Results 71 to 80 of about 717,821 (221)

Spatial and temporal occurrence of fin whales (Balaenoptera physalus) and euphausiids (Nyctiphanes simplex) in the Ballenas Channel, Gulf of California, Mexico

open access: yesCiencias Marinas, 2015
Fin whales (Balaenoptera physalus) are observed year-round in the Ballenas Channel and Bahía de los Ángeles region, Gulf of California, where their main food item is the euphausiid Nyctiphanes simplex.
Paloma Ladrón-de-Guevara   +2 more
doaj   +1 more source

La divulgación científica en la sociedad del conocimiento [PDF]

open access: yes, 2014
En este trabajo se pretende mostrar el papel que juega la divulgación científica en la sociedad del conocimiento. A lo largo de cuatro capítulos se hace un repaso sobre qué es la divulgación científica, cuáles son sus alcances y sus objetivos, cuáles son
Hernández Delgado, José Octavio
core   +1 more source

Staying Alive: Individual Behavioral Variation Influences Survival, but Not Reproductive Success, in Female Group‐Living Ground Squirrels

open access: yesEcology and Evolution, Volume 15, Issue 8, August 2025.
We investigated how individual behavioural traits—docility and boldness—affect survival and reproductive success in female Cape ground squirrels over a ten‐year period. While both traits influenced survival, with more docile and bolder individuals showing higher annual survival, neither trait predicted reproductive success.
Miyako H. Warrington   +4 more
wiley   +1 more source

Ciencia y educación en América Latina: los entornos de su complejidad curricular y didáctica [PDF]

open access: yes, 2009
A inicios del siglo XXI la identificación de los problemas regionales en América Latina parecen provenir de un denominador común: la educación, y más específicamente, del alfabetismo científico y tecnológico.
Villarruel Fuentes, Manuel
core   +1 more source

Livelihood resilience: The role of social‐ecological filters in a Globally Important Agricultural Heritage System of southern Chile

open access: yesPeople and Nature, Volume 7, Issue 8, Page 1889-1904, August 2025.
Abstract The global agrifood system faces significant threats due to rapid and interconnected social‐ecological changes, including climate change, land‐use shifts, demographic changes and emerging diseases. Small‐scale farmers are among the most vulnerable groups to these changes due to their direct dependence on their environment.
Julián Caviedes   +7 more
wiley   +1 more source

Estimación espectral de ondas oceánicas por máxima entropía

open access: yesGeofísica Internacional, 1980
Se realiza un estudio estadístico de cuatro criterios para determinar el orden de un modelo autorregresivo (AR) a ser ajustado a datos de olas oceánicas.
H. G. Pena   +3 more
doaj   +1 more source

Optimising management against dynamic threats: A spatially explicit approach based on integer programming

open access: yesMethods in Ecology and Evolution, Volume 16, Issue 8, Page 1868-1885, August 2025.
Abstract Defining strategies to control dynamic threats is a highly complex problem that is defined by the biological characteristics of the threatening agents (e.g. invasive species), the landscape context and the management objective within the constraints of limited financial resources.
José Salgado‐Rojas   +2 more
wiley   +1 more source

Functionalized rare earth-doped nanoparticles for breast cancer nanodiagnostic using fluorescence and CT imaging

open access: yesJournal of Nanobiotechnology, 2018
Background Breast cancer is the second leading cause of cancer death among women and represents 14% of death in women around the world. The standard diagnosis method for breast tumor is mammography, which is often related with false-negative results ...
Akhil Jain   +8 more
doaj   +1 more source

Relationship between Aggessive Behavior and Academic Goals: Study with a Spanish Compulsory Secondary Education [PDF]

open access: yes, 2012
Artículo de investigación financiado a través del Proyecto SEJ 2004-07311/EDUC perteneciente al Plan Nacional de Investigación Científica, Desarrollo e Innovación Tecnológica del Ministerio de Educación y Ciencia concedido al segundo ...
García Fernández, José M.   +4 more
core  

A spatial planning approach for the identification of critical habitat for threatened species

open access: yesConservation Biology, Volume 39, Issue 4, August 2025.
Abstract The designation of critical habitat for the conservation of threatened species has long been recognized in the environmental legislation of different countries. However, translating vague legislation about critical habitat into practical real‐world designation remains challenging because of its sensitivity to many context‐ and species‐specific
Alejandra Morán‐Ordóñez   +10 more
wiley   +1 more source

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