Results 51 to 60 of about 896,478 (230)

Tuning the Twist by Molecular Design: A New Strategy for Hexabenzocoronene‐Containing Helical Twistacene

Chemistry – A European Journal, Volume 32, Issue 17, 5 May 2026.
An efficient Scholl–based strategy enables precise control of the C–C bond to access the first hexabenzocoronene–containing helical twistacene (NG2). The resulting nanographene shows pronounced helical distortion, high stability, enhanced solubility, and promising redox and optoelectronic properties.
Juan P. Mora‐Fuentes, Daniel Villar‐Castro, J. Francisco Barbosa‐de‐Bessa, Daniel Aranda, Frank Hampel, Dolores Pérez, M. Eugenia Pérez‐Ojeda, Diego Peña, Andreas Hirsch   +8 more
wiley   +1 more source

Spectrum Sensing Framework based on Blind Source Separation for Cognitive Radio Environments [PDF]

, 2015
El uso eficiente del espectro se ha convertido en un área de investigación activa, debido a la escasez de este recurso y a su subutilización. En un escenario en el que el espectro es un recurso compartido como en la radio cognitiva (CR), los espacios sin
Gil Taborda, Camilo, Gómez García, Jorge Andrés, Quiza Montealegre, Jhon Jair, Sepúlveda Cano, Lina María   +3 more
core   +3 more sources

Data gaps and heterogeneity limit our understanding of human–wildlife interactions: A continental study of Andean bears

People and Nature, Volume 8, Issue 5, Page 1499-1519, May 2026.
Abstract The expansion and intensification of human activities have increased interactions between people and wildlife. Interactions involving bears and other large carnivores are complex and can lead to conflicts. Promoting positive coexistence requires managing information, which is not always available.
Roxana Rojas‐VeraPinto, Rubén Bernardo‐Madrid, Manuela González‐Suarez   +2 more
wiley   +1 more source

Control predictivo en el espacio de estados de un captador solar tipo Fresnel [PDF]

, 2017
Uno de los recursos más importantes para mejorar la eficiencia en los sistemas de energía solar, es el control avanzado. En general, con el uso de estrategias de control convencionales no se obtienen buenos desempeños en todo el rango de operación debido
Camacho, Eduardo F., Camacho, Eduardo F. (Coordinador), Gallego Len, Antonio Javier, Rosa Triviño, Mario Benjamín de la   +3 more
core  

Revitalizing endangered mycocultural heritage in Mesoamerica: The case of the Tlahuica‐Pjiekakjoo culture

PLANTS, PEOPLE, PLANET, Volume 8, Issue 3, Page 907-923, May 2026.
The preservation and revitalization of mycocultural heritage, developed over centuries of human‐mushroom interaction, contributes to safeguarding both natural ecosystems and the promotion of sustainable rural development, one of the biggest global challenges currently faced by humankind.
Elisette Ramírez‐Carbajal, Magdalena Martínez‐Reyes, Olivia Ayala‐Vásquez, Rodríguez‐Evangelista Fabiola, Mayra Lagunes Reyes, Faustino Hernández‐Santiago, Mónica Rangel Villafranco, Fuqiang Yu, Jesús Pérez‐Moreno   +8 more
wiley   +1 more source

Detection of inter-turn short circuits in induction motors using orthogonal matching pursuit and dictionary learning

Frontiers in Signal Processing
Fault detection in induction motors is critical due to their extensive use in industrial applications. Among the various types of faults, stator faults are the most frequent and complex, making early detection particularly challenging.
Carlos Morales-Perez, Juan Pablo Amezquita-Sanchez, Jose Rangel-Magdaleno, David Granados-Lieberman, Martin Valtierra-Rodriguez   +4 more
doaj   +1 more source

Landscape features predict broad‐scale seed rain patterns across fragments of the Brazilian Atlantic Forest

