Abstract: The invention discloses a swinging brake of electric nail gun for restraining a striker to return to a standard position after shooting the nail. The swinging brake is elastically pivoted on a swing seat of a gun frame, and is extended to form a braking end. The braking end can butt a stopping part on the gun frame when a power flywheel driven by the swing seat is at an idle position, so as to restrain the striker that has returned to the standard position. The braking end can also be driven by the swing seat to leave the stopping part when the power flywheel swings to a transmission position, so that the striker can be released from the standard position to slide along the nailing axial direction to shoot the nail. In this way, the striker in an electric nail gun configured with a swinging power flywheel is improved to accurately return to the standard position after nailing.

Abstract: An application program startup method and an electronic device are provided. The method includes: acquiring an application display instruction, wherein the application display instruction is an instruction generated in responsive to activation of an application selection entry by an external object; controlling, according to the application display instruction, a display apparatus of an electronic device to display one or more application icons; acquiring an application selection instruction, wherein the application selection instruction indicates that a corresponding application icon is selected; and in a case where identity verification is passed, executing an unlocking operation and starting an application program corresponding to the selected application icon.

Abstract: Provided is a method of in vitro generating functional hPSC-islets, comprising a step of generating pancreatic endocrine progenitors from pancreatic progenitors by using a medium supplemented with ISX9 or a combination of ISX9 and Wnt-C59. Also provided are media used in the method, a population of cells including functional hPSC-islets generated by the method and uses thereof.

Abstract: A photographing method, device and system, and a non-transitory computer-readable storage medium are disclosed. The photographing method may include: sending a first image or a feature thereof to a cloud server, where the first image is acquired through a built-in camera of the mobile terminal (100); and receiving a third image from a cloud server, which is determined by the cloud server, in response to meeting a first preset condition based on a second image captured by a camera arranged on-site, and performing detail enhancement on the first image according to the third image which meets the first preset condition, where the first preset condition includes: a capture time interval between the third image and the first image being less than or equal to a preset time interval, and the third image being able to be utilized to enhance the first image partly or entirely (101).

Abstract: The invention disclosed a method for conducting site-directed modification to a plant genome using non-inheritable materials. The method provided in the present invention specifically comprises the following steps: introducing a non-inheritable material into a cell or a tissue or a part of the plant of interest; wherein said non-inheritable material is a nuclease specific to said target fragment or an mRNA expressing said nuclease, thereby the target fragment is cleaved by said nuclease and site-directed modification to the target fragment is achieved through DNA repairing in the plant. By introducing a non-inheritable material of sequence-specific nuclease, site-directed mutation in a plant gene can be achieved, and no exogenous gene or nucleic acid fragments will be integrated into the plant as obtained. Therefore, the present invention can lead to more precise genome function study and higher biosafety in breeding.

Abstract: A nail drive method applied in an electric nail gun, in which a rotary actuator is driven to generate forward rotational kinetic energy for nailing. The rotary actuator has paired wire bundles and magnetic lines arranged in circumferential directions. The nail drive method comprises boosting a pre-loaded voltage of a battery to generate a peak voltage, and storing the electric charge generated by the peak voltage, and then releasing the peak voltage and its electric charge to the rotary actuator through a nailing signal, so that the wire bundles can generate a current to interact with the magnetic lines to generate a tangential force, so that the magnetic lines can drive the rotor to rotate for a specific angle, and the rotary actuator can directly generate a forward rotational kinetic energy for nailing. Thus, the energy conversion structure installed in the conventional electric nail gun can be omitted.

Abstract: A nail drive device of electric nail gun includes a nailing rod and a rotary actuator that can output a specific rotation angle and can drive the nailing rod to move downward for nailing. Specifically, the rotary actuator includes a stator and a rotor surrounding it, between the stator and the rotor, even groups of electro-magnetic mutual action components are configured in pairs, to generate a tangential force to drive the rotor to rotate for a specific rotation angle, and to drive the nailing rod to move for a nailing stroke. The nailing stroke can be determined by the specific rotation angle. Thus, through the above configuration of the rotary actuator, the structure of the electric nail gun can be simplified.

