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).
(vÄ'ber test) Test in which the stem of a vibrating tuning fork is placed on the midline of the head to ascertain in which ear the sound is heard by bone conduction. A hearing test using a vibrating tuning fork which is held at various points along the midline of the skull and face.