noun, Chemistry. 1. the univalent ion, NH 4 + , or group, NH 4 , which plays the part of a metal in the salt formed when ammonia reacts with an acid. ammonium nitrate is extremely common, and pretty dangerous, and also extremely useful.
1 Double-click the Allow users to connect remotely using Terminal Services policy. 2  Set the policy to Enabled, and then click OK. 3  Right-click My Computer and click Properties. 4  Click the Remote tab. 5  In the Remote Desktop section, click to clear Allow users to connect remotely to this computer, and then click OK.ou can also use the following procedure to disable Remote Desktop; however, if you use the preceding procedure, the following configuration is overridden: NOTE: Remote Desktop is disabled by default on Windows XP Professional. 1  Click Start, click Run, type gpedit.msc, and then click OK.
To enable Remote Desktop Services ActiveX controls. 1  In Internet Explorer, click Tools, and then click Internet Options. 2  On the Security tab, click Custom level. 3  In the ActiveX controls and plug-ins section, do the following: Under Download signed ActiveX controls, click Prompt. Under Run ActiveX controls and plug-ins, click Enable.