Abstract: Provided are a self-healing polyurethane (PU) material, a double-layer self-healing PU film, and a preparation method and use thereof. In the disclosure, the self-healing PU material includes a PU material I and a PU material II that are packaged separately. A soft-layer PU film prepared based on the PU material I and a hard-layer PU film prepared based on the PU material II could be combined to form a double-layer PU film.

Abstract: The present invention relates to a box of one or more absorbent articles, the box comprising pairs of opposed side walls, pairs of opposed top flaps foldably connected to corresponding side walls, pairs of opposed bottom flaps foldably connected to corresponding side walls, and a weakened area defined by an external weakened line at one of first opposed side walls. The weakened area comprises a first section and a second section divided by an internal weakened line, and an adhesive tape having a tape width and a tape end, and covering adjacent edges of the second opposed top flaps to seal top of the box. The adhesive tape extends along a portion of the one of first opposed side walls in such a way that the adhesive tape covers part of the second section so as not to cover the internal weakened line.

Abstract: The present invention relates to a box of one or more absorbent articles, the box comprising pairs of opposed side walls, pairs of opposed top flaps foldably connected to corresponding side walls, pairs of opposed bottom flaps foldably connected to corresponding side walls, and a weakened area defined by an external weakened line at one of first opposed side walls. The weakened area comprises a first section and a second section divided by an internal weakened line, and an adhesive tape having a tape width and a tape end, and covering adjacent edges of the second opposed top flaps to seal top of the box. The adhesive tape extends along a portion of the one of first opposed side walls in such a way that the adhesive tape covers part of the second section so as not to cover the internal weakened line.

Abstract: The present invention relates to a box of one or more absorbent articles, the box comprising pairs of opposed side walls, pairs of opposed top flaps foldably connected to corresponding side walls, pairs of opposed bottom flaps foldably connected to corresponding side walls, and a weakened area defined by an external weakened line at one of first opposed side walls. The weakened area comprises a first section and a second section divided by an internal weakened line, and an adhesive tape having a tape width and a tape end, and covering adjacent edges of the second opposed top flaps to seal top of the box. The adhesive tape extends along a portion of the one of first opposed side walls in such a way that the adhesive tape covers part of the second section so as not to cover the internal weakened line.

Abstract: A system includes a rectifier having an input configured to receive a variable AC input voltage and convert the AC input voltage to a rectified output voltage. A power converter has an input coupled to receive the rectified output voltage and to provide a DC supply voltage at an output thereof. A low drop-out regulator has an input coupled to receive the supply voltage and is configured provide a regulated voltage. A sensor is coupled to receive the regulated voltage as a power source and is configured to sense a condition and provide sensor data indicative of the sensed condition.

Abstract: A sensor network that is easy to deploy and substantially maintenance-free is disclosed. Sensor networks in accordance with the present invention include a base station and at least one sensor node that is operative for monitoring the occupancy of an area and wirelessly communicating information to the base station. The sensor node includes an energy harvester for converting ambient energy into electrical energy and an energy manager that enables self-powering of the sensor node using only the electrical energy derived from the ambient energy. The energy manager also includes a cold-start module that enables initiation of sensor-node operation even in the absence of any stored energy onboard the sensor node.

Abstract: A system includes a rectifier having an input configured to receive a variable AC input voltage and convert the AC input voltage to a rectified output voltage. A power converter has an input coupled to receive the rectified output voltage and to provide a DC supply voltage at an output thereof. A low drop-out regulator has an input coupled to receive the supply voltage and is configured provide a regulated voltage. A sensor is coupled to receive the regulated voltage as a power source and is configured to sense a condition and provide sensor data indicative of the sensed condition.

Abstract: A sensor network that is easy to deploy and substantially maintenance-free is disclosed. Sensor networks in accordance with the present invention include a base station and at least one sensor node that is operative for monitoring the occupancy of an area and wirelessly communicating information to the base station. The sensor node includes an energy harvester for converting ambient energy into electrical energy and an energy manager that enables self-powering of the sensor node using only the electrical energy derived from the ambient energy. The energy manager also includes a cold-start module that enables initiation of sensor-node operation even in the absence of any stored energy onboard the sensor node.

Abstract: An apparatus and method for detecting a gas with high sensitivity, high SNR, and low cost is disclosed. Embodiments of the present invention include sensor nodes that communicate with a common controller, where each sensor node includes a resonant sensor that comprises a resonator having a selectively chemisorptive layer disposed upon it. The chemisorptive layer is a nanoparticle-based layer that improves the trapping probability for target-gas molecules, thereby improving the correspondence of the resonance frequency of the resonator to the gas concentration in the atmosphere in which it resides, and improving the sensitivity of the resonant sensor as compared to prior-art resonant mass sensors. Measurement of an electrical parameter of the chemisorption layer can also be used as a secondary detection mode. By employing the chemisorptive layer as an efficient and selective mass-collection layer affords embodiments of the present invention improved noise immunity.