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6篇 您的检索式:作者名="Guillermo Alonso"
    题名 作者 年代 出处 被引量
1Susceptibility for postmenopausal osteoporosis: interaction be- tween genetic, hormonal and lifestyle factors 显示文摘Pedro Mezquita-Raya Manuel Mufioz-Torres Guillermo Alonso 2004Calcif Tissue Int2004,75,5:1
2The contribution of serum osteoprotegerin to bone mass and vertebral fractures in postmenopausal women显示文摘Pedro Mezquita-Raya Magdalena Higuera Diego Fernández García Guillermo Alonso María Estrella Ruiz-Requena Juan Dios Luna Fernando Escobar-Jiménez Manuel Mu?oz-Torres 2005Osteoporosis International2005,,11:1
3Polymorphisms of antioxidant enzymes, blood pressure and risk of hypertension显示文摘María L Mansego Griselda De Marco Solar Mónica Pineda Alonso Fernando Martínez Guillermo T Sáez Juan C Martin Escudero Josep Redón Felipe J Chaves 2011Journal of Hypertension2011,,3:1
4Alternative approaches for estimating missing climate data:application to monthly precipitation records in South- Central Chile显示文摘Background: Over the last decades interest has grown on how climate change impacts forest resources. However,one of the main constraints is that meteorological stations are riddled with missing climatic data. This study compared five approaches for estimating monthly precipitation records: inverse distance weighting(IDW), a modification of IDW that includes elevation differences between target and neighboring stations(IDWm), correlation coefficient weighting(CCW), multiple linear regression(MLR) and artificial neural networks(ANN).Methods: A complete series of monthly precipitation records(1995-2012) from twenty meteorological stations located in central Chile were used. Two target stations were selected and their neighboring stations, located within a radius of25 km(3 stations) and 50 km(9 stations), were identified. Cross-validation was used for evaluating the accuracy of the estimation approaches. The performance and prediaive capability of the approaches were evaluated using the ratio of the root mean square error to the standard deviation of measured data(RSR), the percent bias(PBIAS), and the NashSutcliffe efficiency(NSE). For testing the main and interactive effects of the radius of influence and estimation approaches,a two-level factorial design considering the target station as the blocking factor was used.Results: ANN and MLR showed the best statistics for all the stations and radius of influence. However, these approaches were not significantly different with IDWm. Inclusion of elevation differences into IDW significantly improved IDWm estimates. In terms of precision, similar estimates were obtained when applying ANN, MLR or IDWm/and the radius of influence had a significant influence on their estimates, we conclude that estimates based on nine neighboring stations located within a radius of 50 km are needed for completing missing monthly precipitation data in regions with complex topography.Conclusions: It is concluded that approaches based on ANN, MLR and IDWm had the best performance in two sectors located in south-central Chile with a complex topography. A radius of influence of 50 km(9 neighboring stations) is recommended for completing monthly precipitation data.Alonso Barrios Guillermo Trincado Rene Garreaud 2018Forest Ecosystems2018,5,4:0
5An interactive tool for visualization and prediction of solar radiation and photovoltaic generation in Colombia显示文摘This paper presents the building process of an interactive instrument called the Colombian Solar Atlas able to easily visualize meteorological data but also assess the current and future potentials of solar photovoltaic generation throughout the whole territory of Colombia,South America.This new tool is based on two different meteorological databases.The first one is done with historical data extracted from satellite imagery information,and the other one corresponds to data issues from regional-scale climate change projection models.The satellite database was validated with different in-situ measurements.The Colombian Solar Atlas uses basic and advanced photovoltaic generation models to estimate the generation of a custom solar installation.With this tool,a user selects a point on the map and can have directly pertinent information to search for an optimal location with a spatial resolution of 4 km2.This tool is the first open interactive online tool particularly adapted to study the photovoltaic power potential in Colombia,considering the country’s needs and native language.Gabriel Narvaez Luis Felipe Giraldo Michael Bressan Camilo A.Guillen María A.Pabón Nicolás Díaz Manuel Felipe Porras Brayan Herney Medina Fernando Jiménez Guillermo Jiménez-Estévez Andres Pantoja Corinne Alonso 2023Big Earth Data2023,7,3:0
6Foliar Analysis as an Estimate on the Nutritional State of Conilon Coffee Plantations on Cambisoils显示文摘Alberto Perez Diaz Emesto Castaneda Hidalgo Salvador Lozano Trejo Carlos Alberto Bustamante Gonzailez Ramon Antonio Rivera Espinosa Geraldo Rodriguez Ortiz Gloria Martha Martin Alonso Cerelino RoblesPerez Guillermo Acosta Coutin Alberto Fernandez Turro 2014Journal of Life Sciences2014,8,2:0
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