Abstract: A nail drive method applied in an electric nail gun, in which a rotary actuator is driven to generate forward rotational kinetic energy for nailing. The rotary actuator has paired wire bundles and magnetic lines arranged in circumferential directions. The nail drive method comprises boosting a pre-loaded voltage of a battery to generate a peak voltage, and storing the electric charge generated by the peak voltage, and then releasing the peak voltage and its electric charge to the rotary actuator through a nailing signal, so that the wire bundles can generate a current to interact with the magnetic lines to generate a tangential force, so that the magnetic lines can drive the rotor to rotate for a specific angle, and the rotary actuator can directly generate a forward rotational kinetic energy for nailing. Thus, the energy conversion structure installed in the conventional electric nail gun can be omitted.

Abstract: A nail drive device of electric nail gun includes a nailing rod and a rotary actuator that can output a specific rotation angle and can drive the nailing rod to move downward for nailing. Specifically, the rotary actuator includes a stator and a rotor surrounding it, between the stator and the rotor, even groups of electro-magnetic mutual action components are configured in pairs, to generate a tangential force to drive the rotor to rotate for a specific rotation angle, and to drive the nailing rod to move for a nailing stroke. The nailing stroke can be determined by the specific rotation angle. Thus, through the above configuration of the rotary actuator, the structure of the electric nail gun can be simplified.

Abstract: An air-path structure of pneumatic a nail gun, formed inside a gun body containing high-pressure air, comprises a main air chamber, a firing valve air chamber and a time-delayed air chamber that continuously releases the high-pressure air to the atmosphere. The gun body is configured with a trigger valve and a slider valve. The inside of the trigger valve is formed with a safety-on air chamber and a safety-off air chamber. The trigger valve controls the high-pressure air inside the firing valve air chamber to be discharged to the atmosphere. The slider valve controls the high-pressure air inside the main air chamber flowing toward the firing valve air chamber, the time-delayed air chamber and the safety-off air chamber. Specifically, the safety-on air chamber is constantly communicated with the main air chamber and constantly contains high-pressure air, and the slider valve can control the high-pressure air inside the safety-off air chamber flowing into the time-delayed air chamber.

Abstract: A photographing method, device and system, and a non-transitory computer-readable storage medium are disclosed. The photographing method may include: sending a first image or a feature thereof to a cloud server, where the first image is acquired through a built-in camera of the mobile terminal (100); and receiving a third image from a cloud server, which is determined by the cloud server, in response to meeting a first preset condition based on a second image captured by a camera arranged on-site, and performing detail enhancement on the first image according to the third image which meets the first preset condition, where the first preset condition includes: a capture time interval between the third image and the first image being less than or equal to a preset time interval, and the third image being able to be utilized to enhance the first image partly or entirely (101).

Abstract: SUSD2 protein is used as a marker in identification, selection or separation of pancreatic internal secretion precursor cells and/or newborn pancreatic internal secretion cells; and a use of an mRNA, for encoding the SUSD2 protein, of a precursor protein as the marker in identification of the pancreatic internal secretion precursor cells and/or the newborn pancreatic internal secretion cells. Analysis of gene expression of pancreatic endoderm cells sourced by induced directional differentiation of human pluripotent stem cells finds the enrichment expression of a SUSD2 gene in the pancreatic internal secretion precursor cells and the newborn pancreatic internal secretion cells. A protein encoded by the SUSD2 gene is a receptor protein on cell membranes. Using the protein as the marker, the identification, the selection or the separation of the pancreatic internal secretion precursor cells and the newborn pancreatic internal secretion cells can be conducted.

Abstract: A switch device including a switch circuit and switch controller. The switch circuit comprises first and second switches to selectively enable a path between an input terminal and an output terminal. The switch controller refers to a selection signal and a switch signal to respectively generate a first switch control signal at a first switch control signal output terminal and a second switch control signal at a second switch control signal output terminal. When the voltage level of an input signal at the input terminal is larger than a power voltage, the switch controller generates the first switch control signal and the second switch control signal capable of turning off the switch circuit. When the voltage level of the input signal is not larger than the power voltage, the switch controller generates the first switch control signal and the second switch control signal according to the switch signal.

