Abstract: A catalyst, useful in the preparation of isoolefins and containing 0.1 to 20% by mass of an alkali metal oxide, an alkaline earth metal oxide and mixtures thereof; 0.1 to 99% by mass of aluminum oxide; and 0.1 to 99% by mass of silicon dioxide, is prepared by a) treating an aluminosilicate with an aqueous alkali metal salt solution, an alkaline earth metal salt solution and mixtures thereof, under acidic conditions, to obtain a treated aluminosilicate; and b) calcining the treated aluminosilicate, to obtain the catalyst.

Abstract: The present invention relates to a process for preparing unsaturated aldehydes or unsaturated carboxylic acids by heterogeneous catalytic gas phase oxidation of unsaturated or saturated hydrocarbons, comprising the process steps of: i) providing a gas mixture comprising a saturated hydrocarbon and catalytically dehydrogenating the saturated hydrocarbon in the gas phase to obtain a gas mixture comprising an unsaturated hydrocarbon in a dehydrogenation reactor having a dehydrogenation catalyst material; or ii) providing a gas mixture comprising oxygen and an unsaturated hydrocarbon; iii) catalytically oxidizing the unsaturated hydrocarbon obtained in process step i) or provided in process step ii) in the gas phase to obtain a gas mixture comprising an unsaturated aldehyde in a first oxidation reactor having a first oxidation catalyst material; wherein at least one of the reactors selected from the dehydrogenation reactor, the first oxidation reactor and the second oxidation reactor comprises at least one foam b

Abstract: A process for the dissociation of methyl tert-butyl ether (MTBE), which includes at least a) catalytic dissociation of MTBE which is present in two streams I and VII over a catalyst to give a dissociation product II, b) separation by distillation of the dissociation product II obtained in a) into an overhead stream III containing more than 90% by mass and a bottom stream IV containing diisobutene, MTBE and more than 80% of the methanol present in the dissociation product II, c) separation by distillation of the bottom stream IV obtained in b) into a methanol-containing bottom stream V, a side stream VI containing diisobutene, methanol and MTBE and an overhead stream VII containing MTBE and methanol and d) recirculation of the overhead stream VII to a).

Abstract: The invention relates to a key carrier comprising a base body (1) and a window, wherein one respective end of the base body (1) and window (6) is provided with a fork-shaped termination. A key ring (21) can be introduced into a gap (18) defined by the prongs (10,11) of the fork-shaped end of the window (6). When inserted, said key ring is secured by means of a retaining bolt (14). The prongs (10,11) of the window can be clipped in between the prongs (2,3) of the base body. When clipped in, the window is retained by pivoting journals (16,17) which engage with the opposite ends of the window bores (12,13) receiving the retaining bolts (14).

Abstract: The present invention relates to a holder clip (1) for cards, such as identification cards, comprising two holding arms (3, 4) interconnected by a yoke (2) and defining between them a card reception slot (5). In order to be able to hold also cards of various thicknesses with adequate holding force by means of the holder clip (1), the present invention is so conceived that at least one of the two holding arms (3, 4) is provided with at least one contact-pressure pad (6) bulging, at least in certain sections thereof, towards the respective other holding arm (3, 4), said contact-pressure pad (6) consisting of a material that is different from the material of the holding arms (3, 4).

Abstract: A catalyst, useful in the preparation of isoolefins and containing 0.1 to 20% by mass of an alkali metal oxide, an alkaline earth metal oxide and mixtures thereof; 0.1 to 99% by mass of aluminum oxide; and 0.1 to 99% by mass of silicon dioxide, is prepared by a) treating an aluminosilicate with an aqueous alkali metal salt solution, an alkaline earth metal salt solution and mixtures thereof, under acidic conditions, to obtain a treated aluminosilicate; and b) calcining the treated aluminosilicate, to obtain the catalyst.

Abstract: A database management system and a method of managing a database storing a plurality of entities related to each other by a plurality of relations. The database management system includes a user interface for interfacing with the database in a current situation. The system also includes a context modeler for modeling a context representation and a server for storing a situation in which the user has been involved as at least one frame. The at least one frame describes at least one object and action involved in the situation in which the user has been involved and their relationship to each other. A context using the at least one frame is modeled by the context modeler so that when the context representation is applied to the database, operation of the database is adapted according to the situation.

Abstract: Isobutene is prepared by dissociation of MTBE in the gas phase, by a) fractional distillation of an MTBE-containing stream comprising feed MTBE (I) and a recycle stream (VIII) to give an MTBE-containing overhead stream (II) and a bottom stream (III) having a boiling point higher than MTBE, b) catalytic dissociation of the overhead stream (II) obtained in step a) to give a dissociation product (IV), c) separation by distillation of the dissociation product (IV) obtained in step b) into an overhead stream (V) comprising more than 90% by mass of isobutene and a bottom stream (VI) comprising diisobutene, MTBE and more than 50% of the methanol present in the dissociation product (IV), d) fractional distillation of the bottom stream obtained in step c) under conditions under which the methanol is obtained as bottom product (VII) and more than 99% of the MTBE is obtained in the overhead product (VIII), and e) recirculation of the overhead product (VIII) to step a).

