Weathering steel bridge structure after 30 years of service ‐ assessment experience

Percutaneous mitral valvoplasty: 30 years of experience.

Mitral Valve; Balloon Dilatation / history. In 1982, Kanjii Inoue, a Japanese cardiac surgeon, developed the concept that a thickened and deteriorated mitral valve could be widened as a synthetic balloon. This concept was similar to the one used in the surgical closed mitral commissurotomy1. Subsequently, the double-balloon technique was introduced in Saudi Arabia as an alternative method to th...

Allosteric Receptors after 30 Years

Repeat mitral valve replacement: 30-years' experience.

Prosthetic heart valve dysfunction is an acquired condition that carries a significant risk of emergency surgery. However, the long-term natural history of the condition is not well understood. Between 1974 and 2006, 1535 isolated mitral valve replacements were performed at our hospital (in-hospital mortality 5%). In total, 369 patients needed a second operation (in-hospital mortality 8.1%), wh...

Acoustic Emission Monitoring for Assessment of Steel Bridge Details

Acoustic emission (AE) testing was deployed on details of two large steel Interstate Highway bridges: one cantilever through-truss and one trapezoidal box girder bridge. Quantitative measurements of activity levels at known and suspected crack locations were made by monitoring AE under normal service loads (e.g., live traffic and wind). AE indications were used to direct application of radiogra...

Reflections after 30 Years of Psychiatric Nursing

Down through the ages people have become more and more aware of the facts of mental illness. We find this has often been alerted by some reform in legislature, from Connolly at Hanwell and earlier, through subsequent reforms of the 19th century, the Mental Deficiency Act of 1913, the Temporary Patient status and Voluntary Admission in 1930, to our new legislation of today. These changes have na...