Abstract: An experimental device and method for supercritical CO2/H2O mixed fluid huff and puff for shale oil development includes a CO2 storage tank, a water vapor generator, a mixing vessel, and a core holder; the CO2 storage tank and the water vapor generator are in communication with the mixing vessel; a first pressure gauge and a hygronom are connected to an upper end of the mixing vessel, and a displacement pump is connected to a lower end of the mixing vessel; the mixing vessel is connected to an inlet end of the core holder; the core holder is connected to an inlet end of a drying pipe, and the measuring cylinder is disposed upside down in a liquid containing dish, where the liquid containing dish and the measuring cylinder are filled with a saturated sodium carbonate solution.

Abstract: This application includes an interactive control method and apparatus, a storage medium, and an electronic device. In these method, apparatus, storage medium, and device, a touch operation performed on a touch panel is recognized. A holographic projection device is configured to display a holographic projection-based virtual character. The touch panel is disposed on the holographic projection device. An interaction request is generated according to the recognized touch operation. The interaction request corresponds to an interaction with the holographic projection-based virtual character. Further the holographic projection-based virtual character is controlled to perform an interactive action associated with the interaction request.

Abstract: The present application proposes a method for detecting an okadaic acid based on a near-infrared photoelectric composite material, which includes the following steps: synthesizing NaYF4: Yb, Tm up-conversion nanoparticles (UCNPs) and a semiconductor material flower-like tungsten oxide (WO3) by a simple high-temperature solvothermal method; coupling the UCNPs with an okadaic acid monoclonal antibody through a classic amidation reaction to construct a competitive near-infrared photoelectrochemical immunosorbent assay (cNIR-PECIA) for okadaic acid detection. In addition, the present application employs a screen-printed carbon electrode (SPE) as the working electrode, and thus only requires a small amount of electrolytes, which is low-cost and maintenance-free.

Abstract: The present application proposes a method for detecting an okadaic acid based on a near-infrared photoelectric composite material, which includes the following steps: synthesizing NaYF4: Yb, Tm up-conversion nanoparticles (UCNPs) and a semiconductor material flower-like tungsten oxide (WO3) by a simple high-temperature solvothermal method; coupling the UCNPs with an okadaic acid monoclonal antibody through a classic amidation reaction to construct a competitive near-infrared photoelectrochemical immunosorbent assay (cNIR-PECIA) for okadaic acid detection. In addition, the present application employs a screen-printed carbon electrode (SPE) as the working electrode, and thus only requires a small amount of electrolytes, which is low-cost and maintenance-free.

Abstract: A method is performed at a computing system for customizing a user interface panel of a virtual space based on user locations. The computing system is communicatively connected to a head-mounted display wore by a user. The method includes: generating a virtual space including a user interface panel, the user interface panel having a default location in the virtual space; rendering the virtual space in the head-mounted display; measuring the head-mounted display's location in a physical space using a position tracking system adjacent the user; determining the user's location in the virtual space according to the head-mounted display's location in the physical space; and updating the user interface panel's default location in the virtual space in accordance with the user's location in the virtual space.

Abstract: The present disclosure relates to a quantum dot light-emitting layer, a quantum dot light-emitting device and preparing methods therefor and belongs to the field of liquid crystal display. The preparing method for a quantum dot light-emitting layer includes: placing a first halide AX and a second halide BX2 in a solvent; stirring and dispersing the reaction system formed by the first halide AX, the second halide BX2 and the solvent at a set temperature for a set time period; cooling the reaction system at a cooling rate of 0.1° C./24 h-1° C./24 h to generate an A4BX6 single crystal thin film containing ABX3 quantum dots, and using the A4BX6 single crystal thin film containing ABX3 quantum dots as the quantum dot light-emitting layer; wherein A includes one of Cs+, CH3NH3+ and HC(NH2)2+; B includes one of Pb2+ and Sn2+; and X includes one of Cl?, Br? and I?.

Abstract: This application includes an interactive control method and apparatus, a storage medium, and an electronic device. In these method, apparatus, storage medium, and device, a touch operation performed on a touch panel is recognized. A holographic projection device is configured to display a holographic projection-based virtual character. The touch panel is disposed on the holographic projection device. An interaction request is generated according to the recognized touch operation. The interaction request corresponds to an interaction with the holographic projection-based virtual character. Further the holographic projection-based virtual character is controlled to perform an interactive action associated with the interaction request.

