Search Results - "Alegre, D"

Ammonia formation in N2/H2 plasmas on ITER-relevant plasma facing materials: Surface temperature and N2 plasma content effects by de Castro, A., Alegre, D., Tabarés, F.L.

“…Ammonia production in N2/H2 direct current glow discharge plasmas, with nitrogen concentrations from 1.5% to 33%, different wall materials (tungsten, stainless…”
Get full text

First liquid lithium limiter biasing experiments in the TJ-II stellarator by Tabarés, Francisco L., Oyarzabal, E., Tafalla, D., Martin-Rojo, A.B., Alegre, D., de Castro, A.

“…Experiments aimed at understanding the effects of material properties on plasma edge parameters in limiter biasing scenarios have been addressed in TJ-II under…”
Get full text

Physics and Technology Research for Liquid-Metal Divertor Development, Focused on a Tin-Capillary Porous System Solution, at the OLMAT High Heat-Flux Facility by de Castro, A., Oyarzábal, E., Alegre, D., Tafalla, D., González, M., McCarthy, K. J., Scholte, J. G. A., Morgan, T. W., Tabarés, F. L.

“…The operation of the Optimization of Liquid Metal Advanced Targets (OLMAT) facility began in April 2021 with the scientific objective of exposing liquid-metal…”
Get full text

Design and Testing of Advanced Liquid Metal Targets for DEMO Divertor: The OLMAT Project by Alegre, D., Oyarzabal, E., Tafalla, D., Liniers, M., Soleto, A., Tabarés, F. L.

“…In a future fusion reactor like DEMOnstration reactor (DEMO) one of the main concerns is the handling of the power exhaust from the plasma, especially at the…”
Get full text

A parametric study of helium retention in beryllium and its effect on deuterium retention by Alegre, D, Baldwin, M J, Simmonds, M, Nishijima, D, Hollmann, E M, Brezinsek, S, Doerner, R P

“…Beryllium samples have been exposed in the PISCES-B linear plasma device to conditions relevant to the International Thermonuclear Experimental Reactor (ITER)…”
Get full text

First thermal fatigue studies of tungsten armor for DEMO and ITER at the OLMAT High Heat Flux facility by Alegre, D., Tafalla, D., De Castro, A., González, M., Manchón, J.G., Tabarés, F.L., Hernández, T., Wirtz, M., Coenen, J.W., Mao, Y., Oyarzábal, E.

“…[Display omitted] •The capability of OLMAT High Heat Flux device for thermal fatigue testing is shown.•PoMA Wf/W has a larger threshold for fatigue damage than…”
Get full text

Influence of residence time and helium addition in the ammonia formation on tungsten walls in N2H2 glow discharge plasmas by A. de Castro, D. Alegre, F.L. Tabarés

“…The influence of the residence time for the active species and of the helium addition to the plasma in the ammonia formation in N2H2(He) Glow Discharge…”
Get full text

Plasma–wall interactions with nitrogen seeding in all-metal fusion devices: Formation of nitrides and ammonia by Oberkofler, Martin, Alegre, D., Aumayr, F., Brezinsek, S., Dittmar, T., Dobes, K., Douai, D., Drenik, A., Köppen, M., Kruezi, U., Linsmeier, Ch, Lungu, C.P., Meisl, G., Mozetic, M., Porosnicu, C., Rohde, V., Romanelli, S.G.

“…•Nitrogen chemistry is a potential issue for the use of N2 as seeding species to cool the edge of fusion plasmas.•Surface nitride formation on Be and W in…”
Get full text

In vitro Resistance Pattern of Selected Antifungal Azoles against Candida albicans Biofilms on Silicone Nasogastric Tube by Sumalapao, Derick Erl P., D. Salazar, Pauline Bridgette, D. Alegre, Frederico Martin, Villarante, Nelson R., Gloriani, Nina G.

“…Prolonged use of implanted medical devices has been linked with device-associated infections. Since enteral tube feeding is increasing worldwide, the present…”
Get full text

Susceptibility Profile of Candida albicans Biofilms on Polyvinyl Chloride Endotracheal Tube to Antifungal Azoles by Sumalapao, Derick Erl P., D. Alegre, Frederico Martin, D. Salazar, Pauline Bridgette, Villarante, Nelson R., Sia, Isidro C., Gloriani, Nina G.

