A5072286880- Minerals Flotation and Separation Techniques
- Concrete and Cement Materials Research
- Metal Extraction and Bioleaching
- Iron oxide chemistry and applications
- Innovative concrete reinforcement materials
- Bauxite Residue and Utilization
- Extraction and Separation Processes
- Geochemistry and Geologic Mapping
- Clay minerals and soil interactions
- Advanced Photocatalysis Techniques
- Central Venous Catheters and Hemodialysis
- Radioactive element chemistry and processing
- Grouting, Rheology, and Soil Mechanics
- Mineral Processing and Grinding
- Magnesium Oxide Properties and Applications
- TiO2 Photocatalysis and Solar Cells
- Advanced oxidation water treatment
- Dialysis and Renal Disease Management
- Tailings Management and Properties
- Business and Management Studies
- Academic Research in Diverse Fields
- Natural Fiber Reinforced Composites
- Catalysis and Hydrodesulfurization Studies
- Biofuel production and bioconversion
- Medical and Biological Ozone Research
University of Coimbra
2023-2025
Universidade Federal de Minas Gerais
2014-2024
Hospital de São José
2018
Centro Hospitalar Tondela-Viseu
2016
Zorg voor innoveren
2015
Mining tailings are becoming more and abundant consequently it has been shown to be a material of great concern, especially after the dam failures in Brazil, Bento Rodrigues, 2015 Brumadinho, 2019. In this work, iron ore (IOT) were used as an aggregate production geopolymers based on metakaolin precursor activated alkaline solution. The solution was produced from commercial sodium silicate Na2SiO3 (SS) 10 M hydroxide NaOH (SH) prepared solid flakes (3:1 mass ratio SS:SH). Two syntheses...
The mining industry is closely related to economic development in many countries but also responsible for generating large amounts of waste materials. If not properly processed and/or stored, these residues can present environmental and social risks. Geopolymers are known their ability be used applications where ordinary Portland cement (OPC) commonly used. They some advantages over OPC, such as the use several forms precursor material, better heat fire resistance higher strength. In this...
To date, great strides have been made in elucidating the role of thermochemical pretreatments chemical and structural features plant cell walls; however, there is no clear picture recalcitrance its relationship to deconstruction. Previous studies precluded full answers due challenge multiscale wall organization. Complementing previous efforts, we undertook a systematic, multiscale, integrated approach track effect microwave-assisted H2SO4 NaOH treatments on hierarchical structure plants,...
Background Vascular access (VA) dysfunction in hemodialysis (HD) significantly impacts patient outcomes. While percutaneous transluminal angioplasty remains the primary intervention, covered stents (CSs) have emerged as a valuable adjunct. This study evaluates efficacy of CS reducing reinterventions and delaying subsequent procedures. Methods retrospective included patients who underwent their first placement at SANFIL Access Centre between 2017 2022, involving arteriovenous fistulas (AVFs)...
Nearly a century has passed since Cecil A. Alport first described the triad of nephritis, hearing loss, and ocular abnormalities that would later be recognized as second most common inherited nephropathy significant cause end-stage kidney disease. Pathogenic variants in COL4A3, COL4A4, COL4A5 genes lead to compromised synthesis, assembly, and/or function α3, α4, α5 chains type IV collagen (COL4). This disruption leads an abnormal trimerization COL4 into stable...
This paper presents a potential condition to separate kaolinite through flotation when it is present in bauxite ore. research anticipates Brazilian industry requirement, considering the tendency towards need for aluminosilicates removal from ores, as has already occurred China. Kaolinite most abundant aluminosilicate, and gibbsite main aluminum bearing mineral ores. The first step was fundamental study involving microflotation experiments with pure samples of gibbsite. Ammonium quaternary...
Purpose: To evaluate the production of concrete from partial replacement Portland cement with petroleum catalyst residue (RC), generated in large quantities by petrochemical industries, and addition polyethylene glycol 400 (PEG 400), an emphasis on investigating its mechanical properties durability, considering technological, scientific environmental aspects. Theoretical framework: Oil waste is significant classified as non-inert due to metal ion content, so there a need investigate new...
The cannulation of the arteriovenous fistula (AVF) for hemodialysis (HD) has traditionally depended on nurse's tactile sensation, which been associated with suboptimal needle placement and detrimental effects vascular access (VA) longevity. While introduction ultrasound (US) proven beneficial in mapping AVF outflow vein assisting planning, aneurysmal deformations remain a common occurrence resulting from various factors, including inadequate techniques. Within this context, utilization skin...
INTRODUCTION Fibromyalgia (FM) is a chronic and painful syndrome, which manifests itself in the musculoskeletal system has serious repercussions on cognitive, emotional, physical social levels with negative impact Quality of Life People. OBJECTIVE To analyze FM quality life people to verify extent socio demographic clinical influence life. METHODS This quantitative, non-experimental, transversal, logic descriptive correlational analysis. The sample consisted 70 patients diagnosed FM,...
Introduction: Rituximab is recommended as the first-line therapy for PLA2R-associated membranous nephropathy in patients at moderate to high risk of progressive loss kidney function, due its superior long-term efficacy and improved safety profile. This study aims assess use rituximab treating a tertiary hospital centre. Methods: A retrospective was conducted on diagnosed with who underwent their first administration between 2017 2022 Coimbra Hospital University Centre. The assessed...