Polaroid Corporation

Martin Marietta Energy Systems, Inc.

The United States of America As Represented by the United States

Union Oil Company of California

The United States of America As Represented by the Department of Energy

Charles H Byers

Timothy C Scott

Charles D Scott

Michael T Harris

Charlene A Woodward

Robert W Hausslein

Allen W Doty

Michael J Berger

Vernon T Taniguchi

John J Magenheimer

Mara O Nestle

The present invention provides a method for preparing metal oxide powder. A first solution, which is substantially organic, is prepared. A second solution, which is an aqueous solution substantially immiscible in the first solution, is prepared and delivered as drops to the first solution. The drops of the second solution are atomized by a pulsed electric field forming micro-drops of the second solution. Reagents in the first solution diffuse into and react with reactants in the micro-drops of the second solution forming metal hydroxide or oxalate particles. The metal hydroxide or metal oxalate particles are then recovered and dried to produce the metal oxide powder. An apparatus for preparing a metal oxide powder is also disclosed.

Method and apparatus for the production of metal oxide powder

The invention is a gel bead comprising propylene glycol alginate and bone gelatin and is capable of removing metals such as Sr and Cs from solution without adding other adsorbents. The invention could have application to the nuclear industry's waste removal activities.

Gel bead composition for metal adsorption

Chromatographic species are continuously separated by displacement chromatography using an apparatus that comprises an inlet distribution manifold, a particulate bed, and a plurality of collector receptacles. The particulate bed is moved with respect to the inlet distributor manifold and the collector receptacles.

Continuous displacement chromatographic method

A silver diffusion transfer film unit which comprises, in order, a support, a silver precipitating layer, a protective layer comprising chitosan having a copper salt and a polyol selected from the group consisting of glycerol, sorbitol, polyvinyl alcohol, inositol, ethylene glycol, propylene glycol and hydroxyethyl cellulose disposed therein, a release layer, and a photosensitive silver halide layer. In a particularly preferred embodiment, the film unit is an additive color diffusion transfer film unit.

Diffusion transfer film system with protective layer of copper salt,

Silver-precipitating nuclei are prepared by partially oxidizing a stannous salt reducing agent and then reducing a noble metal salt or complex with said reducing agent.

Method for forming noble metal silver precipitating nuclei

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Oak Ridge, TN, United States of America

Charles H Byers