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: A visualization graph is provided on a computer. Data is stored corresponding to a plurality of entities, 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, a visualization graph representing the results of the query is provided. Entities are selected from the plurality of entities having at least one common relation and storing the selected entities as a plurality of groups.

Abstract: The present invention relates to a process for production of acrylic acid, comprising at least the following steps: a. dehydrating glycerine to a dehydration product comprising acrolein; b. gas phase oxidation of the dehydration product comprising acrolein to obtain a monomer gas comprising an acrylic acid; c. bringing into contact the monomer gas with a quench means to obtain a quench phase comprising acrylic acid; and d. processing the quench phase comprising acrylic acid to obtain a monomer phase comprising acrylic acid. The present invention may also relate to a process for preparation of polymers by radical polymerization of acrylic acid, the water-absorbing polymers obtainable by this process, water-absorbing polymers based to at least 25 wt % upon partially neutralized acrylic acid, a composite, a device for preparation of acrylic acid, a process for preparation of acrylic acid, and the acrylic acid obtainable by this process.

Abstract: The present invention refers to a catalyst for the manufacture of methyl mercaptan from carbon oxides comprising Mo and K compounds and oxides or sulfides of metals chosen from the manganese group. The improvement of the present process consists of the fact that carbon dioxide can be converted with higher conversions and selectivities to methyl mercaptan as compared to state-of-the-art technologies, with only minor amounts of carbon monoxide being formed as side product. Simultaneously, carbon monoxide can be easily converted into carbon dioxide and hydrogen by reaction with water using established water-gas-shift-technologies thus increasing the overall selectivity to methyl mercaptan.

Abstract: The invention relates to a sheet material dispenser with 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 it is provided according to the invention that 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), that the tray (1) consists of a rear wall (4), two side walls (5, 6) and an end wall (7) forming its lower end and that 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), and by means of which the said tray can be divided.

Abstract: The invention relates to a sheet material dispenser with at least two compartments (37) for accommodating sheet material, in particular in the form of brochures. The compartments are formed using staggered module components which are arranged one behind the other. The module components can be joined together through a movement directed initially perpendicular and then parallel to the rear wall (4) of the compartments and can be released again. In order to be able to manufacture the sheet material dispenser with a low expense of material, according to the invention the module components are formed from trays (1), which consist of a rear wall (4), two side walls (5, 6) and an end wall (7) forming their lower end. Furthermore each tray (1) has in the region of the edges of its two side walls (5, 6) facing away from its rear wall (4) in each case at least one protrusion (9) directed towards the tray interior.

Abstract: Database management systems and methods for managing a database are disclosed. In one embodiment, a database management system is provided that comprises a database layer including a database for storing data, and a spreadsheet layer for representing data from the database layer in a spreadsheet in accordance with a view, wherein the view causes at least one of a delivery of data to the spreadsheet layer from the database layer and a maintenance of data from the spreadsheet layer to the database layer.

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: 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: A continuous process for preparing an isoolefin having 4 to 6 carbon atoms is performed by cleaving a compound of the formula I R1—O—R2 ??(I) wherein R1=a tertiary alkyl radical having 4 to 6 carbon atoms, and R2=H or an alkyl radical, in a gas phase over a solid catalyst, in the temperature range of 200 to 400° C., at a pressure of 0.1 to 1.2 MPa, in a reactor which is equipped with a heating jacket and is heated with a liquid heat carrier, wherein the cleavage is carried out in such a way that a temperature drop in the catalyst zone at any point in relation to the entrance temperature is less than 50° C., wherein (i) a reaction mixture in the reactor and (ii) the heat carrier in the jacket flow through the reactor in cocurrent, and wherein a temperature difference of the heat carrier between a feed point to the reactor and an outlet from the reactor is adjusted to less than 40° C.

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: 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: The invention relates to a board that can be used especially as a board for a door in offices or administrative buildings. A base body (1) of said board comprises guiding grooves (2, 3) for an information carrier (4), on two opposing edges thereof, and a cover (5). Clamping slides (15) that can be introduced into a central groove (6) of the base body (1) are used to secure the position of the information carrier (4) and the cover (5), at least one of said slides being provided preferably with at least one display panel (23) that can be pivoted back and forth.

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.

Abstract: A stand for a revolving card index is formed from parts which are fitted together to enable the economic manufacture of the stand.