Results 21 to 30 of about 7,523 (173)

Fabricación y caracterización de películas de dióxido de vanadio (vo2) depositadas por sputtering con corriente continua pulsada

Prospectiva, 2021
En el presente artículo se muestra cómo se crecieron y estudiaron películas delgadas de dióxido de vanadio sobre substratos de vidrio y zafiro mediante la técnica de “sputtering” con corriente continua (cc) pulsado.
Dixon David Salcedo Morillo, Wilmar Torné Sandoval, José Solorzano , Diana Suarez, Carlos Henríquez, Albeiro Cort{es   +5 more
doaj   +1 more source

Conservation implications of low contemporary connectivity along the Mid‐Atlantic Ridge in hydrothermal vent gastropods

Conservation Biology, Volume 40, Issue 4, August 2026.
Abstract Polymetallic sulfide deposits produced at hydrothermal vent fields are targets for mining exploitation along the Mid‐Atlantic Ridge, threatening the functioning and resilience of vent ecosystems that provide multiple ecosystem services. Knowledge about connectivity between vents will inform conservation practices.
E. Portanier, A. Tran Lu Y, F. Pradillon, C. Daguin‐Thiébaut, S. Ruault, P. Collins, E. Omnes, S. Fuchs, J. Carlsson, D. Jollivet, M. Matabos   +10 more
wiley   +1 more source

Moving in Cycles: Explaining the Failure of Militarization to Address Illegal Mining in Ghana

Politics &Policy, Volume 54, Issue 4, August 2026.
ABSTRACT Mining contributes to Ghana's economic growth but also imposes significant social costs—land dispossession and unemployment—which have fueled the rise of illegal mining (galamsey). Galamsey, which intensified during the commodity boom of the 2010s, provides livelihoods while simultaneously worsening environmental degradation and social ...
Sulemana Alhassan Saaka, Phil Faanu
wiley   +1 more source

ANÁLISIS DE ESTABILIDAD EN RELOJES ATÓMICOS POR MEDIO DE LA TÉCNICA VISTA COMÚN GPS

Anales (Asociación Física Argentina), 2016
Este trabajo presenta una evaluación de la estabilidad de tres relojes de cesio mantenidos por distintas instituciones argentinas: INTI (Instituto Nacional de Tecnología Industrial), ONBA (Observatorio Naval de Buenos Aires), e IGN (Instituto Geogra ...
D A Luna, D N Pérez, F Palacios, A Cifuentes   +3 more
doaj  

Environmental Stress Drives Plasticity in Sexual Bimaturism in the Black Soldier Fly (Hermetia illucens Linnaeus, 1758)

Entomologia Experimentalis et Applicata, Volume 174, Issue 7, Page 736-749, July 2026.
We measured the plasticity in sexual bimaturism (SBM; differences between sexes in the timing of sexual maturity) in the black soldier fly (BSF) by exposing larvae to nutrient availability and humidity stress. Our results show that SBM can range between protandry and protogyny depending on the environmental quality. Additionally, we found the degree of
Luis Rodrigo Arce‐Valdés, Hayat Mahdjoub, Jordi Vilanova, Carlos López‐Manzano, Rassim Khelifa   +4 more
wiley   +1 more source

Effects of selective harvest on antler size of white‐tailed deer in Texas, USA

Wildlife Monographs, Volume 222, Issue 1, June 2026.
We conducted 20 years of experiments on the selective harvest of white‐tailed deer by antler size, judged inferior, in 2 areas of South Texas, USA. Selective harvest increased the phenotypic antler size of older males in one study area but not the other. There was little evidence of evolution resulting from selective harvesting. Abstract There has been
Don A. Draeger, Charles A. DeYoung, Masahiro Ohnishi, David Navarro, Randy W. DeYoung, Bronson K. Strickland, David B. Wester, Alan T. Cain, David G. Hewitt   +8 more
wiley   +1 more source

Implementación de Hardware In The Loop para el Análisis de Escenarios de Control de Frecuencia en una Microrred Utilizando WAMS

Revista Técnica Energía, 2023
El presente articulo describe la metodología para la implementación y desarrollo de un sistema con funciones de control de frecuencia de una microrred en un entorno de simulación en tiempo real.
Carlos Lozada, David Panchi
doaj   +1 more source

Effects of Warming on Growth and Leaf Colonization by Litter Mat‐Forming Fungi in a Wet Tropical Forest in Puerto Rico

Biotropica, Volume 58, Issue 3, May 2026.
We took advantage of a long‐running field warming experiment, the Tropical Responses to Altered Climate Experiment (TRACE) located in the Luquillo Experimental Forest in Puerto Rico to evaluate the effects of +4°C warming on relative growth rates (RGR) and time to leaf colonization of a recently senesced leaf for drought‐tolerant species Marasmius ...
Ari E. Puentes, D. Jean Lodge, Deyaneira A. Ortiz‐Iglesias, Tatiana Barreto‐Vélez, Laura C. Rubio‐Lebrón, Hieu Chu, Christine S. O'Connell, Sasha C. Reed, Tana E. Wood   +8 more
wiley   +1 more source

Modelos de Respuesta de la Frecuencia para el Sistema Nacional Interconectado Ecuatoriano

Revista Técnica Energía
En el presente trabajo se presenta una metodología, basada en modelos de repuesta de la frecuencia, para estimar el valor mínimo o máximo -nadir- que alcanza la frecuencia cuando en el sistema eléctrico de potencia se presenta un desbalance generación –
Nelson Granda, Karen Paguanquiza
doaj   +1 more source

Threats to and management of Natura 2000 protected areas relative to agricultural practices

Conservation Biology, Volume 40, Issue 2, April 2026.
Abstract The Natura 2000 (N2K) network combines biodiversity protection and socioeconomic targets. Human activities, such as agricultural practices, can affect biodiversity in N2K sites in diverse ways. Limiting activities with negative impacts while enforcing land management that supports biodiversity is crucial for effective conservation.
Giorgio Zavattoni, Elie Gaget, Tyler Hallman, Ineta Kačergytė, Tomas Pärt, Diego Pavón‐Jordán, Thomas Sattler, Jon E. Brommer   +7 more
wiley   +1 more source