Encontrados 26 documentos, a visualizar página 1 de 3
Infecção por Treponema pallidum: análise serológica e pesquisa de DNA
Ferreira, Lino José ManuelRESUMO: A sÃfilis é uma infecção causada por T. pallidum que pode ser transmitida por via vertical, por contacto sexual ou por sangue, e cujo diagnóstico se baseia na associação entre manifestações clinicas e testes serológicos. Neste estudo utilizaram-se os testes serológicos RPR, TPHA, FTA-Abs, um teste rápido não comercializado (Signal-Spirolipin) que pesquisa anticorpos treponémicos (CDC-T) e ...
Towards the Maturation and Characterization of Smooth Muscle Cells Derived from...
Vazão, Helena; Neves, Ricardo Pires das; Grãos, Mário; Ferreira, LinoIn this study we demonstrate that CD34+ cells derived from human embryonic stem cells (hESCs) have higher smooth muscle cell (SMC) potential than CD34− cells. We report that from all inductive signals tested, retinoic acid (RA) and platelet derived growth factor (PDGFBB) are the most effective agents in guiding the differentiation of CD34+ cells into smooth muscle progenitor cells (SMPCs) characterized by the e...
Improved Survival, Vascular Differentiation and Wound Healing Potential of Stem...
Pedroso, Dora C. S.; Tellechea, Ana; Moura, Liane; Fidalgo-Carvalho, Isabel; Duarte, João; Carvalho, Eugénia; Ferreira, LinoIn this study, we developed a methodology to improve the survival, vascular differentiation and regenerative potential of umbilical cord blood (UCB)-derived hematopoietic stem cells (CD34+ cells), by co-culturing the stem cells in a 3D fibrin gel with CD34+-derived endothelial cells (ECs). ECs differentiated from CD34+ cells appear to have superior angiogenic properties to fully differentiated ECs, such as huma...
Video summary generation and coding using temporal scalability
Ferreira, Lino; Cruz, Luís; Assunção, Pedro AmadoIn this paper two algorithms for video summary generation and coding are proposed. Two distortion metrics used in the video summary generation algorithm are compared and an algorithm with reduced computational complexity is presented. The paper also proposes two frame structures in the temporal domain suitable for coding using temporal scalability of the H.264/SVC.
Human Embryoid Bodies Containing Nano- and Microparticulate Delivery Vehicles
Ferreira, Lino; Squier, Trevor; Park, Hyoungshin; Choe, Hannah; Kohane, Daniel S.; Langer, RobertNo Abstract. ; http://dx.doi.org/10.1002/adma.200702404
H.264/SVC ROI encoding with spatial scalability
Ferreira, Lino; Cruz, Luís; Assunção, Pedro AmadoComunicação apresentada na International Conference on Signal Processing and Multimedia Applications, Porto, 2008. ; This paper proposes two H.264/AVC compliant methods for encoding Regions-of-Interest (ROI) with spatial scalability and evaluates their respective rate-distortion-complexity performance. The base layer is kept unchanged and provides lower resolution images with roughly constant quality, without ...
Synthesis and Characterization of Photocurable Elastomers from Poly(glycerol-co...
Nijst, Christiaan L. E.; Bruggeman, Joost P.; Karp, Jeffrey M.; Ferreira, Lino; Zumbuehl, Andreas; Bettinger, Christopher J.; Langer, RobertElastomeric networks are increasingly being investigated for a variety of biomedical applications including drug delivery and tissue engineering. However, in some cases, their preparation requires the use of harsh processing conditions (e.g., high temperature), which limits their biomedical application. Herein, we demonstrate the ability to form elastomeric networks from poly(glycerol-co-sebacate) acrylate (PGS...
Dessecação pré-colheita de soja e Brachiaria brizantha consorciadas com doses r...
Silva,Andréia Cristina da; Freitas,Francisco Cláudio; Ferreira,Lino Roberto; Freitas,Rogério SoaresO objetivo deste trabalho foi avaliar os efeitos da dessecação pré-colheita de soja consorciada com Brachiaria brizantha cv. Marandu, com doses reduzidas de graminicida, na viabilização de colheita mecânica de soja e na capacidade de rebrota e formação de palha de B. brizantha. Foi utilizado esquema fatorial 5x3, com cinco doses do graminicida fluazifop-p-butil - 0, 15, 30, 45 e 60 g ha-1 - e três manejos de de...
Imazapyr root exudation from eucalypt seedlings cultivated in nutritive solution
Silva,Carlos Magno Magalhães da; Ferreira,Lino Roberto; Ferreira,Francisco Affonso; Miranda,Glauco VieiraImazapyr has been used in Brazilian eucalypt cultivation for the maintenance of clearings and coppicing control in areas undergoing stand reform. However, inquiries have been made as to the final fate of the molecule. Imazapyr root exudation in eucalypt plants was evaluated through a bioassay under greenhouse conditions, by applying different herbicide doses (0.000, 0.375, 0.750, 1.125, and 1.500 kg ha-1 a.i.) ...
Épocas de emergência de Brachiaria brizantha no desenvolvimento da cultura da soja
Silva,Andréia Cristina; Ferreira,Lino Roberto; Silva,Antônio Alberto da; Freitas,Rogério Soares; Mauro,AllanA integração agricultura-pecuária beneficia simultaneamente a produção de grãos e a pecuária. Todavia, a forrageira tem sido a principal espécie daninha que compete com a cultura anual. Objetivou-se, neste trabalho, quantificar os efeitos de épocas de emergência de Brachiaria brizantha em relação à cultura da soja. O experimento foi realizado em casa de vegetação, avaliando-se sete épocas de emergência de B. br...
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