Results 161 to 170 of about 449,495 (289)

Privatization versus Franchising Public Utilities. Are there any dominant alternative? [PDF]

open access: yes
Este artículo explora a través de un mismo modelo básico las características fundamentales que determinan si es socialmente preferible concesionar versus privatizar un servicio público con características monopólicas.
Eduardo Saavedra, Ronaldo Bruna
core  

Bioinspired Stabilization of Fluorescent Au@SiO2 Tracers for Multimodal Biological Imaging

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates a bioinspired stabilization strategy for fluorescent gold‐silica nanoparticles. Inspired by natural biosilica maturation, high‐temperature calcination transforms the silica shells, preventing dissolution in cell culture media and intracellular environments.
Wang Sik Lee   +5 more
wiley   +1 more source

LA INVERSIÓN EN ACTIVOS FIJOS REALES PRODUCTIVOS: INCENTIVOS Y OBSTÁCULOS TRIBUTARIOS [PDF]

open access: yes
RESUMENLas inversiones empresariales dirigidasa mejorar los procesos y a reducircostos, en ciertos casos, suscitan dificultadesde interpretación contablefrente a la jurídica impositiva. Estecaso describe la situación que afrontóSugar S.A.
ALONSO JAVIER AGUILERA MARTÍNEZ   +3 more
core   +1 more source

Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna

open access: yesAdvanced Functional Materials, EarlyView.
We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz   +9 more
wiley   +1 more source

Investments in health and mortality reduction to address population decline. [PDF]

open access: yesBull World Health Organ
Gietel-Basten S   +2 more
europepmc   +1 more source

[Call for emergency action to limit global temperature increases, restore biodiversity, and protect health]. [PDF]

open access: yesGac Sanit, 2021
Atwoli L   +18 more
europepmc   +1 more source

Inversiones e invertidos

open access: yes, 1972
"Este Artículo pertenece a la sección Opiniones de Mac Arra. "
openaire   +1 more source

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