19th c. Coloured stuccos and plasters from Grilos' Church (Oporto, Portugal): Materials and techniques employed

The Oporto's St. Lourenço Church of the Jesuit College is locally known, since the St. Augustin Barefooted Eremites occupation (1779/80), as Grilos' Church. The Oporto's siege laid by D. Pedro and D. Miguel (1832/33) succeed in the college abandonment by Grilo's Friars. Throughout Augustin Friars presence period, the white plasters of the nave (end of 18th c.) were executed and it was constructed the Holly Sacrament Chapel (early 19th c.) with neoclassic coloured stuccos and plasters, influenced by Robert Adam, Luigi Chiari and Teixeira Barreto ornamental motifs. Pigments were added to the external layer to imitate the marble and to achieve the “base” colour of the panels. This study of the blue, rose and white stuccos and plasters of H.S. Chapel of Grilo's Church allows carrying out useful database on the original mortars composition by the use of different analytical techniques, important to select the most adequate solutions for restoration interventions. Optical microscopy, XRD, TG-DTA, SEM-EDS, XRF analysis results were considered to identify the composition of different layers and to provide mineralogical, microstructure and chemical characterization of the mortars components and to quantify the binder content in those mortars. These results were compared with collected information on compositions from other sources. This study allowed the identification of the decay causes of decorative stuccos and plaster, suggesting that water retention in the masonries and wooden laths structure of the dome of the chapel is the main factor.

Analysis of Pancreas Histological Images for Glucose Intolerance Identification using Wavelet Decomposition

Subtle structural differencescan be observed in the islets of Langer-hans region of microscopic image of pancreas cell of the rats having normal glucose tolerance and the rats having pre-diabetic(glucose intolerant)situa-tions. This paper proposes a way to automatically segment the islets of Langer-hans region fromthe histological image of rat's pancreas cell and on the basis of some morphological feature extracted from the segmented region the images are classified as normal and pre-diabetic.The experiment is done on a set of 134 images of which 56 are of normal type and the rests 78 are of pre-diabetictype. The work has two stages: primarily,segmentationof theregion of interest (roi)i.e. islets of Langerhansfrom the pancreatic cell and secondly, the extrac-tion of the morphological featuresfrom the region of interest for classification. Wavelet analysis and connected component analysis method have been used for automatic segmentationof the images. A few classifiers like OneRule, Naïve Bayes, MLP, J48 Tree, SVM etc.are used for evaluation among which MLP performed the best.

UN “ORDEN MUNDIAL” NO TAN “NUEVO”: BANDERAS DE CONVENIENCIA Y EL OECÚMENE GEOECONÓMICO

El rol de la geocconomía como una poderosa herramienta condicionante al interior de la organización de “lo global”, permanece sin la suficiente investigación en lo relativo a los trabajos sustentados en la tradición geopolítica. Las Banderas de Conveniencia (BDCs, en adelante) son destacadas como un ejemplo de la importancia que posee el enfrentamiento entre la geopolítica y la geoeconomía en la geoeconomía política, y las dificultades asociadas con el manejo de “lo global”. Banderas de Conveniencia es la expresión que define la utilización por parte de una empresa mercantil naviera de la bandera de un país que no es el suyo, con la finalidad de beneficiarse de la regulación menos estricta que rige en dicho país. El mecanismo a través del cual se realiza esta acción está constituido por el registro de la nave en el país que la va a beneficiar con su regulación. El presente artículo se preocupa de la geopolítica, de manera preferente, como de las interrelaciones de las naciones-estados (lo internacional). Por contraste, la geoeconomía sugiere una preocupación acerca de la fluidez de las transferencias y los flujos de capital y productos al interior y entre las empresas y los mercados, a una escala global. Los desarrollos en la geoeconomía durante la Guerra Fría han tenido como resultado la evolución de un oecúmene geoeconóm leo. Dicho oecúmenc se caracteriza por la flexibilidad del intercambio mundial, y la relativa facilidad de los movimientos y flujos transfronterizos. Estableciendo un enfrentamiento entre la geopolítica y la geocconomía, el concepto de una geoeconomía política globalizada se hace más difícil y las operaciones de las BDCS demuestran los problemas vinculados con el manejo y control en este nivel.Abstract:The role ofgeoeconomics in the organization of “the global” has received comparatively little attention comparcd with traditional geopolitics; in contrast to the inter-state focus of gcopolitics, geoeconomics focuses on the global transfers of capital and goods in and between firms and markets. In this paper, “Flags of Convenience” are used as examples of the merging of geopolitics and geocconomics within an evolving glohalised “geopolitical cconomy”; they also reveal the complex issues associated with thc control and management of globalised activities. Geoeconomic changes during the Coid War have given rise to increased intcrconncctcdness at the global level. These connections are characterized by flexibility, transfers, ease of movement and transboundary flows. By linking gcopolitics and geoeconomics within a concept of a globalised geopolitical economy, it may be possible to understand these changes better, also the ways in which their negative and positive impacts can be reduccd or enhanced respectively.