Results 61 to 70 of about 1,517 (160)

Late Cretaceous and Early Paleogene Fluid Circulation and Microbial Activity in Deep Fracture Networks of the Precambrian Basement of Western Greenland

open access: yesGeochemistry, Geophysics, Geosystems, Volume 25, Issue 9, September 2024.
Abstract Deep fracture‐hosted fluids of Precambrian bedrock cratons are relatively stagnant over long time spans compared to near‐surface systems. However, episodic events, such as fracture reactivations, transgressions, and deglaciations, may introduce dilute water, replacing, and mixing with the deep continental brines, thereby sparking microbial ...
H. Drake   +9 more
wiley   +1 more source

Reflexiones acerca del impacto de la pandemia de COVID-19 en la educación de los pueblos indígenas de Argentina (NEA)

open access: yesDesidades, 2020
In Argentina, the suspension of classes at all educational levels was established on March 16th for 14 days, then extended by the presidential decree that established the Preventive and Compulsory Social Isolation (ASPO) as a health measure against the ...
Ana Carolina Hecht   +2 more
doaj  

Distributed auto disturbances rejection resilient control of permanent magnetic maglev trains based on the optimized deep deterministic policy gradient algorithm

open access: yesIET Control Theory &Applications, Volume 18, Issue 11, Page 1383-1397, July 2024.
To address the problem that the time‐varying external disturbances and the uncertainty system model leads to poor cooperative control effect for virtual coupling of permanent magnetic maglev trains, we propose a new effective distributed auto disturbances rejection resilient controller based on APSO‐DDPG. The simulation results show that as compared to
Zhen‐yu Guo, Zhong‐qi Li
wiley   +1 more source

Calculations of fluid-mineral equilibria in the Aspo Hard Rock Laboratory [PDF]

open access: yes, 1995
The purpose of this report is to evaluate the utility of the EQ3/6 geochemical codes in describing mineral-fluid equilibria in the low temperature (
openaire   +2 more sources

Significance of Low‐Velocity Zones on Solute Retention in Rough Fractures

open access: yesWater Resources Research, Volume 60, Issue 4, April 2024.
Abstract Natural fractures are characterized by high internal heterogeneity. This internal variability is the cause of flow channeling, which in turn leads to contaminant transport taking place primarily along the high‐velocity channels. Mass exchange between the high‐velocity channels and the low‐velocity zones has the potential to enhance contaminant
Jordi Sanglas   +6 more
wiley   +1 more source

Publicidades alimentarias en Argentina: discursos, estereotipos y diferencia sexual

open access: yesEstudios sobre las Culturas Contemporáneas, 2022
El presente artículo pretende abordar la concepción generalizada sobre lo masculino y lo femenino que subyace en algunas  publicidades alimentarias, surgidas en Argentina durante el período del aislamiento/distanciamiento social preventivo y obligatorio 
Celeste Ambrosi
doaj  

ASPO: Adaptive Sentence-Level Preference Optimization for Fine-Grained Multimodal Reasoning

open access: yesFindings of the Association for Computational Linguistics: ACL 2025
Accepted by ACL 2025 ...
Yeyuan Wang   +6 more
openaire   +3 more sources

La Configuración de nuestro trabajo docente en tiempos de pandemia.

open access: yesEncuentro Educativo, 2021
La experiencia que compartimos se da en el marco del Proyecto de Investigación: Misiones: Investigación Educativa y Trabajo en Red. Acción, Reflexión, Acción radicado en la FCEQyN, UNaM.
Alicia Mónica Oudin   +5 more
doaj  

A Precision Monitoring Method and Control Strategy for a Proton Exchange Membrane Fuel Cell in the Power Generation System of the Antarctic Space Physics Observatory

open access: yesEnergies
Based on the requirement of the Antarctic Space Physics Observatory (ASPO) for a clean energy supply, this study proposes a clean energy generation system incorporating proton exchange membrane fuel cells (PEMFCs) within a “wind–solar–hydrogen-storage ...
Guangyu Zuo   +3 more
doaj   +1 more source

Las prácticas de la enseñanza en Historia mediadas por las plataformas virtuales en el contexto de Aislamiento Social, Preventivo y Obligatorio durante el ciclo lectivo 2020. Estudio de caso

open access: yesHistoria Regional, 2021
Esta investigación está centrada principalmente en un enfoque didáctico, abordado desde la perspectiva de la teoría crítica, teniendo en cuenta el contexto mundial por Covid-19. Puntualmente trata de responder al interrogante: ¿Cómo afecta el contexto de
Sabrina Bonifacino, Antonella Mangeón
doaj  

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