Determinacion de la relacion entre la satisfaccion hidrica y los rendimientos del maiz (Zea mays L.) en la cuarta region

El presente trabajo de investigación se llevó a cabo en la IV región del pais con el fin de obtener una relación entre los diferentes grados de abastecimiento hídrico y los rendimientos del cultivo del maiz, variedad NB-6, para asi poder dar un mejor uso de los recursos hidricos (en nuestro caso las precipitaciones) mediante la determinación de fechas de siembra con el menor riesgo posible de pérdidas económicas. Nos encontramos con la limitante de trabajar con un número no muy grande de muestras debido a perdida de información (registros incompletos) y además de trabajar con solamente un ciclo de producción disminuyendo esto la variabilidad de los datos. Se logró validar efectivamente un modelo de balance hidríco para las condiciones especificas del año en estudio < 1989) y se encontró una relación clara, aunque no rígida, entre el indice de satisfacción hidrica del cultivo y los rendimientos obtenidos en ese año. Sin embargo, se recomienda utilizar modelos mas precisos para este tipo de investigación y repetirlo sobre una serie mayor de años. Por ahora, solo contamos con esta relación obtenida y de utilización reservada.

A generalized wave action conservative equation for the dissipative dynamical system in the nearshore region

To describe the various complex mechanisms of the dissipative dynamical system between waves, currents, and bottoms in the nearshore region that induce typically the wave motion on large-scale variation of ambient currents, a generalized wave action equation for the dissipative dynamical system in the nearshore region is developed by using the mean-flow equations based on the Navier-Stokes equations of viscous fluid, thus raising two new concepts: the vertical velocity wave action and the dissipative wave action, extending the classical concept, wave action, from the ideal averaged flow conservative system into the real averaged flow dissipative system (that is, the generalized conservative system). It will have more applications.

The MBA-LBA I period in the Kourion region : new evidences from Erimi- Laonin tou Porakou (Lemesos, Cyprus)

The evidence from Erimi-Laonin tou Porakou within the Kouris valley settlement system can offer further new data to outline a picture of the development trends from MBA to LBA I periods in the Kourion region. As to this area, such a “transitional” phase could be particularly relevant to better understand the development process of the mature LBA II–III urban centers (in Alassa as well as the most recent discovered in Erimi-Pitharka). In 2008–2009 a focus investigation (an intensive survey, geoperspections and excavations) within the Kouris Valley Project has been addressed to the site of Erimi-Laonin tou Porakou, which lies on one of the highest hilltops facing southward the Kouris dam. The excavations evidenced a double circuit wall which surrounds the top mound and the lower terrace. The top mound (Area A) has been widely occupied by a complex workshop, directly linked with a storage area. The natural limestone bedrock has been worked out to arrange a system of carved deep basins connected each other by a series of flow channels. Southward from the workshop, a large storage area has been cleared, with a relevant assemblage of big pithoi and storage devices. The first lower terrace area (Area B) has been possibly occupied by a domestic quarter; a cemetery area (Area E) has been also evidenced outside the external circuit wall, where a series of five rock-cut tombs (Tombs 228– 232) with single chamber and small incoming dromoi has been excavated.