Abstract: Provided are an electrokinetic device and method for in-situ leaching of uranium, belonging to the technical field of in-situ leaching of uranium. The electrokinetic device for in-situ leaching of uranium includes an injection well, a pumping well, a positive electrode, a negative electrode, leaching solution, and a direct current power supply. Uranium ore is provided between the injection well and the pumping well, the negative electrode is arranged in the injection well, and the positive electrode is arranged in the pumping well. The leaching solution is injected from the injection well, flows through the uranium ore, and then is pumped from the pumping well for uranium extraction. The direct current power supply is respectively connected to the positive electrode and the negative electrode, and is configured to apply direct current between the positive electrode and the negative electrode to promote the pooling of uranium-carrying ions towards the pumping well.

Abstract: A method and apparatus for processing a table, a device, a storage medium and a product. An implementation of the method comprise: receiving a content query request for a target table; acquiring a target tree structure of the target table according to the content query request; where, the target tree structure is obtained by performing absorbing processing and merging processing on at least one target cell in the target table; acquiring to-be-queried content in the content query request; and querying target content matching the to-be-queried content from the target tree structure.

Abstract: An embodiment of this application provides a method and apparatus for testing control software, and a computer-readable storage medium to reduce the time consumed in the simulation-based debugging and enhance efficiency. The method may include obtaining test information of a plurality of fault signals; and injecting, based on the test information of the plurality of fault signals, the plurality of fault signals into a simulation environment in sequence to obtain test results of the plurality of fault signals handled by the control software, where the simulation environment may be a simulation environment of a control object of the control software.

Abstract: A multi-source self-adaptive low-stress additive manufacturing apparatus including a multi-axis manipulator additive manufacturing system, a high-energy sound beam regulation system, a substrate and a self-adaptive additive manufacturing workbench. The multi-axis manipulator additive manufacturing system includes multi-axis manipulator(s), welding torch(es), manipulator controller(s) and a guide rail, where base(s) of the multi-axis manipulator(s) is connected with the guide rail, the welding torch(es) is held by distal end(s) of the multi-axis manipulator(s), the multi-axis manipulator(s) is controlled by the manipulator controller(s) to move the welding torch(es) to conduct low-stress additive manufacturing on the workpiece to be additive manufactured.

Abstract: The present application discloses a sensing signal receiving system and method. The system includes an interface module configured to receive a sensing signal, a narrowband frequency-selective module configured to determine a frequency-selective signal in the sensing signal according to a preset receive frequency, a high amplification module configured to amplify the received frequency-selective signal to obtain an amplified signal, and an in-phase comparison module configured to convert the amplified signal into a TTL standard signal. A frequency of the frequency-selective signal is the preset receive frequency or is a narrowband section including the preset receive frequency. The narrowband frequency-selective module is further configured to output the frequency-selective signal to the high amplification module.

Abstract: Provided are a method for calibrating sensors in a vending machine and a vending machine. input values of first input terminals and input values of second input terminals of sensors are determined through level 1 calibration and level 2 calibration, respectively, which may greatly increase the number of adjustable grades of the luminous intensity of an optical generator of each sensor, and may further greatly improve the success rate of calibration on the sensors.

Abstract: Disclosed are a vending machine and a method of detecting height of a storage column. The vending machine may determine whether a sensor squarely faces the front end surface of the level plate of a storage column by detecting the type of an output signal of the sensor. When the sensor squarely faces the front end surface of the level plate of the storage column, the height of the level plate of the storage column may be obtained based on a height difference between the sensor and the bearing surface of a bucket and the height of the bucket. Thus, according to the height of the level plate of the storage column, the bearing surface of the bucket and the upper edge of the front end surface of the level plate of the storage column lie in the same level when dispensing an item.

Abstract: Provided are a method for calibrating sensors in a vending machine and a vending machine. input values of first input terminals and input values of second input terminals of sensors are determined through level 1 calibration and level 2 calibration, respectively, which may greatly increase the number of adjustable grades of the luminous intensity of an optical generator of each sensor, and may further greatly improve the success rate of calibration on the sensors.

Abstract: Disclosed is a vending machine, including a cabinet, a bucket, a bucket drive mechanism, a first shutter mechanism, a second shutter mechanism, a controller and a storage column; a pickup port is arranged at the surface of the cabinet; the storage column stores the commodities; the bucket includes an inlet and an outlet; the inlet receives the commodity to be conveyed from the storage column, and the outlet is butted with the pickup port; the bucket drive mechanism drives the bucket to move in the cabinet; the first shutter mechanism blocks or opens the inlet; the second shutter mechanism blocks or opens the outlet; the controller controls the first shutter mechanism to open the inlet and the second shutter mechanism to block the outlet in the process of commodity to be conveyed entering the bucket. Further disclosed is a commodity conveying method.

