Abstract: This invention relates to a multi-image display structure and a kit comprising: a plurality of substantially triangular optical prisms arranged in a cube-like shape, the triangular prism surfaces being plane-parallel to the top and bottom surfaces of the cube-like shape; slots configured as receptacles for pictures and/or a light-emitting displays between inward-facing quadrangular surfaces of the optical prisms, wherein at least one slot is perpendicular to a side face of the cube-like shape. The multi-image display structure may be used in advertising signs, promotional items, and/or used to display or exhibit multiple artworks, photographs, pictures and/or videos and enables switching between different images depending on the viewing angle of the observer.

Abstract: A double-sided display structure comprising a light transmitting element comprising a light transmitting material. The light transmitting element has a pair of opposed light receiving faces (22) and a pair of opposed light emitting faces (23) substantially orthogonally disposed to the light receiving faces (22). A light reflecting layer (25) is disposed at an oblique angle to the light receiving faces (22) and the light emitting faces (23), and a pair of light-emitting displays (24) for displaying the same or different still and/or moving images are mounted such that an image from a respective light-emitting display (24) is emitted into a respective light receiving face (22) and is transmitted through the light transmitting element to be reflected by the reflecting layer (25) to a respective light emitting face (23), whereby the images received at the pair of opposed light receiving faces (22) are visible to observers through the pair of opposed light emitting faces (23) of the display structure.

Abstract: A double-sided display structure comprising a light transmitting element comprising a light transmitting material. The light transmitting element has a pair of opposed light receiving faces (22) and a pair of opposed light emitting faces (23) substantially orthogonally disposed to the light receiving faces (22). A light reflecting layer (25) is disposed at an oblique angle to the light receiving faces (22) and the light emitting faces (23), and a pair of light-emitting displays (24) for displaying the same or different still and/or moving images are mounted such that an image from a respective light-emitting display (24) is emitted into a respective light receiving face (22) and is transmitted through the light transmitting element to be reflected by the reflecting layer (25) to a respective light emitting face (23), whereby the images received at the pair of opposed light receiving faces (22) are visible to observers through the pair of opposed light emitting faces (23) of the display structure.

Abstract: A projection exposure apparatus for microlithography using a wavelength?193 nm, includes (A) a primary light source, (B) an illumination system having (1) an image plane, (2) a plurality of raster elements for receiving light from the primary light source, and (3) a field mirror for receiving the light from the plurality of raster elements and for forming an arc-shaped field having a plurality of field points in the image plane, and (C) a projection objective. The illumination system has a principle ray associated with each of the plurality of field points thus defining a plurality of principle rays. The plurality of principle rays run divergently into the projection objective.

Abstract: The invention provides a sprayer for spraying mold wall treatment agent or another liquid. The liquid is sprayed onto, for example, the walls of a mold or some other article. The sprayer includes a spray element body and a rotor mounted with freedom to rotate around an axis of rotation in the spray element body. An atomizing element is attached to one end of the rotor. A first feed line for mold wall treatment agent or another liquid to be sprayed is provided, as well as a second feed line for control air which directs mold wall treatment agent atomized by the atomizing element in the desired spray direction.

Abstract: A projection exposure apparatus for microlithography using a wavelength≦193 nm, includes (A) a primary light source, (B) an illumination system having (1) an image plane, (2) a plurality of raster elements for receiving light from the primary light source, and (3) a field mirror for receiving the light from the plurality of raster elements and for forming an arc-shaped field having a plurality of field points in the image plane, and (C) a projection objective. The illumination system has a principle ray associated with each of the plurality of field points thus defining a plurality of principle rays. The plurality of principle rays run divergently into the projection objective.

Abstract: In an electric energy generating plant including a coal gasification arrangement and a combined gas turbine and steam combine, hot raw gas generated in the gasification arrangement is fed via a heat-exchanging and dust separating unit into a desulfurization unit from which cool purified gas is discharged. The heat exchanging unit includes a tubular pressure resistant housing serving as a feeding passage for the hot raw gas and enclosing a coaxial arrangement of a tubular pipe-wall housing of a waste-heat recovery boiler, and pipe spirals of a raw gas/purified gas heat exchanger. The waste-heat recovery boiler delivers superheated steam to the steam turbine and the raw gas/purified gas heat exchanger delivers heated purified gas to the gas turbine.

Abstract: Scrap metal for steelmaking in a converter is preheated by a heating installation and subsequently charged into a charging trough. The preheating takes place in a separate furnace which is aligned parallel to the charging trough. The furnace can be brought to an emptying position in such a way that the preheated scrap can fall from the preheating furnace and still retain its orientation.

Abstract: Roll-forming method for perforated and expanded metal strips in which marginal edges of a strip of metal are perforated and engaged by a conveyor to advance the strip, a central web portion of the strip is slotted then expanded out of the plane of the marginal edges by a series of pressure rollers, and the strip then cut to desired length.

Abstract: The invention refers to a spray nozzle arrangement for metal strand casting plants, particularly steel strand casting plants with several nozzles on one spray plane, such nozzles being adjustable with respect to the distance from the casting strand, and with each other in parallel direction; they are also adjustable at right angle with the course of direction of the strand by means of parallel adjusting devices. Adjustment of the spray nozzles serves the purpose to either control the cooling intensity via the impact energy, or to adapt the spray angle of a certain spray nozzle to a change in strand width. Both steps may be used in combination for the adjustment required.

Abstract: An accessory suspension device for an existing binder is formed by an angle strip having slides which can be pulled out so as to project from opposite ends of the spine to suspend the binder. The device fits on the rings of the ring mechanism of the binder and acts to support the ring portions which actually carry the sheets of paper contained in the binder when the binder is suspended by the device.