Abstract: A sheet material dispenser has at least two compartments (37) for accommodating sheet material, which are formed by module components which can be joined together and released again. In order to provide a sheet material dispenser which has at least one divisible module part for accepting sheet material, the module components include at least one tray (1) for accommodating the sheet material, at least one front plate (34) and at least one partition wall (2), the tray (1) consists of a rear wall (4), two side walls (5, 6) and an end wall (7) forming its lower end, and the tray (1) is provided with longitudinal slots (8) in the region of its rear wall (4) for the attachment of the partition wall (2), which has hooks (27) that can be inserted into the longitudinal slots (8), for dividing the tray.

Abstract: Isobutene is prepared by a process in which a) an MTBE-containing stream I is separated by distillation into an MTBE-containing overhead stream II and a bottom stream III which comprises compounds having boiling points higher than that of MTBE; and b) the MTBE present in the overhead stream II is dissociated over a catalyst to give a dissociation product IV; wherein the stream I has a proportion of 2-methoxybutane (MSBE) of greater than 1000 ppm by mass, based on MTBE, and wherein the separation by distillation in step a) and/or the dissociation in step b) is carried out so that the dissociation product IV has a concentration of less than 1000 ppm by mass of linear butenes, based on a C4-olefin fraction.

Abstract: In some implementations, a method includes receiving a first data set that is stored using a first format, generating an info item based on the first data set, the info item representing an entity extracted from the first, data set, generating a delta item based on the first data set, the delta item including a reference to the into item and defining a context-based modification of the info item, generating a second data set in a second format comprising the into item and the delta item, and storing the second data set to the computer-readable storage medium.

Abstract: A context modeler models a context representation and a method models a context representation. The context modeler models a context representation in an application. The context is represented in a current situation by at least one context entity that is included in at least one collection of references to a plurality of entities in a database in accordance with the situation. The context modeler includes an activation model for assigning an activation attribute to the at least one context entity indicating the importance of the at least one context entity in the current situation. The context modeler takes into account the activation attribute in modeling the context representation.

Abstract: The aim of the invention is to provide boxes for keys that can be produced at low costs, especially when they form an integral part of a series of boxes of different capacities. For this purpose, the housing of such a box is configured with side walls (7, 8) screwed together with an upper part (1) and a lower part (2) and a back wall (22 22) guided in a guide groove (18, 19) of the side walls (7, 8). The side walls (7, 8) and the door (13) of the housing are preferably constituted of continuous profiled elements cut to shape and the back wall (22, 22) as well as the upper and lower parts (1, 2) consist of diecast elements. The back wall is provided with perforations (24) for hanging at least one key rail (25).

Abstract: Formulation comprising hydrophobicized particles of silicon dioxide, mineral oil and one or more emulsifiers, where the hydrophobicized silicon dioxide is a fumed silicon dioxide, possesses a BET surface area of 200 to 300 m2/g, has on the surface of the particles O—Si—(CnH2n+1)3 groups, where n is 1 to 3 and where the (CnH2n+1) units are alike or different, has a carbon content of 1.5% to 5% by weight, based on the hydrophobic silicon dioxide, and is present in the formulation with a fraction of 0.05% to 5% by weight.

Abstract: A visualization graph is provided on a computer. Data corresponding to a plurality of entities is stored, wherein a semantic net includes the entities and wherein the entities are linked to each other by a plurality of relations. In response to a query with respect to an entity selected from the plurality of entities, providing a visualization graph representing the results of the query, representing a plurality of entities having a common relation as a first node on the visualization graph. In response to a predetermined stimulus causing the entities comprised at the first node to be displayed, and in response to a further predetermined stimulus causing the graph to restructure so that the node replaces the displayed entities.

Abstract: The invention relates to a clip file, comprising a clip body with a front and a rear clip jaw (5) made from sheet steel, wherein both clip jaws (5) are connected by means of a yoke and the rear clip jaw rests against a rear wall of a rear cover of the file, whilst the front clip jaw (5) presses against a section of a multiply folded strip (2), provided with a window (4), formed from the longitudinal edge of the rear cover folded towards the front of the file and the strip (2) forms a stop which cooperates with a counter stop formed from an edge of the front clip jaw (5) folded inwards. According to the invention, the clip body may be provided with a defined grip point by means of a projection embossed in the centre of at least the front clip jaw, the apex of which faces the yoke of the clip body.

Abstract: A system and method to efficiently perform database cleanup. Database objects are initially grouped based on selected attributes. The groups may be filtered to identify erroneous data within the group. Structure query language statements are then dynamically generated to directly correct the erroneous data within the database.

Abstract: Methods and apparatuses enable evolution of components used in developing modeled applications and processes. A framework allows for observing and storing information regarding the relatedness of a component to another component. The framework can provide context changes and component modifications based at least in part on the observed relatedness information for use in development and/or execution of developed applications and processes.