141results about How to "Maintain purity" patented technology

This invention relates to a vapor or liquid phase reagent dispensing apparatus comprising:a vessel which comprises a removable top wall member, a sidewall member and a bottom wall member configured to form an internal vessel compartment to hold a source chemical up to a fill level and to additionally define an inner gas volume above the fill level;said sidewall member having a protuberance that extends into the internal vessel compartment adjacent to the top wall member;said top wall member and said sidewall member having opposing flat surfaces, wherein the opposing flat surfaces are optionally in contact with one another;fastening means for securing said top wall member to said sidewall member through the opposing flat surfaces that are optionally in contact with one another;said top wall member and said protuberance having opposing flat surfaces, wherein the opposing flat surfaces are not in contact with one another and at least a portion of the opposing flat surfaces are hardened; anda metal seal aligned and in contact with the hardened opposing flat surfaces of said top wall member and said protuberance;wherein said hardened opposing flat surfaces of said top wall member and said protuberance have a hardness greater than the hardness of said metal seal. The dispensing apparatus may be used for dispensing of reagents such as precursors for deposition of materials in the manufacture of semiconductor materials and devices.

The invention is a method of handling groups of services where the makeup of the groups can be determined and changed while the application is running. In one embodiment a group of services switches from peer mode to coordinator cohort mode to perform a task and then switches back. This is mainly accomplished through a group proxy, which is generated at run time, and which handles interactions with groups of services on behalf of one or more clients. The group proxy, buffers calls from a client to a group when the group is unavailable because it is in transition. When the transition is complete the group proxy transmits the stored client commands to the group.

Methods and composition for maintenance of cardiomyocytes are provided. For example, in certain aspects methods including culturing the cardiomyocytes in a medium essentially free of serum or containing dialyzed serum to maintain long-term purity. In further aspects, methods for modulation of cardiomyocytes may be provided.