Download or read book Modelos matem ticos del r gimen de humedad de los suelos written by Eusebi Jarauta Bragulat and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelos matem ticos del r gimen de humedad de los suelos Aplicaci n a la determinaci n del r gimen de humedad de los suelos del rea meridional de Lleida written by and published by . This book was released on 1905 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: La aplicación del modelo simulativo de f. Newhall (1976) a series de datos climáticos, del área meridional de Lleida, produce la aparición generalizada del régimen de humedad USTIC. Tal resultado es incoherente con las características de los suelos del clima de esta comarca y ha motivado la elaboración de un nuevo modelo simulativo del régimen de humedad de los suelos, cuyas características principales son: - considerar varios tipos de perfil de suelo. - posibilidad de utilizar datos de precipitación diaria o mensual. - tiene en cuenta la infiltración real del agua de lluvia. - tiene en cuenta las características de los suelos para modelizar los procesos de infiltración y evapotranspiración. - coinciden muy satisfactoriamente los resultados experimentales con los obtenidos mediante el modelo. El modelo simulativo propuesto da como resultado que el regimen de humedad de los suelos del área meridional de Lleida es XEREIC-I y ARIDIC en los de menos capacidad de retención de agua. __________________________________________________ Lack of irrigation water in southern Lleida (north-east of Spain) restricts the possibilities of an intensive use of soils. To better this situation we need a good information about soil moisture contents, Esther in the present situation or in a future implantation of some irrigation methods. The present research has been developed from 1984 to 1988. Its first aim has been to study the soil moisture contents in the above mentioned area during these years . The soil moisture contents has been determined in order to establish the real situation of the moisture control section; from twenty-two initial control points we selected two representative ones. The second aim has been to determine the moisture regimes of soils in the above mentioned area in order to determine its classification as Soil Taxonomy (USDA 1975) is concerned, to avoid the problems that arose from the fact of not knowing whether the regime was Aridic or not. In this research, Fr.
Download or read book Modelos matem ticos del r gimen de humedad de los suelos Aplicaci n a la determinaci n del r gimen de humedad de los suelos del rea meridional de Lleida written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: La aplicación del modelo simulativo de f. Newhall (1976) a series de datos climáticos, del área meridional de Lleida, produce la aparición generalizada del régimen de humedad USTIC. Tal resultado es incoherente con las características de los suelos del clima de esta comarca y ha motivado la elaboración de un nuevo modelo simulativo del régimen de humedad de los suelos, cuyas características principales son: - considerar varios tipos de perfil de suelo. - posibilidad de utilizar datos de precipitación diaria o mensual. - tiene en cuenta la infiltración real del agua de lluvia. - tiene en cuenta las características de los suelos para modelizar los procesos de infiltración y evapotranspiración. - coinciden muy satisfactoriamente los resultados experimentales con los obtenidos mediante el modelo. El modelo simulativo propuesto da como resultado que el regimen de humedad de los suelos del área meridional de Lleida es XEREIC-I y ARIDIC en los de menos capacidad de retención de agua. __________________________________________________ Lack of irrigation water in southern Lleida (north-east of Spain) restricts the possibilities of an intensive use of soils. To better this situation we need a good information about soil moisture contents, Esther in the present situation or in a future implantation of some irrigation methods. The present research has been developed from 1984 to 1988. Its first aim has been to study the soil moisture contents in the above mentioned area during these years . The soil moisture contents has been determined in order to establish the real situation of the moisture control section; from twenty-two initial control points we selected two representative ones. The second aim has been to determine the moisture regimes of soils in the above mentioned area in order to determine its classification as Soil Taxonomy (USDA 1975) is concerned, to avoid the problems that arose from the fact of not knowing whether the regime was Aridic or not. In this research, Fr.
