The Journal of Research of the National Bureau of Standards features advances in measurement methodology and analyses consistent with the NBS responsibility as the nation's measurement science laboratory. It includes reports on instrumentation for making accurate and precise measurements in fields of physical science and engineering, as well as the mathematical models of phenomena which enable ...

The benefits of thrombolysis in patients with acute myocardial infarction are time dependent, with a potential 48% reduction in mortality if treatment is received within an hour of onset of symptoms. The benefits diminish thereafter. However the “call to needle” standard set by the national service framework has been achieved for only a third of patients nationally because of lengthy ambulance ...

In recent years, there has been a growing interest in steels of multi-phase structures, composed of a ferritic matrix, in which islets occur, that contain bainite-B, martensite-M and the untransformed austenite-A 1-9 . The multi-phase structure of steel with untransformed austenite promotes the increase of plasticity induced by the phase transformation – the TRIP effect 3-4, 6-8 . In steels con...

BACKGROUND To evaluate whether treatment of the inguinal hernia in patients over 70 years has different connotations with respect to patients of a lower age. MATERIAL AND METHODS Prospective study of 299 patients who had undergone intervention for an uncomplicated unilateral inguinal hernia during the year 2002. Group 1 included 90 patients with an age equal to, or higher than 70 years, and g...