Abstract: Systems may include a first data acquisition subsystem, a second data acquisition subsystem, and a traveling wave analysis subsystem. The traveling wave analysis subsystem may be configured to analyze measured traveling wave data from the first data acquisition subsystem and the second data acquisition subsystem. Additionally, methods of analyzing traveling wave data resulting from a fault on an electric power delivery system may involve analyzing measured electrical properties of at least one traveling wave.

Abstract: A microelectromechanical systems (MEMS) inertial sensing device having a large proof mass with interlocking tabs is disclosed. The interlocking tabs limit motion of the proof mass when subjected to large inertial forces. The interlocking tabs are formed around the periphery of the proof mass and interact with corresponding interlocking tabs formed in a frame to which the proof mass is tethered. The motion of the proof mass is limited by the interlocking tabs, which are formed during MEMS fabrication of the inertial sensing device rather than as part of the packaging process. With a large proof mass, the inertial sensing device can provide high sensitivity in low inertial force environments while the interlocking tabs protect the device when subjected to high inertial forces.

Abstract: A device for treating uranium tailings with microorganism is provided and includes a treatment container, a spray water distribution assembly, a microbial incubator and a first pump. The water is transported from the microbial incubator to the spray water distribution assembly through the first pump, allowing the microorganisms to enter the interior of the uranium tailings in the treatment container. After treatment is completed, the water is collected by the water collection cylinder and sent back to the microbial incubator for recovery, so as to reduce the waste of microorganisms. The even distribution of horizontal spray pipes can evenly spray water containing microorganisms on the uranium tailings in the treatment container, which makes the distribution of microorganisms in the uranium tailings more uniform and can prevent inadequate treatment and improve the treatment efficiency of microorganisms on uranium tailings.

Abstract: An electronic device is disclosed. The electronic device includes an active component, a power regulating component disposed on the active component, and a patterned conductive element disposed between the active component and the power regulating component. The patterned conductive element is configured to provide one or more heat dissipation paths for the active component and to provide a power path between the active component and the power regulating component.

Abstract: Using at least one sensor positioned to monitor a fluid conduit, an acoustic event is detected. A speed of sound of the acoustic event is determined. The speed of sound of the acoustic event is compared to a baseline speed of sound. Based on the comparison, whether or not a leak has occurred in the fluid conduit may be determined.

Abstract: A vapor compression system control implementations that maintain surface temperature uniformity of at least one cold plate throughout pulsed thermal loads from a minimal or zero load state suddenly to a high or 100% of design capacity state where the heat pulse occurrence, frequency, and durations are not known a priori. Vapor compression system control implementations that maintain surface temperature uniformity of at least one cold plate throughout pulsed thermal loads from a minimal or zero load state suddenly to a high or 100% of design capacity state where the heat pulse occurrence, frequency, and durations are not known a priori. Rapid thermal pulse applications require a robust control strategy of the cold plate assembly to maintain cold plate surface temperature uniformity. In one implementation, a control system for the cold plate assembly that maintains a uniform cold plate temperature given controlled supply and suction conditions is contemplated.

Abstract: A laser processing device for forming vias has a galvo mirror module, a first lens, a second lens, a focusing module, and a laser source. The laser source emits a laser beam through the first lens and the second lens to convert the laser beam into an incident ring beam. The galvo mirror module reflects the incident ring beam into a reflected ring beam into the focusing module to convert the reflected ring beam into a Bessel-like beam. The galvo mirror module has a scanning direction and shifts a reflection direction of the reflected ring beam to move an end of the reflected ring beam along the scanning direction. The focusing module has a third lens linearly slid along the scanning direction to reduce variations in shape and laser fluence of the Bessel-like beam focused at different positions.

Abstract: The present disclosure provides a semi-physical simulation test bench and test method for a multi-machine parallel operation device of gas turbines. The gas turbines are all connected with gearbox shafts through SSS clutches, torque meters and couplers, and then a hydraulic dynamometer, an electric turbine dynamometer and a generator are independently or jointly driven through couplers and torque meters so as to charge a storage battery. Multi-shaft gearboxes comprise parallel operation gearboxes, and are connected with a bridging gearbox through couplers, electromagnetic clutches, supports, torque meters and couplers. The gas turbines can drive an electric dynamometer and the electric turbine dynamometer independently or cooperatively, so that the system has good operation characteristics under different working conditions. Meanwhile, the storage battery is additionally arranged, the flexibility of the test bench is improved, and the energy utilization rate is increased.

Abstract: An impedance measurement circuit for determining a complex impedance of a capacitive sensor that is configured for employing at least one electric heater member as an electrode to be operated in loading mode. The measurement circuit includes: a signal generating unit for providing an electric measurement signal; a signal sensing circuit measuring current through the at least one electric heater member; an electric heater member connection circuit comprising a plurality of MOSFETs for selectively electrically connecting the electric heater member either to the signal sensing circuit for complex impedance measurement or to a DC electric power unit for heating purposes; and a control and evaluation unit that is configured for controlling a switching status of the plurality of MOSFETs according to a predefined sequence, and for determining a complex impedance from the determined currents with reference to a complex reference potential during predefined stages of the predefined sequence.

