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The compatibility of earth-based repair mortars with rammed earth substrates

3rd Historic Mortars Conference, 11-14 September 2013, Glasgow, Scotland ; Earth constructions are susceptible to degradation due to natural or human causes. The degradation of the exterior surface of earth walls is very common, either due to lack of maintenance or to the use of incompatible materials, and often requires the application of a repair mortar. This work analyses experimentally the performance of e...

Avaliação da influência do teor de água na trabalhabilidade de argamassas de terra

Existe atualmente um elevado desconhecimento ao nível da reabilitação e conservação de edificações construídas em terra. Deve usar-se uma argamassa com base em terra, compatível com estes suportes, sendo fundamental conhecer o seu comportamento. A quantidade de água utilizada na amassadura de uma argamassa tem grande influência nas características físicas, na trabalhabilidade e, consequentemente, na sua aplicaç...

Análise experimental de argamassas de terra com cais e fibras naturais

4º Congresso de Argamassas e ETICS, Coimbra, 2012 (CD-ROM) ; Pretende-se desenvolver e caracterizar argamassas de terra eficientes para reparar anomalias em paredes de taipa. As argamassas estudadas utilizam uma terra comercial (constituída maioritariamente por argila), bem como outros componentes, nomeadamente areia, cal aérea ou cal hidráulica e fibras vegetais. Estas argamassas foram caracterizadas, no esta...

Solving cell infiltration limitations of electrospun nanofiber meshes for tissu...

AIM: Utilize the dual composition strategy to increase the pore size and solve the low cell infiltration capacity on random nanofiber meshes, an intrinsic limitation of electrospun scaffolds for tissue engineering applications. MATERIALS & METHODS: Polycaprolactone and poly(ethylene oxide) solutions were electrospun simultaneously to obtain a dual composition nanofiber mesh. Selective dissolution of the poly(et...

A dynamical model for the fermentative production of fructooligosaccharides

In this paper a detailed mathematical model is presented for the fermentative production of fructo-oligosaccharides with Aspergillus sp. The model accounts for hydrolysis and transfructolization reactions, as well as biomass formation and it contains 27 parameters that were determined from experimental data using a System Biology toolbox with the Simulated Annealing method for curve fitting. Several additional ...

Surface modification of electrospun polycaprolactone nanofiber meshes by plasma...

A critical aspect in the development of biomaterials is the optimization of their surface properties to achieve an adequate cell response. In the present work, electrospun polycaprolactone nanofiber meshes (NFMs) are treated by radio-frequency (RF) plasma using different gases (Ar or O2), power (20 or 30 W), and exposure time (5 or 10 min). Morphological and roughness analysis show topographical changes on the ...

Swine infection by Streptococcus suis: a retrospective study

The epidemic aspects of swine infections caused by Streptococcus suis were studied, focusing mainly on the occurrence of several serotypes. A total of 323 samples of S. suis were isolated from clinically ill animals, serotyped according to the co-agglutination procedure, and analyzed. The serotyping revealed that S. suis was present in several Brazilian states. The largest number was isolated from the states of...

Adverse drug reactions in adults attending different consultations

Ingredientes para alimentos funcionais : uma área de futuro?

Os prebióticos são ingredientes alimentares não digeríveis, geralmente oligossacarídeos, que exercem um efeito benéfico no indivíduo estimulando selectivamente o crescimento e/ou actividade de espécies bacterianas existentes no cólon, melhorando a saúde do hospedeiro. O mercado mundial deste tipo de produtos tem vindo a crescer a taxas bastante elevadas, apesar de os seus preços de venda serem ainda bastante el...

Respiratory movements cause significant misregistration and altered SUVs in tho...

PET-CT with 18F-DG studies are frequently used in the management of patients with lung malignancies. Unfortunately respiratory movements may influence significantly disease evaluation, particularly during longitudinal follow-up. Our aim is to investigate the influence of forced inspiration (I) and expiration (E) on shallow breathing (S) results (anatomic registration and SUV calculation). We included 18 patient...