Download or read book Modelos matem ticos del r gimen de humedad de los suelos Aplicaci n a la determinaci n del r gimen de humedad de los susleos del rea meridional de Lleida written by Eusebio Jarauta Bragulat and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modificaciones al modelo matem tico propuesto por Newhall F written by Vicente Ibáñez Orts and published by . This book was released on 1983 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modificaciones al modelo matem tico propuesto por F Newhall para la estimaci n del r gimen de humedad del suelo written by V. Ibáñez Orts and published by . This book was released on 1983 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelo matem tico de consolidaci n unidimensional de suelos con humedad superior a la ptima written by and published by . This book was released on 1972 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: El desarrollo de presiones intersticiales durante la construcción de terraplenes, y su disipación en la etapa constructiva, constituyen uno de los aspectos de la Mecánica del Suelo que más literatura ha consumido en los últimos años. Constituye un fenómeno conocido de difícil evaluación analítica cuya incidencia económica en el diseño de presas de tierra es notable, toda vez que exige normalmente un fuerte aumento de los taludes del terraplén. Existen numerosos métodos para el cálculo de la evolución de presiones intersticiales durante la construcción de presas de tierra, pero prácticamente ninguno ha probado tener validez general. Normalmente se utilizan reglas de tipo empírico, extrapolaciones de otras obras similares, o métodos de cálculo que sitúan al proyectista muy del lado de la seguridad y no le permiten analizar la economía de utilizar diferentes soluciones para disminuir el valor de estas acciones. La razón fundamental del presente estado de la técnica en este sector, estriba en la enorme dificultad de cifrar analíticamente el comportamiento de un material, prácticamente desconocido, como es la arcilla compactada. Por otra parte, influyen en el problema un número tan importante de variables, que resulta muy difícil cifrar a prior su valor, dada la aleatoriedad de las mismas una vez puesto en obra el material. De ahí que los más importantes tratados de la materia permanezcan a la expectativa de las futuras investigaciones en mecánica del suelo. A la vista del problema resulta fácil de comprender que sera prácticamente imposible llegar a cifrar su resolución con carácter general mediante la tradicional metodología de acudir a fórmulas matemáticas de aplicación inmediata. Estudios similares al que nos concierne, pero de rango muy inferior en cuanto a número y tipología de variables, abocan ya a ecuaciones diferenciales de elevado grado y no lineales, prácticamente irresolubles en la mayoría de los casos. Dos caminos puede emprender la técnica por consiguiente, acudir a reglas de tipo empírico basadas en un amplio muestreo estadístico de realizaciones similares o bien establecer modelos matemáticos que simulen el comportamiento reológico del material y que permitan en un corto plazo de tiempo analizar el problema, para una gama de los valores más probables que alcanzarán las variables en la obra. El primero, prácticamente utilizado en la actualidad, tropieza con el grave inconveniente de la enorme amplitud de factores que intervienen en el desarrollo de presiones intersticiales y que exigen un elevado número de obras perfectamente controladas para poder establecer las suficientes correlaciones.
Download or read book Bulletin signal tique 381 written by and published by . This book was released on 1981 with total page 1172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Host Bibliographic Record for Boundwith Item Barcode 30112044669122 and Others written by and published by . This book was released on 2013 with total page 2762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status and Trends of Research in Hydrology 1965 74 written by Unesco and published by . This book was released on 1972 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book World Water Balance written by and published by . This book was released on 1972 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symposium on World Water Balance written by and published by . This book was released on 1970 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Glosario Del Banco Mundial written by World Bank and published by World Bank Publications. This book was released on 1996 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition of the World Bank has been revised and expanded by the Terminology Unit in the Languages Services Division of the World Bank in collaboration with the English, Spanish, and French Translation Sections. The Glossary is intended to assist the Bank's translators and interpreters, other Bank staff using French and Spanish in their work, and free-lance translator's and interpreters employed by the Bank. For this reason, the Glossary contains not only financial and economic terminology and terms relating to the Bank's procedures and practices, but also terms that frequently occur in Bank documents, and others for which the Bank has a preferred equivalent. Although many of these terms, relating to such fields as agriculture, education, energy, housing, law, technology, and transportation, could be found in other sources, they have been assembled here for ease of reference. A list of acronyms occurring frequently in Bank texts (the terms to which they refer being found in the Glossary) and a list of international, regional, and national organizations will be found at the end of the Glossary.
Download or read book written by and published by . This book was released on 1969 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bilan Hydrique Mondial written by and published by . This book was released on 1972 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lake Titicaca written by C. Dejoux and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Titicaca, because of its area and volume and its situation at high attitude within the tropics, is a unique hydrological site in the world. It should be noted that it stands at the transition point between two very distinct geographical regions: the desert fringe of the Pacific coast to the west and the great Amazonian forest extending to the Atlantic coast to the east. Many scientists have been attracted to the lake in the past because of its unusual limnological features. In this book the editors have compiled an exhaustive review of current knowledge from the existing literature and from the results of more recent observations. It is certain that this book will become the essential reference work for scientists wanting to make progress in revealing the lake's secrets. It can be stated unequivocally that this work constitutes a complete review of the present state of knowledge on Lake Titicaca and that it provides the latest results of research on this habitat.
