Results 41 to 50 of about 62,225 (242)

Latinos mobilizing beyond threats: The role of fear and hope in issue activism

open access: yesAmerican Journal of Political Science, EarlyView.
Abstract Interest groups intent on spurring political participation often highlight potential threats to galvanize audiences into action. However, while loss aversion is typically seen as a strong motivator, it is important not to neglect the motivational effect of hope and reward‐seeking behavior as people navigate their political landscape.
Vanessa Cruz Nichols
wiley   +1 more source

Growth Modeling of the Giant Electric Ray Narcine entemedor in the Southern Gulf of California: Analyzing the Uncertainty of Three Data Sets

open access: yesAnimals, 2021
The age and growth rate of the giant electric ray, Narcine entemedor, was estimated using growth bands deposited in the vertebral centra of 245 specimens.
Pablo Mora-Zamacona   +6 more
doaj   +1 more source

The Impact of Midwife Experience and Time of Birth on the Risk of Obstetric Anal Sphincter Injuries (OASIS)

open access: yesBirth, EarlyView.
Background: Obstetric anal sphincter injuries (OASIS) are a significant complication of vaginal birth. Methods: This retrospective cohort included 13,651 term spontaneous vaginal deliveries at a single medical center (2020‐2025). Midwife experience (early, mid, and highly experienced), shift timing, and OASIS incidence were analyzed.
Raneen Abu Shqara   +5 more
wiley   +1 more source

Primer registro de la raya manzana, Paratrygon aiereba (Müller & Henle, 1841) (Batoidea: Potamotrygonidae) para el río Bita, Orinoquía, Colombia

open access: yesLatin American Journal of Aquatic Research, 2013
La raya manzana Paratrygon aiereba ha sido confirmada en Colombia para la cuenca del Orinoco en los ríos Meta, Inírida, Tomo, Orinoco y bajo río Arauca. Este estudio la reporta por primera vez para el río Bita, a partir de una hembra grávida capturada en
Luis A Muñoz-Osorio   +1 more
doaj  

Report of the Inter-American Tropical Tuna Commission for the year 2008 [PDF]

open access: yes, 2010
ENGLISH: The Inter-American Tropical Tuna Commission (IATTC) operates under the authority and direction of a convention originally entered into by Costa Rica and the United States. The convention, which came into force in 1950, is open to adherence by

core  

Assessing soil and native high Andean grassland quality under grazing: A case study from the wet Puna of Peru

open access: yesGrassland Science, EarlyView.
Abstract High Andean grasslands are vulnerable to changes in their nutritional quality and carbon sequestration capacity, especially in grazing systems. This study evaluated soil quality and native grasses by measuring carbon, physicochemical parameters, and the nutritional quality of predominant species in the wet Puna of Junín, Peru.
Alberto Arias‐Arredondo   +5 more
wiley   +1 more source

Prevalence of Hypercementosis in Radiographic Studies: A Systematic Review and Meta‐Analysis With Clinical Implications for Endodontic Assessment

open access: yesInternational Endodontic Journal, EarlyView.
ABSTRACT Background Hypercementosis is a non‐neoplastic condition characterized by excessive cementum deposition along the root surface, resulting in altered apical morphology. Although often asymptomatic and detected incidentally on radiographs, changes in apical contour may influence anatomical complexity in endodontic treatment.
Carlos Segura‐Raya   +3 more
wiley   +1 more source

New specimens and records of chondrichthyan fishes (Vertebrata: Chondrichthyes) off the Mexican Pacific coast Nuevos ejemplares y nuevos registros de peces cartilaginosos (Vertebrata: Chondrichthyes) de la costa del Pacífico mexicano

open access: yesRevista Mexicana de Biodiversidad, 2010
New specimens and new records of occurrence for 10 species of chondrichthyan (elasmobranch and chimaeroid) fishes previously unknown or little documented for the continental shelf of the Mexican Pacific are reported.
Gorgonio Ruiz-Campos   +4 more
doaj  

Foliculogénesis Ovárica en la Raya Marmorada, Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes, Rajidae) [PDF]

open access: yes, 2011
Los Condrictios se han convertido en un recurso económico importante en las últimas décadas, siendo Argentina uno de los países que más explota tiburones y rayas, incluso a niveles que exceden los límites de varias especies.
Díaz Andrade, María Constanza   +3 more
core   +1 more source

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