Abstract: A headboard structure having an upper connecting rod, a lower connecting rod, two supporting rods and a plurality of longitudinal telescopic rods; the two supporting rods are spaced part from each other and disposed at a left and a right side of the headboard structure respectively, and the upper connecting rod and the lower connecting rod are arranged between the two supporting rods and spaced part from each other along an up-down direction, and are detachably connected to the two supporting rods. Due to the longitudinal telescopic rods, sub-rods can be retracted into the sleeve pipes, so that the overall height of a headboard is reduced, the packaging size is reduced, and the transportation and package costs are reduced.

Abstract: A bed frame assembly, having four bed feet, two transverse support frames, and two longitudinal support frames; each bed foot is connected with one corresponding transverse support frame and one corresponding longitudinal support frame. At least one connection bar piece is arranged on each of a first side and a second side of each transverse support frame, and the connection bar piece is inserted to a corresponding bed foot and is locked by a corresponding fastener, so that the transverse support frame is more convenient and faster to assemble. The bed frame can be disassembled into the bed feet, the transverse support frames and the longitudinal support frames, which facilitates packaging and transportation.

Abstract: An assembled drawer having a bottom plate, a rear plate, and two side plates; the rear plate and the two side plates are detachably installed on the bottom plate; the rear plate is connected to a rear side of the bottom plate, and the two side plates are connected to a left side and a right side of the bottom plate respectively, and the rear plate and the two side plates are connected to the bottom plate by engagement of fastening blocks into fastening grooves; the two side plates are fixed to a left side edge and a right side edge of the rear plate respectively through fasteners, and the rear plate and the two side plates are erected on the bottom plate to define a storage space on the bottom plate. The drawer has a simple structure and easy to assemble and disassemble.

Abstract: A bed frame installation structure, having two bed posts spaced apart from each other and a bed support rod; a bottom of each end of the bed support rod is bent and warped into a hook piece, and a top side of which is formed with a locking plate; a locking hole and a hook hole are formed on each bed post corresponding to a corresponding end of the bed support rod; the hook piece is accommodated in a corresponding bed post to engage with a lower edge of the hook hole, and the locking plate is fixed to the locking hole by a screw. A bed frame structure is also disclosed having a bed surface frame and two bed frame installation structures spaced apart from each other; a bed side beam is provided between two corresponding bed posts of the two sets of the bed frame installation structure.

Abstract: Embodiments of this application provide application processing methods and apparatuses. One method includes: receiving a startup request from a first client device, where the startup request is used to start an application. Loading, in a high-level language execution environment of an enclave, a manifest file of the application and a dependency relationship between an enclave entrypoint function of the application and a static dependency class, and loading a static dependency class of the enclave entrypoint function of the application based on the manifest file and the dependency relationship between the enclave entrypoint function and the static dependency class.

Abstract: A collapsible headboard includes a left headboard, a right headboard, and a middle filling part between the left and right headboards. Respective fronts of the left and right headboards and the middle filling part are provided with cushions. A front of the collapsible headboard is connected with a headboard covering located on outer sides of the cushions. Backs of the left and right headboards are provided with at least one transverse connecting rod. The transverse connecting rod is connected to the backs of the left and right headboards and the middle filling part. The collapsible headboard can be assembled and disassembled easily.

Abstract: A bedstead includes a headboard, a footboard and two sideboards to form a bed frame. The two sideboards are connected with bed legs. A plurality of bed beams are mounted between the two sideboards. Each sideboard includes two connected side boards. The bed legs are connected to four corners of the bed frame. Aback of the headboard is formed with an accommodating cavity. After being disassembled, the side boards, the footboard, the bed beams and the bed legs are placed into the accommodating cavity. The bedstead can be assembled easily. It is more convenient to pack and transport the bedstead after being disassembled, thereby saving the transportation cost.

Abstract: A collapsible headboard includes a left headboard, a right headboard, and a middle filling part between the left and right headboards. Respective fronts of the left and right headboards and the middle filling part are provided with cushions. A front of the collapsible headboard is connected with a headboard covering located on outer sides of the cushions. Backs of the left and right headboards are provided with at least one transverse connecting rod. The transverse connecting rod is connected to the backs of the left and right headboards and the middle filling part. The collapsible headboard can be assembled and disassembled easily.

Abstract: A headboard structure includes a backboard mounted on a headboard frame, a sponge cushion on the backboard, and a headboard covering on the sponge cushion. The sponge cushion is formed with at least one groove. The groove is provided with an LED light and a sponge strip in front of the LED light. The headboard covering has a light-pervious area corresponding in position to the LED light. The headboard provided with the LED light has a lighting effect, and the user can lean against the headboard comfortably, thereby improving the function of the headboard.

Abstract: A drawer structure includes a front board, a rear board, a left board, a right board, and a bottom board. Surfaces of the rear board, the left board, the right board and the bottom board are covered with a fabric. A junction of the left board and the rear board and a junction of the right board and the rear board are fastened by hook-and-loop fasteners. The front board is connected and fixed to the left board and the right board. The bottom board is connected and fixed to the rear board, the left board and the right board. The assembly of the drawer structure is simple and convenient. The structure is simple, and it is easy to transport the drawer.

Abstract: A screw-free drawer structure includes a front board, a rear board, two side boards, and a bottom board. The side boards are foldably connected to opposite sides of the bottom board. An upper end of a junction of each side board and the rear board is detachably connected through an elastic fastener that is in snap-fit with a fastener hole. A junction of each side board and the front board is detachably connected through an elastic expansion member that is elastically expanded to be in snap-fit with an engaging hole. Therefore, the screw-free assembly of the drawer structure is realized, and the assembly of the drawer structure is convenient and easy.

Abstract: The present invention provides a method for extracting ?-polylysine (?-PL) and its hydrochloride salt from fermentation broth, which belongs to the field of bio-separation engineering. ?-PL and its hydrochloride salt are produced from fermentation broth through sequential solid-liquid separation, ultrafiltration, two-stage ion exchange, nanofiltration, evaporation concentration and drying techniques. Technologies of membrane filtration and two-stage ion exchange are applied to the preparation of ?-PL and its hydrochloride salt in the present invention, and the invention are characterized by reduced cost, improved automation, and increased product yield and purity, and the method of the present invention would be more suitable for industrial production.