摘要:
A reinforcing element for producing concrete components, a concrete component and corresponding production methods. The reinforcing element has a plurality of fibers and a plurality of holding elements which are connected to each other by the fibers so that the fibers can be stressed in their longitudinal direction by the holding elements. The fibers are fixed to the holding elements such that the fibers in the stressed state enter the holding elements in a substantially linear manner. This enables both a high degree of pretension and an efficient, reliable and thus cost-effective production of the concrete components.
摘要:
The invention provides a light emitting diode device comprising a light emitting diode (1, 11) arranged on a substrate (2, 12) and a wavelength converting element (3, 13, 14). The wavelength converting element (3, 13) contains as a luminescent material a Mn4+-activated fluoride compound having a garnet-type crystal structure. The Mn4+-activated fluoride compound preferably answers the general formula {A3}[B2-x-yMnxMgy](Li3)F12-dOd, in which formula A stands for at least one element selected from the series consisting of Na+ and K+ and B stands for at least one element selected from the series consisting of Al3+, B3+, Sc3+, Fe3+, Cr3+, Ti4+ and In3+, and in which formula x ranges between 0.02 and 0.2, y ranges between 0.0 (and incl. 0.0) and 0.4 and d ranges between 0 (and incl. 0) and 1. Said compound is most preferably {Na3}[Al2-x-yMnxMgy](Li3)F12-dOd. The invention also provides said material as well as a method for its preparation. As the luminescent materials of the described type and structure have high stability and low sensitivity towards humid environments, they can advantageously be used as in wavelength conversion elements of LED devices.
摘要:
Block co-polymers including a hydrophilic block and a hydrophobic poly(amino acid) block which further includes dihydroxyphenyl moieties are provided, as well as methods of making and using the same. Such block copolymers may be used to prepare biocompatible adhesives which display good adhesives properties in aqueous environments, including in in vivo applications.
摘要:
A semi-finished product (1a) has a tubular sleeve element (4) which extends along a longitudinal axis (A) and has a substantially rectangular cross-section and at least a first (3a) and at least a second (3b) strut element, wherein the first strut element (3a) extends from a first edge of the tubular sleeve to the second edge which lies opposite it with respect to the longitudinal axis, and the second strut element (3b) extends along the other diagonal between the associated edges. The strut elements (3a, 3b) are advantageously designed and arranged such that they absorb compressive forces but not tensile forces. The product can be fabricated completely from a fiber-reinforced plastic and may be integrated in construction elements and surface elements.
摘要:
A block co-polymer includes a water soluble carrier block; an amino acid-based or acrylic acid-based block; and the amino acid-based or acrylic acid-based block includes a fluorinated alkyl group or a fluorinated alkylene glycol group.
摘要:
A push button actuated excess current protection switch, particularly an on-board electrical system protection switch with manual actuation and bimetal controlled automatic tripping includes a switch latch (7) actuated by the push button (41) and a bimetal tripping device for releasing the switch latch (7) with the bimetal tripping device including a self-heated approximately U-shaped punched bimetal (101) which is connected electrically in series in the current path through the switch. The one free arm end (102) of the bimetal is fastened to the end of a connecting lug (5) fixed in the interior of the switch housing. Its second free arm end (104) is fastened to a connecting piece (106, 106') leading to a mating contact (9') that is fixed to the housing. The base (114) is formed by the deflectable end of the bimetal which is kinematically connected with the switch latch.Between the connecting flap (105) of the connecting piece (106, 106') for the second arm end (104) of the bimetal (101) and the region of the connecting piece (106, 106') adjacent the mating contact that is fixed to the housing, the connecting piece is provided with a constriction (111) formed by a slit passing through the plate-shaped central section of the connecting piece (106, 106') transversely to the plane of the plate. The connecting flap (105) is rotatable, in order to adjust the response value of the bimetal (101), around the constriction in that an adjusting screw (110) charges the central section from the bottom face of the switch housing.
摘要:
Waste material is disposed of and its usable constituents recovered by feeding the waste material downwardly through a vertical shaft in which its temperature is progressively raised thereby driving off volatile matter and thermally degrading appropriate portions of the material to provide a gaseous discharge suitable for use as a fuel. Material such as metal and other non-volatilizable substances eventually reach a furnace chamber which has a temperature of at least 1600.degree. C where they are liquified and tapped from the chamber. The heavier metal component is tapped from a point lower than the point at which other liquid residues are tapped to enable the metal to be recycled.
摘要:
A reinforcing element for producing concrete components, a concrete component and corresponding production methods. The reinforcing element has a plurality of fibers and a plurality of holding elements which are connected to each other by the fibers so that the fibers can be stressed in their longitudinal direction by the holding elements. The fibers are fixed to the holding elements such that the fibers in the stressed state enter the holding elements in a substantially linear manner. This enables both a high degree of pretension and an efficient, reliable and thus cost-effective production of the concrete components.
摘要:
The invention relates to methods of producing metal-containing antimicrobial plastics or plastic products and also to plastic products obtainable by the method, especially plastic products for medical requirements.