Results 41 to 50 of about 7,921 (217)

Compost amendments up to one inch restore dry rangeland soil health

open access: yesPLANTS, PEOPLE, PLANET, Volume 7, Issue 5, Page 1324-1333, September 2025.
Rangelands harbor immense diversity and provide ecosystem services across vast swaths of land while supporting rural economies and the food system, but degraded rangelands may require active management to restore diversity and function. We added varying amounts of compost to understand if there are linear or saturating effects on vegetation and soil ...
Eva Stricker   +2 more
wiley   +1 more source

Uso de algoritmos para solucionar sistemas de ecuaciones lineales: una propuesta didáctica para estudiantes de ingeniería [PDF]

open access: yes, 2013
Este proyecto presenta una propuesta didáctica para la enseñanza de métodos de resolución de sistema de ecuaciones lineales, apoyado en el uso de software matemático tal como Winplot y Excel 2013.
Barrantes Páez, Nelson
core  

Natural variation of response to glyphosate in Sinapis alba (Brassicaceae): Physiological effects, shikimate accumulation and genetic mechanisms

open access: yesWeed Research, Volume 65, Issue 5, September/October 2025.
Abstract Glyphosate is the most widely used herbicide worldwide, and glyphosate‐resistant weeds have increased globally. Resistance mechanisms, including target‐site resistance (TSR) and non‐target‐site resistance (NTSR), are well documented, but their extent and importance are poorly understood among biotypes. This study examines the natural variation
Laura Ruiz‐Torres   +4 more
wiley   +1 more source

Lenguaje algebraico y resolución de ecuaciones: un estudio exploratorio en la escuela secundaria

open access: yesRevista de Educación Matemática, 2006
El objetivo del trabajo fue describir las habilidades algebraicas manifestadas por alumnos de 16 a 18 años de edad en la resolución de ecuaciones lineales, como así también en la interpretación gráfica de sistemas de ecuaciones.
Diana Cecilia Pozas
doaj  

Tiny Patch, Big Value: A Small Dry Forest Patch Supports Wildlife Conservation in Guanacaste, Costa Rica

open access: yesEcology and Evolution, Volume 15, Issue 8, August 2025.
This study highlights the biodiversity value of the Murren Reserve, a small tropical dry forest patch in Guanacaste, Costa Rica. Using camera traps and opportunistic observations, researchers documented 32 wildlife species, including federally endangered species like the ocelot (Leopardus pardalis) and puma (Puma concolor), as well as 73 plant species.
Trevor L. Proctor   +5 more
wiley   +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

¿Es la economía un sistema complejo en eterno desequilibrio?

open access: yesEnsayos de Economía, 2023
Este artículo presenta una discusión general sobre algunas de las razones que se tienen para creer que una economía estaría mejor enmarcada en la teoría de los sistemas complejos (orgánicos) que en la teoría de los sistemas mecánicos de la escuela ...
Diego Fernando Ávila Ibáñez
doaj  

Climatic disequilibrium modulates canopy service across abiotic stress gradients

open access: yesJournal of Ecology, Volume 113, Issue 8, Page 2160-2172, August 2025.
The results presented indicate that abiotic stressors, combined with climatic disequilibrium, modulate the canopy service. Consequently, under future climate change scenarios that may increase stress and climatic disequilibrium, canopy service will become crucial for the maintenance of the recruiting community.
Jordi Margalef‐Marrase   +5 more
wiley   +1 more source

Institutions, in time: Designing feedback pathways for shared infrastructure transitions

open access: yesPolicy Studies Journal, Volume 53, Issue 3, Page 654-680, August 2025.
Abstract Electric utilities, challenged by a rapidly unfolding energy transition, use many informal institutions to bridge across technologies and sectors. Little is known, however, about how electric utility systems and other polycentric systems' institutions‐in‐use vary and evolve over time.
Matthew Grimley   +6 more
wiley   +1 more source

Sistemas de ecuaciones lineales con parámetros

open access: yes, 2023
En esta presentación se analiza la clasificación y resolución de sistemas lineales de ecuaciones con parámetros.https://polimedia.upv.es/visor/?id=fe00bbf0-fba5-11ed-9d91-ed3ded5ce020Boix García, M. (2023). Sistemas de ecuaciones lineales con parámetros.
Boix García, Macarena
core  

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