Abstract: The disclosure is directed to improved methods for preparing substituted quinolinylcyclohexylpropanamide compounds.

Abstract: A method for engraving an image on a surface of an article selected from a group consisting of brick, ceramic tile, concrete pavers and natural stone articles, comprising providing a laser engraving apparatus comprising a steerable laser beam, steering the laser beam continuously over a first beam path on the surface to provide an engraved image and repeatedly traversing the laser beam over a path substantially parallel to the first beam path and incrementally spaced therefrom to define a perimeter of the engraved image. The method further comprises steering the laser beam within an infill area defined by the perimeter of the engraved image to provide a plurality of engraved segments extending within infill area.

Abstract: A method for engraving an image on a surface of an article selected from a group consisting of brick, ceramic tile, concrete pavers and natural stone articles, comprising providing a laser engraving apparatus comprising a steerable laser beam, steering the laser beam continuously over a first beam path on the surface to provide an engraved image and repeatedly traversing the laser beam over a path substantially parallel to the first beam path and incrementally spaced therefrom to define a perimeter of the engraved image. The method further comprises steering the laser beam within an infill area defined by the perimeter of the engraved image to provide a plurality of engraved segments extending within infill area.

Abstract: A brick, and similar article, engraving process utilizes a CO2 continuous beam laser guided over a beam path which outlines a graphic image on the article being engraved and repeats the beam path at incrementally spaced positions of the beam until the width of the graphic image is defined, thereby concentrating the heat of the laser engraving process in the vicinity of the graphic image during the process. The graphic image may be engraved in one or two passes of the beam over the surface of the article being engraved, such as common construction brick, wherein the engraving has minimal reflectivity and is of a uniform dark color providing an enhanced aesthetically pleasing engraved article.

Abstract: A system for canceling contaminating narrowband interference for a wideband DSSS receiver by weighting a channelized copy of the signal of interest in accordance with the result of a correlation between a narrowband copy of the channelized signal of interest centered around the center frequency of the contaminating narrowband interference and a narrowband copy of a wideband feedback signal centered around the center frequency of the contaminating narrowband interference.