Abstract: A process for producing beryllium carbide powder comprising calcining a blend composition comprising a beryllium-containing compound and a carbon powder at a first calcination temperature to yield a composite powder, milling the composite powder to form a milled powder, stirring the milled powder in a heavy liquid to form a suspension, and separating at least a portion from the suspension to yield the beryllium carbide powder. In one embodiment, a sacrificial layer may be used during the calcination. The process produces a high purity beryllium carbide powder.

Abstract: The Be content of Be Al alloys suitable for investment casting, which contain a small but suitable amount of Ag, can be significantly reduced without adversely affecting their thermal or investment casting properties by including significantly more Si in the alloy than done in the past.

Abstract: A process for the production of hyaluronic acid by continuous fermentation of Streptococcus in a chemostat culture gives high yields of high molecular weight hyaluronic acid uncontaminated by toxic impurities. The process is advantageous in that it solves the problem of traditional batch cultures in which degradation enzymes can begin to break down the cell walls of Streptococcus releasing cells contents into the fermenter broth complicating the purification of high molecular hyaluronic acid.

Abstract: A process for the production of hyaluronic acid by continuous fermentation of Streptococcus equi in a chemostat culture gives high yields of high molecular weight hyaluronic acid uncontaminated by toxic impurities. The process is advantageous in that it solves the problem of traditional batch culture in which degradation enzymes can begin to break down the cell walls of Streptococcus releasing cell contents into the fermenter broth, leading to purification difficulties.