25 documents found, page 1 of 3

Geochemical Modeling of CO2-Brine Gabbro-diorite Interaction for in-situ Minera...

This work consists of a geochemical modeling applied to in situ mineral carbonation. The simulations are based on previous laboratory tests that followed 4 time sets of a plutonic mafic rock samples immersed into supercritical CO2 – brine (8 MPa and 40°C) up to a maximum of 64-days. The study aims to mimic the experimental results; pH evolution, solution concentration changes and newly formed mineral phases. Th...

Mineralogia das rochas carbonatadas do Setor de Alter do Chão-Elvas; alterações...

A Formação Carbonatada de Elvas, Setor de Alter do Chão-Elvas, caracteriza-se pela presença de uma espessa sucessão de rochas carbonatadas, sendo intruída pelo Complexo Plutónico de Santa Eulália durante o Carbónico. O objetivo do trabalho é caracterizar a variação mineralógica e textural resultante do metassomatismo associado a esta intrusão. Nos domínios sem evidências macroscópicas de metassomatismo, a miner...

Oral glucose tolerance testing at 1 h and 2 h: relationship with glucose and ca...

Background: One hour plasma glucose concentration (1hPG) during an oral glucose tolerance test (OGTT) may be an alternative to 2-h plasma glucose concentration (2hPG) in the identification of individuals at increased risk of hyperglycaemia, although its role is not fully understood. Aim: We aim to investigate the relationship of these measures with other glucose parameters, as well as their relationship with ca...

Mineral Carbonation of CO2 in Mafic Plutonic Rocks, II-Laboratory Experiments o...

The potential for mineral carbonation of CO2 in plutonic mafic rocks is addressed through a set of laboratory experiments on cumulate gabbro and gabbro-diorite specimens from the Sines Massif (Portugal). The experiments were conducted in an autoclave, for a maximum of 64 days, using a CO2 supersaturated brine under pressure and temperature conditions similar to those expected around an injection well during ear...

Até onde irá o Terreno Finisterra? Proposta de correlação com os “Terrenos” Var...

O Maciço Ibérico foi subdividido num conjunto de terrenos tectonoestra tigráficos com características próprias, entre os quais os Terrenos Finisterra (TF) e Ibérico (TI). O TF contacta com TI, nomeadamente com a Zonas Centro Ibérica e Ossa-Morena, através de uma zona de cisalhamento, a Zona de Cisalhamento Porto-Tomar-Ferreira do Alentejo. O TF apresenta características que contrastam com as que especializam o ...

Crustal stretching process denounced by mafic magmatism in the Finisterra Terra...

The occurrence of a new tectono-stratigraphic terrane (Finisterra Terrane), located in the westernmost domains of the Porto-Tomar-Ferreira do Alentejo Shear Zone, has been highlighted in the last few years. Nevertheless, there are several gaps in the geological knowledge of this Terrane, including the interpretation of existing data in the framework of the new tectono-stratigraphic terrane proposal, with an ind...

The impact of vitamin d in non-alcoholic fatty liver disease: A cross-sectional...

Purpose: We aimed to evaluate the association between vitamin D status and hepatic function parameters and scores: Fatty Liver Index (FLI, predictor of hepatic steatosis) and BARD (BMI, AST/ALT ratio and DM, predictor of hepatic fibrosis) in patients with morbid obesity. Patients and Methods: Cross-sectional study including patients with morbid obesity followed in our centre between January 2010 and July 2018. ...

Beta Cell Function as a Baseline Predictor of Weight Loss After Bariatric Surgery

Background: Obesity is a multifactorial disease, which is strongly associated to other metabolic disorders. Bariatric surgery is the most effective treatment of morbid obesity. The role of beta cell function in weight loss after bariatric surgery is uncertain. Aim: To evaluate the association between beta cell function and percentage of total body weight loss (TBWL%) 1, 2, 3, and 4 years after bariatric surgery...

Avascular femoral necrosis as part of Cushing syndrome presentation: a case report

Background: The clinical characteristics and complications of Cushing syndrome (CS) are well known and described in the literature. Nevertheless, rare, atypical presentations may go unnoticed. Osteonecrosis is a well-documented complication of glucocorticoid therapy. However, endogenous hypercortisolism is a rare, but relevant, cause of bone avascular necrosis. We describe the case of a woman with CS undiagnose...

Correction to: Avascular femoral necrosis as part of Cushing syndrome presentat...