1,721,034 research outputs found
MONO-DIMESIONAL MODEL VALIDATION OF FAST FILLING HYDROGEN TANKS WITH AND WITHOUT PRE-COOLING
No full textNumerical investigation of the gas concentration field during accidental release in a one vent small enclosure: Effect of vent configurations
No full textThe use of hydrogen as alternative fuel for ship propulsion: A case study of full and partial retrofitting of roll-on/roll-off vessels for short distance routes
No full textRoll-on/Roll-Off (Ro-Ro) vessels, including those without and with passenger accommodation Roll-on/roll-off
passenger (Ro-Pax), can be totally or partially retrofitted to reduce the greenhouse gas (GHG) emissions in
maritime transport not only during hoteling operation at the dock but also during service. This study is based on
data of the vessel routes connecting the Port of Piombino to the Elba Island in Italy. Three retrofitting scenarios
have been considered: replacement of the main and auxiliary engines with fuel cells (FC) (full retrofitting),
replacement of the auxiliary engines with FCs (partial retrofitting) and replacement of the auxiliary engines with
FCs and hoteling only with auxiliary engines for one specific vessel. The amount of hydrogen, the filling time and
the energy needed for production, compression and pre-cooling of hydrogen have been calculated for the
different scenarios
Evaluation by TEM of gastric epithelial cells apoptosis in normal mucosa and in H.pylori related chronic gastritis.
No full textCFX-10 and Relap5-3D Simulations of Coolant Mixing Phenomena in RPV of VVER-1000 Reactors
No full textThe present paper deals with numerical analyses of coolant mixing in the reactor
pressure vessel of a VVER-1000 reactor, performed with the ANSYS CFX-10 CFD code and
with the RELAP5-3D system code. In particular, the attention focused on the “swirl” effect
that has been observed to take place in the downcomer of such kind of reactor, with the aim of
assessing the capability of the codes to predict that effect, and to understand the reasons for its
occurrence. The results have been compared against experimental data from V1000CT-2
Benchmark
Rilevanza dell’apoptosi epiteliale nelle malattie gastrointestinali. Giornale di gastroenterologia 2003;8:1-21
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