Abstract: Devices, systems, and methods for contactless vehicle codes are presented. A method may include receiving, by a vehicle, a first request to present a code associated with an activity. The method may include sending a second request to a device, the second request indicative of the activity. The method may include receiving, from the device, the code, wherein the code includes information associated with the activity. The method may include presenting, using a display of the vehicle, the code.

Abstract: Devices, systems, and methods for contactless vehicle codes are presented. A method may include receiving, by a vehicle, a first request to present a code associated with an activity. The method may include sending a second request to a device, the second request indicative of the activity. The method may include receiving, from the device, the code, wherein the code includes information associated with the activity. The method may include presenting, using a display of the vehicle, the code.

Abstract: Disclosed are methods of removing particulate matter from a wastewater stream, comprising providing an activating agent capable of being affixed to the particulate matter in the wastewater stream; affixing the activating agent to the particulate matter to form activated particles residing in the wastewater stream; processing the activated particles in a thickener device to produce a population of thickened flocs in the fluid stream, wherein the thickened flocs comprise the particulate matter; contacting the thickened flocs with a re-activating agent to form re-activated particles comprising the particulate matter; providing a population of tether-bearing anchor particles, wherein the tether-bearing anchor particles have an affinity for the re-activated particles; attaching the tether-bearing anchor particles to the re-activated particles to form removable complexes that comprise the particulate matter, and removing the removable complexes, thereby removing the particulate matter from the wastewater stream.

Abstract: An applicator having a handle; a shank coupled to the handle; a first wall coupled to the shank; a second wall coupled to the first wall, the second wall being perpendicular to the first wall; a third wall coupled to the second wall, the third wall being parallel to the first wall; and an applying surface coupled to the first, second and third walls. The first wall, second wall and the third wall form a U-shaped channel dimensioned to fit around the bottom of a door having a thickness less than about 2 inches.

Abstract: An applicator having a handle; a shank coupled to the handle; a first wall coupled to the shank; a second wall coupled to the first wall, the second wall being perpendicular to the first wall; a third wall coupled to the second wall, the third wall being parallel to the first wall; and an applying surface coupled to the first, second and third walls. The first wall, second wall and the third wall form a U-shaped channel dimensioned to fit around the bottom of a door having a thickness less than about 2 inches.