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The phrase or term "shut down", "shut-down" or "shutdown" can be used to mean "turning off" something, but most commonly used for machines, especially nuclear reactors and computers. It also has a use in economics, for profit maximization. The verb forms, such as "to shut down", are always separate words, as otherwise would lead to absurd forms as "shutdowning". Note that the phrase "shut up" has quite different meanings. "SD" is a slang term for "shut down".

Nuclear reactors


In a nuclear reactor, shutdown refers to the state of the reactor when it is subcritical by at least a margin defined in the reactor's technical specifications. Further requirements for being shut down may include having the reactor control key be secured and having no fuel movements or control systems maintenance in progress.

The shutdown margin is defined in terms of reactivity, frequently in units of delta-k/k (where k is taken to mean k-effective, the effective multiplication factor) or occasionally in dollars. Shutdown margin refers to the margin by which the reactor is subcritical when all control rods are in OR the margin by which the reactor would be shut down in the event of a scram. Hence, care must be taken to define shutdown margin in the most conservative way in the reactor's technical specifications; a typical research reactor will specify the margin when in the cold condition, without xenon. Under this specification, the shutdown margin can be simply calculated as the sum of the control rod worths minus the core excess.

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Startup and Shutdown Screens :: Desktop Customization

 
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Vista Slow Startup And Shutdown, http://bit.ly/4DE9Hq
AnswerRegistry (John Russell) Thu, 24 Dec 2009 22:25:07 -0000
Vista Slow Startup And Shutdown, http://bit.ly/4DE9Hq
@BigBadJon52 And I've got the midi of the theme song. I think he needs that as his pc startup&shutdown sounds don't you?
amy0223 (Amy) Wed, 23 Dec 2009 14:15:39 -0000
@BigBadJon52 And I've got the midi of the theme song. I think he needs that as his pc startup&shutdown sounds don't you?
Updates : [S60V3] Windows 7 startup and shutdown:     Post: Requi.. http://bit.ly/7AFw7c Powered By Shaka '09
ShakaNextGenWeb (Shaka - NextGenWeb) Wed, 23 Dec 2009 04:53:55 -0000
Updates : [S60V3] Windows 7 startup and shutdown:     Post: Requi.. http://bit.ly/7AFw7c Powered By Shaka '09
RT @ITSupport_24hrs: Perform #System updates and improve #PC Speed and performance, including startup and shutdown #Optimization-http:// ...
techsupport (techsupport) Tue, 22 Dec 2009 18:04:40 -0000
RT @ITSupport_24hrs: Perform #System updates and improve #PC Speed and performance, including startup and shutdown #Optimization-http:// ...
RT @ITSupport_24hrs: Perform #System updates and improve #PC speed and performance, including startup and shutdown optimization-http://b ...
techsupport (techsupport) Tue, 22 Dec 2009 16:53:02 -0000
RT @ITSupport_24hrs: Perform #System updates and improve #PC speed and performance, including startup and shutdown optimization-http://b ...
Windows 7-Drivers: Unload a driver at shutdown and load it at startup http://forum.techgle.com/showthread.php?t=644716
techglewindows7 (Windows 7a) Sun, 20 Dec 2009 10:46:28 -0000
Windows 7-Drivers: Unload a driver at shutdown and load it at startup http://forum.techgle.com/showthread.php?t=644716

 
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CT Logo Changer - Easy to use logo manager for your start up and shut down screens. It will back up your originals and let you save ten more logo sets for easy one button installation.

Dementia Software - LogoCycler lets you easily manage and automatically cycle your startup, wait, and shutdown screens. Automatic color correction and scaling for logos and see your startup screens animate.
Meta Description: [ Dementia Software ]

Milsoft - Windows BootScreen replacement tool. Replace the default BootScreen in Microsoft Windows XP and 2000 with any image.

Nagarsoft - Developer of desktop utilities that include Logo Organizer 2000 that lets you organize and change your start up and shut down screens. Will converts any GIF, JPG or BMP file to a standard logo file, and supports animated logos.
Meta Description: [ Nagarsoft is a software company specialized in creating productivity applications for Microsoft Windows. Our mission is creating powerful and easy to use applications for home users, professionals and companies, aimed at providing tools to simplify everyday work. ]

RM Soft, Inc - Modify your Windows Startup and Shutdown logos, as well as change the wallpaper, screen saver, and system sounds and themes.

Screen Booty - Change/edit the Startup, Shut Down and Wait Screens in Windows 95/98/NT/ME/2000/XP.

WinScreens Selector and Randomizer - A program to randomize you Start Up, Waiting, Shut Down screens and your wallpaper. Will automatically change your screens every time your computer starts up uses JPG, JIF, GIF, BMP, DIB, RLE, TGA and PCX formats as wallpaper files.

XrX Animated Logo - The utility allows the user to view Windows 98/95 animated startup logos without rebooting their system also allows the user to install a logo, while viewing it, in place of the standard startup logo.

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