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Wyszukujesz frazę "Michalik, Jacek" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
European inter-comparison studies as a tool for perfecting irradiated food detection methods
Autorzy:
Guzik, Grzegorz Piotr
Michalik, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/2055676.pdf
Data publikacji:
2021
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
detection
inter-comparison tests
EPR
irradiated food
PSL
TL
Opis:
In this paper, we present the results of inter-comparison studies on identification of irradiated food carried out by the leading European laboratories from 1991 to 2018. In 1990s, the Federal Institute for Health Protection of Consumers and Veterinary Medicine in Germany played the leading role in the organization of the inter-laboratory tests on this subject. At the beginning of the present century, the Spanish Agency for Food Safety and Nutrition and Food National Spanish Centre took over this role. In total, 47 international tests were carried out in which nearly 500 samples of alimentary products were analysed in 37 laboratories from 14 European countries. The tests were aimed at proving the reliability of analytical methods – thermoluminescence (TL), photostimulated luminescence (PSL), and electron paramagnetic resonance (EPR) spectroscopy – for identification of specific irradiated food products and to control the analytical skills and experience of participating laboratories. The results made possible a discussion on why some irradiated food samples are more difficult for identification. In general, the tests showed that TL measurements of products such as herbs, nuts, peppers, and raisins, and EPR studies of fish and chicken bones, fresh strawberries, and dried fruits could be used as reliable control methods. The challenge that control laboratories are facing now, is related to the identifi cation of complex food products such as diet supplements or biopharmaceuticals, in which only some additives are irradiated.
Źródło:
Nukleonika; 2021, 66, 3; 91--97
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of selected contemporary threats to gas infrastructure
Autorzy:
Pilarski, Grzegorz
Michalik, Jacek
Wyszyński, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/27309806.pdf
Data publikacji:
2023
Wydawca:
Towarzystwo Wiedzy Obronnej
Tematy:
critical infrastructure
gas infrastructure
energy industry
national security
infrastruktura krytyczna
infrastruktura gazowa
przemysł energetyczny
bezpieczeństwo narodowe
Opis:
Nowadays, companies are increasingly using a risk-based approach to achieve their business goals. A key element of this approach is the identification of threats that may materialize and affect the functioning of the company. Following the example of the gas sector, with the gas infrastructure as the subject of research, the authors presented selected contemporary gas network threats that may occur within the mentioned sector.
Źródło:
Wiedza Obronna; 2023, 2
0209-0031
2658-0829
Pojawia się w:
Wiedza Obronna
Dostawca treści:
Biblioteka Nauki
Artykuł
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
    Wyświetlanie 1-3 z 3

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