The hydroforming technology can realize overall forming of large storage tank’s bottom, but the quality is affected by many technological parameters. In view wrinkling and cracking defects integral bottom in hydroforming, a multi-objective optimization model established for process parameters including pre-expansion pressure, hydraulic blank holder force, fillet radius holder. Based on finite e...

In this study, functional coatings with N-halamine structure were formed on cotton fabrics by dopamine (DA) auto-deposition and DA/Polyethyleneimine (PEI) covalent co-deposition, respectively. SEM、UV-Vis XPS had confirmed the deposition of DA DA/ polydopamine (PDA) fabrics. When mass ratio DA/PEI was 1:1.5, a uniform coating formed. XRD indicated that oxidative sodium hypochlorite solution did ...

Abstract This article analyses Vanity Fair's reference to Meghan Markle's biracial identity as a ‘wrinkle’ part of broader tendency discuss that in terms dynamic crisis and resolution. The contrasts Andrew Morton's biography, Meghan: A Hollywood Princess (2018) with two texts by Meghan, 2015 essay for Elle magazine, her guest edited issue British Vogue (2019). All endeavour manage the Meghan's ...

We generalize the basic enhançon solution of Johnson, Peet and Polchinski [1] by constructing solutions without spherical symmetry. A careful consideration of boundary conditions at the enhançon surface indicates that the interior of the supergravity solution is still flat space in the general case. We provide some explicit analytic solutions where the enhançon locus is a prolate or oblate sphe...

OBJECTIVE To examine whether earthworms of Eisenia fetida, Lumbricus rubellus and Eudrilus eugeniae extracts have elastase, tyrosinase and matrix metalloproteinase-1 (MMP-1) inhibitory activity. METHODS The earthworms extract was screened for elastase, tyrosinase and MMP-1 inhibitory activity and compared with the positive controls. It was also evaluated for whitening and anti-wrinkle capacit...

The human finger is exquisitely sensitive in perceiving different materials, but the question remains as to what length scales are capable of being distinguished in active touch. We combine material science with psychophysics to manufacture and haptically explore a series of topographically patterned surfaces of controlled wavelength, but identical chemistry. Strain-induced surface wrinkling an...