Abstract: A delay-enhanced inverter circuit (DE-inverter) includes: a non-delay-enhanced inverter circuit (NE-inverter) having an output at a first node and an input at a second node; and a capacitive device feedback-coupled between the first node and the second node. The capacitive device includes: a first positive-channel metal-oxide (PMOS) field-effect transistor (FET) (PFET) feedback-coupled between the first node and the second node, the first PFET having a capacitor-configuration; and a first negative-channel metal-oxide (NMOS) FET (NFET) feedback-coupled between the first node and the first reference voltage, the first NFET having a capacitor-configuration.

Abstract: The present disclosure discloses a production process for winding and weaving a decorative lamp based on a string-like metal strip, and a decorative lamp, and aims to provide a production process for winding and weaving a decorative lamp based on a string-like metal strip, achieving high structural stability and long service life. A key pint of the technical solution of the present disclosure is that the metal strip cooperates with a three-dimensional architecture or a planar architecture, so that there is a fixed direction provided for interlaced winding of the metal strip to form a corresponding shape based on the three-dimensional architecture or the planar architecture, thereby improving the overall stability. After a light string is wound around the metal strips, an exposed structural arrangement can make the wound three-dimensional architecture or planar architecture more tridimensional. The present disclosure is applicable to the technical field of decorative lamps.

Abstract: The present invention provides a genetically engineered pantoic acid-producing strain having or having an enhanced NADH-dependent acetohydroxy acid reductoisomerase, a method for producing the strain, a method for producing D-pantoic acid using the strain, and use thereof in production of D-pantoic acid.

Abstract: A battery module, a battery pack, and a method of manufacturing the battery pack are provided. A bracket includes at least one middle bracket and a top bracket. The middle bracket is arranged between, any one or a combination of, the top battery cell group and the non-top battery cell group and adjacent two of the battery cell groups of the non-top battery cell group. The top bracket is arranged on a side of the top battery cell group facing away from the non-top battery cell group. Each of a side surface of the middle bracket adjacent to the battery cell groups and a side surface of the top bracket adjacent to the battery cell groups is provided with a plurality of first accommodating grooves arranged along the first direction. Each of the battery cells is fixed in a corresponding one of the first accommodating grooves.

Abstract: Provided are a signal acquisition assembly of a cell and a battery pack. The signal acquisition assembly includes a support, a circuit board, multiple pin-type electrical connectors, and multiple signal acquisition lines. The support includes a first side surface and a second side surface opposite to each other in a first direction. The circuit board is provided with multiple plug-in structures. A pin-type electrical connector has a first connection portion and a pin-type plug-in portion. Pin-type plug-in portions of the pin-type electrical connectors are plugged in the plug-in structures in one-to-one correspondence. The pin-type plug-in portion is electrically connected to a battery management circuit carried by the circuit board. Second connection portions of the signal acquisition lines are correspondingly connected to first connection portions of the multiple pin-type electrical connectors. The acquisition portion of the signal acquisition line is configured to acquire the signal of the cell.

Abstract: A battery pack includes a housing, a battery module, a battery management system (BMS) module, and an isolation plate disposed between the battery module and the BMS module. An accommodating space is formed in the housing. The battery module is disposed within the accommodating space. The isolation plate is hermetically connected to the housing to isolate the battery module from the BMS module.

Abstract: A battery pack is disclosed. The battery pack includes a battery module and a battery management assembly connected to the battery module. The battery management assembly includes a printed circuit board, a positive busbar, a negative busbar, and a flexible circuit board. One end of the positive busbar and one end of the negative busbar are connected to the battery module, respectively. Another end of the positive busbar and another end of the negative busbar are connected to the printed circuit board, respectively. The flexible circuit board is connected to the positive busbar, the negative busbar, the battery module and the printed circuit board, respectively.

Abstract: A battery system and a method of assembling a battery system are provided. The battery system includes at least one battery and a battery box, the battery box includes a box body assembly and a battery bracket, the battery box is provided with a plurality of battery slot positions for accommodating the at least one battery, each of the plurality of battery slot positions includes a first battery slot position and a second battery slot position, the first battery slot position and the second battery slot position are disposed oppositely, the first battery slot position is disposed in the battery bracket, the second battery slot position is disposed in the box body assembly, the box body assembly and the battery bracket clamp the at least one battery.

Abstract: A battery system includes: a casing, an installation bracket, a first glue and a cover. The casing is provided with an accommodation cavity therein; the installation bracket is disposed at an opening of the accommodation cavity, and the installation bracket includes a first bracket body and a second bracket body that are connected. Inner walls of the casing, the first bracket body and the second bracket body together define a seal groove; the first glue is disposed in the seal groove, and the cover is fixed at an end of the casing, and at least a portion of the cover is connected to the first glue.

Abstract: The present disclosure belongs to the field of biotechnology. A Bacillus velezensis dry suspending agent is provided, which includes: bacterial cells collected after Bacillus velezensis is fermented and centrifuged, a wetting agent, a dispersing agent, a disintegrating agent, and a carrier. The wetting agent is an organic polymer sulfonate. The Bacillus velezensis dry suspending agent of the present disclosure has ideal wetting time, suspension rate, and spore content. Further, the dry suspending agent can maintain high spore survival rate in an environment of ultraviolet radiation. Moreover, a preparation method of a Bacillus velezensis dry suspending agent is further provided. The dry suspending agent can maintain high spore content under the conditions of selection and cooperation of suitable parameters.

