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  2. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    An increasing French size corresponds to a larger external diameter. This is contrary to Birmingham gauge, where an increasing gauge corresponds to a smaller diameter needle. The French size is a measure of the outer diameter of a catheter (not internal drainage channel, or inner diameter). So, for example, if a two-way catheter of 20 Fr is ...

  3. List of channel numbers assigned to FM frequencies in North ...

    en.wikipedia.org/wiki/List_of_channel_numbers...

    FM channel numbers are most commonly used for internal regulatory purposes. The range originally adopted in 1945 began with channel 201 (88.1 MHz), or a value high enough to avoid confusion with television channel numbers, [2] which over the years have had values ranging from 1 to 83. Having a gap between the highest TV channel number and the ...

  4. Television channel frequencies - Wikipedia

    en.wikipedia.org/wiki/Television_channel_frequencies

    Channels 15 and 16 are allocated for use in the African Broadcasting Area only. [4] Channel 2A was only ever used in Austria for the Sendeturm Jauerling to avoid interferences with neighboring Eastern European TV stations. Channel 3 in Belgium, RTBF 1 broadcast from the Liège transmitter with 100 kW until the switchover to DVB-T.

  5. Foley catheter - Wikipedia

    en.wikipedia.org/wiki/Foley_catheter

    Foley and similar brand catheters usually have two separated channels, or lumina (or lumen), running down its length. One lumen, opens at both ends, drains urine into a collection bag. The other has a valve on the outside end and connects to a balloon at the inside tip.

  6. Rating curve - Wikipedia

    en.wikipedia.org/wiki/Rating_curve

    The parameter is typically in the range of 2.0 to 3.0 when a stream is flowing under section control, and in the range of 1.0 to 2.0 when a stream is flowing under channel control. A stream will typically transition from section control at lower gauge heights to channel control at higher gauge heights.

  7. Parshall flume - Wikipedia

    en.wikipedia.org/wiki/Parshall_flume

    Parshall flumes require a drop in elevation through the flume. To accommodate the drop in an existing channel either the flume must be raised above the channel floor (raising the upstream water level) or the downstream channel must be modified. As with weirs, flumes can also have an effect on local fauna. Some species or certain life stages of ...

  8. Sound transmission class - Wikipedia

    en.wikipedia.org/wiki/Sound_transmission_class

    Light-gauge (25-gauge or lighter) provides better sound isolation than 16-20-gauge steel, and noticeably better performance than wood studs. [21] When heavy gauge steel or wood studs are spaced 16 inches (410 mm) on center, additional resonances form which further lower the sound isolation performance of a partition.

  9. Channel capacity - Wikipedia

    en.wikipedia.org/wiki/Channel_capacity

    An application of the channel capacity concept to an additive white Gaussian noise (AWGN) channel with B Hz bandwidth and signal-to-noise ratio S/N is the Shannon–Hartley theorem: C = B log 2 ⁡ ( 1 + S N ) {\displaystyle C=B\log _{2}\left(1+{\frac {S}{N}}\right)\ }