Abstract: A substrate is coated with a multi-layer coating, comprising in order: (i) a first functional layer comprising ta-C, (ii) a second functional layer comprising ta-C, (iii) (a) a third functional layer comprising ta-C and a first intermediate layer comprising a carbide of a first element, or (b) a first intermediate layer comprising a carbide of a first element, and a second intermediate layer comprising the first element, wherein the ta-C has a hydrogen content less than 10% and an sp2 content less than 30%; wherein (i) the Young's modulus or (ii) the hardness or (iii) both the Young's modulus and the hardness independently stay the same or increase from layer to layer in (iii) (a) from the first intermediate layer to the first functional layer, or in (iii) (b) from the second intermediate layer to the first functional layer.

Abstract: An intraluminal stent (1) and a preparation method therefor are provided. The intraluminal stent (1) includes at least one sub-stent. The sub-stent includes at least a first wire (4) extending along a first spiral direction and at least a second wire (5) extending along a second spiral direction, and the first wire (4) and the second wire (5) extend in different directions to form several wire intersection points. The intraluminal stent (1) has several wrapped portions (2) to wrap two corresponding wire tail ends. A wrapping connector (3) is disposed at a periphery of the wrapped portion (2). Two end portions of the wrapping connector (3) are firmly connected to regions corresponding to two ends of the wrapped portion (2). The two wire tail ends of the wrapped portions (2) are wrapped by using the wrapping connector (3). The stent (1) is less harmful to intraluminal tissues and a relatively strong tensile resistance.

Abstract: A medical connecting device, having a proximal end and a distal end; the medical connecting device includes an insulating layer (3, 123, 222, 322) and a spiral tube (2, 124, 223, 323), the insulating layer (3, 123, 222, 322) covering the outermost layer of the whole device; the spiral tube (2, 124, 223, 323) has a conductive hollow tubular structure; and the spiral tube (2, 124, 223, 323) has a spiral structure, and a pitch of the spiral structure gradually changes in the direction from the proximal end to the distal end. The medical connecting device is able to integrate multiple functions such as electricity conducting, liquid passage, powder spraying, negative pressure suction, sealing, insulation, and support.

Abstract: Embodiments of the present disclosure provide a circuit, touch chip, and electronic device for capacitance detection, the circuit for capacitance detection comprising: a control module, a charge transfer module, a processing module, a driving module, and an offsetting module, the control module being configured to charge a detection capacitor by controlling the driving module, the offsetting module being configured to charge an offset capacitor, and control the offset capacitor to perform charge offsetting on the detection capacitor; the charge transfer module being configured to convert charge of the detection capacitor after the charge offsetting to generate an output voltage; and the processing module being configured to determine, based on the output voltage, a capacitance variation of the detection capacitor before and after the detection capacitor is affected by an external electric field.

Abstract: Dual-channel injection bipolar high frequency electrosurgical knife comprises an electrode part, a main part and an operation part. The electrode part comprises an active electrode, an insulating part and an inert electrode. The active electrode has a hollow tubular portion, which can cut the target lesion tissue when power on. The main part comprises a protective tube, an insulation sheath and an insulation coated screw, connector, seal. The insulation coated screw includes a conductive screw and an insulating coating on the surface. The operation part comprises a positioning structure, a slider, a core rod, a connection sheath, an infusion tube and a connection cable. 6% Luer tapers are attached to both the positioning structure and the infusion tube. Liquid can flow out from the dual-channel, a solution can be injected in submucosal layer to elevate the mucous membrane tissue or clean hemorrhage site.

Abstract: Provided is a multifunctional high-frequency electric knife, comprising processing portion, sheath portion, and operating portion. The processing portion is provided with an electrode and a clip component; the electrode is provided with a hollow tubular portion; the electrode can be pushed out or retracted relative to far end of the sheath portion; the clip component can be pushed out or retracted relative to far end of the sheath portion; the sheath portion is disposed at near end of the processing portion and comprises a hollow pull rod and a spring tube; and the operating part is located at near end of the sheath portion and comprises a high-frequency joint connected to the electrode by wire, a component driving, by operating line, the electrode to move, a member driving the hollow pull rod to move, and a liquid inlet allowing liquid to flow to the hollow tubular portion of the electrode.

Abstract: The present disclosure discloses a circuit, touch chip, and electronic device for capacitance detection. The circuit for capacitance detection comprises: a control module (112), a charge transfer module (142), a processing module (152), a driving module (122), and an offsetting module (132), the control module (112) being configured to charge a detection capacitor (Cx) by controlling the driving module (122), the offsetting module (132) being configured to charge an offset capacitor (Cc), and control the offset capacitor (Cc) to perform charge offsetting on the detection capacitor (Cx); the charge transfer module (142) being configured to convert charge of the detection capacitor after the charge offsetting to generate an output voltage (VOUT); and the processing module (152) being configured to determine, based on the output voltage (VOUT), a capacitance variation of the detection capacitor (Cx) before and after the detection capacitor is affected by an external electric field.

Abstract: An anastomosis clamp (1) and a delivery system thereof, where the anastomosis clamp (1) includes inner lancets (102, 602), round corners (103, 603), and outer rings (101, 601) that are sequentially connected; the delivery system may be used in cooperation with the anastomosis clamp (1); and the delivery system includes a distal end (2), a middle flexible sheath (3), and a handle (4).

Abstract: Some embodiments of the present disclosure provide a positive and negative voltage driving circuit. The positive and negative voltage driving circuit includes: a positive and negative voltage generating module and a control module. The positive and negative voltage generating module includes a switch module. The control module is configured to control a turn-off state and a turn-on state of the switch module to enable the positive and negative voltage generating module to output a positive voltage and a negative voltage to a stylus tip of an active stylus. The positive and negative voltage driving circuit of the embodiments of the present disclosure can significantly reduce the driving power consumption of the active stylus while ensuring driving effects.

