Abstract: A method for quickly acquiring soil hydraulic properties in situ based on a ponded infiltration experiment is provided. The method adopts a novel derivation method, and is based on a Richards' equation and a Brooks-Corey model to derive an analytical solution that accurately describes one-dimensional infiltration into homogeneous soil under ponded conditions. The method, for the first time, provides a detailed description of a developing saturated zone in the soil water profile, which is the most vital infiltration characteristic during ponded infiltration. The method proposes an optimized estimation method for parameters based on an inverse process of the analytical solution. The method can quickly acquire soil hydraulic properties in situ field by measuring a cumulative infiltration amount and a length of a wetting front over time during one-dimensional ponded infiltration experiment through a time-domain reflectometer (TDR).

Abstract: A smart agricultural automatic feeding device includes a feeding box, a weighing part is disposed in the feeding box and connected with a top of the feeding box; a separating part is disposed below the weighing part and rotatably connected to an inner wall of the feeding box, a feed end of the separating part is connected with a discharge end of weighing part; a delivery part is disposed below the separating part and includes delivery tubes arranged in parallel, the delivery tubes are fixed to the inner wall of the feeding box, feed ends of the delivery tubes are connected to the discharge end of the separating part and configured to be arranged correspondingly to a fish pond; an air supply part is disposed outside the feeding box and connected to the delivery tubes through a pressurized part, the pressurized part is in transmission connection with the separating part.

Abstract: An open-ear Bluetooth® earphone includes an earphone body and a support frame. The support frame is configured to be plugged into a cavum concha of a wearer. The earphone body is provided with an audio source, and the support frame is installed on the earphone body and corresponds to the audio source. When in use, the support frame is configured to be firmly plugged into the cavum concha of the wearer to allow the earphone body to be worn on the ear of the wearer. The audio source corresponds to the ear canal of the wearer through the support frame, so that the sound emitted from the audio source is transmitted into the ear canal through the support frame. The audio source is directly opposite of the ear canal through the support frame to shorten the distance between the audio source and the ear canal.

Abstract: An open-ear earphone includes a housing, a chamber is provided inside the housing, a speaker is provided inside the chamber and divides the chamber into a front chamber and a rear chamber. The housing is provided with a first sound hole and a second sound hole. The front chamber is communicated to the outside through the first sound hole, and the rear chamber is communicated to the outside through the second sound hole. The rear chamber includes a first volume down chamber and a second volume down chamber communicated to the first volume down chamber, and the first volume down chamber is located between the speaker and the second volume down chamber. The sound wave in backward motion generated by the speaker is transmitted to the outside from the second sound hole after being reduced by the first volume down chamber and the second volume down chamber.

Abstract: The present disclosure provides a smart lock, including: a lock body and an unlocking structure; a Bluetooth communication module configured to receive a lock instruction or an unlock instruction based on Bluetooth communication; and one or more binding tags, each binding tag being associated with a Bluetooth address of the smart lock, wherein the unlocking structure is configured to lock or unlock the smart lock based on the lock instruction or the unlock instruction, or lock or unlock the smart lock based on an operation performed for the one or more binding tags. The present disclosure further provides a system and method for monitoring an object equipped with the smart lock.

Abstract: The present disclosure discloses methods, apparatus, and storage medium for processing blockchain-based data. The method includes: creating a first world state corresponding to an initial block; updating the first world state according to transactions in the initial block to obtain an initial update state, and performing processing of constructing a clean state tree on the initial update state based on a world state chain to obtain an updated first world state including a clean present world state tree; writing a first world state root corresponding to the clean present world state tree into the initial block to obtain a to-be-on-chained block, writing the to-be-on-chained block into a blockchain when the to-be-on-chained block is approved by consensus, committing the updated first world state to a latest on-chain world state step by step via the world state chain, and determining the updated first world state as a new consensus root world state.

