Abstract: A signature method includes a client that receives a to-be-signed first message from a cloud service node. The client sends a first parameter set to a server. The server sends a second parameter set to the client. The first parameter set is generated based on the first message, a 1st triplet, a first random number, identification information of the client, and a first private key segment. The second parameter set is generated based on the first parameter set, a 2nd triplet, a second random number, and a second private key segment. The second parameter set includes a first signature component. The client generates a second signature component based on the 1st triplet and the second parameter set, and sends a digital signature of the first message to the cloud service node, where the digital signature includes the first signature component and the second signature component.

Abstract: A high bay light with linkage adjustment of an angle of modules is disclosed, including a mounting shaft and a plurality of linkage lamp bodies in an annular array, where a mounting member is connected to a top of the mounting shaft, and a rotating shaft is connected to an inner end of the linkage lamp body; a plurality of rotating grooves are arranged on a circumference of a lower end of the mounting shaft, and the plurality of linkage lamp bodies are hinged to the mounting shaft through the cooperation between the rotating shafts and the rotating grooves; a linkage cover is slideably provided outside the mounting shaft, and an outer side of an upper end of the linkage lamp body is connected to the linkage cover through a connecting shaft.

Abstract: Provided is an efficient combined nano iron suspension fertilizer. The suspension fertilizer efficient combined nano iron is prepared from ingredients including, in mass percentage: 10.0% to 20.0% of FeSO4; 0.5% to 2.0% of zero-valent iron nanoparticles (nZVI); 5.0% to 10.0% of magnetic iron oxide nanoparticles (Fe3O4-NPs); 30.0% to 50.0% of citric acid; 1.0% to 5.0% of a dispersant 5040; 0.2% to 1.0% of xanthan gum; 1.0% to 5.0% of magnesium aluminum silicate; and water as a balance.

Abstract: A high bay light with linkage adjustment of an angle of modules is disclosed, including a mounting shaft and a plurality of linkage lamp bodies in an annular array, where a mounting member is connected to a top of the mounting shaft, and a rotating shaft is connected to an inner end of the linkage lamp body; a plurality of rotating grooves are arranged on a circumference of a lower end of the mounting shaft, and the plurality of linkage lamp bodies are hinged to the mounting shaft through the cooperation between the rotating shafts and the rotating grooves; a linkage cover is slideably provided outside the mounting shaft, and an outer side of an upper end of the linkage lamp body is connected to the linkage cover through a connecting shaft.

Abstract: including, Acknowledgment information sent by a receive end to a transmit end includes a blacklist, or includes a blacklist and a whitelist. In other words, the receive end notifies, in time each time, the transmit end of information of a plurality of data packets that have not been received. In this way, the transmit end can retransmit the data packets to the receive end in time. The receive end indicates the whitelist to the transmit end, so that the transmit end can learn, in time, of a data packet newly received by the receive end. This avoids a bandwidth waste caused by invalid retransmission. In each round of retransmission, the transmit end retransmits a retransmission packet a plurality of times, and time for retransmission is inconsecutive. This avoids a retransmission failure caused by consecutive packet losses, and improves a retransmission success rate.

Abstract: The general object of the present invention is to provide a method for determining and displaying the relative changes of elastic moduli and that of density of geologic formations and for utilizing these relative changes and plottings for gas/oil exploration, especially for direct gas and light oil detection. The said relative changes of elastic moduli are the relative change of Lame constant .DELTA..lambda./(.lambda.+2.mu.), the relative change of shear modulus .DELTA..mu./(.lambda.+2.mu.) and/or .DELTA..mu./[.kappa.+(4/3).mu.], the relative change of bulk modulus .DELTA..kappa./[.kappa.+(4/3).mu.]; and the relative change of density is .DELTA..rho./.rho..