Abstract: A thermal management cabinet for electronic equipment such as servers, having an opening in the top and bottom of the cabinet. The cabinet extends between a raised access floor of a building carrying cooled air and a drop ceiling for venting heated air. The bottom opening of the cabinet is alignable with an opening in the access floor such that cool air can pass into the cabinet and can flow through the electronic component storage area to the top opening, which is alignable with an opening in the drop ceiling. The cabinet interior is separated into temperature zones comprising at least a cold zone supplied with air from the access floor and a hot zone for venting through the top opening. At least one baffle creates the temperature zones such that air is directed to flow from the cold zone through the electronic component storage area to the hot zone.

Abstract: A thermal management cabinet for electronic equipment such as servers, having an opening in the top and bottom of the cabinet. The cabinet extends between a raised access floor of a building carrying cooled air and a drop ceiling for venting heated air. The bottom opening of the cabinet is alignable with an opening in the access floor such that cool air can pass into the cabinet and can flow through the electronic component storage area to the top opening, which is alignable with an opening in the drop ceiling. The cabinet interior is separated into temperature zones comprising at least a cold zone supplied with air from the access floor and a hot zone for venting through the top opening. At least one baffle creates the temperature zones such that air is directed to flow from the cold zone through the electronic component storage area to the hot zone.

Abstract: The present invention improves the processing and products of coprecipitation of Fe and other metals selected from Mn, Zn, Ni, and Mg as carbonates and hydroxides in the manufacture of magnetically soft ferrites. Teachings are provided which enable control of the characteristics, especially the particle shape of coprecipitated metal carbonates and hydroxides, to bring about significant advantages in further processing such as relief of critical sintering requirements to meet commercial specifications, improved intermediate products which can be more easily handled during processing, and improved quality magnetically-soft, compacted, ferrite components.In the manufacture of MnZn ferrites, sintering furnace temperatures encountered by components from the same batch can vary as much as 100.degree. C. while maintaining specifications of permeability and loss factor whereas, with prior ferrite materials, a variation of as little as 5.degree. C. to 10.degree. C.

Abstract: Manufacturing process for ferrimagnetic materials and pressure compacted soft ferrite components utilizing a "wet" process for compositional preparation of materials in which metal carbonates and metal hydroxides are coprecipitated in controllably selected ratios.An aqueous solution of metal ions is formed by dissolving pure metals in acid. This aqueous metal ion solution is added to a predetermined solution of carbonate ions and hydroxide ions. Concentrations, temperature, and rates of addition are controlled to select the ratio of carbonate groups to hydroxide groups in the coprecipitated particles and the size of such particles.The controllably selected ratio of carbonate groups to hydroxide groups facilitates separation of the coprecipitation particles and maintains residual hydroxide groups in the material so as to extend solid-state reactivity of the coprecipitated particles for grain growth and densification purposes until the final heat treatment in which the pressure compacted articles are sintered.