Encontrados 42 documentos, a visualizar página 1 de 5

Lombalgia na Criança — A Propósito de Um Caso Clínico

Os autores descrevem o caso clínico de uma criança do sexo feminino, de 2 anos e 9 meses de idade, que inicia em Julho/99, de forma insidiosa, dorso-lombalgia não acompanhada de sintomas constitucionais. Por persistência e agravamento progressivo das queixas álgicas, foi internada no Departamento de Pediatria do H. S. João em Setembro/99. Ao exame objectivo, evidenciava-se rigidez lombar acentuada, com mobiliza...

Electricity cost optimization in a renewable energy

The variable electricity output of the renewable energy sources (RES) power plants, such as wind and hydro power technologies, is seen as an important challenge for the electricity system managers. This paper addresses the problem of an electricity system supported mainly on hydro, thermal and wind power plants, presenting a short-term model planning. A binary mixed integer non-linear optimization model for one...

Prescrição de antimicrobianos no Serviço de Urgência do Hospital de Braga

Medicamentos de importação: uma realidade cada vez mais presente nos Hospitais

In vitro clonal behavior of Olea europaea L., variety Galega vulgar

A multiplicação clonal da cultivar de oliveira Galega vulgar por estacaria semi-lenhosa, é impedida pelas baixas taxas de enraizamento, as quais, segundo alguns autores, não ultrapassam os 10%, originando assim desequilíbrios entre a procura e a oferta bem como preços de mercado mais elevados face a outras cultivares de fácil enraizamento. A micropropagação por rebentação axilar surge como uma técnica alternati...

Short-term scheduling model for a wind-hydro-thermal electricity system

This study addresses the problem of the self-scheduling of an electricity system mainly based on hydro, fossil fuel thermal and wind power plants. A binary mixed integer non-linear optimization model is described and applied to short-term electricity planning of a system close to the expected Portuguese one on the year 2020. The model is written in a GAMS code and a global optimization solver is used to obtain ...

Performance comparison of retailing stores using a Malmquist-type index

Corionicidade e complicações perinatais na gravidez gemelar: casuística de 10 a...

OVERVIEW AND AIMS: Multiple pregnancy accounts for about 3% of all pregnancies. The monochorionic pregnancy presents a relatively constant incidence (1:250 pregnancies) unlike the dichorionic, which is influenced by race, heredity, maternal age, parity and medically assisted procreation. The purpose of this work was to evaluate the impact of chorionicity on perinatal morbidity of twin pregnancy. POPULATION AND ...

Optimization models to support sustainable electricity planning decisions

Over the last decades, models and concepts related to sustainable electricity planning decisions have been changed according to the society, energy policy objectives and concerns. New and clean energy technologies are emerging as major contributors for the achievement of a set of imposed goals, being the energy efficiency combined with renewable energy sources (RES) a key strategy for a sustainable future. Powe...

Strategic electricity planning decisions

Sustainable electricity power planning involves trade-offs between multiple goals. The different attributes of each technology or generation portfolio in terms of the attainment of society goals must be assessed and included in the planning models. Optimization models always played an important role for supporting complex planning decision making, from which the particular case of the electricity industry stand...