Abstract: Various aspects of the present disclosure are directed toward implantable medical devices, systems, and methods for cardiac assistance.

Abstract: This invention relates to the use of sulfonamide substituted diphenyl urea compounds to treat endometriosis.

Abstract: This invention relates to novel compounds and compositions thereof, useful in the treatment of disease states mediated by the chemokine, Interleukin-8 (IL-8).

Abstract: A rechargeable cellular telephone includes a rechargeable battery connected to an integrated recharging system, which is connected to a plug adapted to engage an electrical outlet to supply electricity to the recharging system and battery. The recharging system is preferably housed either within the telephone body or within the plug. The telephone body may include a storage area and spring-loaded reel for storing the cord. The recharging system may include a rectifier, a transformer, and a voltage regulator. The plug may be clipped to the telephone body, or include retractable prongs.

Abstract: A waterless or driographic printing plate which can be thermally imaged by an infrared laser is composed of a substrate; a thermal imaging layer containing a photothermal conversion material, such as an infrared absorbing material, and a thermoplastic polyurethane with pendent allyl groups; and a crosslinked silicone polymer top layer. It was discovered that when the imaging layer contains an allyl functional polyurethane mixed with an infrared absorbing dye or pigment, the polymeric layer will have enhanced solubility in certain solvents when exposed to infrared radiation. In addition, the polymeric layer continues to exhibit excellent adhesion to the silicone in unexposed areas so that the infrared absorbing layer can endure development with a suitable organic solvent, or a solvent mixture. Mild brushing or rubbing with the developing solvent readily removes laser-struck portions of the infrared imaging layer while unexposed areas remain firmly intact.

Abstract: Low molecular weight copolymers of the general formula: ##STR1## exhibit excellent concentrative action in the flotation of sylvinite ores thereby resulting in improved selectivity and recovery of sylvite (KCl). The low molecular weight copolymers perform concentrative action without resulting in any associated flocculation in the flotation process.

Abstract: Low molecular weight compolymers and terpolymers of the general structure: ##STR1## wherein R.sub.1 is hydrogen or a methyl radical, R.sub.2 is hydrogen or COOM and M is a hydrogen, alkali metal cation or ammonium ion, exhibit excellent depressive action in the flotation of non-sulfide mineral ores thereby resulting in improved selectivity and recovery. The low molecular weight copolymers and terpolymers, perform depressing action without resulting in any associated flocculation in the flotation system. These copolymers and terpolymers can be combined with other known depressing agents in nonsulfide ore flotation processes such as starch, dextrin, water soluble gum and the like, to obtain equivalent or improved selectivity and recovery than would be obtained using these depressants alone.

Abstract: Conventional starches are chemically crosslinked for use as selective depressants in the flotation of non-sulfide mineral ores. The process employing these crosslinked starches requires lower reagent dosages, exhibits improved selectivity and recovery and exerts a lower load on existing waste treatment facilities. The crosslinking agents employed are bifunctional and are used in sufficient quantities to result in 500 to 10,000 anhydroglucose units per crosslink.

Abstract: Low molecular weight hydrolyzed polymers or copolymers of the general structure: ##STR1## exhibit excellent depressive action in the flotation of non-sulfide mineral ores thereby resulting in improved selectivity and recovery. The low molecular weight, partially hydrolyzed polymers or copolymers perform depressing action without resulting in any associated flocculation in the flotation system. The partially hydrolyzed polymers or copolymers can be combined with other known depressing agents for non-sulfide ores, such as starch, dextrin, gum and the like, to obtain equivalent or improved selectivity and recovery than would be obtained using these depressants alone.

Abstract: An iron ore is finely ground and slurried prior to being subjected to treatment with a selective flocculant for iron values. Subsequent to treatment, the iron values are allowed to settle into the underflow concentrate and be recovered. The selective flocculant employed is a hydroxymethylated polyacrylamide having a high molecular weight and a degree of hydroxymethylation in excess of about 50%.

Abstract: Selective flocculation of iron ores is accomplished through the employment of partially carboxylated polyacrylamides as the selective flocculant. The partially carboxylated polyacrylamides employed in the selective flocculation contain from about 20-65% carboxyl groups and are of a molecular weight in excess of one million. The selective flocculation process performs a separation of iron ores predominantly containing semitaconite, oxidized taconite and hematitic-goethitic jaspers from their associated siliceous gangue.

Abstract: Certain mixtures of polyanionic and polycationic polymers are effective inhibitors of magnesium hydroxide scale formation in evaporative desalination units.

Abstract: An anionic polymer of acrylamide having a skewed molecular weight distribution such that about 60% of said polymer has a molecular weight of about 500 to 2,000 and about 10% of said polymer has a molecular weight of about 4,000 to 12,000 has been discovered. The process of manufacturing this skewed molecular weight distribution anionic polymer is described. Its use as a scale inhibitor for controlling the deposition of adherent scales on the walls of vessels or pipes, and as an anti-precipitant for keeping alkaline earth cations in solution is also described. The use of the anionic polymer of acrylamide consisting of a skewed molecular weight could be used in recirculating water systems, boilers, and in evaporative and reverse osmosis desalination systems.

Abstract: Mixtures of certain polycationic and polyanionic polymers derived from an ethylenically unsaturated dibasic acid or an ethylenically unsaturated sulfuric acid are effective compositions for the control of magnesium scale in evaporative desalination units.

Abstract: Magnesium hydroxide scale formation in evaporative desalination units is inhibited by adding to the saline water being processed a mixture of certain polycationic polymers and polyanionic polymers derived from an ethylenically unsaturated dibasic acid or an ethylenically unsaturated sulfonic acid.

Abstract: Certain mixtures of polyanionic and polycationic polymers are effective inhibitors of magnesium hydroxide scale formation in evaporative desalination units.

Abstract: Magnesium hydroxide scale formation in evaporative desalination units is inhibited by adding to the saline water being processed a mixture of certain polycationic and polyanionic polymers.