Abstract: A data archiving method includes: finding, in local space when an archiving task for a target block header exists, current state trees of block headers, the current state trees including a current state tree that the target block header points to and a current state tree that a first block header before the target block header points to; reconstructing new state trees according to the found current state trees, node reuse information between the current state trees, and target state data corresponding to a second block header after the target block header; and archiving the current state trees stored in the local space to a target archiving server, and deleting the current state trees in the local space after successful archiving.

Abstract: A transaction transmitted by a user node in a blockchain network and transaction verification information corresponding to the to-be-verified transaction are acquired. The transaction verification information includes a state read set, a state write set, an initial transaction execution result, and a block identifier of a target block. A first block header of the target block includes the block identifier. A second block header is determined from a block header chain of a light node in the blockchain network. The state read set and the state write set are checked based on a first state snapshot in the second block header. The transaction service is executed to obtain a target transaction execution result corresponding to the transaction service and to-be-written state data. Legitimacy of the to-be-verified transaction is checked based on the initial transaction execution result, the target transaction execution result, the state write set, and the to-be-written state data.

Abstract: The present disclosure relates to the technical field of semiconductors, and proposes a semiconductor chip container and a fixture. The container is placed in a containing device with a chemical reagent, and the container includes a main body and partition plates, where the main body has an accommodating space; the partition plates are arranged in the accommodating space and divide the accommodating space into a plurality of independent accommodating chambers; the plurality of accommodating chambers are respectively used for placing a plurality of independent semiconductor chips; the main body is provided with first through holes; the first through holes are used for allowing the chemical reagent to enter the accommodating space; the main body and the partition plates are used for preventing the semiconductor chip from being separated from the corresponding accommodating chamber under the action of the chemical reagent.

Abstract: A Through-Silicon Via (TSV) product, a TSV sample, and a method for manufacturing the same are provided. The method includes operations as follows. A first metal layer is deposited on a bottom of each of TSVs, the first metal layer covering the bottom of the TSV. Pre-prepared adhesive is filled on an inner wall in a middle of each of TSVs of a to-be-processed sample. A second metal layer is deposited on a top of each of the TSVs, the second metal layer covering on the top of an opening of the TSV. A capping layer is deposited on the second metal layer, to obtain a preprocessed to-be-processed sample. The preprocessed to-be-processed sample is cut in a preset cutting manner by using a dual-beam Plasma Focused Ion Beam (PFIB), to form a TSV sample with a cross-section of each of the TSVs is exposed.

Abstract: The present disclosure discloses a sample fixation mechanism for a test with a nano-probe, an apparatus for a test with a nano-probe, and a sample test method. The sample fixation mechanism includes a base having a first assembly surface; a holder having a second assembly surface matched with the first assembly surface, wherein the holder further has a fixation surface opposite to the second assembly surface, and the fixation surface is configured to be adhered and fixed with the sample; a lock structure having a locked state and an unlocked state, wherein in the locked state, the lock structure is capable of fixing the holder relative to the base, and in the unlocked state, the holder may be removed from the base.

Abstract: A method for grinding the wafer includes: an initial wafer of which an edge has a test address is provided; a recombined water of which the test address is located in the middle is formed; a following circulation step is performed: a protective layer at least located above the test address is formed on an existing layer of the recombined water; the uncovered existing layer is grinded; the protective layer and the existing layer which is remaining are removed. It is determined whether the test address is exposed, if not, the next circulation step is performed.

Abstract: The present disclosure provides a smart lock, including: a lock body and an unlocking structure; a Bluetooth communication module configured to receive a lock instruction or an unlock instruction based on Bluetooth communication; and one or more binding tags, each binding tag being associated with a Bluetooth address of the smart lock, wherein the unlocking structure is configured to lock or unlock the smart lock based on the lock instruction or the unlock instruction, or lock or unlock the smart lock based on an operation performed for the one or more binding tags. The present disclosure further provides a system and method for monitoring an object equipped with the smart lock.