Abstract: Voltage droop control is disclosed. A device includes a first component coupled to an external power supply and a second component coupled to the external power supply. The first component includes a first input configured to receive a first voltage, a first internal power supply configured to be charged by the external power supply in response to the first voltage corresponding to a first logical value, and a voltage droop controller configured to output a second voltage via a first output. The second voltage corresponds to the first logical value in response to a first voltage level of the first internal power supply satisfying a second voltage level. The second component includes a second input configured to receive the second voltage from the first output.

Abstract: A multimedia file recommending device capable of matching entertainment file to user mood or state includes an input device to receive emotional value X sensed from or inputted by a user, a storage device, and a processor. The storage device stores multimedia files each associated with an emotional value. The processor selects a multimedia file from the multimedia database according to default rules, wherein a difference between the emotional value associated with the selected multimedia files and the emotional value X falling within a preset range. A multimedia file recommending method is also provided.

Abstract: Systems and methods are disclosed for removing nano-particulates from a gas. The systems may include a chamber to contain the particulate-containing gas, a source of the gas, a source of water vapor, a source of a supersonic gas, and at least one ultrasonic transducer in contact with the chamber. The chamber may also include one or more receptacles to receive the particulates. The methods may include introducing the particulate-containing gas and the water vapor into the chamber. A gas may be introduced into the chamber at supersonic speeds thereby cooling the water vapor to form nucleating ice crystals. The ultrasonic transducers may then introduce ultrasonic power into the chamber thereby causing the particulates to contact the ice crystals. The nucleating crystals, with their attached particulates, may then fall under gravity to be captured in the receptacles.

Abstract: An apparatus for disassembling an electronic component from a circuit board includes a base, a controller, a positioning assembly, and a heating and suction assembly. The controller is fixed to the base. The positioning assembly is arranged on the base and coupled to the controller. The positioning assembly is configured to be controlled by the controller to position the circuit board at a first predetermined position. The heating and suction assembly is movably arranged on the base and coupled to the controller. The heating and suction assembly is moved to a second predetermined position to heat the electronic component and moved to a third predetermined position to attract and hold the heated electronic component by suction, whereby the electronic component is disassembled from the circuit board.

Abstract: Voltage droop control is disclosed. A device includes a first component coupled to an external power supply and a second component coupled to the external power supply. The first component includes a first input configured to receive a first voltage, a first internal power supply configured to be charged by the external power supply in response to the first voltage corresponding to a first logical value, and a voltage droop controller configured to output a second voltage via a first output. The second voltage corresponds to the first logical value in response to a first voltage level of the first internal power supply satisfying a second voltage level. The second component includes a second input configured to receive the second voltage from the first output.

Abstract: A system for staring a large-scale power load in a micro grid comprises a PCC grid connection switch, a micro grid alternating-current bus, an active power filter (APF), an energy storage inverter, an energy storage battery, a current-limiting resistor R, contactors K1-K3, a time relay KT, a power supply relay board, a micro grid maser control system, a frequency converter rectifying circuit, a frequency converter filter circuit, and a frequency converter inverter circuit. There are the advantages: an output torque of a power load can be effectively improved by using a variable frequency starting apparatus, and a starting current is also small; the provided method can effectively reduce a harmonic current when a variable frequency starting apparatus starts a power load, the phenomenon that two power sources supply power on a direct-current side of the variable frequency starting apparatus at the same time is avoided, thereby improving the stability and the economy of a micro grid.

Abstract: Disclosed is a new method for preparing a methyl substitute of a linezolid intermediate, (S)-2-(3-(3-fluoro-4-morpholinophenyl)-2-oxo-5-oxazoline) (I), wherein the intermediate (I) is obtained by the cyclization of 3-fluoro-4-morpholinophenyl isocyanate (II) and epoxy compound (III). This process has a short process route, low cost, easy operation, and high yield, so is suitable for a large-scale industrial production.

Abstract: An apparatus for removing cables is provided. The apparatus includes a worktable. An upper surface of the worktable is used to fix at least one motherboard separately. Each motherboard includes a cable fixed thereon. The apparatus includes a feeding assembly, a driving assembly and a removing assembly. The driving assembly and the removing assembly are located on the feeding assembly. The feeding assembly is used to drive the driving assembly and the removing assembly to move to a pre-defined position. The driving assembly is used to drive the removing assembly to remove the cable from the motherboard.

Abstract: A detaching apparatus includes a bench, a first supporting member attached to the bench, a convey system, a positioning member, a second supporting member, and a detaching member. The convey system is attached to the first supporting member for conveying a circuit board. The positioning member is attached to the first supporting member for positioning the circuit board. The second supporting member is attached to the bench and aligning with the first supporting member. The detaching member is attached to the second supporting member and includes a sliding bracket moving vertically relative to the bench, a moving block moving horizontally in the sliding bracket, a blade attached to the moving block, and a vacuum suction cup attached to the moving block and aligning with the blade.

Abstract: This invention is about a cascade cold dynamic cycle refrigeration apparatus, which makes up cold energy with cryogenic liquid refrigerant by boosting with a dual-stage liquid circulating pump, after its temperature is increased via the cold regenerator, it enters the cold consuming apparatus to provide cold and becomes a gaseous refrigerant, then it flows through the expander to expand and make work by reducing pressure and temperature, and then returns to the refrigerant tank via the cold regenerator or/and throttle valve.

