Abstract: The present disclosure relates to an in vivo duct repair device and an operating method thereof. The in vivo duct repair device includes a catheter; a nozzle assembly, two axial ends thereof including a supplying end and a spraying end, respectively, the nozzle assembly having a first material flow channel arranged inside the nozzle assembly, a first material spout communicated with the first material flow channel and spraying a first material radially outwards, a second material flow channel arranged inside the nozzle assembly and isolated from the first material flow channel and a second material spout communicated with the second material flow channel and spraying a second material radially outwards, and the nozzle assembly being configured to enter the catheter and extend the spraying end out of an introducing end of the catheter; and a drive device connected to the supplying end.

Abstract: The present disclosure provides a bioprinter nozzle, a bioprinter and a lumen tissue construct printing method. The bioprinter nozzle includes: a bio-ink flow channel disposed inside the bioprinter nozzle; a bio-ink ejection port in communication with the bio-ink flow channel and located on the lateral side of an ejection end of the bioprinter nozzle; a medical adhesive flow channel disposed inside the bioprinter nozzle and isolated from the bio-ink flow channel; and a medical adhesive ejection port in communication with the medical adhesive flow channel and disposed on the lateral side of the ejection end, the medical adhesive ejection port and the bio-ink ejection port being arranged in a staggered manner in the axial direction of the bioprinter nozzle. The bioprinter includes the bioprinter nozzle. The lumen tissue construct printing method uses the bioprinter for printing.

Abstract: This disclosure provides agents and methods for treating a traumatic brain injury (TBI) with Annexin A5 or variant thereof.

Abstract: The present disclosure relates to a device for printing a lumen tissue construct, a method for using the same, and a 3D bioprinter. The device includes a spray head assembly for printing a biological construct; and a bioprinting platform for supporting a lumen tissue, and for carrying a biological construct printed by the spray head assembly, and for applying the biological construct to an inner surface of the lumen tissue. The device for printing a lumen tissue construct of the present disclosure provides the spray head assembly and the bioprinting platform, and the spray head assembly applies the biological construct onto the inner surface of the lumen tissue by the bioprinting platform, to avoid such problems as recurrence of thrombus and restenosis of a lumen after the lumen tissue has been implanted for a long time, thereby improving the biological reliability of the lumen tissue.

Abstract: The present disclosure relates to a manufacturing method of a lumen tissue construct. The manufacturing method of a lumen tissue construct comprises: step 1: installing elastic film on a support in a sleeving manner; step 3: printing a biological construct on the elastic film; step 5: forming a construct bonding layer on the biological construct; and step 7: bonding a lumen tissue to the construct bonding layer. In the manufacturing method of the lumen tissue construct of the present disclosure, the printed biological construct is assembled on the inner surface of the lumen tissue to form the lumen tissue construct, thereby helping to avoid occurrence of problems such as recurrence of thrombus, restenosis of lumen and the like after the lumen tissue construct is implanted for a long time, and improving the biological reliability of the lumen tissue construct.

Abstract: A device and method for printing lumen tissue constructs and a 3D bioprinter are disclosed. The device has a spray sprayhead assembly and a bioprinting platform. The spray sprayhead assembly prints a biological construct on an inner surface of a lumen tissue by the bioprinting platform. Problems, such as, recurrence of thrombus and restenosis of a lumen after the lumen tissue has been transplanted for a long time, can be avoided. The biological reliability of the lumen tissue can be improved.

Abstract: A device and method for printing lumen tissue constructs and a 3D bioprinter are disclosed. The device has a spray sprayhead assembly and a bioprinting platform. The spray sprayhead assembly prints a biological construct on an inner surface of a lumen tissue by the bioprinting platform. Problems, such as, recurrence of thrombus and restenosis of a lumen after the lumen tissue has been transplanted for a long time, can be avoided. The biological reliability of the lumen tissue can be improved.

Abstract: A stand-alone sensor includes a main part, a sensing head mounting on the main part, and a movable shield retractably disposed in the main part. The movable shield is rotatable around the sensing head when protruded from the main part.

Abstract: In accordance with the principles of the present invention, systems and methods for trading and clearing term interest rate financial instruments that lead to the discovery of spot term interbank interest rate is provided. Multiple exchange-traded financial instrument (e.g., financial derivatives) are proposed that eliminate dependency on published rates that are based on hypothetical borrowing rates or expert judgments. Trade information from these new financial instruments can be used to estimate term unsecured interest rates that are robust and accurately reflect the cost of borrowing in the unsecured markets. This new rate can be used to price various other financial instruments and be a replacement for LIBOR.

Abstract: A balun structure is provided. The balun structure includes a substrate, a first coil structure and a second coil structure having a spiral shape and on the substrate. The first coil structure includes a first single-layer coil surrounding by first laminated coils that are connected to the first single-layer coil. The second coil structure can include a second single-layer coil and second laminated coils that are connected to the second single-layer coil. A projection of the first single-layer coil and a projection of the second single-layer coil on a surface of the substrate overlap with each other. A number of the second laminated coils is larger than or equal to a number of the first laminated coils. The second laminated coils are arranged alternately with the first laminated coils or the first single-layer coil in a plane parallel to the surface of the substrate.