Abstract: A delay-enhanced inverter circuit (DE-inverter) includes: a non-delay-enhanced inverter circuit (NE-inverter) having an output at a first node and an input at a second node; and a capacitive device feedback-coupled between the first node and the second node. The capacitive device includes: a first positive-channel metal-oxide (PMOS) field-effect transistor (FET) (PFET) feedback-coupled between the first node and the second node, the first PFET having a capacitor-configuration; and a first negative-channel metal-oxide (NMOS) FET (NFET) feedback-coupled feedback-between the first node and the first reference voltage, the first NFET having a capacitor-configuration.

Abstract: Provided are a microorganism for producing a pantoic acid, and a construction method therefor and an application thereof. The microorganism for producing the pantoic acid is obtained by knocking out a gene in Escherichia coli and introducing an exogenous gene. The obtained microorganism is Escherichia coli that is registered in the China General Microbiological Culture Collection Center with an accession number of CGMCC No. 21699. A pantoic acid synthesis pathway has been opened up, and accumulation of the pantoic acid can be achieved in a fermentation process.

Abstract: Related are a recombinant microorganism for producing L-valine, a construction method and an application thereof. Through enhancing amino acid dehydrogenase activity of L-valine fermentation strain, and/or activating an Entner-Doudoroff (ED) metabolic pathway, a problem in L-valine fermentation process that reducing power is unbalanced is solved, thereby the titer and yield of L-valine produced by Escherichia coli are improved, and L-valine was produced by one-step anaerobic fermentation.

Abstract: Related are a recombinant microorganism for producing L-valine, a construction method and an application thereof. Through transferring an amino acid dehydrogenase gene and/or activating activity of a transhydrogenase and/or a NAD kinase, reducing power of NADPH in cell is increased, the titer and yield of L-valine generated by Escherichia coli are improved, and the production of L-valine by one-step anaerobic fermentation is achieved.

Abstract: Related are a recombinant microorganism for producing L-valine, a construction method and an application thereof. Through transferring an acetohydroxy acid reductoisomerase gene and/or an amino acid dehydrogenase gene into a microorganism, and enhancing activity of an acetohydroxy acid reductoisomerase and/or an amino acid dehydrogenase, the titer and yield of L-valine generated by Escherichia coli may be improved, and L-valine was produced by one-step anaerobic fermentation.

Abstract: Disclosed is an optical fiber lantern, which aims to provide an optical fiber lantern with good integrity, simple structure, strong stability and high aesthetics. The key points of the technical solutions are that the lamp beads are directly powered by a low-voltage power supply or a plug-in power supply, and after the lamp beads emit light, the light is transmitted to a periphery of the petals or the flower core part of the bouquet by optical fiber rods. The low-voltage power supply mode adopted has small use limitation, strong practicability and simple structure, and the present invention is suitable for the technical field of handicraft lanterns.

Abstract: Embodiments of the present disclosure relate to the field of spatial positioning, and disclose a method and apparatus for spatial positioning based on augmented reality. In the embodiments of the present disclosure, the augmented reality based method for spatial positioning including: acquiring an offset angle of a dual-camera coordinate system relative to a world coordinate system, wherein the world coordinate system is a coordinate system that is preset by using a known target position of a positioning photosphere as a reference coordinate; acquiring an actual position of the positioning photosphere in the world coordinate system; calculating a coordinate value of the dual camera in the world coordinate system in accordance with the offset angle, the actual position of the positioning photosphere, and the target position; and determining a position of a virtual object in a virtual space in the world coordinate system in accordance with the coordinate value of the dual camera in the world coordinate system.

Abstract: Embodiments of the present disclosure relate to the field of spatial positioning, and disclose a method and apparatus for spatial positioning based on augmented reality. In the embodiments of the present disclosure, the augmented reality based method for spatial positioning including: acquiring an offset angle of a dual-camera coordinate system relative to a world coordinate system, wherein the world coordinate system is a coordinate system that is preset by using a known target position of a positioning photosphere as a reference coordinate; acquiring an actual position of the positioning photosphere in the world coordinate system; calculating a coordinate value of the dual camera in the world coordinate system in accordance with the offset angle, the actual position of the positioning photosphere, and the target position; and determining a position of a virtual object in a virtual space in the world coordinate system in accordance with the coordinate value of the dual camera in the world coordinate system.

Abstract: The present invention discloses a construction method for serial sequencing libraries of RAD tags, including the following steps: conducting an enzyme digestion reaction with DNA using endonuclease; ligating; enzyme-digested fragments with adaptors that contain restriction enzyme sites of SapI, featured base sequences for serial ligation of RAD tags, and universal sequences for the binding of amplification primers; conducting PCR amplification using a combination of biotin primers and general primers; collecting target PCR product by gel; amplifying again; and equally mixing and purifying; conducting enzyme digestion on the PCR products using the SapI enzyme and heating tags in series; purifying the long serial tags through gels and then conducting PCR.