Abstract: An effective process is provided for cleanly and safely combusting coal or other carbonaceous material in a manner which enhances the environment by reducing emission of pollutants. In order to reduce nitrogen oxide and sulfur oxide emissions during combustion, combustion is carried out in the presence of one or more additives comprising an alkali metal salt, such as sodium chloride. To further enhance the reaction and removal of sulfur oxides and nitrogen oxides, the additive can include an iron-containing compound, such as iron oxide, and/or a metal oxide, such as manganese oxide.

Abstract: An improved aircraft seat is equipped with a special flexible lumbar panel to better and more comfortably support the back of the passenger seated in the aircraft seat. The flexible lumbar panel can be used with different type of reclining chairs but is especially useful with high hinge point aircraft seats. The lumbar panel has a moveable lower end which can be guided by guide members. The upper end of the lumbar panel can be secured to a torque bar.

Abstract: An improved seat fitting assembly has an impact resistant construction to increase the safety, stability, longevity, and reliability of passenger seat equipment. The fittings has specially designed outer openings to accommodate normal loads, rotation of the track or seat, and bending of the fastener. The fitting can be equipped with a bushing and can comprise a composite body.

Abstract: A fluidized bed apparatus and method are disclosed for coating, granulating and/or drying particles. The particles are circulated within a chamber by means of circumferential air flow. A first gas stream moves upwardly through the chamber. A second gas stream enters the chamber through openings in the side wall of the chamber. The openings extend generally horizontally and tangential to the side wall so that the second gas is directed circumferentially in the chamber for three-dimensional rotation and circulation of the particles.

Abstract: A process is disclosed for use in the manufacture of multilayer thin film integrated circuits for selective removal of specific layers, and a composition of matter useful in the process for selective etching of polysilicon and silicon nitrides during the manufacture of thin film integrated circuits. A multi-layer thin film integrated circuit is exposed to a plasma formed from a gaseous mixture of nitrous oxide and a fluoro compound. The nitrous oxide preferably comprises between 2.5% and 9.0% of the mixture and the fluoro compound preferably comprises between 91.0% and 97.5% of the mixture.

Abstract: A method and apparatus are provided for loading an intrauterine contraceptive device into the barrel of an inserter. The device includes an apertured tubular section having a closed end section at one end. The closed end defines an enlarged chamber. The device has a stem, a flexible arm generally transverse to the stem, and an enlarged head at one end of the stem. The device is receivable in the instrument when the stem is partially disposed within the barrel and the barrel is displaced forwardly until the head is received in the chamber. The head engages the shoulder that is defined between the aperture and the chamber in the instrument, thereby to retain the device in the instrument when the barrel is withdrawn. The device is removable from the instrument when the barrel is inserted again into the instrument to dislodge the head from the shoulder so that the barrel can be withdrawn together with the device.