ERROR:SQLSTATE[HY000]: General error: 20018 Invalid column name 'CodigoInstitucion'. [20018] (severity 16) [SELECT PublicObrasAutores.NumeroEmpleado, PublicObrasAutores.ApellidoPaterno, PublicObrasAutores.ApellidoMaterno, PublicObrasAutores.Nombre, PublicObrasAutores.NombreCompleto FROM PublicObrasAutores LEFT JOIN PublicObrasAutoresFil ON PublicObrasAutores.RefPublicacion = PublicObrasAutoresFil.RefPublicacion WHERE PublicObrasAutores.RefPublicacion = '471022' AND PublicObrasAutores.NumeroEmpleado IS NULL AND PublicObrasAutoresFil.CodigoInstitucion IS NOT NULL;]
®
ERROR:SQLSTATE[HY000]: General error: 20018 Invalid column name 'CodigoInstitucion'. [20018] (severity 16) [SELECT PublicObrasAutores.NumeroEmpleado, PublicObrasAutores.ApellidoPaterno, PublicObrasAutores.ApellidoMaterno, PublicObrasAutores.Nombre, PublicObrasAutores.NombreCompleto FROM PublicObrasAutores LEFT JOIN PublicObrasAutoresFil ON PublicObrasAutores.RefPublicacion = PublicObrasAutoresFil.RefPublicacion WHERE PublicObrasAutores.RefPublicacion = '471022' AND PublicObrasAutores.NumeroEmpleado IS NULL AND PublicObrasAutoresFil.CodigoInstitucion IS NULL;]
®
ERROR:SQLSTATE[HY000]: General error: 20018 Invalid column name 'Institucion'. [20018] (severity 16) [SELECT Institucion FROM PublicObrasAutoresFil WHERE RefPublicacion = '471022']
®
ERROR:SQLSTATE[HY000]: General error: 20018 Invalid column name 'Institucion'. [20018] (severity 16) [SELECT Institucion FROM PublicObrasAutoresFil WHERE RefPublicacion = 471022 AND InstitucionPropia = 'S'
UNION
SELECT Adscripciones.Entidad FROM PublicacionesObras
JOIN PublicObrasAutores ON PublicacionesObras.Identificador = PublicObrasAutores.RefPublicacion
JOIN Adscripciones ON PublicObrasAutores.NumeroEmpleado = Adscripciones.NumeroEmpleado
WHERE (PublicacionesObras.FechaPublicacion BETWEEN Adscripciones.FechaDesde AND Adscripciones.FechaHasta OR (PublicacionesObras.FechaPublicacion >= Adscripciones.FechaDesde AND Adscripciones.FechaHasta IS NULL)) AND PublicacionesObras.Identificador= 471022]
SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: Proceedings Of The 2003 International Joint Power Generation Conference Título del capítulo: The diagnosis of turbine component degradation - Case histories
Autores UNAM: ALFONSO GARCIA GUTIERREZ;
Autores externos: Idioma: InglésAño de publicación: 2003Palabras clave:
Air flow; Steam pressure; Compressed air; Computational methods; Computer programming; Enthalpy; Gas turbines; Geothermal energy; Leakage (fluid); Maintenance; Nozzles; Power generation; Seals; Turbomachine blades; Wear of materials; Steam turbines
Resumen:
In this paper several cases of steam and gas turbine components wearing-out are described. The wearing-out of the steam path components were identified during operation of the machine and verified during overhaul. The diagnosis of the wearing out principally of the blades and seals was carried out before the overhauls. The diagnosis results were useful to indicate major problems to the personal of the plants. The estimation of degrees of wearing-out of the steam turbine components was conducted applying a simplified flow equation considering three key pressures. As far as the gas turbine is concerned the output capacity and pressures, temperature and air and gas flow were measured and analyzed. The results obtained during on-line analysis were confirmed by measurements of the dimensions of wearied-out components during the overhaul which were treated as an input data to a program which calculated losses. Also, the results obtained from a special computer program proved the usefulness of the applied methods.
