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Experimental and numerical study on the mechanical performance of curved steel–concrete composite box girders is reported in this research. First, this research establishes a theoretical model for curved composite girders with 11° of freedoms (DOFs) for each node. The DOFs include the longitudinal displacement, transverse displacement, deflection, torsion angle, warping angle, and interface biaxial...
To understand the regulation of enzymes that carry out immunoglobulin heavy chain class switch recombination, we have assayed recombination of extrachromosomal substrates carrying switch region sequences in cell lines representing different stages of lymphoid cell development. Both pre-B and mature B cell lines supported switch substrate recombination, but B cell lines derived from later stages of...
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