“…One of the most prevalent causative organisms in human fungal infections is Candida albicans. The extensive utility of medical devices such as endotracheal…”
Get full text

The use of a general convected time derivative to compute the Reynolds stress tensor for a compressible turbulent flow by Alegre, D. M., Alves, F. S., Thompson, R. L., Mitre, J. F., Sampaio, L. E. B.

“…This paper deals with the turbulence closure problem associated with the Reynolds-averaged Navier–Stokes equations for compressible flows. Due to the known…”
Get full text

Thermo-oxidation of carbon codeposits and particles release during laser ablation in an oxygen atmosphere and its extrapolation to ITER codeposits by Alegre, D., Gasior, P., Kubkowska, M., Tabares, F.L.

“…•Suppression of codeposit redeposition around laser crater in oxygen atmosphere.•Deuterium emission during ablation is almost suppressed in oxygen after 5th…”
Get full text

Mass spectrometry analysis of the impurity content in N2 seeded discharges in JET-ILW by Drenik, A., Oberkofler, M., Alegre, D., Kruezi, U., Brezinsek, S., Mozetic, M., Nunes, I., Wischmeier, M., Giroud, C., Maddison, G., Reux, C.

“…Presented are the results of the first mass spectrometry study of impurities at JET with the ILW. Measurements are performed with the newly-installed RGA…”
Get full text

Cleaning of carbon materials from flat surfaces and castellation gaps by an atmospheric pressure plasma jet by Stancu, C., Alegre, D., Ionita, E.R., Mitu, B., Grisolia, C., Tabares, F.L., Dinescu, G.

“…•Atmospheric plasma jets operated with nitrogen, oxygen and their mixtures are used for cleaning surfaces of carbon residues•Efficient plasma jet cleaning of…”
Get full text

Influence of residence time and helium addition in the ammonia formation on tungsten walls in N2H2 glow discharge plasmas by de Castro, A., Alegre, D., Tabarés, F.L.

“…•Changes in the residence time for nitrogen (τN2τN2) from 25 to 50ms do not change significantly the ammonia formation yields but a higher value of 100ms…”
Get full text

Physisorption of ammonia on AISI 304L stainless steel at different surface temperature under high vacuum conditions by de Castro, A., Alegre, D., Tabarés, F.L.

“…•Quantification of the ammonia physisorption on AISI 304L steel at different surface temperatures (323-473K) has been carried out by means of mass…”
Get full text

Hepatitis A virus in urban sewage from two Mediterranean countries by PINTÓ, R. M., ALEGRE, D., DOMÍNGUEZ, A., EL-SENOUSY, W. M., SÁNCHEZ, G., VILLENA, C., COSTAFREDA, M. I., ARAGONÈS, L., BOSCH, A.

“…Molecular methods for the detection and typing of hepatitis A virus (HAV) strains in sewage were applied to determine its distribution in Cairo and Barcelona…”
Get full text

Oxidative removal of tokamak codeposits using NO2 and O2 by Alegre, D., Finlay, T.J., Davis, J.W., Haasz, A.A., Tabarés, F.L.

“…The rate of removal of deuterium from DIII-D codeposits has been directly compared for thermo-oxidations using NO2 and O2. At 286 and 350°C and pressures of 2…”
Get full text

Product analysis during the thermo-oxidation of amorphous deuterated hydrocarbon films with NO2 by Alegre, D., Tabares, F.L.

“…•Thermo-oxidation of hard a-C:H films with NO2 is effective even at 200 °C.•Water, CO and CO2 are the main products from thermo-oxidation with NO2 and O2.•Part…”
Get full text

Thermo-chemical fuel removal from porous materials by oxygen and nitrogen dioxide by Möller, S, Alegre, D, Kreter, A, Petersson, P, Esser, H G, Samm, U

“…Thermo-chemical removal (TCR), or baking in reactive gases, is a candidate method to control the co-deposit related tritium inventory in fusion devices. TCR…”
Get full text