Abstract: The present invention relates to a nucleic acid molecule capable of blocking motor protein, a library containing the nucleic acid molecule, a method for constructing the nucleic acid molecule or library containing the same, and an application of the nucleic acid molecule or library containing same.

Abstract: A compact high-speed electrical connector and electronic system thereof. The connecter comprises first, second, and third mating interfaces configured to receive one or more cards, and a mounting interface configured to mount to a substrate. The first, second, and third mating interfaces extend in columns parallel to each other and perpendicular to a mating direction. The first, second, and third mating interfaces offset from each other in a mating direction. The mounting interface extends in the mating direction. Such a configuration enables direction interconnections between three components that support hybrid functions such as high-speed signals, power, and/or side bands, while satisfying a limited space provided by an electronic system.

Abstract: Provided in the present disclosure is a method for sequencing a double-stranded target polynucleotide. The method can keep ATP at a relatively constant concentration during sequencing, so that the sequencing rate can be better kept stable and unchanged. Further provided in the present disclosure is a kit for sequencing a double-stranded target polynucleotide, the kit including a transmembrane pore in the membrane, a helicase, an ATP-generating enzyme and an ATP-generating substrate.

Abstract: Provided is helicase BCH1X, which comprises an amino acid sequence represented by SEQ ID NO: 1 or 2. Further provided are a complex structure comprising helicase BCH1X and a binding moiety used for binding to a polynucleotide, and a use thereof in the control and characterization of a polynucleotide and in single molecule nanopore sequencing.

Abstract: The present invention provides a helicase BCH2X, comprising an amino acid sequence represented by any one of SEQ ID NOs: 1-3. The present invention also provides a complex structure comprising the helicase BCH2X and a binding moiety for binding polynucleotides. The present invention also provides a use of the helicase BCH2X or the complex structure comprising same in the control and characterization of polynucleotides and single-molecule nanopore sequencing.

Abstract: Various techniques for implementing resistive temperature sensors that rely on the resistors' temperature sensitivity to provide temperature sensing are disclosed. Temperature sensitive resistors may be implemented in a resistor stack in combination with a resistor stack of resistors that are relatively temperature indifferent. Various temperature sensor circuits implementing these temperature sensitive resistors are also disclosed. A temperature sensor circuit may implement the temperature sensitive resistors along with the resistors that are relatively stable with temperature to output a voltage signal that is indicative of the temperature sensed by the circuit. In some instances, the signal from the temperature sensitive resistors is increased through the use of a feedback resistor loop.

Abstract: A multi-source domain adaptive electroencephalogram (EEG) emotional state classification method based on knowledge distillation are provided. First, data is obtained for band-pass filtering, and artifacts are removed by an independent component analysis technology. Second, EEG features are extracted by using a differential entropy method, and a three-dimensional EEG time series is converted into a two-dimensional sample matrix. Then, a training set and a test set are defined in two task scenarios, respectively. A pseudo-label triple loss based on marginal sampling is combined with a maximum mean discrepancy. Knowledge is learned from different source domains, so that a plurality of single-source models are utilized to the greatest extent, and a more powerful model is implemented with less time consumption. Finally, the classification accuracy is used to evaluate the performance of the model in the two task scenarios.

Abstract: A high-speed, high-performance cable connector is provided. The connector includes a housing having one or more slots configured for receiving an add-in card, and one or more subassemblies held by the housing. Each subassembly includes conductive elements held by a subassembly housing in a row. Each conductive element may include a mating end for contacting an add-in card and a tail end for a cable wire to be attached thereon. The conductive elements include first-type conductors for signals and second-type conductors for ground signals. Each first-type conductor may be shaped between a first segment comprising the mating end and a second segment comprising the tail end to receive a capacitor to couple the first and second segments. Techniques described herein can reduce crosstalks and insertion loss, and therefore improve signal integrity at high frequencies and enable transmitting high-speed signals to cables directly attached to connector conductive elements.

Abstract: An air filtering device for placement within an air duct for a residential furnace or air conditioning unit to provide at least MERV 13, preferably MERV 15, and most preferably MERV 17 efficiency. The air filtering device includes a frame which houses a filtering area having several stacked layers for removing particles from air before it is heated or cooled and then directed into air ducts for delivery throughout a building.

Abstract: A portable vacuum sealer, including a main body and a base; the main body includes a housing with an internal chamber, a vacuum pump provided in the internal chamber, and an airbag inserted into a bottom of the housing; a suction nozzle is provided on the airbag, and the vacuum pump is connected to the suction nozzle through a suction tube; the base is provided below the main body and detachably connected to the airbag by an engaging structure, in which the airbag shrinks to drive the base to move toward a bottom of the housing by the engaging structure when the vacuum pump is activated. Adopting the portable vacuum sealer, the airbag shrinks upwards to drive the base simultaneously to move upwards to abut the bottom of the main body when the vacuum pump is activated, which frees the consumer's hands, thereby significantly improving the packaging efficiency.

