18 documents found, page 1 of 2
When vitamin supplementation would make all the difference
Carvalho, Clara; Carmo, Filipa; Martins, Rosa; Matos, Eugénia; Torres, Erica; Rebelo, MónicaIntroduction: Dietary intake is insufficient to provide adequate levels of vitamin D during the first year of life and supplementation is required. The main function of calcitriol is to regulate calcium-phosphorus metabolism. Its deficiency can lead to hypocalcemia with severe clinical manifestations. Case Report: A six-month-old melanodermic female infant, exclusively breastfed until five months of age without...
When vitamin supplementation would make all the difference
Picão de Carvalho, Clara; Carmo, Filipa; Martins, Rosa; Matos, Eugénia; Torres, Erica; Rebelo, MónicaIntroduction: Dietary intake is insufficient to provide adequate levels of vitamin D during the first year of life and supplementation is required. The main function of calcitriol is to regulate calcium-phosphorus metabolism. Its deficiency can lead to hypocalcemia with severe clinical manifestations. Case Report: A six-month-old melanodermic female infant, exclusively breastfed until five months of age without...
ECMO in Neonates with Congenital Diaphragmatic Hernia: The Experience of a Port...
Miranda, Mariana; Abecasis, Francisco; Almeida, Sofia; Torres, Erica; Boto, Leonor; Camilo, Cristina; Neves, José Pedro; Abecasis, MiguelIntroduction: The use of extracorporeal membrane oxygenation (ECMO) is considered by many authors as one of the most important technological advances in the care of newborns with congenital diaphragmatic hernia. The main objective of this study was to report the experience of a Portuguese ECMO center in the treatment of congenital diaphragmatic hernia.Material and Methods: Descriptive retrospective study of new...
Novel phenoxazine-benzonitrile and phenothiazine-benzonitrile donor-acceptor mo...
Baraket, Faiza; Pedras, Bruno; Torres, Erica; Dammak, Mohamed; Berberan-Santos, Mário N.; Brites, Maria JoãoABSTRACT: Four novel TADF emitters, containing phenothiazine and phenoxazine as electron-donors and benzonitrile derivatives as electron-acceptors were synthesized and fully characterized. Their photophysical (absorption and emission spectra, molar extinction coefficients, fluorescence quantum yields and lifetimes) and electrochemical properties (HOMO and LUMO energy levels) were measured, and drop-cast solid f...
Infantile Hemangioma and Updated Recommended Treatment
Silva, Maria João; Palácios, Jorge; Rebelo, Mónica; Torres, EricaInfantile hemangioma is a benign vascular tumor that frequently occurs at pediatric age, normally at a rate of 2% to 12% in Caucasian newborn babies, particularly in females. The International Society for The Study of Vascular Anomalies has divided these anomalies into two categories: vascular tumors and vascular malformations, including infantile hemangioma among benign vascular tumors. Clinical evolution is c...
Multifocal infantile haemangioma: a diagnostic challenge
Torres, Erica; Rosa, João; Leaute-Labreze, Christine; Soares-de-Almeida, LuisWe describe a case of a newborn who presented with multiple dark red macules that developed into red-to-purple papules associated with thrombocytopaenia. Abdominal ultrasound showed multiple hyperechoic papules and nodules. Endothelial cells from a skin biopsy stained positively for endothelial cell glucose transporter 1, which was consistent with a diagnosis of multifocal infantile haemangioma. At the age of 2...
Ectima Gangrenoso: Um Alerta Para Imunodeficiência
Torres, Erica; Marques, Bárbara; Gil, Joana; Virtuoso, Maria João; Sousa, Ana Berta; Esteves, Isabel; Marques, José GonçaloAs infeções graves, atípicas, recorrentes ou por agentes oportunistas devem ser sempre um sinal de alerta para imunodeficiência primária. Apresenta-se o caso clínico de uma lactente de 8 meses, previamente saudável, internada por sépsis e lesão na região lombosagrada com necrose central e bordos inflamatórios, sugestiva de ectima gangrenoso. Analiticamente apresentava anemia, neutropenia e proteína C reativa el...
Assessment of dye distribution in sensitized solar cells by microprobe techniques
Barreiros, M. Alexandra; Corregidor, V.; Alves, L. C.; Guimarães, Fernanda; Mascarenhas, João; Torres, Erica; Brites, Maria JoãoDye sensitized solar cells (DSCs) have received considerable attention once this technology offers economic and environmental advantages over conventional photovoltaic (PV) devices. The PV performance of a DSC relies on the characteristics of its photoanode, which typically consists of a nanocrystalline porous TiO2 film, enabled with a large adsorptive surface area. Dye molecules that capture photons from light...
Synthesis, photophysical and electrochemical properties of perylene dyes
Torres, Erica; Berberan-Santos, Mário N.; Brites, Maria JoãoABSTRACT: Perylene dyes comprising: (i) 4-alkoxyphenylamino moiety in the 9-position as a strong donating group, (ii) cyanoacrylic acid as electron acceptor and anchoring group and (iii) a triple bond as short and rigid linker between perylene core and the acceptor group have been successfully synthesized. Their photophysical (i.e. absorption and emission spectra, molar extinction coefficients, fluorescence qua...
Coumarin dye with ethynyl group as p-spacer unit for dye sensitized solar cells
Torres, Erica; Sequeira, S.; Parreira, P.; Mendes, Paulo; Silva, Tiago J. L.; Lobato, Killian; Brites, Maria JoãoC1-LEN coumarin dye, containing an ethynyl conjugated bridge was tested as a new chromophore for dye-sensitized solar cells (DSSCs). Investigation on the relationship of dye structure, optical properties, electrochemical properties and performance of DSSCs is described. The C1-LEN-sensitized solar cells showed an overall conversion efficiency of 2.2% (JSC = 6.11 mA/cm2, VOC = 547 mV, FF = 0.66), which correspon...