Results 31 to 40 of about 110,353 (117)
Revista Mexicana de Ciencias Forestales, 2019 Durango es el principal estado en México para la producción de madera (28.5 % del total nacional). Se estima que la superficie bajo aprovechamiento es de 2 millones de hectáreas; razón por la cual, la ordenación forestal es una tarea importante para los ...
Sacramento Corral Rivas +2 more
doaj +1 more source
Calibración de Microscopios Confocales [PDF]
, 2008 El microscopio confocal ha sido durante mucho tiempo un instrumento de observación tridimensional con múltiples aplicaciones especialmente dentro de la biología.
García-Ballesteros Ramírez, Juan José +3 more
core +1 more source
Calibración de instrumentos de evaluación-clasificación en matemáticas en la Universidad Jorge Tadeo Lozano [PDF]
, 2014 Item Response Theory, IRT, is a valuable methodology for analyzing the quality of the instruments utilized in assessment of academic achievement. This article presents an implementation of the mentioned theory, particularly of the Rasch model, in order ...
Barragán Moreno, Sandra Patricia +3 more
core +2 more sources
calibrar: An R package for fitting complex ecological models
Methods in Ecology and Evolution, Volume 16, Issue 3, Page 507-519, March 2025.Abstract The fitting or parameter estimation of complex ecological models is a challenging optimisation task, with a notable lack of tools for fitting complex, long runtime or stochastic models. calibrar is an R package that is dedicated to the fitting of complex models to data.
Ricardo Oliveros‐Ramos +1 more
wiley +1 more source
RESULTADOS DE LA COMPARACIÓN INTERLABORATORIOS DE CALIBRACIÓN DE MULTÍMETROS CAMET 2009
Ingeniería, 2011 Se presentan los resultados de la segunda comparación en calibración de multímetros, organizada en Costa Rica, por el Laboratorio Metrológico de Variables Eléctricas (LMVE) en la que participaron doce laboratorios, con capacidad para calibrar multímetros
Juan Gómez Valverde +1 more
doaj +1 more source
Software Radio para antenas inteligentes en comunicaciones personales multistandard [PDF]
, 1998 Peer ReviewedPostprint (published ...
Cabrera-Bean, Margarita +6 more
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Remote Sensing in Ecology and Conservation, Volume 11, Issue 1, Page 100-118, February 2025.Selective logging is known to be widespread in the tropics, but is currently very poorly mapped. To improve this, we used in‐situ measurements of aboveground biomass loss (∆AGB) collected from selectively logged permanent sample plots in the southern Peruvian Amazon.
Chiara Aquino +7 more
wiley +1 more source
An open‐source LED lamp for use with the LI‐6800 photosynthesis system
Applications in Plant Sciences, Volume 13, Issue 1, January-February 2025.Abstract Premise Controlling light flux density during carbon dioxide assimilation measurements is essential in photosynthesis research. Commercial lamps are expensive and are based on monochromatic light‐emitting diodes (LEDs), which deviate significantly in their spectral distribution compared to sunlight.
Aarón I. Vélez‐Ramírez +6 more
wiley +1 more source
Cuantificación de hormonas en comprimidos farmacéuticos por espectroscopía NIR : comparación de procedimientos de calibración [PDF]
, 2010 Los principales objetivos del presente trabajo son la puesta a punto de un método NIR por reflectancia para la determinación del contenido de los principios activos (API) de un preparado farmacéutico comercial y la comparación del efecto que tiene la ...
Arruabarrena Gamboa, Julen +2 more
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Methods in Ecology and Evolution, Volume 16, Issue 1, Page 170-182, January 2025.Abstract Harvest data have the potential to be used as an abundance index due to its widespread availability and long‐term collection across large geographical areas. However, challenges such as the lack of hunting effort information, varying data resolutions and reporting biases hinder its direct use as an abundance proxy.
Javier Fernández‐López +5 more
wiley +1 more source