Abstract: The present invention provides a device for measuring properties of a fluid flow in a pipe, comprising a first (1), second (2) and third pipe section (3), and where the first pipe section (1) comprises a fluid flow modifying feature arranged such that, during use, a liquid part of the fluid flow will form an annular layer (4) at an inner wall of the second pipe section (2), and the second pipe section (2) is arranged downstream of the first pipe section (1) and comprises at least one near field probe (5) having a first frequency range, and at least one full volume field probe (6) having a second frequency range, the upper limit of the first frequency range being lower than the lower limit of the second frequency range; the third pipe section (3) is arranged downstream of the second pipe section (2) and comprises a resonance enabling element (8), such that said element (8) and at least the second pipe section (2) provides a resonator able to capture parts of the frequency range of the full volume field probe (

Abstract: A system may include sensor equipment, task performance equipment, and a yard maintenance manager. The sensor equipment may include one or more sensors disposed on a parcel of land. The task performance equipment may be configured to perform a task on the parcel. The task may be associated with generating a result that is enabled to be monitored via the sensor equipment. The yard maintenance manager may be configured to interface with the sensor equipment and the task performance equipment to compare measured conditions with desirable conditions to direct operation of the task performance equipment.

Abstract: A system may include sensor equipment, task performance equipment, a yard maintenance manager and a robot. The sensor equipment may include one or more sensors disposed on a parcel of land. The task performance equipment may be configured to perform a task on the parcel. The task may be associated with generating a result that is enabled to be monitored via the sensor equipment. The yard maintenance manager may be configured to interface with the sensor equipment and the task performance equipment to compare measured conditions with desirable conditions to direct operation of the task performance equipment. The robot may be configured to work the parcel and perform as one of the one or more sensors, acting as a device of the task performance equipment, or interacting with the sensor equipment or the task performance equipment.

Abstract: A battery charging system may include one or more battery packs each of which includes control circuitry and a switching assembly, and a charger including a power section and a charge controller. The charge controller and/or the control circuitry may be configured to direct operation of the switching assembly to control charging of the one or more battery packs.

Abstract: The invention regards a hearing device with two or more microphone units each having a conduit leading from a respective sound inlet in the hearing-device housing to a respective transducer, wherein the lengths of the conduits may differ without causing a difference in the frequency characteristics of the microphone units and wherein ultrasonic frequencies may be dampened, while at the same time providing higher freedom in the physical layout of the hearing device. This is achieved in that each conduit comprises a chamber and a pipe forming a resonator, and in that the frequencies of resonance (f1, f2) of the resonators are equal.

Abstract: A battery pack may include a plurality of battery cells, a cell retainer and a heat exchanger assembly. The cell retainer may define a plurality of cell reception slots configured to retain respective ones of the battery cells. The cell retainer may define an enclosure that fixes the battery cells and is not penetrated by any cooling apparatus. The cell retainer may be in thermal communication with the battery cells to transfer heat away from the battery cells. The heat exchanger assembly may be in thermal communication with the cell retainer and external to the cell retainer to at least passively transfer heat away from the cell retainer while the battery pack is operated in a discharge mode. The cell retainer may include a thermally conductive material capable of transferring heat to the heat exchanger assembly and also storing at least some of the heat.

Abstract: The invention regards a hearing device with two or more microphone units each having a conduit leading from a respective sound inlet in the hearing-device housing to a respective transducer, wherein the lengths of the conduits may differ without causing a difference in the frequency characteristics of the microphone units and wherein ultrasonic frequencies may be dampened, while at the same time providing higher freedom in the physical layout of the hearing device. This is achieved in that each conduit comprises a chamber and a pipe forming a resonator, and in that the frequencies of resonance (f1, f2) of the resonators are equal.

Abstract: The invention regards a hearing device with two or more microphone units each having a conduit leading from a respective sound inlet in the hearing-device housing to a respective transducer, wherein the lengths of the conduits may differ without causing a difference in the frequency characteristics of the microphone units and wherein ultrasonic frequencies may be dampened, while at the same time providing higher freedom in the physical layout of the hearing device. This is achieved in that each conduit comprises a chamber and a pipe forming a resonator, and in that the frequencies of resonance (f1, f2) of the resonators are equal.

Abstract: The invention regards a hearing device with two or more microphone units each having a conduit leading from a respective sound inlet in the hearing-device housing to a respective transducer, wherein the lengths of the conduits may differ without causing a difference in the frequency characteristics of the microphone units and wherein ultrasonic frequencies may be dampened, while at the same time providing higher freedom in the physical layout of the hearing device. This is achieved in that each conduit comprises a chamber and a pipe forming a resonator, and in that the frequencies of resonance (f1, f2) of the resonators are equal.

Abstract: Monodisperse polymer microparticles comprising polystyrene or polyacrylate, wherein said particles have a coating formed of at least one transition metal oxide or porous polymer microparticles comprising polystyrene or polyacrylate, wherein said particles have a coating formed of at least one transition metal oxide.