Valuable conclusions on the effect of. loads and heating on concrete explosive spalling are shown in the paper. Keywrds: High-strength concrete, fire, explosive spalling, columns, heating rate, axial loads. INTRODUCTION. Concrete spalling under high temperatures is a major factor of reducing itâs fire resistance.
Abnormal heart rhythms are called arrhythmias. There are two kinds of cardioversion. Your doctor may give you one or more medicines to bring back your regular heartbeat. This is called pharmacologic (chemical) cardioversion. Doctors also restore regular rhythms by sending an electrical shock to the heart. This is called electrical cardioversion.
These sensations are called palpitations. For most people, although palpitations can feel unpleasant, theyâre usually harmless and do not mean anything is wrong with your heart. You might also feel that your heart has missed or 'skipped' a beat or there has been an extra beat. An extra beat is called an ectopic beat.Ectopic beats are very common and are usually harmless and do not need any treatment. If you are concerned about palpitations or ectopic beats, you should speak to your doctor who will be able to do an ECG to assess your heart rate and the rhythm.n extra beat is called an ectopic beat. Ectopic beats are very common and are usually harmless and do not need any treatment. If you are concerned about palpitations or ectopic beats, you should speak to your doctor who will be able to do an ECG to assess your heart rate and the rhythm.