Abstract: A switch device including a switch circuit and switch controller. The switch circuit comprises first and second switches to selectively enable a path between an input terminal and an output terminal. The switch controller refers to a selection signal and a switch signal to respectively generate a first switch control signal at a first switch control signal output terminal and a second switch control signal at a second switch control signal output terminal. When the voltage level of an input signal at the input terminal is larger than a power voltage, the switch controller generates the first switch control signal and the second switch control signal capable of turning off the switch circuit. When the voltage level of the input signal is not larger than the power voltage, the switch controller generates the first switch control signal and the second switch control signal according to the switch signal.

Abstract: The present disclosure provides a cable connector assembly with a wire spacing component, the cable connector assembly comprises a cable connector main body and a locking device sheathing on a periphery of the cable connector main body. The cable connector main body has: a shielding shell; an insulating body received in the shielding shell; a plurality of conductive terminals, the conductive terminals are fixed to the insulating body and have a plurality of soldering tails extending backwardly out from insulating body; a cable, naked ends of a plurality of conductive wires of the cable are correspondingly soldered to the soldering tails; and a wire spacing component, the wire spacing component is provided with a plurality of receiving grooves, the receiving grooves each receive the soldering tail and the naked end of the conductive wire soldered to the soldering tail.

Abstract: The present invention provides a hydrobromide of methyl 3-[(4s)-8-bromo-1-methyl-6-(2-pyridyl)-4H-imidazol[1,2-a][1,4]benzodiazepine-4-yl] propionate and its related crystal forms, preparation method and use thereof. The hydrobromide has excellent solubility (>100 mg/ml), which is significantly superior to other currently commercially available or developed salt products, and is especially suitable for the preparation of injections, has relatively good stability in various crystal forms, and has good practical value and market prospects.

Abstract: A method of preparing a crystalline copper-based coordination polymer comprises preparing a mixture of copper ions and a first quaternized carboxylate pyridyl ligand; adding a second polypyridyl ligand; and forming crystals of a copper-based coordination polymer therefrom. The crystalline copper-based coordination polymer is suitable for providing a sensing platform for detecting the presence of one or more target nucleic acid sequences such as viral RNA, in particular Dengue virus and/or Zika virus RNA with high selectivity and high specificity. A method of detecting at least a first target nucleic acid sequence, in particular from a viral RNA, in particular it is Flavivirus RNA, in a sample is also provided. Further provided is a kit including the crystalline copper-based coordination polymer and an oligonucleotide probe.

Abstract: The present invention provides a hydrobromide of methyl 3-[(4s)-8-bromo-1-methyl-6-(2-pyridyl)-4H-imidazol[1,2-a][1,4]benzodiazepine-4-yl] propionate and its related crystal forms, preparation method and use thereof. The hydrobromide has excellent solubility (>100 mg/ml), which is significantly superior to other currently commercially available or developed salt products, and is especially suitable for the preparation of injections, has relatively good stability in various crystal forms, and has good practical value and market prospects.

Abstract: A method of preparing a crystalline copper-based coordination polymer comprises preparing a mixture of copper ions and a first quaternized carboxylate pyridyl ligand; adding a second polypyridyl ligand; and forming crystals of a copper-based coordination polymer therefrom. The crystalline copper-based coordination polymer is suitable for providing a sensing platform for detecting the presence of one or more target nucleic acid sequences such as viral RNA, in particular Dengue virus and/or Zika virus RNA with high selectivity and high specificity. A method of detecting at least a first target nucleic acid sequence, in particular from a viral RNA, in particular it is Flavivirus RNA, in a sample is also provided. Further provided is a kit including the crystalline copper-based coordination polymer and an oligonucleotide probe.

Abstract: A pneumatic nail gun operated in automatic actuation mode includes a gun body, a trigger valve, and a shuttle valve. The gun body defines therein a main chamber and is provided with a forward air conduit and a return air conduit. The forward air conduit provides a path for the pressurized air in the main chamber to force a valve stem of the shuttle valve to conduct a forward movement for a drive stroke. The return air conduit provides a path for the pressurized air in the cylinder to force the valve stem to conduct a return movement after the nail gun has completed the drive stroke. By depressing an actuating bar of the trigger valve a single time, the valve stem can be forced to conduct repeated forward and return movements, and thus the nail gun can conduct repeated drive strokes for stably striking a nail.