Results 11 to 20 of about 580 (135)

Pollinator efficiency, rather than bee decline, explains a shift to hummingbird pollination in tropical montane forests. [PDF]

New Phytol
Hummingbird pollination is a hallmark of American plant diversity and has long been thought to evolve in tropical mountains due to declining bee activity. Using sister species of Costus specialized on bees (C. kuntzei) and hummingbirds (C. wilsonii), we show that this shift is not driven by reduced bee visitation with elevation, but by greater ...
Juárez P, Gerhardt K, Hughes E, Girvin C, Dellith-Moser A, Tenorio D, Livak A, Kay KM.   +7 more
europepmc   +2 more sources

Modelo unidimensional de la marea en el Golfo de California

Geofísica Internacional, 1993
Siete componentes de la banda semidiurna y seis de la diurna de la marea superficial del Golfo de California, que abarcan un rango de energías de cinco órdenes de magnitud, se estudian mediante un modelo lineal unidimensional.
P. Ripa, G. Velázquez
doaj   +1 more source

Floral adaptation and modular trait evolution associated with a shift from bee to hummingbird pollination

Plant Biology, EarlyView.
By comparing floral trait variation, integration and modularity in two sister species of Neotropical Costus with a pollination shift, we show that, despite pollination syndrome divergence, both species exhibit low floral variation and functional modularity, consistent with pollinator‐driven selection on traits mediating pollen transfer efficiency and ...
P. Juárez, K. M. Kay
wiley   +1 more source

La plata y el oro en el temprano sistema comercial del Golfo de California, 1735-1767

Oficio, Revista de Historia e Interdisciplina
Baja California estaba alejada del continente de Nueva España, pero esta cuasi-isla se encontraba en la ruta que conectaba Asia con América. En 1732, los jesuitas respondieron a la presión de los donantes abriendo la Misión de San José del Cabo en la ...
Marie Duggan
doaj   +3 more sources

Comparative Study of Free and Total Fatty Acids of Spreadable Cheeses by Mass Spectrometry Methods

ChemFoodChem, Volume 2, Issue 3, September 2026.
This study focuses on the determination of FFAs in spreadable cheeses and alternatives using a fast Liquid Chromatography‐High Resolution Mass Spectrometry method. A Gas Chromatography‐Mass Spectrometry method was used to determine the composition (%) of total FAs in the same samples.
Christiana Mantzourani, Georgia Koutsouridou, Eleftheria H. Kaparakou, Dimitra Daferera, Petros A. Tarantilis, Golfo Moatsou, Maroula G. Kokotou   +6 more
wiley   +1 more source

Cinnamaldehyde From Cinnamon as a Food‐Derived Bioactive: Phytochemistry, Anticancer Mechanisms, Bioavailability, Nanoformulation and Safety

Food Frontiers, Volume 7, Issue 5, September 2026.
Cinnamaldehyde derived from Cinnamomum species exerts multitarget anticancer effects by promoting oxidative stress, mitochondrial dysfunction, apoptosis, cell‐cycle arrest, autophagy, and epigenetic changes, and by suppressing mitogen‐activated protein kinase (MAPK), phosphoinositide 3‐kinase/protein kinase B/mechanistic target of rapamycin (PI3K/Akt ...
Gervason Moriasi, Sally Kamau, Gulnaz Seitimova, Shynar Zhumagaliyeva, Javad Sharifi‐Rad, William N. Setzer, Daniela Calina   +6 more
wiley   +1 more source

Registros nuevos de pinnípedos no-residentes en el golfo de California, México

Revista Mexicana de Biodiversidad, 2010
Aunque en el golfo de California, el único pinnípedo residente es el lobo marino de California (Zalophus californianus), existen registros ocasionales de otras 3 especies; en la presente nota se proporcionan 4 registros recientes de lobo fino de ...
Juan Pablo Gallo-Reynoso, Martín Octavio Maravilla-Chávez, Carlos J. Navarro-Serment   +2 more
doaj   +1 more source

Advancing gambogic acid for translational oncology: Redox–proteostasis collapse, multidrug resistance reversal, nanodelivery and biomarker‐guided development

Clinical and Translational Discovery, Volume 6, Issue 4, August 2026.
Gambogic acid exerts anticancer effects through reactive oxygen species‐mediated apoptosis, suppression of nuclear factor kappa B and phosphatidylinositol‐3‐kinase–protein kinase B signalling, multidrug resistance modulation and tumour microenvironment effects.
Uttam Singh Baghel, Kajal Gurow, Geetanjali Mehara, Priyanka Kriplani, Neelam M. Patel, Abhay Sharma, Deeksha Singh, Atamjit Singh, Suchi Dave, Bhawani Singh, Lashyn N. Kiyekbayeva, William N. Setzer, Javad Sharifi‐Rad, Cheryl Grace Pratiwi Rumahorbo, Daniela Calina   +14 more
wiley   +1 more source

Evolución del régimen jurídico del Golfo de California

Iuris Tantum, 1983
El presente estudio tiene por objeto el dar a conocer la evolución jurídica del golfo de California, a partir del año de 1902 a nuestros días empezaremos por ubicar al golfo de California desde el punto de vista geográfico, percatándonos de su ...
Gregorio M. Espinosa
doaj  

ORCHESTRATING DIFFERENCE AND SIMILARITY: Black Fungibility, and the Spatial Redrawing of Racial Categories in Spanish Colonial Morocco, Sahara and Guinea

International Journal of Urban and Regional Research, Volume 50, Issue 4, Page 960-981, July 2026.
Abstract In this article I dissect the spatial strategies through which the Spanish attempted to orchestrate both racial difference and similarity in the African colonies of Morocco, Western Sahara and Equatorial Guinea during the first half of the twentieth century.
Pol Fité Matamoros
wiley   +1 more source