The Audit Program of ANECA-CCA for Central America and the ISO 9001:2015 Standard - A Qualitative-Comparative Analysis

This article presents a comparative analysis of the quality management system model of the Audit program for Central America of ANECA-CCA and the requirements of the ISO 9001: 2015 standard for quality management systems. As a result of this article, an alignment is established between the contents of the Audit program for Central America of ANECA-CCA and the corresponding clauses of the ISO 9001: 2015 Standard.—Este artículo presenta un análisis comparativo de modelo del Sistema de gestión de la calidad del programa Audit para Centroamérica de ANECA-CCA y los requisitos de la Norma ISO 9001: 2015 para sistemas de gestión de la calidad. Como resultados de este artículo se establece una alineación entre el contenido de las dimensiones del programa Audit para Centroamérica de ANECA-CCA y las correspondientes cláusulas de la Norma ISO 9001: 2015

Characterization of the dynamic behavior of transition systems between rigid and flexible catenary

—El estudio que se presenta tratará sobre el comportamiento dinámico que existe ante la transición que se produce a la entrada y salida de un túnel cuando en este último se ha instalado catenaria rígida mientras en el exterior se mantienen sistemas de catenaria flexible. La viga de transición utilizada es un elemento que pretende mitigar las diferencias dinámicas en la fuerza del contacto que se produce entre ambos tipos de catenaria. Su geometría está basada en la viga de rígida, teniendo el mismo perfil inicial y reduciendo su sección para disminuir la rigidez. Los mecanismos actuales de catenaria rígida y transición no permiten el paso a velocidades por encima de 100 km/h, produciéndose pérdidas de contacto y arcos eléctricos que aumentan el desgaste de los componentes considerablemente. El presente trabajo se centra en la caracterización del comportamiento dinámico de los sistemas de transición actuales entre tipos de catenaria y propone una configuración alternativa que permita reducir la pérdida de contacto entre componentes para velocidades por encima del límite conocido. Esto permitirá aumentar el rango de velocidades de explotación y la instalación de catenaria rígida en un mayor ámbito, reduciendo las necesidades de galibo y en consecuencia el diámetro de los túneles a crearThe study presented will deal with the dynamic behavior that exists before the transition that occurs at the entrance and exit of a tunnel when a rigid catenary has been installed in the latter while flexible catenary systems are maintained abroad. The transition beam used is an element that aims to mitigate the dynamic differences in the strength of the contact that occurs between both types of catenary. Its geometry is based on the rigid beam, having the same initial profile and reducing its section to reduce stiffness. The current rigid catenary and transition mechanisms do not allow passage at speeds above 100 km / h, resulting in loss of contact and electric arcs that increase the wear of the components considerably. This paper focuses on the characterization of the dynamic behavior of current transition systems between types of catenary and proposes an alternative configuration that allows reducing the loss of contact between components for speeds above the known limit. This will allow increasing the range of operating speeds and the installation of rigid catenary in a larger area, reducing the needs of gauge and consequently the diameter of the tunnels to be created. The study presented will deal with the dynamic behavior that exists before the transition that occurs at the entrance and exit of a tunnel when a rigid catenary has been installed in the latter while flexible catenary systems are maintained abroad. The transition beam used is an element that aims to mitigate the dynamic differences in the strength of the contact that occurs between both types of catenary. Its geometry is based on the rigid beam, having the same initial profile and reducing its section to reduce stiffness. The current rigid catenary and transition mechanisms do not allow passage at speeds above 100 km / h, resulting in loss of contact and electric arcs that increase the wear of the components considerably. This paper focuses on the characterization of the dynamic behavior of current transition systems between types of catenary and proposes an alternative configuration that allows reducing the loss of contact between components for speeds above the known limit. This will allow increasing the range of operating speeds and the installation of rigid catenary in a larger area, reducing the needs of gauge and consequently the diameter of the tunnels to be create

Stress neuropeptide levels in adults with chest pain due to coronary artery disease: potential implications for clinical assessment

: Substance P (SP) and neuropeptide Y (NPY) are neuropeptides involved in nociception. The study of biochemical markers of pain in communicating critically ill coronary patients may provide insight for pain assessment and management in critical care. Purpose of the study was to to explore potential associations between plasma neuropeptide levels and reported pain intensity in coronary critical care adults, in order to test the reliability of SP measurements for objective pain assessment in critical care