Abstract: An article that includes: an inorganic oxide substrate having opposing major surfaces; and an optical film structure disposed on a first major surface of the substrate, the optical film structure comprising one or more of a silicon-containing oxide, a silicon-containing nitride and a silicon-containing oxynitride and a physical thickness from about 50 nm to less than 500 nm. The article exhibits a hardness of 8 GPa or greater measured at an indentation depth of about 100 nm or a maximum hardness of 9 GPa or greater measured over an indentation depth range from about 100 nm to about 500 nm, the hardness and the maximum hardness measured by a Berkovich Indenter Hardness Test. Further, the article exhibits a single-side photopic average reflectance that is less than 1%.

Abstract: A support structure for furniture, shelves or the like comprises at least one vertical column and at least one crossbar releasably connected to the vertical column. The vertical column comprises at least two tubular members abutting with end faces thereof against each other, a tension member extending through the tubular members and a pair of end members connected in such a manner to opposite ends of the tension member to engage the end faces of the tubular members opposite the abutting end faces for maintaining the abutting end faces in tight engagement with each other. One of the tubular members is provided with laterally projecting coupling means releasably connected to the crossbar.