S-factor

S-factor

Pre-Writing Step

Published in Marialuisa Aliotta, Mastering Academic Writing in the Sciences, 2018

Early investigations of the 17 $ ^{17} $ O(p,γ $ \gamma $ )18 $ ^{18} $ F reaction cross section had reported a constant direct capture (DC) contribution to the S-factor (SDC $ _\mathrm{DC} $ ) in agreement with the four lowest data points measured by Rolfs (1973) at energies E=280-425keV $ E=280-425~\mathrm{keV} $ by prompt γ $ \gamma $ -ray detection.

Simulation-based analysis method for damage survivability of passenger ships

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Journal Information

Published in Ship Technology Research, 2019

Pekka Ruponen, Daniel Lindroth, Anna-Lea Routi, Marja Aartovaara

The recommended limit of capsizing by the International Towing Tank Conference is 30°, ITTC (2017). Additionally, if the 3-minute average exceeds 20°, the ship is considered as capsized. Since the progressive flooding and steady-state stages can be long, it is also important to ensure that the ship can withstand external moments, e.g. due to wind, without capsizing. In this study, a constant wind velocity of 14 m/s is considered, as in the wind moment for s-factor calculation in SOLAS. The wind direction is selected so that it is increasing the steady heeling angle. If heeling due to wind moment exceeds 20°, the risk of capsizing is notable, and hence the s-factor for the case is nullified.

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Simulation-based analysis method for damage survivability of passenger ships