Abstract: A method of capturing carbon dioxide from a gaseous mixture at ambient temperature or higher, comprising obtaining a slurry of waste carbide slag obtained after the manufacturing of acetylene. Heating the slurry to a temperature of approximately 105° C. for two hours and sufficient to dry the slurry until a water content of about 20% of a dry mass of the carbide slag is achieved, thereby producing activated dried carbide slag. The method including contacting the activated dried carbide slag with a gaseous mixture containing CO2, thereby permitting the activated dried carbide slag to capture CO2.

Abstract: Examples relate to setting a performance mode of an RF receiver front end. An example method includes determining a power state of an input signal to an RF receiver front end; and setting a performance mode of the RF receiver front end to one of at least three distinct performance modes offered by the RF receiver front end at least partially responsive to the determined power state of the input signal.

Abstract: A dental polishing paste and a method of surface finishing a dental ceramic with the dental polishing paste is described. The dental polishing paste includes 60 to 90 weight percentage (wt. %) glycerin; 7.5 to 17.5 wt. % inorganic nanoparticles such as, diamond or zirconia, having a mean particle size of 5 to 25 nanometer (nm); and 2.5 to 32.5 wt. % additive, each based on a total weight of dental polishing paste.

Abstract: A reversible reciprocating mechanism has a single crankshaft and geometrical equilateral shapes to organize positive displacement reciprocating movement with liquid movement for pumping or energy recovery systems.

Abstract: A method for producing a dense and tenacious coating with a thermal spray gun including a nozzle member and a gas cap. The gas cap extends from the nozzle and has an inwardly facing cylindrical wall defining a combustion chamber with an open end and an opposite end bounded by the nozzle. An annular flow of a combustible mixture is injected at a pressure of at least two bar above atmospheric pressure from the nozzle coaxially into the combustion chamber. An annular outer flow of pressurized air is injected from the nozzle adjacent to the cylindrical wall. Powder particles having a heat-stable, non-fusible component and a heat-softenable component, and entrained in a carrier gas, are fed axially from the nozzle into the combustion chamber. An annular inner flow of pressurized air is injected from the nozzle into the combustion chamber coaxially between the combustible mixture and the powder-carrier gas.