Browsing Articles publicats (Medi Ambient i Ciències del Sòl ) by Title
Now showing items 1-20 of 313
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A comparison of new and existing equations for estimating sensible heat flux using surface renewal and similarity concepts
(American Geophysical UnionWiley, 2006)This paper describes two approaches for estimating sensible heat flux, using surface renewal and similarity concepts. One approach depends on a temperature structure function parameter and is valid in the inertial sublayer. ... -
A dynamic model based on the piston flow concept for the thermal characterization of solar collectors
(Elsevier, 2012)A simple, transient model for the characterization of the dynamic thermal performance of solar thermal collectors was developed and experimentally validated. The proposed model equation is linear with respect to the input ... -
A manera d'Introducció : nitrats, aigua i agricultura, un problema modern d'ús del sòl
(Institució Catalana d’Estudis Agraris, 1999) -
A method based on high‐frequency temperature measurements to estimate the sensible heat flux avoiding the height dependence
(American Geophysical UnionWiley, 2002)A new method to estimate the sensible heat flux H using high‐frequency temperature data has been proposed. The new method proposes to scale the mean eddy vertical velocity responsible for the air parcels renewal using ... -
A method for livestock waste management planning in NE Spain
(Elsevier, 2003)A method of decision-making on livestock wastes management in areas with nutrient surplus due to high livestock density is applied in Catalonia (NE Spain). Nutrient balance is made considering soil nitrogen application ... -
A proposal of nitrogen balance in a very high density olive orchard
(El Oued University, 2016)The nitrogen (N) balance was estimated in a very high density olive orchard in north- east of Spain, in order to calculate the inputs and outputs of N related to tree response and soil nitrogen availability. The calculate ... -
A Short-term Study to Compare Field Strategies for Ammonia Emission Mitigation
(Crop Science Society of America, 2018-10-16)Abatement of ammonia (NH3) emissions is crucial in calcareous soils under semiarid Mediterranean climates. The aim of the study was to compare NH3 emissions using different slurry application methods. An experiment was ... -
A simple parameterization of bulk canopy resistance from climatic variables for estimating hourly evapotranspiration
(Wiley, 2006)This paper examines a model for estimating canopy resistance rc and reference evapotranspiration ETo on an hourly basis. The experimental data refer to grass at two sites in Spain with semiarid and windy conditions in a ... -
Accuracy assessment of digital terrain model dataset sources for hydrogeomorphological modelling in small Mediterranean catchments
(MDPI, 2018)Digital terrain models (DTMs) are a fundamental source of information in Earth sciences. DTM-based studies, however, can contain remarkable biases if limitations and inaccuracies in these models are disregarded. In this ... -
Acumulación de sedimentos finos en el lecho del río Isábena: efectos sobre el transporte y la dinámica sedimentaria
(Asociación Española para el Estudio del Cuaternario y la Sociedad Española de Geomorfología, 2011)El almacenamiento de sedimentos y sus efectos sobre el transporte de sedimentos y su dinámica ha sido estudiado en un tramo de ~3 km en el río Isábena durante un año hidrológico medio (2007-2008). La acumulación total ... -
Advances in the prognosis of soil sodicity under dryland irrigated conditions
(Elsevier, 2014)Salt-affected soils, both saline and sodic, may develop under both dryland and irrigated conditions, affecting the physical and chemical soil properties, with negative consequences in the environment, in crop production ... -
Aggregate strength in calcareous soil fertilized with pig slurries
(British Society of Soil Science, 2017-07-13)Effects of applications of pig slurry on soil aggregate stability are not well understood in dryland agriculture. This research aims to (i) identify aggregate stability tests that give a reliable description of the soil's ... -
Agricultura de Precisión: ¿Qué se oculta detrás del nombre?
(New Ag International SARL, 2017-01-01)El término Agricultura de Precisión (AP) se ha discutido mucho durante los últimos años en exhibiciones y conferencias sobre agricultura, encuentros profesionales, revistas y cafés. Por otra parte también se usan expresiones ... -
Ammonia emissions from different fertilizing strategies in Mediterranean rainfed winter cereals
(Elsevier, 2014)Anthropogenic ammonia (NH3) emissions mainly result from agricultural activities where manure spreading plays a significant role. For a Mediterranean rainfed winter cereal system there is a lack of data regarding NH3 ... -
An advanced method based on surface renewal theory to estimate the friction velocity and the surface heat flux
(American Geophysical Union, 2018)The earlier formulation based on surface renewal (SR) analysis for estimating the sensible (or buoyant) heat flux (H) of a surface without requiring calibration involved canopy parameters to simultaneously estimate H and ... -
An appraisal of the sediment yield in western Mediterranean river basins
(Elsevier, 2016)The number of studies assessing soil erosion and sediment transport has increased with the aim of achieving sustainable land and water management. Mediterranean rivers have been the object of many of these studies due to ... -
An experimental study of a new hybrid jet impingement/micro-channel cooling scheme
(Elsevier, 2010-10)A new hybrid cooling scheme is proposed for high heat flux management and power devices. This scheme combines the benefits of micro-channel and jet impingement cooling technologies, with the additional objective of improving ... -
Analysis of vineyard differential management zones and relation to vine development, grape maturity and quality
(Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (Espanya), 2012)The objective of research was to analyse the potential of Normalized Difference Vegetation Index (NDVI) maps from satellite images, yield maps and grapevine fertility and load variables to delineate zones with different ... -
Análisis de la comunicación de experiencias indagadoras presentadas en congresos de ciencias dirigidos a alumnos de educación infantil y primaria
(Asociación de Profesores Amigos de la Ciencia Eureka, 2017)La indagación científica es una de las estrategias que mejores resultados ha aportado a la enseñanza de las ciencias experimentales. En vista de la necesidad de impulsar este tipo de metodologías, en los últimos años, se ... -
Análisis de la evapotranspiración a escala local y regional en Cataluña
(Universidad Politécnica de Valencia, 2002)Con el objetivo de disponer de una metodología adecuada para la correcta gestión de los recursos hídricos a nivel regional, en este trabajo se analiza la evapotranspiración de referencia (ETo) en la zona de Cataluña y parte ...