Results 51 to 60 of about 12,776,695 (181)

Tertiary‐Ozone‐Maximum‐Like Mesospheric Ozone Increases Driven by Solar Eclipses: Sensitivity Experiments on WACCM‐X

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Solar eclipses offer natural experiments to isolate the photochemical response of mesospheric ozone to solar radiation. Using the WACCM‐X model, we performed mechanism‐oriented sensitivity experiments for the 14 December 2020 eclipse to quantify the tertiary‐ozone‐maximum‐like (TOM‐like) response.
T. Yang, T. Nagahama, A. Mizuno, T. Dang, J. Lei, Joseph M. McInerney   +5 more
wiley   +1 more source

Selección de Píxel Semilla mediante Wavelets para Crecimiento por Regiones Difuso (Selection of Seed Pixel Through Wavelets for Fuzzy Region Growing) [PDF]

GECONTEC: Revista Internacional de Gestión del Conocimiento y la Tecnología, 2015
RESUMEN  El análisis de masas y tumores en mamografía es un problema difícil porque los signos del cáncer pueden ser mínimos o estar superpuestos en el tejido. Las técnicas de procesamiento de imágenes pueden mejorar el diagnóstico reduciendo los costos.
Damián Valdés Santiago, Daniel Mesejo León, Ángela León Mecías   +2 more
doaj   +3 more sources

A Modified Multilevel Tracking Scheme for the Detection of Sunspot Umbral Dots

The Astrophysical Journal
Umbral dots (UDs) are small-scale convective intrusions in the umbral core of sunspots and pores. Different methods have been used in the past to determine the physical properties of UDs.
Rohan Eugene Louis, Amit Chaturvedi
doaj   +1 more source

Uncovering correlates of decline and critical refuges for a threatened terrestrial mammal

Conservation Biology, Volume 40, Issue 4, August 2026.
Abstract Globally, the geographic ranges of numerous species are contracting. Identifying spatiotemporal patterns of threat impact can illuminate why species decline in some parts of their range but persist in others. We developed a correlative approach to identify species’ response thresholds and locate ecological refuge areas associated with ...
Natalya M. Maitz, Michelle S. Ward, Jonathan R. Rhodes, Ben C. Scheele, Hugh P. Possingham, Diana O. Fisher   +5 more
wiley   +1 more source

Cumulative heatwave stress disrupts thermal homeostasis and plumage structure in a Mediterranean passerine

Functional Ecology, Volume 40, Issue 7, Page 1960-1978, July 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Heatwaves are becoming increasingly frequent across the Mediterranean and pose critical challenges for small passerines, yet the physiological and morphological limits to their resilience remain poorly understood.
Erick González‐Medina, Núria Playà‐Montmany, Julián Cabello‐Vergel, Marta Precioso, Deseada Parejo, Auxiliadora Villegas, José A. Masero   +6 more
wiley   +1 more source

Adivinada Pilar [PDF]

, 1998
Umbral, F. (1998). Adivinada Pilar. Nosferatu. Revista de cine. (28):80-81.
Umbral, Francisco
core  

Policy Windows in an Authoritarian System: How Alignment, Leadership Signals, and Disasters Enabled Policy Entrepreneurship in China's Poverty Alleviation

Review of Policy Research, Volume 43, Issue 4, July 2026.
ABSTRACT China's poverty alleviation campaign is significant. Over the past four decades, the number of people in China living below the international extreme‐poverty line fell by close to 800 million, accounting for nearly three‐quarters of the global reduction in extreme poverty.
Zhiqi Xu, Wil Hout
wiley   +1 more source

Umbral chromospheric fine structure and umbral flashes modelled as one: The corrugated umbra

, 2020
Context. The chromosphere of the umbra of sunspots features an assortment of dynamic fine structures that are poorly understood and often studied separately. Small-scale umbral brightenings (SSUBs), umbral microjets, spikes or short dynamic fibrils (SDFs)
Rouppe van der Voort, Luc, Mathioudakis, Mihalis, Chris J. Nelson, Mihalis Mathioudakis, Nelson, Chris J., de Jorge Henriques, Vasco Manuel, Luc H. M. Rouppe van der Voort, Vasco M. J. Henriques   +7 more
core   +1 more source

Forest type and leaf habit mediate thermal and drought tolerance across a tropical elevational gradient

Functional Ecology, Volume 40, Issue 6, Page 1933-1945, June 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Understanding how local climate patterns select for thermal and drought tolerance traits is needed to predict differential responses to climate change across complex ecosystems.
Caitlin N. Terry, Perla Ortiz‐Colín, Jennifer S. Powers, German Vargas G., Adrián Guadamúz, Catherine M. Hulshof   +5 more
wiley   +1 more source

Defining and identifying relevant stakeholders to advance effective conservation

Conservation Biology, Volume 40, Issue 3, June 2026.
The challenge of defining stakeholders in environmental science and an approach for refining existing definitions. Abstract Stakeholder is a contested term that has spawned a multitude of ad hoc definitions. The ambiguity of these definitions has oftentimes impeded transdisciplinary research in environmental governance and conservation science because ...
Milan Büscher, Felix Przesdzink, Christian Wilhelmy, Laura Herzog, Johannes Halbe, Florian Fiebelkorn   +5 more
wiley   +1 more source