Single-phase generator The early generators for those single-phase traction networks are single-phase generators. Even with newer three-phase motors which were introduced to some modern trains, the single-phases transmission for traction networks survive their time and are still in use in many railways today. However, many traction power stations have replaced their generators over time to use three-phase generators and convert into single-phase for transmission. In the early development of hydroelectricity, single-phase generators played an important role in demonstrating the benefits of alternating current. In 1891, a 3,000 volts and 133 Hz single-phase generator of 100 horsepower was installed at Ames Hydroelectric Generating
Single-use bioreactor primarily upstream equipment www.millipore.com, GE Healthcare Life Sciences with its WAVE brand rocking, single-use bioreactor and Thermo Scientific www.thermo.com with its traditional stirred or impeller shaft based mixing approach does also have some of this technologies available. Only Sartorius Stedim, PBS Biotech, Thermo Fisher Hyclone, and Xcellerex (now part of GE Healthcare Life Sciences) have the ability to provide a fully scalable solution for a complete lab-to-production bioprocess. The BioProcess Systems Alliance (BPSA) is the single use association advocating broader application of single-use to include cGMP Good manufacturing practice use which will require FDA support. The agency has stated in