Abstract: The invention relates to a steel-concrete hollow bodied slab or ceiling comprising concrete webs, which are arranged in between hollow bodies, and a reinforcing layer on top of the hollow bodies and a reinforcing layer underneath the hollow bodies, wherein a hollow body is embodied as a peripherally closed container which is devoid of any ascending force and which is open towards the bottom, whereby ventilation holes are provided in the covering wall thereof and the container comprises spacers. The aim of the invention is to obtain a low-cost hollow bodied slab/ceiling exhibiting good load-bearing behavior and an increased ability to discharge transversal forces according to local requirements. According to the invention, the concrete in at least one concrete web consists of high-tensile fibers and/or at least one steel strut, preferably a double wall anchor, and/or the hollow body which is devoid of ascendant forces has a conical or truncated pyramidal periphery whose uppermost end forms a dome-shaped arch.

Abstract: To provide a device and a corresponding method for producing a slit diaphragm using a very simple production process, the device includes a cutting tool (12) capable of cutting along a straight line, and means capable of effecting a relative movement between the cutting tool (12) and a workpiece (10), such that the cutting tool (12) cuts the workpiece (10) along a line which corresponds a beam path in the slit diaphragm to be produced.

Abstract: The invention discloses a standard for referencing luminescence signals, having an optically transparent base material comprising a lanthanum phosphate glass, a fluorophosphate glass, a fluor-crown glass, a lanthanum glass, a glass-ceramic formed therefrom or a lithium aluminosilicate glass-ceramic, the base material including a bulk doping with at least one constituent which is luminescent and comprises at least one rare earth and/or a nonferrous metal, in particular cobalt, chromium or manganese.

Abstract: The invention relates to a method for examining the resistance of a connection between two bodies, whereby one of the bodies only has a small mass. A correspondingly directed force is exerted upon the connection until disconnection thereof. The force used is the centrifugal force which acts at a distance from a rotational axis in a concentric manner about said rotated connection. Said method is particularly advantageous if the body having a small mass is a coating which is applied to the other body. In order to obtain a sufficiently high centrifugal force, an examining stamp is applied to the body having the small mass and/or the coating on the side oriented away from the connection. The adhesion between the body and/or the coating and the examining stamp is greater than between both of the bodies and/or the coating and the other body.

Abstract: The invention relates to a method for evaluating pressure containers made of a composite material by acoustic emission testing.

Abstract: A wave protection structure is intended for a slope, such as the slope of a breakwater or a bank, which slope merges into a bed at the location of a toe. The wave protection structure comprises wave protection elements and toe elements. The wave protection elements are each provided with a plurality of projections for engaging in one another and are provided on the slope in a substantially regular imaginary grid, with a horizontal grid spacing between the centres of gravity of the wave protection elements. The toe elements extend along the toe and their shape differs from the shape of the wave protection elements. The centres of gravity of the toe elements are provided at substantially the horizontal grid spacing from one another. As a result of the toe elements being provided at the grid spacing of the wave protection elements, it is easier to position the toe elements. This also allows the use of larger blocks and means that it is no longer necessary to stack the wave protection elements.

Abstract: The present invention relates to a material with orthophosphate and having a high solubility which can be used as a bioactive bone replacement material and as a substrate material in biotechnology. According to 31P-NMR measurements, the new material comprises Q0-groups of orthophosphate and Q1-groups of diphosphate, the orthophosphates or Q0-groups making up 65 to 99.9% by weight relative to the total phosphorus content of the finished material and the diphosphates or Q1-groups making up 0.1 to 35% by weight relative to the total phosphorus content of the finished material, and wherein according to X-ray diffractometric measurements and relative to the total weight of the finished material, 35 to 99.9% by weight of a main crystal phase consisting of Ca10Na(PO4)7, Ca10K(PO4)7, mixtures thereof or mixed crystals according to the general formula Ca10KxNa1?x(PO4)7, where x=0 to 1, is contained in the bone replacement material and 0.

