High speed imaging and algorithms for non invasive vibrations measurement

Comunicación presentada en EVACES 2011, 4th International Conference on Experimental Vibration Analysis for Civil Engineering Structures, Varenna (Lecco), Italy, October 3-5, 2011.

Sangre fresca publicitaria: True Blood y las transfusiones de la ficción

El artículo analiza el concepto de transmedia storytelling en su dimensión publicitaria. En cierto modo, las narrativas transmediáticas, esto es, la diseminación de las tramas ficcionales a lo largo de soportes y plataformas diversos pero sinérgicos (letra impresa, cine, televisión) fueron empleadas en primer lugar en el mensaje publicitario, obligado a transmigrar por su carencia de un soporte exclusivo y a cambio por la vocación de colonizarlos a todos. Hoy día es el producto cultural ficcional el que devuelve a la publicidad el préstamo: son los universos ficcionales los marcos más propiciatorios para el consumo, no sólo de la cultura industrial en sí, en cualquiera de sus soportes, sino de todo un rosario de marcas arracimadas en torno a la narrativa ficcional. Analizaremos en detalle este fenómeno en una teleserie norteamericana muy reciente, True Blood (HBO, 2008), todavía en emisión, y en todo el universo ficcional que orbita a su alrededor. La diferencia entre los productos culturales en sí y las piezas publicitarias encargadas de promocionarlos –como ya vio premonitoriamente Adorno- se disuelve en un continuo cross-promotional, que tiende a enmascarar también los límites entre las estrategias corporativas y las intervenciones del fan.

Multidecadal variability of the continental precipitation annual amplitude driven by AMO and ENSO

As the water vapor content in the atmosphere scales with temperature, a warmer world is expected to feature an intensification of the hydrological cycle. Work to date has mainly focused on mean precipitation changes, whose connection to climatic modes is elusive at a global scale. Here we show that continental precipitation annual amplitude, which represents the annual range between minimum and maximum (monthly) rainfall, covaries with a linear combination of the Atlantic Multidecadal Oscillation and low-frequency variations in the El Niño–Southern Oscillation on a decadal to multidecadal scale with a correlation coefficient of 0.92 (P<0.01). The teleconnection is a result of changes in moisture transport in key regions. Reported trends in the annual amplitude of global precipitation in recent decades need to be assessed in light of this substantial low-frequency variability, which could mask or enhance an anthropogenic signal in hydrological cycle changes.

Catheter-related bloodstream infection: burden of disease in a tertiary hospital

Background: Surveillance programmes have become the most effective tool for controlling catheter-related bloodstream infections (CRBSI). However, few studies have investigated programmes covering all hospital settings. Aim: To describe the results of a control and prevention programme for CRBSI based on compliance with recommendations for insertion and maintenance, using annual burden of disease in a tertiary level hospital. Methods: A CRBSI control and prevention programme involving all hospital settings was implemented. The programme consisted of CRBSI surveillance, direct observation of insertion and maintenance of catheters to determine performance, and education for healthcare workers. Findings: In total, 2043 short-term catheters were inserted in 1546 patients for 18,570 catheter-days, and 279 long-term catheters were inserted in 243 patients for 40,440 catheter-days. The annual incidence density was 5.98 (first semester 6.40, second semester 5.64) CRBSI per 1000 catheter-days for short-term catheters, and 0.57 (first semester 0.66, second semester 0.43) CRBSI per 1000 catheter-days for long-term catheters. One hundred and forty insertion procedures were observed, with an average insertion time of 13 (standard deviation 7) min. Compliance with recommendations was as follows: hand hygiene, 86.8%; use of alcoholic chlorhexidine solution for skin disinfection, 35.5%; use of mask, 93.4%; use of gloves, 98.7%; use of gown, 75.0%; use of sterile cloth, 93.8%; use of cap, 92.2%; bandage application, 62.7%; and use of aseptic technique, 89.5%. Forty-five maintenance procedures were observed, and compliance rates were as follows: hand hygiene, 42.1%; use of gloves, 78.1%; and port disinfection with alcoholic chlorhexidine solution, 32.5%. Conclusion: The CRBSI control and prevention programme implemented at the study hospital has decreased the rate of CRBSI, provided important information about the total burden of disease, and revealed possible ways to improve interventions in the future.