Abstract: A method is performed at a computing system for rendering a content preview in a virtual space based on user locations. The computing system is communicatively connected to a head-mounted display wore by a user. The method includes: rendering a user interface panel in the virtual space, wherein the user interface panel includes multiple content posters, each having a unique location in the virtual space; measuring the head-mounted display's location in a physical space using a position tracking system adjacent the user; determining the user's location in the virtual space according to the head-mounted display's location in the physical space; and in accordance with a determination that the user's location and at least one of the multiple content posters' location in the virtual space satisfy a predefined condition, replacing the user interface panel with a content preview associated with the corresponding content poster in the virtual space.

Abstract: A method is performed at a computing system for updating an operation setting of a virtual space in response to alerts. The computing system is communicatively connected to a head-mounted display wore by a user. The method includes: rendering an application in the virtual space in accordance with a current location of the user in the virtual space, the user's current location in the virtual space determined according to the head-mounted display's location in the physical space measured using a position tracking system; receiving an alert from a device that is communicatively connected to the computing system; generating and displaying an icon in the virtual space, the icon being uniquely associated with the alert; and in response to a predetermined action from the user, replacing the application in the virtual space with the VR content associated with the alert.

Abstract: A method is performed at a computing system for rendering a content preview in a virtual space based on user locations. The computing system is communicatively connected to a head-mounted display wore by a user. The method includes: rendering a user interface panel in the virtual space, wherein the user interface panel includes multiple content posters, each having a unique location in the virtual space; measuring the head-mounted display's location in a physical space using a position tracking system adjacent the user; determining the user's location in the virtual space according to the head-mounted display's location in the physical space; and in accordance with a determination that the user's location and at least one of the multiple content posters' location in the virtual space satisfy a predefined condition, replacing the user interface panel with a content preview associated with the corresponding content poster in the virtual space.

Abstract: The present disclosure relates to a quantum dot light-emitting layer, a quantum dot light-emitting device and preparing methods therefor and belongs to the field of liquid crystal display. The preparing method for a quantum dot light-emitting layer includes: placing a first halide AX and a second halide BX2 in a solvent; stirring and dispersing the reaction system formed by the first halide AX, the second halide BX2 and the solvent at a set temperature for a set time period; cooling the reaction system at a cooling rate of 0.1° C./24 h?1° C./24 h to generate an A4BX6 single crystal thin film containing ABX3 quantum dots, and using the A4BX6 single crystal thin film containing ABX3 quantum dots as the quantum dot light-emitting layer; wherein A includes one of Cs+, CH3NH3+ and HC(NH2)2+; B includes one of Pb2+ and Sn2+; and X includes one of Cl?, Br? and I?.

Abstract: A method is performed at a computing system for customizing a user interface panel of a virtual space based on user locations. The computing system is communicatively connected to a head-mounted display wore by a user. The method includes: generating a virtual space including a user interface panel, the user interface panel having a default location in the virtual space; rendering the virtual space in the head-mounted display; measuring the head-mounted display's location in a physical space using a position tracking system adjacent the user; determining the user's location in the virtual space according to the head-mounted display's location in the physical space; and updating the user interface panel's default location in the virtual space in accordance with the user's location in the virtual space.

Abstract: The present invention belongs to the field of biological detection. Multi-line immunochromatographic test strip for semi-quantitative detection of aflatoxin B1 comprises a paperboard, wherein a water-absorbing pad, a detection pad, a gold-labeled pad and a sample pad are adhered sequentially on one surface of the paperboard from top to bottom, wherein each adjacent pads is overlapped and connected, the detection pad uses a nitrocellulose film as a backing pad, the nitrocellulose film is provided with a transverse control line, a test line I, a test line II and a test line III, wherein the control line is coated with a rabbit anti-mouse polyclonal antibody, and the test line I, test line II and test line III are coated with aflatoxin B1-bovine serum albumin conjugate (AFB1-BSA), respectively: and the gold-labeled pad is transversely coated with a nanogold-labeled anti-aflatoxin B1 monoclonal antibody.