Some embodiments described here concern a method for melting metal material in an electric arc furnace, which includes a step of loading solid metal material into the electric furnace, a step of powering the electric furnace and of generating an electric arc between at least one electrode and the metal material, and a step of melting the solid metal material to obtain molten material. Some embodiments described here concern an apparatus for melting metal material including an electric arc furnace and an electric power supply apparatus suitable to power the electric furnace.

Some embodiments described here concern a method for melting metal material in an electric arc furnace, which includes a step of loading solid metal material into the electric furnace, a step of powering the electric furnace and of generating an electric arc between at least one electrode and the metal material, and a step of melting the solid metal material to obtain molten material. Some embodiments described here concern an apparatus for melting metal material including an electric arc furnace and an electric power supply apparatus suitable to power the electric furnace.

This electric furnace includes one or more upper electrodes, one or more bottom-blowing tuyeres, a mechanical stirrer equipped with an impeller, and a charging device which injects an iron oxide-containing iron raw material.

A control system includes a vision system including an imaging device and a VAR monitoring system configured to determine a power adjustment phase of the VAR process based on the images from the vision system and a process parameter. The VAR monitoring system includes a vision analysis module configured to analyze the images from the vision system to detect a melt marker based on a remelt image process model, and a prediction module configured to predict an operational characteristic of the VAR process that is associated with the power adjustment relative to a melt marker location and a remelt prediction model. The VAR monitoring system is configured to initiate the power adjustment phase in response to the melt marker satisfying a predetermined melt marker condition, the operational characteristic of the VAR process satisfying a predetermined operational condition, or a combination thereof.

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.

In various embodiments, wire composed at least partially of arc-melted refractory metal material is utilized to fabricate three-dimensional parts by additive manufacturing.

In various embodiments, wire composed at least partially of arc-melted refractory metal material is utilized to fabricate three-dimensional parts by additive manufacturing.

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.