¿Encargó Braulio de Zaragoza a Eugenio de Toledo que compusiera una Misa de San Millán?: para una interpretación de «Vita Emiliani», 3, 5-10

[EN] What is Braulio asking from Eugenius in this passage: that he requires a Mass to be celebrated (where?) in honour of San Millán, or that Eugenius himself writes the Mass, or, simply, some parts or prayers for it? Firstly, translations and interpretations provided by scholars to date are checked and criticized; then an interpretation of the passage is proposed, being based on textual criticism approaches, on the work context and on the cultural environment in which this work takes place.

Síntesis, caracterización y estudio de compuestos de coordinación con el ligando N,N¿dimetil-N-N-bis(2-hidroxi-3-metoxi-5-metilbencil) etilendiamina (H2L)

257 p.

Hacia los orígenes de la literatura gastronómica: el calendario de Ananio (fr. 5 West)

[ES] El fragmento 5 West de Ananio, un yambógrafo del siglo VI a.C., es probablemente el primer ejemplo de literatura gastronómica en Grecia. En él se mencionan diversos alimentos indicando el mejor momento del año para su consumo, lo que lo convierte en un verdadero calendario gastronómico. Este tema será después particularmente importante en la medicina dietética, reapareciendo también en el personaje del cocinero-médico en la comedia.

A New Method for Feedback on the Quality of Chest Compressions during Cardiopulmonary Resuscitation

Quality of cardiopulmonary resuscitation (CPR) improves through the use of CPR feedback devices. Most feedback devices integrate the acceleration twice to estimate compression depth. However, they use additional sensors or processing techniques to compensate for large displacement drifts caused by integration. This study introduces an accelerometer-based method that avoids integration by using spectral techniques on short duration acceleration intervals. We used a manikin placed on a hard surface, a sternal triaxial accelerometer, and a photoelectric distance sensor (gold standard). Twenty volunteers provided 60 s of continuous compressions to test various rates (80-140 min(-1)), depths (3-5 cm), and accelerometer misalignment conditions. A total of 320 records with 35312 compressions were analysed. The global root-mean-square errors in rate and depth were below 1.5 min(-1) and 2 mm for analysis intervals between 2 and 5 s. For 3 s analysis intervals the 95% levels of agreement between the method and the gold standard were within -1.64-1.67 min(-1) and -1.69-1.72 mm, respectively. Accurate feedback on chest compression rate and depth is feasible applying spectral techniques to the acceleration. The method avoids additional techniques to compensate for the integration displacement drift, improving accuracy, and simplifying current accelerometer-based devices.

Órdenes generales del Cuerpo de Ejército nº 1 del Ejército del Norte, dadas entre los días 14 de julio y 5 de agosto de 1937, firmadas por el Jefe del Estado Mayor

Orden nº 24 (14 de julio). Unidad de instalación: Carpeta Rectorado G-2. 2 hojas. Orden nº 26 (16 de julio). Unidad de instalación: Carpeta Rectorado G-3. 1 hoja. Orden nº 27 (17 de julio). Unidad de instalación: Carpeta Rectorado G-4. 2 hojas. Orden nº 28 (18 de julio). Unidad de instalación: Carpeta Rectorado G-5. 3 hojas. Orden nº 32 (22 de julio). Unidad de instalación: Carpeta Rectorado G-6. 3 hojas + 1 h. de anexo. Orden nº 40 (31 de julio). Unidad de instalación: Carpeta Rectorado G-7. 1 hoja. Orden nº 41 (1 de agosto). Unidad de instalación: Carpeta Rectorado G-8. 1 hoja. Orden nº 44 (4 de agosto). Unidad de instalación: Carpeta Rectorado G-9. 2 hojas. Orden nº 46 (5 de agosto). Unidad de instalación: Carpeta Rectorado G-10. 1 hoja. Mecanografiadas

Feedback on the Rate and Depth of Chest Compressions during Cardiopulmonary Resuscitation Using Only Accelerometers

Background Quality of cardiopulmonary resuscitation (CPR) is key to increase survival from cardiac arrest. Providing chest compressions with adequate rate and depth is difficult even for well-trained rescuers. The use of real-time feedback devices is intended to contribute to enhance chest compression quality. These devices are typically based on the double integration of the acceleration to obtain the chest displacement during compressions. The integration process is inherently unstable and leads to important errors unless boundary conditions are applied for each compression cycle. Commercial solutions use additional reference signals to establish these conditions, requiring additional sensors. Our aim was to study the accuracy of three methods based solely on the acceleration signal to provide feedback on the compression rate and depth. Materials and Methods We simulated a CPR scenario with several volunteers grouped in couples providing chest compressions on a resuscitation manikin. Different target rates (80, 100, 120, and 140 compressions per minute) and a target depth of at least 50 mm were indicated. The manikin was equipped with a displacement sensor. The accelerometer was placed between the rescuer's hands and the manikin's chest. We designed three alternatives to direct integration based on different principles (linear filtering, analysis of velocity, and spectral analysis of acceleration). We evaluated their accuracy by comparing the estimated depth and rate with the values obtained from the reference displacement sensor. Results The median (IQR) percent error was 5.9% (2.8-10.3), 6.3% (2.9-11.3), and 2.5% (1.2-4.4) for depth and 1.7% (0.0-2.3), 0.0% (0.0-2.0), and 0.9% (0.4-1.6) for rate, respectively. Depth accuracy depended on the target rate (p < 0.001) and on the rescuer couple (p < 0.001) within each method. Conclusions Accurate feedback on chest compression depth and rate during CPR is possible using exclusively the chest acceleration signal. The algorithm based on spectral analysis showed the best performance. Despite these encouraging results, further research should be conducted to asses the performance of these algorithms with clinical data.