Abstract: A negative electrode plate includes a negative electrode active material layer. The negative electrode active material layer includes a negative electrode active substance and lithium-philic nanoparticles capable of alloying with lithium. A secondary battery includes a positive electrode plate, the negative electrode plate, and a separator provided between the positive electrode plate and the negative electrode plate.

Abstract: The present invention provides a crystalline form of a nucleoside compound. The crystalline form is ATV014 crystalline form I, which has good solubility and thermal stability, and better bioavailability and dissolution profile in specific formulations. The good permeability and thermal stability of the crystalline form make it suitable for use in specific pharmaceutical formulations.

Abstract: The technology provides a rich attention mechanism for structured information extraction of web pages and other electronic documents. An input layer of a model obtains system, information associated with the document, including field tokens representing respective fields to be extracted from the document, structured document type tokens associated, and text tokens from a text sequence in the document. An encoder connects the field tokens, the S type tokens and the text tokens according to a set of different attention patterns. The encoder generates an overall token representation based on the set of different attention patterns. An output layer of the model extracts a final text span for the each of the respective fields from the set of text tokens. The extracted final text span for each of the respective fields is stored in memory, and can be produced in response to a search query, analytics evaluation or other request.

Abstract: Disclosed is a microscopic comparison and experimental verification method for the wettability of similar surfactants on coal dust, comprising: collecting a coal sample on site from a mining area and analyzing the coal sample by infrared spectroscopy and nuclear magnetic resonance spectroscopy to obtain information on functional groups and carbon structure of coal molecules; S2: constructing a surfactant-coal molecule electrostatic interaction model and analyzing an orbital energy difference and an electrostatic potential difference between surfactant molecules and coal molecules, etc. S6. The invention provides a simple and effective idea for the selection of surfactants.

Abstract: A signal latching circuit includes a controller, a latch, and a first reset apparatus. The controller is electrically connected to both the latch and the first reset apparatus, and the latch is configured to be electrically connected to a switch on a charging path and/or a discharging path. The controller is configured to transmit a first signal to the latch and transmit a second signal to the first reset apparatus, where the first signal is used to control the switch to turn on, and the second signal is used to indicate that the controller is in a working state. The first reset apparatus is configured to transmit a first reset signal to the controller in response to not receiving the second signal within a first duration. The latch is configured to latch the first signal during a reset period of the controller.

Abstract: A switch circuit includes: a power supply; a first switch, where a first terminal of the first switch is electrically connected to the power supply; an isolation driving module, where a second terminal of the first switch is electrically connected to an input terminal of the isolation driving module, and the power supply is configured to supply power to the isolation driving module via the first switch; and a second switch, where a control terminal of the second switch is electrically connected to an output terminal of the isolation driving module, and the second switch is configured to turn on or off in response to an output signal of the isolation driving module. The second switch is turned on in response to the first switch being triggered under a first condition; and/or the second switch is turned off in response to the first switch being triggered under a second condition.

Abstract: An electrochemical apparatus includes a battery management system, a battery unit, and a switch unit. The switch unit is electrically connected between the battery management system and the battery unit. The battery management system is configured to obtain a state of charge of the battery unit; and under a condition that the state of charge is less than a preset threshold and the electrochemical apparatus has not obtained a charging current transmitted by an external charging device, the battery management system outputs a first signal to the switch unit, and the switch unit switches off an electrical connection between the battery unit and the battery management system according to the first signal.