Abstract: Very costly professional-level judgments needed to comply with scientific and statutory restrictions on hazardous-waste segregation, shipment and disposal are collected cumulatively in a database for a very large number of hazardous waste materials. Many of these materials are statutorily designated or scientifically recognized, or both, as posing a significant physical danger to humans, other organisms, or the ecosphere generally. Later many consignments of particular materials are received (or identified before receipt, in a batch mode of operation) and classified very inexpensively--using nonprofessional-level personnel--by reference to the computerized database. Reversion to professional-level judgments occurs only if a material not previously encountered is received. Each consignment of each material is classified and handled consistently with all other consignments of like material, and in accordance with the professional-level judgments embodied in the database.

Abstract: The invention disclosed by this application relates to a novel method of processing sinterable powders into sintered ceramic products. This application also relates to novel forms of aluminum oxide, hydroxylapatite, and tricalcium phosphate ceramic products prepared in accordance with the method of this invention, as well as novel intermediate products useful to prepare the novel ceramic products of this invention.

Abstract: A headset is provided for holding electrodes against a subject's head for extended periods of time which has several pairs of support poles or rods whereon several flexible electrode supporting bands attach that allow variable placement and holding of various electrodes in various regions on the head. The regions for placement are the occipital, the central and the frontal regions of the head. The electrode supporting bands are elastic and are attached by hook and eye means to opposing rods so that the bands can be slidably and flexibly adjustably mounted on the headset apparatus. This allows tension holding the electrodes against the subject's head to be adjusted for an optimum balance of comfort and contact.

Abstract: The invention disclosed by this application relates to a novel method of processing sinterable powders into sintered ceramic products. This application also relates to novel forms of aluminum oxide, hydroxylapatite, and tricalcium phosphate ceramic products prepared in accordance with the method of this invention, as well as novel intermediate products useful to prepare the novel ceramic products of this invention.

Abstract: A moldable bone-implant material containing between about 65%-95% hard filler particles and a binder composed of between about 35%-5% of a biocompatible, biodegradable, thermoplastic polymer which has fluidic flow properties at or below about 60.degree. C. One preferred binder is polylactic acid having a molecular weight between about 400 and 5,000 daltons, and a preferred hard filler is hydroxylapatite. In use, the material is warmed to a temperature which allows molding, and the bone site is filled with the moldable material, which then forms a contour-fitting, semi-rigid implant. The implant retains its contour fit and acquires a rigid final state as the binder in the implant is gradually biodegraded and replaced through tissue ingrowth from the surrounding bone site.

Abstract: This invention relates to processes and techniques for forming metal and/or plastic/polyparabanic acid (PPA) laminates particularly for use as a component of electrical and electronic systems, especially as flexible circuit materials. Laminate species not requiring intermediate adhesive layers, not fabricated from preformed PPA films and not requiring subsequent cross-linking or other curing reactions are preferred. Solvent casting of PPA is a preferred method of preparing such laminates.

Abstract: This invention relates to processes and techniques for forming metal and/or plastic/polyparabanic acid (PPA) laminates particularly for use as a component of electrical and electronic systems, especially as flexible circuit materials. Laminate species not requiring intermediate adhesive layers, not fabricated from preformed PPA films and not requiring subsequent cross-linking or other curing reactions are preferred. Solvent casting of PPA is a preferred method of preparing such laminates.

Abstract: Highly unusual and useful novel high-performance, oriented, low-crystalline, essentially heterocyclic structures, e.g. films, are prepared from certain novel and important process sequences. These structures, e.g. films and fibers, possess a unique combination of minimal shrinkage at high temperatures, after orientation, coupled with negligible coefficient of expansion over an unusually wide temperature range.

Abstract: Highly unusual and useful novel high-performance, oriented, lowcrystalline, essentially heterocyclic structures, e.g. films, are prepared from certain novel and important process sequences. These structures, e.g. films and fibers, possess a unique combination of minimal shrinkage at high temperatures, after orientation, coupled with negligible coefficent of expansion over an unusually wide temperature range.