Abstract: The present disclosure relates to a device for printing lumen tissue construct, a method for using the same and 3D bioprinter. Wherein, the device includes a spray head assembly for printing a biological construct; and a bioprinting platform for supporting a lumen tissue, and for carrying a biological construct printed by the spray head assembly, and for applying the biological construct to an inner surface of the lumen tissue. The device for printing lumen tissue construct of the present disclosure provides the spray head assembly and the bioprinting platform, and the spray head assembly applies the biological construct onto the inner surface of the lumen tissue by the bioprinting platform, to avoid such problems as recurrence of thrombus and restenosis of a lumen after the lumen tissue has been implanted for a long time, thereby improving the biological reliability of the lumen tissue.

Abstract: The present invention relates to a device for printing lumen tissue construct, a method for using the same and a 3D bioprinter. Wherein, the device comprises a spray sprayhead assembly and a bioprinting platform, the spray sprayhead assembly prints a biological construct on an inner surface of a lumen tissue by the bioprinting platform. the device for printing lumen tissue construct of the present invention provides the sprayhead assembly and the bioprinting platform, and the sprayhead assembly prints the biological construct on the inner surface of the lumen tissue by the bioprinting platform, thus avoid such problems as recurrence of thrombus and restenosis of a lumen after the lumen tissue has been transplanted for a long time, thereby improving the biological reliability of the lumen tissue.

Abstract: A stand-alone sensor includes a main part, a sensing head mounting on the main part, and a movable shield retractably disposed in the main part. The movable shield is rotatable around the sensing head when protruded from the main part.

Abstract: Embodiments of the present invention disclose a push information pre-selecting method and apparatus. The method includes: based on historical push data of push information including a plurality of push information items, determining a feature for calculating a predicted value, and a weight corresponding to the feature; calculating a standard deviation of the feature; determining a fluctuation probability of the standard deviation; calculating the predicted value based on the weight, the standard deviation, and the fluctuation probability, the standard deviation and the fluctuation probability being used for calculating a fluctuation value for correcting the weight; based on the predicted value, selecting push information items satisfying a preset condition; and pushing the selected push information items to a target user.

Abstract: A balun structure is provided. The balun structure includes a substrate, a first coil structure and a second coil structure having a spiral shape and on the substrate. The first coil structure includes a first single-layer coil surrounding by first laminated coils that are connected to the first single-layer coil. The second coil structure can include a second single-layer coil and second laminated coils that are connected to the second single-layer coil. A projection of the first single-layer coil and a projection of the second single-layer coil on a surface of the substrate overlap with each other. A number of the second laminated coils is larger than or equal to a number of the first laminated coils. The second laminated coils are arranged alternately with the first laminated coils or the first single-layer coil in a plane parallel to the surface of the substrate.

Abstract: A multi-power supply system and a control method thereof are disclosed. The multi-power supply system includes a first power-supply unit, a second power-supply unit, a switching unit, and a control unit. The power-supply unit comprises a reverse current prevention circuit, a converter circuit, and an input circuit. The switching unit is electrically coupled to the first power-supply unit and the second power-supply unit. When the first and second input circuits are in normal operation, the control unit controls the switching unit to be turned off to allow the first power-supply unit and the second power-supply unit to supply power to a load. When one of the first and second input circuits is in abnormal operation, the control unit controls the switching unit to be turned on. The switching unit cooperates with the first and second reverse current prevention circuits to achieve the switching of input.

Abstract: A resonant converter apparatus includes a first pre-regulator, a first resonant converter, a second pre-regulator, a second resonant converter and a controller. The first pre-regulator receives a first input voltage and generates a first output voltage. The first resonant converter receives the first output voltage and generates a supply voltage. The second pre-regulator receives a second input voltage and generates a second output voltage. The second resonant converter receives the second output voltage and generates the supply voltage, in which an output of the second resonant converter is electrically connected in parallel with an output of the first resonant converter. The controller controls the first pre-regulator and the second pre-regulator such that the first resonant converter and the second resonant converter generate identical output currents in accordance with controlled operations of the first pre-regulator and the second pre-regulator.

Abstract: A cooling device includes a cooler. The cooler includes a base, a plurality of cooling fins secured to the base, and a heat pipe inserting through the cooling fins. Each cooling fin includes a fin body and a pressed portion extending from the fin body. The fin body includes a hole area, which defines a receiving hole. A portion of the heat pipe extends through the receiving hole; the pressed portion includes at least one guiding portion, which is configured to guide air to flow towards the hole area from the fin body.

Abstract: One aspect of the present invention, a strip type off-circuit tap changer includes an insulating rod and a support, where an operation positioning device is arranged on the support, a rack mobile frame is disposed on the insulating rod, the rack of the rack mobile frame is engaged to a drive gear of the operation positioning device, columnar fixed contacts are longitudinally arranged at a spacing on the insulating rod, the rack mobile frame is connected to a moving contact frame, and a moving contact assembly is arranged on the moving contact frame and fits with the fixed contacts on the insulating rod, the moving contact assembly is formed by an annular moving contact and an elastic pin, and the annular moving contact spans between two adjacent columnar fixed contacts.