Results 41 to 50 of about 5,031,543 (173)

Diffraction‐Free Natural Optical Skyrmions and Their Subwavelength Confinement Around Vortices

open access: yesLaser &Photonics Reviews, EarlyView.
ABSTRACT Diffraction causes waves to spread out as they propagate freely. The tighter the lateral confinement, the faster the spreading. Past research on how to suppress diffraction has been based on wave engineering and has led so far to idealized waves that, in real settings, eventually diffract.
Nilo Mata‐Cervera   +4 more
wiley   +1 more source

Niveles de vida y desarrollo económico en la España contemporánea: Una visión antropométrica [PDF]

open access: yes, 1994
Nuevos enfoques en la historia económica de España y de América Latina. Homenaje a Robert W. Fogel y Douglas C. North, Premios Nobel de Economía 1993Editada en la Universidad Carlos IIIEl artículo señala la importancia que tienen las medidas ...
Martínez Carrión, José Miguel
core   +2 more sources

The European honey buzzard (Pernis apivorus) as an ally for the control of the invasive yellow‐legged hornet (Vespa velutina nigrithorax)

open access: yesPest Management Science, Volume 81, Issue 4, Page 2237-2247, April 2025.
The predatory effect of the honey‐buzzard affects the reproductive performance of Asian‐hornet colonies, decreasing the density of workers over distance and time. The foraging distances of the honey‐buzzard concentrates within the first 2000 m from nest, which supports the results observed.
Jorge Ángel Martín‐Ávila   +3 more
wiley   +1 more source

Business Model and Sustainable Development Goals for an Innovative Agricultural Waste Management: Distributed Biogas Production

open access: yesSustainable Development, EarlyView.
ABSTRACT Technological progress and population growth have increased global pork demand; leading to a rise of methane emission from pig farming, a key contributor to climate change. Anaerobic digestion offers a sustainable solution by converting manure into biogas.
María‐Pilar Martínez‐Hernando   +5 more
wiley   +1 more source

Beneficios y costes fiscales del colonialismo: las remesa americanas a España, 1760-1814 [PDF]

open access: yes, 1997
Editada en la Fundación Empresa PúblicaSe intentan medir los beneficios y costes fiscales de la relación entre las colonias americanas y España en el período de 1760 a 1814 a partir de una serie de nuevas estimaciones de los montos anuales de las ...
Carlos Marichal, Marichal, Carlos
core   +1 more source

Sede de Madrid. Primer edificio. Propuesta de ascensores y montacargas de Julián Prinetti (Madrid, España)

open access: yes, 1889
Contiene: - Ascensores y montacargas hidráulicos núms. 1 a 6. Alzados (n.º 24). - Tubería, émbolo y caja de distribución; guía, soporte y cojinete; manivela (n.º 25).Dibujo en tinta negra, roja y azul sobre tela (núms.
Julián Prinetti (Madrid, España)
core   +1 more source

Anverso y reverso ladrillero

open access: yesAnales del Instituto de Arte Americano e Investigaciones Estéticas "Mario J. Buschiazzo"
El Colegio Mayor Argentino Nuestra Señora de Luján. Patrimonio cultural de la Ciudad Universitaria de Madrid. Mariné, N. (ed.). Madrid, España: Ediciones Complutense, 2024, 166 páginas.
Florencia Amado Silvero
doaj   +1 more source

Green Hydrogen as a Sustainability Transition in Spain: Motivations and Implications for Energy Governance

open access: yesSustainable Development, EarlyView.
ABSTRACT Green hydrogen has emerged as a strategic component of Spain's decarbonization agenda, with the country leveraging its renewable energy potential and industrial capabilities to align with the European Union's climate goals. Drawing on a multidimensional theoretical framework, this article examines the key drivers shaping Spain's green hydrogen
Zeynep Arıöz, Xira Ruiz‐Campillo
wiley   +1 more source

Sede de Madrid. Primer edificio. Propuesta de ascensores y montacargas de Bonaplata Hermanos (Madrid, España)

open access: yes, 1889
Contiene: - Alzado y planta (n.º 11).Dibujo en tinta negra y roja con aguadas sobre papel vegetal (n.º ...
Bonaplata Hermanos (Madrid, España)
core   +1 more source

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