Encontrados 7 documentos, a visualizar página 1 de 1

Sentinel node biopsy in breast cancer: results in a large series

Sentinel lymph node biopsy (SLNB) is an appropriate method for the evaluation of axillary status in cases of early breast cancer. We report our experience in treating cases evaluated using SLNB. We analyzed a total of 1192 cases assessed by means of SLNB from July 1999 to December 2007. SLNB processing was successfully completed in 1154 cases with the use of blue dye or radiolabeled 99mTc-Dextran-500, or both. ...

Carcinoma pancreático de células gigantes de tipo osteoclástico

Initially described 40 years ago (Rosai), the undifferentiated osteoclastic-type giant cell carcinoma (IOGCC) is a variant of ductal adenocarcinoma and accounts for less than 1% of exocrine pancreatic tumors. Its extreme rarity, with consequent existence of few reports and clinical experience, leads to the arousal of doubts with regard to its histogenesis, types of approach and therapeutical attitudes. It is im...

PREVALÊNCIA DA SÍNDROME METABÓLICA EM DOENTES ≤45 ANOS COM SÍNDROME CORONÁRIO A...

Percoll gradient versus swim-up: effect of sperm preparation method on sex rati...

Study of electrochromic devices incorporating a polymer gel electrolyte component

In this paper the authors describe the preparation of components and the assembly and testing of a prototype electrochromic window. Solid polymer electrolytes based on poly(trimethylene carbonate), doped with a range of concentrations of lithium perchlorate, were used as multi-functional components in the devices. The device performance was encouraging with appropriate memory effect and optical transparency for...

Simulation of Air Pollution from Mobile Source Emissions in the City of Rio de ...

A simple trajectory model and the chemical mechanism, including the chemistry of ethanol and methyl-tert-butyl ether (MTBE), were used to simulate ozone concentrations at Avenida Brasil, a busy expressway in the city of Rio de Janeiro where emissions from mobile sources are considered to be the major source of air pollution. The calculated ozone maximum of 22.4 ppb at 14:57 h is in good agreement with experimen...

Simulação da Química da Atmosfera Poluída por Automóveis Movidos a Álcool

Numerical modeling studies of urban atmospheres were performed with a photochemical box submodel which incorporates primary emission rates, temperature and solar irradiance rate coefficients. Actinic flux calculations were made for an appropriate latitude for Rio de Janeiro and initial concentrations and emission rates were taken from experimental data. The relative importance of individual reactions is discuss...