Abstract: Isolated polynucleotides and polypeptides, and recombinant DNA constructs are useful for conferring improved drought tolerance and yield. Compositions (such as plants or seeds) comprise these recombinant DNA constructs; and methods utilize these recombinant DNA constructs. The recombinant DNA constructs comprise a polynucleotide operably linked to a promoter that is functional in a plant, wherein said polynucleotides encode drought tolerance polypeptides.

Abstract: Disclosed are a method for updating data of a refrigerator freshness reservation model, a device and a storage medium. The method includes: S1, collecting refrigerator information of a plurality of users, wherein the refrigerator information of each user includes an item identifier corresponding to each of stored items in a refrigerator, and a usage frequency; S2, performing statistical computation on the refrigerator information to acquire a mean and a variance of usage frequencies corresponding to each food identifier; and S3, screening the refrigerator information based on the acquired mean and variance. In the present invention, uploaded data are automatically screened in an optimizing manner by mutual cooperation between the means and the variances, such that the uploaded data can be filtered, thereby maintaining the calculation accuracy while reducing the pressure on a server.

Abstract: A burner comprising a base cup, an annular flame splitter, and a flame cover. The base cup comprises an air inlet channel and two nozzles in communication with the air inlet channel and arranged upwards. The annular flame splitter arranged on the base cup comprises two Venturi tubes respectively arranged opposite the two nozzles. The annular flame splitter is separated from the base cup to form a gap, thus allowing primary air to enter the two Venturi tubes from the gap to be mixed with a fuel gas sprayed into the two Venturi tubes by the two nozzles to form a gaseous mixture. Groove openings are formed on the top of the annular flame splitter in communication with the mixing cavity. The flame cover covers the mixing cavity and limits the groove openings to define the outlet for the gaseous mixture, thus forming a flame ring.

Abstract: A burner comprising a base cup, an annular flame splitter, and a flame cover. The base cup comprises an air inlet channel) and two nozzles in communication with the air inlet channel and arranged upwards. The annular flame splitter arranged on the base cup comprises two Venturi tubes respectively arranged opposite the two nozzles. The annular flame splitter is separated from the base cup to form a gap, thus allowing primary air to enter the two Venturi tubes from the gap to be mixed with a fuel gas sprayed into the two Venturi tubes by the two nozzles to form a gaseous mixture. Groove openings are formed on the top of the annular flame splitter in communication with the mixing cavity. The flame cover covers the mixing cavity and limits the groove openings to define the outlet for the gaseous mixture, thus forming a flame ring.