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Wyszukujesz frazę "liquid target" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Investigation of 99Mo potential production via UO2SO4 liquid target irradiation in a 5 MW nuclear research reactor
Autorzy:
Gholamzadeh, Z.
Mirvakili, S. M.
Davari, A.
Alizadeh, M.
Joz-Vaziri, A.
Powiązania:
https://bibliotekanauki.pl/articles/148499.pdf
Data publikacji:
2017
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
research reactor
99Mo production
uranyl sulphate
liquid target
MCNPX code
Opis:
The activation method for 99Mo production in comparison to fi ssionable target irradiation in research reactors is less preferable. Therefore, 99Mo yield using UO2SO4 samples was theoretically investigated. Computational results revealed admirable potential of the liquid samples for 99Mo production. Low-concentrated uranyl sulphate samples could easily be handled by the irradiation box. The sample geometry optimization improves thermal hydraulic conditions and production yield. The optimized geometry including only 0.12 g 235U produced 57Ci99Mo at end-of-irradiation (EOI) with a temperature peak of 72°C during the irradiation.
Źródło:
Nukleonika; 2017, 62, 1; 37-45
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the staff absorbed dose related to cyclotron operation and service in the production of 18F radiopharmaceuticals
Autorzy:
Sadat-Eshkevar, S. M.
Karimian, A.
Mirzaii, M.
Powiązania:
https://bibliotekanauki.pl/articles/146607.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
staff dosimetry
Monte Carlo (MC) simulation
18F production
cyclotron
induced radioactivity
liquid target
Opis:
Cyclotron accelerators are used to produce medical radioisotopes. One of the most important problems which may be encountered is malfunction of a part of the target or beam line which requires stopping of the bombardment and making a repair. The decision about doing the repair depends on the whole body dose rate in a target room. In this work, dosimetric conditions related to the production of 18FDG radiopharmaceutical were simulated by the Monte Carlo (MC) method. Independently, the dose rates were measured by 7 ICRU spherical body phantoms placed inside the liquid target room and the maze of the cyclotron. The radiation dose rate inside the target room depends on the duration of the bombardment and the time passed after stopping the bombardment. The correlation between duration of the bombardment and required time after stopping the bombardment to reach the absorbed dose rate less than 25 mi Sv/h, was calculated for the presence and absence of the irradiated target. The results showed that the repair can be started immediately after stopping of the proton bombardment only if the target has been ejected from the target room and the duration of bombardment has not taken more than 10 min.
Źródło:
Nukleonika; 2012, 57, 3; 407-410
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lessons from TARGET2 imbalances: The case for the ECB being a lender of last resort
Autorzy:
Chmielewski, Tomasz
Sławiński, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/557769.pdf
Data publikacji:
2019-06-28
Wydawca:
Uniwersytet Ekonomiczny w Poznaniu
Tematy:
liquid reserve and money creation
TARGET2 imbalances
Opis:
During the global banking crisis of 2007-2009 and the Eurozone sovereign debt crisis of 2010-2012 the so called ‘TARGET2 imbalances’ attracted considerable attention. Some economists interpreted them as a symptom of the ECB’s ‘stealth bailout’. The aim of the paper is to highlight that contrary to such claim, the emergence of TARGET2 imbalances reflected the benefits of having a mutual central bank within a monetary union which facilitated cross-border funding in spite of the global financial turbulence. The ECB’s liquidity loans to commercial banks in the Eurozone debtor countries shielded the Eurozone from a much deeper financial crisis than it actually occurred. The emergence of the TARGET 2 imbalances was actually only an accounting phenomenon resulting from the fact that these liquidity loans were technically extended by the debtor countries’ national central banks which are de facto (from the monetary policy perspective) ECB’s regional branches.
Źródło:
Economics and Business Review; 2019, 5 (19), 2
2392-1641
Pojawia się w:
Economics and Business Review
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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