Memoria de prácticas de los alumnos Eustaquio F. Miranda, Ricardo Botín, Guillermo O'Shea, Manuel Loring y Felipe Heredia

Memoria de prácticas-Viaje a Puertollano-Visita a las minas y fábricas de Asturias-Mina de carbón de Arnao-Fábrica de La Felguera

The influence of sensor placement on in-situ ultrasound wave velocity measurement.

Ultrasound wave velocity was measured in 30 pieces of Spanish Scots pine (Pinus sylvestris L.), 90 x 140 mm in cross-section and 4 m long. Five different sensor placement arrangements were used: end to end (V0), face to opposite face, edge to opposite edge, face to same face and edge to same edge. The pieces were successively shortened to 3, 2 and 1 m, in order to obtain these velocities and their ratios to reference value V0 for different lengths and angles with respect to the piece axis for the crossed measurements. The velocity obtained in crossed measurements is lower than V0. A correction coefficient for crossed velocities is proposed, depending on the angle, to adjust them to the V0 benchmark. The velocities measured on a surface, are also lower than V0, and their ratio with respect to V0 is close to 0.97 for distances equal to or greater than 18 times the depth of the beam.

Por Doña Francisca Viña de Vergara Aluarado y Grimon... en el pleyto con Doña Mariana Theresa de Aluarado, como posseedora del Mayorazgo de la Gorbara y Don Pedro Fernandez del Campo su marido, Marques de Mejorada... [Texto impreso]

H. impresas por ambas caras

Conversacion que paso entre D. Pedro Fernandez, cavallero de Requena, y Roque Trillo su criado ... sobre las fiestas que en este año de 1784 ha hecho ... Valencia con motivo del parto de la Serenisima Princesa de Asturias y efectuacion de la paz [Texto impreso]

Colofón

Convencion Interamericana sobre Restitucion Internacional de Menores de 15 de julio de 1989 / Diego P. Fernandez Arroyo. --

Inclui notas bibliográficas.

Lack of agreement between tonometric and gastric juice partial carbon dioxide tension

Our goal was to compare measurement of tonometered saline and gastric juice partial carbon dioxide tension (PCO2). In this prospective observational study, 112 pairs of measurements were simultaneously obtained under various hemodynamic conditions, in 15 critical care patients. Linear regression analysis showed a significant correlation between the two methods of measuring PCO2 (r 2 = 0.43; P < 0.0001). However, gastric juice PCO2 was systematically higher (mean difference 51 mmHg). The 95% limits of agreement were 315 mmHg and the dispersion increased as the values of PCO2 increased. Tonometric and gastric juice PCO2 cannot be used interchangeably. Gastric juice PCO2 measurement should be interpreted with caution.