Abstract: Asphalt pavement exhibiting high reflectivity, heat transmittance and improved thermo-mechanical properties.

Abstract: The invention relates to a metallic implant, which has vitreous-crystalline bioactive material on the surface thereof. According to the invention, a metallic implant base body arranged on the surface of the particles has a bioactive, vitreous-crystalline material consisting of 15-45 wt. % CaO, 40-45 wt. % P2O5, 10-40 wt. % ZrO2 and 0.7-3.5 wt. % fluoride, having apatite and calcium zirconium phosphate as main crystalline and a glass phase as an auxiliary component. Said vitreous crystalline material contains at least 35 wt. % main crystal phases and at least 5-15 wt. % auxiliary compounds. All of the percentage data is expressed in relation to the total weight of the vitreous crystalline material and the particle size of the vitreous crystalline material is between 60-350 ?m.

Abstract: A device for the destruction-free testing of components, in particular of concrete components with ultrasound is suggested, which comprises at least one sensor module with several ultrasonic testing heads functioning as transmitters and/or receivers. The sensor module is provided with a device for producing transmitter impulses for the ultrasonic radiation and with a device for acquiring the readings. Several sensor modules for forming an array are mechanically connected to one another. Furthermore, a control- and evaluation device for activating the sensor modules with their ultrasonic heads and for evaluation of the readings delivered by the sensor modules is provided, which via a bus system is connected with control- and data leads to the sensor modules.

Abstract: A method and apparatus for monitoring vital signs, such as cardiopulmonary activity, using a ballistograph are provided. The method and apparatus may be used to monitor an infant sleeping in a crib, a patient in a hospital, a person with a chronic disease at home or in professional care, or a person in an elder-care setting.

Abstract: A tribosystem for radial and axial foil bearings includes a first structural component part; and a second structural component part interacting with the first part. The first and second parts are in a dry frictional unidirectional sliding contact with one another until an air film is formed. A surface of at least one of the first and second parts being exposed to the dry frictional contact contains at least partly at least one of a metallic bound (Ti,Mo) (C,N), Tin-2Cr2O2n-1 with 6?n?9 and solid solution of TiO2—Cr2O3.

Abstract: Described is a method for operating a positioning vehicle for positioning a test probe in defined intervals along a travel line, as well as to a positioning vehicle for carrying out the method. The positioning vehicle contains a traveling vehicle base part with a guide device and with a test probe carrier guided by this guide device in a guide. The guiding has a first reversal point and a second reversal point. The guide device comprises guide means in order on displacing the vehicle base part to guide the test probe carrier in the travel direction up to the first reversal point after it has reached the second reversal point, and in order to lead back the test probe carrier opposite to the travel direction up to the second reversal point after it has reached the first reversal point. In the phase of the return, the test probe carrier relative to the vehicle base part has the negative speed of the vehicle base part.

Abstract: The invention relates to a multi-functional calibration system (10) for characterizing luminescence measurement systems, in particular spectrally resolving, wide-field and/or confocal imaging systems, with (a) a baseplate (12), (b) at least one calibration module (24) arranged on the baseplate (12) and including at least one calibration and/or characterization function, and (c) at least one focusing device (20) integrated in the baseplate (12) with a focusing surface (22) for setting a defined measurement beam focus of the luminescence measurement systems to be calibrated, the focusing surface (22) arranged in a common plane with the at least one calibration module (24).

Abstract: The invention relates to a method for the production of a metallic substrate having a biocompatible surface and to the substrate that is produced by means of said method. The method comprises treatment of a metal, i.e., Ti, Ti alloys with Al, V, Ta, Nb, Ni, Fe, Mo or mixtures thereof, Ta, Ta alloys with Fe, Al, Cr, stainless steel, with a melt of calcium nitrate and an additional component which is an oxygen salt of Na, K, Li, Mg and mixtures thereof, said treatment being effected at 180-480 ° C. for 0.1 to 12 hours. A substrate is obtained, wherein the overall layer thickness ranges from 10 to below 1600 nm and the fatigue strength of the substrate is in the same fatigue strength range as that of an untreated substrate at equal number of vibrations N.

