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The association of asthma, nasal allergies, and positive skin prick tests with ...

Background Cross-sectional and longitudinal reports show that obese adults have more asthma than non-obese adults. A proposed mechanism is via effects of adipokines (leptin and adiponectin) on the immune system. Objective We wished to measure the associations of asthma and other atopic diseases with serum adipokine levels and to find whether the associations with asthma were strong enough to rule out the possib...

In vitro degradation and in vivo biocompatibility of chitosan-poly(butylene suc...

In tissue engineering, the evaluation of the host response to the biomaterial implantation must be assessed to determine the extent of the inflammatory reaction. We studied the degradation of poly(butylene succinate) and chitosan in vitro using lipase and lysozyme enzymes, respectively. The subcutaneous implantation of the scaffolds was performed to assess tissue response. The type of inflammatory cells present...

Avaliação das Características da População de uma Unidade de Cuidados Intensivo...

A preocupação da sociedade com o direito de utilização e acesso a cuidados de saúde com qualidade torna a avaliação da «qualidade» num aspecto com crescente importância nos sistemas de saúde.O presente estudo pretendeu avaliar as características da população assistida na Unidade de Cuidados Intensivos Pediátricos do H. S. João (UCIP) durante um período de seis anos (1995-2000), bem como as taxas de mortalidade ...

Treat to target: temporomandibular joint (TMJ) arthritis in children with juven...

Cardiac magnetic resonance stress perfusion: A single-center study

INTRODUCTION AND OBJECTIVES: Myocardial ischemia can be assessed with cardiac magnetic resonance perfusion imaging (MRPI). This study aimed to analyze the clinical utility of MRPI in the diagnosis of significant coronary artery disease. METHODS: Fifty-five patients were examined with a 1.5 T MR scanner (Siemens Symphony), with a first pass of 0.10 mmol/kg gadolinium chelate, at rest and during adenosine vasodil...

Lousal, Portugal : património geológico e mineiro de uma antiga mina na Faixa P...

Visita à antiga mina de sulfuretos, Lousal

Brochura técnica do Projecto Atlanterra - Interreg Espaço Atlântico

Water management in a passive direct methanol fuel cell

Passive direct methanol fuel cells (DMFCs) are under development for use in portable applications because of their enhanced energy density in comparison with other fuel cell types. The most significant obstacles for DMFC development are methanol and water crossover because methanol diffuses through the membrane generating heat but no power. The presence of a large amount of water floods the cathode and reduces ...

Simulation of a stand-alone residential PEMFC power system with sodium borohydr...

Catalytic hydrolysis of sodium borohydride (NaBH4) has been investigated as a method to generate hydrogen for fuel cell applications. The high purity of the generated hydrogen makes this process a potential source of hydrogen for polymer electrolyte membrane fuel cells (PEMFCs). In this paper, a PEMFC power system employing a NaBH4 hydrogen generator is designed to supply continuous power to residential power ...

Experimental and modeling studies of a micro direct methanol fuel cell

The Direct Methanol Fuel Cell (DMFC) has attracted much attention due to its potential applications as a power source for transportation and portable electronic devices. Based on the advantages of the scaling laws, miniaturization promises higher efficiency and performance of power generating devices and the MicroDMFC is therefore an emergent technology. In this work, a set of experiences with a MicroDMFC of 2....