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PHEOCHROMOCYTOMA AND NEUROFIBROMATOSIS 1

Introduction: Pheochromocytomas are tumours arising from chromaffin cells in the sympathetic nervous system. Clinical manifestations are protean, function of the variable secretory profile of several compounds including catecolamines, neuropeptides and other vasoactive molecules. Neurofibromatosis I (von Recklinghausen`s disease), a prevalent autosomal dominant disorder, is the most prevalent type among the neu...

Early precut fistulotomy for biliary access : time to change the paradigm of "t...

Prova tipográfica ; The precut timing during the biliary cannulation algorithm is a subject of controversy. Some studies suggest that early institution of precut is a safe and effective strategy even though the extent to which this approach may affect the duration of the ERCP is seldom addressed. OBJECTIVE: To assess the success, safety, and procedure duration of an early precut fistulotomy (group A) versus a ...

Global Heritage Stone: Estremoz Marbles, Portugal

Abstract: Paleozoic calcitic marbles are found in the Estremoz Anticline, Ossa-Morena Zone (Southern Branch of the European Variscides in Portugal). This 40 km NW – SE structure presents outcrop continuity and intense mining activity since the Roman Period. The structure has a Precambrian core and the younger rocks are from the Devonian Period. The marbles occupy an intermediate stratigraphic position in the Ca...

The dynamics and drivers of fuel and fire in the Portuguese public forest

On the Use of Thermal Properties for Characterizing Dimension Stones

The use of dimension stones in architecture and civil engineering implies the knowledge of several mechanical, physical, and chemical properties. Even though it has been usual practice to measure physical and mechanical properties of dimension stones the same is not true for thermal properties such as thermal conductivity, thermal diffusivity, specific heat capacity, and heat production. These properties are pa...

Global Stone Congress

Since 2005, when the first edition of what is now called GLOBAL STONE CONGRESS took place in Brazil, participants from several countries who work on dimension stone realized this type of meeting should proceed, involving as much as possible, professionals and academics exchanging experience and scientific knowledge in the subject. Italy (2008) and Spain (2010) organized the next ones and then Portugal hosted t...

Petrogenesis of the Santa Eulália Plutonic Complex (Alentejo, Portugal): contri...

The Santa Eulalia Plutonic Complex (SEPC) is a late-Variscan granitic massif with elliptical contours intersecting the NW-SE Variscan dominant regional structures in the most northerly sectors of the Ossa-Morena Zone (Iberian massif). The host rocks of this plutonic complex are meta-sedimentary formations generated between Proterozoic and Lower Paleozoic, some of them strongly affected by contact metamorphic pr...

Santa Eulália Plutonic Complex (Southern Portugal): petrology, geochemistry and...

The Santa Eulália Plutonic Complex (SEPC) is a 400 km2 late variscan granitic pluton in the SW sector of the Iberian Variscides which cross-cuts the regional NW-SE Upper Proterozoic to Lower Palaeozoic lithological units. From the rim to the core, SEPC shows a medium- to coarse-grained pink granite (G0 group) involving large elongated masses of mafic to intermediate rocks (M group) and a central grey monzonitic...

Roman Marble from Lusitania: Petrographic and Geochemical Characterisation

This paper reports the results of an archaeometric study of the marble from the Estremoz Anticline, Portugal. Thirty-four samples from eleven different locations were analysed petrographically. In addition, ten samples were selected for trace element and strontium isotopic analysis. The sampling was aimed at obtaining material from known ancient quarries and at establishing the overall petrographic and geochemi...

On the Use of Thermal Properties for Characterizing Dimension Stones

The use of dimension stones in architecture and civil engineering implies the knowledge of several mechanical, physical, and chemical properties. Even though it has been usual practice to measure physical and mechanical properties of dimension stones the same is not true for thermal properties such as thermal conductivity, thermal diffusivity, specific heat capacity, and heat production. These properties are pa...