Abstract: The present disclosure provides a blockchain-based green power certification method, apparatus, and system, to pre-process obtained basic data to obtain proof-of-existence data, certify the proof-of-existence data from a production side and a consumption side by using a certification chain and a token chain respectively, and obtain a green power attribute certificate and a green power consumption label if the certification is passed; generate a unique digital identifier for the green power attribute certificate and the green power consumption label separately based on a non-fungible token (NFT), which realizes non-interchangeability, indivisibility, and other characteristics of the certificate and the identifier; and supervise and verify a certification process by using a chain of custody, and generate a corresponding unique blockchain identifier for the certification chain, the token chain, and the chain of custody separately through multi-chain interaction, so as to realize data interaction between blockcha

Abstract: A test device for rigid-flexible characteristics of a rigid-flexible transition overhead conductor rail, includes a movable vehicle moved in a length extending direction of the overhead conductor rail. A telescopic mechanism for providing lifting force for the overhead conductor rail is mounted on the movable vehicle and stretches out and draws back in a vertical direction, and a conversion plate is connected to a top end of the telescopic mechanism and synchronously moved in the vertical direction therewith. A sliding assembly is mounted at a top of the conversion plate and slides along the overhead conductor rail with the movable vehicle. The overhead conductor rail is located over the sliding assembly which abuts against a bottom wall of the overhead conductor rail. A force sensor is arranged between the telescopic mechanism and the conversion plate. A displacement detection mechanism is arranged on the conversion plate.

Abstract: The present invention relates to a composition for treating keratin fibers such as hair, comprising: (a) at least one hydroxy acid or salt thereof; (b) at least one cationic polyamino acid; and (c) water, wherein the amount of the (b) cationic polyamino acid(s) is 0.2% by weight or more, preferably 0.3% by weight or more, more preferably 0.5% by weight or more, and even more preferably 0.8% by weight or more, relative to the total weight of the composition. The present invention can smoothen keratin fibers.

Abstract: A distributed processing method based on a consistency protocol is provided. The method includes: transmitting a decree prepare request including a first decree number, the decree prepare request requesting other nodes to promise to no longer accept a fast write operation initiated by a leader node whose leader number is less than the first decree number, the first decree number representing a leader number of a current node, and the leader number representing a number of a decree at which the current node that becomes a leader node is located; and in response to receiving decree promises from at least a preset quantity of nodes among the other nodes, enabling the fast write operation from a subsequent decree number of a second decree number determined based on the decree promises, each of the decree promises including the first decree number.

Abstract: The present disclosure relates to a two-dimensional (2D) code display method, apparatus, device, and medium. The 2D code display method includes: receiving a 2D code display operation for triggering display of a 2D code image corresponding to a target content, wherein the target content belongs to a first application; in response to the 2D code display operation, displaying the 2D code image including a first primary positioning point and a second primary positioning point that are arranged to overlap, wherein the first primary positioning point is above the second primary positioning point and has a preset color, and wherein the second primary positioning point has a representative color of the first application.

Abstract: A prestress-free self-centering energy-dissipative tension-only brace, including a self-centering mechanism, an energy dissipation mechanism, a force-limiting energy-dissipative mechanism, a high strength steel cable, and a sleeve. The self-centering mechanism includes a sliding end plate, a spring, and a connection rod. One end of the spring is connected and fixed to the inner wall of the sleeve, and the other end of the spring is connected with the sliding end plate. One end of the connection rod is anchored at the center of the sliding end plate, and the other end of the connection rod passes through a fixed end of the spring. The energy dissipation mechanism includes rotating shafts, rotating wheels, friction plates, chains, and a cross-shaped connecting piece.

Abstract: A prestress-free self-centering energy-dissipative tension-only brace, including a self-centering mechanism, an energy dissipation mechanism, a force-limiting energy-dissipative mechanism, a high strength steel cable, and a sleeve. The self-centering mechanism includes a sliding end plate, a spring, and a connection rod. One end of the spring is connected and fixed to the inner wall of the sleeve, and the other end of the spring is connected with the sliding end plate. One end of the connection rod is anchored at the center of the sliding end plate, and the other end of the connection rod passes through a fixed end of the spring. The energy dissipation mechanism includes rotating shafts, rotating wheels, friction plates, chains, and a cross-shaped connecting piece.

Abstract: A distributed processing method based on a consistency protocol is provided. The method includes: transmitting a decree prepare request including a first decree number, the decree prepare request requesting other nodes to promise to no longer accept a fast write operation initiated by a leader node whose leader number is less than the first decree number, the first decree number representing a leader number of a current node, and the leader number representing a number of a decree at which the current node that becomes a leader node is located; and in response to receiving decree promises from at least a preset quantity of nodes among the other nodes, enabling the fast write operation from a subsequent decree number of a second decree number determined based on the decree promises, each of the decree promises including the first decree number.