Results 41 to 50 of about 9,206 (170)

Hydrogen Production via Steam Reforming: A Critical Analysis of MR and RMM Technologies

open access: yesMembranes, 2020
‘Hydrogen as the energy carrier of the future’ has been a topic discussed for decades and is today the subject of a new revival, especially driven by the investments in renewable electricity and the technological efforts done by high ...
Giovanni Franchi   +4 more
doaj   +1 more source

Guatemala ante el nuevo gobierno de Óscar Berger [PDF]

open access: yes, 2004
El próximo 14 de enero de 2004 Óscar Berger se convertirá en el sexto presidente de Guatemala desde la reinstauración de la democracia en 1986. El presente artículo trata de analizar los principales retos y dificultades a los que se enfrentará el nuevo ...
Núñez, Rogelio
core  

Greener Microplastics Removal: Progressive Replacement of Iron‐Based Coagulants with Sodium Alginate and Chitosan to Enhance Sustainability

open access: yesChemPlusChem, Volume 90, Issue 5, May 2025.
Delve into the use of natural coagulants to find sustainable alternatives for the removal of microplastics from wastewater. Chitosan and sodium alginate were used in our study to investigate the potential of a transition away from inorganic salts in wastewater treatment.
Marco Facchino   +7 more
wiley   +1 more source

El acueducto de Guadalajara y la obra de fray Pedro Antonio de Buzeta en España y Nueva España [PDF]

open access: yes, 2016
El acueducto de Guadalajara, construido por fray Pedro Antonio de Buzeta entre 1731 y 1741, fue una de las principales obras virreinales de la capital tapatía.
Recio Mir, Álvaro
core   +3 more sources

Hybrid Plasmonic Symmetry‐Protected Bound state in the Continuum Entering the Zeptomolar Biodetection Range

open access: yesSmall, Volume 21, Issue 10, March 12, 2025.
The origin of hybrid symmetry‐protected quasi‐bound states in the continuum (SP‐BIC) is explored by envisaging a new functional optical platform combining photonic/plasmonic modes in a non‐trivial 2D nanoarchitecture. The engineered building block sets the optical conditions to enter in the strong coupling regime, unlocking hybrid‐BIC states with high ...
Elena Clabassi   +15 more
wiley   +1 more source

Proyecto de estructuras de steel framing [PDF]

open access: yes, 2015
El objetivo de la presentación es mostrar las posibilidades estructurales del uso del sistema steel framing (LGSF) en España. En la ponencia se mostrarán dos ejemplos ejecutados en el año 2014 que pondrán de manifiesto los aspectos más ventajosos del ...
Cruz, Borja
core  

Effect of Bacille Calmette–Guérin vaccination on immune responses to SARS‐CoV‐2 and COVID‐19 vaccination

open access: yesClinical &Translational Immunology, Volume 14, Issue 1, 2025.
Bacille Calmette–Guérin (BCG), the vaccine for tuberculosis, has immunomodulatory effects that may underpin its off‐target effects on infectious disease risk and vaccine responses. This study used blood samples taken before and 28 days after COVID‐19 vaccinations (2‐dose primary course), from healthcare workers randomised to receive BCG vaccine or no ...
Nicole L Messina   +594 more
wiley   +1 more source

Transcutaneous Vagus Nerve Stimulation Combined with Robotic Rehabilitation Improves Upper Limb Function after Stroke

open access: yesNeural Plasticity, 2017
The efficacy of standard rehabilitative therapy for improving upper limb functions after stroke is limited; thus, alternative strategies are needed. Vagus nerve stimulation (VNS) paired with rehabilitation is a promising approach, but the invasiveness of
Fioravante Capone   +13 more
doaj   +1 more source

La Constitución apostólica «Ut sit» de 28-XI-1982. Acerca de su «Pars» narrativa. [PDF]

open access: yes, 1999
Material incluido en el volumen especial de la revista del Instituto Martín de Azpilcueta, Universidad de Navarra : Ius Canonicum (1999), en honor de Javier ...
Gómez-Iglesias-Casal, V. (Valentín)
core  

Mass Transfer Coefficient in Multi-Stage Reformer/Membrane Modules for Hydrogen Production

open access: yesMembranes, 2018
Hydrogen is a promising energy carrier, and is exploitable to extract energy from fossil fuels, biomasses, and intermittent renewable energy sources and its generation from fossil fuels, with CO2 separation at the source being one of the most promising ...
Diego Barba   +4 more
doaj   +1 more source

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