Abstract: An electronic device is provided. The electronic device includes an antenna array including a plurality of antenna patterns collectively configured to provide a scan-angle coverage. Each of the antenna patterns includes a curved surface.

Abstract: A vehicle-mounted concrete pump includes: a concrete pump system designed to convey concrete; a hydraulic drive pump system which is designed to drive the concrete pump system and comprises a hydraulic pump drive shaft; a combustion drive motor system designed to drive the hydraulic pump drive shaft of the hydraulic drive pump system; and a liquid-cooled synchronous drive motor which is designed to drive the hydraulic pump drive shaft of the hydraulic drive pump system.

Abstract: An apparatus includes at least two disk spring washers, at least one ring-shaped outer spacer coupled to the outer edges of one or two of the disk spring washers, and at least one ring-shaped inner spacer coupled to the inner edges of one or two of the disk spring washers. The apparatus also includes a central shaft concentric with the disk spring washers, the outer spacers, and the inner spacers. The apparatus also includes a bottom attachment portion coupled to the bottom of the central shaft to support the at least two disk spring washers, and a top attachment portion configured to slide vertically along the central shaft. The top attachment portion is configured to, with an application of a downward force, compress the at least two disk spring washers.

Abstract: A fluidized bed or fluidized bed/spouted bed granulator into which urea seed particles, an aqueous urea solution and air are introduced to produce urea particles with an average particle size of 1 mm or more. The granulator includes a box-shaped granulation chamber with a bottom floor, a top and side surfaces. Inner wall surfaces of the chamber are of a metal plate material, an upper part of the side or top surfaces includes an exhaust outlet, the side surfaces or top surface includes an inlet for introducing the seed particles, the side surfaces include a collection port for the particles, the aqueous urea solution is introduced from the bottom floor or the side surfaces, the air is introduced from the bottom floor or the bottom floor and the side surfaces, and at least a portion of the inner wall surfaces of the granulation chamber is treated by surface roughening.

Abstract: A tubular wave energy converter configured to remain afloat near the surface of a wave field and trap a water column oscillating asymmetrically to the wave field in which the converter is located. Water column oscillations create a pressure flux providing motive power for a generator. The converter, generator and a powered payload making up an autonomous wave powered device are packaged to fit within and be deployed by a torpedo launcher. The autonomous device may be deployed above or beneath the surface. Device buoyant characteristics are configured to maintain the device afloat and self-righting toward an upright oriented for operation in the wave field.

Abstract: A semiconductor package structure is provided. The semiconductor package structure includes an electronic component, and an inductance component. The protection layer encapsulates the electronic component and has a top surface and a bottom surface. The top surface and the bottom surface collectively define a space to accommodate the electronic component. The inductance component outflanks the space from the top surface and the bottom surface of the protection layer.

Abstract: A process for separating one or more one-ring cycloparaffins and one or more multi-ring cycloparaffins from a hydrocarbon mixture is disclosed. The process comprises the steps of providing the hydrocarbon mixture; and contacting the hydrocarbon mixture with an adsorbent material comprising a metal organic framework to separate the one or more one-ring cycloparaffins and the one or more multi-ring cycloparaffins from the hydrocarbon mixture. The process is conducted in a liquid phase.

Abstract: Methods and systems for measuring cluster efficiency for stages of wellbores are provided herein. One method includes selecting a frequency band for generating broadband tube waves within the fluid column of the wellbore and generating the broadband tube waves within the fluid column of the wellbore using a pressure pulse generator that is hydraulically coupled to the wellbore. The method also includes recording data corresponding to the broadband tube waves and reflected broadband tube waves using pressure receivers that are hydraulically coupled to the wellbore. The pressure receivers are arranged into arrays with two or more pressure receivers in each array. The data recorded by the pressure receivers relate to characteristics of reflectors (including perforation cluster/fracture interfaces) within the wellbore.

Abstract: A system for communication via satellite between a gateway and a plurality of terminals comprises: a controller device to calculate a time-frequency plan of burst signals from a terminal and to transmit, based on the time-frequency plan, to the terminal information including configuration information on transmit burst signals; a multi-carrier demodulator structure arranged to receive a resulting signal comprising receive signals and arranged to receive information for the receive signals.

Abstract: A downhole blowout preventer has a blowout preventer tubing string containing a circulation unit, a packer unit and a pressure-building unit connected in sequence from top to bottom. The pressure-building unit is configured to be activated in response to a command, so as to build up pressure in a space inside the blowout preventer tubing string. The packer unit is configured to be activated when a pressure in said space reaches a first predetermined value, so as to seal an annulus between said blowout preventer tubing string and an external casing or borehole. The circulation unit is configured to be activated when the pressure in said space reaches a second predetermined value, thereby creating a circulation path between an interior and an exterior of the blowout preventer tubing string. The first predetermined value is less than the second predetermined value.