Abstract: A hot-formed, chemically prestressable glass article having a low percentage of crystals or crystallites, in particular a plate-shaped, chemically prestressable glass article, as well as to a method and a device for its production are provided. The glass article has a composition including the components SiO2, Al2O3, and Li2O and a content of seed formers (ZrO2, SnO2, and TiO2) of at least 0.8 wt %, as well as at most ten crystals, including crystallites, per kilogram of glass, which have a maximum diameter greater than 1 ?m and up to at most 5 ?m.

Abstract: A fluid line system including at least one liquid supply line, at least one gas supply line and at least two elongated fluid conduits is provided. Of the at least two elongated fluid conduits, at least one fluid conduit is an outer fluid conduit which completely encloses another fluid conduit which is inner fluid conduit. The liquid supply line is connected to the outer fluid conduit so that a liquid fluid can flow between the inner and outer fluid conduits. The gas supply line is connected to the inner fluid conduit so that a gaseous fluid can flow in the inner fluid conduit. A method for injecting a fluid mixture through a nozzle supplied by the fluid system is also.

Abstract: The nozzle for injecting a reagent into a combustor has a body with a cavity, an occlusion for the cavity, a slit for injecting the reagent, at least one intermediate disc between the body and the occlusion, the at least one intermediate disc having at least one opening for the passage of the reagent, wherein the nozzle further has a first slit between the body and the at least one intermediate disc, a second slit between the occlusion and the at least one intermediate disc (56), and/or at least one slit having at least one corrugated border defining a variable size slit between a minimum size and a maximum size.

Abstract: A polyurethane foam for thermal insulation at extremely low temperatures. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: A DNA composition effective for eliciting an immune response against tumor cells and tumor metastases comprising a DNA construct that encodes for at least one epitope of fibroblast activation protein (FAP), which is expressible in immune cells, and which is incorporated in a pharmaceutically acceptable carrier. The composition can encode a single epitope of FAP, a polypeptide comprising two or more epitopes of FAP, the entire FAP protein, or any portion thereof that will elicit the desired immune response. In one preferred embodiment, the composition also includes a DNA construct that encodes an immune effector protein, such as a cytokine. The DNA composition of the invention can be used alone or in combination with a chemotherapeutic agent to treat diseases such as tumors and tumor metastases.

Abstract: The present invention is directed to a housing flange unit which includes a housing flange wherein a butterfly valve shaft is rotatably mounted in a perpendicular position in relation to the longitudinal axis of the housing flange and includes a butterfly valve which is arranged in the middle and provided with a first bearing and a second bearing. The butterfly valve shaft includes a circular disk on the outside of the first bearing. The disk engages with a cup-shaped seat of the housing flange. A pot-shaped element with a circular recess is fixed in the cup-shaped seat. The circular disk is embedded in the pot-shaped element. The invention also relates to the use of the housing flange unit as a sealing unit.

Abstract: A process for concentrating polymers by evaporation is disclosed. The process entails (i) obtaining a mixture containing a polymer and volatile component, the volatile components being present in the mixture at an amount less than 20 wt. % relative to the weight of the mixture, and (ii) introducing the mixture in a downward direction under pressure through a plurality of nozzles arranged vertically and next to one another into a degassing container to form an extrudate. The volatile component contains at least one of residual monomers, oligomers and solvents, and the throughput of the mixture per nozzle is 0.3 to 2 kg/h. The vapor pressure of the volatile component of the extrudate is more than 2.5 bar, and the absolute pressure in the degassing container is 50 to 5000 Pa. The polymer prepared by the process is characterized in that it contains volatile components in an amount of less than 300 ppm.

Abstract: A process for concentrating polymers by evaporation is disclosed. The process entails (i) obtaining a mixture containing a polymer and volatile component, the volatile components being present in the mixture at an amount less than 20 wt. % relative to the weight of the mixture, and (ii) introducing the mixture in a downward direction under pressure through a plurality of nozzles arranged vertically and next to one another into a degassing container to form an extrudate. The volatile component contains at least one of residual monomers, oligomers and solvents, and the throughput of the mixture per nozzle is 0.3 to 2 kg/h. The vapor pressure of the volatile component of the extrudate is more than 2.5 bar, and the absolute pressure in the degassing container is 50 to 5000 Pa. The polymer prepared by the process is characterized in that it contains volatile components in an amount of less than 300 ppm.

Abstract: A process for incinerating solids, especially for burning rubbish in a combustion vessel comprising at least one combustion chamber and an after-burner chamber. Here, instead of secondary or tertiary air, water vapor under increased pressure is sprayed into the combustion vessel after the combustion gases have left the combustion chamber. Only primary air is supplied as the combustion air. In this manner and with the use of minimum quantities of combustion air, it is possible to increase the effectiveness of the overall process while at the same time reducing the emission of pollutants. It is also possible to feed back flue gas together with the water vapor, so that, for example, the maximum temperatures, the temperature reduction and the dwell times in the 1st and 2nd flue of the vessel can be easily set to the optima.

Abstract: A process for extracting hydrogen fluoride from fluorine containing materials includes countercurrently contacting the materials with steam having a plane of rotation relatively perpendicular to the direction of flow of the material. An apparatus for the extraction of hydrogen fluoride from fluorine containing materials includes a rotary kiln having a first zone wherein a steam-air mixture countercurrently contacts the materials in an oxidation step, a second zone wherein an oxygen containing gas is tangentially injected into the kiln to provide complete combustion of carbon containing materials, a third zone wherein a steam stream countercurrently contacts the materials in a reducing step and means for providing a plane of rotation to the steam which is relatively perpendicular to the direction of flow of the material.

Abstract: Wall structure for a smelting stack is comprised of a cooling fluid flow pipe membrane layer comprised of a series of vertical, parallel arranged pipes extending between upper and lower manifold members. The pipe membrane completely surrounds a hot zone in the smelting stack. The upper and lower manifolds extend interiorly of the pipe wall membrane to define an alcove in which there is positioned a series of vertically arranged lengths of insulation cladding which are spaced from one another by gaps filled with fire-proof materials. The gaps contain elements of the pipe membrane layer directed interiorly of the pipe membrane. A waste-gas stack may be mounted directly adjacent the smelting stack with a common wall therebetween. The waste-gas stack wall comprises only a pipe membrane.

Abstract: A process for extracting hydrogen fluoride from fluorine containing materials includes countercurrently contacting the materials with steam having a plane of rotation relatively perpendicular to the direction of flow of the material. An apparatus for the extraction of hydrogen fluoride from fluorine containing materials includes a rotary kiln having a first zone wherein a steam-air mixture countercurrently contacts the materials in an oxidation step, a second zone wherein an oxygen containing gas is tangentially injected into the kiln to provide complete combustion of carbon containing materials, a third zone wherein a steam stream countercurrently contacts the materials in a reducing step and means for providing a plane of rotation to the steam which is relatively perpendicular to the direction of flow of the material.