Results 71 to 80 of about 43,662 (180)

La metáfora de la casa, el jardín y el tinaco: conflictos sociales por la construcción de presas e infraestructura hidráulica en México 2014 [PDF]

open access: yes, 2015
A partir de la metáfora de la casa, el jardín y el tinaco se explica la complejidad que representan las distintas dimensiones de la administración y gestión del agua.
López-Ramírez, Mario E.
core  

Establishment patterns of saguaro cactus (Carnegiea gigantea) at the microsite scale help explain saguaro regeneration and distributions in heterogenous, regional habitats

open access: yesAmerican Journal of Botany, Volume 112, Issue 6, June 2025.
Abstract Premise Establishment of long‐lived perennial plants is a pivotal event that often leads to reproductive maturity. The population dynamics of the giant saguaro cactus (Carnegiea gigantea) have been investigated over large spatial areas, but establishment patterns have not been studied at the microsite (1 m) scale.
Peter B. Breslin   +6 more
wiley   +1 more source

Calidad del agua en el río Sonora: resumen y análisis de los datos del Fideicomiso Río Sonora, 2014-2019

open access: yesRevista de Salud Ambiental
Objetivo: Examinar la base de datos de monitoreo de calidad del agua del Fideicomiso Río Sonora durante el período 2014-2019. Metodología: En primer lugar, los valores reportados en el monitoreo se confrontaron con los límites máximos permitidos en la ...
Rolando E. Díaz-Caravantes   +3 more
doaj   +2 more sources

Gestión de riesgos y desastres socioambientales. El caso de la mina Buenavista del cobre de Cananea

open access: yesInvestigaciones Geográficas, 2017
En agosto de 2014, en la mina Buenavista del Cobre, ubicada en Cananea, Sonora, ocurrió un derrame de sulfato de cobre acidulado en el río Sonora. El derrame dio lugar a un desastre socioambiental que afectó a los habitantes y a los ecosistemas de la ...
Alejandra Toscana Aparicio   +1 more
doaj   +1 more source

The tonge into language: poetic talk in the limits of language [PDF]

open access: yes, 2015
Este artículo indaga la noción de habla poética desde la perspectiva de diversos pensadores contemporáneos (Martin Heidegger, Giorgio Agamben, Michel Foucault, Werner Hamacher, Daniel Heller-Roazen, entre otros).
Milone, María Gabriela
core  

Plant Responses to Anomalous Heat and Drought Events in the Sonoran Desert

open access: yesGlobal Change Biology, Volume 31, Issue 5, May 2025.
What are the impacts of region‐wide heat and drought events on desert vegetation? This multi‐scale assessment shows that columnar cacti and succulent trees show acute plant stress across the Sonoran Desert. The expected increased frequency of heat and drought events will likely have landscape‐wide impacts that could fundamentally reshape populations of
Benjamin T. Wilder   +10 more
wiley   +1 more source

Optoelectronic properties in CuO nanofibers, pure and doped with Mn

open access: yesResults in Physics
This research presents an optoelectronic study based on the dielectric function obtained from Kramers-Kronig analysis of CuO nanofibers (NFs), both pure (A) and 2.5 % Mn-doped (B), synthesized via the electrospinning method.
M. Piñón Espitia   +3 more
doaj   +1 more source

Vocabulario básico infantil español-amazige [Recurso electrónico] [PDF]

open access: yes, 2002
Características del sistema: PC-Windows 98 / Me / 2000 / XPTit.
Rico Martín, Ana María   +1 more
core   +1 more source

Water‐Soluble Curcumin Derivatives Including Aza‐Crown Ether Macrocycles as Enhancers of Their Cytotoxic Activity

open access: yesChemistry &Biodiversity, Volume 22, Issue 3, March 2025.
Abstract The synthesis of three novel curcumin derivative compounds, featuring aza‐crown ether macrocycles of various sizes (aza‐12‐crown‐4, aza‐15‐crown‐5, and aza‐18‐crown‐6), is described. The incorporation of these aza‐crown macrocycles significantly enhances their water solubility, positioning them as groundbreaking instances of curcumin ...
Antonino Arenaza‐Corona   +10 more
wiley   +1 more source

Evaluation of Antioxidant Capacity, Protective Effect on Human Erythrocytes and Phenolic Compound Identification in Two Varieties of Plum Fruit (Spondias spp.) by UPLC-MS

open access: yesMolecules, 2018
Plum edible part was used to obtained extracts by during a 4 h maceration process using three different solvents (ethanol, methanol and water) for the determination of total phenols and flavonoids, antioxidant capacity by (2,2′-azino-bis(3 ...
Karen L. Hernández-Ruiz   +8 more
doaj   +1 more source

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