Disclosed is a system and method for querying and recovering circuit group state in a switching system. Embodiments of this invention provide bandwidth-efficient and low-latency ARQ for both variable and constant bit-rate audio and video streams. A first ceramic ring is mounted to the first surface of the flange by a first braze joint and a second ceramic ring is mounted to the second surface of the flange by a second braze joint. Methods of making the nanodiscs are also provided. Furthermore, a the method for the preparation of this type of radioactive liposomes is described, as well as use of the system and a kit for preparing the system. The invention thus relates to the plants, seeds and tissue cultures of the variety CH863845, and to methods for producing a corn plant produced by crossing a corn plant of variety CH863845 with itself or with another corn plant, such as a plant of another variety.