Abstract: The present invention comprises a process for conversion of oxygenates to olefins comprising contacting within a reactor the oxygenates with a catalyst to produce light olefins and wherein the reactor comprises at least two zones, a first zone wherein gas circulates at a faster rate than a second zone wherein a gas circulates at a slower rate; and inserting a quantity of inert gas into the second zone to increase circulation of any materials located in said second zone. The invention prevents accumulation of undesirable by-products within stagnant zones within the reactor and reduces the amount of coke deposited on catalyst or on surfaces within these zones.

Abstract: Devices and methods of entraining a substance within an airflow are disclosed. Condensation aerosol delivery devices and methods of consistently producing multiple doses of a substance, such as a drug, having high purity, high yield, characterized by a particle size distribution appropriate for pulmonary delivery, and which can be administered to a user in a single dose are also disclosed.

Abstract: Heating units, drug supply units and drug delivery articles capable of rapid heating are disclosed. Heating units comprising a substrate and a solid fuel capable of undergoing an exothermic metal oxidation reaction disposed within the substrate are disclosed. Drug supply units and drug delivery articles wherein a solid fuel is configured to heat a substrate to a temperature sufficient to rapidly thermally vaporize a drug disposed thereon are also disclosed.

Abstract: Methods for determining the film thickness of a compound composition needed to provide a selected purity and yield of a condensation aerosol via vaporization of the compound composition have applications in aerosol delivery technology, in pulmonary drug delivery, and in other therapeutic treatment regimes. The methods for determining such film thickness, for use in a device having a film of drug composition to be aerosolized, include generating purities and yields of a drug composition by vaporizing films of the drug composition from substrates at two or more temperatures in the range of 150° C. to 500° C. and two or more film thickness in the range of 0.05 to 50 microns, determining from these yields and purities if a thickness and temperature exist where the aerosol has at least 90% purity and at least 50% yield, and repeated such measurements until the selected purity and yield requirement are met.

Abstract: An assembly and method for producing a condensation aerosol are disclosed. The assembly includes a heat-conductive metal substrate with an oxidation resistant exterior surface and a drug composition film on the exterior surface and is for use in an aerosol device. The thickness of the film and the surface of the substrate is such that the aerosol formed by vaporizing and condensing the drug composition the aerosol contain 10% by weight or less drug-degradation products and at least 50% of the total amount of the drug composition in the film. The methods for treating the exterior surface include heat and chemical treatment and formation of a protective overcoat.

Abstract: An distributor arrangement introduces spent FCC catalyst more uniformly across the dense bed of the regenerator to provide more even contact with regeneration gas in order to avoid hot spots and zones of incomplete combustion. The invention forms a fluidized hopper to collect spent catalyst and a horizontally extended header with multiple horizontally extended outlet arms to place catalyst into the regenerator. The invention may use an aeration means to fluidize the header to further assist catalyst flow. Furthermore, the spent catalyst delivered to the top of the regenerator dense reduces NOx emissions in the flue gas.

Abstract: The invention relates to a three-way, three-phase power divider or combiner. More specifically, the invention will split or combine power into three different phases at 0 degrees, 60 degrees and 120 degrees using lumped elements, waveguides, microstripline, stripline and coaxial cable. The shift in phase of each leg of the power divider or combiner results in suppression of harmonic distortion, improved efficiency and matching of identical amplifiers with equivalent input impedances or reflection coefficients.

Abstract: A radially combined RF/Microwave amplifier includes an input divider for dividing the input power signal into "N" input signals, and a single matching/combiner circuit configuration for matching an combining the amplified "N" input signals into one combined output power signal P.sub.T. The system utilizes a stripline/microstrip configuration of the matching/combiner circuitry and suspends this circuitry above one surface of an aluminum chill plate. The input stage of the amplifier is disposed on the opposite surface of the chill plate with the transistors connecting the input stage with the output network across the peripheral edge of the chill plate.

Abstract: The present invention is directed to the treatment of a migraine headache with a composition containing leuko methylene blue as the active ingredient.