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basis function » based function (Expander búsqueda), brain function (Expander búsqueda)
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basin basis » basins basin (Expander búsqueda), basin based (Expander búsqueda), basin brazil (Expander búsqueda)
1
artículo
Publicado 2021
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The present study was carried out at the confluence of the Baños, Minascocha and Quilla micro-basins; which belongs to the upper part of the Chancay-Huaral basin, in order to identify the areas of greatest vulnerability to high intensity rainfall phenomena (floods). For the modeling of this section, the flows obtained by means of the SWAT software were used. The flood simulation was carried out using the IBER V2.5 software, which is free software, which is used to simulate floods in shallow waters, that is, shallow waters. The files used were satellite images, DEM files, maximum flows. The Geographic Information Systems were also used: ArcGis 10.5, QGIS 3.8.2, SASPLANET, GLOBALMAPER. The mathematical basis was the two-dimensional equations of St. Venant, which incorporates the turbulence and friction of the flow. The results are shown in three strategic points at the exit of the headwat...
2
artículo
Publicado 2017
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The aim of the following review is to describe the seasonal reproductive behavior in male and female ungulates, and identify the determinants of reproductive synchrony. Intrinsic and extrinsic factors that influence the reproductive seasonality of ungulates analyzed. Intrinsic factors are related to the same individual such as genotypic and phenotypic characteristics, and implies that the reproductive aspects can not be extrapolated between species and breeds, and are modified by the action of external factors such as photoperiod, availability of food, temperature, latitude, among others. Among these factors are identified primarily photoperiod and food availability. The photoperiod and food availability are the main signals that determine melatonin levels, and this modulates the reproductive function. Photoperiod is related to the intensity of light and darkness that animals are exposed...
3
artículo
Publicado 2017
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The aim of the following review is to describe the seasonal reproductive behavior in male and female ungulates, and identify the determinants of reproductive synchrony. Intrinsic and extrinsic factors that influence the reproductive seasonality of ungulates analyzed. Intrinsic factors are related to the same individual such as genotypic and phenotypic characteristics, and implies that the reproductive aspects can not be extrapolated between species and breeds, and are modified by the action of external factors such as photoperiod, availability of food, temperature, latitude, among others. Among these factors are identified primarily photoperiod and food availability. The photoperiod and food availability are the main signals that determine melatonin levels, and this modulates the reproductive function. Photoperiod is related to the intensity of light and darkness that animals are exposed...
4
artículo
Publicado 2017
Enlace
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The aim of the following review is to describe the seasonal reproductive behavior in male and female ungulates, and identify the determinants of reproductive synchrony. Intrinsic and extrinsic factors that influence the reproductive seasonality of ungulates analyzed. Intrinsic factors are related to the same individual such as genotypic and phenotypic characteristics, and implies that the reproductive aspects can not be extrapolated between species and breeds, and are modified by the action of external factors such as photoperiod, availability of food, temperature, latitude, among others. Among these factors are identified primarily photoperiod and food availability. The photoperiod and food availability are the main signals that determine melatonin levels, and this modulates the reproductive function. Photoperiod is related to the intensity of light and darkness that animals are exposed...
5
artículo
Publicado 2017
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The aim of the following review is to describe the seasonal reproductive behavior in male and female ungulates, and identify the determinants of reproductive synchrony. Intrinsic and extrinsic factors that influence the reproductive seasonality of ungulates analyzed. Intrinsic factors are related to the same individual such as genotypic and phenotypic characteristics, and implies that the reproductive aspects can not be extrapolated between species and breeds, and are modified by the action of external factors such as photoperiod, availability of food, temperature, latitude, among others. Among these factors are identified primarily photoperiod and food availability. The photoperiod and food availability are the main signals that determine melatonin levels, and this modulates the reproductive function. Photoperiod is related to the intensity of light and darkness that animals are exposed...
6
tesis de grado
Publicado 2024
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El trabajo de investigación tiene como objetivo detectar anomalías geoquímicas en la subcuenca del Alto Marañón mediante el diseño e implementación de redes neuronales artificiales. Los resultados de la investigación se comparan con los publicados por el Servicio Geológico del Perú. La metodología aplicada en la investigación inicia con el entendimiento geológico de la subcuenca, teniendo en cuenta la geología regional del sector, la litología, la geología estructural y la geología económica; asimismo los yacimientos mineros existentes y proyectos. Con el entendimiento geológico del sector se analiza la información de los resultados de los análisis químicos de los sedimentos de quebrada y se elige los elementos pathfinders para la detección de anomalías geoquímicas, se realiza el tratamiento estadístico de los datos convertidos a base logarítmica para establece...
7
artículo
Publicado 2009
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El presente artículo forma parte del proyecto “MONITOREO DE LOS ECOSISTEMAS AGRICOLAS Y NATURALES EN LA REGION PIURA DESDE LAS TECNOLOGIAS: TELEDETECCION Y SISTEMAS DE INFORMACION GEOGRAFICA”. El objetivo de este trabajo es dar a conocer con la metodología utilizada desde (imágenes de satélite multitemporales LANDSAT y ASTER) y demostrar la importancia del análisis del índice de vegetación (NDVI). En este sentido, se ha logrado establecer patrones fenológicos de producción y crecimiento para los principales ecosistemas agrícolas y naturales en la cuenca del rio Chira: bosque seco de montaña, Bosque llanura, matorral, agricultura y suelo desnudo y/o desprotegido. Para ello se han analizado y procesado imágenes de satélite con el fin de seleccionar áreas de muestreo de valores de NDVI. Una vez seleccionados y colectados los valores de NDVI para las imágenes en distintas ...
8
tesis doctoral
Publicado 2019
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La investigación tuvo como objetivo la valorización melisopalinológica, físico-química, sensorial de miel y contenido polínico obtenido por Apis mellifera, en base a oferta floral de cinco pisos altitudinales de la cuenca del rio Mayo, San Martín durante los años 2015, 2016 y 2017. El análisis melisopalinológico refiere la metodología de Louveaux y acetólisis de Erdtman para identificación a nivel de familia de granos de polen; el color de mieles mediante índice de cromaticidad, azúcares reductores por cromatografía líquida. Según el origen geográfico y botánico se caracterizaron cinco grupos de miel: Lamas multiflora, con predominancia de Pouteria sp, (32,17%), Faboideae (14,1%), Moracea-Urticaceae (13,7%), y Solanaceae (10,33%), Juan Guerra, monofloral, con predominancia de Poaceae (45,36%), Escalloniaceae (32%) y Vitaceae (12%), Las Palmas, multiflora, con predomin...
9
tesis de grado
Publicado 2016
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Universidad Nacional Agraria La Molina. Facultad de Ingeniería Agrícola. Departamento Académico de Recursos Hídricos
10
artículo
Publicado 2025
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Generating agricultural suitability analyses that are objective, consistent, and accessible through digital platforms remains a technical and methodological challenge, creating an information gap for certain stakeholders. To address this issue, we assessed the territorial suitability of the Cajamarca region for coffee and cocoa cultivation using 18 subcriteria grouped into climatic, edaphological, topographic, and socioeconomic categories. To reduce subjectivity and improve consistency in variable comparisons, we applied multicriteria evaluation techniques, including the analytical hierarchy process (AHP) and Shannon entropy method. On the basis of the resulting weights, suitability models were generated using two approaches: one based on threshold reclassification and another using continuous suitability functions. Both approaches were validated using 3886 presence points for coffee and...
