Results 61 to 70 of about 2,833,162 (154)

Subnanometer Copper Clusters of Five Atoms on Titania Boosting CO2 Conversion to Methane

Small Structures, Volume 7, Issue 9, September 2026.
Supported five‐atom copper clusters (Cu5/TiO2) demonstrate exceptional catalytic performance for CO2 methanation, achieving 100% methane selectivity at 300 °C. Operando X‐ray absorption near‐edge structure (XANES) and DFT calculations reveal a preferred methoxy‐mediated pathway and reversible redox behavior.
Iria R. Arias, Khalil Jori, Shahana Huseyinova, Héctor J. L. Ordóñez, José A. Rodriguez, David Buceta, M. Arturo Lopez‐Quintela, Félix G. Requejo, José M. Ramallo‐López   +8 more
wiley   +1 more source

Oceanographic and climatic variability in the lower gulf of california: links with the tropics and north pacific

Ciencias Marinas, 2001
The links between climate and oceanography in the lower Gulf of California (LGC) and the observed physical variability in the open Pacific were studied on interannual to decadal timescales.
G Bernal, P Ripa, JC Herguera
doaj   +1 more source

Controls of bulk density and grain size on Stage 1 evaporation from packed sand columns

Vadose Zone Journal, Volume 25, Issue 5, September/October 2026.
Abstract Soil evaporation from the vadose zone is strongly controlled by the pore size distribution and hydraulic connectivity, both of which are altered by mechanical compaction. However, the effect of bulk density changes and its vertical distribution on Stage 1 evaporation in sandy systems remains insufficiently quantified. In this study, we combine
Jorge Renaud, Alberto de la Fuente, Francisco Suárez   +2 more
wiley   +1 more source

Comunicar : revista científica iberoamericana de comunicación y educación

, 1990
Resumen basado en el de la publicaciónAnálisis de las estrategias publicitarias basadas en la autoridad científica. Se analizan una serie de anuncios emitidos por cadenas de televisión generalistas españolas, en los que se detectan dos tipos de eslóganes
Moreno Castro, Carolina
core   +2 more sources

Estimación espectral de ondas oceánicas por máxima entropía

Geofísica Internacional, 1980
Se realiza un estudio estadístico de cuatro criterios para determinar el orden de un modelo autorregresivo (AR) a ser ajustado a datos de olas oceánicas.
H. G. Pena, R. O. Plaisted, F. J. Ocampo T., C. Nava B.   +3 more
doaj   +1 more source

Characterization of the Plumbing System Beneath Askja Caldera, Iceland, Revealed by Microgravity and Deformation Data During Uplift Between 2022 and 2023

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract In July 2021, an episode of uplift started at Askja caldera, Iceland, following over 50 years of subsidence. The initial inflation rate was approximately 700mm/yr $700\hspace*{.5em}\mathrm{m}\mathrm{m}/\mathrm{y}\mathrm{r}$, declining to 350mm/yr $350\hspace*{.5em}\mathrm{m}\mathrm{m}/\mathrm{y}\mathrm{r}$ within 1 month.
Josefa Sepúlveda‐Araya, Andrew Hooper, Elske van Dalfsen, Susanna K. Ebmeier, Michelle Parks, Freysteinn Sigmundsson, Yilin Yang, Milan Lazecký, Mathijs Koymans, Chiara Lanzi, Pedro Espín‐Bedón   +10 more
wiley   +1 more source

EDUCACIÓN A DISTANCIA: PRIMEROS PASOS HACIA EL PLANEAMIENTO EDUCATIVO EN EL ÁREA (FHUC, UNL) [PDF]

, 2011
La Facultad cuenta con propuestas educativas en la modalidad a distancia desde el año 2000. Estas se enmarcan en el Programa de Educación a Distancia de la Universidad y son cogestionadas entre un área central de la universidad y la unidad académica ...
Mántaras, Bárbara, Ojea, Nora
core  

Functionalized rare earth-doped nanoparticles for breast cancer nanodiagnostic using fluorescence and CT imaging

Journal of Nanobiotechnology, 2018
Background Breast cancer is the second leading cause of cancer death among women and represents 14% of death in women around the world. The standard diagnosis method for breast tumor is mammography, which is often related with false-negative results ...
Akhil Jain, Pierrick G. J. Fournier, Vladimir Mendoza-Lavaniegos, Prakhar Sengar, Fernando M. Guerra-Olvera, Enrique Iñiguez, Thomas G. Kretzschmar, Gustavo A. Hirata, Patricia Juárez   +8 more
doaj   +1 more source

Electron‐Driven Instabilities in Jupiter's Magnetodisc

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Thermal electrons in Jupiter's magnetodisc have been observed to be anisotropic with higher parallel temperature compared to perpendicular. In this work, we used previously‐derived electron properties (Sarkango et al., 2025, https://doi.org/10.1029/2025gl118209) to calculate electron β‖ ${\beta }_{\Vert }$ and compared the observed anisotropy ...
Y. Sarkango, A. H. Sulaiman, R. A. López, J. R. Szalay, R. Bandyopadhyay, F. Allegrini, R. W. Ebert, P. A. Damiano   +7 more
wiley   +1 more source

Plan Nacional de Educación Para Todos 2005-2015, Perú : hacia una educación de calidad con equidad [PDF]

, 2005
Hace un diagnóstico en relación con los seis objetivos de la Educación para Todos y expone el Plan de Acción del Foro Nacional de Educación para Todos, que tiene como mira la construcción de una propuesta de equidad y calidad educativa para nuestro país,
Perú. Ministerio de Educación
core   +1 more source