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 = '518473' 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 = '518473' 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 = '518473']
®
ERROR:SQLSTATE[HY000]: General error: 20018 Invalid column name 'Institucion'. [20018] (severity 16) [SELECT Institucion FROM PublicObrasAutoresFil WHERE RefPublicacion = 518473 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= 518473]
SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: Asme International Mechanical Engineering Congress And Exposition, Proceedings (imece) Título del capítulo: IMPACT OF THE CHAMBER SHAPE ON A SOFT ACTUATOR MECHANISM TO MIMIC THE ESOPHAGEAL SWALLOWING PROCESS
A physical prototype of a human esophagus has been developed for
reproducing the human swallowing process with the aim of studying
various disorders that impair its function as well as for the
development of new foods and technologies for their treatment. Several
studies related to the peristalsis phenomena have been conducted in
recent years by studying the effect of different parameters defining the
peristaltic wave. Mathematical models have been developed to investigate
the impact of an integral and a non-integral number of waves during the
swallowing of food stuff such as jelly, tomato puree, among others.
Swallowing through the esophagus has not only been studied numerically
but also reported by using a pneumatic soft actuators. In the present
work, the development of a soft actuator mechanism to reproduce the
peristaltic wave as the one reported by F.J. Chen et. al. 2014 is
described. Such a mechanism consists of a rubber structure that contains
an array of chambers actuated by pressurized air to generate the
peristaltic wave. The final chamber shape was determined after an
iterative process, which involves the elastomer properties, different
chamber shapes, finite element analysis and image processing. The
characterization of the developed peristaltic mechanism was made by
correlating a theoretical study of swallowing peristaltic model and the
waveform obtained from the X-ray radiography analysis as the mechanism
is actuated. As result, the soft actuator mechanism can reproduce a
peristaltic waveform with a correlation coefficient near to 0.9 with
respect to the mathematical model reported in literature. In addition,
the manufacturing process based on additive manufacturing technologies
is also presented.
Entidades citadas de la UNAM:
Fuente:
ISBN: 9780791852149 Editorial: American Society of Mechanical Engineers (ASME)