surfactant surÂ·facÂ·tant (sÉr-fÄk'tÉnt, sÃ»r'fÄk'-) n. A surface-active substance. A substance composed of lipoprotein that is secreted by the alveolar cells of the lung and serves to maintain the stability of pulmonary tissue by reducing the surface tension of fluids that coat the lung.
The Microsoft Exchange Information Store service uses a database engine called Extensible Storage Engine (ESE), which is a transaction-based database technology. In some troubleshooting instances or when moving from mixed to native mode, you may need to restart the Microsoft Exchange Information Store service. Procedure. To restart the Microsoft Exchange Information Store service. On the Start menu, click Run, type services.msc, and then click OK. In the Results pane, find the Microsoft Exchange Information Store service. Right-click the service, and then click Restart.
1 To do this on a computer that is running Microsoft Windows XP or an earlier version of Windows, press CTRL+ALT+DELETE, and then click Task Manager. 2  Click the Applications tab. 3  In the Task list, click a program, and then click End Task. 4  Repeat step 3 until you have quit each program that is listed in the Task list. To do this on a computer that is running Microsoft Windows XP or an earlier version of Windows, press CTRL+ALT+DELETE, and then click Task Manager. 2  Click the Applications tab. 3  In the Task list, click a program, and then click End Task. 4  Repeat step 3 until you have quit each program that is listed in the Task list.