Abstract: A machine for throwing balls is provided that can accurately adjust the vertical height or pitch and the lateral placement or yaw of balls being thrown. The machine includes a pitch housing, a threaded pitch adjustment shaft rotatably mounted to the pitch housing, a pitch yoke threadably mounted to the pitch adjustment shaft, a yaw housing to which the pitch housing is fixed, and a threaded yaw adjustment shaft rotatably mounted to the yaw housing. Also included is a yaw yoke mounted to the yaw housing and to the yaw adjustment shaft, and a stand to which the yaw housing is rotatably mounted.

Abstract: A machine for throwing balls is provided that includes a pitch housing, a rotatable threaded pitch adjustment shaft rotatably mounted to the pitch housing, a pitch yoke threadably mounted to the pitch adjustment shaft to travel with respect to the pitch adjustment shaft as the pitch adjustment shaft is rotated, a pitch pivot arm having proximal and central portions, the proximal portion of the pitch pivot arm being pivotally mounted at a pivot point, the pitch yoke being mounted to the central portion of the pitch pivot arm, at least one rotary wheel mounted to the pitch pivot arm such that the pitch yoke is mounted to the pitch pivot arm between the pivot point and the rotary wheel mounting, and at least one motor coupled to the at least one rotary wheel and configured to rotate the at least one rotary wheel to throw the ball toward an athlete. A method may also be provided for precisely adjusting, along a first plane, a throw by a throwing machine.

Abstract: Ballast and/or cooling water biocidal treatment and disinfection systems and techniques are provided. The systems utilize oxidation reduction potential control to regulate addition, or concentration of an electrocatalytically generated biocidal agent to disinfection levels in ship buoyancy and to biofouling levels in ship cooling water systems. The disinfection and biofouling control systems provide suitable treatment while reducing the potential for corrosion of ship components and, in some cases, undesirable disinfection byproducts.

Abstract: Ballast and/or cooling water biocidal treatment and disinfection systems and techniques are provided. The systems utilize oxidation reduction potential control to regulate addition, or concentration of an electrocatalytically generated biocidal agent to disinfection levels in ship buoyancy and to biofouling levels in ship cooling water systems. The disinfection and biofouling control systems provide suitable treatment while reducing the potential for corrosion of ship components and, in some cases, undesirable disinfection byproducts.