Abstract: The invention is a process and reactors designs for simultaneous ultraviolet light/ultrasound(UV/US) treatment of halogenated organic compounds contaminants in water. The reactors are preferably circular cylindrical reaction vessels that accept a central ultrasonic horn. UV light is provided by lamps placed generally parallel to the reactor walls. Or, UV light may be centrally provided in an immersion well near the ultrasonic horn. This way, simultaneous UV/US energy may be effectively provided to the reactors for the remediation of toxic compounds in the water in the reactors. Also, this way, compact and portable reactors may be constructed to permit mobile applications of the UV/US processes.

Abstract: Various embodiments of a sliding cue for gaming tables are shown and described. Each embodiment has a front portion for being held generally stationary in the user's front hand on the table and a back portion for being held in the user's back hand and for being moved forward and backward relative to the front portion. This forward and backward relative motion allows the user to accurately aim his shot, while holding the cue tip stably and generally motionless against or near the ball. The final forward motion of the back portion results in an impact between some part of the back portion and some part of the front portion, thus transferring kinetic energy to the front portion and, thus, to the tip of the front portion, so that the tip impacts the ball and completes the shot. An air-venting or regulating system may be included to adjust the amount of cushioning of the relative movements of the front and back portion of the cue.