Abstract: Generating shared workspaces for enabling communications between users of different organizations and facilitating discovery of users associated with different organizations is described. A first user can generate a shared workspace and associate one or more other organizations therewith. The first user can designate first criteria associated with joining the shared workspace. The communication platform can receive a request from a second user to join the shared workspace. Based on a determination that the second user satisfies the first criteria, the communication platform can enable the second user access to the shared workspace. In some examples, an administrator associated with an organization of the second user can establish second criteria for users of the organization to join the shared workspace. In such examples, the communication platform can enable the second user access to the shared workspace based on a determination that the second user also satisfies the second criteria.

Abstract: A thermodynamically controlled process for preparing Form I polymorph of lamivudine is described, wherein the process involves crystallizing Form I at a temperature of from about 0° C. to about 50° C. from a mixture which comprises (a) lamivudine or an acid salt thereof or both, (b) a solvent system comprising water and at least one organic solvent, and optionally (c) Form I seed; wherein, when a lamivudine acid salt is employed in the mixture, the crystallizing step is conducted in the presence of a base; and wherein the water activity of the solvent system is maintained in a range in which Form I is thermodynamically the most stable form of lamivudine.

Abstract: The present invention provides thermal insulator composites based upon nanostructured L3-silica microparticles and polyurethane foam chemistry that are both easy to process and have superior insulating properties for use in household and commercial refrigeration, construction, and shipping applications. The composite material retains many of the attractive processing characteristics of polyurethane foams such as volume expansion and shape-filling during polymerization and demonstrates a total thermal conductivity between 32 and 44% that of commercially available polyurethane foams.