repositories = "Archivo Digital UPM"

Encontrado 77,640 documentos, página mostrada 7764 de 7764

Meter data management for smart monitoring power networks

Description: The electrical power distribution and commercialization scenario is evolving worldwide, and electricity companies, faced with the challenge of new information requirements, are demanding IT solutions to deal with the smart monitoring of power networks. Two main challenges arise from data management ...
Language(s): Inglés

Desarrollo de un modelo multicriterio-multiobjetivo de oferta de energías renovables : aplicación a la Comunidad de Madrid

Description: La presente tesis doctoral se enmarca en el estudio de los modelos de oferta de energías renovables y sustitución de energías clásicas basados en métodos de programación matemática. El objetivo planteado es la construcción de un modelo de oferta de energías renovables mediante el uso de las técnicas...
Language(s): Español

Dislocation Dynamics in Non-conves Domains using Finite Elements with Embedded Discontinuities

Description: The standard strategy developed by Van der Giessen and Needleman (1995 Modelling Simul. Mater. Sci. Eng. 3 689) to simulate dislocation dynamics in two-dimensional finite domains was modified to account for the effect of dislocations leaving the crystal through a free surface in the case of arbitrar...
Language(s): Inglés

New data on the Pleistocene of Trani (Adriatic Coast, Southern Italy)

Description: Along the Apulian Adriatic coast, in a cliff south of Trani, a succession of three units (superimposed on one another) of marine and/or paralic environments has been recognised. The lowest unit I is characterised by calcareous/siliciclastic sands (css), micritic limestones (ml), stromatolitic and ch...
Language(s): Inglés

Nitrogen deposition alters nitrogen cycling and reduces soil carbon content in low-productivity semiarid Mediterranean ecosystems.

Description: Anthropogenic N deposition poses a threat to European Mediterranean ecosystems. We combined data from an extant N deposition gradient (4.3–7.3 kg N ha−1 yr−1) from semiarid areas of Spain and a field experiment in central Spain to evaluate N deposition effects on soil fertility, function and cyanoba...
Language(s): Inglés

Estimation of nitrogen budgets for contrasting catchments at the landscape scale.

Description: A comprehensive assessment of nitrogen (N) flows at the landscape scale is fundamental to understand spatial interactions in the N cascade and to inform the development of locally optimised N management strategies. To explore these interactions, complete N budgets were estimated for two contrasting ...
Language(s): Inglés

Remote sensing of LAI, chlorophyll and leaf nitrogen pools of crop- and grasslands in five European landscapes.

Description: Leaf nitrogen and leaf surface area influence the exchange of gases between terrestrial ecosystems and the atmosphere, and play a significant role in the global cycles of carbon, nitrogen and water. The purpose of this study is to use field-based and satellite remote-sensing-based methods to assess ...
Language(s): Inglés

Heterogeneity of atmosfpheric ammonia at the landscape scale and consequences for environmental impact assessment.

Description: We examined the consequences of the spatial heterogeneity of atmospheric ammonia (NH3) by measuring and modelling NH3 concentrations and deposition at 25 m grid resolution for a rural landscape containing intensive poultry farming, agricultural grassland, woodland and moorland. The emission pattern ...
Language(s): Inglés

The application of inverse-dispersion and gradient methods to estimate ammonia emissions from a penguin colony.

Description: Penguin colonies represent some of the most concentrated sources of ammonia emissions to the atmosphere in the world. The ammonia emitted into the atmosphere can have a large influence on the nitrogen cycling of ecosystems near the colonies. However, despite the ecological importance of the emission...
Language(s): Inglés

Encontrado 77,640 documentos, página mostrada 7764 de 7764

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