Results 41 to 50 of about 223,789 (231)

Microplastic Detectability Investigation in Soils Using X‐Ray Microtomography

X-Ray Spectrometry, EarlyView.
ABSTRACT X‐ray microtomography (microCT) is a promising tool for investigating microplastic (MP) contamination in soils, offering non‐destructive 3D visualization and quantitative analysis of particles embedded in complex matrices. This study evaluated its applicability by mixing plastic fragments (PET, PEHD, PS, and PP) with humus‐rich and sandy soils
Átila P. Teles, Ana Paula F. de Almeida, Davi F. de Oliveira, Ricardo T. Lopes   +3 more
wiley   +1 more source

Análisis Malmquist y DEA intertemporal de las agriculturas de la Unión Europea

Economía Agraria y Recursos Naturales, 2011
En este trabajo se realiza un análisis comparado de dos métodos no paramétricos de medida de productividad total de los factores con datos de panel basados en programación: índices de Malmquist y un modelo DEA intertemporal que permite acotar las medidas
Natalia Aldaz, Joaquín A. Millán
doaj   +1 more source

Desempleo y tasa global de participación en Colombia: una perspectiva regional por medio de las siete ciudades principales [PDF]

, 2018
23 p.Este capítulo presenta resultados empíricos sobre la relación de largo plazo entre la tasa global de participación (TGP) y el desempleo en Colombia, desde una perspectiva regional. Se evalúa la relación de largo plazo entre la tasa de desempleo y la
Campo-Robledo, Jacobo Alberto, Pinto-Gaitán, Jennifer   +1 more
core  

Temporal dynamics in functional fruit traits of native and invasive fleshy fruited plants in subtropical Andean forests

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Fruits encompass the energetic and material flow between both interacting parties in frugivore‐mediated seed dispersal. Since fruit traits matter in frugivores' foraging decisions, the temporal dynamics of fruit traits might influence interaction outcomes.
Irene M. A. Bender, Pedro G. Blendinger, M. Josefina Zelaya, Tobias N. Rojas   +3 more
wiley   +1 more source

Scaling from microsite to landscape to resolve litter decomposition dynamics in globally extensive drylands

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop, Jiwei Li, Daryl L. Moorhead, Sasha C. Reed, Katherine E. O. Todd‐Brown, Alexi C. Besser, Dellena Evelyn Bloom, Thomas C. Ingalls, Alejandro Cueva   +8 more
wiley   +1 more source

Contrabando técnico y política arancelaria: análisis de datos de panel para el sector textil colombiano [PDF]

, 2018
No período compreendido entre 1990 até a segunda década de 2000, o setor têxtil colombiano enfrentou frequentes modificações de política tarifária.
Torres Gómez, Edwin Esteban, Vélez Ospina, Carolina   +1 more
core   +2 more sources

Harnessing iEcology data to uncover invasive species behaviour

Methods in Ecology and Evolution, EarlyView.
Abstract Invasive animal species threaten ecosystems, biodiversity and human livelihoods. Behavioural traits such as boldness, exploratory tendencies, learning ability and social interactions are known to influence invasion success. Yet these behavioural traits remain underexplored due to challenges in observing behaviour across large spatial and ...
Peter Mikula, Pavel Pipek, Martin Bulla, María L. Castillo, Shawan Chowdhury, Łukasz Dylewski, Franz Essl, Josh A. Firth, Jérôme M. W. Gippet, Theresa Henke, Zuzanna Jagiełło, Ivan Jarić, Bernd Lenzner, Ana Novoa, Nadja Pernat, Petr Pyšek, Valerio Sbragaglia, Jessica H. Smith, Allan T. Souza, Reut Vardi, Shengyu Wang, Piotr Tryjanowski, Annette Menzel   +22 more
wiley   +1 more source

LA INCLUSIÓN EN EL SISTEMA FINANCIERO BOLIVIANO Y LAS MICROFINANZAS

Investigación & Desarrollo, 2011
En el presente trabajo se analiza la evolución del grado de inclusión del sistema financiero boliviano en el periodo 2001-2009, empleando un panel de datos elaborado en base a información de la ASFI y FINRURAL.
Cristian Ricardo Nogales Carvajal, Carlos Alberto Foronda Rojas   +1 more
doaj  

Validating a low‐cost alternative to body surface area estimation: Implications for energy budgets and scaling relationships of ectotherms

Methods in Ecology and Evolution, EarlyView.
Abstract The surface area of organisms is a key parameter in ecological and evolutionary applications. For example, surface area‐dependent traits such as rates of cutaneous water loss and of heat absorbed are relevant for predicting animal desiccation rates and body temperatures.
Jody Thorburn, Gerhard Wiese, Susana Clusella‐Trullas   +2 more
wiley   +1 more source

Análisis de datos de panel en ciencia política: ventajas y aplicaciones en estudios electorales [PDF]

Revista Española de Ciencia Política, 2018
La ciencia política ha recurrido a datos de panel o longitudinales de forma incremental en las últimas décadas. En comparación con datos transversales, las inferencias que se pueden obtener a través de datos de panel son considerablemente más reveladoras; sin embargo, su análisis no debe limitarse al modelo clásico lineal de regresión de mínimos ...
openaire   +4 more sources