Abstract: The disclosure discloses a method for producing maltodextrin with a single polymerization degree by multienzyme coupling, and belongs to the technical field of biology. The disclosure provides a method for producing non-reducing maltodextrin with a uniform and low polymerization degree. After a reaction is preformed for 2-6 hours by using the method of the disclosure, the content of 4-O-?-maltohexaosyl ?-D-glucoside in a reaction solution can be as high as 57.2% to 77.3%, accounting for 50% to 90% of the total amount of maltodextrin in the reaction solution. In maltodextrin prepared by using the method of the disclosure, non-reducing maltodextrin with low polymerization degree only includes 4-O-?-maltohexaosyl ?-D-glucoside, and the content of non-reducing maltodextrin with low polymerization degree can be 50% to 90% of the total amount of maltodextrin.

Abstract: The disclosure provides a to-be-tested object extraction apparatus and a nucleic acid testing integrated machine with the to-be-tested object preparation apparatus.

Abstract: Provided is a sample analysis device, including: a housing, a reagent preparation apparatus, a sample processing apparatus, and an analysis apparatus. A first independent space, a second independent space and a third independent space are sequentially arranged in the housing at intervals. The reagent preparation apparatus is arranged in the first independent space. The sample processing apparatus is arranged in the second independent space, a first conveying channel is arranged between the reagent preparation apparatus and the sample processing apparatus, a first switching piece is arranged at the first conveying channel, and the first switching piece has a first opening state and a first closing state.

Abstract: The disclosure provides a to-be-tested object processing apparatus and a nucleic acid testing integrated machine with the to-be-tested object processing apparatus.

Abstract: Provided is an amplification plate assembly and a state detection method of the amplification plate assembly.

Abstract: The present disclosure provides an amplifying and testing device and a carrier loading method for amplifying and testing. The amplifying and testing device includes: a support, being provided with a test window; a test device arranged on the support and located at the test window; a reagent loading device, including a bracket and a carrier removably arranged on the bracket, the bracket is movably arranged on the support in a transverse direction, and the carrier moves along with the bracket, such that the carrier has a storage position located below the test window and a loading position moving out of the support; and a heating device movably arranged on the support in a vertical direction and capable of driving the carrier to lift, so as to lift the carrier to a test position cooperating with the test device in a butting manner.

Abstract: The disclosure provides a reagent preparation apparatus and a nucleic acid testing integrated machine having the reagent preparation apparatus.

Abstract: The invention discloses a head-mounted display apparatus. The head-mounted display comprises a headband module and a head-mounted display module, wherein the head-mounted display comprises an optical module, the headband comprises a connecting structure connected with the head-mounted display housing so as to adjust the wearing angle of the head-mounted display module; The optical module comprises a module housing, a left lens barrel mechanism, a right lens barrel mechanism, a left sight distance adjusting mechanism and a left pupillary distance adjusting mechanism for adjusting the sight distance and pupillary distance of the left lens barrel mechanism, a right sight distance adjusting mechanism and a right pupillary distance adjusting mechanism for adjusting the sight distance and pupillary distance of the right lens barrel mechanism. The head-mounted display can separately adjust the sight distance and pupillary distance of the left and right lens barrel mechanism, as well as the wearing angle.

Abstract: A reagent filling device and a sample analyzer with the reagent filling device. The reagent filling device includes a base, a horizontal rotation component, a vertical lifting component and a cantilever component, wherein, the horizontal rotation component is connected with the base, the vertical lifting component moves in a vertical direction relative to the base, the vertical lifting component drives the cantilever component to move along the vertical direction, the cantilever component is rotatably arranged relative to the vertical lifting component, there are a plurality of cantilever components, the cantilever component includes a cantilever body, a length of the cantilever body of at least one cantilever component is greater than a length of the cantilever body of each of the rest cantilever components, and the cantilever component is configured to add a reagent in a reagent disc to a reaction cup in a reaction disc.

Abstract: The invention discloses an optical module and a head-mounted display apparatus. The optical module includes a left/right lens barrel mechanism, a left/right sight distance adjusting mechanism, and a left/right pupillary distance adjusting mechanism; The left lens barrel mechanism includes a left lens barrel assembly and a left display screen disposed behind the left lens barrel assembly through a left screen bracket; The left sight distance adjusting mechanism adjusts the distance between the left display screen and the left lens barrel assembly; The left pupillary distance adjusting mechanism drives the left lens barrel mechanism to move left and right. Symmetrically, the structure of the right side is the same as left. The optical module adjusts the sight distance/pupillary distance of left and right eye separately by the left and right sight distance adjusting mechanism/pupillary distance adjusting mechanism, so that images seen by both eyes are clearer.

