Calderón
Calderón es el repositorio institucional del CUD (Centro Universitario de la Defensa) en la ENM (Escuela Naval Militar). El CUD, siguiendo las iniciativas Open Access, pone a disposición de la Comunidad este repositorio donde se da acceso a la producción investigadora, principalmente en forma de Trabajos Fin de Grado, pero también Trabajos Fin de Máster, y otros artículos de investigación publicados por el personal docente e investigador del Centro.
Algunos de los documentos publicados en este repositorio tienen restringido el acceso. Para solicitar su consulta, o para plantear cualquier duda respecto a los contenidos de este respositorio, puede:
- Enviar un correo electrónico a biblioteca@cud.uvigo.es.
- Llamar por teléfono al 986 80 49 89.
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DESEI+D Congreso Nacional de i+d en Defensa y SeguridadInvestigación Comunidad que acoge aquellos artículos de investigación publicados por los docentes del CUD-ENM.Recursos educativos Comunidad en la que se alojan recursos educativos vinculados a la docencia en el CUD-ENMTrabajos Fin de Grado Comunidad en donde se recopilan las memorias de los Trabajos de fin de Grado en Ingeniería Mecánica del CUD-ENMTrabajos Fin de Máster Comunidad en donde se recopilan las memorias/resúmenes presentados como trabajos fin de máster impartidos en el CUD-ENM
Envíos recientes
Ítem
Locally conformally flat weakly-Einstein manyfolds
(Archiv der Mathematik, 2018-11-21) García-Río, Eduardo; Haji-Badali, Ali; Mariño-Villar, Rodrigo; Vázquez-Abal, M. Elena
It is shown that locally conformally flat weakly-Einstein manifolds are either locally symmetric, and hence a product Nm1(c) × Nm2(−c), or other-wise they are locally some specific warped product metrics I ×f N(c). As an
application we classify weakly-Einstein hypersurfaces in the Euclidean space.
Ítem
Beamforming techniques for passive radar: an overview
(MDPI (Multidisciplinary Digital Publishing Institute), 2023-03-24) Núñez-Ortuño, José M.; González-Coma, José P.; Nocelo López, Rubén; Troncoso-Pastoriza, Francisco; Álvarez-Hernández, María
Passive radar is an interesting approach in the context of non-cooperative target detection. Because the signal source takes advantage of the so-called illuminator of opportunity (IoO), the deployed system is silent, allowing the operator cheap, portable, and practically undetectable deployments. These systems match perfectly with the use of antenna arrays to take advantage of the additional gains provided by the coherent combination of the signals received at each element. To obtain these benefits, linear processing methods are required to enhance the system’s performance. In this work, we summarize the main beamforming methods in the literature to provide a clear picture of the current state of the art. Next, we perform an analysis of the benefits and drawbacks and explore the chance of increasing the number of antenna elements. Finally, we identify the major challenges to be addressed by researchers in the future.
Ítem
Bioethanol production from industrial algae waste
(Waste management, 2019) Alfonsín, Víctor; Maceiras, Rocío; Gutiérrez, Carlos
This paper presents a study carried out to determine the
feasibility to obtain bioethanol from an industrial algae waste. The
influence of some parameters on acid hydrolysis was studied. The results
indicated that the overall hydrolysis ability is a function of the
combined action of acid concentration, temperature and reaction time. The
hydrolysates with higher amount of reducing sugars were used for
ethanolic fermentation using S. Cerevisiae. The highest bioethanol yield
11.6 gEtOH/galgae was obtained at 70 min, a sulphuric acid concentration
of 9% wt. and acid/dried algae ratio of 7. The present study showed that
the industrial waste of Euchema Spinosum contains carbohydrates that can
be converted into bioethanol with an efficiency of 75%. Moreover, the
potential of the residue after acid hydrolysis process as sustainable
solid fuel regarding its properties was analysed. The results were
compared with those obtained from the literature and discussed according
to international standards.
Ítem
Transforming Wastewater into Biofuel: Nutrient Removal and Biomass Generation with Chlorella vulgaris
(Energies, 2024-09-30) Salgueiro, José Luis; Pérez-Rial, Leticia; Maceiras, Rocío; Sánchez, Ángel; Cancela, Ángeles
This study investigates the potential of Chlorella vulgaris for nutrient removal and biomass
production in synthetic wastewater. The experiments were conducted in 2 L photobioreactors under
controlled aeration, agitation, and lighting conditions for 19 days. Despite a moderate growth rate
(0.137 d−1), C. vulgaris achieved efficient pollutant removal, with 97% of nitrate, 90% of nitrite, and
90.6% of COD eliminated. Additionally, the biomass was processed to extract fatty acids, yielding
a 20% extraction rate, indicating its potential as a biofuel feedstock. These results demonstrate C.
vulgaris’s dual function in wastewater remediation and biofuel production, presenting a sustainable
and economically viable approach to addressing environmental challenges.
Ítem
C02 Capture via Adsorption Using Silica Gel
(European Journal of Sustainable Development, 2024-10-01) Pérez-Rial, Leticia; Alfonsín, Víctor; Maceiras, Rocío; Feijoo, Jorge; Vallejo, Javier P.
This paper investigates the potential of silica gel as an effective adsorbent for C02 capture. The
study explores the adsorption mechanisms, the efficiency of C02 upta.ke, and sorne factors influencing
the adsorption capacity of silica gel.The experimental results demonstrate the significant
potential of silica gel for C02 adsorption under various conditions. Toe adsorption capacity was
found to be highly dependent on parameters such as gas flow rate and the particle size of silica
gel. The findings suggest that ,vith optimized conditions, silica gel could be a viable material
for reducing atmospheric C02 levels. This research contributes to the development of sustainable
and efficient technologies for mitigating climate change through carbon dioxide capture and
storage.