Results 31 to 40 of about 16,900,085 (168)

La Guerra en Ucrania: motivos y probables consecuencias

Journal de Ciencias Sociales, 2022
Las historias de Rusia y Ucrania han estado estrechamente ligadas desde sus orígenes: la Rus’ de Kiev, establecida en el año 885 en el centro de Ucrania, es reivindicada por ambos países como el centro religioso y político del que nacieron sus ...
Lila Roldán Vázquez
doaj   +1 more source

La disputa por "Macedonia". Origen, desarrollo y consecuencias de un conflicto identitario

Foro Internacional, 2016
Desde 1991, la Antigua República Yugoslava de Macedonia y Grecia han mantenido un arduo conflicto diplomático que tiene ramificaciones internas, bilaterales e internacionales.
Antonio Gil Fons, Alejandra Nieves Camacho   +1 more
doaj   +1 more source

Colombia como único socio global OTAN en América: factores de inteligencia estratégica y geopolítica

Perspectivas en Inteligencia
El presente artículo analiza la geopolítica y los factores de inteligencia estratégica que tiene el Estado colombiano en su rol con la Organización del Tratado del Atlántico Norte (OTAN) como socio global y máximo aliado no OTAN de los Estados Unidos ...
Juan Camilo Ubaque-Bernal, Fernando Babativa-Muñoz   +1 more
doaj   +1 more source

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

Small, 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, Hao Qin, Boqing Liu, Chuanyu Wang, Yilin Tang, Jiri Janousek, Xueqian Sun, Alex Y. Song, Yuerui Lu   +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

Tectonics, 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, G. Kulikova, F. Krüger, R. T. Walker   +3 more
wiley   +1 more source

High‐harmonic generation from subwavelength silicon films

Nanophotonics, 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, Sven Stengel, Wallace Jaffray, Federico Belli, Marcello Ferrera, Maria Antonietta Vincenti, Domenico de Ceglia, Yuri Kivshar, Neset Akozbek, Shroddha Mukhopadhyay, Jose Trull, Crina Cojocaru, Michael Scalora   +12 more
wiley   +1 more source

Macroecological and Biogeographic Patterns of Kinorhyncha in the Iberian Peninsula

Journal 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, Pablo Damian Borges Guilherme, Nuria Sánchez, María Herranz, Diego Cepeda, Alberto González‐Casarrubios, Ricardo Cardoso Neves, Fernando Pardos, Maikon Di Domenico   +8 more
wiley   +1 more source

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

Advanced 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, Corinne Sartel, Vincent Sallet, Bruno Berini, Yves Dumont, Yunlin Zheng, Leonid Chernyak, Miquel Vellvehí, Amador Pérez‐Tomás, Ekaterine Chikoidze   +9 more
wiley   +1 more source

Prevalencia de obesidad en adultos del municipio de Soledad (Atlántico, Colombia), 2010

, 2012
Resumen Objetivo: Determinar la prevalencia de obesidad en adultos del municipio de Soledad (Atlántico, Colombia) según diferentes consensos de clasificación. Materiales y métodos: Estudio descriptivo, transversal.
Edgar Navarro Lechuga; Universidad del Norte, Rusvelt Franklin Vargas; UNIVERSIDAD DEL NORTE   +1 more
core   +1 more source

Robust Laser‐Induced Graphene‐Boron‐Doped Diamond Nanowall Hybrid Nanostructures with Enhanced Field Electron Emission Performance for Microplasma Illumination Devices

Small Science, Volume 5, Issue 6, June 2025.
A facile procedure is developed for creating laser‐induced graphene (LIG)‐boron‐doped diamond nanowall (BDNW) nanostructures on flexible polyimide films. Although BDNW incorporation has resulted to increased defect density in the LIG, the obtained nanostructures benefit from enhanced electrical conductivity and specific surface area.
Mohsen Khodadadiyazdi, Mateusz Ficek, Maria Brzhezinskaya, Shradha Suman, Salila Kumar Sethy, Kamatchi Jothiramalingam Sankaran, Bartłomiej Dec, Mattia Pierpaoli, Sujit Deshmukh, Miroslaw Sawczak, William A. Goddard III, Robert Bogdanowicz   +11 more
wiley   +1 more source