56 documents found, page 1 of 6
Avaliação do potencial dos maciços gabróicos do Alentejo para a carbonatação mi...
Pedro, Jorge; Carneiro, Júlio; Moita, Patricia; Berrezueta, Edgar; Araújo, Alexandre; Marques, Fábio; Pinho, Catarina; Caeiro, HelenaThe InCarbon project assessed the potential of gabbroic rocks for CO2 storage in alentejo. Lab carbonation experiments were carried out on gabbroic rocks from the Sines and Odivelas massifs. After gabbroic samples exposure to supercritical CO2-rich brine inside an autoclave, for 90 days, the XRD analysis reveals the presence of dolomite on sample surface, whereas the chemical mapping, by SEMEDS, suggest a spati...
Comunicar sobre Armazenamento Geológico de CO2: O projeto InCarbon na comunidad...
Pinho, Catarina; Carneiro, Júlio; Moita, Patricia; Pedro, JorgeO projeto InCarbon promoveu uma ação de divulgação sobre tecnologias de mitigação de alterações climáticas, na Captura e Armazenamento Geológico de CO2 (CCS – CO2 Capture and Storage), “Devolver o Carbono à sua Origem” para alunos do ensino secundário. Composta por 3 etapas: 1: inquérito diagnóstico sobre alterações climáticas e CCS; 2: palestra sobre o tema e o contributo do InCarbon; 3: inquérito de avaliação...
10 years of hyponatremia: focus on medical communication in liaison psychiatry....
Pinho, Catarina; Maldonado, Emanuela; Correia, Joana; Guimarães, Manuel; Novo, André; Gomes, Joana Raposo; Cardoso, ConceiçãoEffective communication is one of the pillars of the doctor-patient relationship. Hyponatremia is defined as a decrease in serum sodium levels below 135 mEq/L. Objective To draw attention to the possible results of ineffective medical communication and the importance of active listening to the patient. Material and methods Descriptive study of the Case Report type, based on the Case REport guidelines. Case desc...
Combinação de métodos geofísicos, geoquímicos e geoespaciais para estudo de loc...
Oliveira, Rui Jorge; Pinho, Catarina; Caldeira, Bento; Fonseca, Rita; Valente, Teresa; Vieira, João; Silva, Natália; Borges, José FernandoUma colaboração entre o Laboratório de Geofísica e Sismologia e o Laboratório AmbiTerra da Universidade de Évora estudou, entre 2013 e 2014, uma área nas imediações de uma unidade de tratamento de zinco, no Brasil, cujos níveis de poluição em Arsénio e metais potencialmente tóxicos são muito elevados. Esse estudo consistiu na análise geoquímica de solos em diversos pontos da área de estudo. Foram também realiza...
Evaluation of the Environmental Risk of Contaminated Materials: Advice on the M...
Pinho, Catarina; Fonseca, Rita; Carneiro, Júlio; Araújo, AntónioThis work addresses the contamination of the sediments of an alluvial plain and riverbed of a tributary of the San Francisco River, in the Brazilian state of Minas Gerais, by potentially toxic elements from an industrial unit of metallic alloys production. This area was subdivided into four areas (A1, A2, A3, and A0 (background area)) where sediment samples have been collected fol-lowed by geochemical character...
Environmental factors and metals mobilisation in alluvial sediments - Minas Ger...
Fonseca, Rita; Pinho, Catarina; Albuquerque, Teresa; Araújo, JoanaIn areas contaminated by potentially toxic elements (PTEs), knowledge of processes of metal mobilisation is the basis for the choice of appropriate remediation methodologies. The mobilisation of metals is a function of several factors and the response to these factors must be well known during the planning of remediation strategies. The activity of an ore metallurgical plant in SE Brazil resulted in major conta...
Importance of the Spatial Distribution of Rare Earth Elements in the Bottom Sed...
Fonseca, Rita; Araújo, Joana; Pinho, CatarinaThe geochemical composition of rare earth elements (REE) in the bottom sediments of two Do-minican reservoirs and in soils from their catchments was studied to identify possible sources of the deposited materials. Knowledge of the origin of the sediments will serve to control the ex-cessive rates of erosion and sedimentation that occur annually due to periodic extreme climatic events that promote excessive silt...
Evaluating the Effectiveness of Nanotechnology in Environmental Remediation of ...
Fonseca, Rita; Araújo, Joana; Pinho, Catarina; Albuquerque, TeresaA column experiment at a laboratory level was carried out to assess the effect of the application of nanotechnology in the decontamination of soils and alluvial deposits with high levels of poten-tially toxic elements (PTEs). A suspension of zero-valent iron nanoparticles (nZVI) was injected at three different concentrations in selected samples (two sediments, one soil). For most of the el-ements, the retention...
Acid Mine Drainage Precipitates at the Nanometric Scale – Properties and Enviro...
Valente, Teresa; Barroso, Ana; Antunes, Isabel Margarida; Gomes, Patricia; Fonseca, Rita; Pinho, Catarina; Pamplona, Jorge; Sequeira Braga, AmáliaThe mineral-water interactions responsible for mobilization of dissolved toxic elements in mine drainage often generate colloids that commonly occur at the nanometric scale. This study presents typical properties of these materials, mostly composed by iron-rich products. The samples were obtained in a variety of contexts, representing mine waters as well as natural acid rock drainage. It concludes by noting the...
Assessment of the Environmental Risk of a Floodplain Contaminated by Metals Bas...
Pinho, Catarina; Fonseca, Rita; Carneiro, Júlio; Araújo, AntónioThe geochemical characterization, of an industrial area in Minas Gerais State, Brazil, revealed presence of high levels of potentially toxic metals, higher than the values admitted. The use of three environmental classification indices enabled the comparison of data with the adopted classifications for each index, having identified cadmium, lead and zinc as the main contaminants. The construction of interpolati...