Abstract: The present disclosure relates to electro-conduction devices and methods for submerged arc welding of straight-seam steel pipes and in particular to a lateral electro-conduction device and method for multi-wire submerged arc inner/outer welding of a straight-seam steel pipe. The present disclosure aims to overcome the problem of poor closing of the electromagnetic field resulting from the existing negative-pole electro-conduction mechanism and the problem of unstable welding process resulting from bending deformation in the steel pipe welding process. The device includes: a floating surface contact electro-conduction device, capable of forming a surface contact with an outer surface of the straight-seam steel pipe; a lateral electro-conduction brush device, including multiple electro-conduction brushes and electrically connected with the floating surface contact electro-conduction device; a lateral electro-conduction metal plate.

Abstract: The objective of the invention is to provide a novel oligosaccharide, which can be used for producing a biantennary glycan having an ?2,6-sialic acid structure at a non-reducing end, a method for production thereof, production intermediates thereof and a method for producing the intermediates, as well as a novel oligosaccharide, which is a biantennary glycan having an ?2,6-sialic acid structure at a non-reducing end, a method for producing the oligosaccharide, intermediates thereof, and a method for producing the intermediates. Provided are a novel oligosaccharide represented by Formula A-13 or D-13: a method for producing the oligosaccharide represented by Formula A-13 or Formula D-13 shown in, for example, FIG. 1 or FIG. 3, intermediates thereof and a method for producing the intermediates.

Abstract: The present disclosure relates to electro-conduction devices and methods for submerged arc welding of straight-seam steel pipes and in particular to a lateral electro-conduction device and method for multi-wire submerged arc inner/outer welding of a straight-seam steel pipe. The present disclosure aims to overcome the problem of poor closing of the electromagnetic field resulting from the existing negative-pole electro-conduction mechanism and the problem of unstable welding process resulting from bending deformation in the steel pipe welding process.

Abstract: The disclosed apparatus comprises a computing array comprising a plurality of computing modules, wherein each computing module comprises at least one storage cell, a reset switch, and a capacitor; the storage cell comprises at least one storage switch, and the storage switch comprises a storage control terminal, a storage detection terminal, and a storage terminal, the storage control terminal to receive a storage state voltage to adjust the impedance characteristic between the storage detection terminal and the storage terminal; the reset switch comprises a reset control terminal, a reset detection terminal, and a reset terminal, the reset control terminal to receive a reset voltage and the reset terminal is used to receive a reset state voltage. The disclosed apparatus also comprises a control module, which is used to control the computing array to perform at least one of a store operation, a read operation, and a compute operation.