Abstract: In a direct drill bit drive for tools for comminuting brittle materials and penetrating into brittle materials by percussive impact on the basis of a heat engine operated with a gaseous working medium, the heat engine is a hot gas engine operating in accordance with a real Stirling cycle process.

Abstract: In a direct drill bit drive for tools for comminuting brittle materials and penetrating into brittle materials by percussive impact on the basis of a heat engine operated with a gaseous working medium, the heat engine is a hot gas engine operating in accordance with a real Stirling cycle process.

Abstract: A guide roller for wires, comprising a coating support (1) in the form of a hollow cylinder which is slidable parallel to the longitudinal direction, on which a coating (4) is fixed permanently by adhesion, and having guide grooves for the wires, and which is supported on a hub part by a stabilising support (2) made from CFP or metal, wherein the coating support (1) is made of CFP and is secured on the stabilising support (2) only by a cylindrical or conical press-fitting, avoiding the use of a screw connection

Abstract: The present invention relates to unsymmetrical and symmetrical phosphorus-comprising heptazine derivatives, represented by the formula (1): in which Ra, Rb and Rc are, independently of one another, an azide group —N3 or an —N?PR1R2R3 group, with the proviso that at least one radical from Ra, Rb and Rc is an —N?PR1R2R3 group, to a process for the preparation thereof and to the use thereof.

Abstract: A computer-implemented method of providing access to information stored in diverse formats comprises receiving from an application a semantic request having a request name that semantically identifies a type of information sought by the request, converting the received semantic request to a generic request having corresponding request parameters, transmitting the converted request to a data access system, receiving data from the data access system corresponding to the converted request, and providing the data to the application.

Abstract: The present invention relates to unsymmetrical and symmetrical phosphorus-comprising heptazine derivatives, represented by the formula (1): in which Ra, Rb and Rc are, independently of one another, an azide group —N3 or an —N?PR1R2R3 group, with the proviso that at least one radical from Ra, Rb and Rc is an —N?PR1R2R3 group, to a process for the preparation thereof and to the use thereof.

Abstract: A collaborative system includes information about an organization. The organization can be a group of users or a collection of groups. Each user in the organization has access to at least one workspace, a graphical portal to the organization's information. Each workspace displays at least a subset of the information. A relation is defined for selected pairs of workspaces based on workspace type, user access controls, personal preferences, or any number of other factors. The relation enables navigation from one workspace to another workspace in the pair, automatic document transfer from one workspace to another, analysis and reporting on the organization, and other collaborative functions.

Abstract: Described herein are methods and apparatus, including computer program products, that implement a collaboration workspace for reusable components. One method includes receiving a specification of a workspace component, where the workspace component is capable of being used with different collaboration workspaces; providing the specification of the workspace component to a collaboration workspace with a set of parameters related to the workspace component; and presenting the workspace component as part of the collaboration workspace. The workspace component may be added to a collaboration workspace that has been formed. The set of parameters may include a first set of access restrictions associated with the collaboration workspace, a second set of access restrictions associated with the workspace component, and access restriction mappings. In that case, the method includes associating the first set with the second set of access restrictions based on the access restriction mappings.

Abstract: A compound having a space spinel structure and the formula Si3-x Cx N4 wherein 0<x?1. An example of the compound is spin el silicon carbonitride. The compound of the invention may be made by providing a silicon carbo-diimide compound and subjecting the compound to elevated temperature and pressure conditions.

Abstract: A computer-implemented method of providing access to information stored in diverse formats comprises receiving from an application a semantic request having a request name that semantically identifies a type of information sought by the request, converting the received semantic request to a generic request having corresponding request parameters, transmitting the converted request to a data access system, receiving data from the data access system corresponding to the converted request, and providing the data to the application.