Abstract: Disclosed is a vending machine, including a cabinet, a bucket, a bucket drive mechanism, a first shutter mechanism, a second shutter mechanism, a controller and a storage column; a pickup port is arranged at the surface of the cabinet; the storage column stores the commodities; the bucket includes an inlet and an outlet; the inlet receives the commodity to be conveyed from the storage column, and the outlet is butted with the pickup port; the bucket drive mechanism drives the bucket to move in the cabinet; the first shutter mechanism blocks or opens the inlet; the second shutter mechanism blocks or opens the outlet; the controller controls the first shutter mechanism to open the inlet and the second shutter mechanism to block the outlet in the process of commodity to be conveyed entering the bucket. Further disclosed is a commodity conveying method.

Abstract: Provided are a vending machine and a merchandise dispensing method thereof. A merchandise dispensing method comprising: driving the gate to move from a closed position to an open position and driving the receiving bin to rotate from a receiving position to a dispensing position in the case where a bucket containing the commodity for sale is located at a pickup port; when a baffle is inserted into the pickup port, the baffle and the gate move simultaneously, and the spacing between them is always less than or equal to a first preset value.

Abstract: A vending machine and an item dispensing method. The vending machine includes: a storage column used to store items; a bucket used to receive an item from the storage column; a first conveying mechanism disposed at the storage column and used to convey the item in the storage column to the bucket; a second conveying mechanism disposed at the bucket and used to convey the item from the storage column to the inside of the bucket; and a controller. The first and second conveying mechanisms are each electrically connected to the controller. The item dispensing method includes controlling the first conveying mechanism to convey an item to the bucket at a first preset speed and controlling the second conveying mechanism to convey the item to the inside of the bucket at a second preset speed, as the item is entering the bucket, the first preset speed being less than the second preset speed.

Abstract: A vending machine and an item dispensing method. The vending machine includes: a storage column used to store items; a bucket used to receive an item from the storage column; a first conveying mechanism disposed at the storage column and used to convey the item in the storage column to the bucket; a second conveying mechanism disposed at the bucket and used to convey the item from the storage column to the inside of the bucket; and a controller. The first and second conveying mechanisms are each electrically connected to the controller. The item dispensing method includes controlling the first conveying mechanism to convey an item to the bucket at a first preset speed and controlling the second conveying mechanism to convey the item to the inside of the bucket at a second preset speed, as the item is entering the bucket, the first preset speed being less than the second preset speed.

Abstract: Disclosed are a vending machine and a method of detecting height of a storage column. The vending machine may determine whether a sensor squarely faces the front end surface of the level plate of a storage column by detecting the type of an output signal of the sensor. When the sensor squarely faces the front end surface of the level plate of the storage column, the height of the level plate of the storage column may be obtained based on a height difference between the sensor and the bearing surface of a bucket and the height of the bucket. Thus, according to the height of the level plate of the storage column, the bearing surface of the bucket and the upper edge of the front end surface of the level plate of the storage column lie in the same level when dispensing an item.

Abstract: A roll-to-roll method for manufacturing 2D/3D grating switch membrane is performed in such a way that: Step 1 and Step 2 are simultaneously performed, then Step 3 is performed, and finally Step 4 is performed: Step 1, subjecting a concave grating facing down to rubbing and liquid crystal dropping; Step 2, uniformly coating a PI liquid onto a surface layer of a mirror-face metal roller, and performing self-hating and rubbing; Step 3, making the concave grating rubbed and dropped with liquid crystals in Step 1 and PI layer coated and directionally-rubbed on the mirror-face metal roller in Step 2 attached to each other, forming a grating membrane, and rotating and pre-baking the grating membrane with the mirror-face metal roller; Step 4, curing the attached and baked grating membrane by the UV curing means and after stripping, collecting and winding through the 2D/3D grating switch membrane collecting roller.

Abstract: A roll-to-roll method for manufacturing 2D/3D grating switch membrane is performed in such a way that: Step 1 and Step 2 are simultaneously performed, then Step 3 is performed, and finally Step 4 is performed: Step 1, subjecting a concave grating facing down to rubbing and liquid crystal dropping; Step 2, uniformly coating a PI liquid onto a surface layer of a mirror-face metal roller, and performing self-hating and rubbing; Step 3, making the concave grating rubbed and dropped with liquid crystals in Step 1 and PI layer coated and directionally-rubbed on the mirror-face metal roller in Step 2 attached to each other, forming a grating membrane, and rotating and pre-baking the grating membrane with the mirror-face metal roller; Step 4, curing the attached and baked grating membrane by the UV curing means and after stripping, collecting and winding through the 2D/3D grating switch membrane collecting roller.

Abstract: A distribution valve for a concrete pump, the concrete pump, a control method thereof and a concrete pump truck are provided. The distribution valve comprises a valve body (200) and a wear resistance plate (300). The valve body (200) comprises a first suction pipe (210) and a first pumping pipe (220), the rear end of the first suction pipe (210) is communicated with an outlet (401) of a material container (400) so as to communicate the material container (400) and a conveying cylinder. The rear end of the first pumping pipe (220) is rotatablely connected with a delivery line of the concrete pump so as to communicate the conveying cylinder and the delivery line. The valve body (200) can be switched between a first state and a secondary state under the driving of a drive mechanism (500).