Dynamic Response of CFRP Reinforced Steel Beams Subjected to Impact Action Based on FBG Sensing Technology.

The in-situ health condition of carbon fiber reinforced polymer (CFRP) reinforced structures has become an important topic, which can reflect the structural performance of the retrofitted structures and judge the design theory. An optical fiber-based structural health monitoring technique is thus suggested. To check the effectiveness of the proposed method, experimental testing on smart CFRP reinforced steel beams under impact action has been performed, and the dynamic response of the structure has been measured by the packaged FBG sensors attached to the surface of the beam and the FBG sensors inserted in the CFRP plates.

Suppression of colorectal tumorigenesis by recombinant enterotoxin-2 .

Aim: To evaluate the impact of recombinant enterotoxin-2 (BFT-2, or Fragilysin) on colorectal tumorigenesis in mice induced by azoxymethane/dextran sulfate sodium (AOM/DSS).

Methods: Recombinant proBFT-2 was expressed in strain Rosetta (DE3) and BFT-2 was obtained and tested for its biological activity colorectal adenocarcinoma cell strains SW-480. Seventy C57BL/6J mice were randomly divided into a blank (BC; = 10), model (AD; = 20), model + low-dose toxin (ADLT; = 20, 10 μg), and a model + high-dose toxin (ADHT; = 20, 20 μg) group.