Results 41 to 50 of about 1,251,760 (219)

Permisos transables frente a la introducción de un combustible limpio: Estudio de caso para PM-10 y NOx en Santiago, Chile.

open access: yesEstudios de Economía, 2001
A partir de 1990 se introdujo en Santiago un sistema de compensación de emisiones para controlar las emisiones de PM-10 de fuentes fijas, en principio equivalente a un sistema de permisos de emisión (EPS), instrumento económico subóptimo.
Raúl O´Ryan, Rodrigo Bravo
doaj  

A Secure Cooperative Sensing Protocol for Cognitive Radio Networks [PDF]

open access: yes, 2010
Cognitive radio networks sense spectrum occupancy and manage themselves to operate in unused bands without disturbing licensed users. Spectrum sensing is more accurate if jointly performed by several reliable nodes. Even though cooperative sensing is an
Garrigues Olivella, Carles   +1 more
core  

Tuning the Twist by Molecular Design: A New Strategy for Hexabenzocoronene‐Containing Helical Twistacene

open access: yesChemistry – A European Journal, Volume 32, Issue 17, 5 May 2026.
An efficient Scholl–based strategy enables precise control of the C–C bond to access the first hexabenzocoronene–containing helical twistacene (NG2). The resulting nanographene shows pronounced helical distortion, high stability, enhanced solubility, and promising redox and optoelectronic properties.
Juan P. Mora‐Fuentes   +8 more
wiley   +1 more source

El precedente en Colombia

open access: yesRevista Derecho del Estado, 2015
El objetivo de este informe es determinar si las sentencias judiciales tienen el carácter de precedente en el sistema jurídico colombiano, y si es así, cuál es el fundamento, cuáles las características y cuál el alcance de este carácter. En este contexto
Carlos Bernal Pulido
doaj  

ALONSO GARCÍA, R. y ANDRÉS SÁENZ DE SANTA MARÍA, P. (2022). El sistema europeo de fuentes. Madrid: Fundación Coloquio Jurídico Europeo

open access: yesRevista de las Cortes Generales, 2022
Recensión de la obra: ALONSO GARCÍA, R. y ANDRÉS SÁENZ DE SANTA MARÍA, P. (2022). El sistema europeo de fuentes.
Roberto González de Zárate Lorente
doaj   +1 more source

Data gaps and heterogeneity limit our understanding of human–wildlife interactions: A continental study of Andean bears

open access: yesPeople and Nature, Volume 8, Issue 5, Page 1499-1519, May 2026.
Abstract The expansion and intensification of human activities have increased interactions between people and wildlife. Interactions involving bears and other large carnivores are complex and can lead to conflicts. Promoting positive coexistence requires managing information, which is not always available.
Roxana Rojas‐VeraPinto   +2 more
wiley   +1 more source

Revitalizing endangered mycocultural heritage in Mesoamerica: The case of the Tlahuica‐Pjiekakjoo culture

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 3, Page 907-923, May 2026.
The preservation and revitalization of mycocultural heritage, developed over centuries of human‐mushroom interaction, contributes to safeguarding both natural ecosystems and the promotion of sustainable rural development, one of the biggest global challenges currently faced by humankind.
Elisette Ramírez‐Carbajal   +8 more
wiley   +1 more source

Landscape features predict broad‐scale seed rain patterns across fragments of the Brazilian Atlantic Forest

open access: yesJournal of Ecology, Volume 114, Issue 5, May 2026.
Along with precipitation, forest cover emerges as a fundamental driver of alpha and beta diversity in the seed rain. This highlights the role of habitat amount at the landscape level over patch‐level features, like patch size, for seed dispersal. However, increased seed density can be related to higher dispersal rates in forest borders.
Luís Felipe Daibes   +63 more
wiley   +1 more source

The imbalances in the distribution of resources of the Autonomous Communities. A Global Perspective [PDF]

open access: yes, 2016
La financiación autonómica puede ser considerada un macro problema de distribución interterritorial de ingresos, en el que se combinan asignaciones de fuentes tributarias y transferencias intergubernamentales buscando equilibrios presupuestarios que ...
Atienza Montero, Pedro   +1 more
core  

Environmental governance in the face of collapse: The case of Acapulco, Mexico, between tourist splendour and ecological risk

open access: yesEcological Solutions and Evidence, Volume 7, Issue 2, April/June 2026.
Underwater clean‐up efforts in Acapulco Bay reveal the visible consequences of chronic coastal pollution. This study shows how Environmental Risk Assessments (ERAs) can integrate scientific evidence, regulatory frameworks and practitioner experience to identify pollution sources and guide more effective coastal governance in cities of the Global South.
Sinuhé Hernández Márquez   +13 more
wiley   +1 more source

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