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The steel box beam in the Gulf Bridge adopts huge segment lifting construction method, with steel tube falsework as a temporary bridge pier. In this paper, established the finite element model of the steel tube falsework, determined the relevant calculation parameters according to the applicable bridge codes, calculated working conditions and the load, and analyzed the stability of the falsework....
Somatic hypermutation in rearranged immunoglobulin variable genes occurs in a 2 kb region of DNA that is delimited on the 5 side by the promoter and on the 3 side by intron DNA. To identify sequence features that activate the mutation mechanism, we increased the distance between the promoter and the leader region to test whether the spacing of these elements was important. The promoter was separated...
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