Results 91 to 100 of about 112,326 (235)

Assessment of soil slurry saturation and slurry infiltration in pig slurry storage ponds using electrical resistivity tomography

open access: yesVadose Zone Journal, Volume 25, Issue 3, May/June 2026.
Abstract Effective management of pig slurry in semi‐arid settings is critical to protect soils and aquifers. This study integrates multi‐profile electrical resistivity tomography (ERT) compiled into stitched 3D volumes with a calibration based on modified Archie's law derived from laboratory resistivity–moisture tests to obtain semi‐quantitative soil ...
Ximena Capa‐Camacho   +6 more
wiley   +1 more source

UNA NUEVA ESPECIE DECUPANIASW. (SAPINDACEAE) PARA COSTA RICA

open access: yesPolibotánica, 2002
Se describe una nueva especie de Cupania Sw. (Sapindaceae), endémica por el momento a la Cordillera de Tilarán y Cordillera Volcánica Central en Costa Rica.
J. Francisco Morales
doaj  

The Pleistocene Glyptodontidae Gray, 1869 (Xenarthra: Cingulata) of Colombia and some considerations about the South American Glyptodontinae [PDF]

open access: yes, 2012
Until recently, one well-characterized Pleistocene genus of the subfamily Glyptodontinae (Glyptodon ca. 1.08-0.0011 My) was recognized in South America.
Arenas Mosqueras, José E.   +3 more
core   +2 more sources

Inicio de monitoreo glaciar Shullcon: Cordillera Central

open access: yes, 2001
Realiza el monitoreo del glaciar Shullcón (Huarochirí, Lima), a través de las siguientes actividades: establece una red de triangulación para ubicar puntos base, coloca una red de balizas de acuerdo a un eje longitudinal para la medición del balance de masas en el glaciar, además hace el levantamiento topográfico, investigaciones estratigráficas y ...
Instituto Nacional de Recursos Naturales. Dirección General de Aguas y Suelos   +1 more
openaire   +1 more source

Aspect Asymmetry in Martian Gullies: A Topographic Signature of Their Formation Process?

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract On Mars, erosional‐depositional landforms named gullies provide natural experiments for studying the topographic signature of the processes that act on hillslope evolution. High‐resolution topographic data were used to quantitatively compare the steepness of opposing walls in gully alcoves incised into ice‐rich slopeside mantling deposits.
A. Noblet, G. R. Osinski, S. J. Conway
wiley   +1 more source

La Clasificación de Sitios y el Crecimiento del Cupressus Lusitánica en Antioquia, Colombia.

open access: yesRevista Facultad Nacional de Agronomía Medellín, 1972
En plantaciones jóvenes de Cupressus lusitanica, en la Cordillera Central del Departamento de Antioquia, Colombia, se midieron 57 parcelas de las cuales se derivaron curvas de índice de sitio. Por medio de análisis de regresión de desarrollo una tabla de
Tschinkel Heinrich
doaj  

Additions to the Bryophyte Flora of the Neotropics [PDF]

open access: yes, 2004
New and remarkable records of bryophytes from Venezuela, Brazil, Costa Rica and Ecuador are reported. Diphyscium chiapense and Hedwigia ciliata var. leucophaea are new to South America.
Lüth, Michael, Schäfer-Verwimp, Alfons
core  

Agrarian counterpoint

open access: yesAmerican Ethnologist, Volume 53, Issue 2, Page 171-182, May 2026.
Abstract In Colombia's northeastern borderlands, agrarian economies shape how disease risk and stigma are understood and managed. As shown in ethnographic fieldwork in and around the Catatumbo region, cutaneous leishmaniasis—a sandfly‐transmitted disease that produces chronic skin lesions—appears in two radically different guises across adjacent ...
Javier Lezaun, Lina Pinto‐García
wiley   +1 more source

OCURRENCIAS DE FÓSILES PALEOZOICOS AL ESTE DE LA PARTE NORTE DE LA CORDILLERA CENTRAL Y DISCUSIÓN SOBRE SU SIGNIFICADO GEOLÓGICO

open access: yesBoletín de Ciencias de la Tierra, 2007
La edad y origen del núcleo metamórfico de la Cordillera Central (Complejo Cajamarca, sensu lato) permanece como uno de los grandes enigmas de la Geología colombiana.
MARIO MORENO SÁNCHEZ   +2 more
doaj  

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