Abstract: This disclosure provides methods and systems for performing authentication in a virtual reality environment. In some implementations, the system receives a request for access to a virtual reality financial center requiring authentication from a user. The system can collect user identification information that identifies the user and verification information required to verify the user's identity via a virtual reality platform.

Abstract: A cryogenic solid-liquid extractor comprises a reboiler for evaporating an extraction solvent; a cryogenic heat exchanger for condensing the vaporized extraction solvent to a liquid extraction solvent by passing the vaporized extraction solvent through a container cooled by a cryogenic cooling agent comprising a mixture of a cryogenic solvent and a compressed, liquified or solidified gas to cool the extraction solvent to a temperature below the freezing point of water and above the freezing point of the extraction solvent; a cryogenic extractor for passing the condensed liquid extraction solvent through a solid organic material to extract solvent-soluble material, but not water-soluble material, from the solid organic material, wherein the cryogenic solid-liquid extractor returns the condensed liquid extraction solvent containing extracted material to the reboiler to repeat the vaporization and condensation cycle.

Abstract: A cryogenic solid-liquid extractor comprises a reboiler for evaporating an extraction solvent; a cryogenic heat exchanger for condensing the vaporized extraction solvent to a liquid extraction solvent by passing the vaporized extraction solvent through a container cooled by a cryogenic cooling agent comprising a mixture of a cryogenic solvent and a compressed, liquified or solidified gas to cool the extraction solvent to a temperature below the freezing point of water and above the freezing point of the extraction solvent; a cryogenic extractor for passing the condensed liquid extraction solvent through a solid organic material to extract solvent-soluble material, but not water-soluble material, from the solid organic material, wherein the cryogenic solid-liquid extractor returns the condensed liquid extraction solvent containing extracted material to the reboiler to repeat the vaporization and condensation cycle.

Abstract: Disclosed is a rollable platform that may be unfurled in any orientation over exposed floor or ceiling joists. The platform may be constructed of a specific arrangement of support surface panels and underside joint panels to give the platform both (a) rigidity in a direction that is normal to the support surface via gridlock between the support surface panels and (b) foldability and/or rollability in a direction that is normal to the underside joint panels due to hinged interconnection.

Abstract: Disclosed is a rollable platform that may be unfurled in any orientation over exposed floor or ceiling joists. The platform may be constructed of a specific arrangement of support surface panels and underside joint panels to give the platform both (a) rigidity in a direction that is normal to the support surface via gridlock between the support surface panels and (b) foldability and/or rollability in a direction that is normal to the underside joint panels due to hinged interconnection.

Abstract: A clear personal care or other aqueous gel is formed from dry polymer particles which are free of materials which render the gel cloudy and which are made by reverse phase emulsion polymerisation. The polymerisation process involves distilling water from the emulsion in the presence of sufficient non-aqueous liquid to prevent breakage of the emulsion and then washing, the polymer particles with isopropanol or other suitable solvent and evaporating the solvent.

Abstract: A portable floor system (20) including individual floor sections (22, 24) joined by interlocking tongue elements (40) and receiver elements (50, 70). Each floor section (22, 24) is substantially planar and rectangular, and includes tongue elements on two sides and receiver elements on two sides. The tongue elements (40) have an upwardly-turned portion (44) which engages a downwardly projecting inner member (58, 78) of the receiver elements (50, 70). The receiver elements include a first embodiment (50) having an opening (56) which can be entered by a tongue element from the side of the panel, and a second embodiment (70) having an opening (76) which can be entered by a tongue element from either the side or the bottom of the panel. The portable floor system further includes edge sections (26, 28) which create a smooth transition from the portable floor sections to the permanent floor surface.

Abstract: Film or fibre is made from a polymer of water soluble ethylenically unsaturated monomeric material that includes ionic monomer by extrusion and stretching, and a counterionic lubricant compound is absorbed into the surface of the fibre or film before or during the stretching. The counterionic lubricant compound is also of use for providing a lubricated film on other extruded or comminuted elements of water swellable or water soluble polymeric material.

Abstract: Polymer thickeners suitable for use as textile pigment print paste thickeners are particulate cross linked polymers having a particle size of below 20 .mu.m and have defined physical characterization that indicates an optimum degree of cross linking and molecular size within the polymer.

Abstract: A polymer of an ethylenically unsaturated monomer containing a pendant hydrophobic group and, optionally, other monomers such as (meth) acrylic acid, ethyl acrylate or acrylamide is provided as a stable, substantially anhydrous dispersion containing at least 40% by weight of the polymer in a continuous phase of a non-aqueous liquid. The polymer in the dispersion generally includes acid groups and is neutralized, preferably with ammonia or a volatile amine. The dispersion can be made by reverse phase polymerization of an aqueous blend of monomers, followed by dehydration, or by making the polymer from a water insoluble blend of monomers by oil in water emulsion polymerization, dispersing the resultant oil in water emulsion into the non-aqueous liquid, and then dehydrating. The monomer including the hydrophobic group is preferably an allyl ether.