polymeric prosthetic devices and materials. 1970-january 1987 (citations from the u.s. patent database). rept. for 1970-jan 87

this bibliography contains citations of selected patents concerning design aspects and production methods pertaining to polymeric prosthetic devices which are implanted into the human body fabrication techniques, specific material compositions, and surface treatment methods used to enhance biocompatibility are presented dental and bone pr..

effects of space radiation on a chemically modified graphite-epoxy composite material. interim rept

the effects of the space environment on the engineering properties and chemistry of a chemically modified t300/934 graphite-epoxy composite system are characterized. the material was subjected to 1.0 x 10 to the 10th power rads of 1.0 mev electron irradiation under vacuum to simulate 30 years in geosynchronous earth orbit. monotonic tensi..

low density ceramics based on open cell macrostructures fabricated from reticulated polymer substrates. final rept. 1 may 83-30 apr 85

processing procedures, and resulting mechanical properties, of open cell low density (relative density less that 0. 1) ceramic macrostructures were investigated. these macrostructures were fabricated by slurry coating reticulated polymer substrates. cracks in the powder coating, which were produced during the pyrolysis of the substrate, r..

traitement de surface de fibres refractaires. proces-verbal 47-803/f (refractory fibers surface treatment). final report

surface deposits on refractory fibers were obtained by magnetron rf cathodic spraying. the coatings included al2o3, y2o3, zro2 stabilized with cao, nb2o5 and nb. a device to coat continuously a line of fibers 10 m long was developed. a preliminary encouraging test is the effective coating of a carbon fiber of 10,000 filaments 10 m long wi..

development of heat-sealable sewing thread. phase 1. final rept aug 86-apr 87

developmental cp fabrics contain a waterproof breathable membrane (gore-tex) barrier which is laminated to the underside of an outer shell fabric. this barrier provides liquid water resistance and some degree of agent resistance. during sewing this barrier becomes perforated, inviting penetration by liquid and vaporous agents, thereby pos..

polyurethane resins: compositions and production methods. january 1971-september 1988 (citations from the u.s. patent database). rept for jan 71-sep 88

this bibliography contains citations of selected patents concerning the compositions and methods for producing polyurethane resins. these resins are used in such applications as adhesives and coatings for manufacturing industries, biomaterials, textiles and fabrics, sealants, medical and dental materials, flame retardants, contact lenses,..

enzyme-based fiber optic sensors

fiber optic chemical sensors capable of detecting glucose and penicillin were developed. each consists of a polymer membrane that is covalently attached to the tip of a glass optical fiber. the membrane contains the enzyme and a ph-sensitive fluorescent dye (fluorescein). a signal is produced when the enzyme catalyzes the conversion of th..

portable cooling system designed. ntis tech note

this citation summarizes a one-page announcement of technology available for utilization. a bench model, dry-ice, liquid-pulsepump, portable cooling system, developed by the navy clothing and textile research facility provides conduction cooling to personnel subjected to heat stress. the system, small and light enough to carry, dissipates..

polymeric prosthetic devices and materials. january 1970-february 1988 (citations from the u.s. patent database). rept. for jan 70-feb 88

this bibliography contains citations of selected patents concerning design aspects and production methods pertaining to polymeric prosthetic devices which are implanted into the human body fabrication techniques, specific material compositions, and surface treatment methods used to enhance biocompatibility are presented dental and bone pr..

rapport annuel du comite permanent au conseil general (activities report in metal manufacturing). annual report, 1986

research on vermicular graphite and bainitic nodular iron castings, molding sand, solidification numerical simulation, and thermal treatments is described. developments of metallic constructions of many different types are presented. the manufacturing techniques, the utilization of plastic materials, and surface treatments are discussed