Observatorio habitacional en la ciudad de São Paulo, instrumento de gestión y operación

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El censo de población como una operación integral: etapas preparatorias, trabajo de campo, procesamiento, análisis y difusión de resultados

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Condiciones y características de operación de la industria minera en América Latina, durante el bienio 2004-2005

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Programas de transferencias condicionadas. Sugerencias para mejorar su operación e impacto

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Coeficiente de operación de un sistema formado por un refrigerador doméstico acoplado a un acumulador de agua caliente para la recuperación de energía

An experimental apparatus containing a domestic refrigerator coupled to a vertical hot water storage tank was used for energy recovery. The original condenser of the refrigerator was maintained, but modified with a concentric tubes heat exchanger with countercurrent water and refrigerating gas flows. The coefficient of performance for the heat pump is calculated by the ratio of energy in the heat storage and the electric power consumed by the domestic refrigerator compressor. The results show that the increasing of hydrostatic pressure in the storage tank increases the water flow rate and the coefficient of performance. The proposed device also reduces the heat dissipation to the surroundings. This is more important in small confinements found in low-cost houses.

Manual de operación y metodologías: tomo I: operación del Banco de Proyectos de Inversión Nacional

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Multiple ornamental uses of Costus stenophyllus standi. & L.O. Williams

Costus stenophyllus or bamboo costus, despite its high ornamental potential, is still little known in the cut flower and ornamental plant market. The bamboo costus is a spiral ginger admired for its beautiful stems that are lined with brown colored alternating bands. This costus has rather straight and upright stems. Conical red inflorescences, which resemble the head of a snake, emerge from the base of the plants. The flowers are light yellow and emerge between the red scales on the rather long-lasting, attractive inflorescences. This study was carried out to evaluate the possibility of using these species as a garden plant, cut flower and cut stem. Thus, the characterization was made based on 28 characters of the plant, the leaves, the flower stem, the flowers, as well as season blooming characteristics and flower postharvest longevity.

Assessment of clinical scoring systems for the diagnosis of Williams-Beuren syndrome

Williams-Beuren syndrome (WBS) is a genetic disorder characterized by physical and intellectual developmental delay, associated with congenital heart disease and facial dysmorphism. WBS is caused by a microdeletion on chromosome 7 (7q11.23), which encompasses the elastin (ELN) gene and about 27 other genes. The gold standard for WBS laboratory diagnosis is FISH (fluorescence in situ hybridization), which is very costly. As a possible alternative, we investigated the accuracy of three clinical diagnostic scoring systems in 250 patients with WBS diagnosed by FISH. We concluded that all three systems could be used for the clinical diagnosis of WBS, but they all gave a low percentage of false-positive (6.0-9.2%) and false-negative (0.8-4.0%) results. Therefore, their use should be associated with FISH testing. © FUNPEC-RP.

Estudio sobre interconexión eléctrica del Istmo Centroamericano: informaciones básicas para los estudios de desarrollo a largo plazo y de operación simulada

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Proyecto regional de interconexión eléctrica del Istmo Centroamericano: informaciones básicas para los estudios de desarrollo a largo plazo y de operación simulada

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Observaciones sobre la operación portuaria de Puerto Barrios, Guatemala

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