Tempo utilizado en el sistema de asistencia de enfermería después de la implementación del sistema del lenguaje patrón

Este estudo, exploratório-descritivo prospectivo, objetivou analisar o efeito da mudança do modelo do Sistema de Assistência de Enfermagem (SAE), com a introdução de classificação de diagnósticos de enfermagem, no tempo despendido pela enfermeira na realização desse Sistema, identificando o tempo estimado e o medido (cronometrado). A amostra foi constituída por 42 enfermeiras, em média, com 11 anos de experiência profissional, de diferentes unidades do HU-USP, sendo observadas, cinco vezes, em média, executando as fases do SAE. Os dados foram coletados no período de agosto/2005 a fevereiro/2006, após a introdução e sedimentação da classificação de diagnóstico de enfermagem. Os resultados evidenciaram que o tempo estimado pelas enfermeiras foi significativamente maior ao tempo medido e que o tempo despendido com a avaliação do paciente foi, em média, maior na admissão do paciente em relação ao seu seguimento.This prospective, exploratory-descriptive study was aimed at analyzing the results of the change of model of the Nursing Assistance System (SAE), with the introduction of a nursing diagnosis classification, on the time spent by the nurse in the realization of this system, identifying the estimated time and the measured time. The study was based on a sample of 42 nurses from different units of the University of São Paulo's Hospital Universitário, with in average 11 years of professional experience, who were observed in average 5 times while carrying out the phases of the SAE. The data were collected from August, 2005 to February, 2006, after the introduction and consolidation of the nursing diagnosis classification. The results showed that the time estimated by the nurses was significantly longer than the time actually measured; and that the time spent for patient evaluation was, on average, longer during his/her admission compared to the follow-up.En este estudio, exploratorio-descriptivo prospectivo, se tuvo como objetivo analizar el efecto de cambio del modelo del Sistema de Asistencia de Enfermería (SAE), con la introducción de la clasificación de diagnósticos de enfermería, en el tiempo utilizado por la enfermera en la realización de ese Sistema, identificando el tiempo estimado y el medido (cronometrado). La muestra estuvo conformada por 42 enfermeras, en promedio, con 11 años de experiencia profesional, de diferentes unidades del HU-USP, siendo observadas, cinco veces, en promedio, cuando ejecutaban las fases del SAE. Los datos fueron recolectados en el período de agosto/2005 a febrero/2006, después de la introducción y sedimentación de la clasificación del diagnóstico de enfermería. Los resultados permitieron evidenciar que el tiempo estimado por las enfermeras fue significativamente mayor al tempo medido y que el tiempo gastado en la evaluación del paciente fue, en promedio, mayor en la admisión del paciente en relación a su seguimiento

Family of quadratic differential systems with invariant hyperbolas: a complete classification in the space R12

In this article we consider the class QS of all non-degenerate quadratic systems. A quadratic polynomial differential system can be identified with a single point of R12 through its coefficients. In this paper using the algebraic invariant theory we provided necessary and sufficient conditions for a system in QS to have at least one invariant hyperbola in terms of its coefficients. We also considered the number and multiplicity of such hyperbolas. We give here the global bifurcation diagram of the class QS of systems with invariant hyperbolas. The bifurcation diagram is done in the 12-dimensional space of parameters and it is expressed in terms of polynomial invariants. The results can therefore be applied for any family of quadratic systems in this class, given in any normal form

Evaluation of solvent extraction by ultrasound by using high performance liquid chromatography for the determination of polycyclic aromatic hydrocarbons in contaminated soils

A method using ultrasonication extraction for the determination of 17 polycyclic aromatic hydrocarbons (PAHs), selected by the USEPA and NIOSH as "consent decree" priority pollutants, in soil by High Performance Liquid Chromatography (HPLC) was studied. Separation and detection were completed in 20 min with a C18 columm, acetonitrile-water gradient elution and ultraviolet absorption and fluorescence detections. The detection limits, for a 10 µL of solution injection, were less than 9,917 ng/g in UV detection and less than 1,866 ng/g in fluorescence detection. Several organic solvents were tested for extraction of the 17 PAHs from soils. Acetone was the best solvent among the three solvents tested, and the order of the extraction efficiencies was: acetone>methanol>acetonitrile. Ultrasonication using acetone as solvent extraction was used to evaluate the biodegradation of those compounds in contaminated soil during a vermicomposting process