Journal of Ecology, Volume 114, Issue 5, May 2026.
Along with precipitation, forest cover emerges as a fundamental driver of alpha and beta diversity in the seed rain. This highlights the role of habitat amount at the landscape level over patch‐level features, like patch size, for seed dispersal. However, increased seed density can be related to higher dispersal rates in forest borders.
Luís Felipe Daibes, Haldre S. Rogers, Fulbert J. K. Gnonlonfoun, Talita Zupo, Rafael Barbizan Sühs, Daniella Vinha, Débora Cristina Rother, Paulo Alves Almeida Junior, Angela Luciana de Avila, José Marcos Barbosa, Romualdo Morelatto Begnini, Antonio Jorge Tourinho Braga, Marcos Vinicius Wincker Caldeira, Elivane Salete Capellesso, Andre Targa Cavassani, Eliana Cazetta, Ricardo Gomes Cesar, Marilena Menezes Silva Conde, Cléber Covre, Henrique Machado Dias, Pavel Dodonov, Rinaldo Luiz Caraciolo Ferreira, Cintia Gomes Freitas, Milena Gama, Gerhard Gottsberger, Flavia Moraes de Jesus, Carlos Alfredo Joly, Ute Christiane Knörr, Sustanis Horn Kunz, Vinícius Londe, Ana Lícia Patriota Feliciano Marangon, Luiz Carlos Marangon, Fabiana Maraschin‐Silva, Marcia C. M. Marques, Adriana Maria Zanforlin Martini, Valéria Forni Martins, Larissa Lopes Mellinger, Luís Fernando Tavares de Menezes, Sandra Bos Mikich, Luiz Fernando Duarte de Moraes, Marcelo Trindade Nascimento, Marcelo Augusto Meratti de Oliveira, Monique Perini, Julia Fleming Pimentel, Daniel Piotto, Rita de Cássia Quitete Portela, Janaine Isabela da Silva Rocha, Ricardo Ribeiro Rodrigues, Jerônimo Boelsums Barreto Sansevero, Amanda Souza dos Santos, Flavio Antonio Maës dos Santos, Jaqueline Pêgo Quintino Santos, Nelson Augusto Santos Junior, Tanise Luisa Sausen, Carlos Rodrigues da Silva, Joselane Príscila Gomes da Silva, Jorge Yoshio Tamashiro, Luiz Roberto Zamith, Leticia Bolian Zimback, Raquel Fernandes Zorzanelli, Victor Pereira Zwiener, Renato Augusto Ferreira de Lima, Luís Fábio Silveira, Marco Aurélio Pizo   +63 more
wiley   +1 more source

Aplicación de Costos de Incertidumbre Analíticos de Energía Solar, Eólica y Vehículos Eléctricos en el Despacho Óptimo de Potencia

Ingeniería, 2017
Contexto: actualmente las fuentes de energía renovables están jugando un importante rol para contrarrestar el impacto ambiental de las fuentes de energía tradicional.
Juan Arévalo, Fabian Santos, Sergio Rivera   +2 more
doaj   +1 more source

El cambio climático, la seguridad alimentaria y los pequeños productores [PDF]

, 2014
La presente nota informativa ofrece un panorama general de lo que se afirma en el AR5 sobre los efectos del cambio climático en la alimentación y la agricultura, y en particular, la alimentación y la agricultura de los 500 millones de pequeños ...
Vermeulen, Sonja J.
core  

Effects of three-body collisions in a two-mode Bose-Einstein condenstate [PDF]

, 2015
We study the effects of three-body collisions in the basic physical properties of a two-mode Bose-Einstein condensate. By finding the exact analytical solution of a model which includes two-body and three-body elastic and mode-exchange collisions, we ...
Carlos Sabín, Cristopher Hernández, Inguscio M., Ivette Fuentes, Pablo Barberis-Blostein, Robert B. Mann, Sakurai J. J.   +6 more
core   +2 more sources