Resin Impregnation Technique for Bulk Superconductors.

The application of a resin impregnation technique to dentin using a vacuum

Background: There is a technique in the industry called resin procedures like resin coating. For example, epoxy resin is injected to repair cracks in concrete of 0.2 mm or larger. In addition, a casting product can be strengthened when resin is injected to fill in a blowhole. A vacuum can be utilized to allow the resin to penetrate into every corner. In this study, we investigate whether bondin...

A Novel Technique for Bulk-Fill Resin-Based Restorations: Achieving Function and Esthetics in Posterior Teeth

Advances in the mechanical properties of composite resins have allowed for their use in posterior teeth. Conventional resins have several problems associated with polymerization shrinkage stress. The development of "bulk-fill" resins has allowed for their use in single increments up to depths of 4 mm, with very low polymerization shrinkage stress. Nevertheless, differences in anatomy and the de...

Resin impregnation of cellulose nanofibril films facilitated by water swelling

Flexible composite films were produced by impregnating aqueous phenol formaldehyde (PF) resin into water-swollen cellulose nanofibril (CNF) films. CNF films were prepared using a pressurized filtration method in combination with freeze drying. The freeze-dried films were swollen with water then impregnated with PF resin by soaking in aqueous resin solutions of varying concentrations. Small amou...

A rapid silver impregnation technique for oligodendrocytes, microglia, and astrocytes.

The London field in bulk layered superconductors

In a composite superconductor in uniform rotation, the London field strength at equilibrium is given by the usual expression BL = 2mω/e; here m corresponds to the bare electron mass, although the effective mass m can be different in different layers. In the presence of strong angular accelerations, however, transient phases and differences in m can become relevant. In particular, if the layers ...