Results 31 to 40 of about 192,354 (177)

Leaf Size and Shape Interact to Control Flammability: An Experiment With Artificial Leaves Cut From the Large‐Leaved Species Sapranthus palanga

Biotropica, Volume 57, Issue 5, September 2025.
We evaluated the flammability of leaves based on their shape and size. Rectangular and triangular shapes showed high flammability that did not vary with size, while circular shapes had minimal flammability, but it varied with size. These findings indicate that leaf shape and size impact flammability.
Esthela Rodríguez‐García, Jennifer S. Powers   +1 more
wiley   +1 more source

Long‐Term Moderate Exercise Combined with Metformin Treatment Induces an Hormetic Response That Prevents Strength and Muscle Mass Loss in Old Female Wistar Rats

Oxidative Medicine and Cellular Longevity, Volume 2019, Issue 1, 2019., 2019
Sarcopenia is a syndrome characterized by a progressive and generalized skeletal muscle mass and strength loss, as well as a poor physical performance, which as strongly been associated with aging. Sedentary lifestyle in the elderly contributes to this condition; however, physical activity improves health, reducing morbidity and mortality.
David Hernández-Álvarez, Beatriz Mena-Montes, Rafael Toledo-Pérez, Gibrán Pedraza-Vázquez, Stefanie Paola López-Cervantes, Alfredo Morales-Salazar, Edith Hernández-Cruz, Roberto Lazzarini-Lechuga, Roman Royer Vázquez-Cárdenas, Silvia Vilchis-DeLaRosa, Pedro Posadas-Rodríguez, Roberto Santín-Márquez, Oscar Rosas-Carrasco, Alejandra Ibañez-Contreras, Adriana Alarcón-Aguilar, Norma Edith López-Díazguerrero, Armando Luna-López, Mina Königsberg, Laura Bravo   +18 more
wiley   +1 more source

El desarrollo de las carreras de posgrado en la Facultad de Ciencias Económicas y Sociales de la UNMDP. Su relación con la agenda de investigación [PDF]

, 2014
La formación de posgrado conducente a título en las Universidades de gestión pública, a partir de la década del '90, es una de las actividades del sistema de educación superior que experimenta notables transformaciones.
González Carella, María Inés, Hammond, Fernando, Pérez, Pedro Enrique   +2 more
core  

Marine Heatwaves and Climate‐Driven Warming Impact Availability of Sardine Subpopulations to Northeast Pacific Fishing Ports

Fisheries Oceanography, Volume 34, Issue 4, July 2025.
ABSTRACT Changing ocean conditions are leading to spatial redistribution of many marine species, including those that support fisheries. A combination of gradual climate trends and shorter‐lived extreme events, such as marine heatwaves, can change the availability of species or stocks to fishing ports, impacting fishing communities and challenging ...
Barbara A. Muhling, Juan P. Zwolinski, Peter T. Kuriyama, Toby D. Auth, Richard D. Brodeur, Sylvia P. A. Jiménez Rosenberg, Gerardo Aceves‐Medina, Jose Augusto Valencia Gasti, Michael G. Jacox, Mercedes Pozo Buil, Jerome Fiechter, Felipe J. Quezada Escalona, Desiree Tommasi   +12 more
wiley   +1 more source

Evaluation of the Coating with TiO2 Nanoparticles as an Option for the Improvement of the Characteristics of NiTi Archwires: Histopathological, Cytotoxic, and Genotoxic Evidence

Journal of Nanomaterials, Volume 2018, Issue 1, 2018., 2018
For the EPD, different voltages and different times were used. Male rats were used in four groups (n = 3) with different treatments. The blood sample was obtained for genotoxic analysis and liver and kidney organs were removed for histopathological analysis.
Javier Morán-Martínez, Roberto Beltrán del Río-Parra, Nadia Denys Betancourt-Martínez, Rubén García-Garza, Joel Jiménez-Villarreal, María Soñadora Niño-Castañeda, Lydia Enith Nava-Rivera, José Alfredo Facio Umaña, Pilar Carranza-Rosales, Rubén Daniel Arellano Pérez-Vertti, Zafar Iqbal   +10 more
wiley   +1 more source

Intra and interspecific variation in foliage phenology and leaf spectroscopy in nine Baja Californian shrub species

Botan‪ical Sciences
Background: Canopy phenology, foliar biochemistry, and leaf lifespan vary according to season within and across species. Intrinsically, this variation should also determine changes in the spectral properties of foliar tissue.
Anaid Rodríguez Bastarrachea, Samantha D. Díaz de León, Stephen H. Bullock, Miguel Ángel Alonso Arévalo, Rodrigo Méndez-Alonzo   +4 more
doaj   +1 more source

Las dinámicas de la internacionalización de la Educación Superior y los posgrados en Brasil [PDF]

, 2014
Este trabajo analiza la política de posgrado en Brasil contextualizada en algunos aspectos de la política de relaciones exteriores de ese país y en los procesos recientes de integración regional de América Latina.
De la Fare, Mónica, Quiroz Schulz, Leslie Adriana   +1 more
core   +1 more source

From Graphene Oxide to N‐Doped Graphene: Understanding the Doping Process

Advanced Energy and Sustainability Research, Volume 6, Issue 4, April 2025.
Nitrogen‐doped graphene has gained attention as an alternative electrocatalyst, making attractive the development of scalable synthesis methods. However, a current bottleneck is to optimize the appropriate nitrogen species present. Here, the N‐doping mechanism is explored in detail starting from graphene oxide as the precursor, to contribute toward the
José Manuel Ruiz‐Marizcal, José Israel Paez‐Ornelas, Héctor Noé Fernández‐Escamilla, Eduardo Antonio Murillo‐Bracamontes, Gabriel Alonso‐Núñez, Eduardo G. Perez‐Tijerina, Noboru Takeuchi, José Manuel Romo‐Herrera   +7 more
wiley   +1 more source

Photothermally Activated Two‐Photon Absorption in Ion‐Implanted Silicon Quantum Dots in Silica Plates

Journal of Nanomaterials, Volume 2018, Issue 1, 2018., 2018
The third‐order nonlinear infrared and ultraviolet properties exhibited by silicon quantum dots irradiated by ultrashort pulses were studied. The samples were prepared by 1.5 MeV Si+2 ion implantation processes in high‐purity silica substrates. Femtosecond z‐scan measurements conducted at 830 nm wavelength revealed strong self‐focusing effects together
C. Torres-Torres, J. Bornacelli, R. Rangel-Rojo, J. A. García-Merino, B. Can-Uc, L. Tamayo-Rivera, J. C. Cheang-Wong, L. Rodríguez-Fernández, A. Oliver, Sergio Obregón   +9 more
wiley   +1 more source

Tendencias en la formación de posgrado en Educación: una revisión de la literatura en Perú, 2012-2022

Revista de Educação PUC-Campinas, 2022
El artículo tiene como objetivo analizar las tendencias que se han configurado durante el periodo de la pandemia en la formación del posgrado en educación en el Perú.
Rosa Maria Tafur Puente, Edith Soria-Valencia   +1 more
doaj   +1 more source