** HQ Scotland & Northern Ireland Region ATC & HQ South East Scotland Wing ATC

** Surveillance radar ( mostly X and S band, i. e. primary ATC Radars )

** ATC code H01 Pituitary and hypothalamic hormones and analogues, a subgroup of the Anatomical Therapeutic Chemical Classification System

** Automatic Train Control ( ATC ): Ayase – Toride

** For entry into a Class C control zone, an aircraft needs a functional Mode C transponder and an ATC clearance.

** For entry into a Class D control zone, an aircraft needs to contact ATC.

** ISO 3166-1 alpha-2 – two-letter country codes which are the most widely used of the three, and used most prominently for the Internet's country code top-level domains ( with a few exceptions ).

** ISO 3166-1 alpha-3 – three-letter country codes which allow a better visual association between the codes and the country names than the alpha-2 codes.

** ISO 3166-1 numeric – three-digit country codes which are identical to those developed and maintained by the United Nations Statistics Division, with the advantage of script ( writing system ) independence, and hence useful for people or systems using non-Latin scripts.

** 7bit – up to 998 octets per line of the code range 1 .. 127 with CR and LF ( codes 13 and 10 respectively ) only allowed to appear as part of a CRLF line ending.

** 8bit – up to 998 octets per line with CR and LF ( codes 13 and 10 respectively ) only allowed to appear as part of a CRLF line ending.

** add, subtract, multiply, or divide the values of two registers, placing the result in a register, possibly setting one or more condition codes in a status register

** SDLC included much more powerful error detection and correction codes than earlier protocols.

** It enabled terminals and 3705 communications processors to send " frames " of data one after the other without waiting for an acknowledgement of the previous frame-the communications cards had sufficient memory and processing capacity to " remember " the last 7 frames sent or received, request re-transmission of only those frames which contained errors that the error detection and correction codes could not repair, and slot the re-transmitted frames into the right place in the sequence before forwarding them to the next stage.

** Country calling codes

** ZIP codes

** ISBN codes for books

** ISSN codes for periodicals

** Telephone numbers, addresses and international postal codes

** DRG codes for FY2005, also referred to as version 23

** DRG codes for FY2010, also referred to as version 27

** Reserved code elements under ISO 3166-1 " Codes for the representation of names of countries and their subdivisions – Part 1: Country codes ", available on request from ISO 3166 / MA

** Countries or areas, codes and abbreviations — list of alpha-3 and numeric codes ( a few territories officially assigned codes in ISO 3166-1 are not included in this list )

** Appendix D – Cross-Reference List of Country Data Codes — comparison of FIPS 10, ISO 3166, and STANAG 1059 country codes

** Country codes — comparison of ISO 3166-1 country codes with other country codes

** Therapeutic effect, a beneficial change in medical condition, often caused by a drug

** Therapeutic touch ( debunked by Emily Rosa at age nine )

** Bachelor of Science in Therapeutic Recreation and Leisure Studies

** Programs of Study: Culinary Arts, Education-Teacher ( Small Children and School-Age ), Personal Care Services, Restaurant and Food Services ( management ), Therapeutic Services.

** Programs of Study: Engineering Technician, Pre-Engineering, Health Science Biotechnology, Health Science Diagnostic Services and Health Information, Medical Support Services, Health Science Therapeutic Service / Patient Care.

** Therapeutic cloning

** Chemical Market Review

** Chemical thermodynamics

** KTH Chemical Engineering and Technology

** Chemical vapor deposition ( CVD )

** Chemical Revolution

** Chemical tanker, a type of tanker designed to transport chemicals in bulk

** Chemical Weapons Convention ( CWC ) signed.

** Organization for the Prohibition of Chemical Weapons ( OPCW ), CWC treaty enters into force.

** Vietnam War: Students at the University of Wisconsin-Madison protest over recruitment by Dow Chemical on the University campus.

** Bob Bryar, American drummer ( My Chemical Romance )

** NAS Award in Chemical Sciences

** Mitsubishi Chemical, the largest Japan-based chemicals company

** Institute of Chemical Engineering

** Chemical Warfare detachment ( 180 )

** The Chemical Brothers for " Block Rockin ' Beats "

** U. S. 83rd Chemical Mortar Battalion

** 84th Chemical Battalion ( motorized )

** Department of Chemical Engineering

** Chemical Engineering

** School of Mechanical and Chemical Engineering

** School of Biomedical, Biomolecular and Chemical Sciences

** Chemical Engineering

** Chemical bonding

** Joint Chemical, Biological, Radiation and Nuclear Regiment