Results 31 to 40 of about 4,913 (210)

Quasi‐BIC and Reflective Mode Coupling Drives SHG Beyond the Q Factor Limit

open access: yesSmall, Volume 22, Issue 32, 8 June 2026.
An analytical expression is developed to relate second‐harmonic generation to both the resonance Q factor and absorptance. Simulations and experiments on a dual‐resonance 3R‐MoS2 metasurface validate the formula, showing that absorptance engineering provides an effective route to enhance SHG beyond conventional Q‐only design.
Wenkai Yang   +8 more
wiley   +1 more source

Source Parameters of the 1906 Manas (Mw 7.7), 1944 Xinyuan (Mw 7.2) and 1812 Nilke Earthquakes and Seismotectonics of the Borohoro Shan, Western China

open access: yesTectonics, Volume 45, Issue 6, June 2026.
Abstract The 1906 Manas Earthquake is the largest earthquake recorded in the Borohoro Shan (BRS) since 1900. The reported magnitude ranges from 7.2 to 8.3, but uncertainties remain regarding its size, mechanism, and responsible fault. Similar confusion exists for the 1812 Nilke and 1944 Xinyuan Earthquakes, the only other Mw > 7 earthquakes in the NE ...
C.‐H. Tsai   +3 more
wiley   +1 more source

Commentary—Evolving Regionalism in Global Governance

open access: yesWorld Affairs, Volume 188, Issue 4, Winter 2025.
ABSTRACT The isolationist turn in US foreign policy likely heralds a shift in how states engage with the longstanding institutions of global governance. We argue for the importance of a multilevel approach to understanding how domestic, national, and regional factors play into states' strategies in seeking partners and choosing international forums. We
Michael Plouffe, Thomas Gift
wiley   +1 more source

High‐harmonic generation from subwavelength silicon films

open access: yesNanophotonics, Volume 14, Issue 23, Page 3927-3938, 02 November 2025.
Abstract Recent years have witnessed significant developments in the study of nonlinear properties of various materials at the nanoscale. Often, experimental results on harmonic generation are reported without the benefit of suitable theoretical models that allow assessment of conversion efficiencies compared to the material's intrinsic properties ...
Kent Hallman   +12 more
wiley   +1 more source

Colombia y la geopolítica de la Organización del Tratado del Atlántico Norte (OTAN). Implicaciones de ser Partnership

open access: yesRevista Kavilando, 2022
La OTAN, por sus siglas en español, es un organismo de cooperación político militar creado en el marco de la Guerra Fría que enfrentó dos bloques mundiales hegemónicos representantes de dos ideologías preponderantes en el siglo XX, capitalismo y ...
Hector Alejandro Zuluaga Cometa   +1 more
doaj  

Los dilemas de la Europa poscomunista frente a la expansión de la OTAN

open access: yesRevista Mexicana de Ciencias Políticas y Sociales, 2015
En este artículo, la autora analiza con detalle lo que ha sido la expansión de la OTAN hacia el este de Europa después del fin de la Guerra Fría.
Daniela Spenser
doaj   +1 more source

Macroecological and Biogeographic Patterns of Kinorhyncha in the Iberian Peninsula

open access: yesJournal of Biogeography, Volume 52, Issue 11, November 2025.
ABSTRACT Aim Biogeography and macroecology aim to understand the processes that determine patterns in nature. In the marine environment, most of what we know has been documented for fish and macrobenthic organisms. As a result, this knowledge is negatively biased towards smaller benthic organisms, including meiofauna.
Luciane A. Guimarães Feitoza   +8 more
wiley   +1 more source

NATO´s Partners in Afghanistan: Impact and Purpose

open access: yesRevista UNISCI, 2010
Desde el 2003, la misión de la OTAN, ISAF (Fuerza de Asistencia para la Seguridad Internacional) se ha apoyado en las contribuciones en tropas no sólo de países de la OTAN sino también en socios EAPC/PfP y los llamados socios globales (países no europeos
Rebecca Moore
doaj  

p‐Type β‐Ga2O3 Homoepitaxial Films with Superior Electrical Transport Properties

open access: yesAdvanced Electronic Materials, Volume 11, Issue 16, October 6, 2025.
High‐quality p‐type β‐Ga2O3 thin films are simultaneously grown by MOCVD on (010) and (–201) single crystal substrates. While the (–201) film shows typical semiconductor behavior, the (010) sample exhibits superior electrical properties. The study reveals orientation‐driven difference in electrical transport, supported by structural and microscopic ...
Zeyu Chi   +9 more
wiley   +1 more source

Right Strategy, Wrong Place – Why NATO´s Comprehensive Approach Will Fail in Afghanistan

open access: yesRevista UNISCI, 2010
La OTAN ha tenido razón en adoptar conjuntamente una Aproximación Integral (CA) implicando a toda la comunidad internacional ya que es un prerrequisito para el éxito en las operaciones de respuesta en situaciones de crisis.
Peter Viggo Jakobsen
doaj  

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