967 resultados para Segovia-Grabado
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El presente Plan Parcial tiene como objeto el desarrollo del nuevo sector urbanizable UZD-R-32-S “La Mina”, no contemplado actualmente en el Plan General de Ordenación Urbana de Segovia, por lo que sería necesaria una modificación del Plan (uno de los objetos de este proyecto es la modificación puntual del PGOU de Segovia para reclasificar el suelo). El terreno que lo compone en la actualidad es Urbano Consolidado, Urbano no Consolidado, Rústico Común y Rústico de Protección Natural. Este sector tiene una superficie de 34,1949 ha y está situado en el municipio de Segovia (Comunidad Autónoma de Castilla y León), más concretamente en el barrio de San Lorenzo. Está limitado por la N-110, Límite Municipal de La Lastrilla, Límite Municipal de San Cristóbal de Segovia, Río Ciguiñuela y Avenida Vía Roma.
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Martí Grajales atribuye la obra al P. Raimundo Alafont
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Mención de responsabilidad tomada del texto introductorio
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Las aplicaciones tecnológicas obtenidas a partir de sensores láser aerotransportados (Airborne Laser Scanner, ALS), han supuesto una gran expectativa para mejorar la calidad de los datos del inventario forestal, mediante su actualización y la posible disminución de los costes de inventario. Sin embargo, todavía existen problemas de aplicación que no están resueltos de manera que su empleo como sustitutivo de un inventario tradicional presenta algunas incógnitas, tanto de carácter técnico como económicas. Por ello, en este trabajo se va a realizar un estudio analítico de costes de utilización, teniendo en cuenta los objetivos del inventario y las limitaciones de la técnica. El caso de estudio se sitúa en el Pinar de Valsaín (Segovia).
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El pasado día 4 de abril tuvimos la oportunidad de probar un nuevo T6.160 AutoCommand en tierras de Cantalejo, Segovia. Se han realizado dos tipos de tarea con el tractor: preparación del lecho de siembra con una grada rotativa y transporte de un remolque cargado. La parcela tenía una textura fuertemente arenosa típica de la zona y se encontraba en un estado de tempero óptimo. En las distintas pruebas se ha evaluado el modo automático frente al manual. Veamos sus resultados.
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A methodology is described for understanding the interaction of karstic aquifers with allogenic rivers, where little information is available. This methodology includes conventional hydrogen- ology methods tracer tests and measurements of flow into, out of and circulating within the karstic system. The method is designed to un- derstand the hydrogeological behaviour of a river in sufficient detail, given a short study pe- riod. The methodology is applied to a karstic system in Spain, obtaining useful, quantitative results for a hydrological year, such as an esti- mate of the water balance, differentiation be- tween autogenic and allogenic natural recharge, relationship and connection between the river and the aquifer, and measurements of infiltration capacity in watercourses under different hydro- logical situations. The paper deals with a useful example that could be applied to other rivers and aquifers where few data are available. It can be applied to aquifers under a natural regime and Mediterranean climate.
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Arrays of coherently driven photomixers with antenna (antenna emitter arrays, AEAs) have been evaluated as a possibility to overcome the power limitations of individual conventional photomixers with antenna (?antenna emitters?, AEs) for the generation of continuous-wave (CW) THz radiation. In this paper, ?large area emitters? (LAEs) are proposed as an alternative approach, and compared with AEAs. In this antenna-free new scheme of photomixing, the THz radiation originates directly from the acceleration of photo-induced charge carriers generated within a large semiconductor area. The quasi-continuous distribution of emitting elements corresponds to a high-density array and results in favorable radiation profiles without side lobes. Moreover, the achievable THz power is expected to outnumber even large AEAs. Last not least, the technological challenge of fabricating LAEs appears to be significantly less demanding.
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Precede al tít.: Iesus, Maria, Ioseph
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Using CMOS transistors for terahertz detection is currently a disruptive technology that offers the direct integration of a terahertz detector with video preamplifiers. The detectors are based on the resistive mixer concept and its performance mainly depends on the following parameters: type of antenna, electrical parameters (gate to drain capacitor and channel length of the CMOS device) and foundry. Two different 300 GHz detectors are discussed: a single transistor detector with a broadband antenna and a differential pair driven by a resonant patch antenna.
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Precede al tít.: Jesus, Maria, y Joseph
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Grab. calc.: "Lamina que manifiesta el Trono del SS. Sacramento en las horas de la Iglesia de los Stos. Juanes de Valencia a[ño] 1828 ; grabado por Rocafort en Val.a"
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We discuss two different approaches to overcome the power limitations of CW THz generation imposed to conventional photomixers. The increase in power achievable by using arrays of AEs is studied. Then ?large area emitters? are proposed as an alternate approach to overcome the power limitations. In this antenna-free new scheme of photomixing, the THz radiation originates directly from the acceleration of photo-induced charge carriers generated within a large semiconductor area. The quasi-continuous distribution of emitting elements corresponds to a high-density array and results in particularly favorable radiation profiles.
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Using CMOS transistors for terahertz detection is currently a disruptive technology that offers the direct integration of a terahertz detector with video preamplifiers. The detectors are based on the resistive mixer concept and performance mainly depends on the following parameters: type of antenna, electrical parameters (gate to drain capacitor and channel length of the CMOS device) and foundry. Two different 300 GHz detectors are discussed: a single transistor detector with a broadband antenna and a differential pair driven by a resonant patch antenna.
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