Abstract: Disclosed is a method of preparing glufosinate, and specifically a method of preparing glufosinate represented by formula (1) or its salt or enantiomer, or a mixture of its enantiomers in any ratio, comprising a step of hydrolyzing a compound of formula (III) to generate a compound of formula (1). Due to a distinctive reaction mechanism adopted in the method of the present disclosure, a halogenated hydrocarbon by-product in the Michaelis-Arbuzov reaction can be avoided and thus the destructive impact of the halogenated hydrocarbon by-product on ozone in the aerosphere can be prevented. Accordingly, the equipment and engineering investments required for the separation, purification, and collection of the foregoing by-product are eliminated, and the potential environmental and safety hazards brought by the foregoing by-product are also avoided.

Abstract: Embodiments of the present disclosure relate to a D-amino acid oxidase mutant and application in preparing L-glufosinate thereof. The D-amino acid oxidase mutant has an amino acid substitution at at least one of position 62 and position 226 of an amino acid sequence of the D-amino acid oxidase mutant when compared to an amino acid sequence of a D-amino acid oxidase as set forth in SEQ ID NO. 1, the position 62 and position 226 being defined with reference to SEQ ID NO. 1, and the amino acid sequence of the D-amino acid oxidase mutant having at least 90% identity to SEQ ID NO. 1.

Abstract: A catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction as well as a preparation method and use thereof are provided. The catalyst includes a zero-valent iron and phosphorus co-modified carbon material which includes a carbon material as a carrier, a zero-valent iron supported onto the carrier and serving as an active component, and a phosphate functional group formed on the surface of the carbon material. The preparation method includes: co-modifying a carbon material using a ferric salt and organic phosphorus to obtain the catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction. The present application further provides a method for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction.

Abstract: The present invention provides a stackable drone and a drone swarm comprising at least two stackable drones. Each drone comprising: a fuselage comprising a first end and a second end; a mating structure arranged in the fuselage and configured to have an opening at the first end of the fuselage, the mating structure forming a mating recess on a first side of the fuselage, the mating recess having an opening at the first side of the fuselage for receiving a mating projection from a further stacking unmanned aerial vehicle. The stackable drones do not require a large area of ground for take-off and landing, require only a small space for storage and transportation. When landing, based on the conical or pyramidal structure, the drone may slide down by gravitational force into the mating recess of another drone thereunder without needs of high precision positioning or alignment system.

Abstract: The present invention provides a stackable drone and a drone swarm comprising at least two stackable drones. Each drone comprising: a fuselage comprising a first end and a second end; a mating structure arranged in the fuselage and configured to have an opening at the first end of the fuselage, the mating structure forming a mating recess on a first side of the fuselage, the mating recess having an opening at the first side of the fuselage for receiving a mating projection from a further stacking unmanned aerial vehicle. The stackable drones do not require a large area of ground for take-off and landing, require only a small space for storage and transportation. When landing, based on the conical or pyramidal structure, the drone may slide down by gravitational force into the mating recess of another drone thereunder without needs of high precision positioning or alignment system.

Abstract: The present invention provides a navigation controller with real-time visual indication of a specific cardinal direction in relation to a front direction of the navigation controller which allows checking on whether the heading estimation of the UAV is subject to any magnetic interference. The navigation controller comprises a housing comprising a distinctive visual mark for indicating the front direction of the navigation controller; a GNSS satellite signal receiving module and a visual indication module comprising a circular array of visual indicators evenly arranged in a circular ring and configured to generate visual indication of the specific cardinal direction in relation to the front direction of the navigation controller.

Abstract: This invention comprises a control device and a communication port device applied to drone, and a drone using such devices. The control device comprises a carrier board and a main control board that is detachably configured on the carrier board, said main control board is electrically connected with the carrier board, and the carrier board is configured with an interface device in which connections between a plurality of kinds of external devices with said carrier board are established. The carrier board is mainly used for connection with other external electronic devices and power distribution, and the main control board is responsible for processing sensor data and delivering control information. The main control board and the carrier board are connected through a single interface to enable a data transmission. The communication port device is configured on the drone flight controller.

Abstract: This invention comprises a control device and a communication port device applied to drone, and a drone using such devices. The control device comprises a carrier board and a main control board that is detachably configured on the carrier board, said main control board is electrically connected with the carrier board, and the carrier board is configured with an interface device in which connections between a plurality of kinds of external devices with said carrier board are established. The carrier board is mainly used for connection with other external electronic devices and power distribution, and the main control board is responsible for processing sensor data and delivering control information. The main control board and the carrier board are connected through a single interface to enable a data transmission. The communication port device is configured on the drone flight controller.

Abstract: A soybean cultivar designated UA Mulberry is disclosed. The invention relates to the seeds of soybean cultivar UA Mulberry, to the plants of soybean cultivar UA Mulberry, to the plant parts of soybean cultivar UA Mulberry, and to methods for producing progeny of soybean cultivar UA Mulberry. The invention also relates to methods for producing a soybean plant containing in its genetic material one or more transgenes and to the transgenic soybean plants and plant parts produced by those methods. The invention also relates to soybean cultivars or breeding cultivars, and plant parts derived from soybean cultivar UA Mulberry. The invention also relates to methods for producing other soybean cultivars, lines, or plant parts derived from soybean cultivar UA Mulberry, and to the soybean plants, varieties, and their parts derived from use of those methods. The invention further relates to hybrid soybean seeds, plants, and plant parts produced by crossing cultivar UA Mulberry with another soybean cultivar.

Abstract: A soybean cultivar designated R10-230 is disclosed. The invention relates to the seeds of soybean cultivar R10-230, to the plants of soybean cultivar R10-230, to the plant parts of soybean cultivar R10-230, and to methods for producing progeny of soybean cultivar R10-230. The invention also relates to methods for producing a soybean plant containing in its genetic material one or more transgenes and to the transgenic soybean plants and plant parts produced by those methods. The invention also relates to soybean cultivars or breeding cultivars, and plant parts derived from soybean cultivar R10-230. The invention also relates to methods for producing other soybean cultivars, lines, or plant parts derived from soybean cultivar R10-230, and to the soybean plants, varieties, and their parts derived from use of those methods. The invention further relates to hybrid soybean seeds, plants, and plant parts produced by crossing cultivar R10-230 with another soybean cultivar.

Abstract: A soybean cultivar designated UA 5715GT is disclosed. The invention relates to the seeds of soybean cultivar UA 5715GT, to the plants of soybean cultivar UA 5715GT, to the plant parts of soybean cultivar UA 5715GT, and to methods for producing progeny of soybean cultivar UA 5715GT. The invention also relates to methods for producing a soybean plant containing in its genetic material one or more transgenes and to the transgenic soybean plants and plant parts produced by those methods. The invention also relates to soybean cultivars or breeding cultivars, and plant parts derived from soybean cultivar UA 5715GT. The invention also relates to methods for producing other soybean cultivars, lines, or plant parts derived from soybean cultivar UA 5715GT, and to the soybean plants, varieties, and their parts derived from use of those methods. The invention further relates to hybrid soybean seeds, plants, and plant parts produced by crossing cultivar UA 5715GT with another soybean cultivar.