Abstract: An electrical connector connected with a cable connector connected to cables. The cable connector comprises a plurality of ground terminals, a plurality of signal terminals, and an electromagnetic shielding member. The electrical connector comprises a circuit board, a plurality of ground conductive pads, a plurality of signal conductive pads, and a shielding ground conductive pad. The circuit board comprises two electrical connecting areas that are parallel to each other along first direction. The plurality of ground conductive pads are disposed on a surface of the circuit board at intervals. At least one signal conductive pad is disposed between two adjacent ground conductive pads along second direction that is perpendicular to the first direction. Each of the signal conductive pads being directly connected with the corresponding signal terminal and not directly connected to the cables. The shielding ground conductive pad is disposed on the surface of the circuit board.

Abstract: Various techniques for implementing resistive temperature sensors that rely on the resistors' temperature sensitivity to provide temperature sensing are disclosed. Temperature sensitive resistors may be implemented in a resistor stack in combination with a resistor stack of resistors that are relatively temperature indifferent. Various temperature sensor circuits implementing these temperature sensitive resistors are also disclosed. A temperature sensor circuit may implement the temperature sensitive resistors along with the resistors that are relatively stable with temperature to output a voltage signal that is indicative of the temperature sensed by the circuit. In some instances, the signal from the temperature sensitive resistors is increased through the use of a feedback resistor loop.

Abstract: A cable connector includes a plurality of signal pair units that are disposed at intervals. Each signal pair unit includes two signal terminals that are disposed in parallel. A first end of each signal terminal is configured to be in electrical contact with a corresponding pin on a circuit board. A second end of each signal terminal is configured to electrically connect to a corresponding cable. A bent portion is formed on each signal terminal in an extension direction of the signal terminal, and there is a specific distance between the bent portion and the first end. In this way, an extension length of the bent portion may be increased to ensure a reliable electrical connection between the cable connector and the circuit board without occupying surface space of the circuit board for being in contact with a mating surface of the signal terminal.

Abstract: A card edge connector with a locking system, which may include a locking member integrally formed with a connector housing. The locking member may deflect upon insertion of an edge of a board into the connector and spring back to engage an opening in the board. The locking member and the opening in the board may have perimeters that are rounded, allowing relative rotation about an axis through the opening even though the board is locked within the connector. Such a configuration may provide a simple and secure locking system. Such a configuration may support connecting two parallel boards, each with a card edge connector, through a riser board with opposite ends inserted into the two connectors. Relative rotation of the board with respect to the connectors enables skew, in a direction parallel to the surfaces of the parallel boards, while securing each of those boards to the riser board.

Abstract: When a voltage phase of an ith-phase rectifier circuit of the three-phase rectifier circuit precedes a current phase of the ith-phase rectifier circuit by a first angle, the controller controls a switch of the ith-phase rectifier circuit to be turned on within a second angle after a voltage of the ith-phase rectifier circuit reaches a zero crossing point, where the second angle is greater than or equal to the first angle; and when the current phase of the ith-phase rectifier circuit of the three-phase rectifier circuit precedes the voltage phase of the ith-phase rectifier circuit by the first angle, the controller controls the switch of the ith-phase rectifier circuit to be turned on within a third angle before the voltage of the ith-phase rectifier circuit reaches the zero crossing point, where the third angle is greater than or equal to the first angle.

Abstract: A card edge connector for providing high-speed interconnections between different printed circuit boards. The card edge connector may include a plurality of wafers, each having a plurality of conductors. The conductors may include tails at one end and mating contact portions at an opposing end. The connector may have more rows of tails than columns of mating contact portions, so that the tails extend less distance from an edge of a PCB toward its center. The connector may be formed from multiple wafers of different sizes. Shorter wafers may have mating contact portions in columns and tails in rows. Taller wafers may have mating contact portions in the same column as a respective shorter wafer and tails in a row parallel to and offset from the row of tails of the respective shorter wafer.

Abstract: A compact card edge connector for providing high-speed interconnections between different components. The card edge connector includes a mating interface configured to receive a card, a second interface configured to mount to a printed circuit board, and a fourth interface configured to mate with a cable component. The mating interface is perpendicular to the second interface and parallel to the fourth interface. For each column of mating ends at the mating interface, the connector includes two rows mounting ends at the second interface and one column of mounting ends at the fourth interface.

Abstract: A card edge connector for providing high-quality, high-speed interconnections between different printed circuit boards. The card edge connector includes a front housing holding a subassembly and providing a mating interface for the connector. The subassembly includes conductors held by a subassembly housing, and a subassembly shield on a side of the subassembly housing. A mating interface shield is coupled to the subassembly shield and extends beyond the subassembly shield into a wall of the front housing. The subassembly shield and mating interface shield may be coupled through compliant members such as spring fingers. The subassembly shield and mating interface shield may be in parallel planes with the mating interface shield offset away from the conductors though still electrically connected through the compliant members.

Abstract: A configurable electrical connector. The electrical connector includes conductors held by a housing. Contact tails of the conductors extend from a mounting face of the housing therethrough. The mounting face of the housing includes a slot. In some embodiments, the slot exposes portions of ground conductors of the connector and receives a member coupled with the exposed portions of the ground conductors such that the electrical connector can meet high performance requirements. The member may be inserted into or molded in the slot. In some embodiments, the slot may or may not receive a member that is insulative when the electrical connector does not need to meet the high performance requirements. Such a configuration enables the same connector to be compatible with multiple performance protocols.