ABSTRACT
No disponible
Subject(s)
Humans , Coloboma/diagnostic imaging , Retinal Neoplasms/diagnostic imaging , Fluorescein Angiography/methods , Tomography, Optical Coherence/methods , Fluorescence , Retina/diagnostic imaging , Choroid/diagnostic imaging , Retinal Detachment/etiologyABSTRACT
In this paper a procedure for selecting the enhancing solutions in electrokinetic remediation experiments is proposed. For this purpose, dredged marine sediment was contaminated with fuel, and a total of 22 different experimental conditions were tested, analysing the influence of different enhancing solutions by using three commercial non-ionic surfactants, one bio-surfactant, one chelating agent, and one weak acid. Characterisation, microelectrophoretic and electrokinetic remediation trials were carried out. The results are explained on the basis of the interactions between the fuel, the enhancing electrolytes and the matrix. For one specific system, the electrophoretic zeta potential, (ζ), of the contaminated matrix in the solution was found to be related to the electroosmotic averaged ζ in the experiment and not to the efficiency in the extraction. This later was correlated to a parameter accounting for both contributions, the contaminant and the enhancing solution, calculated on the basis of differences in the electrophoretic ζ in different conditions which has allowed to propose a methodology for selection of enhancing solutions.
Subject(s)
Chelating Agents/chemistry , Electrochemical Techniques/methods , Geologic Sediments/chemistry , Petroleum/analysis , Surface-Active Agents/chemistry , Water Pollutants, Chemical/chemistry , Environmental Restoration and RemediationABSTRACT
The oxidative polymorphism of debrisoquine has been determined in 125 patients with bladder cancer and in 556 healthy control subjects; 96.6% of patients and 93.9% of controls with a metabolic ratio of debrisoquine less than 12.6 were classified as extensive metabolizers of debrisoquine (P = NS). The distribution of frequencies of metabolic ratio values tended to have lower values in the patients (P less than 0.05), reflecting a higher oxidative rate of debrisoquine in urothelioma patients that cannot be explained solely in terms of enzymatic induction by drugs, tobacco or alcohol. Patients with a high occupational risk for urothelioma had lower metabolic ratio values (P = 0.03). Our results suggest that oxidative polymorphism of debrisoquine might be related to the pathogenesis of bladder cancer.
Subject(s)
Carcinoma, Transitional Cell/metabolism , Debrisoquin/metabolism , Isoquinolines/metabolism , Urinary Bladder Neoplasms/metabolism , Aged , Alcohol Drinking , Carcinoma, Transitional Cell/genetics , Female , Humans , Male , Oxidation-Reduction , Polymorphism, Genetic , Risk Factors , Smoking , Urinary Bladder Neoplasms/geneticsABSTRACT
Se describe un metodo que permite eliminar la infeccion osea de manera confiable al favorecer la revascularizacion de los tejidos blandos y del hueso. La escarificacion sigue siempre a un primer tiempo de desbudacion quirurgica, en el cual se hace reseccion generosa de tejidos blandos y economica del huesto, sin llegar nunca a la diafisectomia, para facilitar la consolidacion en casos de fracturas. La escarificacion es un estimulo simple que, repetido sistematicamente, logra la granulacion, lo que a su vez estimula las defensas inmunitarias locales y facilita la eliminacion de la infeccion en mas de 98 por ciento de los casos tratados
