Abstract: A gas extraction device for metal mineral inclusions and a gas extraction method therefor are provided, the device includes a base plate, an annular carrier, sealing covers, a grinding assembly, a vacuum assembly, a gas-gathering assembly and a mass spectrometer. The annular carrier is disposed on the base plate, multiple grinding chambers are defined and evenly distributed in a circular shape on the annular carrier, the sealing covers are disposed at openings of the grinding chambers, the grinding assembly includes grinding hammers, and the grinding hammers penetrate through the sealing covers and extend into the grinding chambers. Side walls of each grinding chamber defines a first through hole and a second through hole. The vacuum assembly is communicated with the grinding chambers through the first through holes. The gas-gathering assembly is communicated with the grinding chambers through the second through holes. The mass spectrometer is communicated with the gas-gathering assembly.

Abstract: The disclosure discloses a method and device for monitoring partial discharge. The monitoring method including: step a, connecting a monitoring circuit in parallel to both ends of a tested product, disposing a ground wire between the monitoring circuit and ground, disposing a first sensor in the monitoring circuit, and disposing a ground wire sensor on the ground wire; step b, applying an excitation signal to the tested product, acquiring a first signal through the first sensor and acquiring a ground wire signal through the ground wire sensor within a monitoring cycle; and step c, determining whether the tested product has partial discharge through the first signal and the ground wire signal. The disclosure can avoid the partial discharge monitoring device from wrongly determining an interference signal to be a partial discharge signal, enhance anti-interference capability of the partial discharge monitoring device, and improve monitoring accuracy.

Abstract: A circuit for preventing false turn-on of a semiconductor switching device includes an active clamp circuit, a control circuit, a power amplifier circuit, and a suppression circuit. The control circuit is coupled to an input of the power amplifier circuit. An output of the power amplifier circuit is coupled to a gate of the semiconductor switching device. The active clamp circuit is configured to operate within a preset period when a voltage between the first end of the semiconductor switching device and a second end of the semiconductor switching device is greater than a preset voltage. The suppression circuit includes a controllable switch, which is configured to turn on after the operation of the active clamp circuit is completed, such that potential at the input of the power amplifier circuit is clamped to a fixed potential.

Abstract: The disclosure discloses a method and device for monitoring partial discharge. The monitoring method including: step a, connecting a monitoring circuit in parallel to both ends of a tested product, disposing a ground wire between the monitoring circuit and ground, disposing a first sensor in the monitoring circuit, and disposing a ground wire sensor on the ground wire; step b, applying an excitation signal to the tested product, acquiring a first signal through the first sensor and acquiring a ground wire signal through the ground wire sensor within a monitoring cycle; and step c, determining whether the tested product has partial discharge through the first signal and the ground wire signal. The disclosure can avoid the partial discharge monitoring device from wrongly determining an interference signal to be a partial discharge signal, enhance anti-interference capability of the partial discharge monitoring device, and improve monitoring accuracy.

Abstract: A circuit for preventing false turn-on of a semiconductor switching device includes an active clamp circuit, a control circuit, a power amplifier circuit, and a suppression circuit. The control circuit is coupled to an input of the power amplifier circuit. An output of the power amplifier circuit is coupled to a gate of the semiconductor switching device. The active clamp circuit is configured to operate within a preset period when a voltage between the first end of the semiconductor switching device and a second end of the semiconductor switching device is greater than a preset voltage. The suppression circuit includes a controllable switch, which is configured to turn on after the operation of the active clamp circuit is completed, such that potential at the input of the power amplifier circuit is clamped to a fixed potential.

Abstract: A system for driving power devices is provided, and the system includes a heat dissipation plate, semiconductor modules, gate plates, a control board, a bridge module, and a terminal module. The semiconductor modules are disposed on the heat dissipation plate. Each gate plate is disposed on the corresponding semiconductor module and includes first driving terminal. The control board is disposed on the heat dissipation plate. The bridge module and the terminal module are electrically connected to each other, disposed on the control board, and arranged sequentially in a direction from a center to an edge of the control board. The bridge module includes a plurality of driving bridge plates, and each driving bridge plate is electrically coupled to the control board. The terminal module includes a plurality of second driving terminals, and each second driving terminal is electrically connected to the corresponding driving bridge plate and first driving terminal.

Abstract: The present disclosure mainly provides a clamping circuit, coupled to a first end and a second end of a switching transistor through a first node and a second node, comprising: an RCD circuit, comprising a first resistor and a first capacitor connected in parallel between the second node and a third node, and a diode having a negative electrode coupled to the third node; and a first stabilivolt diode, having a negative electrode coupled to the first node and a positive electrode coupled to a positive electrode of the diode at a fourth node.

Abstract: The invention discloses a magnetic connector, which includes a male connector and a female connector. The female connector includes a tongue assembly. The tongue assembly includes a first tongue and a pluralities of contact terminals disposed on the first tongue. A second tongue is defined on the male connector. A plurality of conductive terminals are disposed on the second tongue, the male connector and the female connector are magnetically attracted, and the contact terminals contact with the conductive terminals to achieve electrical connection.

