Encontrados 22 documentos, a visualizar página 1 de 3
Unified programming application interface for applications based on ISDN or TCP...
Ilídio Ramalho; Fernando M. S. Ramos; Joaquim Arnaldo MartinsThis paper proposes a unified programming application interface for applications based on ISDN or TCP/IP networks. ; Neste artigo é apresentada uma proposta de uma interface que permite uniformizar, do ponto de vista do desenvolvimento de aplicações, a utilização dos ambientes de comunicações RDIS ou TCP/IP.
The usefulness of ultrasound in the classification of chronic liver disease
Ribeiro, Ricardo; Marinho, Rui; Velosa, José; Ramalho, Fernando; Sanches, João; Suri, J. S.Chronic Liver Disease is a progressive, most of the time asymptomatic, and potentially fatal disease. In this paper, a semi-automatic procedure to stage this disease is proposed based on ultrasound liver images, clinical and laboratorial data. In the core of the algorithm two classifiers are used: a k nearest neighbor and a Support Vector Machine, with different kernels. The classifiers were trained with the pr...
Chronic liver disease staging classification based on ultrasound, clinical and ...
Ribeiro, Ricardo; Marinho, Rui; Velosa, José; Ramalho, Fernando; Sanches, JoãoIn this work the identification and diagnosis of various stages of chronic liver disease is addressed. The classification results of a support vector machine, a decision tree and a k-nearest neighbor classifier are compared. Ultrasound image intensity and textural features are jointly used with clinical and laboratorial data in the staging process. The classifiers training is performed by using a population of ...
Diffuse liver disease classification from ultrasound surface characterization, ...
Ribeiro, Ricardo; Marinho, Rui; Velosa, José; Ramalho, Fernando; Sanches, JoãoIn this work liver contour is semi-automatically segmented and quantified in order to help the identification and diagnosis of diffuse liver disease. The features extracted from the liver contour are jointly used with clinical and laboratorial data in the staging process. The classification results of a support vector machine, a Bayesian and a k-nearest neighbor classifier are compared. A population of 88 patie...
The effect of anti-hypertensive drugs on the obstructive pancreatitis in rats
Silva,Roberto de Barros; Ramalho,Fernando Silva; Ramalho,Leandra Z. NairaPURPOSE: To investigate the effect of ACE inhibitor, lisinopril and AT1 blocker, losartan, on the obstructive pancreatitis in rat. METHODS: Acute pancreatitis in rats (n=21) was induced for a common hepatic duct were ligated proximal to its entry into the pancreas and the common bile - pancreatic duct were also ligated near its junction with the duodenum, under ether anesthesia, after which the abdomen were clo...
Estimativa de radiação solar via modelagem atmosférica de mesoescala aplicada à...
Menezes Neto,Otacilio Leandro De; Costa,Alexandre Araújo; Ramalho,Fernando PintoA utilização de fontes alternativas de energias, como a solar, a eólica e a biomassa, vem crescendo significativamente nos últimos anos, sendo a energia solar, em particular, uma fonte abundante na região Nordeste do Brasil. O conhecimento preciso da radiação solar incidente é, assim, de grande importância para o planejamento energético brasileiro, servindo de base para o desenvolvimento de futuros projetos de ...
Effect of thalidomide on the healing of colonic anastomosis, in rats
Veneziano,Samuel Gama; Ramalho,Leandra Naira Zambelli; Ramalho,Fernando Silva; Campos,Antônio Dorival; Rocha,José Joaquim Ribeiro da; Feres,OmarPURPOSE: Thalidomide, because of its anti-inflammatory properties, as re-emerged as an option for the treatment of Crohn's disease refractory to standard therapy. We studied the effect of thalidomide on the healing of colonic anastomosis. METHODS: Sixty male rats (Rattus norvegicus), were divided into 3 groups of 20 animals each, respectively receiving 0.5 or 1.0 mg/kg thalidomide by the oral route for 7 days, ...
Effects of preoperative pelvic irradiation on colonic anastomosis healing: an e...
Franca,Alexandre; Ramalho,Fernando Silva; Ramalho,Leandra Naira Zambelli; Rocha,José Joaquim Ribeiro da; Féres,OmarPURPOSE: Colorectal anastomosis is a constant worry-issue among surgeons because of high rates of complications, specially the dehiscence. The preoperative irradiation on cancer surgeries might interfere in the healing process, leading to an unfavorable outcome. METHODS: In the present study, two groups of rats were irradiated previously to a colorectal anastomosis surgery, with intervals of 4 and 8 weeks betwe...
Hepatic microcirculatory failure
Ramalho,Fernando Silva; Fernandez-Monteiro,Izabel; Rosello-Catafau,Joan; Peralta,CarmenLiver ischemia has been considered a frequent problem in medical practice, and can be associated to a number of surgical and clinical situations, such as massive hepatic resections, sepsis, liver trauma, circulatory shock and liver transplantation. After restoring blood flow, the liver is further subjected to an additional injury more severe than that induced by ischemia. On account of the complexity of mechani...
Liver cirrhosis and hepatic stellate cells
Brandão,Daniel Ferracioli; Ramalho,Leandra Naira Zambelli; Ramalho,Fernando Silva; Zucoloto,Sérgio; Martinelli,Ana de Lourdes CandoloThe cirrhosis represents the final stage of several chronic hepatic diseases and it is characterized by the presence of fibrosis and morphologic conversion from the normal hepatic architecture into structurally abnormal nodules. In the evolution of the disease there is loss of the normal vascular relationship and portal hypertension. There are also regenerative hepatocelular alterations that become more promine...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||