Dinámica del agua del suelo en dos microcuencas ante cambios en el manejo agrícola : en Córdoba, Argentina

Los ambientes semiáridos son más frágiles en cuanto a los recursos, especialmente las lluvias, lo que condiciona la producción agropecuaria. Por lo tanto, deberían aplicarse las buenas prácticas agrícolas. En este trabajo se analizó el cambio provocado por el manejo del suelo en Córdoba, Argentina. Se evaluaron dos microcuencas: una no sistematizada y otra sistematizada con terrazas paralelas de desagüe. El manejo pasó de monocultivo de soja a rotaciones estivales con cultivos de cobertura. Los resultados indicaron que a medida que se intensifica el uso, los valores de agua del suelo en ambas microcuencas son menores. Los períodos de recarga y consumo son más marcados en la microcuenca con terrazas. Es decir, el cambio en el manejo del suelo provocó cambios en la dinámica del agua edáfica en ambas microcuencas.Semi-arid environments are more fragile in terms of resources, especially rainfall, which conditions agricultural production. Good agricultural practices should therefore be applied. This work evaluated the change brought about by soil management in Córdoba, Argentina. Two micro-basins were evaluated: one non-systematized and the other systematized with parallel drainage terraces. Management went from soy monoculture to summer rotations with cover crops. The results indicated that as the use intensifies, the soil water values in both micro-basins are smaller. The periods of recharge and consumption are more marked in the micro-basin with terraces. That is to say, the change in the management of the soil caused changes in the dynamics of the edaphic water in both micro-basins.Fil: Vettorello, C. Universidad Nacional de CórdobaFil: Molina, Ordoñez. Universidad Nacional de CórdobaFil: Esmoriz, G.. Universidad Nacional de Córdob

The AGILE Mission

AGILE is an Italian Space Agency mission dedicated to observing the gamma-ray Universe. The AGILE's very innovative instrumentation for the first time combines a gamma-ray imager (sensitive in the energy range 30 MeV-50 GeV), a hard X-ray imager (sensitive in the range 18-60 keV), a calorimeter (sensitive in the range 350 keV-100 MeV), and an anticoincidence system. AGILE was successfully launched on 2007 April 23 from the Indian base of Sriharikota and was inserted in an equatorial orbit with very low particle background. Aims. AGILE provides crucial data for the study of active galactic nuclei, gamma-ray bursts, pulsars, unidentified gamma-ray sources, galactic compact objects, supernova remnants, TeV sources, and fundamental physics by microsecond timing. Methods. An optimal sky angular positioning (reaching 0.1 degrees in gamma- rays and 1-2 arcmin in hard X-rays) and very large fields of view (2.5 sr and 1 sr, respectively) are obtained by the use of Silicon detectors integrated in a very compact instrument. Results. AGILE surveyed the gamma- ray sky and detected many Galactic and extragalactic sources during the first months of observations. Particular emphasis is given to multifrequency observation programs of extragalactic and galactic objects. Conclusions. AGILE is a successful high-energy gamma-ray mission that reached its nominal scientific performance. The AGILE Cycle-1 pointing program started on 2007 December 1, and is open to the international community through a Guest Observer Program

Implementasi manajemen bimbingan konseling di MAN Binjai

<p>Number of municipalities with yellow fever vaccine recommendations and municipalities in which vaccination against yellow fever was recommended during a yellow fever outbreak, by time period, number of municipalities affected and resident population.</p

KERATOCYST : LITERATURE REVIEW,CASE REPORT AND DIFFERENTIAL DIAGNOSIS WITH GLOBULOMAXILLARY CYST

Aim: This was to underscore the primary importance of histological exams for an accurate differential diagnosis of cystic lesions, based not only on first and second level radiographs, considering the potential relapse of this lesion after its enucleation. Case report The patient complained of a swelling in the right maxillary vestibular region between teeth 11 and 13; the orthopantomograph showed an inverted-drop shaped radiolucent area suggesting a globulomaxillary cyst; the CT Dental Scan confirmed the presence of vestibular resorption. Surgical excision was performed: the lesion appeared rounded and of approximately 1 cm in diameter. The histological examination revealed a cystic lesion covered by keratinized squamous epithelium (parakeratosis)