Abstract: A circuit and method for capacitance detection, a touch chip, and an electronic device are provided. The circuit includes a control module, a driving module, an offsetting module, and a charge transfer module, the driving module being configured to positively charge a capacitor to be detected through a first charging branch circuit, or negatively charge the capacitor to be detected through a second charging branch circuit under the control of the control module; the offsetting module being configured to offset base capacitance of the capacitor to be detected through a first offsetting branch circuit under the control of the control module, or offset the base capacitance of the capacitor to be detected through a second offsetting branch circuit under the control of the control module; the charge transfer module being configured to transfer a charge on the capacitor to be detected to generate an output voltage.

Abstract: A hydraulic support unit and a hydraulic support for anti-rock burst roadway. The hydraulic support unit includes a base, a top beam, and a hydraulic support column, the top beam is positioned above the base in a spaced manner; the hydraulic support column are disposed between the base and the top beam; a side guard plate and a first base hydraulic cylinder are disposed on the left side and right side of the base, the side guard plates are rotably connected to the base, the two ends of the first base hydraulic cylinder are hinged to the base and the side guard plate respectively, the first base hydraulic cylinder can drive the side guard plate to transit between a horizontal state and a vertical state, and the bottom surfaces of the side guard plates are flush with the bottom surface of the base in the horizontal state.

Abstract: The present disclosure discloses a circuit, touch chip, and electronic device for capacitance detection. The circuit for capacitance detection comprises: a control module (112), a charge transfer module (142), a processing module (152), a driving module (122), and an offsetting module (132), the control module (112) being configured to charge a detection capacitor (Cx) by controlling the driving module (122), the offsetting module (132) being configured to charge an offset capacitor (Cc), and control the offset capacitor (Cc) to perform charge offsetting on the detection capacitor (Cx); the charge transfer module (142) being configured to convert charge of the detection capacitor after the charge offsetting to generate an output voltage (VOUT); and the processing module (152) being configured to determine, based on the output voltage (VOUT), a capacitance variation of the detection capacitor (Cx) before and after the detection capacitor is affected by an external electric field.

Abstract: Embodiments of the present disclosure provide a circuit, touch chip, and electronic device for capacitance detection, the circuit for capacitance detection comprising: a control module, a charge transfer module, a processing module, a driving module, and an offsetting module, the control module being configured to charge a detection capacitor by controlling the driving module, the offsetting module being configured to charge an offset capacitor, and control the offset capacitor to perform charge offsetting on the detection capacitor; the charge transfer module being configured to convert charge of the detection capacitor after the charge offsetting to generate an output voltage; and the processing module being configured to determine, based on the output voltage, a capacitance variation of the detection capacitor before and after the detection capacitor is affected by an external electric field.

Abstract: New aluminum alloys having iron and one or more rare earth elements are disclosed. The new alloys may include from 1 to 15 wt. % Fe and from 1 to 20 wt. % of the rare earth element(s), the balance aluminum and any optional incidental elements and impurities. The new aluminum alloys may be produced via additive manufacturing techniques.

Abstract: The present disclosure relates to various embodiments of aluminum alloy products having fine eutectic-type structures and methods for making the same. The method for producing an aluminum alloy product having a fine eutectic-type structure comprising selectively heating at least a portion of an additive manufacturing feedstock to a temperature above a liquidus temperature of the additive manufacturing feedstock, thereby forming a molten pool; and cooling the molten pool, thereby forming a solidified mass.

Abstract: Disclosed is a bipolar high-frequency electric knife, including a cutter portion, a main body part and an operation portion. The cutter portion includes a first electrode portion, a second electrode portion and an insulation member. The main body part includes a position-limiting part and an insulation sheath. The operation portion includes a handle, a button, a socket, a first wire and a second wire.

Abstract: Disclosed is a method for positioning a target in a three-dimensional CT image and a CT system for security inspection. The method includes: displaying a three-dimensional CT image; receiving a selection by a user of at least one area of the three-dimensional CT image at a viewing angle; generating at least one set of three-dimensional objects in a depth direction based on the selection; and determining a target object from the set. With the above technical solutions, the user may be facilitated in marking a suspected object in a CT image in a quick manner.

Abstract: A method and system for key knowledge point recommendation are provided, the method comprising calculating knowledge point relationship strengths of knowledge points in a set of knowledge points; calculating weights for knowledge points according to the knowledge point relationship strengths of knowledge points in the set of knowledge points, and storing the knowledge points and weights correspondingly; determining key knowledge points according to the weights of the knowledge points and recommending the key knowledge points to a user.

Abstract: The present invention provides a semantic information acquisition method and system, and corresponding keyword expansion and search methods and systems, comprising: searching for, then classifying an article; then, performing word segmentation according to the classified article to obtain the words in said category, and setting said category and words to serve as the semantic information of the keyword; also, a method and system using the semantic information acquisition method to expand a keyword, and a method and system using keyword expansion to perform a search. The described semantic information acquisition method effectively avoids the technical problems in the prior art of only being able to obtain semantic information of English vocabulary; and it also being impossible to classify semantic information based on category information. The invention is particularly suitable for searching using a keyword, searching a large number of texts, and organizing large amounts of related data and information.

Abstract: A method and system for obtaining a knowledge point implicit relationship are provided; first, establishing a knowledge point explicit relationship map according to knowledge point explicit relationship strengths; second, computing according to said knowledge point explicit relationship map a simple path set of two knowledge points; then, computing the implicit relationship strength values corresponding to each simple path in said simple path set; further, comparing the relationship strength values of the simple paths and setting as the significant implicit relationship strength value the simple path relationship strength having the largest value also greater than a preset threshold value.