Results 51 to 60 of about 24,536 (216)

Spatiotemporal assessment of benthic macroinvertebrate communities in the Bermejo River Basin in the Ecuadorian Amazonia

open access: yesLimnology and Oceanography Letters, Volume 10, Issue 3, Page 371-380, June 2025.
Abstract The Cofán communities rely on the Cofán Bermejo Ecological Reserve for their survival and cultural practices. Due to the rugged and inaccessible topography of the reserve in the Northern Ecuadorian Amazon region, limited biomonitoring and ecological characterization studies of the ecosystem health have been conducted.
Federico Sinche Chele   +8 more
wiley   +1 more source

Minority compounds and sensory analysis evaluation of Coffea arabica var. caturra cultivated in three different altitudinal ranges

open access: yesActa Agronómica, 2017
The composition of minority compounds in samples of roasted and ground coffee (Coffea arabica var. caturra) cultivated in three altitudinal ranges 1300-1400, 1400-1600, 1600-1800 m. a. s. l., in the Huila department of Colombia were determined.
Jennifer Tatiana Cruz Bolivar   +4 more
doaj   +1 more source

A novel combination of in vitro propagation and hydroponic culture for hybrid cacao (Theobroma cacao) plants

open access: yesApplications in Plant Sciences, Volume 13, Issue 3, May-June 2025.
Abstract Premise Currently, there is a lack of controlled cultivation methods for cacao (Theobroma cacao), a plant species with high commercial value. One major concern is the tendency of cacao plants to accumulate high concentrations of cadmium (Cd), a heavy metal with high toxicity to living organisms.
Luis David Vera Pinargote   +2 more
wiley   +1 more source

Inteligencia lingüística y la escritura mediada con las TIC

open access: yesLetras
La Inteligencia Lingüística es la capacidad de usar las palabras de manera efectiva, en forma oral o escrita. Esta investigación tuvo como propósito analizar su articulación con la escritura, mediada por las Tecnologías de la Información y la ...
Ana Elizabeth Romero Buitrago   +1 more
doaj   +1 more source

Managerial Skills and Organizational Performance: Competitive Advantage

open access: yesMercados y Negocios, 2023
The purpose of the following research was to analyze how management skills affect organizational performance and contribute to SMEs' competitive advantage.
Fernando Penagos Guzmán   +2 more
doaj   +1 more source

A geography of illicit crops (coca leaf) and armed conflict in Colombia [PDF]

open access: yes, 2004
Colombia is currently the world’s largest producer of coca leaf and the principal producer of opium poppies in the Americas; the plants are the basic raw materials used to produce cocaine and heroin.
Díaz, Ana María, Sánchez, Fabio
core  

BioTIME 2.0: Expanding and Improving a Database of Biodiversity Time Series

open access: yesGlobal Ecology and Biogeography, Volume 34, Issue 5, May 2025.
ABSTRACT Motivation Here, we make available a second version of the BioTIME database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. The updated version expands version 1.0 of the database by doubling the number of studies and includes substantial additional curation to the taxonomic ...
Maria Dornelas   +484 more
wiley   +1 more source

Competencia matemática plantear y resolver problemas: el caso de la mediana como medida de tendencia central [PDF]

open access: yes, 2012
La siguiente comunicación presenta un avance de investigación, en el cual se pretende caracterizar los niveles de la competencia matemática plantear y resolver problemas que se caracterizan en los desempeños de los estudiantes de 9° grado de la ...
Floriano, Edgar   +2 more
core  

Mapping Peatland Distribution and Quantifying Peatland Below‐Ground Carbon Stocks in Colombia's Eastern Lowlands

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 130, Issue 4, April 2025.
Abstract The extent and distribution of tropical peatlands, and their importance as a vulnerable carbon (C) store, remain poorly quantified. Although large peatland complexes in Peru, the Congo basin, and Southeast Asia have been mapped in detail, information on many other tropical areas is uncertain.
A. Uhde   +9 more
wiley   +1 more source

El Análisis Didáctico. Una posibilidad de Transformar las Prácticas en Física: El caso del Movimiento

open access: yesRevista Científica, 2019
Se plantean como objeto central el Diseño de Unidades Didácticas para los Programas de Curso Cinemática y Dinámica y el Problema del Movimiento: Una propuesta para formación de profesores en la Licenciatura Matemáticas y Física, como parte del proyecto ...
Alexandra Castro Hidalgo   +2 more
doaj  

Home - About - Disclaimer - Privacy