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A spontaneous multilayer deposition approach for presenting therapeutic proteins onto pancreatic islet surfaces, using a heparin polyaldehyde and glycol chitosan alternating layering scheme, has been developed to enable the nanoscale engineering of a microenvironment for transplanted cells. The nanocoating incorporating α1-antitrypsin, an anti-inflammatory protein, exhibited effective anti-coagulant activities in vitro.

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Sweep Frequency Response Analysis (SFRA) is an established tool for determining the core deformations, bulk winding movement relative to each other, open circuits and short circuit turns, residual magnetism, deformation within the main transformer winding, axial shift of winding etc. This test is carried out on the transformer without actual opening it and is an off line test. This paper explains the fundamental studies of SFRA measurement on basic electrical circuits, which can be extended for studying the mechanical integrity of a transformer after short circuit fault, transportation etc.

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