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Triphenyl tetrazolium chloride (TTC), or simply tetrazolium chloride (with the formula 2,3,5-triphenyl-2H-tetrazolium chloride) is a redox indicator commonly used in biochemical experiments especially to indicate cellular respiration. It is a white crystalline powder, soluble in water, ethanol and acetone but insoluble in ether.
EAX #1; EAX #2; EAX #3; ESU 3072 Line; FW1 (Four Wire 1 Toll Switch) GTD-3 EAX (Toll switch, NOT CCS7 capable although CCIS capable) GTD-5 EAX (Class 5 switch, many in use today, was the primary switch in former GTE exchanges. Now supported by Lucent.) GTD-120 Digital PABX; GTD-1000 Digital PABX; GTD-4600 Digital PABX; OMNI-S1 Digital PABX ...
Options available included full cabin doors, flaperons, brakes, wheel pants and a custom-fitted trailer. [1] The original Freebird I has been replaced in the company line by the improved LiteSport Ultra. A new variant, the Freebird 103, using the same wing with a redesigned fuselage, was under development in 2009. [3] [4]
The Bell DataPhone 300 used the same protocol as the Bell 103. This modem is from 1978. The Bell 103 modem or Bell 103 dataset was the second commercial modem for computers, released by AT&T Corporation in 1963. [1] [2] It allowed digital data to be transmitted over regular unconditioned telephone lines at a speed of 300 bits per second.
The following is a list of CMOS 4000-series digital logic integrated circuits.In 1968, the original 4000-series was introduced by RCA.Although more recent parts are considerably faster, the 4000 devices operate over a wide power supply range (3V to 18V recommended range for "B" series) and are well suited to unregulated battery powered applications and interfacing with sensitive analogue ...
The first track to be started onsite was an initial 6 mi (9.7 km) segment of the planned Linear Induction Motor Research Vehicle (LIMRV) test track, built by Morrison-Knudsen; it was anticipated that the initial segment would later be extended to a full 21.8 mi long (35.1 km) oval and a parallel oval guideway would be completed for the Tracked Air Cushion Research Vehicle (TACRV).
[1] NTC thermistors are widely used as inrush-current limiters and temperature sensors, while PTC thermistors are used as self-resetting overcurrent protectors and self-regulating heating elements . An operational temperature range of a thermistor is dependent on the probe type and is typically between −100 and 300 °C (−148 and 572 °F).
The Urban Transportation Development Corporation Ltd. (UTDC) is a former Crown corporation owned by the Government of Ontario, Canada.It was established in the 1970s as a way to enter what was then expected to be a burgeoning market in advanced light rail mass transit systems. [1]