BASF LNT (Lean NOx Trap) technology removes NOx from diesel engine exhaust.
[edit on Wikidata] Sounding or urethral sounding is the medical use of probes called sounds to increase the inner diameter of the urethra and to locate obstructions in it. Sounds are also used to stretch the urethra in order to receive genital piercing. Urethral sounding and urethral play are also used to refer to this practice in a sexual context. Urethral play can involve the introduction of either soft or rigid items into the meatus of the penis (as well as farther in).
The piano string acts as a tone generator. The sounding board's function is to truly reflect and amplify that tone. The sounding board is the most important single part in the piano because if the board is bad, you do not have a piano until there has been a major repair job. No real music can come out of a conventional piano except through the sounding board. So that it will vibrate freely, a sounding board is necessarily a very thin panel, usually from 3/16 to 3/8 of an inch thick.