Abstract: The invention discloses a head-mounted display apparatus. The head-mounted display comprises a headband module and a head-mounted display module, wherein the head-mounted display comprises an optical module, the headband comprises a connecting structure connected with the head-mounted display housing so as to adjust the wearing angle of the head-mounted display module; The optical module comprises a module housing, a left lens barrel mechanism, a right lens barrel mechanism, a left sight distance adjusting mechanism and a left pupillary distance adjusting mechanism for adjusting the sight distance and pupillary distance of the left lens barrel mechanism, a right sight distance adjusting mechanism and a right pupillary distance adjusting mechanism for adjusting the sight distance and pupillary distance of the right lens barrel mechanism. The head-mounted display can separately adjust the sight distance and pupillary distance of the left and right lens barrel mechanism, as well as the wearing angle.

Abstract: The invention discloses an optical module and a head-mounted display apparatus. The optical module includes a left/right lens barrel mechanism, a left/right sight distance adjusting mechanism, and a left/right pupillary distance adjusting mechanism; The left lens barrel mechanism includes a left lens barrel assembly and a left display screen disposed behind the left lens barrel assembly through a left screen bracket; The left sight distance adjusting mechanism adjusts the distance between the left display screen and the left lens barrel assembly; The left pupillary distance adjusting mechanism drives the left lens barrel mechanism to move left and right. Symmetrically, the structure of the right side is the same as left. The optical module adjusts the sight distance/pupillary distance of left and right eye separately by the left and right sight distance adjusting mechanism/pupillary distance adjusting mechanism, so that images seen by both eyes are clearer.

Abstract: A fabrication method includes: (1) forming a wire array on a fabrication substrate; (2) forming a porous layer within a portion of the fabrication substrate below the wire array; (3) separating the porous layer and the wire array from a remaining portion of the fabrication substrate; and (4) affixing top ends of the wire array to a target substrate.

Abstract: A fabrication method includes: (1) forming a wire array on a fabrication substrate; (2) forming a porous layer within a portion of the fabrication substrate below the wire array; (3) separating the porous layer and the wire array from a remaining portion of the fabrication substrate; and (4) affixing top ends of the wire array to a target substrate.

Abstract: A device fabrication method includes: (1) providing a growth substrate including an oxide layer; (2) forming a metal layer over the oxide layer; (3) forming a stack of device layers over the metal layer; (4) performing fluid-assisted interfacial debonding of the metal layer to separate the stack of device layers and the metal layer from the growth substrate; and (5) affixing the stack of device layers to a target substrate.

Abstract: A sol-flame method includes 1) forming a sol-gel precursor solution of a source of a dopant; 2) coating a nanostructure or a thin film with the sol-gel precursor solution; and 3) subjecting the coated nanostructure or the coated thin film to flame annealing to form a doped nanostructure or a doped thin film.

Abstract: A method of combustion includes: (1) introducing microparticles and nanoparticles into a combustion chamber, where the microparticles and the nanoparticles are formed of different materials; and (2) using an optical source, irradiating the microparticles and the nanoparticles within the combustion chamber to ignite the microparticles.

Abstract: A device fabrication method includes: (1) providing a growth substrate including an oxide layer; (2) forming a metal layer over the oxide layer; (3) forming a stack of device layers over the metal layer; (4) performing fluid-assisted interfacial debonding of the metal layer to separate the stack of device layers and the metal layer from the growth substrate; and (5) affixing the stack of device layers to a target substrate.

Abstract: A sol-flame method includes 1) forming a sol-gel precursor solution of a source of a dopant; 2) coating a nanostructure or a thin film with the sol-gel precursor solution; and 3) subjecting the coated nanostructure or the coated thin film to flame annealing to form a doped nanostructure or a doped thin film.

Abstract: A device fabrication method includes: (1) providing a growth substrate including a base and an oxide layer disposed over the base; (2) forming a metal layer over the oxide layer; (3) forming a stack of device layers over the metal layer; (4) performing interfacial debonding of the metal layer to separate the stack of device layers and the metal layer from the growth substrate; and (5) affixing the stack of device layers to a target substrate.