摘要:
Among other disclosed subject matter, a computer program product is tangibly embodied in a computer-readable storage medium and includes instructions that when executed by a processor perform a method for recording information about an item. The method includes assigning a unique identifier to an item in a repository, the item supporting versioning and being subject to a data model having no predefined schema for items. The method includes associating a first attribute with the unique identifier, the first attribute being part of the item and being configured for modification. The method includes associating the first attribute with a version number, wherein the versioning is supported without recording in the repository a time period when the first attribute is valid.
摘要:
Techniques are described for providing visual bundlers that group and represent specified data subsets of very large datasets in a manner that is expressive and intuitive for a user, and which provide a dynamic, configurable visualization that may be leveraged by the user to search, aggregate, or otherwise interact with the data of a very large dataset. By nesting such visual bundlers, a geometric equivalent of a dynamically-generated search tree is realized, in which a structure for executing a search for a desired data element is not required to be fixed or otherwise predefined. Consequently, during a runtime of providing related visualizations, multiple alternative search trees may be created for the same underlying content, with minimal effort, and in a manner that is highly intuitive and useful for the user.
摘要:
The present invention relates to mixed oxide compositions, to the use thereof as a catalyst for cleavage of alkyl tert-alkyl ethers or tertiary alcohols, and to a process for cleaving alkyl tert-alkyl ethers or tertiary alcohols to isoolefins and alcohol or water.
摘要:
In an embodiment, a method is provided for organizing semi-structured data having properties. In this method, the semi-structured data are accessed and rendered on a graphical user interface. A user input defining a first graphical layout of a first subset of the semi-structured data is received. A second subset of the semi-structured data is identified as having properties similar to the properties of the first subset of the semi-structured data. A second graphical layout of the second subset of the semi-structured data is then provided. The second graphical layout matches the first graphical layout.
摘要:
A system stores visual content, and displays the visual content on a display unit in an undistorted, overview projection. The system receives input from a user to focus on a topic in the undistorted, overview projection, and transforms the undistorted, overview projection into a focused display showing the topic selected by the user and content related to the topic selected by the user in a continuous sequence of increasingly distorted projections. In the focused display, the content that is not related to the topic selected by the user does not move on the focused display, and the content that is related to the topic selected by the user moves towards the topic selected by the user on the focused display.
摘要:
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 body.
摘要:
Various embodiments included herein include at least one of systems, methods, and software for explanatory animation generation. Some embodiments include receiving data representative of at least two data items, each data item to be presented as a node. Relationships between these data items are discovered in an interrelated dataset and the relationship is illustrated as a set of sequential nodes on a canvas. A text-script descriptive of each of the nodes is then generated. Finally, such embodiments include generating a visualization with a synchronized voiceover based on the sequence nodes and the text-script, the visualization including each node with a synchronized voiceover of each node.
摘要:
Silicon-aluminum mixed oxide powder having a weight ratio of (Al2O3/SiO2)ttl in the total primary particle of from 0.003 to 0.05, a weight ratio (Al2O3/SiO2)surface of the primary particles in a surface layer having a thickness of about 5 nm which is less than in the total primary particle and a BET surface area of from 50 to 250 m2/g.It is prepared by igniting one or more silicon compounds selected from the group consisting of CH3SiCl3, (CH3)2SiCl2, (CH3)3SiCl and (n-C3H7)SiCl3, a hydrolysable and oxidizable aluminum compound, at least one fuel gas and air and burning the flame into a reaction chamber, subsequently separating the solid from gaseous materials and subsequently treating the solid with water vapor.The silicon-aluminum mixed oxide powder can be used as catalyst.
摘要:
The problem addressed by the present invention is that of specifying a process for producing aldehydes which, compared with conventional hydroformylation, cuts CO2, which utilises alternative sources of raw materials, and which has no need for a step of providing carbon monoxide.This problem is solved by processes comprising the following steps: a) providing at least one alkane; b) photocatalytically dehydrogenating the alkane to a mixture comprising at least one olefin and hydrogen; c) adding carbon dioxide and hydrogen to the mixture; d) hydroformylating the olefin to at least one aldehyde. More particularly, n-butane is initially dehydrogenated photocatalytically and the resulting 1-butene is reacted with CO2 in a hydroformylation to form valeraldehyde.The overall process exemplified for n-butane and CO2 is as follows: n-butane→1-butene+H2(photocatalytic dehydrogenation) 1-butene+CO2+2H2→valeraldehyde+H2O(hydroformylation with CO2)
摘要翻译:本发明解决的问题在于指定生产醛的方法,其与常规加氢甲酰化相比,切割利用替代原料源的CO 2,并且不需要提供一氧化碳的步骤。 该问题由包括以下步骤的方法解决:a)提供至少一种烷烃; b)将烷烃光催化脱氢成包含至少一种烯烃和氢的混合物; c)向混合物中加入二氧化碳和氢气; d)将烯烃加氢甲酰化至至少一种醛。 更具体地,正丁烷最初被光催化脱氢,所得1-丁烯在加氢甲酰化反应中与CO 2反应生成戊醛。 正丁烷和二氧化碳示例的总体方法如下:正丁烷 - > 1-丁烯+ H 2(光催化脱氢)1-丁烯+ CO 2 + 2H 2 - >戊醛+ H 2 O(用CO 2加氢甲酰化)
摘要:
Improved multi-input gesture control for a display screen is enabled by using a first screen input to determine control operations that result from a second screen input that is followed by a gesture. A gesture that corresponds to a path traced on a display screen may define a new screen input or manipulate existing screen objects depending on some specific feature of the path or the entirety of the path.