{"id":56089,"date":"2018-03-09T22:43:47","date_gmt":"2018-03-09T22:43:47","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/depivot-modelo-para-el-diseno-y-evaluacion-de-sistemas-pivote-de-riego-por-aspersion\/"},"modified":"2018-03-09T22:43:47","modified_gmt":"2018-03-09T22:43:47","slug":"depivot-modelo-para-el-diseno-y-evaluacion-de-sistemas-pivote-de-riego-por-aspersion","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/santiago-de-compostela\/depivot-modelo-para-el-diseno-y-evaluacion-de-sistemas-pivote-de-riego-por-aspersion\/","title":{"rendered":"Depivot: modelo para el dise\u00f1o y evaluaci\u00f3n de sistemas pivote de riego por aspersion"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mar\u00eda  Isabel Valin Sanjiao <\/strong><\/h2>\n<p>Los sistemas pivote se caracterizan por poseer un elevado grado de automatizaci\u00f3n y altos valores de uniformidad de distribuci\u00f3n y eficiencia de aplicaci\u00f3n, cuando el sistema esta bien dise\u00f1ado y bien manejado. durante las campa\u00f1as de riego de los a\u00f1os 2000-2001-2002 se realizaron un total de 12 evaluaciones de campo. Los resultados obtenidos revelan problemas a nivel de dise\u00f1o: elevada presi\u00f3n de funcionamiento en los emisores, mala elecci\u00f3n del ca\u00f1\u00f3n en la extremidad distal y err\u00f3nea sustituci\u00f3n de aspersores rotativos por difusores. Problemas referentes a una mala manutenci\u00f3n y manejo del sistema. en la presente tesis se presenta el programa depivot, una herramienta cuyo objetivo es el dise\u00f1o de sistemas p\u00edvote y el c\u00e1lculo de indicadores de calidad de riego en sistemas ya existentes. El programa ha sido desarrollado de visual basic 6.0 incluyendo una base de datos en acess 2003. el programa esta constituido por:     1,- el m\u00f3dulo del dise\u00f1o agron\u00f3mico, donde se calcula la dosis bruta y el caudal de entrada al sistema en funci\u00f3n del suelo y del cultivo.     2,- el m\u00f3dulo del dise\u00f1o hidr\u00e1ulico en donde se calcula la p\u00e9rdida de carga en cada tramo escogido de la base de datos y la variaci\u00f3n de presi\u00f3n en el lateral.     3,- el m\u00f3dulo de dise\u00f1o de la carta de emisores, donde se calcula la presi\u00f3n y el caudal para cada salida de los tramos y se determinan el emisor m\u00e1s adecuado para cada una de ellas.     4,- el m\u00f3dulo del c\u00e1lculo de la escorrent\u00eda superficial, comparando la curva de pluviometr\u00eda y la curva de infiltraci\u00f3n.     5,- el m\u00f3dulo de la evaluaci\u00f3n de sistemas ya en funcionamiento, calculando los indicadores de uniformidad de distribuci\u00f3n (ud) y coeficiente de uniformidad (cu).     para la evaluaci\u00f3n de sistemas en funcionamiento es necesario la recogida de datos de campo en condiciones reales de trabajo.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Depivot: modelo para el dise\u00f1o y evaluaci\u00f3n de sistemas pivote de riego por aspersion<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Depivot: modelo para el dise\u00f1o y evaluaci\u00f3n de sistemas pivote de riego por aspersion <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mar\u00eda  Isabel Valin Sanjiao <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Santiago de compostela<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 15\/12\/2006<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Xan Neira Seijo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Tarjuelo mart\u00edn-benito Jos\u00e9 Mar\u00eda <\/li>\n<li>Luis Teixeira jose (vocal)<\/li>\n<li>Antonio Paz gonzalez (vocal)<\/li>\n<li>bruno Molle (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mar\u00eda Isabel Valin Sanjiao Los sistemas pivote se caracterizan por poseer un elevado grado de automatizaci\u00f3n y [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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