An electrode seal for use in a metallurgical furnace, the furnace comprising a furnace space heated by electrodes extending through an aperture into the furnace space. The electrode seal comprises at least three sets of shoes in consecutive lateral contact, each shoe having a biasing member for biasing a surface of the shoe toward one of the electrodes thereby allowing the one electrode to longitudinally move within the electrode seal while providing electrical insulation between the electrode and the aperture.

A casting system, apparatus, and method. The casting system can include an energy source and a hearth, which can have a tapered cavity. The tapered cavity can have a first end portion and a second end portion, and the tapered cavity can narrow between the first and second end portions. Further, the tapered cavity can have an inlet at the first end portion that defines an inlet capacity, and one or more outlets at the second end portion that define an outlet capacity. Where the cavity has a single outlet, the outlet capacity can be less than the inlet capacity. Where the cavity has multiple outlets, the combined outlet capacity can match the inlet capacity. Further, the cross-sectional area of the tapered cavity near the inlet can be similar to the cross-sectional area of the inlet.

Immunogenic compositions comprising hemagglutinin (HA) variants and/or neuraminidasc (NA) variants, which may be contained in an influenza A virus, and uses thereof for eliciting immune responses against influenza A virus.

Immunogenic compositions comprising hemagglutinin (HA) variants and/or neuraminidasc (NA) variants, which may be contained in an influenza A virus, and uses thereof for eliciting immune responses against influenza A virus.

A refractory layer structure includes a layer of refractory blocks locked by each other in a tessellated pattern.

A refractory layer structure includes a layer of refractory blocks locked by each other in a tessellated pattern.

Described herein are photonic furnaces and methods of using the same to produce metal products from a precursor material.

Described herein are photonic furnaces and methods of using the same to produce metal products from a precursor material.

Immunogenic compositions comprising hemagglutinin (HA) variants and/or neuraminidase (NA) variants, which may be contained in an influenza A virus, and uses thereof for eliciting immune responses against influenza A virus.

Immunogenic compositions comprising hemagglutinin (HA) variants and/or neuraminidase (NA) variants, which may be contained in an influenza A virus, and uses thereof for eliciting immune responses against influenza A virus.