukleonika; 2005, 50,suppl.3; 53-58
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antioxidant properties of wines produced in the Podkarpacie region
Autorzy:
Szterk, A.
Stefaniuk, I.
Cieniek, B.
Kuźma, M.
Powiązania:
https://bibliotekanauki.pl/articles/147112.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
electron spin resonance (ESR)
POBN spin trap
superoxide radial anion
Polish wines
Opis:
The wine is famous and popular drink having properties of reactive oxygen species scavenging. In this paper we study the antioxidant activity of the selected wines produced in the south-east region of Poland, in Subcarpathian Voivodeship, in the Podkarpacie region. We have concentrated our studies on the superoxide radical anion O2 •–. We have used electron spin resonance spectroscopy (ESR) as it is the best method for radical detection. The nitrone spin trap α-(4-pyridyl-1-oxide)-N-tert-butylnitrone (POBN) has been used in the experiment. The radical scavenging ability of wines were determined from the changing intensity of the spectrum in time.
Źródło:
Nukleonika; 2013, 58, 3; 447-450
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electron paramagnetic resonance (EPR) study of the short - living radicals generated thermally in phosphorylated maize starch with different amounts of amylose
Autorzy:
Bidzińska, E.
Dyrek, K.
Kruczała, K.
Szczygieł, J.
Wenda, E.
Błaszczak, W.
Fornal, J.
Powiązania:
https://bibliotekanauki.pl/articles/147482.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
carbon centred radicals
electron paramagnetic resonance (EPR) spectroscopy
PBN spin trap
starch phosphates
thermal treatment
Opis:
Quantitative electron paramagnetic resonance (EPR) spectroscopy was used for the determination of a number and properties of short-living radicals generated thermally in maize starch with various amounts of amylose. The EPR spectra of radical adducts with N-tert-butyl-α-phenylnitrone (PBN) spin trap reveal the presence of three types of radicals of mobility related with their localization in the zones of various degree of crystallinity. Hylon VII, which represents a matrix with a high content of amylose, offers better conditions for free rotation of radical species, whereas waxy maize, containing almost exclusively amylopectin, exhibits more restricted dynamics.
Źródło:
Nukleonika; 2013, 58, 3; 429-433
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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