Abstract: The invention discloses a magnetic connector, which includes a male connector and a female connector. The female connector includes a tongue assembly. The tongue assembly includes a first tongue and a pluralities of contact terminals disposed on the first tongue. A second tongue is defined on the male connector. A plurality of conductive terminals are disposed on the second tongue, the male connector and the female connector are magnetically attracted, and the contact terminals contact with the conductive terminals to achieve electrical connection.

Abstract: Disclosed is a circuit breaker apparatus, including a first switching assembly, a first controller, a second switching assembly and a second controller. The first switching assembly is connected in series between a positive pole of a power supply and a load. The first switching assembly includes multiple first switching units in series. The first controller is electrically connected to a first pre-set reference potential of the first switching assembly. The first controller is electromagnetically coupled with each first switching unit through a first transformer unit. The second switching assembly is connected in series between a negative pole of the power supply and the load. The second switching assembly includes multiple second switching units in series. The second controller is electrically connected to a second pre-set reference potential of the second switching assembly. The second controller is electromagnetically coupled with each second switching unit through a second transformer unit.

Abstract: The present disclosure mainly provides a clamping circuit, coupled to a first end and a second end of a switching transistor through a first node and a second node, comprising: an RCD circuit, comprising a first resistor and a first capacitor connected in parallel between the second node and a third node, and a diode having a negative electrode coupled to the third node; and a first stabilivolt diode, having a negative electrode coupled to the first node and a positive electrode coupled to a positive electrode of the diode at a fourth node.

Abstract: Disclosed is a circuit breaker apparatus, including a first switching assembly, a first controller, a second switching assembly and a second controller. The first switching assembly is connected in series between a positive pole of a power supply and a load. The first switching assembly includes multiple first switching units in series. The first controller is electrically connected to a first pre-set reference potential of the first switching assembly. The first controller is electromagnetically coupled with each first switching unit through a first transformer unit. The second switching assembly is connected in series between a negative pole of the power supply and the load. The second switching assembly includes multiple second switching units in series. The second controller is electrically connected to a second pre-set reference potential of the second switching assembly. The second controller is electromagnetically coupled with each second switching unit through a second transformer unit.

Abstract: This invention is in the area of improved therapeutic combinations for and methods of treating selected cancers using selected pyrimidine compounds having pan-TAM or Mer/Axl dual receptor tyrosine kinase inhibitory activity in combination with immune checkpoint inhibitors. In one aspect, an improved treatment for select cancers is disclosed using selected pyrimidine compounds described herein in combination with an immune checkpoint inhibitor, for example, a cytotoxic T-lymphocyte-associated protein 4 (CTLA4) inhibitor, a programmed cell death protein 1 (PD1) inhibitor, or a programmed death-ligand 1 (PDL-1) inhibitor, or combination thereof.

Abstract: This invention is in the area of improved therapeutic combinations for and methods of treating selected cancers using selected pyrimidine compounds having pan-TAM or Mer/Axl dual receptor tyrosine kinase inhibitory activity in combination with immune checkpoint inhibitors. In one aspect, an improved treatment for select cancers is disclosed using selected pyrimidine compounds described herein in combination with an immune checkpoint inhibitor, for example, a cytotoxic T-lymphocyte-associated protein 4 (CTLA4) inhibitor, a programmed cell death protein 1 (PD1) inhibitor, or a programmed death-ligand 1 (PDL-1) inhibitor, or combination thereof.

Abstract: Described are compounds of Formula I or Formula II: wherein: ring A is a 5- or 6-membered heteroaryl group; dashed lines are optional double bonds; X is N or O; Y is a carbon atom or an S or N heteroatom in ring A in any suitable location; and substituents are as given herein. Compositions containing the same and methods of using the same in treating cancers such as acute lymphoblastic leukemia are also described.

Abstract: Methods and assays for detecting S-sulfhydration of amino acids in proteins, polypeptides and peptides are provided. The method is a two-step “tag-switch” method employing two reagents consecutively to specifically label, with a detectable label, persulfide (—S—SH) linkages in proteins, polypeptides and peptides.

Abstract: The present invention includes pyrimidine compounds that selectively inhibit Mer tyrosine kinase (MerTK) activity and/or Tyro3 tyrosine kinase activity, and use of these pyrimidine compounds as anti-cancer agents, immunostimulatory and immunomodulatory agents, anti-platelet agents, anti-infective agents, and as adjunctive agents in combination with chemotherapeutic, radiation or other standard of care for neoplasms.

Abstract: Methods and assays for detecting S-sulfhydration of amino acids in proteins, polypeptides and peptides are provided. The method is a two-step “tag-switch” method employing two reagents consecutively to specifically label, with a detectable label, persulfide (—S—SH) linkages in proteins, polypeptides and peptides.