Abstract: The present invention is comprised of a heat supply circulation circuit: the liquid refrigerant from the refrigerant tank, after being boosted by the cryogenic liquid pump, enters the condensing evaporator, to transfer the cold to the backflow refrigerant at a higher temperature, after increasing pressure and temperature via the compressor, it is sent to the user system to supply heat, the refrigerant gas from the user system enters the condensing evaporator, and returns via the throttle valve to the refrigerant tank; and a cold supply circulation circuit: the liquid refrigerant from the refrigerant tank, after boosting by the cryogenic liquid pump, enters the condensing evaporator, to transfer the cold to the backflow refrigerant in the cold recovery channel, the refrigerant, after releasing the cold energy with increased temperature, flows to the user system to supply cold, the refrigerant gas from the user system returns via the compressor, condensing evaporator, and throttle valve to the refrigerant tank.

Abstract: Acoustic diodes, devices incorporating such diodes; and methods of using such devices are disclosed. An acoustic diode may include a periodic acoustic grating and a uniform plate. The periodic acoustic grating may include a plurality of .gratings. The uniform plate may foe separated from-the periodic acoustic-grating by a resonant cavity. The acoustic diode may be configured to have a first transmission, efficiency for acoustic waves incident on the periodic acoustic grating that is greater than a second transmission efficiency for acoustic waves incident on the uniform plate. The acoustic waves may have a. wavelength within a range of wavelengths. Devices incorporating the acoustic diode may include medical imaging devices, such as ultrasound devices, and noise reduction devices.

Abstract: Systems and methods are disclosed for removing nano-particulates from a gas. The systems may include a chamber to contain the particulate-containing gas, a source of the gas, a source of water vapor, a source of a supersonic gas, and at least one ultrasonic transducer in contact with the chamber. The chamber may also include one or more receptacles to receive the particulates. The methods may include introducing the particulate-containing gas and the water vapor into the chamber. A gas may be introduced into the chamber at supersonic speeds thereby cooling the water vapor to form nucleating ice crystals. The ultrasonic transducers may then introduce ultrasonic power into the chamber thereby causing the particulates to contact the ice crystals. The nucleating crystals, with their attached particulates, may then fall under gravity to be captured in the receptacles.

Abstract: A method for preparing a Rivaroxaban intermediate I is presented, including the following step: in a non-protonic solvent, under the effect of lewis acid, performing cyclization reaction on 4-(4-phenyl isocyanate)morpholine-3-ketone (II) and (S)-epoxy compound (III), the reaction temperature ranging from 20° C. to 60° C., where R is amino replaced by amino protecting group. The preparation method of the present invention has a mild condition, a simple process, a low cost, and high efficiency; the product is easy to purify and the method is applicable to industrial production.

Abstract: Providing for improved write processes of a semiconductor memory are disclosed herein. By way of example, a programmable write assist can be provided that includes partially discharging a supply voltage applied to a memory cell. Partially discharging the supply voltage can improve write speeds to the memory cell, as well as improve reliability of the write process. A write assist circuit can cause the discharging in response to a resistance-modulated signal. Moreover, the resistance-modulated signal can be configured to control an amount or speed of the discharging of the supply voltage. Further, modulation control can be provided to mitigate discharging of the supply voltage beyond a target level, to reduce data loss in a target data cell or an adjacent data cell.

Abstract: A method for preparing a Rivaroxaban intermediate I is presented, including the following step: in a non-protonic solvent, under the effect of lewis acid, performing cyclization reaction on 4-(4-phenyl isocyanate)morpholine-3-ketone (II) and (S)-epoxy compound (III), the reaction temperature ranging from 20° C. to 60° C., where R is amino replaced by amino protecting group. The preparation method of the present invention has a mild condition, a simple process, a low cost, and high efficiency; the product is easy to purify and the method is applicable to industrial production.

Abstract: Disclosed is a new method for preparing a methyl substitute of a linezolid intermediate, (S)-2-(3-(3-fluoro-4-morpholinophenyl)-2-oxo-5-oxazoline) (I), wherein the intermediate (I) is obtained by the cyclization of 3-fluoro-4-morpholinophenyl isocyanate (II) and epoxy compound (III). This process has a short process route, low cost, easy operation, and high yield, so is suitable for a large-scale industrial production.

Abstract: Providing for improved write processes of a semiconductor memory are disclosed herein. By way of example, a programmable write assist can be provided that includes partially discharging a supply voltage applied to a memory cell. Partially discharging the supply voltage can improve write speeds to the memory cell, as well as improve reliability of the write process. A write assist circuit can cause the discharging in response to a resistance-modulated signal. Moreover, the resistance-modulated signal can be configured to control an amount or speed of the discharging of the supply voltage. Further, modulation control can be provided to mitigate discharging of the supply voltage beyond a target level, to reduce data loss in a target data cell or an adjacent data cell.

Abstract: A repair apparatus for a circuit board assembly includes a cooling device for a surface of the circuit board assembly opposite to the surface to be repaired. The cooling device defines a chamber for receiving the circuit board assembly. The circuit board assembly is disposed within the chamber to define a heat exchange space between the circuit board assembly and the bottom of the chamber. A method for repairing a circuit board assembly is also provided.

Abstract: An acoustic diode includes a phononic crystal medium, a nonlinear acoustic medium, a aluminum tubes contain the phononic crystal medium and the nonlinear acoustic medium. The phononic crystal medium is fabricated by alternately laminating a water layers and a glass layers in a periodic manner.