Efeito da posição do prematuro no desmame da ventilação mecânica

Objective: the purpose of this study was to determine the effects of prone positioning on cardiorespiratory stability and weaning outcome of preterm infants during weaning from mechanical ventilation. Methods: from January to December 1999, a sample of 42 preterm infants, with birthweight < 2,000 g, mechanically ventilated in the first week of life, were randomly divided, in the beginning of the weaning process, in two groups according to the position: supine position (n = 21) or prone position (n = 21). Heart rate, respiratory rate, transcutaneous oxygen saturation and ventilatory parameters were recorded every one hour. Length of the weaning process and complications were also assessed. Results: in both groups the mean gestational age was 29 weeks, most of the patients presented very low birthweight and respiratory distress syndrome. The mean length of the weaning process was 2 days. There were no differences between the groups regarding respiratory rate, heart rate and transcutaneous oxygen saturation, however, oxygen desaturation episodes were more frequent in supine position (p = 0.009). Ventilatory parameters decreased faster and reintubation was less frequent in the prone group (4% versus 33%). No adverse effects of prone positioning were observed. Conclusion: these results suggest that prone position is a safe and beneficial procedure during the weaning from mechanical ventilation and may contribute to weaning success in preterm infants.

Diagnóstico de uma área compactada por atividade minerária, na floresta amazônica, empregando métodos geoestatísticos à variável resistência mecânica à penetração do solo

A quite common problem in the recovery of degraded areas in the mineral exploration understands the compaction of the soil due to the intense traffic of machines and earth movement. The most common problem of the compaction of a degraded surface is: increase of the mechanical resistance to the penetration of the rooats, reduction of the aeration, alteration of the water flow and heat. Thus the present work had the basic objective of diagnosing the compaction of a degraded area by mining in a space way, through the mechanical resistance the way penetration to guide a future subsoiling in the place seeking recovery. Through the studies it was concluded that the kriging method in agreement with the space variation allows the division of the area studies in sub areas facilitating a future work to reduce cost and unnecessary interference to the atmosphere. The method was shown quite appropriate and it can be used in diagnosis of the compaction in a degraded area by mining, foreseeing subsoiling need.

Las dimensiones socioeconómicas de la desertificación: avances en la utilización de indicadores: un ejercicio en el caso de Mendoza, Argentina

Incluye Bibliografía

Los cuadros de oferta y utilización, las matrices de insumo-producto y las matrices de empleo

Incluye bibliografía

La utilización del muestreo en los censos de población y vivienda

Incluye Bibliografía

La utilización de las encuestas de uso del tiempo en las políticas públicas

Incluye Bibliografía

Viabilidad económica de la utilización de biogás para la conversión en energía eléctrica

The economic viability of the electrical power generation using biogas from swine wastes, was determined. The analyzed biodigester is a continuous tubular model with brick concrete duct and plastic covering with a gasometer, in which the waste of 2.300 fattening pigs are deposited daily. The initial investment estimate for the installation was R$ 51.537, the system annual costs were R$ 5.700, for maintenance, R$ 4.400 for depreciation and R$ 1.370 for interests. It was found that an average consumption of 28 kW-hour-1 is the minimum that the system must reach to be economically feasible.

Sociodemografía con microdatos censales: su uso en mercadotecnia y en las decisiones empresariales (con especial referencia a la utilización de microdatos censales para la estratificación socioeconómica de hogares y territorios)

Incluye Bibliografía

Utilización de informaciones estadísticas en investigaciones demográficas sobre Chile realizadas por CELADE

Incluye Bibliografía

Programas de planificación de la familia: algunas tabulaciones recomendables y su utilización

Incluye Bibliografía

La utilización de la información demográfica y los estudios de población en la planificación

Incluye Bibliografía

DOCPAL. Manual No 2: Procedimiento para la utilización de la tarjeta de registro bibliográfico

El Manual describe el uso y alcance de la Tarjeta de Registro Bibliografico (TRB), utilizada en DOCPAL para consignar los elementos que describen un determinado documento.

DOCPAL. Manual No 4: Procedimiento para la indización de documentos y utilización del Tesauro multilingüe sobre población en un sistema manual de documentación""

El Manual recoge la experiencia de DOCPAL/CELADE en la indizacion de los documentos ingresados a la base de datos y se orienta a servir de guia a las unidades de informacion que han adoptado tecnicas manuales o semi-mecanizadas para el tratamiento de la misma en la region. Previa la presentacion de las definiciones basicas, se discute el marco de referencia y las caracteristicas del proceso de indizacion. La descripcion de los instrumentos y pautas pone enfasis en la utilizacion del Tesauro Multilingue sobre Poblacion para el analisis de la informacion y en las Tarjetas Unitermino, para el registro del proceso.