33results about How to "Avoid the possibility of leakage" patented technology

One or more embodiments of this specification provide a blockchain-based logistics distribution method, system and device, the blockchain includes a plurality of node devices corresponding to the logistics delivery network and the logistics distribution network, and the method includes : the logistics delivery network receives logistics information, the logistics information includes user receiving address information, and the logistics information is encrypted using a key related to the public key of the distribution network to obtain the encrypted logistics information, wherein the The distribution network is a distribution network determined according to the user's receiving address information, and sends the encrypted logistics information to the distributed ledger of the blockchain; Obtaining the encrypted logistics information, using a key related to the private key of the distribution network to decrypt the encrypted logistics information to obtain the logistics information, and delivering based on the logistics information.

The invention discloses a low-temperature adsorbing agent device for a cryogenic pressure container and a production process of the low-temperature adsorbing agent device. The cryogenic pressure container comprises an inner container and an outer container, wherein a process manhole is formed in the middle-lower part of an end enclosure of the inner container, a charging hole corresponding to the process manhole is formed in an end enclosure of the outer container, the low-temperature adsorbing agent device comprises an adsorbing agent cylinder body, wherein the adsorbing agent cylinder body is provided with an upper-part cylinder body section and a lower-part cylinder body section which are equal in inner diameters and different in outer diameters, an end enclosure of the cylinder body is smoothly welded at the open end part of the upper-part cylinder body section, a sieve plate device is welded at the inner side of the open end part of the lower-part cylinder body section, and the outer side of the open end part of the lower-part cylinder body section is welded on the process manhole. According to the low-temperature adsorbing agent device, by increasing the through-flow area, the efficiency of a low-temperature adsorbing agent is enhanced and improved; by improving the structure, the structure stress condition is improved, the hidden danger of the welding quality is eliminated, and the safety of the pressure container is improved; by improving the position arrangement, the operating condition is improved, and the labor intensity is lightened.

The invention discloses a testing device capable of testing multiangle permeability coefficients of a bedded gravel soil mass. The testing device comprises a supporting system, an upstream water supply device, a permeability apparatus, a downstream liquid collecting device and a data acquisition system, wherein the supporting system is used for controlling an included angle between a sample chamber in the permeability apparatus and a horizontal direction; the upstream water supply device connected with the permeability apparatus is used for a saturated sample and is also used for providing permeable liquid required by a permeability test; the downstream liquid collecting device connected with the permeability apparatus is used for collecting liquid permeated from the sample chamber; and the data acquisition system is used for transmitting acquired data to a computer for calculating a permeability coefficient. According to the testing device disclosed by the invention, the same sample can be repeatedly used for conducting the permeability test for multiple time to obtain permeability coefficients of the sample at different angles, so that difference between different samples in permeability is avoided, and the multiangle permeability coefficients of the soil mass are obtained more efficiently and accurately.

This application relates to an anti-quantum computing cloud storage system based on the alliance chain, which is implemented between members of the alliance chain communicating with each other. The alliance members include User and a plurality of Endorser, Orderer and Committer that provide corresponding services. It is characterized in that, All parties are equipped with key cards, and all key cards store their own private keys, public key pools and system management public keys; the public key pool stores public keys corresponding to each of the alliance members unit, the public key unit stores public key random numbers, and the anti-quantum computing cloud storage method includes implementing query files based on the alliance chain, and correspondingly transmitting files according to the query results. upload and download. By using the alliance chain for distributed generation and storage of keys, the security of file storage is further improved.