摘要:
A heat transfer system includes a fuel cell module that produces heat and water, and a thermal energy storage module that stores the heat produced by the fuel cell module. The thermal energy storage module includes a phase-change material. A conduit couples the fuel cell module to the thermal energy storage module. The conduit is oriented to channel the water produced by the fuel cell module through the thermal energy storage module.
摘要:
A swab for obtaining a biological surface sample has a shaft extending from a first side of a cap. A first test tube can be coupled to the first side of the cap in a detachable watertight fit, to enclose the swab. A second tube can be coupled to a second side of the cap in a manually detachable watertight fit. The first tube or the swab can include a collection solution; the second tube can be used as a handle to extend the reach of the swab when the first tube is detached; and the second tube can contain an enrichment broth and/or developer solution for the collected sample.
摘要:
An antifungal treatment system includes a light source. The light source may be positioned in a housing having an exit aperture. The light source may be energized to generate a concentrated beam of electromagnetic radiation. The electromagnetic radiation may be visible light radiation that includes infrared radiation. When energized, the concentrated beam may be directed out of the exit aperture by the light source. A focal point of the concentrated beam may be provided in a target area external to the housing to penetrate a human nail and destroy fungus resident thereunder.
摘要:
Apparatus for replacing underground pipe is described, including a resistance plate from which a pair of hydraulic cylinders extend perpendicularly in parallel with each other. The cylinders operate cyclically with a pulling bridge having a cable gripper to provide a sequence of pulling strokes to a cable pulling a mole. The mole pulls a replacement pipe behind it through the old pipe, which has been burst, slit, or otherwise expanded by the mole. The resistance plate is provided with a slot, and the cylinders are positions such as to allow the mode to be pulled substantially completely into the apparatus. A holding bridge is releasably mounted spanning the slot in the reaction plate to position a second cable gripper for holding the cable on return stroke of the pulling bridge. The holding bridge may be removed at the end of the pulling operation to accommodate the mole.
摘要:
A torsional sensor including a high-pressure sealing mechanism for sensing at least one parameter of a high-pressure fluid. The torsional sensor includes a torsional portion including a torsional rod sensor, a reference portion coupled to the torsional portion and including a transducer device and a high-pressure sealing mechanism coupled to the reference portion and the torsional portion and in sealing arrangement therewith. The high-pressure sealing mechanism is configured to provide for sealing therein the transducer device and allow for protrusion therethrough of a torsional rod sensor. At least a portion of the torsional sensor is mountable for immersion in the high-pressure fluid and operable to propagate a torsional wave that interacts with the high-pressure fluid along the at least portion of the torsional sensor so as to affect propagation of the torsional wave in a manner dependent on the at least one parameter of the high-pressure fluid.
摘要:
A communication system comprising one or more transceiver units of a first type and one or more transceiver units of a second type capable of communicating with the transceiver units of the first type; each transceiver unit of the first type comprising: a frequency comparison unit for comparing the frequency of a signal received from a transceiver unit of the second type with a reference frequency; a feedback signal generator for generating a feedback signal dependent on the result of that comparison; and a transmitter for transmitting that signal to the transceiver unit of the second type; and each transceiver unit of the second type comprising: a local frequency reference unit on which the frequency of signals transmitted by it are dependent; and a frequency adjustment unit for receiving the feedback signal and adjusting the local frequency reference unit in dependence on the feedback signal.
摘要:
A pipelayer providing higher lifting capacities without adding weight or size to an undercarriage or boom of the pipelayer is disclosed. The pipelayer is designed and sized to have a maximum lifting capacity when the boom is extended from the undercarriage a predetermined, relatively short distance. However, in use the boom often needs to extend further away from the undercarriage, and in so doing the lifting capacity of the pipelayer decreases. The present disclosure provides additional lifting capacity in that extended range by selectively deploying a counterweight away from the undercarriage once the boom is extended past the predetermined distance. In so doing, not only is the lifting capacity of the pipelayer increased, but the size and weight of the undercarriage and boom are not increased. This enables standard sized undercarriages and other supporting structure to be used, thereby aiding in maneuverability and shipping of the pipelayers, while at the same time reducing manufacturing and usage costs.
摘要:
A location system comprises a plurality of transponders whose locations are detectable by a base system. The base system interrogates (51-55) the transponders one at a time in accordance with a schedule of consecutive time slots. In response to a priority request received (53) from one of the transponders, the base system interrupts the schedule and interrogates substantially immediately (56, 57, 55) the signaling transponder so as to determine its location with minimal latency.
摘要:
A receiver device for receiving a signal that comprises one or more periodic features, the receiver device comprising: a detector configured to listen to the signal during at least a first reception phase, and to be triggered when a feature of the signal is received so as to determine the time of reception of that feature; and a receiver configured to process time-limited segments of the signal so as to derive information from features of the signal received during those segments, the receiver being configured to be dependent on the detector such that after the first reception phase the timings of the time-limited segments processed by the receiver are dependent on the time of reception determined by the detector.
摘要:
A location system comprising a plurality of base units for enabling the locating of a device by means of one or more location signals communicated between the device and the base units and signal processing equipment for: i. determining the location of the device in dependence on the manner in which the location signal(s) is/are received and ii. deriving calibration data for calibrating the system in dependence on the manner in which the location signal(s) is/are received.