A gas distribution ring assembly for a plasma spray system includes a gas distribution ring including a plurality of openings allowing a gas to pass to an inner diameter thereof. A suture clip can be releasably secured to the suture clip holder, and a suture line or lines can pass through the clip and adjacent the suture cutter. The one or more computing devices determine a context for a topic of discussion associated with the communication session. A control device is usable to activate a first actuator with which the a position of the draw bar is changeable in relation to the implement, where the control device can be operated in order to activate the first actuator in such a manner that the latter adjusts the draw bar with the effect of moving the implement toward the outside of a curve. In speech coding method according to a code-excited linear prediction speech coding, a noise level of a speech in a concerning coding period is evaluated by using a code or coding result of at least one of spectrum information, power information, and pitch information, and various excitation codebooks are used based on an evaluation result. This enables biomass on the carriers to contribute more to the biological treatment of the mixed liquor than when the dissolved oxygen concentration was maintained relatively low.