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In a scientific study in Poland from 2009 to 2010, in which the economic traits of pure Buckfast bees and a hybrid cross of A. m. mellifera and A. m. caucasia were compared, the Buckfast bee was shown to have a larger brood area, greater increase and strength in the build-up to spring, also on the last inspection of the year the Buckfast ...
Buckling-restrained braced frame (BRBF) is a structural steel frame that provides lateral resistance to buckling, particularly during seismic activity. [1] The BRBF is typically a special case of a concentrically braced frame. Tests have demonstrated BRBF systems are highly effective for energy dissipation, while being vulnerable to large ...
In structural engineering, a braced frame is a structural system designed to resist wind and earthquake forces. Members in a braced frame are not allowed to sway laterally (which can be done using shear wall or a diagonal steel sections, similar to a truss ).
The Carniolan honey bee (Apis mellifera carnica, Pollmann) is a subspecies of the European honey bee. The Carniolan honey bee is native to Slovenia , southern Austria , and parts of Albania , [ 1 ] Croatia , Bosnia and Herzegovina , Montenegro , parts of Serbia , [ 2 ] Hungary , parts of Romania [ 3 ] and North-East Italy .
The tread depth of a step is measured from the edge of the nosing to the vertical riser; if the steps have no nosing, it is the same as the going; otherwise it is the going plus the extent of one nosing. The going of a step is measured from the edge of the nosing to the edge of nosing in plan view. A person using the stairs would move this ...
In structural engineering, a rigid frame is the load-resisting skeleton constructed with straight or curved members interconnected by predominantly rigid connections, which resist movements induced at the joints of members.
Frame of the Crystal Palace. Beams and girders were made of wrought iron with I-beam cross-section. The material was rarely used for the columns, as the cast was both stronger under compression and cheaper, so a typical iron frame building in the second half of the 19th century had cast iron columns and wrought iron beams.
Lugged steel frame construction is a method of building bicycle frames using steel tubing mated with socket-like sleeves, called lugs. For most of the bicycle's history , steel has been the primary material for bicycle frames, with lugged construction the primary assembling method.