Abstract: The present invention discloses a extra thick hot rolled H section steel and a production method therefor. The extra thick hot rolled H section steel contains, by mass, the following chemical components: 0.04-0.11% of C, 0.10-0.40% of Si, 0.40-1.00% of Mn, 0.40-1.00% of Cr, 0.10-0.40% of Cu, 0.020-0.060% of Nb, 0.040-0.100% of V, 0.010-0.025% of Ti, 0.010-0.030% of Al, 0.0060-0.0120% of N, not more than 0.015% of P, not more than 0.005% of S, not more than 0.0060% of O, and the balance Fe and trace residual elements, wherein 0.090%?Nb+V+Ti?0.170%, 6.5?(V+Ti)/N?10.5, and 0.30%?CEV?0.48%. The extra thick hot rolled H section steel has a flange thickness of 90 mm-150 mm, has excellent comprehensive mechanical properties, and can well meet the needs for heavy supporting structural parts of high-rise buildings, large squares, bridge structures, etc.

Abstract: An off-line cleaning apparatus for a painting machine (6) mainly comprises a body (16), and a solvent tank (1), a solvent pipe (2) a compressed air pipe (3), a main cleaning pipe (4), and a test pipe (11) arranged inside the body (16). The solvent tank (1) communicates with the main cleaning pipe (4) via the solvent pipe (2) in which a conveying pump (10) is provided. The compressed air pipe (3) communicates with the main cleaning pipe (4) so as to introduce compressed air into the main cleaning pipe (4). The main cleaning pipe (4) is provided with first branch cleaning pipes (4.1) and a second branch cleaning pipe (4.2). On the basis of the above-described structures, the off-line cleaning apparatus is able to thoroughly clean mixer pipes (5) and the painting machine (6), and ensures painting quality of vehicle bumpers.

Abstract: The invention provides methods and compositions for the repair or regeneration of osteochondral tissue. The methods and compositions provide an effective amount of isolated differentiable human Very Small Embryonic Like Stem Cells (hVSELs) sufficient for regeneration or repair of an osteochondral tissue. The compositions can be administered directly to the tissue or administered systemically.