Abstract: The present invention relates to a powder mixture for resorbable calcium phosphate biocements, which mixture consists of 40–99% by volume of powder having a particle size of 0.1–10 ?m, 1–20% by volume of powder having a particle size of 10–43 ?m and 0–59% by volume of powder having a particle size of 43–315 ?m, which powder is obtained by grinding the spontaneously crystallizing melts of a material comprising crystalline and X-ray amorphous phases, which material a) according to 31P-NMR measurements, contains Q0-groups of orthophosphate and Q1-groups of diphosphate, the orthophosphates or Q0-groups making up 65 to 99.9% by weight relative to the total phosphorus content of the powder mixture and the diphosphates or Q1-groups making up 0.1 to 35% by weight relative to the total phosphorus content of the powder mixture, and b) according to X-ray diffractometric measurements and relative to the total weight of the powder mixture, contains 35 to 99.

Abstract: The invention relates to a method for the production of an adhesive and an adhesive kit for joining similar or different metal surfaces or ceramics, especially in the field of biomedicine. The objective of the invention is to avoid polymerization-linked by-products and disadvantageous effects, in addition to enabling a temporary biocompatible bond between metal and metal or metal and ceramics. The inventive method consist in using a monomer-free polymethylmethacrylate which is mixed with a suitable, non-toxic solvent and a bioactive vitreous-crystalline material with a particle size ranging from 0.05–20?, consisting of 15–45 wt. % CaO, 40–45 wt. % P2O5, 10–40 wt. % ZrO2 and 0.7–3.5 wt. % fluoride, having apatite and calcium zircon phosphate as main crystal phases and a glass phase as an auxiliary component until a flowable mixture is obtained. The invention also relates to an adhesive kit consisting of said components.

Abstract: The present invention relates to a glass used as a sintering aid for a resorbable molded body containing calcium phosphate as well as to a method for manufacturing said molded body. According to the invention, the material is ?-tricalcium phosphate and the glass has a chemical composition of 68–78% by weight SiO2, 5–12% by weight MgO and 12–27% by weight Na2O. The aforesaid molded body is manufactured by melting said glass, grinding it until a grain size D50 of 0.7–2 ?m is achieved and mixing it with ?-tricalcium phosphate having a grain size D50 of 1–7.5 ?m, giving the mixture the desired shape and producing the molded body by sintering said mixture at between 1,150 and 1,350° C., wherein the grain size of ?-TCP must not be smaller than that of the glass.

Abstract: The invention relates to a resorbable, biocompatible moulded body and a process for its production. The moulded body is mechanically processable and comprises an organic component which is solid at <40° C., which is biocompatible, which forms networks in water, and which is resorbable in the bodies of mammals within 3 to 20 days, and a solid, inorganic chemical component which is distributed within it with a particle size of d50 of 7-800 nm, which is resorbable in the bodies of mammals within 7 to 180 days. This is obtained by converting a sol consisting of Ca compounds with an acidic phosphorous acid ester, contaminating the sol with additional cations by adding 0 to 5 weight % alcoholate or carboxylate of Na, K, Zn, Mg or mixtures of these, mixing the sol with the dissolved organic component, spray-drying the mixture and compressing the granulate obtained into a moulded body.

Abstract: Disclosed are an imaging method and an arrangement for the computer-assisted evaluation of projected object trajectories obtained from a computer-tomographic measurement. According to the inventive method, the trajectories are arranged in a previously known sequence into a projection matrix as traces of the respective voluminous elements, and the following steps are iterated until a sufficient reconstruction quality has been attained; (a) at least one of the traces is selected; (b) a reconstructed element that is true to the original position is formed from each of the selected traces so as to be added to a reconstructed image; (c) the selected traces are removed from the projection matrix.