43 documents found, page 1 of 5
Avaliação do potencial nematodicida de Bacillus spp. no nemátode das lesões rad...
Monteiro, TeresaO nemátode das lesões radiculares Pratylenchus penetrans é uma das espécies mais problemáticas deste grupo de nemátodes fitoparasitas, e encontra-se distribuída por todo o mundo. O uso de pesticidas é o principal sistema de proteção de culturas agrícolas utilizado para controlar os danos originados por estes parasitas. No entanto, o biocontrolo tem-se mostrado um método alternativo bastante eficaz. A contínua r...
Acute Ischemic Stroke in a 13-Year-Old Girl: An Unusual Etiology
Tiago, Daniel M.; Pereira, Rita Justo; Monteiro, Teresa; Moura, Márcio; Mendonça, CarlaAcute ischemic stroke is rare in children and is associated with heart, hematologic, and vascular conditions. A high index of suspicion is required for proper diagnosis and intervention. We report a case of an acute ischemic stroke in a 13-year-old girl with a past medical history of left subscapular arteriovenous malformation. She started complaining of fever and nasal obstruction four days before admission, f...
Impact of atomic layer deposited TiO2 on the photocatalytic efficiency of TiO2/...
Oliveira, Inês; Silva, Ricardo M.; Rodrigues, Joana; Correia, Maria R.; Monteiro, Teresa; Faria, Joaquim L.; Silva, Rui F.; Silva, Cláudia G.Titanium oxide (TiO2) has been widely investigated as a photocatalytic material, and the fact that its performance depends on its crystalline structure motivates further research on the relationship between preparation methods and material properties. In this work, TiO2 thin films were grown on non- functionalized wave-like patterned vertically aligned carbon nanotubes (w-VA-CNTs) via the atomic layer depositio...
Tuning Green to Red Color in Erbium Niobate Micro- and Nanoparticles
Devesa, Susana; Rodrigues, Joana; Teixeira, Sílvia Soreto; Rooney, Aidan P; Graça, Manuel P F; Cooper, David; Monteiro, Teresa; Costa, Luís CTetragonal Er0.5Nb0.5O2 and monoclinic ErNbO4 micro- and nanoparticles were prepared by the citrate sol-gel method and heat-treated at temperatures between 700 and 1600 °C. ErNbO4 revealed a spherical-shaped crystallite, whose size increased with heat treatment temperatures. To assess their optical properties at room temperature (RT), a thorough spectroscopic study was conducted. RT photoluminescence (PL) spect...
The role of Ga and Bi doping on the local structure of transparent zinc oxide t...
Correia, Filipe Costa; Ribeiro, Joana Margarida Fernandes Silva; Kuzmin, Alexei; Pudza, I.; Kalinko, A.; Welter, Edmund; Mendes, AdelioTransparent undoped ZnO and additionally doped with Ga and Bi thin films were produced by magnetron sputtering. The thin films were comprehensively characterized by X-ray absorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission and scanning transmission electron (TEM, STEM) microscopy and Raman spectroscopy. All undoped and doped films crystallise in a ZnO phase with the hexagon...
Luminescent silver nanoclusters decorated on ZnO tetrapods: a detailed understa...
Rodrigues, Joana; Becker, Charline; Ben Sedrine, Nabiha; Kamp, Marius; Kienle, Lorenz; Adelung, Rainer; Mishra, Yogendra Kumar; Parak, Wolfgang J.Optical spectroscopic measurements are conducted on luminescent silver nanocluster (AgNC) decorated ZnO tetrapods (ZnO Tp), AgNC@ZnO Tp, synthesized via a colloidal route. Their properties are compared with those of the corresponding AgNC and ZnO Tp to understand their impact on the photoluminescence (PL). Raman spectroscopy reveals the high structural integrity of the ZnO structure in the AgNC@ZnO Tp. PL analy...
Dual transduction of H2O2 detection using ZnO/laser-induced graphene composites
Zanoni, Julia; Moura, Jorge P.; Santos, Nuno F.; Carvalho, Alexandre F.; Fernandes, António J. S.; Monteiro, Teresa; Costa, Florinda M.Zinc oxide (ZnO)/laser-induced graphene (LIG) composites were prepared by mixing ZnO, grown by laser-assisted flow deposition, with LIG produced by laser irradiation of a polyimide, both in ambient conditions. Different ZnO:LIG ratios were used to infer the effect of this combination on the overall composite behavior. The optical properties, assessed by photoluminescence (PL), showed an intensity increase of th...
THORACIC SYMPATHECTOMY: SEDATION EXPERIENCE
Ribeiro, Maria; Coelho, Marta; Monteiro, Teresa; Caldeira, JoãoIntroduction/Study Goals: Thoracic sympathectomy is considered to be the most effective treatment for hyperhidrosis, a procedure traditionally performed under general anesthesia. Nowadays it’s a minimally invasive procedure, which makes it possible to perform under sedation with local anesthesia. The goal in this study was to assess the efficacy and safety of this anesthetic technique in video-assisted thoracic...
GIANT PLEURAL TUMOR AND SEVERE HYPOGLYCEMIA: DOEGE-POTTER SYNDROME IN A PREVIOU...
Junqueira, Nádia; Caldeira, João; Ferreira, Ricardo; Costa, Filipe; Silva, Joana; Monteiro, Teresa; Nobre, ÂngeloIntroduction: Doege–Potter’s syndrome is a rare paraneoplastic syndrome, consisting in hypoglycemia and solitary fibrous tumor of the pleura. These tumors represent <5% of all pleural tumours and can only be cured by surgery. In this article, we report a case of a patient presenting with severe hypoglycemia, as the only symptom, and a mass occupying the entire left hemithorax. Case presentation: A54 year old...
Iridium(III)porphyrin arrays with tuneable photophysical properties
Castro, Maria Cidália Rodrigues; Ben Sedrine, Nabiha; Monteiro, Teresa; Machado, A. V.The photophysical properties of iridium(III) porphyrins complexes with two different axial ligands (Cl(CO) and bipyridine (bpy)) in solution and in cellulose acetate polymer matrix were investigated. The axial ligands substitution was made aiming to evaluate the photophysical properties and the solubility in different solvents. Therefore, dissimilar from the free porphyrin, non-polar solvents (as toluene) favou...