Rotation of Sun and Planets
The rotation period of a large body circled by one or more satellites can be calculated theoretically.
http://www.geocities.com/saeles/planetsrotation.htm

BackupAssist
Software designed to make it easy to implement tape backup rotation strategies easily. It provides scheduling, email notifications, and industry standard media rotation schemes.
http://www.backupassist.com/BackupAssist/

Compressor Trader
The Compressor and Vacuum trading post on the web, list or buy new or used equipment.
http://compressortrader.com/

Lone Star Compressor
Reciprocating compressors for CO2 service, hydrogen service and process gases offered. Lone Star Compressor offers compressors alone or in packages as well as parts and repair service for brands such as Ingersoll-Rand, Worthington and Gardner Denver.
http://www.lonestarcompressor.com/

Air Compressor Equipment Inc.
Special compressors for industrial, high pressure and gas compressors
http://www.aircompeq.com/

ACS Air Compressor Systeme GmbH
Als Experte für Thermo Bypass Ventil Systeme, Öltemperaturregler bwz. Thermoregler & Bypass-Ventil Systeme, realisiert die ACS Air Compressor Systeme GmbH sowohl Thermostat & Temperaturschalter wie Reglereinsätze, Thermobypassventil (Bypassventil) & Ölthermostat Lösungen für die Hydraulik, als auch Öltemperaturreglereinsätze für Ölregler, Thermoventil & Wax Elemente für thermostatische Regeler.
http://www.acs-germany.de/

Advanced Compressor Technology
Service, overhaul and repair of industrial compressors, re-manufacturing of compressor parts, Located in Addison, Illinois.
http://www.actcomp.com

Pipelined phase-rotation FFT
By David O'Halloran. The Welchel phase-rotation FFT is a new form of the fast Fourier transform (FFT) that replaces data movement at runtime with equivalent multiplications by precomputed constants. The result is an FFT that is easy to pipeline.
http://www.cs.cmu.edu/afs/cs.cmu.edu/project/iwarp/member/fx/public/www/phase1.html

Air Compressor Technology, Inc.
We offer remanufactured and exchange airends for rotary screw and vane compressors. Air Compressor Technology offers a reduction in down time and a higher quality remanufactured product.
http://www.airends.com

Electromagnetic Rotation
The experiments of Oersted, Faraday, Ampere, Sidorovich on electromagnetic rotation
http://sidam.at.tut.by