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In this paper we describe the MBase system, a web-based, distributed mathematical knowledge base. This system is a mathematical service in MathWeb that ooers a universal repository of formalized mathematics where the formal representation allows semantics-based retrieval of distributed mathematical facts.
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OBJECTIVES We sought to validate high-resolution transthoracic real-time (RT) three-dimensional echocardiography (3DE), in combination with a novel semi-automatic contour detection algorithm, for the assessment of left ventricular (LV) volumes and function in patients. BACKGROUND Quantitative RT-3DE has been limited by impaired image quality and… (More)
OBJECTIVES We studied the acute effects of cardiac resynchronization therapy (CRT) on functional mitral regurgitation in heart failure (HF) patients with left bundle branch block (LBBB). BACKGROUND Both an decrease [corrected] in left ventricular (LV) closing force and mitral valve tethering have been implicated as mechanisms for functional mitral… (More)
OBJECTIVES We sought to study: 1) the accuracy and reproducibility of real-time 3-dimensional echocardiographic (RT3DE) analysis of left ventricular (LV) volumes in a multicenter setting, 2) interinstitutional differences in relationship with the investigators' specific experience, and 3) potential sources of volume underestimation. BACKGROUND… (More)
BACKGROUND There is a paucity of detailed and controlled studies on the action of ethanol and alcoholic beverages on gastric emptying in humans. This study was designed to compare the effect of beer, red wine, whisky and their comparable pure ethanol solutions on gastric emptying in a controlled and randomized investigation. METHODS On separate days, 10… (More)