Abstract: A respiratory mask assembly for use with a patient, and that is suited for use with children ranging in age from about 2-7 years, includes a flexible patient interface structure arranged to interface with and deliver air to the patient's nose, the patient interface structure including cylindrical protrusions extending from respective opposite sides of the patient interface structure adjacent the patient's nares; a frame configured to support the patient interface structure, the frame including a pair of cylinders, each cylinder configured to receive a respective cylindrical protrusion of the patient interface structure; headgear arranged for releasable attachment to the frame; an air delivery tube connected to either one of the cylindrical protrusions; and a plug connected to the other one of the cylindrical protrusions.

Abstract: A load bearing building panel (10) is composed of light weight concrete and reinforcing within the panel body (11) adjacent to the first and second major faces (12, 13). The reinforcing (18, 19) extends in a horizontal direction for most of the width of the panel and in a vertical direction for most of the height. In addition, the reinforcing extends about apertures near the upper and lower faces (16, 17). The apertures a suitable for fasteners to extend there through. A load bearing column is disclosed with top and bottom portions engageable with a structure they are resting upon. A triangular cross-section tubular member extends between and is attached to the top and bottom portions.

Abstract: A load bearing building panel 810) is composed of light weight concrete and reinforcing within the panel body 11) adjacent to the first and second major faces (12, 13). The reinforcing (18, 19) extends in a horizontal direction for most of the width of the panel and in a vertical direction for most of the height. In addition, the reinforcing extends about apertures near the upper and lower faces (16, 17). The apertures a suitable for fasteners to extend there through. A load bearing column is disclosed with top and bottom portions engageable with a structure they are resting upon. A triangular cross-section tubular member extends between and is attached to the top and bottom portions.